CN111864287B - Lithium battery activation charging method and device and lithium battery activation charger - Google Patents
Lithium battery activation charging method and device and lithium battery activation charger Download PDFInfo
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- CN111864287B CN111864287B CN202010622186.XA CN202010622186A CN111864287B CN 111864287 B CN111864287 B CN 111864287B CN 202010622186 A CN202010622186 A CN 202010622186A CN 111864287 B CN111864287 B CN 111864287B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/446—Initial charging measures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0069—Charging or discharging for charge maintenance, battery initiation or rejuvenation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The disclosure relates to a lithium battery activation charging method, a lithium battery activation charging device, a lithium battery activation charger, an electronic device and a non-transitory computer readable storage medium, wherein the lithium battery activation charging method comprises the following steps: connecting a lithium battery; supplying power to the lithium battery through the power supply voltage; when the power supply time reaches a first time threshold value, detecting whether the power supply current is greater than or equal to the first current threshold value; if the power supply current is greater than or equal to the first current threshold value, continuing to supply power to the lithium battery; and if the power supply current is smaller than the first current threshold value, stopping supplying power to the lithium battery. The lithium battery is powered and activated by the power supply voltage, so that the safety of the battery is guaranteed, the battery can be detected in the activation process, whether the battery is damaged or not or cannot be successfully activated due to other reasons is judged, the activation state can be kept, or the battery is stopped to be activated in time, replaced and maintained, and the activation is convenient and safe, and the cost is saved.
Description
Technical Field
The present disclosure relates to the field of lithium battery charging, and in particular, to an active charging method for a lithium battery, an active charging device for a lithium battery, an active charger for a lithium battery, an electronic device, and a non-transitory computer-readable storage medium.
Background
The lithium battery pack is used as a power supply module and applied to various products, such as mobile phones and notebook computer mobile equipment, or portable carriers such as electric balance cars and electric scooters.
When the electric quantity of the lithium battery is too low, if the lithium battery is not charged and is continuously used until the lithium battery is automatically shut down, or is not charged for a long time, the battery protection board MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor) of the lithium battery is in a cut-off state, so that the charging action cannot be completed or the battery cannot be activated and continuously used, and only the battery can be disassembled to directly perform the battery replacement operation. Some complex products need to be overhauled by an engineer, the battery is replaced, the maintenance cost is high, the battery replacement cost is possibly close to 50% of the product price, the user maintenance cost is high, the replaced battery can only be returned to a factory for processing, the repair period is long, and the user experience is poor.
However, if the lithium battery cannot be charged, the lithium battery may not be charged due to the above-described reasons, but may be damaged.
In the case of a lithium battery that cannot be charged, it is impossible to determine what causes it, and it is costly to directly replace the battery, and continuous attempted activation may not be successful.
Disclosure of Invention
To overcome the problems in the related art, the present disclosure provides a lithium battery activation charging method, a lithium battery activation charging apparatus, a lithium battery activation charger, an electronic apparatus, and a non-transitory computer-readable storage medium.
According to a first aspect of the embodiments of the present disclosure, there is provided a battery activation charging method, including connecting a lithium battery; supplying power to the lithium battery through a supply voltage; when the power supply time reaches a first time threshold value, detecting whether the power supply current is greater than or equal to the first current threshold value; if the power supply current is larger than or equal to the first current threshold value, continuing to supply power to the lithium battery; and if the power supply current is smaller than the first current threshold value, stopping supplying power to the lithium battery.
In an embodiment, the method further comprises: and if the power supply current is smaller than the first current threshold value, sending a first signal.
In an embodiment, the method further comprises: judging whether the lithium battery is activated or not; if the activation is completed, sending a second signal and/or stopping supplying power to the lithium battery through the power supply voltage; and if the activation is not finished, continuously supplying power to the lithium battery.
In one embodiment, whether the lithium battery is activated is judged by the following method: if the voltage of the lithium battery is greater than or equal to the discharge cut-off voltage, or if the power supply time reaches a second time threshold, judging that the lithium battery is activated; and if the voltage of the lithium battery is smaller than the discharge cut-off voltage, or if the power supply time does not reach a second time threshold, judging that the lithium battery is not activated.
In an embodiment, the method further comprises: and if the activation is finished, supplying power to the lithium battery through a charging voltage, wherein the charging voltage is greater than or equal to the power supply voltage.
In an embodiment, the method further comprises: detecting whether the voltage of the lithium battery is greater than or equal to a charge cut-off voltage; if the voltage of the lithium battery is greater than or equal to the cut-off voltage of charging, sending a third signal and/or stopping supplying power to the lithium battery; and if the voltage of the lithium battery is less than the charge cut-off voltage, continuously supplying power to the lithium battery.
In one embodiment, the supplying power to the lithium battery by the supply voltage and the supply current includes: and supplying power to the lithium battery by using a constant power supply voltage, wherein the power supply voltage is less than or equal to the rated charging voltage of the lithium battery.
In one embodiment, the lithium battery is connected by: and directly connecting the positive electrode and the negative electrode of the electric core of the lithium battery through an interface adaptive to the lithium battery.
In one embodiment, before the connecting the lithium battery, the method further comprises: and detecting whether the lithium battery is short-circuited or not, and if the lithium battery is not short-circuited, executing the connection of the lithium battery.
In an embodiment, the method further comprises: detecting whether the supply current is greater than or equal to a second current threshold; if the power supply current is larger than a second current threshold, after the power supply is suspended for a preset time, the lithium battery is supplied with power again, and whether the power supply current is larger than or equal to the second current threshold is detected; and if the power supply current is less than or equal to a second current threshold value, continuing to supply power to the lithium battery.
In an embodiment, the method further comprises: detecting whether a supply voltage for supplying power to the lithium battery is greater than or equal to a voltage threshold; if the power supply voltage is greater than the voltage threshold, stopping supplying power to the lithium battery, or reducing the power supply voltage to enable the power supply voltage to be less than or equal to the voltage threshold; and if the power supply voltage is less than or equal to the voltage threshold, continuing to supply power to the lithium battery.
According to a second aspect of the embodiments of the present disclosure, there is provided a lithium battery activation charging device, including a connection module, configured to connect a lithium battery; the power supply module is used for supplying power to the lithium battery through power supply voltage; the timing module is used for determining the power supply time; the detection module is used for detecting whether the power supply current is greater than or equal to a first current threshold value or not when the power supply time reaches the first time threshold value; the power supply module is further used for continuously supplying power to the lithium battery when the power supply current is larger than or equal to a first current threshold value; and when the power supply current is smaller than the first current threshold value, stopping supplying power to the lithium battery.
In one embodiment, the apparatus further comprises: a prompt module; the prompting module is used for sending a first signal when the power supply current is smaller than the first current threshold value.
In one embodiment, the apparatus further comprises: a prompt module; the prompting module is further used for sending a second signal when the lithium battery is activated; the power supply module is further used for stopping supplying power to the lithium battery when the lithium battery is activated.
In an embodiment, the detection module is further configured to detect a voltage of the lithium battery; the prompting module is further used for sending the second signal when the voltage of the lithium battery is greater than or equal to the discharge cut-off voltage or the power supply time reaches a second time threshold; the power supply module is further used for stopping supplying power to the lithium battery when the voltage of the lithium battery is greater than or equal to the discharge cutoff voltage or when the power supply time reaches a second time threshold.
In an embodiment, the power supply module is further configured to supply power to the lithium battery through a charging voltage when the lithium battery is activated, where the charging voltage is greater than or equal to the power supply voltage.
In an embodiment, the prompting module is further configured to send a third signal when the voltage of the lithium battery is greater than or equal to a charge cut-off voltage; the power supply module is also used for stopping supplying power to the lithium battery when the voltage of the lithium battery is greater than or equal to the charge cut-off voltage.
In an embodiment, the power supply module is further configured to supply power to the lithium battery with a constant power supply voltage, where the power supply voltage is less than or equal to a rated charging voltage of the lithium battery.
In an embodiment, the connection module directly connects the positive electrode and the negative electrode of the electric core of the lithium battery through an interface adapted to the lithium battery.
In one embodiment, the apparatus further comprises: the short circuit detection module is used for detecting whether the lithium battery is short-circuited or not; the connection module is used for connecting the lithium battery when the lithium battery has no short circuit.
In an embodiment, the detecting module is further configured to detect the supply current; the power supply module is further used for suspending power supply to the lithium battery when the power supply current is larger than a second current threshold value, and supplying power to the lithium battery again after preset time; and when the power supply current is less than or equal to a second current threshold value, continuing to supply power to the lithium battery.
In an embodiment, the detection module is further configured to detect a supply voltage for supplying power to the lithium battery; the power supply module is further used for stopping supplying power to the lithium battery or reducing the power supply voltage to enable the power supply voltage to be smaller than or equal to the voltage threshold when the power supply voltage is larger than the voltage threshold; and when the power supply voltage is less than or equal to the voltage threshold value, continuing to supply power to the lithium battery.
According to a third aspect of the embodiments of the present disclosure, there is provided a lithium battery activation charger including: an adapter; one end of the connecting wire is connected with the adapter, and the other end of the connecting wire is provided with a battery interface for connecting a lithium battery; the lithium battery activation charger is used for supplying power to the lithium battery through the lithium battery activation charging method according to the first aspect.
In an embodiment, the battery interface is provided with a fool-proof member matched with the positive electrode interface and the negative electrode interface of the battery core of the lithium battery.
According to a fourth aspect of the embodiments of the present disclosure, there is provided an electronic apparatus including: a processor; a memory for storing processor-executable instructions, wherein the processor is configured to: the method of lithium battery active charging as described in the foregoing first aspect is performed.
According to a fifth aspect of embodiments of the present disclosure, there is provided a non-transitory computer readable storage medium, wherein instructions of the storage medium, when executed by a mobile processor, implement the lithium battery active charging method according to the first aspect.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the lithium battery is powered and activated by the supply voltage, so that the safety of the battery is ensured, the battery can be detected in the activation process, whether the battery is damaged or not or cannot be successfully activated due to other reasons is judged, the activation state can be kept, or the battery is stopped to be activated in time, replaced and maintained, so that the activation is convenient and safe, and the cost is saved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic perspective view of a lithium battery activation charger according to an exemplary embodiment.
Fig. 2 is a schematic diagram illustrating a front side configuration of a lithium battery activation charger, according to an exemplary embodiment.
Fig. 3 is a schematic diagram illustrating a back side structure of a lithium battery activation charger according to an exemplary embodiment.
Fig. 4 is a perspective view of an adapter sub shown in accordance with an exemplary embodiment.
Fig. 5a, 5b, 5c are three-sided schematic views of an adapter connector according to an exemplary embodiment.
Fig. 6a, 6b illustrate a battery interface according to an exemplary embodiment.
Fig. 7a, 7b illustrate a battery interface according to another exemplary embodiment.
Fig. 8a, 8b illustrate a battery interface according to another exemplary embodiment.
Fig. 9 is a flow chart illustrating a method of active charging of a lithium battery according to an exemplary embodiment.
Fig. 10 is a flow chart illustrating another method of active charging of a lithium battery according to an example embodiment.
Fig. 11 is a flow chart illustrating another method of active charging of a lithium battery according to an example embodiment.
Fig. 12 is a block diagram illustrating a lithium battery activated charging device in accordance with an exemplary embodiment.
Fig. 13 is a block diagram illustrating another lithium battery activated charging device in accordance with an exemplary embodiment.
FIG. 14 is a block diagram illustrating an apparatus in accordance with an example embodiment.
FIG. 15 is a block diagram illustrating an apparatus in accordance with an example embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure.
In some related arts, in a state where a lithium battery cannot be charged, a high voltage and a high current are directly applied to the lithium battery to activate the lithium battery. The mode easily causes damage to the battery and has potential safety hazard.
In other related technologies, when the lithium battery is damaged and cannot be charged, the power supply is turned on, which may cause further damage to the battery, even explosion and other hazards.
To solve the existing problems, the present disclosure provides a lithium battery activation charger 100, as shown in fig. 1, 2 and 3, the lithium battery activation charger 100 includes a housing 110, an adapter (not shown), and a connection line 120. The adapter is arranged inside the shell 110, is connected with the lithium battery through the connecting line 120, and can supply power to the lithium battery to realize the functions of activation, charging, detection and the like. One end of the connection line 120 is connected to the adapter through the adapter interface 130, and the other end is provided with a battery interface for connecting a lithium battery.
The adapter can provide stable constant current and constant voltage, and activation reliability and safety are guaranteed. Specifically, the output voltage of the adapter may be set according to the rated charging voltage of the lithium battery, or an adapter capable of providing a voltage that meets the output voltage requirement may be selected. The output voltage of the adapter for activation may be the same as the rated charging voltage of the lithium battery, or in order to further ensure the safety of the activated lithium battery and avoid damage to the lithium battery, the output voltage may be slightly lower than the rated charging voltage of the lithium battery, for example, 85% to 99% of the rated charging voltage may be set as the output voltage. For example, the rated charging voltage is 70V, the output voltage of the adapter for activation may be selected to be 60V or 65V, and meanwhile, in some embodiments, the output voltage of the adapter may be adjusted, and after activation is completed, when the lithium battery needs to be normally charged, the output voltage may be adjusted from 60V or 65V to 70V which is equal to the rated charging voltage, so that not only the safety of the activation process can be ensured, but also the high efficiency of charging can be ensured.
The configuration of the adapter interface 130 at one end of the connection line 120 may be as shown in fig. 4, 5a, 5b, and 5c, but is not limited to this one configuration. The adapter interface can be provided with a limiting structure, a fool-proof structure and the like, so that the connection direction is ensured to be correct, and the connection is stable and reliable.
The battery interface for connecting the lithium battery, which is arranged at the other end of the connection line 120, may be correspondingly arranged according to the type of the lithium battery, or a plurality of following lines may be arranged on the main line of the connection line 120, and are respectively connected to different interfaces, which are selected according to the structure of the lithium battery in practical application. The configuration of the battery interface 140 may be as shown in fig. 6a, 6b, 7a, 7b, 8a, 8b, wherein fig. 6a, 7a, 8a are front views of the battery interface 140 with different structures, respectively, and fig. 6b, 7b, 8b are right views of the battery interface 140 with different structures, respectively, but not limited to the structures shown in the above figures. A fool-proof member may be disposed on the battery interface 140 to ensure that the polarity of the connection electrode is correct. The fool-proof member may be a non-centrosymmetric protruding member in which a positive electrode connection piece 141 and a negative electrode connection piece 142 are provided to connect the positive electrode and the negative electrode of the lithium battery, respectively.
It should be noted that, in some cases, the reason that the lithium battery cannot be charged due to the fact that the battery protection board of the lithium battery is cut off due to the fact that the electric quantity of the lithium battery is too low is that, when the lithium battery is activated, the battery interface 140 needs to be directly connected to the positive electrode and the negative electrode of the battery core of the lithium battery to ensure that the circuit is connected to activate the lithium battery.
The outer surface of the housing 110 may further be provided with an indicator 111 for reminding through different lighting manners according to different states of the adapter.
A power plug 112 may also be provided on the outside of the housing 110 for providing power to the adapter. The adapter can obtain the electric power of external power supply through power plug, convert it into the voltage and the electric current that are used for carrying out the power supply to the lithium cell, and rethread connecting wire 120 is to the lithium cell power supply. In other embodiments, a battery may be disposed inside the housing 110, and the adapter may be connected to the battery to provide power to activate the lithium battery. This kind of mode can make lithium cell activation charger 100 need not external electric power can work, and is more convenient, is adapted to multiple occasion, can activate and detect the lithium cell anytime and anywhere.
Fig. 9 is a flowchart illustrating a lithium battery activation charging method 10 according to an exemplary embodiment, and the lithium battery activation charging method 10 may be applied to the lithium battery activation charger according to any of the foregoing embodiments, as shown in fig. 9, the lithium battery activation charging method 10 includes steps S11-S15, which are described in detail below.
In step S11, a lithium battery is connected.
The connection with the lithium battery that cannot be charged can be performed through the connection line and the corresponding joint, and since the battery protection board in the lithium battery may be in a cut-off state, in some embodiments, the lithium battery needs to be detached from the product, and the battery protection board is detached, and step S11 may be to directly connect the positive electrode and the negative electrode of the cell of the lithium battery through an interface adapted to the lithium battery. Therefore, the power supply circuit is ensured to be switched on, and activation and detection are realized.
In step S12, the lithium battery is supplied with power by the supply voltage.
After the lithium battery is connected, a supply voltage is supplied to the lithium battery to form a supply current. According to the difference of lithium batteries, the power supply voltage can be correspondingly set. In order to ensure the safety of the activation process and also to avoid damage to the battery and at the same time to reduce the risk of further damage due to energization in the case of a damaged battery, in an embodiment a constant supply voltage is used to supply the lithium battery and the supply voltage is less than or equal to the rated charging voltage of the lithium battery.
For example, in a lithium battery in an electric balance car, the rated charging voltage is 63V; the rated charging voltage of the lithium battery of the electric scooter is 48V, when the lithium batteries of the two products are activated, the lithium batteries can be charged by adopting power supply voltages of 36V or 48V and the like, and the lithium batteries are tried to be activated under the condition that the power supply voltage is not more than the rated charging voltage.
In step S13, when the time of power supply reaches the first time threshold, it is detected whether the power supply current is greater than or equal to the first current threshold.
In some cases, the failure of a lithium battery to recharge may be due to damage to the battery itself, which typically only allows replacement of the battery. The lithium battery cannot be activated because the lithium battery cannot be charged due to low electric quantity. In such a case, continued attempts to activate without timely judgment may cause greater damage to the battery and even a safety risk. In this embodiment, after the power is supplied to the lithium battery for a certain time, whether the adapter successfully supplies power to the electric core of the lithium battery continuously may be determined by detecting the current. In some practical applications, the first time threshold may be ten minutes, or may be set as needed, and the first current threshold may be set to a relatively small value, and if the battery is damaged and cannot be charged, the supply current may be zero.
If the supply current is greater than or equal to the first current threshold, then step S14 is executed: and continuously supplying power to the lithium battery.
If the supply current is smaller than the first current threshold, step S15 is executed: the power supply to the lithium battery is stopped.
If the supply current is greater than or equal to the first current threshold according to the supply current detected in step S13, it indicates that the lithium battery is successfully supplied, the lithium battery is not damaged, and only the active state needs to be continuously maintained, i.e., the lithium battery continues to be supplied with power. And if the power supply current is smaller than the first current threshold, the power supply failure is indicated, the lithium battery cannot be activated, the charging failure may be caused by the damage of the battery, and at the moment, in order to avoid further damage to the battery and the safety risk of the battery, the power supply to the lithium battery can be immediately stopped. Meanwhile, in an embodiment, the method 10 for activating and charging a lithium battery further includes, if the supply current is smaller than the first current threshold, sending a first signal through a component such as an indicator light to inform an operator of information such as activation failure and activation stop, so that the operator can know the condition, power off in time, and replace the lithium battery.
According to any embodiment, the lithium battery is powered and activated by the power supply voltage, so that the safety of the battery is guaranteed, the battery can be detected in the activation process, whether the battery is damaged or not or whether the battery cannot be successfully activated due to other reasons is judged, the activation state can be kept, or the battery is stopped to be activated in time and is replaced and maintained, the activation is convenient and safe, and the cost is saved.
In an embodiment, as shown in fig. 10, the lithium battery activation charging method 10 may further include: step S16, judging whether the lithium battery is activated; if the activation is completed, a second signal may be sent through a component such as an indicator light, and step S17 may also be executed: stopping supplying power to the lithium battery through the power supply voltage; or transmits the second signal while performing step S17. If the activation is not completed, the step S14 is continuously performed to supply power to the lithium battery. In this example, after the activation of the lithium battery is determined to have been completed, that is, the lithium battery may be charged in the normal charging mode, the operator may be notified by the prompt, and the power supply may be automatically stopped by the supply voltage. In other embodiments, the power supply may be maintained, and the lithium battery may be charged by the power supply voltage, but the charging speed is slower because the power supply voltage for activation is lower, which is often lower than the charging voltage for normal charging of the lithium battery.
Based on the above embodiments, in some embodiments, the lithium battery activation charging method 10 may further include: and if the activation is finished, supplying power to the lithium battery through a charging voltage, wherein the charging voltage is greater than or equal to the power supply voltage. In this embodiment, after the activation is completed, the battery is already activated at this time, so that normal charging can be performed, and when the power supply voltage is lower than the rated charging voltage of the lithium battery, the battery can be charged with the same voltage as the rated voltage. After the activation is realized, the lithium battery can be continuously charged more quickly and efficiently without replacing the charger again.
In an embodiment, the step S16 of determining whether the lithium battery is activated may be performed by: if the voltage of the lithium battery is greater than or equal to the discharge cut-off voltage, or if the power supply time reaches a second time threshold, judging that the lithium battery is activated; and if the voltage of the lithium battery is smaller than the discharge cut-off voltage, or if the power supply time does not reach the second time threshold, judging that the lithium battery is not activated. In this embodiment, two ways of determining whether activation is completed are provided. The lithium battery is activated when the voltage reaches the discharge cut-off voltage, and normal charging can be carried out. Another way is to determine whether the power supply time reaches a second time threshold, and according to the activation time, it may also be roughly determined whether the activation has been completed, and the second time threshold may be determined according to the actually activated lithium battery and the actually supplied power voltage, for example, thirty minutes.
In one embodiment, the lithium battery active charging method 10 may further include: detecting whether the voltage of the lithium battery is greater than or equal to a charge cut-off voltage; if the voltage of the lithium battery is greater than or equal to the cut-off voltage of the charging, sending a third signal and/or stopping supplying power to the lithium battery; and if the voltage of the lithium battery is less than the charge cut-off voltage, continuously supplying power to the lithium battery. In this embodiment, whether the lithium battery is fully charged can be determined by whether the voltage of the lithium battery is greater than or equal to the charge cut-off voltage, where the charge cut-off voltage of the lithium battery is the highest value of the voltage of the lithium battery in the normal charging process. Under the condition that lithium battery voltage reaches the cut-off voltage that charges, can stop to the lithium cell power supply, can also send the third signal through parts such as pilot lamp simultaneously for remind operating personnel. Through the mode of this embodiment, protection battery that can be more, extension battery life reduces the impaired risk of battery.
In an embodiment, as shown in fig. 11, before step S11, the lithium battery activation charging method 10 may further include: step S18, detecting whether the lithium battery is short-circuited; if the lithium battery has no short circuit, step S11 is executed. In this embodiment, before the lithium battery is connected and activation is attempted, whether the lithium battery has a short circuit or not may be detected first, so as to avoid a risk caused by providing a supply voltage to the lithium battery after activation is started. The detection can be carried out through a pole piece arranged on the adapter, and in other cases, the short circuit detection can also be carried out through a device such as a multimeter arranged independently.
In one embodiment, the lithium battery active charging method 10 may further include: detecting whether the supply current is greater than or equal to a second current threshold; if the power supply current is larger than the second current threshold, after the power supply is suspended for a preset time, the lithium battery is supplied with power again, and whether the power supply current is larger than or equal to the second current threshold is detected; and if the power supply current is less than or equal to the second current threshold, continuing to supply power to the lithium battery. In the embodiment, through setting the overcurrent protection, damage to the battery caused by overlarge current and even short circuit in the activating and charging processes is avoided, and particularly, the current needs to be controlled in the activating process, so that the safety of the battery is ensured. For example, when activating the lithium battery of the electric balance car or the electric scooter, the second current threshold may be 1000mA or 500 mA. And after the overcurrent phenomenon, can get into "hiccup mode", supply power again after a terminal time that suspends power supply promptly to detect simultaneously, if the current value resumes normally, then normal power supply, if the current value exceeds the second current threshold value, then last "hiccup mode", and send out tip information, simultaneously, if can not resume continuously, then can carry out the outage and handle.
In one embodiment, the lithium battery active charging method 10 may further include: detecting whether a power supply voltage for supplying power to the lithium battery is greater than or equal to a voltage threshold value; if the power supply voltage is greater than the voltage threshold, stopping supplying power to the lithium battery, or reducing the power supply voltage to enable the power supply voltage to be less than or equal to the voltage threshold; and if the power supply voltage is less than or equal to the voltage threshold, continuing to supply power to the lithium battery. Similar to the foregoing embodiment, by providing the overvoltage protection, damage to the battery due to an excessive voltage during activation and charging is avoided, and when the supply voltage is too high, power supply to the lithium battery can be immediately stopped to protect the safety of the lithium battery, and the supply voltage can also be reduced to enable power supply to be in a safe state.
Based on the same conception, the embodiment of the disclosure also provides a lithium battery activation charging device.
It is understood that, in order to implement the above functions, the lithium battery activation and charging device provided in the embodiments of the present disclosure includes a hardware structure and/or a software module for performing each function. The disclosed embodiments can be implemented in hardware or a combination of hardware and computer software, in combination with the exemplary elements and algorithm steps disclosed in the disclosed embodiments. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.
Fig. 12 is a block diagram illustrating a lithium battery activated charging device according to an exemplary embodiment. Referring to fig. 12, the lithium battery activation charging apparatus 200 includes a connection module 210, a power supply module 220, a timing module 230, and a detection module 240.
The connection module 210 is configured to connect lithium batteries; a power supply module 220 for supplying power to the lithium battery through a supply voltage; a timing module 230 for determining the time of power supply; a detecting module 240, configured to detect whether the power supply current is greater than or equal to a first current threshold when the power supply time reaches the first time threshold; the power supply module 220 is further configured to continue to supply power to the lithium battery when the supply current is greater than or equal to the first current threshold; and when the power supply current is smaller than the first current threshold value, stopping supplying power to the lithium battery.
In one embodiment, as shown in fig. 13, the lithium battery activation charging device 200 further includes: a prompt module 250; the prompting module 250 is configured to send a first signal when the supply current is less than a first current threshold.
In one embodiment, as shown in fig. 13, the lithium battery activation charging device 200 further includes: a prompt module 250; the prompting module 250 is configured to send a second signal when the lithium battery is activated; the power supply module 220 is further configured to stop supplying power to the lithium battery when the lithium battery is activated.
In one embodiment, the detecting module 240 is further configured to detect a voltage of the lithium battery; the prompting module 250 is further configured to send a second signal when the voltage of the lithium battery is greater than or equal to the discharge cutoff voltage, or when the power supply time reaches a second time threshold; the power supply module 220 is further configured to stop supplying power to the lithium battery when the voltage of the lithium battery is greater than or equal to the discharge cutoff voltage, or when the time for supplying power reaches a second time threshold.
In an embodiment, the power supply module 220 is further configured to supply power to the lithium battery through a charging voltage when the lithium battery is activated, wherein the charging voltage is greater than or equal to the power supply voltage.
In an embodiment, the prompting module 250 is further configured to send a third signal when the voltage of the lithium battery is greater than or equal to the charge cut-off voltage; the power supply module 220 is further configured to stop supplying power to the lithium battery when the voltage of the lithium battery is greater than or equal to the charge cut-off voltage.
In an embodiment, the power supply module 220 is further configured to supply power to the lithium battery with a constant power supply voltage, where the power supply voltage is less than or equal to a rated charging voltage of the lithium battery.
In an embodiment, the connection module 210 directly connects the positive electrode and the negative electrode of the cell of the lithium battery through an interface adapted to the lithium battery.
In one embodiment, the lithium battery activation charging device 200 further comprises: the short circuit detection module is used for detecting whether the lithium battery is short-circuited or not; the connection module 210 is used to connect the lithium battery when there is no short circuit in the lithium battery.
In one embodiment, the detecting module 240 is further configured to detect a supply current; the power supply module 220 is further configured to, when the supply current is greater than the second current threshold, suspend power supply to the lithium battery, and supply power to the lithium battery again after a preset time; and when the power supply current is less than or equal to the second current threshold, continuing to supply power to the lithium battery.
In one embodiment, the detecting module 240 is further configured to detect a supply voltage for supplying power to the lithium battery; the power supply module 220 is further configured to stop supplying power to the lithium battery when the power supply voltage is greater than the voltage threshold, or reduce the power supply voltage to make the power supply voltage less than or equal to the voltage threshold; and when the power supply voltage is less than or equal to the voltage threshold value, continuously supplying power to the lithium battery.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
Fig. 13 is a block diagram illustrating an apparatus 800 for lithium battery active charging, according to an example embodiment. For example, the apparatus 800 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.
Referring to fig. 14, the apparatus 800 may include one or more of the following components: a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component 814, and a communication component 816.
The processing component 802 generally controls overall operation of the device 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 802 may include one or more processors 820 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 802 can include one or more modules that facilitate interaction between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.
The memory 804 is configured to store various types of data to support operations at the apparatus 800. Examples of such data include instructions for any application or method operating on device 800, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 804 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The multimedia component 808 includes a screen that provides an output interface between the device 800 and a user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 800 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a Microphone (MIC) configured to receive external audio signals when the apparatus 800 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 804 or transmitted via the communication component 816. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.
The I/O interface 812 provides an interface between the processing component 802 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
The sensor assembly 814 includes one or more sensors for providing various aspects of state assessment for the device 800. For example, the sensor assembly 814 may detect the open/closed status of the device 800, the relative positioning of components, such as a display and keypad of the device 800, the sensor assembly 814 may also detect a change in the position of the device 800 or a component of the device 800, the presence or absence of user contact with the device 800, the orientation or acceleration/deceleration of the device 800, and a change in the temperature of the device 800. Sensor assembly 814 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 816 is configured to facilitate communications between the apparatus 800 and other devices in a wired or wireless manner. The device 800 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the apparatus 800 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.
In an exemplary embodiment, a non-transitory computer-readable storage medium comprising instructions, such as the memory 804 comprising instructions, executable by the processor 820 of the device 800 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
Fig. 15 is a block diagram illustrating an apparatus 1100 for active charging of a lithium battery according to an example embodiment. For example, the apparatus 1100 may be provided as a server. Referring to fig. 15, the apparatus 1100 includes a processing component 1122 that further includes one or more processors and memory resources, represented by memory 1132, for storing instructions, such as application programs, executable by the processing component 1122. The application programs stored in memory 1132 may include one or more modules that each correspond to a set of instructions. Further, processing component 1122 is configured to execute instructions to perform the lithium battery activation charging method described above.
The apparatus 1100 may also include a power component 1126 configured to perform power management of the apparatus 1100, a wired or wireless network interface 1150 configured to connect the apparatus 1100 to a network, and an input/output (I/O) interface 1158. The apparatus 1100 may operate based on an operating system stored in the memory 1132, such as Windows Server, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, or the like.
It is understood that "a plurality" in this disclosure means two or more, and other words are analogous. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. The singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It will be further understood that the terms "first," "second," and the like are used to describe various information and that such information should not be limited by these terms. These terms are only used to distinguish one type of information from another and do not denote a particular order or importance. Indeed, the terms "first," "second," and the like are fully interchangeable. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure.
It will be further understood that the terms "central," "longitudinal," "lateral," "front," "rear," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the present embodiment and to simplify the description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation.
It will be further understood that, unless otherwise specified, "connected" includes direct connections between the two without the presence of other elements, as well as indirect connections between the two with the presence of other elements.
It is further to be understood that while operations are depicted in the drawings in a particular order, this is not to be understood as requiring that such operations be performed in the particular order shown or in serial order, or that all illustrated operations be performed, to achieve desirable results. In certain environments, multitasking and parallel processing may be advantageous.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof.
Claims (22)
1. A method for active charging of a lithium battery, the method comprising:
connecting a lithium battery;
supplying power to the lithium battery through a supply voltage;
when the power supply time reaches a first time threshold value, detecting whether the power supply current is greater than or equal to the first current threshold value;
if the power supply current is larger than or equal to the first current threshold value, continuing to supply power to the lithium battery;
if the power supply current is smaller than the first current threshold value, stopping supplying power to the lithium battery;
detecting whether the supply current is greater than or equal to a second current threshold, the second current threshold being greater than the first current threshold;
if the power supply current is larger than a second current threshold, after the power supply is suspended for a preset time, the lithium battery is supplied with power again, and whether the power supply current is larger than or equal to the second current threshold is detected;
if the power supply current is less than or equal to a second current threshold value, continuing to supply power to the lithium battery;
if the power supply current is larger than a second current threshold value, the power supply to the lithium battery is interrupted;
judging whether the lithium battery is activated or not;
if the activation is finished, supplying power to the lithium battery through a charging voltage, wherein the charging voltage is greater than the power supply voltage;
and if the activation is not completed, stopping supplying power to the lithium battery through the power supply voltage.
2. The active charging method for lithium battery as claimed in claim 1, further comprising:
and if the power supply current is smaller than the first current threshold value, sending a first signal.
3. The active charging method for lithium battery as claimed in claim 1, further comprising:
and if the activation is finished, sending a second signal.
4. The active charging method for lithium battery as claimed in claim 3, wherein the determination of whether the lithium battery is activated is made by:
if the voltage of the lithium battery is greater than or equal to the discharge cut-off voltage, or if the power supply time reaches a second time threshold, judging that the lithium battery is activated;
and if the voltage of the lithium battery is smaller than the discharge cut-off voltage, or if the power supply time does not reach a second time threshold, judging that the lithium battery is not activated.
5. The active charging method for lithium battery as claimed in any one of claims 3 to 4, wherein said method further comprises:
detecting whether the voltage of the lithium battery is greater than or equal to a charge cut-off voltage;
if the voltage of the lithium battery is greater than or equal to the cut-off voltage of charging, sending a third signal and/or stopping supplying power to the lithium battery;
and if the voltage of the lithium battery is less than the charge cut-off voltage, continuously supplying power to the lithium battery.
6. The active charging method for lithium battery as claimed in claim 1, wherein said supplying power to said lithium battery by means of a supply voltage and a supply current comprises:
and supplying power to the lithium battery by using a constant power supply voltage, wherein the power supply voltage is less than or equal to the rated charging voltage of the lithium battery.
7. The active charging method for lithium battery as claimed in claim 1, wherein said lithium battery is connected by:
and directly connecting the positive electrode and the negative electrode of the electric core of the lithium battery through an interface adaptive to the lithium battery.
8. The active charging method for lithium battery as claimed in claim 1, wherein before said connecting a lithium battery, said method further comprises:
and detecting whether the lithium battery is short-circuited, and if the lithium battery is not short-circuited, executing the connection of the lithium battery.
9. The active charging method for lithium battery as claimed in claim 1, further comprising:
detecting whether a supply voltage for supplying power to the lithium battery is greater than or equal to a voltage threshold;
if the power supply voltage is greater than the voltage threshold, stopping supplying power to the lithium battery, or reducing the power supply voltage to enable the power supply voltage to be less than or equal to the voltage threshold;
and if the power supply voltage is less than or equal to the voltage threshold, continuing to supply power to the lithium battery.
10. A lithium battery activated charging apparatus, comprising:
the connecting module is used for connecting the lithium battery;
the power supply module is used for supplying power to the lithium battery through power supply voltage;
the timing module is used for determining the power supply time;
the detection module is used for detecting whether the power supply current is greater than or equal to a first current threshold value or not when the power supply time reaches the first time threshold value;
the power supply module is further used for continuously supplying power to the lithium battery when the power supply current is larger than or equal to a first current threshold value; when the power supply current is smaller than the first current threshold, stopping supplying power to the lithium battery; judging whether the lithium battery is activated or not; if the activation is finished, supplying power to the lithium battery through a charging voltage, wherein the charging voltage is greater than the power supply voltage; if the activation is not completed, stopping supplying power to the lithium battery through the power supply voltage; the detection module is also used for detecting the power supply current;
the power supply module is further used for suspending power supply to the lithium battery when the power supply current is larger than a second current threshold value, and supplying power to the lithium battery again after preset time; when the power supply current is smaller than or equal to a second current threshold value, continuing to supply power to the lithium battery; and when the power supply current is larger than a second current threshold value, the power supply to the lithium battery is interrupted, wherein the second current threshold value is larger than the first current threshold value.
11. The lithium battery activated charging apparatus of claim 10, further comprising: a prompt module;
the prompting module is used for sending a first signal when the power supply current is smaller than the first current threshold value.
12. The lithium battery activated charging apparatus of claim 10, further comprising: a prompt module;
and the prompting module is used for sending a second signal when the lithium battery is activated.
13. The lithium battery active charging apparatus as set forth in claim 12,
the detection module is also used for detecting the voltage of the lithium battery;
the prompting module is further used for sending the second signal when the voltage of the lithium battery is greater than or equal to the discharge cut-off voltage or the power supply time reaches a second time threshold;
the power supply module is further used for stopping supplying power to the lithium battery when the voltage of the lithium battery is greater than or equal to the discharge cutoff voltage or when the power supply time reaches a second time threshold.
14. An active charging device for lithium batteries according to any one of claims 12 to 13, characterized in that,
the prompting module is further used for sending a third signal when the voltage of the lithium battery is greater than or equal to the charge cut-off voltage;
the power supply module is also used for stopping supplying power to the lithium battery when the voltage of the lithium battery is greater than or equal to the charge cut-off voltage.
15. The lithium battery-activated charging apparatus of claim 10, wherein the power module is further configured to supply power to the lithium battery at a constant supply voltage, wherein the supply voltage is less than or equal to a rated charging voltage of the lithium battery.
16. The lithium battery-activated charging device of claim 15, wherein the connection module directly connects the positive electrode and the negative electrode of the cell of the lithium battery through an interface adapted to the lithium battery.
17. The lithium battery activated charging apparatus of claim 10, further comprising: the short circuit detection module is used for detecting whether the lithium battery is short-circuited or not;
the connection module is used for connecting the lithium battery when the lithium battery has no short circuit.
18. Active charging device for lithium batteries according to claim 10,
the detection module is also used for detecting the power supply voltage for supplying power to the lithium battery;
the power supply module is further used for stopping supplying power to the lithium battery or reducing the power supply voltage to enable the power supply voltage to be smaller than or equal to the voltage threshold when the power supply voltage is larger than the voltage threshold; and when the power supply voltage is less than or equal to the voltage threshold value, continuing to supply power to the lithium battery.
19. A lithium battery activation charger, characterized by comprising:
an adapter;
one end of the connecting wire is connected with the adapter, and the other end of the connecting wire is provided with a battery interface for connecting a lithium battery;
the lithium battery activation charger for supplying power to the lithium battery by the lithium battery activation charging method as recited in any one of claims 1 to 9.
20. The lithium battery activated charger of claim 19, wherein the battery interface is provided with a fool-proof member that mates with the cell positive and negative interfaces of the lithium battery.
21. An electronic device, comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to: -performing a lithium battery active charging method as claimed in any one of claims 1 to 9.
22. A non-transitory computer readable storage medium, wherein instructions when executed by a processor implement the lithium battery active charging method as claimed in any one of claims 1 to 9.
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| CN112886687A (en) * | 2021-04-09 | 2021-06-01 | 深圳云动未来科技有限公司 | Battery charging method, device, system, charger, medium and product |
| CN116667468B (en) * | 2022-02-17 | 2023-12-26 | 荣耀终端有限公司 | Electronic equipment |
| CN115473302A (en) * | 2022-08-04 | 2022-12-13 | 浙江雷亚电子有限公司 | Lithium battery emergency charging system |
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| US7508091B2 (en) * | 2005-03-08 | 2009-03-24 | Abott-Interfast Corporation | Vehicle battery protection device |
| TWI332302B (en) * | 2006-02-16 | 2010-10-21 | O2Micro Int Ltd | Variable wake up level current circuit, variable wake up current circuit, and battery charging apparatus |
| CN201100864Y (en) * | 2007-11-30 | 2008-08-13 | 成都建中锂电池有限公司 | Lithium battery activation detection table |
| CN103078369B (en) * | 2012-12-27 | 2015-09-09 | 青岛歌尔声学科技有限公司 | Lithium battery power shortage active device |
| CN104009265B (en) * | 2014-05-22 | 2016-08-17 | Tcl通讯（宁波）有限公司 | A kind of battery activated method and apparatus of mobile terminal |
| CN105119351B (en) * | 2015-09-29 | 2017-10-13 | 小米科技有限责任公司 | Battery activated equipment |
| US10326296B2 (en) * | 2016-02-01 | 2019-06-18 | Qualcomm Incorporated | Dual-phase operation for concurrently charging a battery and powering a peripheral device |
| CN107834622A (en) * | 2017-10-20 | 2018-03-23 | 合肥成科电子科技有限公司 | A kind of lithium battery activates control system automatically |
| CN108365276B (en) * | 2018-01-09 | 2021-02-26 | 海能达通信股份有限公司 | Activation circuit and activation method thereof, battery protection circuit and battery |
| CN110350624B (en) * | 2019-07-22 | 2021-01-26 | 奇越科技(北京)有限公司 | Intelligent battery overdischarge failure protection device and method |
| CN210225029U (en) * | 2019-09-16 | 2020-03-31 | 深圳市沃威斯电子科技有限公司 | Connecting device capable of activating built-in battery and auxiliary maintenance of mobile phone |
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