CN216530585U - Integrated circuit board for rechargeable battery - Google Patents
Integrated circuit board for rechargeable battery Download PDFInfo
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- CN216530585U CN216530585U CN202120396471.4U CN202120396471U CN216530585U CN 216530585 U CN216530585 U CN 216530585U CN 202120396471 U CN202120396471 U CN 202120396471U CN 216530585 U CN216530585 U CN 216530585U
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- integrated circuit
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- battery pack
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Abstract
The utility model discloses an integrated circuit board for a rechargeable battery. The integrated circuit board is connected to the negative pole of the battery pack; the integrated circuit board is provided with a charging channel used for being connected to an external charging power supply and a discharging channel used for being connected to a load, wherein the charging channel and the discharging channel are mutually independent and are respectively provided with a first controllable switch, and the integrated circuit board is also provided with a resistor connected to each battery unit in the battery pack through a second controllable switch.
Description
Technical Field
The utility model relates to the technical field of new energy, in particular to an integrated circuit board for a rechargeable battery.
Background
Along with the development of industry, the pressure of energy and environment on human beings is increasing, and the demand for improving the living environment of human beings as soon as possible is higher and higher; to meet this trend, development efforts and commercialization of battery energy are increasing. Batteries play an indispensable and important role as important components of electric automobiles and logistics robots.
The conventional single battery is low in voltage, and when the battery pack is actually used, a plurality of batteries are connected in series and in parallel to form a battery pack so as to adjust the voltage and the capacity. If the battery pack is used for directly supplying power to a load or a charger is used for directly charging the battery pack, the method is very dangerous and easily causes the following problems: the battery pack is generally higher in voltage and larger in capacity, and is very easy to damage or even fire due to overvoltage, overcurrent and short circuit when being directly used; the parameters such as voltage, current and electric quantity are uncontrollable, the performance and the state of the battery cannot be ensured, and the battery pack is easy to break down. The service condition and health degree of the battery pack cannot be obtained, and the maintenance and repair are difficult.
SUMMERY OF THE UTILITY MODEL
To solve or alleviate the above-mentioned problems in the prior art, the present disclosure proposes an integrated circuit board for a rechargeable battery.
In one embodiment of the integrated circuit board according to the present invention, the integrated circuit board is connected to a negative electrode of a battery pack; the integrated circuit board is provided with a charging channel used for being connected to an external charging power supply and a discharging channel used for being connected to a load, wherein the charging channel and the discharging channel are mutually independent and are respectively provided with a first controllable switch, and the integrated circuit board is also provided with a resistor connected to each battery unit in the battery pack through a second controllable switch.
Preferably, the integrated circuit board may be provided with a current monitoring device, a voltage monitoring device, and a temperature monitoring device for detecting the respective battery cells. Furthermore, the integrated circuit board is connected with a management control module.
In another aspect of the present disclosure, a battery management system is provided, where the battery management system includes the foregoing integrated circuit board and a management control module connected to the integrated circuit board, and the battery management system further includes a storage for storing reference values of voltage, temperature and cycle number of a preset battery pack. Preferably, the management control module is connected to each of said first controllable switches and each of said second controllable switches.
In one embodiment of the battery management system according to the present invention, the management control module may be provided with a counter for recording the number of battery charge and discharge times.
Further preferably, the battery management system may be provided with an alarm device for issuing an under-voltage, over-voltage warning under predetermined conditions and a switch controller for controlling the first and second controllable switches.
By adopting the integrated circuit board and the battery management system, the utility model has the advantages that: the battery can be used more safely, the state of the battery can be monitored in time, measures can be taken, the battery can be charged, discharged and used safely, and meanwhile, the state of the battery can be monitored more directly.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the disclosure, as claimed.
Drawings
Further objects, features and advantages of the present disclosure will become apparent from the following description of embodiments of the present disclosure, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of one embodiment of an integrated circuit board and battery management system incorporating the present invention;
fig. 2 is a schematic diagram of an example of an application equipped with an integrated circuit board according to the utility model.
Description of reference numerals: 100: an integrated circuit board; 110: a discharge channel; 120: a charging channel; s1: a first controllable switch; s2: a second controllable switch; r130: a resistance; 200: a load; 300: a battery pack; 310: a battery cell; 400: a charging power supply; 500: and managing the control module.
Detailed Description
The objects and functions of the present disclosure and methods for accomplishing the same will be apparent by reference to the exemplary embodiments. However, the present disclosure is not limited to the exemplary embodiments disclosed below; it can be implemented in different forms. The nature of the description is merely to assist those skilled in the relevant art in a comprehensive understanding of the specific details of the disclosure.
According to one aspect of the present application, an integrated circuit board for a rechargeable battery is presented.
Fig. 1 is a schematic diagram of an embodiment to which an integrated circuit board and a battery management system according to the present invention are applied. The specific construction of the integrated circuit board is omitted in this view.
In this exemplary embodiment, the integrated circuit board 100 is connected to the negative electrode of the battery pack 300. The charging power supply 400 may charge the battery pack 300 via a charging channel of the integrated circuit board 100. The battery pack 300 includes a plurality of battery cells 310. The battery pack 300 is connected to the load 200 to supply power thereto. The battery management system 500 performs data communication with the integrated circuit board 100, acquires related data, analyzes the data, and then issues a control command.
Specifically, reference may be made to the configuration in the integrated circuit board 100 shown in fig. 2. The integrated circuit board 100 is provided with a charging channel 120 externally connected to a charging power supply 400 and a discharging channel 110 for connection to a load 200. The charging path 120 and the discharging path 110 are independent of each other and are each provided with a first controllable switch S1.
The integrated circuit board is also provided with a resistor R130 connected to each cell 310 in the battery pack 300 via a second controllable switch S2.
Preferably, the integrated circuit board may be provided with a current monitoring device, a voltage monitoring device, and a temperature monitoring device (not shown) for detecting the respective battery cells. Further, a management control module 500 is connected to the integrated circuit board according to the present invention.
In another aspect of the present disclosure, a battery management system is provided, which includes the integrated circuit board 100 and the management control module 500 connected to the integrated circuit board. The battery management system further comprises a memory for storing reference values of voltage, temperature and cycle number of the preset battery pack. Preferably, the supervisory control module is connected to each of the first controllable switches and each of the second controllable switches by an electrical communication link.
In one embodiment of the battery management system according to the present invention, the management control module may be provided with a counter for recording the number of battery charge and discharge times.
Further preferably, the battery management system may be provided with an alarm device for issuing an under-voltage, over-voltage warning under predetermined conditions and a switch controller for controlling the first and second controllable switches.
The integrated circuit board provided by the utility model is matched with a battery management system, so that a user can use the battery pack more safely, conveniently and comprehensively.
The battery management system can acquire the values of the current discharged by the battery pack through the integrated circuit board, the charged current, the total voltage of the battery pack, the voltage of each battery and the temperature of the inductive probe, so that the values of the discharged electric quantity, the charged electric quantity and the residual electric quantity of the battery pack can be calculated.
The battery management system compares the acquired current value with the system internal parameter value, and immediately closes the channel of the integrated circuit board when the system internal parameter value is exceeded, so that the battery pack and the load equipment are protected. The battery management system feeds the calculated electric quantity value back to the user, so that the service condition and the health degree of the battery pack are reflected, and the user can use the battery more reasonably and maintain the battery. The battery management system feeds back an undervoltage warning and an overvoltage warning to a user through the voltage value and the residual electric quantity value of each battery; if the user does not process the warning, the intelligent battery management system can close the channel of the integrated circuit board, so that the battery pack is protected, and the over-discharge and over-charge of the battery pack are avoided.
For example, in one embodiment, the charge and discharge are calculated in the battery management system using ampere-hour integration.
Remaining capacity-nominal capacity-discharged capacity
Residual capacity% -residual capacity/nominal capacity
The integrated circuit board is connected to the negative electrode of the battery pack power supply, and two independent channels for charging and discharging are arranged on the integrated circuit board and can be opened and closed respectively. When a fault condition is detected, the corresponding channel can be immediately closed, and the function of protecting the battery pack and the load equipment is achieved.
In the charging process, when the voltage of the single battery is higher than a set overvoltage value, the integrated circuit board closes the charging channel, so that the battery pack is prevented from being overcharged, and the charging is finished; at the moment, the discharge channel is not affected, and the battery pack can discharge normally. In the discharging process, when the voltage of the single battery is lower than the set undervoltage value, the integrated circuit board closes the discharging channel, so that the over-discharge of the battery pack is avoided, and the discharging is finished; at the moment, the charging channel is not affected, and the battery pack can be charged normally.
The battery management system can set internal parameters of the cycle capacity and the cycle times, and when the accumulated charge capacity and the accumulated discharge capacity reach the cycle capacity, the cycle times are increased by one; the user can clearly know the use times and the health degree of the battery pack through the value of the cycle times, and a maintenance plan is conveniently made.
During the discharging and charging processes, the SOC is continuously calibrated by referring to a comparison table of the battery voltage and the battery capacity, so that the SOC display is more accurate.
The integrated circuit board contains a resistor, when the voltage difference of the single battery is detected to be overlarge, the resistor can be used for discharging to enable the high-voltage battery to emit a part of electric quantity, the high-voltage battery is enabled to be close to the lowest-voltage battery as much as possible, and therefore the voltage difference between the batteries is reduced. An overpressure release function: when the voltage of the battery reaches a set overvoltage protection value, the channel is automatically closed; the channel automatically opens when the battery voltage drops to a set over-voltage relief value. The technical scheme of the utility model can realize the function of undervoltage release: when the voltage of the battery reaches a set undervoltage protection value, the channel is automatically closed; when the battery voltage rises to a set undervoltage release value, the channel is automatically opened.
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. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (3)
1. An integrated circuit board for a rechargeable battery, wherein the integrated circuit board is connected to a negative pole of a battery pack; the integrated circuit board is provided with a charging channel used for being connected to an external charging power supply and a discharging channel used for being connected to a load, wherein the charging channel and the discharging channel are mutually independent and are respectively provided with a first controllable switch, and the integrated circuit board is also provided with a resistor connected to each battery unit in the battery pack through a second controllable switch.
2. The integrated circuit board according to claim 1, wherein the integrated circuit board is provided with a current monitoring device, a voltage monitoring device and a temperature monitoring device for detecting each battery cell.
3. The integrated circuit board of claim 1, wherein a management control module is coupled to the integrated circuit board, the management control module being coupled to the first controllable switch and the second controllable switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120396471.4U CN216530585U (en) | 2021-02-23 | 2021-02-23 | Integrated circuit board for rechargeable battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120396471.4U CN216530585U (en) | 2021-02-23 | 2021-02-23 | Integrated circuit board for rechargeable battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216530585U true CN216530585U (en) | 2022-05-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120396471.4U Active CN216530585U (en) | 2021-02-23 | 2021-02-23 | Integrated circuit board for rechargeable battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216530585U (en) |
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2021
- 2021-02-23 CN CN202120396471.4U patent/CN216530585U/en active Active
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