CN220022322U - BMS protection board - Google Patents
BMS protection board Download PDFInfo
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- CN220022322U CN220022322U CN202320615428.1U CN202320615428U CN220022322U CN 220022322 U CN220022322 U CN 220022322U CN 202320615428 U CN202320615428 U CN 202320615428U CN 220022322 U CN220022322 U CN 220022322U
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- 230000009467 reduction Effects 0.000 claims abstract description 5
- 239000003990 capacitor Substances 0.000 claims description 109
- 230000000087 stabilizing effect Effects 0.000 claims description 41
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 1
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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)
Abstract
The embodiment of the utility model provides a BMS protection plate, and belongs to the technical field of maintenance of battery packs. The BMS protection plate includes: the USB interface is used for accessing the USB interface; the first end of the voltage reducing module is connected with the first end of the USB connector, and the second end of the voltage reducing module is connected with the second end of the USB connector; the first end of the triggering module is connected with the second end of the USB connector; the first end of the control module is connected with the second end of the trigger module; the first end of the switch module is connected with the third end of the voltage reduction module, the second end of the switch module is connected with the control module, and the third end of the switch module is used for being connected to the battery pack. The BMS protection plate can reduce the loss of the battery pack.
Description
Technical Field
The utility model relates to the technical field of maintenance of battery packs, in particular to a BMS protection plate.
Background
With the development of technology, cordless electric tools are becoming more popular, which in turn drives the use of battery packs. The existing battery pack BMS protection board of the electric tool has the main functions of overcharge, overdischarge and overcurrent protection, and can only supply power for the electric tool. On the one hand, the function of the protection board is relatively single, on the other hand, when the USB port is not connected, the battery pack still needs to supply power to the USB port, which obviously leads to the reduction of the service life of the battery pack.
Disclosure of Invention
An object of an embodiment of the present utility model is to provide a BMS protection plate capable of reducing the loss of a battery pack.
In order to achieve the above object, an embodiment of the present utility model provides a BMS protection plate, including:
the USB interface is used for accessing the USB interface;
the first end of the voltage reducing module is connected with the first end of the USB connector, and the second end of the voltage reducing module is connected with the second end of the USB connector;
the first end of the triggering module is connected with the second end of the USB connector;
the first end of the control module is connected with the second end of the trigger module;
the first end of the switch module is connected with the third end of the voltage reduction module, the second end of the switch module is connected with the control module, and the third end of the switch module is used for being connected to the battery pack.
Optionally, the step-down module includes:
the negative electrode of the first diode is connected with the first end of the USB connector;
one end of the first resistor is connected with the positive electrode of the first diode, and the other end of the first resistor is connected with the second end of the USB connector;
one end of the first capacitor is connected with one end of the first resistor, and the other end of the first capacitor is connected with the other end of the first resistor;
one end of the second capacitor is connected with one end of the first capacitor;
one end of the third capacitor is connected with one end of the second capacitor, and the other end of the third capacitor is connected with the other end of the second capacitor;
one end of the first inductor is connected with one end of the third capacitor;
the cathode of the second diode is connected with the other end of the first inductor, and the anode of the second diode is connected with the other end of the third capacitor;
the first end of the voltage stabilizing chip is connected with the eighth end of the voltage stabilizing chip, the second end of the voltage stabilizing chip is connected with the negative electrode of the second diode, and the fourth end of the voltage stabilizing chip is grounded;
one end of the fourth capacitor is connected with the third end of the voltage stabilizing chip, and the other end of the fourth capacitor is grounded and connected with the fourth end of the voltage stabilizing chip;
one end of the second resistor is connected with the seventh end of the voltage stabilizing chip, and the other end of the second resistor is connected with the switch module;
one end of the fifth capacitor is connected with the other end of the second resistor and the sixth end of the voltage stabilizing chip, and the other end of the fifth capacitor is grounded;
one end of the third resistor is connected with the other end of the fifth capacitor, and the other end of the third resistor is connected with the fifth end of the voltage stabilizing chip;
one end of the fourth resistor is connected with the other end of the third resistor, and the other end of the fourth resistor is used for being externally connected with positive voltage of +5V;
and one end of the fifth resistor is connected with one end of the fourth resistor, and the other end of the fifth resistor is connected with the other end of the fourth resistor.
Optionally, the switch module includes:
a sixth resistor, one end of which is used for being connected with the battery pack;
the drain electrode of the first MOS tube is connected with one end of the sixth resistor, the source electrode of the first MOS tube is connected with the other end of the second resistor, and the grid electrode of the first MOS tube is connected with the other end of the sixth resistor;
a seventh resistor, one end of which is connected with the other end of the sixth resistor;
the collector of the first triode is connected with the other end of the seventh resistor, and the emitter of the first triode is grounded;
one end of the eighth resistor is connected with the base electrode of the first triode, and the other end of the eighth resistor is connected with the control module;
and one end of the ninth resistor is connected with one end of the eighth resistor, and the other end of the ninth resistor is connected with the emitter of the first triode.
Optionally, the triggering module includes:
a tenth resistor, one end of which is connected with the other end of the first resistor, and the other end of which is grounded;
an eleventh resistor, wherein one end of the eleventh resistor is connected with one end of the tenth resistor, and the other end of the eleventh resistor is connected with the control module;
and one end of the seventh capacitor is connected with the other end of the eleventh resistor, and the other end of the seventh capacitor is grounded.
Optionally, the control module includes:
the fifteenth pin of the singlechip chip is connected with one end of the eleventh resistor, and the nineteenth pin of the singlechip chip is connected with the other end of the eighth resistor;
and one end of the sixth capacitor is connected with the first pin of the singlechip chip, and the other end of the sixth capacitor is connected with the twentieth pin of the singlechip chip.
On the other hand, the utility model also provides a BMS, which comprises a BMS body and a BMS protection board, wherein the BMS body comprises a USB connector for being connected with the USB connector, and the BMS protection board comprises;
the first end of the voltage reducing module is connected with the first end of the USB connector, and the second end of the voltage reducing module is connected with the second end of the USB connector;
the first end of the triggering module is connected with the second end of the USB connector;
the first end of the control module is connected with the second end of the trigger module;
the first end of the switch module is connected with the third end of the voltage reduction module, the second end of the switch module is connected with the control module, and the third end of the switch module is used for being connected to the battery pack.
Optionally, the step-down module includes:
the negative electrode of the first diode is connected with the first end of the USB connector;
one end of the first resistor is connected with the positive electrode of the first diode, and the other end of the first resistor is connected with the second end of the USB connector;
one end of the first capacitor is connected with one end of the first resistor, and the other end of the first capacitor is connected with the other end of the first resistor;
one end of the second capacitor is connected with one end of the first capacitor;
one end of the third capacitor is connected with one end of the second capacitor, and the other end of the third capacitor is connected with the other end of the second capacitor;
one end of the first inductor is connected with one end of the third capacitor;
the cathode of the second diode is connected with the other end of the first inductor, and the anode of the second diode is connected with the other end of the third capacitor;
the first end of the voltage stabilizing chip is connected with the eighth end of the voltage stabilizing chip, the second end of the voltage stabilizing chip is connected with the negative electrode of the second diode, and the fourth end of the voltage stabilizing chip is grounded;
one end of the fourth capacitor is connected with the third end of the voltage stabilizing chip, and the other end of the fourth capacitor is grounded and connected with the fourth end of the voltage stabilizing chip;
one end of the second resistor is connected with the seventh end of the voltage stabilizing chip, and the other end of the second resistor is connected with the switch module;
one end of the fifth capacitor is connected with the other end of the second resistor and the sixth end of the voltage stabilizing chip, and the other end of the fifth capacitor is grounded;
one end of the third resistor is connected with the other end of the fifth capacitor, and the other end of the third resistor is connected with the fifth end of the voltage stabilizing chip;
one end of the fourth resistor is connected with the other end of the third resistor, and the other end of the fourth resistor is used for being externally connected with positive voltage of +5V;
and one end of the fifth resistor is connected with one end of the fourth resistor, and the other end of the fifth resistor is connected with the other end of the fourth resistor.
Optionally, the switch module includes:
a sixth resistor, one end of which is used for being connected with the battery pack;
the drain electrode of the first MOS tube is connected with one end of the sixth resistor, the source electrode of the first MOS tube is connected with the other end of the second resistor, and the grid electrode of the first MOS tube is connected with the other end of the sixth resistor;
a seventh resistor, one end of which is connected with the other end of the sixth resistor;
the collector of the first triode is connected with the other end of the seventh resistor, and the emitter of the first triode is grounded;
one end of the eighth resistor is connected with the base electrode of the first triode, and the other end of the eighth resistor is connected with the control module;
and one end of the ninth resistor is connected with one end of the eighth resistor, and the other end of the ninth resistor is connected with the emitter of the first triode.
Optionally, the triggering module includes:
a tenth resistor, one end of which is connected with the other end of the first resistor, and the other end of which is grounded;
an eleventh resistor, wherein one end of the eleventh resistor is connected with one end of the tenth resistor, and the other end of the eleventh resistor is connected with the control module;
and one end of the seventh capacitor is connected with the other end of the eleventh resistor, and the other end of the seventh capacitor is grounded.
Optionally, the control module includes:
the fifteenth pin of the singlechip chip is connected with one end of the eleventh resistor, and the nineteenth pin of the singlechip chip is connected with the other end of the eighth resistor;
and one end of the sixth capacitor is connected with the first pin of the singlechip chip, and the other end of the sixth capacitor is connected with the twentieth pin of the singlechip chip.
Through the technical scheme, the BMS protection board and the BMS provided by the utility model have the programmable function by adding the control module; on the other hand, due to the arrangement of the starting module and the switching module, the battery pack cannot supply power to the USB interface under the condition that the USB interface is not accessed to the USB interface, so that the static electric loss of the battery pack is reduced.
Additional features and advantages of embodiments of the utility model will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of embodiments of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain, without limitation, the embodiments of the utility model. In the drawings:
fig. 1 is a block diagram of a structure of BMS protection according to an embodiment of the present utility model;
FIG. 2 is a circuit diagram of a buck module according to one embodiment of the utility model;
FIG. 3 is a circuit diagram of a trigger module according to one embodiment of the utility model;
FIG. 4 is a circuit diagram of a switch module according to one embodiment of the utility model;
fig. 5 is a circuit diagram of a control module according to one embodiment of the utility model.
Detailed Description
The following describes the detailed implementation of the embodiments of the present utility model with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.
Fig. 1 is a block diagram illustrating a structure of a BMS (Battery Management System ) protection plate according to an embodiment of the present utility model. In fig. 1, the BMS protection plate may include a USB connection port 01, a step-down module 02, a trigger module 03, a control module 04, and a switch module 05. The USB interface 01 may be used to access a USB interface. The first end of the voltage reducing module 02 may be connected to the first end of the USB connection port 01, and the second end of the voltage reducing module 02 may be connected to the second end of the USB connection port 01. The first end of the trigger module 03 may be connected to the second end of the USB connection port 01. A first end of the control module 04 may be connected with a second end of the trigger module 03. A first end of the switching module 05 may be connected with a third end of the buck module 02, a second end of the switching module 05 may be connected with the control module 04, and the third end of the switching module 05 may be adapted to be connected to the battery pack 06.
In the BMS protection board shown in fig. 1, the control module 04 monitors the output potential of the USB connection port 01 through the triggering module 02, and in case that the output potential is monitored, activates the switching module 05, so that the battery pack 06 can supply power to the USB connection port 01 through the voltage reducing module 02. In the case where the output potential is not monitored, the switch module 05 is in the off state, and the battery pack 06 does not need to be externally supplied with power, thereby avoiding unnecessary electric loss.
In this embodiment, the circuit configuration of the step-down module 02 may be a configuration as shown in fig. 2. In fig. 2, the buck module 02 may include a first diode D1, a first resistor R1, a first capacitor C1, a second capacitor C2, a third capacitor C3, a first inductor L1, a second diode D2, a voltage regulator chip U1, a fourth capacitor C4, a second resistor R2, a fifth capacitor C5, a third resistor R3, a fourth resistor R4, and a fifth resistor R5. The cathode of the first diode D1 may be connected to the first end of the USB connection port 01. One end of the first resistor R1 may be connected to the anode of the first diode D1, and the other end of the first resistor R1 may be connected to the second end of the USB connection port 01. One end of the first capacitor C1 may be connected to one end of the first resistor R1, and the other end of the first capacitor C1 may be connected to the other end of the first resistor R1. One end of the second capacitor C2 is connected to one end of the first capacitor C1. One end of the third capacitor C3 may be connected to one end of the second capacitor C2, and the other end of the third capacitor C3 may be connected to the other end of the second capacitor C2. One end of the first inductor L1 may be connected to one end of the third capacitor C3. The cathode of the second diode D2 may be connected to the other end of the first inductor L1, and the anode of the second diode D2 may be connected to the other end of the third capacitor C3. A first terminal of the voltage regulator chip U1 (in one example, may be preferably an MC34063 chip) may be connected to an eighth terminal of the voltage regulator chip U1, a second terminal of the voltage regulator chip U1 may be connected to a negative electrode of the second diode D2, and a fourth terminal of the voltage regulator chip U1 may be grounded. One end of the fourth capacitor C4 may be connected to the third end of the voltage stabilizing chip U1, and the other end of the fourth capacitor C4 is grounded and connected to the fourth end of the voltage stabilizing chip U1. One end of the second resistor R2 may be connected to the seventh end of the voltage stabilizing chip U1, and the other end of the second resistor R2 is connected to the switch module 05. One end of the fifth capacitor C5 may be connected to the other end of the second resistor, and connected to the sixth end of the voltage stabilizing chip U1, and the other end of the fifth capacitor C5 may be grounded. One end of the third resistor R3 may be connected to the other end of the fifth capacitor C5, and the other end of the third resistor R3 may be connected to the fifth end of the voltage stabilizing chip U1. One end of the fourth resistor R4 may be connected to the other end of the third resistor R3, and the other end of the fourth resistor R4 may be used to externally connect with a positive voltage of +5v. One end of the fifth resistor R5 may be connected to one end of the fourth resistor R4, and the other end of the fifth resistor R5 may be connected to the other end of the fourth resistor R4.
In this embodiment, the structure of the switching module 05 may be as shown in fig. 3, and in fig. 3, the switching module 05 may include: a sixth resistor R6, a first MOS transistor M1, a seventh resistor R7, a first transistor Q1 (in this example, an MMBT5551 transistor may be preferable), an eighth resistor R8, and a ninth resistor R9. Wherein one end of the sixth resistor R6 may be used for connection with the battery pack 06. The drain electrode of the first MOS tube M1 can be connected with one end of the sixth resistor R6, the source electrode of the first MOS tube M1 can be connected with the other end of the second resistor R2, and the grid electrode of the first MOS tube M1 can be connected with the other end of the sixth resistor R6. One end of the seventh resistor R7 may be connected to the other end of the sixth resistor R6. The collector of the first triode Q1 may be connected to the other end of the seventh resistor R7, and the emitter of the first triode Q1 may be grounded. One end of the eighth resistor R8 may be connected to the base of the first triode Q1, and the other end of the eighth resistor R8 may be connected to the control module 04. One end of the ninth resistor R9 may be connected to one end of the eighth resistor R8, and the other end of the ninth resistor R9 may be connected to the emitter of the first transistor Q1.
In this embodiment, the triggering module 03 may include a circuit structure as shown in fig. 4. In fig. 4, the triggering module 03 may include a tenth resistor R10, an eleventh resistor R11, and a seventh capacitor C7. One end of the tenth resistor R10 may be connected to the other end of the first resistor R1, and the other end of the tenth resistor R10 may be grounded. One end of the eleventh resistor R11 may be connected to one end of the tenth resistor R10, and the other end of the eleventh resistor R11 may be connected to the control module 04. One end of the seventh capacitor C7 may be connected to the other end of the eleventh resistor R11, and the other end of the seventh capacitor C7 may be grounded.
In this embodiment, the control module 04 may include a structure as shown in fig. 5. In fig. 5, the control module 04 may include a single chip microcomputer U2 and a sixth capacitor C6. The fifteenth pin of the single chip microcomputer chip U2 can be connected with one end of the eleventh resistor R11, and the nineteenth pin of the single chip microcomputer chip U2 can be connected with the other end of the eighth resistor R8. One end of the sixth capacitor R6 can be connected with the first end of the single chip microcomputer chip U2, and the other end of the sixth capacitor C6 can be connected with the twentieth pin of the single chip microcomputer chip U2.
On the other hand, the present utility model also provides a BMS, which may include a BMS body and a BMS protection plate. Wherein, BMS body can include the USB connector for insert the USB interface. And the BMS protection plate includes a step-down module 02, a trigger module 03, a control module 04, and a switching module 05. The first end of the voltage reducing module 02 may be connected to the first end of the USB connection port 01, and the second end of the voltage reducing module 02 may be connected to the second end of the USB connection port 01. The first end of the trigger module 03 may be connected to the second end of the USB connection port 01. A first end of the control module 04 may be connected with a second end of the trigger module 03. A first end of the switching module 05 may be connected with a third end of the buck module 02, a second end of the switching module 05 may be connected with the control module 04, and the third end of the switching module 05 may be adapted to be connected to the battery pack 06.
In this BMS, the control module 04 monitors the output potential of the USB connection port 01 through the triggering module 02, and in case the output potential is monitored, activates the switching module 05, so that the battery pack 06 can supply power to the USB connection port 01 through the voltage reducing module 02. In the case where the output potential is not monitored, the switch module 05 is in the off state, and the battery pack 06 does not need to be externally supplied with power, thereby avoiding unnecessary electric loss.
In this embodiment, the circuit configuration of the step-down module 02 may be a configuration as shown in fig. 2. In fig. 2, the buck module 02 may include a first diode D1, a first resistor R1, a first capacitor C1, a second capacitor C2, a third capacitor C3, a first inductor L1, a second diode D2, a voltage regulator chip U1, a fourth capacitor C4, a second resistor R2, a fifth capacitor C5, a third resistor R3, a fourth resistor R4, and a fifth resistor R5. The cathode of the first diode D1 may be connected to the first end of the USB connection port 01. One end of the first resistor R1 may be connected to the anode of the first diode D1, and the other end of the first resistor R1 may be connected to the second end of the USB connection port 01. One end of the first capacitor C1 may be connected to one end of the first resistor R1, and the other end of the first capacitor C1 may be connected to the other end of the first resistor R1. One end of the second capacitor C2 is connected to one end of the first capacitor C1. One end of the third capacitor C3 may be connected to one end of the second capacitor C2, and the other end of the third capacitor C3 may be connected to the other end of the second capacitor C2. One end of the first inductor L1 may be connected to one end of the third capacitor C3. The cathode of the second diode D2 may be connected to the other end of the first inductor L1, and the anode of the second diode D2 may be connected to the other end of the third capacitor C3. The first end of the voltage stabilizing chip U1 can be connected with the eighth end of the voltage stabilizing chip U1, the second end of the voltage stabilizing chip U1 can be connected with the cathode of the second diode D2, and the fourth end of the voltage stabilizing chip U1 can be grounded. One end of the fourth capacitor C4 may be connected to the third end of the voltage stabilizing chip U1, and the other end of the fourth capacitor C4 is grounded and connected to the fourth end of the voltage stabilizing chip U1. One end of the second resistor R2 may be connected to the seventh end of the voltage stabilizing chip U1, and the other end of the second resistor R2 is connected to the switch module 05. One end of the fifth capacitor C5 may be connected to the other end of the second resistor, and connected to the sixth end of the voltage stabilizing chip U1, and the other end of the fifth capacitor C5 may be grounded. One end of the third resistor R3 may be connected to the other end of the fifth capacitor C5, and the other end of the third resistor R3 may be connected to the fifth end of the voltage stabilizing chip U1. One end of the fourth resistor R4 may be connected to the other end of the third resistor R3, and the other end of the fourth resistor R4 may be used to externally connect with a positive voltage of +5v. One end of the fifth resistor R5 may be connected to one end of the fourth resistor R4, and the other end of the fifth resistor R5 may be connected to the other end of the fourth resistor R4.
In this embodiment, the structure of the switching module 05 may be as shown in fig. 3, and in fig. 3, the switching module 05 may include: the transistor comprises a sixth resistor R6, a first MOS tube M1, a seventh resistor R7, a first triode Q1, an eighth resistor R8 and a ninth resistor R9. Wherein one end of the sixth resistor R6 may be used for connection with the battery pack 06. The drain electrode of the first MOS tube M1 can be connected with one end of the sixth resistor R6, the source electrode of the first MOS tube M1 can be connected with the other end of the second resistor R2, and the grid electrode of the first MOS tube M1 can be connected with the other end of the sixth resistor R6. One end of the seventh resistor R7 may be connected to the other end of the sixth resistor R6. The collector of the first triode Q1 may be connected to the other end of the seventh resistor R7, and the emitter of the first triode Q1 may be grounded. One end of the eighth resistor R8 may be connected to the base of the first triode Q1, and the other end of the eighth resistor R8 may be connected to the control module 04. One end of the ninth resistor R9 may be connected to one end of the eighth resistor R8, and the other end of the ninth resistor R9 may be connected to the emitter of the first transistor Q1.
In this embodiment, the triggering module 03 may include a circuit structure as shown in fig. 4. In fig. 4, the triggering module 03 may include a tenth resistor R10, an eleventh resistor R11, and a seventh capacitor C7. One end of the tenth resistor R10 may be connected to the other end of the first resistor R1, and the other end of the tenth resistor R10 may be grounded. One end of the eleventh resistor R11 may be connected to one end of the tenth resistor R10, and the other end of the eleventh resistor R11 may be connected to the control module 04. One end of the seventh capacitor C7 may be connected to the other end of the eleventh resistor R11, and the other end of the seventh capacitor C7 may be grounded.
In this embodiment, the control module 04 may include a structure as shown in fig. 5. In fig. 5, the control module 04 may include a single chip microcomputer U2 and a sixth capacitor C6. The fifteenth pin of the single chip microcomputer chip U2 can be connected with one end of the eleventh resistor R11, and the nineteenth pin of the single chip microcomputer chip U2 can be connected with the other end of the eighth resistor R8. One end of the sixth capacitor R6 can be connected with the first end of the single chip microcomputer chip U2, and the other end of the sixth capacitor C6 can be connected with the twentieth pin of the single chip microcomputer chip U2.
Through the technical scheme, the BMS protection board and the BMS provided by the utility model have the programmable function by adding the control module; on the other hand, due to the trigger module and the switch module, the battery pack cannot supply power to the USB interface under the condition that the USB interface is not accessed to the USB interface, so that the static electric loss of the battery pack is reduced.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises an element.
The foregoing is merely exemplary of the present utility model and is not intended to limit the present utility model. Various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are to be included in the scope of the claims of the present utility model.
Claims (4)
1. A BMS protection plate, comprising:
the USB interface is used for accessing the USB interface;
the first end of the voltage reducing module is connected with the first end of the USB connector, and the second end of the voltage reducing module is connected with the second end of the USB connector;
the first end of the triggering module is connected with the second end of the USB connector;
the first end of the control module is connected with the second end of the trigger module;
the first end of the switch module is connected with the third end of the voltage reduction module, the second end of the switch module is connected with the control module, and the third end of the switch module is used for being connected to a battery pack;
the buck module includes:
the negative electrode of the first diode is connected with the first end of the USB connector;
one end of the first resistor is connected with the positive electrode of the first diode, and the other end of the first resistor is connected with the second end of the USB connector;
one end of the first capacitor is connected with one end of the first resistor, and the other end of the first capacitor is connected with the other end of the first resistor;
one end of the second capacitor is connected with one end of the first capacitor;
one end of the third capacitor is connected with one end of the second capacitor, and the other end of the third capacitor is connected with the other end of the second capacitor;
one end of the first inductor is connected with one end of the third capacitor;
the cathode of the second diode is connected with the other end of the first inductor, and the anode of the second diode is connected with the other end of the third capacitor;
the first end of the voltage stabilizing chip is connected with the eighth end of the voltage stabilizing chip, the second end of the voltage stabilizing chip is connected with the negative electrode of the second diode, and the fourth end of the voltage stabilizing chip is grounded;
one end of the fourth capacitor is connected with the third end of the voltage stabilizing chip, and the other end of the fourth capacitor is grounded and connected with the fourth end of the voltage stabilizing chip;
one end of the second resistor is connected with the seventh end of the voltage stabilizing chip, and the other end of the second resistor is connected with the switch module;
one end of the fifth capacitor is connected with the other end of the second resistor and the sixth end of the voltage stabilizing chip, and the other end of the fifth capacitor is grounded;
one end of the third resistor is connected with the other end of the fifth capacitor, and the other end of the third resistor is connected with the fifth end of the voltage stabilizing chip;
one end of the fourth resistor is connected with the other end of the third resistor, and the other end of the fourth resistor is used for being externally connected with positive voltage of +5V;
and one end of the fifth resistor is connected with one end of the fourth resistor, and the other end of the fifth resistor is connected with the other end of the fourth resistor.
2. The BMS protection plate according to claim 1, wherein said switching module comprises:
a sixth resistor, one end of which is used for being connected with the battery pack;
the drain electrode of the first MOS tube is connected with one end of the sixth resistor, the source electrode of the first MOS tube is connected with the other end of the second resistor, and the grid electrode of the first MOS tube is connected with the other end of the sixth resistor;
a seventh resistor, one end of which is connected with the other end of the sixth resistor;
the collector of the first triode is connected with the other end of the seventh resistor, and the emitter of the first triode is grounded;
one end of the eighth resistor is connected with the base electrode of the first triode, and the other end of the eighth resistor is connected with the control module;
and one end of the ninth resistor is connected with one end of the eighth resistor, and the other end of the ninth resistor is connected with the emitter of the first triode.
3. The BMS protection plate according to claim 2, wherein said triggering module comprises:
a tenth resistor, one end of which is connected with the other end of the first resistor, and the other end of which is grounded;
an eleventh resistor, wherein one end of the eleventh resistor is connected with one end of the tenth resistor, and the other end of the eleventh resistor is connected with the control module;
and one end of the seventh capacitor is connected with the other end of the eleventh resistor, and the other end of the seventh capacitor is grounded.
4. The BMS protection plate according to claim 3, wherein said control module comprises:
the fifteenth pin of the singlechip chip is connected with one end of the eleventh resistor, and the nineteenth pin of the singlechip chip is connected with the other end of the eighth resistor;
and one end of the sixth capacitor is connected with the first pin of the singlechip chip, and the other end of the sixth capacitor is connected with the twentieth pin of the singlechip chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320615428.1U CN220022322U (en) | 2023-03-23 | 2023-03-23 | BMS protection board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320615428.1U CN220022322U (en) | 2023-03-23 | 2023-03-23 | BMS protection board |
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| Publication Number | Publication Date |
|---|---|
| CN220022322U true CN220022322U (en) | 2023-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320615428.1U Active CN220022322U (en) | 2023-03-23 | 2023-03-23 | BMS protection board |
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| Country | Link |
|---|---|
| CN (1) | CN220022322U (en) |
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- 2023-03-23 CN CN202320615428.1U patent/CN220022322U/en active Active
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