CN218343313U - Battery protection device and vehicle - Google Patents
Battery protection device and vehicle Download PDFInfo
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- CN218343313U CN218343313U CN202222622091.5U CN202222622091U CN218343313U CN 218343313 U CN218343313 U CN 218343313U CN 202222622091 U CN202222622091 U CN 202222622091U CN 218343313 U CN218343313 U CN 218343313U
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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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Abstract
The embodiment of the utility model discloses battery protection device and vehicle. The battery protection device includes: a sensor module. And the sensor information input end of the signal processing module is connected with the output end of the sensor module. And the controlled end of the charge-discharge switch module is connected with the charge-discharge control end of the signal processing module. And the internal communication end of the control module is connected with the control connecting end of the signal processing module, and the battery state reporting end of the control module is connected with an external controller through a wire harness. The embodiment of the utility model provides a simple structure, consequently the volume is less, is fit for installing in small-size electric vehicle. And a wire is used for communication, so that high cost caused by CAN communication is avoided. Meanwhile, because the traditional battery management system uses CAN communication for bidirectional transmission, the anti-interference performance is poor. And the embodiment of the present invention provides a wire communication using unidirectional transmission. Interference immunity in communications is improved.
Description
Technical Field
The embodiment of the utility model provides a relate to battery protection technology, especially relate to a battery protection device and vehicle.
Background
With the increase of environmental awareness of people, consumers increasingly favor electric vehicles using clean energy. Some small electric vehicles have become a major choice.
As an electric vehicle, a battery management system is needed to manage a battery, and the existing battery management system is complex and generally has the problems of large volume, high manufacturing cost and poor anti-interference performance. And is not suitable for small electric vehicles.
SUMMERY OF THE UTILITY MODEL
The utility model provides a battery protection device and vehicle to reduce battery management system's volume, reduce battery management system's cost, improve the interference immunity that reduces battery management system.
In a first aspect, an embodiment of the present invention provides a battery protection device, including:
the sensor module is connected with the battery pack and used for acquiring real-time parameters of the battery pack;
the sensor information input end of the signal processing module is connected with the output end of the sensor module;
the charging and discharging switch module is connected in series in a charging and discharging loop of the battery pack, and a controlled end of the charging and discharging switch module is connected with a charging and discharging control end of the signal processing module;
and the internal communication end of the control module is connected with the control connecting end of the signal processing module, and the battery state reporting end of the control module is connected with an external controller through a wire harness.
Optionally, the upper computer communication end of the control module is connected with an upper computer.
Optionally, the upper computer communication end of the control module is connected with the upper computer through a serial bus.
Optionally, the charge-discharge detection end of the control module is connected to the charge-discharge interface.
Optionally, the charge and discharge switch module includes a charge switch and a discharge switch, the charge switch and the discharge switch are connected in series in the charge and discharge loop of the battery pack, and the controlled end of the charge switch and the controlled end of the discharge switch are connected to the charge and discharge control end of the signal processing module.
Optionally, the battery pack further comprises a balancing module, wherein the balancing module is connected to the battery cell of the battery pack and is used for discharging a part of the battery cell.
Optionally, the sensor module includes a voltage sensor, and the voltage sensor is used for acquiring the voltage of the battery pack.
Optionally, the sensor module includes a temperature sensor, and the temperature sensor is used for acquiring the temperature of the battery pack.
Optionally, the battery pack further comprises a fusing module, a first end of the fusing module is connected with the positive end of the battery pack, and a second end of the fusing module is connected with the positive end of the charge-discharge interface.
In a second aspect, the embodiment of the present invention further provides a vehicle, which is characterized by comprising any one of the above battery protection devices.
The embodiment of the utility model provides an in battery protection device includes: and the sensor module is connected with the battery pack and used for acquiring real-time parameters of the battery pack. And the sensor information input end of the signal processing module is connected with the output end of the sensor module. And the charge and discharge switch module is connected in series in a charge and discharge loop of the battery pack, and the controlled end of the charge and discharge switch module is connected with the charge and discharge control end of the signal processing module. And the internal communication end of the control module is connected with the control connecting end of the signal processing module, and the battery state reporting end of the control module is connected with an external controller through a wire-through. The embodiment of the utility model provides a simple structure, consequently the volume is less, is fit for installing in small-size electric vehicle. And a wire is used for communication, so that the high cost caused by CAN communication used by the traditional battery management system is avoided. Meanwhile, because the traditional battery management system uses CAN communication for bidirectional transmission, the anti-interference performance is poor. And the embodiment of the present invention provides a wire communication using unidirectional transmission. Interference immunity in communications is improved.
Drawings
Fig. 1 is a schematic structural diagram of a battery protection device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some of the structures associated with the present invention are shown in the drawings, not all of them.
Fig. 1 is a schematic structural diagram of a battery protection device according to an embodiment of the present invention, and refer to fig. 1. An embodiment of the utility model provides a battery protection device, include:
a sensor module (not shown in the figure) connected to the battery pack 1 for acquiring real-time parameters of the battery pack 1;
the sensor information input end of the signal processing module 2 is connected with the output end of the sensor module;
the charging and discharging switch module 3 is connected in series in a charging and discharging loop of the battery pack, and a controlled end of the charging and discharging switch module 3 is connected with a charging and discharging control end of the signal processing module 2;
and an internal communication end of the control module 4 is connected with the control connection end of the signal processing module 2, and a battery state reporting end of the control module 4 is connected with an external controller through a wire harness.
Wherein, the sensor module can be arranged in the package of the battery pack 1 or beside the battery pack 1. The sensor module can acquire the real-time parameters of the battery pack 1, convert the real-time parameters through the signal processing module 2, and send the converted real-time parameters to the control module 4. Since there is a difference between the output signal of the sensor module and the input signal that can be received by the control module 4, the signal of the sensor module can be converted by the signal processing module 2 and transmitted to the control module 4. For example, the signal conversion performed by the signal processing module 2 may be converting a current signal output by the sensor module into a voltage signal that can be recognized by the control module 4. The sensor module can comprise any kind of sensor or acquisition circuit, and the type of the sensor module can be determined according to actual needs. Alternatively, the sensor module may include a voltage sensor for acquiring the voltage of the battery pack 1. The signal processing module 2 converts the signal output by the voltage sensor and transmits the measured voltage to the control unit. Optionally, the sensor module includes a temperature sensor for acquiring the temperature of the battery pack 1. The signal processing module 2 converts the signal output by the temperature sensor and transmits the measured temperature to the control unit. The control module 4 is used for determining the current battery pack state according to the information uploaded by the internal communication terminal and reporting the battery pack state to the external controller, so that the external controller can master the battery pack state in real time. The control module 4 may comprise a single-chip microcomputer or a microcontroller. The signal processing module 2 can drive the charge and discharge switch module 3 to be switched on or switched off according to the control instruction of the control module 4. When the charging and discharging switch module 3 is switched on, the charging and discharging circuit of the battery pack is switched on, and the battery pack 1 can be charged or discharged. When the charging and discharging switch module 3 is turned off, the charging and discharging circuit of the battery pack is disconnected, and the battery pack 1 cannot be charged or discharged. Charge and discharge switch module 3 can include switching device, charge and discharge switch module 3 can be under the drive of signal processing module 2 switch on with turn-off can, the embodiment of the utility model provides a do not prescribe a limit to charge and discharge switch module 3's specific structure. Optionally, the charge and discharge switch module 3 includes a charge switch and a discharge switch, both the charge switch and the discharge switch are connected in series in the charge and discharge loop of the battery pack, and the controlled end of the charge switch and the controlled end of the discharge switch are both connected to the charge and discharge control end of the signal processing module 2. The charging switch and the discharging switch can be MOS tubes or relays. The MOS tube has small volume and low power consumption. Therefore, the MOS tube is used as a charging switch and a discharging switch, the size of the battery protection device can be further reduced, and the power consumption is reduced. The charge and discharge loop of the battery pack can comprise a positive end P +/C + of a charge and discharge interface, a battery pack 1, a charge and discharge switch module 3 and a negative end P-/C-of the charge and discharge interface. The components or the modules are sequentially connected in series to form a charge-discharge loop of the battery pack.
Optionally, the upper computer communication end of the control module 4 is connected with an upper computer.
Through the communication end of the upper computer, the control module 4 can report the battery state acquired by the control module 4 and upload the battery state to the upper computer. The specific type of the upper computer can be determined according to actual needs.
Optionally, the upper computer communication end of the control module 4 is connected to the upper computer through a serial bus.
The upper computer communication end of the control module 4 may be a serial interface, and is in communication connection with the upper computer through the serial interface.
Optionally, the charge-discharge detection end of the control module 4 is connected to the charge-discharge interface.
When the external charger is connected with the charge-discharge interface, the charge-discharge interface is at a high level. The control module 4 controls the charging and discharging switch module 3 to be conducted according to the high level signal of the charging and discharging detection end. Ready for charging the battery 1.
Optionally, the battery pack further comprises a balancing module, and the balancing module is connected to the battery cells of the battery pack 1 and is used for discharging partial battery cells.
In the charging process, each cell state of the battery pack 1 is different, and in order to balance the cell states, when the voltage of a certain single cell reaches a preset value, the balance resistor connected with the single cell in the balance module is connected, so that the purpose of reducing the state difference between the single cells is achieved.
Optionally, the battery pack further comprises a fusing module 5, a first end of the fusing module 5 is connected to the positive end of the battery pack 1, and a second end of the fusing module 5 is connected to the positive end P +/C + of the charge-discharge interface.
In order to avoid excessive current flowing through the battery pack 1 in an extreme state, damage to the battery pack 1 and even fire. The embodiment of the utility model provides a set up fusing module 5 at the positive terminal of group battery 1. The fusing module 5 may be fused when the current flowing through itself exceeds the rating of the fusing module 5, thereby disconnecting the battery pack 1 from the outside.
Hereinafter, an operation of the battery protection apparatus will be described as an example.
In the charging process of the battery protection device, a constant current-constant voltage (CC-CV) charging mode can be adopted, namely, the battery pack 1 is charged at constant current, and when the voltage of the battery pack reaches a preset voltage value, the charging mode is changed into constant current charging. The voltage preset value can be determined according to actual needs. The charge switch is default to the on state. The charging and discharging interface can also be connected with a controlled end of the discharging switch, after the external charger is connected, the external charger outputs small current to activate the discharging switch, and then enters a normal charging mode. Meanwhile, the low current output by the external charger realizes the slow boosting and slow current increase of the internal element of the battery protection device, realizes the pre-charging function and avoids the element damage caused by high current impact. Along with the continuous charging process, the voltage of the single battery cell gradually rises, the equalizing circuit is opened when the voltage of the single battery cell reaches a certain value, and the high-voltage monomer is closed in an equalizing mode when the voltage of the high-voltage monomer is reduced to a certain voltage value, so that the consistency among the monomer voltages is kept to the maximum extent.
In the discharging process of the battery protection device, the discharging switch is in a closed state by default, the control module 4 sends a switch awakening control instruction according to a signal of the upper computer or the charging and discharging interface, the signal processing module 2 drives the discharging switch to be conducted according to the control instruction, then the control module 4 carries out self-checking, and if the self-checking is failure-free, the battery protection device enters a normal discharging state. The self-test faults can comprise undervoltage of the battery pack, abnormal temperature of the battery pack and the like.
The embodiment of the utility model provides a vehicle is still provided, including above-mentioned arbitrary battery protection device.
The vehicle uses any one of the battery protection devices, so that the vehicle has the corresponding beneficial effects with the battery protection device.
It should be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles applied thereto. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. A battery protection device, comprising:
the sensor module is connected with the battery pack and used for acquiring real-time parameters of the battery pack;
the sensor information input end of the signal processing module is connected with the output end of the sensor module;
the charging and discharging switch module is connected in series in a charging and discharging loop of the battery pack, and a controlled end of the charging and discharging switch module is connected with a charging and discharging control end of the signal processing module;
and the internal communication end of the control module is connected with the control connecting end of the signal processing module, and the battery state reporting end of the control module is connected with an external controller through a wire harness.
2. The battery protection device of claim 1, wherein the upper computer communication end of the control module is connected to an upper computer.
3. The battery protection device of claim 2, wherein the upper computer communication end of the control module is connected with the upper computer through a serial bus.
4. The battery protection device of claim 1, wherein the charge and discharge detection end of the control module is connected to a charge and discharge interface.
5. The battery protection device according to claim 1, wherein the charge and discharge switch module includes a charge switch and a discharge switch, the charge switch and the discharge switch are both connected in series in a charge and discharge loop of the battery pack, and a controlled end of the charge switch and a controlled end of the discharge switch are both connected to a charge and discharge control end of the signal processing module.
6. The battery protection device of claim 1, further comprising an equalization module connected to the cells of the battery pack for discharging a portion of the cells.
7. The battery protection device of claim 1, wherein the sensor module comprises a voltage sensor for obtaining a voltage of the battery pack.
8. The battery protection device of claim 1, wherein the sensor module comprises a temperature sensor for acquiring a temperature of the battery pack.
9. The battery protection device according to claim 1, further comprising a fusing module, wherein a first end of the fusing module is connected to the positive terminal of the battery pack, and a second end of the fusing module is connected to the positive terminal of the charge-discharge interface.
10. A vehicle characterized by comprising the battery protection apparatus according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222622091.5U CN218343313U (en) | 2022-09-30 | 2022-09-30 | Battery protection device and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222622091.5U CN218343313U (en) | 2022-09-30 | 2022-09-30 | Battery protection device and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218343313U true CN218343313U (en) | 2023-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222622091.5U Active CN218343313U (en) | 2022-09-30 | 2022-09-30 | Battery protection device and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218343313U (en) |
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2022
- 2022-09-30 CN CN202222622091.5U patent/CN218343313U/en active Active
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