CN215580473U - High-voltage battery system - Google Patents
High-voltage battery system Download PDFInfo
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- CN215580473U CN215580473U CN202122054178.2U CN202122054178U CN215580473U CN 215580473 U CN215580473 U CN 215580473U CN 202122054178 U CN202122054178 U CN 202122054178U CN 215580473 U CN215580473 U CN 215580473U
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Abstract
The utility model relates to a high-voltage battery system, which comprises an energy storage battery pack, a microprocessor, a self-locking circuit module, a power supply module and a manual switch, wherein an MOS (metal oxide semiconductor) tube is used as a switching device; the microprocessor is respectively connected with the energy storage battery pack, the power supply module and the self-locking circuit module, and the power supply module and the self-locking circuit module are connected with the manual switch. The utility model adds the self-locking circuit, solves the problem that the MOS tube switching circuit can not be applied to a high-voltage system, reduces the cost of the whole system and simultaneously has no reduction of functions.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a high-voltage battery system.
Background
Household products in the photovoltaic industry are continuously updated, corresponding energy storage battery packs are also continuously updated, safety is the important factor of the battery packs, each battery pack has at least two stages of hardware protection, the main circuit of the battery pack is cut off without protecting the battery pack, the battery pack stops discharging or charging, and two switching circuits are available at present; relay contactor switch and MOS pipe switch.
The relay switch is more stable and safe, has high voltage, can cut off a higher voltage system, and has the defects of high cost, high internal resistance and aging risk of a contact
The MOS tube switch has low cost and low internal resistance, and the switching frequency of the MOS tube switch is far higher than that of a relay only by being used as the switch; the MOS tube generates heat, a heat dissipation means is needed, and meanwhile, the MOS tube has low internal resistance corresponding to the common voltage of about 100V and cannot meet the switching requirement of a high-voltage system. Therefore, it is necessary to design a high-voltage battery system to protect the safety of the energy storage battery pack.
SUMMERY OF THE UTILITY MODEL
Therefore, the technical problem to be solved by the utility model is to overcome the defect that the MOS tube can be normally turned on but cannot be normally turned off in a high-voltage system in the prior art.
In order to solve the technical problem, the utility model provides a high-voltage battery system which is characterized by comprising an energy storage battery pack, a microprocessor, a self-locking circuit module, a power supply module and a manual switch, wherein an MOS (metal oxide semiconductor) tube is used as a switching device;
the microprocessor is respectively connected with the energy storage battery pack, the power supply module and the self-locking circuit module, and the power supply module and the self-locking circuit module are connected with the manual switch.
In one embodiment of the utility model, the energy storage battery pack is formed by connecting a plurality of battery packs in series.
In one embodiment of the utility model, the energy storage battery pack comprises: BMS main control unit.
In one embodiment of the utility model, the energy storage battery pack comprises: a current collection system and a cooling system.
In one embodiment of the utility model, the microprocessor is STM 32.
In one embodiment of the utility model, the switching device of the self-locking circuit module is connected in parallel with the manual switch.
In an embodiment of the present invention, the switching device of the self-locking circuit module is a MOS transistor.
In one embodiment of the present invention, the switch device of the self-locking circuit module is a relay.
In one embodiment of the utility model, pin 4 of the relay is connected with terminal 1 of the manual switch, and pin 13 of the relay is connected with terminal 2 of the manual switch.
In one embodiment of the present invention, the self-locking circuit module includes: the circuit comprises a manual switch CN1, a relay RY1, a diode D1, a triode Q11, a capacitor C3, a resistor R23 and a resistor R25;
wherein, the 1 end of the manual switch CN1 is connected with the pin 4 of the relay RY1, the 2 end of the manual switch CN1 is connected with the pin 13 of the relay RY1, and the pin 8 and the pin 9 of the relay RY1 are connected;
the diode D1 is connected in parallel with the relay RY1, the anode of the diode D1 is connected with the pin 1 of the relay RY1, the cathode of the diode D1 is connected with the pin 16 of the relay RY1, and the pin 16 of the relay RY1 is connected with the voltage of +5 v;
the collector of the triode Q11 is connected with the anode of the diode D1, the base of the triode Q11 is connected with the 2 end of the capacitor C3, the 1 end of the capacitor C3 is grounded, the resistor R25 is connected in parallel at the two ends of the capacitor C3, the 2 end of the resistor R23 is connected with the 2 end of the capacitor C3, the 1 end of the resistor R23 is connected with the microprocessor, and the emitter of the triode Q11 is grounded.
Compared with the prior art, the technical scheme of the utility model has the following advantages:
the high-voltage battery system provided by the utility model has the advantages that the MOS tube switching circuit with relatively low use cost is applied to the high-voltage system, the cost of the whole system is reduced, and the functions of the whole system are not reduced. Meanwhile, the self-locking circuit is additionally arranged on the original manual switch, so that when the self-locking circuit works, the high-voltage battery system cannot be turned off by using the manual switch, and the power supply of the high-voltage battery system can only be turned off by using the manual switch in a no-current state, the problem that the MOS tube switching circuit can be normally turned on but cannot be normally turned off in the high-voltage system is solved, and the problems that the energy storage battery pack is mistakenly operated to switch and the service life of the switch is short in the charging and discharging process are solved.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the present disclosure taken in conjunction with the accompanying drawings, in which:
fig. 1 is a structural view of a high voltage battery system according to the present invention;
fig. 2 is a self-locking circuit diagram of the present invention.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
Referring to fig. 1, a high voltage battery system includes an energy storage battery pack using an MOS transistor as a switching device, a microprocessor, a self-locking circuit module, a power supply module, and a manual switch; the microprocessor is respectively connected with the energy storage battery pack, the power supply module and the self-locking circuit module, and the power supply module and the self-locking circuit module are connected with the manual switch.
The energy storage battery pack is formed by connecting a plurality of battery packs in series and comprises a BMS main control unit, a current acquisition system and a cooling system. The BMS main control unit is a main control unit after the battery packs are connected in series to control output, so that the situation that the system cannot be closed due to self-locking and locking of the battery packs is prevented, and the safety of the system is improved; the current acquisition system realizes current detection, insulation detection and voltage detection of each high-voltage point; the cooling system comprises a cooling plate and a cooling pipeline, so that the battery pack can be rapidly cooled conveniently, and the problem of scrapping or burning caused by short circuit of the battery is avoided.
The microprocessor is STM 32.
And the switch device of the self-locking circuit module is a relay or an MOS tube. And the self-locking logic of the self-locking circuit module is self-locking after the system is started, and self-locking is closed 30 seconds after no current exists.
In the system provided by the embodiment, the self-locking circuit is added on the manual switch, so that the external switch cannot turn off the power supply of the high-voltage battery system, and the power supply of the high-voltage battery system can be turned off only in a no-current state; the problem of MOS pipe because the voltage is not enough, can normally open but can't normally turn off in high-voltage system is solved, also solved simultaneously when forcing to cut off the power, MOS pipe is because of being in the on-state, leads to internal resistance grow, and it is serious to generate heat, and the continuous work consequence is serious problem.
Based on the above embodiments, the present embodiment further describes a switching device using a relay as a self-locking circuit module, and as shown in fig. 2, the self-locking circuit module includes: the circuit comprises a manual switch CN1, a relay RY1, a diode D1, a triode Q11, a capacitor C3, a resistor R23 and a resistor R25;
wherein, the 1 end of the manual switch CN1 is connected with the pin 4 of the relay RY1, the 2 end of the manual switch CN1 is connected with the pin 13 of the relay RY1, and the pin 8 and the pin 9 of the relay RY1 are connected;
the diode D1 is connected in parallel with the relay RY1, the anode of the diode D1 is connected with the pin 1 of the relay RY1, the cathode of the diode D1 is connected with the pin 16 of the relay RY1, and the pin 16 of the relay RY1 is connected with the voltage of +5 v;
the collector of the triode Q11 is connected with the anode of the diode D1, the base of the triode Q11 is connected with the 2 end of the capacitor C3, the 1 end of the capacitor C3 is grounded, the resistor R25 is connected in parallel at the two ends of the capacitor C3, the 2 end of the resistor R23 is connected with the 2 end of the capacitor C3, the 1 end of the resistor R23 is connected with the microprocessor, and the emitter of the triode Q11 is grounded.
The high-voltage battery system works in the way that after the switch is turned on, the high-voltage battery system starts to work, the MOS tube is turned on, the battery pack can be normally charged and discharged for use, meanwhile, the self-locking circuit is turned on, the single chip microcomputer starts to work and provides a relay driving signal switch, the relay is closed, the switch is short-circuited at the moment and cannot cut off a power supply, and when no current exists, the single chip microcomputer turns off the relay driving signal, and the switch can be normally operated at the moment.
According to the system provided by the embodiment, the MOS tube switching circuit with relatively low use cost is applied to a high-voltage battery system, so that the cost of the whole system is reduced, but the functions of the whole system are not reduced; meanwhile, the added self-locking circuit ensures that the external switch can not turn off the system power supply after the high-voltage battery works normally, the MOS tube works normally all the time, the system power supply can be turned off only in a no-current state, and the MOS tube can be turned off normally at the moment; the problem of MOS pipe switch circuit can normally open but unable normal turn-off in high-voltage system is solved, the problem of energy storage battery package in charge-discharge process maloperation switch and switch life-span weak has been avoided simultaneously.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.
Claims (10)
1. A high-voltage battery system is characterized by comprising an energy storage battery pack, a microprocessor, a self-locking circuit module, a power supply module and a manual switch, wherein an MOS (metal oxide semiconductor) tube is used as a switching device;
the microprocessor is respectively connected with the energy storage battery pack, the power supply module and the self-locking circuit module, and the power supply module and the self-locking circuit module are connected with the manual switch.
2. The system of claim 1, wherein the energy storage battery pack is formed by connecting a plurality of battery packs in series.
3. The system of claim 1, wherein the energy storage battery pack comprises: BMS main control unit.
4. The system of claim 1, wherein the energy storage battery pack comprises: a current collection system and a cooling system.
5. The system of claim 1, wherein the microprocessor is STM 32.
6. The system of claim 1, wherein the switching device of the self-locking circuit module is connected in parallel with the manual switch.
7. The system of claim 6, wherein the switching device of the self-locking circuit module is a MOS transistor.
8. The system of claim 6, wherein the switching device of the latching circuit module is a relay.
9. The system of claim 8, wherein pin 4 of the relay is connected to terminal 1 of the manual switch, and pin 13 of the relay is connected to terminal 2 of the manual switch.
10. The system of claim 1, wherein the self-locking circuit module comprises:
the circuit comprises a manual switch CN1, a relay RY1, a diode D1, a triode Q11, a capacitor C3, a resistor R23 and a resistor R25;
wherein, the 1 end of the manual switch CN1 is connected with the pin 4 of the relay RY1, the 2 end of the manual switch CN1 is connected with the pin 13 of the relay RY1, and the pin 8 and the pin 9 of the relay RY1 are connected;
the diode D1 is connected in parallel with the relay RY1, the anode of the diode D1 is connected with the pin 1 of the relay RY1, the cathode of the diode D1 is connected with the pin 16 of the relay RY1, and the pin 16 of the relay RY1 is connected with the voltage of +5 v;
the collector of the triode Q11 is connected with the anode of the diode D1, the base of the triode Q11 is connected with the 2 end of the capacitor C3, the 1 end of the capacitor C3 is grounded, the resistor R25 is connected in parallel at the two ends of the capacitor C3, the 2 end of the resistor R23 is connected with the 2 end of the capacitor C3, the 1 end of the resistor R23 is connected with the microprocessor, and the emitter of the triode Q11 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122054178.2U CN215580473U (en) | 2021-08-27 | 2021-08-27 | High-voltage battery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122054178.2U CN215580473U (en) | 2021-08-27 | 2021-08-27 | High-voltage battery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215580473U true CN215580473U (en) | 2022-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122054178.2U Active CN215580473U (en) | 2021-08-27 | 2021-08-27 | High-voltage battery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215580473U (en) |
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2021
- 2021-08-27 CN CN202122054178.2U patent/CN215580473U/en active Active
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