CN215869565U - Thermal management power supply system of power battery and vehicle - Google Patents
Thermal management power supply system of power battery and vehicle Download PDFInfo
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- CN215869565U CN215869565U CN202122238307.3U CN202122238307U CN215869565U CN 215869565 U CN215869565 U CN 215869565U CN 202122238307 U CN202122238307 U CN 202122238307U CN 215869565 U CN215869565 U CN 215869565U
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a thermal management power supply system of a power battery and a vehicle, wherein the thermal management power supply system comprises external power supply equipment, a battery heating assembly, a temperature sensor, a direct current converter, a vehicle-mounted low-voltage electric appliance, a battery manager and a vehicle controller; the battery heating assembly is arranged on the power battery and is electrically connected with the external power supply equipment, and the battery heating assembly and the external power supply equipment form a battery heating loop; the temperature sensor is arranged on the power battery; the direct current converter is electrically connected with external power supply equipment; the vehicle-mounted low-voltage electric appliance is electrically connected with the direct current converter, and the vehicle-mounted low-voltage electric appliance, the direct current converter and the external power supply equipment form a whole vehicle self-regulation loop; the battery manager is electrically connected with the temperature sensor; and the vehicle control unit is electrically connected with the battery manager and the direct current converter respectively. The utility model can efficiently and safely heat the power battery.
Description
Technical Field
The utility model relates to the technical field of power battery heating, in particular to a thermal management power supply system of a power battery and a vehicle.
Background
At present, a lithium battery is adopted by a new energy automobile as a power battery, and the lithium battery has the characteristic that the available capacity of the battery is reduced and the discharging capacity is weakened in a low-temperature environment. In order to solve the problems caused by the characteristics of the lithium battery, a battery heating assembly is installed on a power battery at present, and the power battery cannot supply power to the battery heating assembly, so that the electric quantity of the power battery is consumed, and the available capacity of the power battery is reduced probably due to low temperature, so that sufficient electric energy cannot be provided for the battery heating assembly. Therefore, external power supply equipment is usually adopted to provide electric energy for the battery heating assembly, but when a user heats the power battery, the heating time for heating the power battery is difficult to control, if the heating time is too short, the power battery cannot be effectively heated to a proper temperature, and if the heating time is too long, the temperature of the power battery is easily heated to be too high, so that safety problems such as fire and explosion of the power battery are caused.
Therefore, how to safely and efficiently heat the power battery becomes a technical problem to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The utility model provides a thermal management power supply system of a power battery and a vehicle, and aims to solve the technical problem of how to efficiently and safely heat the power battery.
In order to achieve the above object, the present invention provides a thermal management power supply system for a power battery, including:
an external power supply device;
the battery heating assembly is arranged on the power battery and is electrically connected with external power supply equipment, and the battery heating assembly and the external power supply equipment form a battery heating loop;
the temperature sensor is arranged on the power battery and used for detecting the temperature of the power battery;
the direct current converter is electrically connected with external power supply equipment and converts high-voltage direct current provided by the external power supply equipment into low-voltage direct current;
the vehicle-mounted low-voltage electric appliance is electrically connected with the direct current converter, and the vehicle-mounted low-voltage electric appliance, the direct current converter and the external power supply equipment form a whole vehicle self-regulation loop;
the battery manager is electrically connected with the temperature sensor and is used for receiving temperature information detected by the temperature sensor;
the vehicle control unit is electrically connected with the battery manager and the direct current converter respectively, and is used for receiving the temperature information sent by the battery manager and controlling the direct current converter to adjust the power of the vehicle self-adjusting loop according to the temperature information so as to adjust the power of the battery heating loop.
Optionally, the thermal management power supply system further includes a current sensor and a voltage sensor, and the battery manager is electrically connected to the current sensor and the voltage sensor respectively;
the battery manager is also used for receiving current information of the battery heating loop detected by the current sensor and voltage information of the battery heating loop detected by the voltage sensor;
the vehicle control unit is used for receiving the temperature information, the current information and the voltage information sent by the battery manager, and controlling the direct current converter to adjust the power of the vehicle self-adjusting loop according to the temperature information, the current information and the voltage information so as to adjust the power of the battery heating loop.
Optionally, the thermal management power supply system further includes a heating relay, the heating relay is connected in series in the battery heating loop, and the battery manager is electrically connected to the heating relay and is configured to control the heating relay to be turned on or off according to the temperature information, the current information, and the voltage information.
Optionally, the thermal management power supply system further includes a heating fuse, and the heating fuse is connected in series in the battery heating loop.
Optionally, the dc converter is electrically connected to the power battery, and the power battery, the vehicle-mounted low-voltage electric appliance, the dc converter, and the external power supply device form a self-adjusting loop of the entire vehicle.
Optionally, the thermal management power supply system further includes a starting battery, the dc converter is electrically connected to the starting battery, the power battery, the vehicle-mounted low-voltage electric appliance, the dc converter, and the external power supply device form a whole vehicle self-adjusting loop.
Optionally, the vehicle-mounted low-voltage electrical appliance comprises a vehicle-mounted air conditioner, a vehicle window heater and an electronic fan.
Optionally, the battery heating assembly is tightly attached to the electric core heat-conducting plate of the power battery.
Optionally, the battery heating assembly is a PTC heating plate, and the PTC heating plate is fixed on the surface of the electric core heat-conducting plate through a PTC fixing bracket.
The utility model also provides a vehicle comprising the thermal management power supply system.
According to the utility model, the temperature information of the power battery is collected in real time, and the direct current converter is controlled to adjust the power of the self-adjusting loop of the whole vehicle according to the temperature information, so that the power supply power of the same external power supply equipment is always constant, namely the total power is constant, and when the power of the self-adjusting loop of the whole vehicle is changed, the power of the battery heating loop is also changed correspondingly, so that the whole vehicle controller can indirectly control the power of the battery heating loop by controlling the power of the self-adjusting loop of the whole vehicle. The power of the battery heating loop is in mutual connection with the heating power of the battery heating assembly, so that the real-time temperature of the power battery can be acquired, the heating power of the battery heating assembly can be accurately adjusted, when the power battery is in a low-temperature environment, the power battery module is heated at high power, the internal environment temperature of the power battery can be quickly improved, the heating power of the battery heating assembly is reduced when the power battery is heated to a proper temperature, the power battery module is kept warm, early-stage high-efficiency heating and later-stage battery heat preservation are realized, safety and controllability are realized, the thermal runaway risk caused by overheating is avoided, and the safety and the high efficiency of heating the power battery are further improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic block diagram of an embodiment of a thermal management power supply system of a power battery according to the present invention;
FIG. 2 is a schematic block diagram of a battery heating circuit according to an embodiment of the present invention;
FIG. 3 is a schematic block diagram of an embodiment of a vehicle self-tuning circuit according to the present invention;
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
The utility model provides a thermal management power supply system 1000 of a power battery 14.
In an embodiment of the present invention, referring to fig. 1 to fig. 3, a thermal management power supply system 1000 of a power battery 14, the thermal management power supply system 1000 includes: the system comprises an external power supply device 1, a battery heating assembly 2, a temperature sensor 4, a direct current converter 7, a vehicle-mounted low-voltage electric appliance 8, a battery manager 5 and a vehicle control unit 6. The battery heating assembly 2 is arranged on the power battery 14 and is electrically connected with the external power supply device 1, and the battery heating assembly 2 and the external power supply device 1 form a battery heating loop 100; the temperature sensor 4 is arranged on the power battery 14 and used for detecting the temperature of the power battery 14; the direct current converter 7 is electrically connected to the external power supply device 1, and converts the high-voltage direct current supplied from the external power supply device 1 into low-voltage direct current; the vehicle-mounted low-voltage electric appliance 8 is electrically connected with the direct current converter 7, and the vehicle-mounted low-voltage electric appliance 8, the direct current converter 7 and the external power supply equipment 1 form a whole vehicle self-regulation loop 200; the battery manager 5 is electrically connected with the temperature sensor 4, and the battery manager 5 is used for receiving temperature information detected by the temperature sensor 4; the vehicle control unit 6 is electrically connected with the battery manager 5 and the dc converter 7, respectively, and the vehicle control unit 6 is configured to receive the temperature information sent by the battery manager 5, and control the dc converter 7 to adjust the power of the vehicle self-regulation loop 200 according to the temperature information, so as to adjust the power of the battery heating loop 100.
In the embodiment, the temperature information of the power battery 14 is collected in real time, and the dc converter 7 is controlled to adjust the power of the entire vehicle self-regulation loop 200 according to the temperature information, it can be understood that, because the power supply power of the same external power supply device 1 is often constant, that is, the total power is constant, when the power of the entire vehicle self-regulation loop 200 changes, the power of the battery heating loop 100 also changes correspondingly, so the entire vehicle controller 6 can indirectly control the power of the battery heating loop 100 by controlling the power of the entire vehicle self-regulation loop 200. And the power size of battery heating circuit 100 and the heating power of battery heating element 2 are interrelated, therefore, the real-time temperature of power battery 14 is gathered to the accessible, the heating power of accurate adjustment battery heating element 2, thereby when power battery 14 is in the lower temperature environment, adopt higher power heating to power battery 14 module, improve the inside ambient temperature of power battery 14 fast, when heating power battery 14's suitable temperature, reduce battery heating element 2's heating power, keep warm power battery 14, realize earlier stage high efficiency heating, later stage battery keeps warm, and safe controllable, stop the thermal runaway risk that overheated leads to, and then improved the security and the high efficiency of heating power battery 14.
Further, the thermal management power supply system 1000 further includes a current sensor 10 and a voltage sensor 11, and the battery manager 5 is electrically connected to the current sensor 10 and the voltage sensor 11, respectively;
the battery manager 5 is also used for receiving the current information of the battery heating circuit 100 detected by the current sensor 10 and the voltage information of the battery heating circuit 100 detected by the voltage sensor 11;
the vehicle control unit 6 is configured to receive the temperature information, the current information, and the voltage information sent by the battery manager 5, and control the dc converter 7 to adjust the power of the vehicle self-regulation loop 200 according to the temperature information, the current information, and the voltage information, so as to adjust the power of the battery heating loop 100.
In the embodiment, the current information and the voltage information of the battery heating circuit 100 are collected and provided to the vehicle control unit 6, so that the vehicle control unit 6 adjusts the heating power of the battery heating assembly 2 more accurately, and the safety and the efficiency of heating the power battery 14 are further improved.
Further, the thermal management power supply system 1000 further includes a heating relay 12, the heating relay 12 is connected in series in the battery heating circuit 100, and the battery manager 5 is electrically connected to the heating relay 12 and is configured to control the heating relay 12 to be turned on or off according to the temperature information, the current information, and the voltage information.
According to the embodiment, the battery manager 5 can directly control the heating relay 12 to be switched on or switched off according to the temperature information, the current information and the voltage information, so that the battery manager 5 can directly switch on or switch off the battery heating loop 100, the control efficiency of controlling the power battery 14 to be heated or to be stopped from being heated is improved, and the safety and the efficiency of heating the power battery 14 are further improved.
Further, the thermal management power supply system 1000 further includes a heating fuse 13, and the heating fuse 13 is connected in series in the battery heating circuit 100.
The heating fuse 13 may be a heating fuse, and the heating fuse is a fuse link. The heating fuse 13 is connected in series in the battery heating circuit 100, and is used for disconnecting the battery heating circuit 100 in an emergency, so as to protect the battery heating circuit 100, and when the battery heating circuit 100 is short-circuited or otherwise abnormal, the heating fuse 13 is blown in time.
Further, the dc converter 7 is electrically connected to the power battery 14, and the power battery 14, the vehicle-mounted low-voltage electrical appliance 8, the dc converter 7, and the external power supply device 1 form a vehicle self-regulation loop 200, so that the vehicle self-regulation loop 200 is convenient to charge the power battery 14, that is, the power battery 14 can be charged while being heated.
It can be understood that the dc converter 7 may be an all-in-one distribution box, which can convert the voltage of the external power supply device 1 into a low voltage, for example 12V, adapted to the vehicle-mounted low-voltage electrical appliance 8, or convert the voltage of the external power supply device 1 into a high voltage adapted to the power battery 14.
Further, the thermal management power supply system 1000 further includes a starting battery 15, the dc converter 7 is electrically connected to the starting battery 15, the power battery 14, the vehicle-mounted low-voltage electrical appliance 8, the dc converter 7, and the external power supply device 1 form a vehicle-finished self-adjusting loop 200. Therefore, the whole vehicle self-adjusting loop 200 is convenient to charge the starting battery 15, and the starting battery 15 can be charged while the power battery 14 is heated.
Further, the vehicle-mounted low-voltage electric appliances 8 include a vehicle-mounted air conditioner, a window heater, and an electronic fan.
The vehicle-mounted low-voltage electrical appliance 8 is mainly used for distributing the power of the whole vehicle self-regulating loop 200, and the vehicle-mounted low-voltage electrical appliance 8 comprises a vehicle-mounted air conditioner, a vehicle window heater and an electronic fan. It will be appreciated that power regulation of the vehicle self-regulation loop 200 may be achieved by controlling the switching on or off of one or more of the vehicle air conditioner, the window heater and the electric fan, the vehicle low voltage electrical loads 8.
Furthermore, the battery heating assembly 2 is tightly attached to the cell heat-conducting plate of the power battery 14, so that the heating efficiency of the power battery 14 is improved.
Further, the battery heating assembly 2 is a PTC (parametric Technology corporation) heating plate, and the PTC heating plate is fixed on the surface of the cell heat-conducting plate through a PTC fixing bracket, so that the battery heating assembly 2 is more stably attached to the cell heat-conducting plate of the power battery 14, and the heating efficiency of the power battery 14 is improved, and the structural stability is improved.
The utility model also provides a vehicle comprising the thermal management power supply system 1000.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the technical solutions of the present invention, which are made by using the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A thermal management power supply system of a power battery is characterized by comprising:
an external power supply device;
the battery heating assembly is arranged on the power battery and is electrically connected with external power supply equipment, and the battery heating assembly and the external power supply equipment form a battery heating loop;
the temperature sensor is arranged on the power battery and used for detecting the temperature of the power battery;
the direct current converter is electrically connected with external power supply equipment and converts high-voltage direct current provided by the external power supply equipment into low-voltage direct current;
the vehicle-mounted low-voltage electric appliance is electrically connected with the direct current converter, and the vehicle-mounted low-voltage electric appliance, the direct current converter and the external power supply equipment form a whole vehicle self-regulation loop;
the battery manager is electrically connected with the temperature sensor and is used for receiving temperature information detected by the temperature sensor;
the vehicle control unit is electrically connected with the battery manager and the direct current converter respectively, and is used for receiving the temperature information sent by the battery manager and controlling the direct current converter to adjust the power of the vehicle self-adjusting loop according to the temperature information so as to adjust the power of the battery heating loop.
2. The thermal management power supply system of claim 1, further comprising a current sensor and a voltage sensor, wherein said battery manager is electrically connected to said current sensor and said voltage sensor, respectively;
the battery manager is also used for receiving current information of the battery heating loop detected by the current sensor and voltage information of the battery heating loop detected by the voltage sensor;
the vehicle control unit is used for receiving the temperature information, the current information and the voltage information sent by the battery manager, and controlling the direct current converter to adjust the power of the vehicle self-adjusting loop according to the temperature information, the current information and the voltage information so as to adjust the power of the battery heating loop.
3. The thermal management power supply system of claim 2, further comprising a heating relay connected in series in the battery heating loop, wherein the battery manager is electrically connected to the heating relay for controlling the heating relay to close or open according to the temperature information, the current information, and the voltage information.
4. The thermal management power supply system of claim 1, further comprising a heating fuse connected in series in said battery heating loop.
5. The thermal management power supply system according to claim 1, wherein said dc converter is electrically connected to said power battery, said vehicle-mounted low-voltage electrical appliance, said dc converter, and said external power supply device form a vehicle self-regulation loop.
6. The thermal management power supply system according to claim 5, further comprising a starting battery, wherein said DC converter is electrically connected to said starting battery, and said starting battery, said power battery, said vehicle-mounted low-voltage electrical appliance, said DC converter, and said external power supply device form a vehicle self-regulation loop.
7. The thermal management power supply system of claim 1, wherein said vehicle mounted low voltage electrical appliances comprise a vehicle mounted air conditioner, a window heater and an electronic fan.
8. The thermal management power supply system of claim 1, wherein the battery heating assembly is affixed to a cell heat-conducting plate of the power battery.
9. The thermal management power supply system of claim 8, wherein the battery heating assembly is a PTC heating plate secured to the surface of the cell heat-conducting plate by a PTC fixing bracket.
10. A vehicle, characterized in that it comprises a thermal management power supply system according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122238307.3U CN215869565U (en) | 2021-09-15 | 2021-09-15 | Thermal management power supply system of power battery and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122238307.3U CN215869565U (en) | 2021-09-15 | 2021-09-15 | Thermal management power supply system of power battery and vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN215869565U true CN215869565U (en) | 2022-02-18 |
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|---|---|---|---|
| CN202122238307.3U Active CN215869565U (en) | 2021-09-15 | 2021-09-15 | Thermal management power supply system of power battery and vehicle |
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| CN (1) | CN215869565U (en) |
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2021
- 2021-09-15 CN CN202122238307.3U patent/CN215869565U/en active Active
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