CN213989095U - Power battery low temperature control system and vehicle - Google Patents
Power battery low temperature control system and vehicle Download PDFInfo
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- CN213989095U CN213989095U CN202120038231.7U CN202120038231U CN213989095U CN 213989095 U CN213989095 U CN 213989095U CN 202120038231 U CN202120038231 U CN 202120038231U CN 213989095 U CN213989095 U CN 213989095U
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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 utility model provides a power battery low temperature control system and vehicle, power battery low temperature control system includes: a battery, comprising: a plurality of battery modules; the battery module includes: the battery comprises a battery frame and a battery cell arranged in the battery frame; a first heating system comprising: a positive temperature coefficient heater; the positive temperature coefficient heaters are arranged on the periphery and the lower bottom surface of the outer side of each battery frame; a second heating system comprising: the battery water heating type heater, the water replenishing pipe, the water pump and the water cooling plate are connected in sequence; the battery modules and the positive temperature coefficient heater are arranged on the upper surface of the water cooling plate. The utility model discloses the scheme designs two heating system, and at the lower temperature, opens battery hot-water heating formula heater, adds the coolant liquid in the hot water cooling board, and under the extremely low temperature, opens battery hot-water heating formula heater and positive temperature coefficient heater and heats, can solve between the battery module because of the big unbalanced phenomenon of temperature that leads to of the difference in temperature for the programming rate of temperature of battery.
Description
Technical Field
The utility model relates to a power battery technical field, in particular to power battery low temperature control system and vehicle.
Background
With the popularization of new energy automobiles, the performance of the power battery also receives more and more attention. At present, research finds that the performance of the lithium ion power battery is significantly influenced by the environmental temperature, the power output capacity of the power battery is greatly reduced in a low-temperature state, the driving feeling of a driver can be influenced by forcibly using the power battery under the conditions that the environmental temperature is lower than-20 ℃ and the temperature of the power battery cannot be increased, and the aging of the power battery can be accelerated, so that the low-temperature performance of the power battery is improved to effectively improve the practicability of the battery for ensuring the popularization of the power battery in the national range.
The heating performance of the low-temperature power battery affects many characteristic parameters of the power battery, such as internal resistance, voltage, State of Charge (SOC), available capacity, Charge-discharge efficiency, battery life, and the like. At present, the cooling method of square battery module arranges the water-cooling board in the below of power battery module mainly for cooling battery module, also can use the water-cooling board to heat power battery simultaneously, the heating method is: the battery cooling system is heated by a Positive Temperature Coefficient (PTC) heater, and the cooling liquid is circulated into a battery water cooling plate by a water pump, so that the power battery is integrally heated.
In order to make the power battery perform the best performance and have the best service life, the structure of the power battery needs to be optimized, the power battery is subjected to thermal management, a low-temperature heating facility is added, and the operating temperature environment of the power battery is controlled.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a power battery low temperature control system and vehicle for it is not good to solve battery module heating effect among the prior art, and power battery heaies up the problem of inefficiency in cooling process.
In order to solve the technical problem, an embodiment of the utility model provides a following technical scheme:
the embodiment of the utility model provides a power battery low temperature control system, include:
a battery, the battery comprising: a plurality of battery modules connected by a wire harness;
each of the battery modules includes: the battery comprises a battery frame and a battery cell arranged in the battery frame;
a first heating system comprising: a positive temperature coefficient heater;
the positive temperature coefficient heaters are arranged on the periphery and the lower bottom surface of the outer side of each battery frame;
a second heating system comprising: the battery water heating type heater, the water replenishing pipe, the water pump and the water cooling plate are connected in sequence;
the battery modules and the positive temperature coefficient heater are arranged on the upper surface of the water cooling plate.
Optionally, the method further comprises:
a battery management system, comprising: the positive temperature coefficient heating control relay is connected with the positive temperature coefficient heater;
and the water heating control relay is connected with the battery water heating type heater.
Optionally, the battery management system further comprises: and the temperature information collector is connected with each battery module.
Optionally, the first heating system further comprises: and the heat conduction silica gel sheet is arranged between the positive temperature coefficient heater and the battery frame.
Optionally, the outer side surface of the heat-conducting silica gel sheet is made of an insulating material.
Optionally, the heat conducting silica gel sheet is internally provided with a heat conducting material.
The embodiment of the utility model provides a still provide a vehicle, include as above arbitrary power battery low temperature control system.
The utility model has the advantages that:
provided is a power battery low-temperature control system, comprising: a battery, the battery comprising: a plurality of battery modules connected by a wire harness; each of the battery modules includes: the battery comprises a battery frame and a battery cell arranged in the battery frame; a first heating system comprising: a positive temperature coefficient heater; the positive temperature coefficient heaters are arranged on the periphery and the lower bottom surface of the outer side of each battery frame; a second heating system comprising: the battery water heating type heater, the water replenishing pipe, the water pump and the water cooling plate are connected in sequence; the battery modules and the positive temperature coefficient heater are arranged on the upper surface of the water cooling plate. Through designing two heating system, under the condition of lower temperature, open battery hot-water heating formula heater, add the coolant liquid in the hot water-cooling board, carry out the battery heating, under the condition of extremely low temperature, guarantee under the condition that coolant liquid circulation heating opened, open positive temperature coefficient heater and heat, can solve between the power battery module because the temperature imbalance's that the difference in temperature is too big phenomenon that leads to for power battery's programming rate simultaneously, strengthen the practicality of power battery under the low temperature state.
Drawings
Fig. 1 is a schematic structural diagram of a first heating system provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second heating system provided by an embodiment of the present invention;
fig. 3 shows a circuit control diagram of a low-temperature control system for a power battery according to an embodiment of the present invention.
Description of reference numerals:
1-a battery module; 11-a battery frame; 12-electric core; 2-a positive temperature coefficient heater; 3-water cooling plate; 4-positive temperature coefficient heating control relay; 5-water heating control relay; 6-temperature information collector; 7-heat conducting silica gel sheet.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model discloses battery module heating effect is not good among the prior art, and power battery intensifies the problem of inefficiency in the cooling process, provides a power battery low temperature control system and vehicle.
As shown in fig. 1 to 2, an embodiment of the present invention provides a power battery low temperature control system, including:
a power battery low temperature control system, comprising:
a battery, the battery comprising: a plurality of battery modules 1 connected by a wire harness;
each of the battery modules 1 includes: the battery comprises a battery frame 11 and a battery cell 12 arranged inside the battery frame 11;
a first heating system comprising: a positive temperature coefficient heater 2;
the positive temperature coefficient heater 2 is arranged on the periphery and the lower bottom surface of the outer side of each battery frame 11;
a second heating system comprising: a battery water heating heater, a water replenishing pipe, a water pump and a water cooling plate 3 which are connected in sequence;
wherein, a plurality of the battery modules 1 and the positive temperature coefficient heater 2 are disposed on the upper surface of the water cooling plate 3.
It should be noted that the heating system of the present embodiment mainly considers the thermal management of the square battery module.
The single battery module 1 is formed by a frame structure, and the battery cell 12 is firmly fixed by the battery frame 11.
Through designing two heating systems, under the condition of lower temperature (-10 ℃ to-20 ℃), the battery water-heating heater is started to heat the cooling liquid, the cooling liquid circulates in the water cooling plate 3 through the water pump to heat the whole battery, under the condition of extremely low temperature (lower than-20 ℃), the PTC heater 2 is started to heat under the condition of ensuring the circulation heating of the cooling liquid to be started, the phenomenon of temperature imbalance between single power batteries due to overlarge temperature difference can be solved, the heating speed of the power batteries is accelerated at the same time, and the practicability of the power batteries in the low-temperature state is enhanced.
The PTC heaters 2 are uniformly arranged on the periphery and the lower bottom surface of the outer side of each battery frame 11, so that the PTC heaters 2 can uniformly heat each battery module.
Alternatively, the battery water-heating type heater also employs a PTC type heater.
The power battery low temperature control system further comprises:
a battery management system, comprising: the positive temperature coefficient heating control relay 4 is connected with the positive temperature coefficient heater 2;
and the water heating control relay 5 is connected with the battery water heating type heater.
It should be noted that, as shown in fig. 3, logic controls corresponding to the first heating System and the second heating System are added to a Battery Management System (BMS), the PTC heater 2 is controlled to be turned on and off by the PTC heating control relay 4, and the Battery water heating type heater is controlled to be turned on and off by the water heating control relay 5.
Optionally, the battery management system further comprises: and the temperature information collector 6 is connected with each battery module 1.
Please refer to fig. 3, the temperature information collector 6 is used for constantly monitoring the temperature of the battery module.
The temperature information collector 6 is also respectively connected with the PTC heating control relay 4 and the water heating control relay 5, when the temperature information collector 6 monitors that the temperature of the battery module 1 reaches between minus 10 ℃ and minus 20 ℃, the battery management system BMS controls the water heating control relay 5 to be opened, when the temperature information collector 6 monitors that the temperature of the battery module 1 reaches below minus 20 ℃, the battery management system BMS controls the water heating control relay 5 and the PTC heating control relay 4 to be opened, until the temperature information collector 1 monitors that the temperature of the battery module 1 reaches above minus 20 ℃, the PTC heating control relay 4 is controlled to be closed, only the water heating control relay 5 is opened, the battery module is heated until the maximum temperature value of the battery module reaches 0 ℃, and the water heating control relay 5 is controlled to be closed, the optimal heating effect on the battery module 1 is achieved.
Optionally, the first heating system further comprises: and the heat-conducting silicon rubber sheet 7 is arranged between the positive temperature coefficient heater 2 and the battery frame 11.
Optionally, the outer side surface of the heat-conducting silica gel sheet 7 is made of an insulating material.
Optionally, the heat conductive silicone sheet 7 is provided with a heat conductive material inside.
It should be noted that the heat-conducting silicone sheet 7 with the outer side surface made of the insulating material is arranged between the PTC heater 2 and the battery frame 11 of the battery module 1, so that the problem of uneven heating caused by direct contact between the PTC heater 2 and the battery module 1 and the problem of temperature difference between different battery modules 1 generated in the heating process can be avoided. Meanwhile, the heat conduction material is added in the heat conduction silica gel sheet 7, so that the heat conduction capability is enhanced, and the heat conduction timeliness is improved.
Optionally, the thermally conductive material is an electrically conductive agent alumina.
The inner side surface of the battery frame 11 can be evenly coated with heat preservation glue, so that the heat preservation effect of the high-power battery is achieved.
The embodiment of the utility model provides a still provide a vehicle, include as above arbitrary power battery low temperature control system.
It should be noted that, the vehicle in this embodiment includes foretell power battery low temperature control system, because this power battery low temperature control system has foretell technological effect, the utility model discloses the vehicle of embodiment also should have corresponding technological effect, no longer describes herein.
The foregoing is directed to the preferred embodiments of the present invention, and it will be understood by those skilled in the art that various changes and modifications may be made without departing from the principles of the invention, and that such changes and modifications are intended to be included within the scope of the invention.
Claims (7)
1. A power battery low temperature control system, comprising:
a battery, the battery comprising: a plurality of battery modules (1) connected by a wire harness;
each of the battery modules (1) includes: the battery comprises a battery frame (11) and a battery core (12) arranged inside the battery frame (11);
a first heating system comprising: a positive temperature coefficient heater (2);
the positive temperature coefficient heaters (2) are arranged on the periphery and the lower bottom surface of the outer side of each battery frame (11);
a second heating system comprising: a battery water heating type heater, a water replenishing pipe, a water pump and a water cooling plate (3) which are connected in sequence;
wherein the plurality of battery modules (1) and the positive temperature coefficient heater (2) are arranged on the upper surface of the water cooling plate (3).
2. The power battery low temperature control system according to claim 1, further comprising:
a battery management system, comprising: the positive temperature coefficient heating control relay (4) is connected with the positive temperature coefficient heater (2);
and the water heating control relay (5) is connected with the battery water heating type heater.
3. The power battery cryogenic control system of claim 2, the battery management system further comprising: and the temperature information collector (6) is connected with each battery module (1).
4. The power battery cryogenic control system of claim 1, wherein the first heating system further comprises: and the heat conduction silica gel sheet (7) is arranged between the positive temperature coefficient heater (2) and the battery frame (11).
5. The power battery low-temperature control system according to claim 4, wherein the outer side surface of the heat-conducting silicon sheet (7) is made of an insulating material.
6. The power battery low-temperature control system according to claim 4, characterized in that the heat conducting silicon sheet (7) is internally provided with a heat conducting material.
7. A vehicle characterized by comprising the power battery low temperature control system according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120038231.7U CN213989095U (en) | 2021-01-07 | 2021-01-07 | Power battery low temperature control system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120038231.7U CN213989095U (en) | 2021-01-07 | 2021-01-07 | Power battery low temperature control system and vehicle |
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| Publication Number | Publication Date |
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| CN213989095U true CN213989095U (en) | 2021-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120038231.7U Active CN213989095U (en) | 2021-01-07 | 2021-01-07 | Power battery low temperature control system and vehicle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113884902A (en) * | 2021-10-28 | 2022-01-04 | 华南理工大学 | Battery phase change heating system capable of self-supplying energy at low temperature |
| WO2023226432A1 (en) * | 2022-05-27 | 2023-11-30 | 华为技术有限公司 | Temperature control apparatus, temperature control method, and vehicle |
-
2021
- 2021-01-07 CN CN202120038231.7U patent/CN213989095U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113884902A (en) * | 2021-10-28 | 2022-01-04 | 华南理工大学 | Battery phase change heating system capable of self-supplying energy at low temperature |
| WO2023226432A1 (en) * | 2022-05-27 | 2023-11-30 | 华为技术有限公司 | Temperature control apparatus, temperature control method, and vehicle |
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