CN212033183U - Heat exchange device of lithium ion battery pack - Google Patents
Heat exchange device of lithium ion battery pack Download PDFInfo
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- CN212033183U CN212033183U CN202020697093.9U CN202020697093U CN212033183U CN 212033183 U CN212033183 U CN 212033183U CN 202020697093 U CN202020697093 U CN 202020697093U CN 212033183 U CN212033183 U CN 212033183U
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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 lithium ion battery pack heat exchange device, which comprises a heat exchange plate, a heat exchanger and a heat exchanger, wherein the heat exchange plate has heat conduction and overcurrent functions and is made of a high-heat-conductivity and electric-conductivity metal plate; a flow channel for flowing of heat exchange liquid is arranged in the heat exchange plate; the heat exchange plate is provided with two or more water nozzles which are communicated with the flow channel; the communication device is an insulating through pipe, and two ends of the communication device are respectively communicated with water nozzles of two adjacent heat exchange plates; the plurality of communication devices are communicated with the water nozzles of the plurality of adjacent heat exchange plates, so that the plurality of heat exchange plates are communicated with one another, and only two water nozzles are reserved in the plurality of heat exchange plates to serve as a liquid inlet and a liquid outlet; after flowing into the liquid inlet, the heat exchange liquid flows through the plurality of heat exchange plates and finally flows out of the liquid outlet; the integrated heat exchange and overcurrent functions enable the module to be heated more uniformly, the temperature difference between batteries is smaller, and meanwhile, resistance heat caused by overcurrent is reduced; the design of the module is compatible with various thermal management functions.
Description
Technical Field
The utility model relates to a lithium ion battery group heat transfer device.
Background
After a cylindrical lithium ion battery is formed into a module, the cylindrical lithium ion battery is formed into a module, and the conventional method is to use an aluminum bar or a copper bar to be connected in series; the heating of the module can only be realized by designing a heating device, such as a heating film and a PTC heater, at the side surface or the bottom of the module; the design has high cost; the heating effect of the battery core in the module is extremely poor, and the temperature difference is large; and only has a heating function and is incompatible with cooling.
Another cooling method is to install a serpentine cold plate or a heat conductive material inside the battery module. This scheme is very high to the machining precision requirement of cold parts of heat transfer such as snakelike cold plate, and the cost is high, and the module, module equipment degree of difficulty are big moreover, and manual operation difficulty, and automatic equipment requires again highly to equipment, has greatly restricted the application of this scheme.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming above-mentioned defect, provide a lithium ion battery group heat transfer device and heat management method thereof.
The utility model adopts the following technical scheme:
a heat exchange device of a lithium ion battery pack comprises a heat exchange plate, a heat exchanger and a heat exchanger, wherein the heat exchange plate has heat conduction and overcurrent functions and is made of a high-heat-conduction and electric-conduction metal plate; a flow channel for flowing of heat exchange liquid is arranged in the heat exchange plate, and an installation position for fixedly installing and attaching the battery pack is arranged; the heat exchange plate is provided with two or more water nozzles which are communicated with the flow channel; the communication device is an insulating through pipe, and two ends of the communication device are respectively communicated with water nozzles of two adjacent heat exchange plates; the plurality of communication devices are communicated with the water nozzles of the plurality of adjacent heat exchange plates, so that the plurality of heat exchange plates are communicated with one another, and only two water nozzles are reserved in the plurality of heat exchange plates to serve as a liquid inlet and a liquid outlet; after the heat exchange liquid flows into the liquid inlet, the heat exchange liquid flows through the plurality of heat exchange plates and finally flows out through the liquid outlet.
Preferably, the battery pack comprises a bracket, a cylindrical battery cell of a lithium battery, a module end plate and a fastening device; the plurality of lithium battery cylindrical cells are placed on a support, the two surfaces of the support are provided with confluence pieces, and the two confluence pieces are attached to the plurality of lithium battery cylindrical cells to form a single battery pack; the multiple groups of single battery packs are mutually connected, and two ends of each single battery pack are fixed through a fastening device and two module end plates to form a battery pack; the installation positions are through holes and are used for fixedly installing heat exchange plates between two adjacent single battery packs and at the inner sides of the module end plates at two ends of the single battery packs through fastening devices of the battery packs and tightly attached to the bus bars of the single battery packs.
Preferably, the fastening device is a fastening screw.
Preferably, the heat exchange plate is formed by assembling two heat exchange panels; the heat exchange panel structure is bilaterally symmetrical and is formed by die punching.
Preferably, a plurality of flow channel segmentation positions for shunting the heat exchange liquid are arranged in the heat exchange plate; the runner is cut apart the position and is the through-hole is fastener's installation position, and its formation in heat transfer board is inside for heat transfer liquid shunts, or the design in two heat transfer panels is assembled the position and is formed, makes heat transfer liquid shunt.
Preferably, the heat exchange plate is made of aluminum or copper.
Preferably, a temperature control device is further arranged; the temperature control device is arranged in the lithium ion battery pack or on the heat exchange plate; the temperature control device is used for monitoring the internal temperature of the battery module and feeding back a fluid control signal in the heat exchange plate so as to control the speed of the fluid and further control the temperature; the temperature control device includes: temperature sensor, flow control valve.
A thermal management method of a lithium ion battery pack heat exchange device implemented by the lithium ion battery pack heat exchange device comprises the following steps: fluid is input into any heat exchange plate of the heat exchange device through a water pump, flows in the heat exchange plates and among the shortened communication devices and finally flows out, and circulation is achieved; the temperature sensor collects temperature information and feeds the temperature information back to a Battery Management System (BMS), and the Battery Management System (BMS) controls the flow control valve to control the flow rate, so that the flow speed of the controlled fluid is controlled.
Preferably, the fluid is an insulating fluid.
Preferably, the fluid is a fluorocarbon or kerosene.
The utility model has the advantages that: the utility model relates to a heat exchange device of a lithium ion battery pack and a heat management method of the heat exchange device of the lithium ion battery pack implemented by utilizing the heat exchange device of the lithium ion battery pack; the structure can integrate overcurrent and thermal management functions, simplify the assembly process and reduce the design and manufacturing cost of the battery module; by adopting the design of the heat exchange device and the module thereof disclosed by the scheme, various heat management function requirements can be compatible on the premise of keeping the structure unchanged, and allowance is provided for the expansion and application of the module and the quality improvement; the cylindrical lithium ion battery module integrates heat exchange and overcurrent functions, so that the module is heated more uniformly, the temperature difference between batteries is smaller, and simultaneously, resistance heat caused by overcurrent is reduced; the design of the module is compatible with various heat management functions, the requirements of different combinations of heating functions and/or cooling functions are met, and the structural design is unchanged, so that the design and the processing of the battery module are simplified, the overall cost of the battery pack is reduced, and the production efficiency is improved.
Drawings
Fig. 1 is a schematic diagram of a conventional lithium ion battery pack of the present invention.
Fig. 2 is an overall schematic diagram of the present invention.
Fig. 3 is a front view of a heat exchange plate showing a flow passage according to the present invention.
Fig. 4 is a schematic view of the heat exchange panel of the present invention.
Fig. 5 is a schematic diagram of the present invention.
Detailed Description
In order to make the purpose and technical solution of the present invention clearer, the following description is made with reference to the accompanying drawings and embodiments to further explain the present invention:
the heat exchange device of the lithium ion battery pack shown in fig. 1 to 5 comprises a bracket 11, a cylindrical battery cell 12 of a lithium battery, a module end plate 14 and a fastening device 15; the plurality of lithium battery cylindrical cells 12 are placed on the support 11, the two sides of the support 11 are respectively provided with a manifold sheet 13, and the two manifold sheets 13 are attached to the plurality of lithium battery cylindrical cells 12 to form a single battery pack 1; a plurality of groups of single battery packs 1 are connected with each other, and two ends of each single battery pack are fixed through a fastening device 15 and two module end plates 14 to form a lithium ion battery pack; further comprising: and the heat exchange devices are arranged between two adjacent single battery packs 1 and at the inner sides of the module end plates 14 at the two ends of the single battery packs and are tightly attached to the confluence plates 13 of the battery packs.
The heat exchange device comprises: the heat exchange plate 2 has heat conduction and overcurrent functions and is made of a high-heat-conduction and electric-conduction metal plate; a flow channel 23 for flowing of heat exchange liquid is arranged in the heat exchange plate, and a through hole 25 for fixing a fastening device is arranged on the surface; the first water nozzle 21 is positioned on the heat exchange plate 2 and communicated with the flow channel 23; the second water nozzle 22 is positioned on the heat exchange plate and communicated with the flow passage 23; the communicating device 3 is an insulated through pipe, and two ends of the communicating device are respectively communicated with the first water nozzle 21 or the second water nozzle 22 of two adjacent heat exchange plates, so that heat exchange liquid can flow out after flowing through the heat exchange plates 2.
Preferably, the heat exchange plate 2 is formed by assembling two heat exchange panels 24, and the assembling mode of the heat exchange plate 2 is welding.
Preferably, the through hole is an installation position of the fastening device, and a dividing flow channel 26 is formed in the heat exchange plate, so that the heat exchange liquid is divided into flow channel dividing positions; the first water nozzle below the first water nozzle or the second water nozzle is further provided with a plurality of flow channel dividing positions 26, and the flow channel dividing positions 26 enable heat exchange liquid flowing through the flow channel 23 to be divided, so that the area of the heat exchange liquid flowing through the heat exchange plate is as large as possible, and the heat exchange effect is optimal.
Preferably, the fastening device 15 is a fastening screw.
Preferably, the heat exchange plate 2 is made of aluminum or copper.
Preferably, a temperature control device (not shown in the figure) is also arranged; the temperature control device is arranged in the lithium ion battery pack or on the heat exchange plate 2; the temperature control device is used for monitoring the internal temperature of the battery module and feeding back a fluid control signal in the heat exchange plate so as to control the speed of the fluid and further control the temperature; the temperature control device includes: a temperature sensor (not shown), a flow control valve (not shown).
A thermal management method of a lithium ion battery pack heat exchange device implemented by the lithium ion battery pack heat exchange device comprises the following steps: fluid is input into any heat exchange plate of the heat exchange device through a water pump (not shown in the figure), and flows in the heat exchange plates and among the shortened communication devices and finally flows out, so that circulation is realized; the temperature sensor collects temperature information and feeds the temperature information back to a Battery Management System (BMS), and the Battery Management System (BMS) controls the flow control valve to control the flow rate, so that the flow speed of the controlled fluid is controlled.
Preferably, the fluid is an insulating fluid.
Preferably, the fluid is a fluorocarbon or kerosene.
The specific implementation manner of the utility model is as follows:
the current trend is the current of the electric core in the first single battery pack 1, after being collected by the bus bar 13, the current flows through the heat exchange plate tightly attached to the bus bar and flows into the second single battery pack; in this manner, current flows in series from one end of the module to the other; when the module has no heating/cooling requirement, the first water nozzle 21 or the second water nozzle 22 of the two non-connection communication devices 3 is plugged; when the module has heating/cooling requirements, the first water nozzle 21 or the second water nozzle 22 at one end of the module is introduced with heated fluid medium/low-temperature fluid and flows out from the first water nozzle 21 or the second water nozzle 22 at the other end, and the module is heated or cooled by the fluid medium.
The utility model comprises a bracket 11, a lithium battery cylindrical cell 12, a module end plate 14 and a fastening device 15; the plurality of lithium battery cylindrical cells 12 are placed on the support 11, the two sides of the support 11 are respectively provided with a manifold sheet 13, and the two manifold sheets 13 are attached to the plurality of lithium battery cylindrical cells 12 to form a single battery pack 1; a plurality of groups of single battery packs 1 are connected with each other, and two ends of each single battery pack are fixed through a fastening device 15 and two module end plates 14 to form a lithium ion battery pack; the lithium ion battery described therein is a component known to those skilled in the art, and the structure and principle thereof are known to those skilled in the art through technical manuals or through routine experimentation.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments still belong to the protection scope of the present invention.
Claims (7)
1. A lithium ion battery pack heat exchange device, comprising:
the heat exchange plate has heat conduction and overcurrent functions and is made of a high-heat-conduction and electric-conduction metal plate; a flow channel for flowing of heat exchange liquid is arranged in the heat exchange plate, and an installation position for fixedly installing and attaching the battery pack is arranged;
the heat exchange plate is provided with two or more water nozzles which are communicated with the flow channel;
the communication device is an insulating through pipe, and two ends of the communication device are respectively communicated with water nozzles of two adjacent heat exchange plates;
the plurality of communication devices are communicated with the water nozzles of the plurality of adjacent heat exchange plates, so that the plurality of heat exchange plates are communicated with one another, and only two water nozzles are reserved in the plurality of heat exchange plates to serve as a liquid inlet and a liquid outlet; after the heat exchange liquid flows into the liquid inlet, the heat exchange liquid flows through the plurality of heat exchange plates and finally flows out through the liquid outlet.
2. The heat exchange device of the lithium ion battery pack as claimed in claim 1, wherein:
the battery pack comprises a bracket, a lithium battery cylindrical cell, a module end plate and a fastening device; the plurality of lithium battery cylindrical cells are placed on a support, the two surfaces of the support are provided with confluence pieces, and the two confluence pieces are attached to the plurality of lithium battery cylindrical cells to form a single battery pack; the multiple groups of single battery packs are mutually connected, and two ends of each single battery pack are fixed through a fastening device and two module end plates to form a battery pack;
the installation positions are through holes and are used for fixedly installing heat exchange plates between two adjacent single battery packs and at the inner sides of the module end plates at two ends of the single battery packs through fastening devices of the battery packs and tightly attached to the bus bars of the single battery packs.
3. The heat exchange device of the lithium ion battery pack as claimed in claim 2, wherein:
the fastening device is a fastening screw rod.
4. The heat exchange device of the lithium ion battery pack as claimed in claim 1, wherein:
the heat exchange plate is formed by assembling two heat exchange panels;
the heat exchange panel structure is bilaterally symmetrical and is formed by die punching.
5. The heat exchange device of the lithium ion battery pack as claimed in claim 2, wherein:
a plurality of flow channel dividing positions for dividing the heat exchange liquid are arranged in the heat exchange plate;
the flow channel dividing positions are the through holes, the through holes are formed in the heat exchange plates, so that the heat exchange liquid is divided, or the design assembling positions in the two heat exchange panels are formed, so that the heat exchange liquid is divided.
6. The heat exchange device of the lithium ion battery pack as claimed in claim 1, wherein:
the heat exchange plate is made of aluminum or copper.
7. The heat exchange device of the lithium ion battery pack as claimed in claim 1, wherein:
a temperature control device is also arranged;
the temperature control device is arranged in the lithium ion battery pack or on the heat exchange plate;
the temperature control device is used for monitoring the internal temperature of the battery module and feeding back a fluid control signal in the heat exchange plate so as to control the speed of the fluid and further control the temperature;
the temperature control device includes: temperature sensor, flow control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020697093.9U CN212033183U (en) | 2020-04-30 | 2020-04-30 | Heat exchange device of lithium ion battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020697093.9U CN212033183U (en) | 2020-04-30 | 2020-04-30 | Heat exchange device of lithium ion battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212033183U true CN212033183U (en) | 2020-11-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020697093.9U Active CN212033183U (en) | 2020-04-30 | 2020-04-30 | Heat exchange device of lithium ion battery pack |
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| Country | Link |
|---|---|
| CN (1) | CN212033183U (en) |
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2020
- 2020-04-30 CN CN202020697093.9U patent/CN212033183U/en active Active
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