CN211455742U - Lithium ion battery heat conduction device - Google Patents
Lithium ion battery heat conduction device Download PDFInfo
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- CN211455742U CN211455742U CN201920058882.5U CN201920058882U CN211455742U CN 211455742 U CN211455742 U CN 211455742U CN 201920058882 U CN201920058882 U CN 201920058882U CN 211455742 U CN211455742 U CN 211455742U
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- heat
- conducting plate
- battery core
- heat conducting
- shell
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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
A heat conduction device of a lithium ion battery comprises a battery core, a battery core bracket, a lug connected with the battery core, a battery core shell and a heat conduction plate, wherein one end of the heat conduction plate is connected with the lug, the other end of the heat conduction plate is connected with the battery core shell, a heat conduction channel is formed among the battery core, the lug, the heat conduction plate and the battery core shell, and the battery core shell is used as a heat conduction terminal to form a heat storage chamber; in the process of charging and discharging the lithium battery module, heat generated on a pole piece and a diaphragm in the battery core is transferred to positive and negative pole lugs through positive and negative pole current collectors of the battery core and is transferred to the battery core shell through a heat conducting plate connected with the battery core, so that a temperature field is rapidly balanced, the heat conducting plate is directly connected with the battery core shell, the shell forms a heat storage chamber, and the temperature of the battery core is controlled within a certain range; the cell shell can be thermally managed by a thermal management device, and when the temperature is too low, heat is transferred to the cell through the cell shell.
Description
Technical Field
The utility model relates to a lithium ion battery heat-transfer device belongs to lithium ion battery and makes field
Background
Along with market development, industry requirements and national policy guidance, the requirements on the rate capability and the energy density of the power lithium ion battery are higher and higher. The development planning of the power battery is clarified according to 'Chinese manufacturing 2025': in 2020, the energy density of the battery reaches 300 Wh/kg; in 2025, the energy density of the battery reaches 400 Wh/kg; in 2030, the energy density of the battery reaches 500 Wh/kg. Soft package lithium ion batteries (polymer lithium ion batteries, liquid lithium ion batteries using aluminum plastic films as shells) are superior in energy density due to thin shells and light materials. However, the shell of the soft package polymer lithium ion battery is an aluminum plastic film, the outmost layer of the aluminum plastic film, the innermost layer of the aluminum plastic film and the inside binder layer of the aluminum plastic film are poor conductors of heat, the soft package battery is not beneficial to heat dissipation and heating, the heat management of a battery module and a battery system is not facilitated, the temperature field is not uniform, along with the increase of charging and discharging time, the temperature is higher and higher, the inconsistency of the battery is accelerated to be worsened, and the influence of the temperature to the service life and the safety of the battery system to a certain degree is larger.
Disclosure of Invention
The invention aims to establish a heat transfer channel which is directly communicated with a battery core shell from the inside of a battery core by adopting a solid-phase heat transfer medium, so as to realize active or passive heat management and further realize the highest, lowest and temperature field consistency of a lithium battery module.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a lithium ion battery heat-transfer device, includes electric core, electric core support, the utmost point ear and the cell shell of being connected with electric core, still includes the heat-conducting plate, the one end and the utmost point ear of heat-conducting plate are connected, and the other end and the cell shell of heat-conducting plate are connected, form heat conduction channel between electric core, utmost point ear, heat-conducting plate and the cell shell, the cell shell forms heat storage chamber as heat conduction terminal.
Preferably, the heat-conducting plate comprises a first heat-conducting plate and a second heat-conducting plate, the first heat-conducting plate connects adjacent tabs, one end of the second heat-conducting plate is connected with the first heat-conducting plate, and the other end of the second heat-conducting plate is connected with the cell shell.
Preferably, an electric heating device is installed on the outer side of the battery cell shell.
Preferably, the heat-conducting plate is a silica gel heat-conducting plate.
Preferably, the heat conducting plate is an insulated metal heat conducting plate.
Preferably, the electric heating device is one of resistance heating, induction heating, electron beam heating, infrared heating or medium heating.
Preferably, the heating end of the electric heating device is wrapped with high-temperature-resistant rubber.
Compared with the prior art, in the charging and discharging processes of the lithium battery module, heat generated on a pole piece and a diaphragm in a soft-packaged battery core is transferred to positive and negative electrode tabs through positive and negative electrode current collectors of the battery core, the heat on the positive and negative electrode tabs is transferred to a battery core shell through a heat conducting plate connected with the positive and negative electrode tabs and the heat conducting plate, the temperature field of the battery core in the whole module is rapidly balanced through reverse conduction of the battery core shell, the heat conducting plate is directly connected with the battery core shell, the shell forms a heat storage chamber, and the temperature of the battery core is controlled within a certain range; in order to prevent the temperature of the battery cell in the module from being too high or too low, the battery cell shell can be subjected to heat management by adopting a heat management device, and when the temperature of the battery cell is too high, namely the temperature of the battery cell shell is too high, heat is transferred out through the heat management device connected with the battery cell shell; in the same reason, when the temperature is too low, the heat management device transmits heat to the battery core shell, the shell transmits the heat to the positive and negative electrode lugs of the battery core through the heat conducting plate, and the positive and negative electrode lugs transmit the heat to the positive and negative electrode active substances, the electrolyte and the like in the battery core to realize temperature control.
Drawings
For further explanation of the invention, reference will now be made to the drawings and examples, which are set forth to illustrate, but are not to be construed to limit the invention.
FIG. 1 is a schematic side sectional view of the present invention.
FIG. 2 is a schematic top view of the cross-sectional structure of the present invention.
Detailed Description
As shown in fig. 1-2, a heat conduction device for a lithium ion battery comprises an electric core 1, an electric core support 2, a tab 3 connected with the electric core 1, and an electric core shell 4, and further comprises a heat conduction plate, wherein the heat conduction plate comprises a first heat conduction plate 5 and a second heat conduction plate 6, the first heat conduction plate 5 connects the adjacent tab 3, one end of the second heat conduction plate 6 is connected with the first heat conduction plate 5, the other end of the second heat conduction plate is connected with the electric core shell 4, a heat conduction channel is formed among the electric core 1, the tab 3, the heat conduction plates (5 and 6) and the electric core shell 4, and the electric core shell 4 forms a heat.
Preferably, an electric heating device (not shown) is installed outside the cell casing 4.
Preferably, the heat-conducting plates (5, 6) are silica gel heat-conducting plates.
Preferably, the heat-conducting plates (5, 6) are insulated metal heat-conducting plates.
Preferably, the electric heating device is one of resistance heating, induction heating, electron beam heating, infrared heating or medium heating.
Preferably, the heating end of the electric heating device is wrapped with high-temperature-resistant rubber.
It should be apparent that the above-described embodiment is merely an example of the present invention, and any simple modification of the structure or principle provided by the present invention is within the protection scope of the present invention.
Claims (7)
1. The utility model provides a lithium ion battery heat-transfer device, includes electric core, electric core support, the utmost point ear and the cell shell of being connected with electric core, its characterized in that still includes the heat-conducting plate, the one end and the utmost point ear of heat-conducting plate are connected, and the other end and the cell shell of heat-conducting plate are connected, form heat conduction channel between electric core, utmost point ear, heat-conducting plate and the cell shell, the cell shell forms the heat storage room as heat conduction terminal.
2. The heat conducting device of claim 1, wherein the heat conducting plate comprises a first heat conducting plate and a second heat conducting plate, the first heat conducting plate connects the adjacent tabs, one end of the second heat conducting plate is connected to the first heat conducting plate, and the other end of the second heat conducting plate is connected to the cell casing.
3. The heat conducting device for lithium ion batteries according to claim 1, wherein an electric heating device is installed outside the cell casing.
4. The heat conducting device of claim 1, wherein the heat conducting plate is a silica gel heat conducting plate.
5. The heat conducting device of claim 1, wherein the heat conducting plate is an insulated metal heat conducting plate.
6. The heat conducting device of claim 3, wherein the electrical heating device is one of resistance heating, induction heating, electron beam heating, infrared heating, or dielectric heating.
7. The heat conducting device for lithium ion batteries according to claim 3 or 6, wherein the heating end of the electric heating device is coated with high temperature resistant rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920058882.5U CN211455742U (en) | 2019-01-15 | 2019-01-15 | Lithium ion battery heat conduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920058882.5U CN211455742U (en) | 2019-01-15 | 2019-01-15 | Lithium ion battery heat conduction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211455742U true CN211455742U (en) | 2020-09-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920058882.5U Active CN211455742U (en) | 2019-01-15 | 2019-01-15 | Lithium ion battery heat conduction device |
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| Country | Link |
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| CN (1) | CN211455742U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109599521A (en) * | 2019-01-15 | 2019-04-09 | 遵化市清吉电池科技有限公司 | A kind of lithium ion battery heat-transfer device |
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2019
- 2019-01-15 CN CN201920058882.5U patent/CN211455742U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109599521A (en) * | 2019-01-15 | 2019-04-09 | 遵化市清吉电池科技有限公司 | A kind of lithium ion battery heat-transfer device |
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