CN214477699U - Uniform-temperature flame-retardant lithium battery module - Google Patents
Uniform-temperature flame-retardant lithium battery module Download PDFInfo
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- CN214477699U CN214477699U CN202120332049.2U CN202120332049U CN214477699U CN 214477699 U CN214477699 U CN 214477699U CN 202120332049 U CN202120332049 U CN 202120332049U CN 214477699 U CN214477699 U CN 214477699U
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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
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- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a fire-retardant lithium battery module of samming, including heat diffusion barrier (2), lithium cell electricity core (3), electric core heat diffusion barrier (4) between a plurality of electric core rows (1), electric core row and the electric core row. The heat diffusion preventing partition plate (2) is arranged between the adjacent battery cell rows in the battery cell rows (1), each battery cell row (1) is composed of a plurality of lithium battery cells (3), the heat diffusion preventing partition plate (4) is also arranged between the lithium battery cells (3) and the lithium battery cells (3), the problem of thermal runaway after single or multiple lithium battery cells are failed can be effectively solved, and accident influence and loss are reduced to the minimum.
Description
Technical Field
The utility model relates to a lithium ion battery energy storage module's technical field especially relates to a fire-retardant lithium battery module of samming, and it is the lithium ion battery module who contains phase transition control by temperature change subrack and heat diffusion proof baffle.
Background
The lithium ion battery is widely applied to electric power, electric vehicles and other related equipment as a main electric energy storage mode at present, and the adopted lithium ion battery mainly comprises a lithium iron phosphate battery, a lithium cobalt oxide battery, a nickel cobalt manganese battery, a nickel cobalt aluminum battery, a lithium titanate battery, a lithium manganate battery and the like. Lithium ion battery cells are generally combined into battery modules through series-parallel connection, and the battery modules are configured with a battery management system BMS and then are combined into battery modules which are relatively independent in function, and the battery modules are generally assembled in a plug box. The lithium ion battery system is sensitive to temperature, and thermal runaway is easily caused due to overhigh temperature, so that ignition, combustion and explosion are caused, and lithium dendrite is easily caused by charging of the lithium battery at low temperature to cause internal short circuit. Therefore, ensuring the temperature of the lithium ion battery in the whole life cycle is in a reasonable range is an important measure for avoiding fire and explosion. The conventional lithium battery module plug-in box is generally designed with natural cooling, forced air cooling or water cooling measures. However, a large amount of actual operation data show that the cooling mode hardly achieves the design effect, and the cooling mode has poor effects on battery temperature rise, especially on the aspect of battery temperature difference control, especially under severe environmental conditions and under heavy-current charging and discharging application conditions.
In addition, from the lithium ion battery fire and explosion accident, the single battery in the module is always in failure and thermal runaway occurs, and heat generated by the thermal runaway of the single battery is transferred to the adjacent battery, so that chain reaction is caused, and the whole battery system is completely burnt. Therefore, it is necessary to take a targeted measure in module design to suppress heat propagation between cells, to limit the thermal runaway cell and its influence to the minimum, and to minimize the accident influence and loss.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems existing in the prior art, the utility model provides a fire-retardant lithium battery module of samming.
The utility model adopts the technical proposal that: the utility model provides a fire-retardant lithium battery module of samming, includes that a plurality of electric cores are arranged, electric core row and electric core arrange between the thermal diffusion barrier of preventing, lithium cell electric core and electric core thermal diffusion barrier of preventing, exist between the adjacent row electric core in a plurality of electric core rows electric core arrange and electric core arrange between the thermal diffusion barrier of preventing, every electric core row comprises a plurality of lithium cell electric cores, also exists between lithium cell electric core and the lithium cell electric core thermal diffusion barrier of preventing of electric core, can effectively solve the thermal runaway problem behind single or a plurality of lithium cell electric core trouble, make accident influence and loss reduce to the minimum.
Furthermore, the heat diffusion preventing partition plates between the battery cell rows and the battery cell heat diffusion preventing partition plates comprise heat diffusion preventing partition plates, coatings and connecting fixed contacts; the heat diffusion preventing partition board is fixed in the battery module, coatings are arranged on two sides of the heat diffusion preventing partition board, and a connecting fixed contact is arranged above and below the heat diffusion preventing partition board respectively to play a role in connecting and fixing the battery cells; the battery module is formed by connecting a plurality of lithium battery cells in series and in parallel, a gap is formed between every two adjacent lithium battery cells, and a heat diffusion preventing partition plate is arranged between every two adjacent lithium battery cells in the module; fins are arranged on the other five surfaces of the radiator shell in the cooler except the bottom, and can accelerate the diffusion of heat; the top of the interior of the radiator shell is also provided with a water-cooling coil pipe and a pressure sensor, cooling liquid flows through the water-cooling coil pipe to take away heat generated by the lithium battery module, and the pressure sensor measures the pressure in the cooler; the cooler is also filled with cooling liquid and is provided with a liquid level sensor which can monitor the liquid level of the cooling liquid in the cooler; the battery module is soaked in the cooler, each battery cell is provided with a temperature sensor, the cooling liquid is also provided with a temperature sensor, and the temperature of the battery cell and the temperature of the cooling liquid can be monitored in real time; the outside of the whole system is sleeved with a flow guide sleeve for protecting.
The utility model provides a fire-retardant lithium battery module of samming, includes lithium battery module, battery management system BMS and cooler, lithium battery module includes lithium cell electricity core, mechanical support, and mechanical support between the lithium cell electricity core adopts the thermal diffusion barrier that prevents, and the cooler is sealed, can fill liquid-gaseous phase change cooling medium, and the top is equipped with the relief valve, and affiliated battery management system BMS can monitor the voltage, temperature, the electric current data of each electricity core to and the inside temperature of cooler, pressure data.
Further, a partition plate is arranged between adjacent battery cells of the lithium battery module to keep a space and facilitate free flow of a cooling medium.
Furthermore, a condensation pipe is arranged at the top of the battery module cooler, and radiating fins are arranged on the top, the left side, the right side, the front side and the rear side of the battery module cooler.
Further, the battery module is electrically and communicatively connected with the outside through the aviation plug.
Furthermore, the thermal diffusion preventing partition plate of the lithium battery module adopts thermal insulation materials such as aramid fiber or glass fiber.
Further, the lithium battery module is fixedly connected with the battery module plug-in box through bolts, rivets and the like.
Further, the lithium battery module cooler is filled with a liquid-gas phase change cooling medium.
Further, a pressure release valve is arranged at the top of the lithium battery module cooler, and the pressure release valve is opened to release pressure when the pressure in the box exceeds a threshold value.
Compared with the prior art, the utility model the advantage lie in:
the existing lithium battery module generally adopts cooling measures such as natural cooling, forced air cooling or water cooling, but has poor effect on battery temperature difference control, especially severe environmental conditions and large-current charging and discharging application conditions. The invention adopts a temperature-equalizing flame-retardant lithium battery module structure, which can prevent heat generated by thermal runaway of a single or a plurality of battery cells from being transferred to adjacent batteries, thereby avoiding the occurrence of chain reaction, inhibiting the thermal propagation among the battery cells and limiting the thermal runaway battery cells and the influence thereof in the minimum range.
Drawings
Fig. 1 is a lithium battery module in which 1-cell rows; 2-a heat diffusion preventing partition plate between the battery cell rows; 3-a lithium battery cell; 4-cell heat diffusion resistant partition board;
FIG. 2 is a cross-sectional view of a thermal diffusion barrier, wherein 21-the thermal diffusion barrier; 22-coating; 23-connecting fixed contacts;
FIG. 3 is a cross-sectional view of a lithium battery module, wherein 31-the heat sink housing; 32-water-cooled coil pipes; 33-a flow guide sleeve; 34-a cooling liquid; 3-a lithium battery cell; 36-a pressure sensor; 37-a temperature sensor; 38-a liquid level sensor; 21-a thermal diffusion barrier; 22-coating;
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description.
Example 1
As shown in fig. 1, the utility model relates to a fire-retardant lithium battery module of samming, including a plurality of electric core row 1, electric core row and electric core arrange between thermal diffusion barrier 2, lithium cell electricity core 3, electric core thermal diffusion barrier 4. The heat diffusion preventing partition plates 2 between the battery cell rows and the battery cell rows are arranged between adjacent battery cells in the battery cell rows 1, each battery cell row 1 is composed of a plurality of lithium battery cells 3, and the heat diffusion preventing partition plates 4 of the battery cells are also arranged between the lithium battery cells 3 and the lithium battery cells 3, so that the problem of thermal runaway after single or multiple battery cell faults can be effectively solved, and the accident influence and loss are reduced to the minimum.
As shown in fig. 1 and fig. 2, each of the cell row-to-row heat diffusion preventing separators 2 and the cell heat diffusion preventing separators 4 includes a heat diffusion preventing separator 21, a coating layer 22, and a connecting fixed contact 23. In fig. 2, the heat diffusion preventing partition 21 is fixed in the battery module, and has coatings 22 on both sides and a connecting fixed contact 23 on the upper and lower sides, respectively, for connecting and fixing the cells.
Referring to fig. 3, a cross-sectional view of the cooling system of the lithium battery module in fig. 3 (mainly showing the arrangement and layout of the parts of the phase-change cooling on the box structure), the specific dimensions of the battery and the cooler are as shown in fig. 3. Fins are arranged on the other five surfaces of the radiator shell 31 in the cooler except the bottom, and can accelerate the heat diffusion; the top inside the radiator shell 31 is also provided with a water-cooling coil 32 and a pressure sensor 36, cooling liquid flows through the water-cooling coil 32 to take away heat generated by the lithium battery module, and the pressure sensor 36 measures the pressure in the cooler; the cooler is also filled with cooling liquid 34 and is provided with a liquid level sensor 38 which can monitor the liquid level of the cooling liquid 34 in the cooler; the battery module is soaked in the cooler, each battery cell is provided with a temperature acquisition point 37, the cooling liquid is also provided with the temperature acquisition points 37, and the temperature of the battery cell and the temperature of the cooling liquid can be monitored in real time; the outside of the whole system is sleeved with a guide sleeve 33 for protection.
The battery module is formed by connecting a plurality of lithium battery electric cores 3 in series and parallel, and a gap is formed between the adjacent lithium battery electric cores 3. A thermal diffusion preventing partition plate 21 is arranged between the adjacent lithium battery cells 3 of the module, so that when one or more lithium battery cells 3 are in failure or thermal runaway, heat and the like are prevented from being transferred to the adjacent lithium battery cells 3; the battery module is soaked in the cooler, whether cooling liquid in the cooler is sufficient can be observed through the liquid level sensor 38, heat generated in the operation process of the battery module is transmitted to the cooling liquid and taken away through cold water in the water-cooling coil at the top end, the pressure sensor 36 is arranged in the cooler, and when the pressure in the cooler is too high, the pressure release valve is opened to release the pressure; a plurality of temperature sensors 37 are arranged in the cooling system, and can collect the temperature of each battery cell, the whole module and the cooling liquid and transmit the temperature to an upper computer through a communication line. In addition, due to the existence of the fins, the cooling system can be used for cooling, and the heat dissipation of the battery module is greatly increased.
Example 2
The utility model provides a fire-retardant lithium battery module of samming, includes lithium battery module, battery management system BMS and cooler, lithium battery module includes lithium cell electricity core, mechanical support, and mechanical support between the lithium cell electricity core adopts the thermal diffusion barrier that prevents, and the cooler is sealed, can fill liquid-gaseous phase change cooling medium, and the top is equipped with the relief valve, and affiliated battery management system BMS can monitor the voltage, temperature, the electric current data of each electricity core to and the inside temperature of cooler, pressure data. And a partition plate is arranged between adjacent electric cores of the lithium battery module so as to keep a space and facilitate free flow of a cooling medium. The top of the battery module cooler is provided with a condenser pipe, and the top, the left side, the right side, the front side and the rear side of the battery module cooler are provided with radiating fins. The battery module is electrically and communicatively connected with the outside through the aviation plug. The heat diffusion preventing partition plate of the lithium battery module adopts heat insulating materials such as aramid fiber or glass fiber. The lithium battery module is fixedly connected with the battery module plug-in box through bolts, rivets and the like. The lithium battery module cooler is filled with liquid-gas phase change cooling media. A pressure release valve is arranged at the top of the lithium battery module cooler, and the pressure release valve is opened to release pressure when the pressure in the box exceeds a threshold value.
Claims (10)
1. The utility model provides a fire-retardant lithium battery module of samming which characterized in that: the battery comprises a plurality of battery cell rows (1), a heat diffusion preventing partition plate structure (2) between the battery cell rows and battery cell rows, a lithium battery cell (3) and a battery cell heat diffusion preventing partition plate structure (4), wherein the heat diffusion preventing partition plate structure (2) between the battery cell rows and the battery cell rows exists between adjacent rows of battery cells in the battery cell rows (1), each battery cell row (1) is composed of a plurality of lithium battery cells (3), and the heat diffusion preventing partition plate structure (4) between the lithium battery cells (3) and the lithium battery cells (3) also exists.
2. The temperature-equalizing flame-retardant lithium battery module as claimed in claim 1, wherein: the heat diffusion preventing partition plate structure (2) and the cell heat diffusion preventing partition plate structure (4) between the cell rows comprise heat diffusion preventing partition plates (21), coatings (22) and connecting fixed contacts (23); the heat diffusion preventing partition plate (21) is fixed in the battery module, coatings (22) are arranged on two sides of the heat diffusion preventing partition plate, and a connecting fixed contact (23) is arranged above and below the heat diffusion preventing partition plate respectively to achieve the effect of mutually connecting and fixing the battery cells; the battery module is formed by connecting a plurality of lithium battery cells (3) in series and in parallel, a gap is formed between every two adjacent lithium battery cells (3), and a heat diffusion preventing partition plate (21) is arranged between every two adjacent lithium battery cells (3) in the module; fins are arranged on the other five surfaces of the radiator shell (31) in the cooler except the bottom, and can accelerate the heat diffusion; the top inside the radiator shell (31) is also provided with a water-cooling coil (32) and a pressure sensor (36), cooling liquid flows through the water-cooling coil (32) to take away heat generated by the lithium battery module, and the pressure sensor (36) measures the pressure in the cooler; the cooler is also filled with cooling liquid (34), and a liquid level sensor (38) is arranged in the cooler and can monitor the liquid level of the cooling liquid (34) in the cooler; the battery module is soaked in the cooler, each battery core is provided with a temperature sensor (37), the cooling liquid is also provided with a temperature sensor (37), and the temperature of the battery core and the temperature of the cooling liquid can be monitored in real time; the outside of the whole system is sleeved with a guide sleeve (33) for protection.
3. The utility model provides a fire-retardant lithium battery module of samming which characterized in that: including lithium battery module, battery management system BMS and cooler, lithium battery module includes lithium cell electricity core (3), mechanical support, and mechanical support between lithium cell electricity core (3) adopts electric core solar heat protection diffusion barrier structure (4), and the cooler is sealed, can fill liquid-gaseous phase change cooling medium, and the top is equipped with the relief valve, and affiliated battery management system BMS can monitor the voltage, temperature, the current data of each electric core to and the inside temperature of cooler, pressure data.
4. The temperature-equalizing flame-retardant lithium battery module as claimed in claim 3, wherein: an electric core heat diffusion preventing partition plate structure (4) is arranged between adjacent lithium battery electric cores (3) of the lithium battery module so as to leave intervals and facilitate free flow of cooling media.
5. The temperature-equalizing flame-retardant lithium battery module as claimed in claim 3, wherein: the top of the battery module cooler is provided with a condenser pipe, and the top, the left side, the right side, the front side and the rear side of the battery module cooler are provided with radiating fins.
6. The temperature-equalizing flame-retardant lithium battery module as claimed in claim 3, wherein: the battery module is electrically and communicatively connected with the outside through the aviation plug.
7. The temperature-equalizing flame-retardant lithium battery module as claimed in claim 3, wherein: the thermal diffusion preventing partition plate of the lithium battery module adopts aramid fiber or glass fiber thermal insulation materials.
8. The temperature-equalizing flame-retardant lithium battery module as claimed in claim 3, wherein: the lithium battery module is fixedly connected with the battery module cooler through bolts and rivets.
9. The temperature-equalizing flame-retardant lithium battery module as claimed in claim 3, wherein: the lithium battery module cooler is filled with liquid-gas phase change cooling media.
10. The temperature-equalizing flame-retardant lithium battery module as claimed in claim 3, wherein: a pressure release valve is arranged at the top of the lithium battery module cooler, and the pressure release valve is opened to release pressure when the pressure in the box exceeds a threshold value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120332049.2U CN214477699U (en) | 2021-02-05 | 2021-02-05 | Uniform-temperature flame-retardant lithium battery module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120332049.2U CN214477699U (en) | 2021-02-05 | 2021-02-05 | Uniform-temperature flame-retardant lithium battery module |
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| CN214477699U true CN214477699U (en) | 2021-10-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115621650A (en) * | 2022-12-02 | 2023-01-17 | 北京艺玺科技有限公司 | Solid-state battery module safety protection structure |
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- 2021-02-05 CN CN202120332049.2U patent/CN214477699U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115621650A (en) * | 2022-12-02 | 2023-01-17 | 北京艺玺科技有限公司 | Solid-state battery module safety protection structure |
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