CN217848081U - Battery module with improved heat pipe structure - Google Patents
Battery module with improved heat pipe structure Download PDFInfo
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- CN217848081U CN217848081U CN202221427063.1U CN202221427063U CN217848081U CN 217848081 U CN217848081 U CN 217848081U CN 202221427063 U CN202221427063 U CN 202221427063U CN 217848081 U CN217848081 U CN 217848081U
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- 230000005494 condensation Effects 0.000 claims abstract description 16
- 238000001704 evaporation Methods 0.000 claims abstract description 15
- 239000012530 fluid Substances 0.000 claims abstract description 15
- 230000008020 evaporation Effects 0.000 claims abstract description 14
- 230000002093 peripheral effect Effects 0.000 claims abstract description 6
- 238000005086 pumping Methods 0.000 claims abstract description 3
- 238000007664 blowing Methods 0.000 claims description 50
- 239000012782 phase change material Substances 0.000 claims description 17
- 230000017525 heat dissipation Effects 0.000 claims description 14
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- MHCVCKDNQYMGEX-UHFFFAOYSA-N 1,1'-biphenyl;phenoxybenzene Chemical compound C1=CC=CC=C1C1=CC=CC=C1.C=1C=CC=CC=1OC1=CC=CC=C1 MHCVCKDNQYMGEX-UHFFFAOYSA-N 0.000 description 1
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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 discloses a battery module with improvement type heat pipe structure. The battery module comprises a plurality of battery cores and a battery fixing frame for accommodating and fixing the battery cores. The improved heat pipe structure includes a metal pipe body, which defines a heat conduction section, a first container section and a first connection section. The heat conducting section is a vacuum-pumping sealed tube body, comprises a capillary structure inside, utilizes the evaporation and condensation of working fluid to convey heat, and is arranged above the battery fixing frame. The first container section is inserted in the interval kept between a plurality of adjacent battery cores and is used for storing heat generated by charging and discharging of the peripheral battery cores. The first connecting section is in a flat state, and one end of the first connecting section is connected with the first container section while the other end of the first connecting section vertically penetrates through the battery fixing frame and is connected to one end of the heat conducting section. Through the utility model discloses, the temperature between the battery core maintains thermal balance, causes to increase the security in the battery module uses.
Description
Technical Field
The present invention relates to a battery module, and more particularly to a battery module with improved heat pipe structure for heat dissipation or heat balance of battery cells
Background
In recent years, electric vehicles have been increasingly favored in response to the demand for environmental protection and carbon reduction. Many vehicle manufacturers are continuously entering the development of electric vehicles in order to gain business opportunities in the electric vehicle market. The power source of an electric vehicle is a battery, such as a lithium battery. In order to increase the endurance of the electric vehicle, a battery module having a considerable number of battery cells is generally disposed on the electric vehicle so as to provide sufficient power for the electric vehicle.
Fig. 1, 2 and 3 are a top view, a front view, a side view, and a cross-sectional view of a battery module according to the prior art. As shown in fig. 1, 2 and 3, the battery module 100 includes a housing 11, a plurality of battery cells 12, a first fixing frame 131 and a second fixing frame 132. The battery cells 12 are accommodated and fixed between the first fixing frame 131 and the second fixing frame 132, and the first fixing frame 131 and the second fixing frame 132 in which the battery cells 12 are arranged in the housing 11, so that the battery cells 12 and the first fixing frame 131 and the second fixing frame 132 are protected by the housing 11.
When the battery cells 12 of the battery module 100 are charged and discharged, heat is generated and the temperature rises. In order to dissipate heat generated by charging and discharging of the battery cell 12, an air blowing fan 151 and an air suction fan 153 are generally provided on both sides of the case 11. The first holder 131 and the second holder 132 accommodating the battery cells 12 are placed between the blowing fan 151 and the suction fan 153. The blowing fan 151 blows the cool air from the outside toward the position of the battery cell 12 inside the case 11, and the blown cool air passes through the heat-generating battery cell 12 and becomes hot air. Then, the hot air is extracted by the extraction fan 153 to be discharged to the outside, and the temperature of the battery cell 12 which generates heat by charging and discharging can be lowered by blowing the air by the blowing fan 151 and extracting the hot air by the extraction fan 153.
In addition, since the battery cells 12 are horizontally arranged at the same height between the first and second holders 131 and 132, most of the cold air blown by the blowing fan 151 is blocked by the battery cells 12 in the front row near the blowing fan 151, causing a high flow resistance, and only a small amount of the cold air can flow to the battery cells 12 in the rear row through the gaps between the battery cells 12 in the front row. In addition, in order to arrange a larger number of battery cells 12 in the limited space range of the first fixing frame 131 and the second fixing frame 132, the gaps between the arranged battery cells 12 are usually very small, which also causes a situation of high flow resistance, resulting in very poor circulation efficiency of the cold air between the battery cells 12. Accordingly, the cool air blown by the blowing fan 151 tends to flow only at a place with low flow resistance, for example, the cool air tends to blow toward the battery cells 12 near the front row of the blowing fan 151 and the outer sides of the first and second holders 131 and 132, and the rear row of the battery cells 12 farther from the blowing fan 151 or the battery cells 12 arranged at the inner side hardly receive the blow of the cool air.
For example, as shown in fig. 1, when the battery module 100 operates, the temperature sensors sense the temperatures of four regions a, B, C, D, etc., and the regions a, B, C, and D are arranged in sequence from near to far with reference to the position of the blowing fan 151. Through temperature sensing, the temperature around the battery cell 12 in the region a may be T1, the temperature around the battery cell 12 in the region B may be T2, the temperature around the battery cell 12 in the region C may be T3, and the temperature around the battery cell 12 in the region D may be T4. The sensed temperatures of the four regions can also be T4> T3> T2> T1. Accordingly, the ambient temperature T4 of the rear inner region D, which is farther from the air blowing fan 151, becomes higher than the ambient temperature of the other regions. Therefore, at the time of charging and discharging, the battery cells 12 farther from the air blowing fan 151 will have a higher temperature than the battery cells 12 closer to the air blowing fan 151. The battery cell at higher temperatures will have a faster aging rate, which in turn affects the service life of the battery cell 12.
In addition, since the cool air flows in from the blowing fan 151, the cool air exchanges heat with each of the battery cells 12 passing therethrough. The battery cell 12 located at the rear end of the wind receives the air that has undergone heat exchange at the front end battery cell 12. Therefore, the temperature of each battery cell 12 in the entire battery module 100 becomes higher and higher depending on the distance from the position of the blowing fan 151, and the battery cells 12 located at the rear end in the wind are aged at a much higher rate than the battery cells 12 located at the front end in the wind direction.
SUMMERY OF THE UTILITY MODEL
Based on the technical problem in the prior art, the present invention provides a battery module with an improved heat pipe structure. The battery module comprises a shell, a battery fixing frame, a plurality of battery cores and an improved heat pipe structure. One side of the inside of the shell is provided with an air blowing opening, and the other side of the inside of the shell is provided with an air suction opening. The battery fixing frame is arranged between the air blowing opening and the air suction opening of the shell in a swinging mode and used for containing and fixing the plurality of battery cores. The improved heat pipe structure includes a metal pipe body, which defines a heat conduction section, a first container section and a first connection section. The heat conduction section is arranged above the battery fixing frame, and the first container section is inserted in an interval kept between a plurality of adjacent battery cores far away from the air blowing opening and connected with the heat conduction section through the first connecting section. When the battery module operates, the first container section absorbs heat generated by charging and discharging of the surrounding battery cores, the first connecting section is used for conducting heat to the heat conducting section, and then the phase change process of evaporation and condensation of the working fluid is repeatedly circulated in the heat conducting section, so that the heat generated by charging and discharging of the surrounding battery cores of the first container section can be taken away, and the surrounding battery cores of the first container section can be effectively radiated.
Preferably, the evaporation end of the heat conduction section is connected with the first connection section, the condensation end of the heat conduction section is connected with the heat dissipation fins, and the heat transferred on the heat conduction section can be dissipated through the heat dissipation fins; preferably, the heat dissipation fins are arranged beside the blowing device to blow air through the blowing device, so as to improve the heat dissipation effect of the heat dissipation fins.
Preferably, the metal tube body of the improved heat pipe structure further defines a second container section and a second connecting section. The second container section is provided in an interval maintained between a plurality of adjacent battery cells located closer to the air blowing port, and is connected to the condensation end of the heat conduction section through a second connection section. The heat generated by charging and discharging the battery core around the first container section is transmitted to the battery core around the second container section through the heat conduction of the first container section, the first connecting section, the heat conducting section, the second connecting section and the second container section. Therefore, through the improved heat pipe structure, the heat generated by charging and discharging of the battery core which is positioned at the rear end of the wind and has higher temperature can be transmitted to the battery core which is positioned at the front end of the wind and has lower temperature, so that the temperature among the battery cores can maintain thermal balance, and the risk of damage or explosion caused by overheating when part of the battery cores are charged and discharged is avoided, thereby increasing the use safety of the battery module.
To achieve the above objects, the present invention discloses a battery module with an improved heat pipe structure, including: a plurality of battery cells; the battery fixing frame is used for accommodating and fixing a plurality of battery cores; and at least one improved heat pipe structure comprising a metal pipe body. The metal pipe body is defined with: the heat conduction section is a vacuum-pumping sealing tube body, the inside of the heat conduction section comprises a capillary structure, heat is conveyed by utilizing the evaporation and condensation of working fluid, and the heat conduction section is arranged above the battery fixing frame; a first container section inserted in the space between the adjacent battery cells and used for storing heat generated by charging and discharging the peripheral battery cells; and a first connection section in a flat state, one end of which is connected to the first container section and the other end of which is connected to one end of the heat conduction section vertically passing through the battery holder; wherein battery module still includes the casing, and the inside one side of casing is equipped with the mouth of blowing and the opposite side is equipped with the suction opening, and the battery mount sets up between mouth of blowing and suction opening, and the one end of thermal conduction section is connected and is established in the position of being far away from the mouth of blowing with the one end of first linkage segment, and the other end is established in the position of being near apart from the mouth of blowing.
Preferably, the first container section is provided in a space maintained between a plurality of adjacent battery cells located farther from the air blowing port.
Further, an embodiment of the present invention further includes a heat dissipation fin, and the other end of the heat conduction section is connected to the heat dissipation fin.
Preferably, the heat dissipation fins are arranged beside the air blowing port.
Preferably, the metal pipe further defines a second container section and a second connection section, the second connection section is inserted into a space maintained between a plurality of adjacent battery cells located at a position closer to the air blowing port and is used for storing heat generated by charging and discharging of the peripheral battery cells, one end of the second connection section is connected to the second container section, and the other end of the second connection section vertically penetrates through the battery fixing frame and is connected to the other end of the heat conduction section.
Preferably, the air blowing opening is provided on the air blowing device, and the air suction opening is provided on the air suction device.
Preferably, the first container section or the second container section is filled with a phase change material, and the phase change material stores heat generated by charging and discharging of the peripheral battery cells.
Preferably, the first container section or the second container section is provided with a metal foam or a metal fin inside in addition to the phase change material.
Preferably, the first container section or the second container section is internally provided with a metal rod respectively, and the metal rod stores heat generated by charging and discharging of the peripheral battery core.
Preferably, the metal tube of the first vessel section is provided with a cut, a valve, or a notch.
Drawings
Fig. 1 is a top sectional view of a prior art battery module disposed in a case.
Fig. 2 is an elevational sectional view of a prior art battery module disposed in a housing.
Fig. 3 is a side sectional view of a prior art battery module disposed in a housing.
Fig. 4 is a top sectional view of an embodiment of the battery module of the present invention.
Fig. 5 is an elevational sectional view of an embodiment of the battery module of the present invention.
Fig. 6 is a cross-sectional view of the heat conducting section of the improved heat pipe structure of the present invention.
Figure 7 is a block diagram of one embodiment of a first vessel section of an improved heat pipe construction of the present invention.
Figure 8 is a block diagram of yet another embodiment of the first container section of the improved heat pipe construction of the present invention.
Figure 9 is a block diagram of yet another embodiment of the first container section of the improved heat pipe construction of the present invention.
Fig. 10 is a top sectional view of another embodiment of the battery module of the present invention.
Fig. 11 is a front sectional view of another embodiment of the battery module of the present invention.
Description of reference numerals: 100-a battery module; 11-a housing; 12-a battery cell; 131-a first mount; 132-a second mount; 151-a blower fan; 153-suction fan; 300-a battery module; 31-a housing; 32-a battery cell; 33-a battery holder; 331-a first mount; 332-a second mount; 351-air blowing means; 353-an air draft device; 37-heat dissipation fins; 50-a metal tube body; 501-cutting marks; 51-a thermally conductive section; 512-capillary structure; 513-a working fluid; 514-evaporation end; 515-condensation end; 52-a first vessel section; 521-a phase change material; 522-metal foam; 523-metal cylinder; 53-first connection segment; 54-a second vessel section; 541-phase change material; 55-second connecting section.
Detailed Description
Please refer to fig. 4, fig. 5 and fig. 6, which are a schematic top view, a sectional front view and a sectional structure diagram of a heat pipe according to an embodiment of the present invention. As shown in fig. 4 and 5, the battery module 300 of the present invention includes a housing 31, a plurality of battery cells 32, and a battery holder 33. A blowing device 351 having a blowing port is provided at one side of the inside of the case 31, and an exhausting device 353 having an exhausting port is provided at the other side. During the charge and discharge of the battery module 300, cold air enters the inside of the case 31 from the blowing port of the blowing device 351, and hot air is drawn out from the suction port of the air draft device 353.
The battery holder 33 includes a first holder 331 and a second holder 332. The first holder 331 and the second holder 332 respectively include sleeves (not shown). The upper end of each battery cell 32 is sleeved in the sleeve of the first fixing frame 331, and the lower end is sleeved in the sleeve of the second fixing frame 332, so that each battery cell 32 can be fixed between the first fixing frame 331 and the second fixing frame 332 and each battery cell 32 keeps a space.
The battery module 300 of the present invention has an improved heat pipe structure. The improved heat pipe structure includes a metal pipe body 50, such as a copper pipe. The metal tube 50 defines a heat conducting section 51, a first container section 52 and a first connecting section 53. As shown in fig. 6, the thermal conductive section 51 is a vacuum-pumped sealed tube, and the tube 50 includes a capillary structure 512 and a working fluid 513, such as water or dowtherm tm-a, sealed inside the tube. One end of the heat conducting section 51 may also be referred to as an evaporation end (heated end) 514, and the other end may also be referred to as a condensation end (cooled end) 515. The first container section 52 is also a sealed tube with a heat storage disposed within the tube. As shown in fig. 7, in one embodiment of the present invention, the thermal storage material is a phase change material 521 (such as water, polyethylene glycol, low density polyethylene, polyethylene or paraffin); furthermore, if the thermal storage material filled inside the first container section 52 is the phase change material 521, a metal foam 522 or a metal fin may be further disposed to increase the thermal conductivity inside the container section 52. As shown in fig. 8, if the phase change material 521 is water, a cut 501, a valve or a notch may be added on the metal tube 50, so that the metal tube 50 may be damaged when the battery core 32 around the first container section 52 is in thermal runaway, and the phase change material 521 can be sprayed or flowed to the battery core 32 to reduce the linkage failure of the thermal runaway. Alternatively, in another embodiment of the present invention, as shown in fig. 9, the heat storage material may be a metal cylinder 523, so that the metal cylinder 523 is used as a heat collecting device. In addition, the first connecting section 53 is a flat shape, and is made of the metal tube 50 by a pressing process.
The heat conducting section 51 is disposed on the first holder 331 of the battery holder 33. The first container section 52 is disposed in the space maintained between the plurality of adjacent battery cells 32. Further, the battery cell 32 farther from the air outlet is often in a higher temperature state during charging and discharging; therefore, preferably, the first container section 52 will be disposed in the space maintained between the plurality of adjacent battery cells 32 located farther from the air blowing port. Furthermore, the thermally conductive section 51 is connected to the first container section 52 by a first connecting section 53. The first connection section 53 has one end connected to the first container section 52 and the other end perpendicularly penetrating the first holder 331 of the battery holder 33 to be connected to the evaporation end 514 of the heat conduction section 51.
Specifically, as shown in fig. 4, 5 and 6, when the battery module 300 operates, the first container section 52 absorbs heat generated by the charging and discharging of the surrounding battery core 32, and stores energy which is not much dissipated on the phase change material 521 or the metal column 523 inside the first container section 52. The heat absorbed by the first container section 52 is conducted to the evaporation end 514 of the thermally conductive section 51 through the first connecting section 53. The working fluid 513 on the evaporation end 51 absorbs heat and changes phase to rapidly transfer the heat to the condensation end 515 in a vapor flow manner. After the working fluid 513 transfers heat to the condensation end 515 in the form of a vapor flow, the heat will release heat at the condensation end 515 and the working fluid 513 will condense. The condensed working fluid 513 is re-transported in a liquid flow manner back to the evaporation end 514 by the capillary action of the capillary structure 512. Then, the working fluid 513 inside the thermal conductive section 51 repeatedly undergoes phase change of evaporation and condensation, and the heat generated by charging and discharging of the battery core 32 far from the air blowing port can be effectively taken away by the improved thermal conductive pipe structure, thereby achieving the purpose of temperature reduction.
The battery module 300 further includes heat dissipation fins 37. The condensation end 515 of the thermal conductive section 51 is connected to the heat dissipation fins 37 so that the heat transferred on the thermal conductive section 51 is dissipated through the heat dissipation fins 37. Preferably, the heat sink fins 37 are disposed beside the blowing device 351, and the blowing device 351 blows air to the heat sink fins 37, so as to improve the heat dissipation effect of the heat sink fins 37.
Referring to fig. 10 and 11, a top view and a front view of another embodiment of the battery module of the present invention are respectively shown, and fig. 6 is also shown. As shown in fig. 10 and 11, the metal tube 50 of the improved heat pipe structure of the battery module 301 of the present embodiment further includes a second container section 54 and a second connecting section 55. The second container section 54 is also a sealed tube and the inside of the tube is filled with phase change material 521 and metal foam 52241 or provided with a metal cylinder 523. The second connecting section 55 is flat and is made of the metal tube 50 by a press-fitting process.
In the present embodiment, the second container section 54 is provided in the space maintained between the plurality of adjacent battery cells 32 that are located closer to the air blowing port. Further, the thermally conductive section 51 is connected to the second container section 54 by a second connecting section 55. One end of the second connection section 55 is connected to the second container section 54, and the other end is connected to the condensation end 515 of the heat conduction section 51 vertically passing through the first holder 331 of the battery holder 33.
As shown in fig. 6, 10 and 11, when the battery module 301 is operated, the first container section 52 absorbs heat generated by charging and discharging the surrounding battery core 32, and stores energy which is not much dissipated on the phase change material 521 or the metal rod inside the first container section 52. The heat absorbed by the first container section 52 is conducted to the evaporation end 514 of the thermally conductive section 51 through the first connecting section 53. The working fluid 513 on the evaporation end 51 absorbs heat and changes phase to rapidly transfer the heat to the condensation end 515 in a vapor flow manner. After the working fluid 513 transfers heat to the condensation end 515 in the form of vapor flow, the heat will be conducted to the second container section 54 through the second connection section 55, so as to absorb the heat by the second container section 54 and store the heat on the phase change material 541 or the metal rod. The heat of the working fluid 513 on the condensation end 515 absorbed by the second container section 54 is condensed to change from vapor state to liquid state, and the condensed liquid working fluid 513 is re-transported back to the evaporation end 514 in a liquid flow manner by the capillary action of the capillary structure 512. By arranging the improved heat pipe structure, the heat generated by the battery core 32 farther from the air outlet can be transferred to the battery core 32 closer to the air outlet, so that the temperature of the battery cores 32 can be balanced thermally.
Herein, by the arrangement of the first container section 52, the first connection section 53, the heat conduction section 51, the second connection section 55 and the second container section 54, the battery core 32 located at the rear end of the wind direction and having a higher temperature can transmit heat to the battery core 32 located at the front end of the wind direction and having a lower temperature through the first container section 52, the first connection section 53, the heat conduction section 51, the second connection section 55 and the second container section 54, so that the temperature among the battery cores 32 can be maintained in thermal balance, thereby avoiding the risk of damage or explosion caused by overheating during charging and discharging of part of the battery cores 32 and increasing the safety of the battery module 301 in use.
The above-mentioned embodiments are only preferred embodiments of the present invention, and should not be used to limit the scope of the claimed invention, i.e. all equivalent changes and modifications of the shape, structure, characteristics and spirit of the claims of the present invention should be included in the scope of the claims of the present invention.
Claims (12)
1. A battery module with an improved heat pipe structure is characterized by comprising:
a plurality of battery cells;
the battery fixing frame is used for accommodating and fixing the plurality of battery cores; and
at least one improved heat pipe structure comprises a metal pipe body;
wherein the metal pipe body is defined with:
the heat conduction section is a vacuum-pumping sealing tube body, comprises a capillary structure inside, and utilizes the evaporation and condensation of working fluid to convey heat, and is arranged above the battery fixing frame;
the first container section is inserted into the intervals kept between the adjacent battery cores and is used for storing heat generated by charging and discharging of the battery cores at the periphery; and
and a first connection section in a flat state, one end of which is connected to the first container section and the other end of which is connected to one end of the heat conduction section vertically passing through the battery holder.
2. The battery module of claim 1, further comprising a housing, wherein a blowing port is formed at one side of the interior of the housing, and an air suction port is formed at the other side of the interior of the housing, the battery holder is disposed between the blowing port and the air suction port, one end of the heat conduction section is connected to one end of the first connection section and is disposed at a position far from the blowing port, the other end of the heat conduction section is disposed at a position near the blowing port, and the other end of the heat conduction section is connected to a heat dissipation fin disposed beside the blowing port.
3. The battery module according to claim 2, wherein the first container section is provided in a space maintained between a plurality of adjacent battery cells located farther from the air blowing port.
4. The battery module as set forth in claim 3, wherein the metal tube further defines a second container section and a second connection section, the second connection section is inserted into a space between a plurality of adjacent battery cells located near the air blowing port and stores heat generated by charging and discharging the peripheral battery cells, one end of the second connection section is connected to the second container section, and the other end of the second connection section vertically penetrates through the battery holder and is connected to the other end of the heat conduction section.
5. The battery module according to claim 2, wherein the air blowing opening is provided on an air blowing device, and the air suction opening is provided on an air suction device.
6. The battery module according to claim 1, wherein the first container section is filled with a phase change material inside thereof, and stores heat generated by charging and discharging the battery cells at the periphery thereof through the phase change material.
7. The battery module of claim 6, wherein the interior of the first container section is further provided with a metal foam or metal fins.
8. The battery module according to claim 4, wherein the first container section and the second container section are filled with a phase change material, and the phase change material stores heat generated by charging and discharging the battery cells at the periphery.
9. The battery module of claim 8, wherein the first and second container sections are further provided with a metal foam or a metal fin inside.
10. The battery module according to claim 1, wherein a metal rod is provided inside the first container section, and heat generated by charging and discharging the battery cells at the periphery is stored by the metal rod.
11. The battery module according to claim 4, wherein metal rods are disposed inside the first container section and the second container section, respectively, and the metal rods store heat generated by charging and discharging the battery cells at the periphery.
12. The battery module of claim 6, wherein a cut, valve, or notch is provided in the metal tube body of the first container section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221427063.1U CN217848081U (en) | 2022-06-08 | 2022-06-08 | Battery module with improved heat pipe structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221427063.1U CN217848081U (en) | 2022-06-08 | 2022-06-08 | Battery module with improved heat pipe structure |
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| Publication Number | Publication Date |
|---|---|
| CN217848081U true CN217848081U (en) | 2022-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221427063.1U Active CN217848081U (en) | 2022-06-08 | 2022-06-08 | Battery module with improved heat pipe structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217848081U (en) |
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2022
- 2022-06-08 CN CN202221427063.1U patent/CN217848081U/en active Active
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