CN216488303U - Battery module with heat conduction buffer structure - Google Patents
Battery module with heat conduction buffer structure Download PDFInfo
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- CN216488303U CN216488303U CN202121322902.9U CN202121322902U CN216488303U CN 216488303 U CN216488303 U CN 216488303U CN 202121322902 U CN202121322902 U CN 202121322902U CN 216488303 U CN216488303 U CN 216488303U
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- battery module
- battery
- heat conductive
- buffer structure
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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 a heat conduction buffer structure, which comprises a battery module main body and a heat conductor, wherein the heat conductor is arranged on the battery module main body; the battery module main body comprises a plurality of electric cores arranged in parallel and two end plates; the two end plates are respectively positioned at the left side and the right side of the battery module main body; the upper end and the lower end of the peripheral side surface of the battery module main body are respectively and circularly sleeved with a packing belt; a heat insulation sheet is vertically distributed between each end plate and the adjacent battery cell; a reserved gap is formed between the side surfaces of any two adjacent battery cells respectively; the upper part of the heat conductor is inserted into all the gaps and used for radiating the side surface of the battery cell; the lower part of the heat conductor is bonded with the bottom surfaces of all the battery cores through heat conducting glue and used for conducting heat conduction at the bottoms of the battery cores. The utility model has scientific structural design, can solve the problems of cooling and temperature equalization of the battery module, can also solve the problem of expansive force generated by expansion of the battery module, and has great production practice significance.
Description
Technical Field
The utility model relates to the technical field of power lithium battery modules, in particular to a battery module with a heat conduction buffer structure.
Background
At present, lithium ion batteries have the advantages of high specific energy, many recycling times, long storage time and the like, are widely applied to portable electronic equipment such as mobile phones, digital video cameras and portable computers, and are also widely applied to large and medium-sized electric equipment such as electric automobiles, electric bicycles, electric tools and the like, so that the performance requirements on the lithium ion batteries are higher and higher.
To the lithium battery system that new energy car used, in the use, can appear on the one hand because the module temperature rise is too high, can't continuously carry out high magnification charge-discharge, influence whole car operation, especially summer high temperature is reported to the police to because the uneven scheduling problem of long-time difference, can influence the cyclicity performance of battery, on the other hand, along with the energy density of monomer electricity core is more and more high, the bulging force of electricity core is also more and more big, the bulging force of corresponding module is also more and more high.
Therefore, there is a need to develop a technology to solve the problems of high temperature and uniform temperature of the battery module and the expansion force of the battery module.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a battery module with a heat conduction buffer structure, aiming at the technical defects in the prior art.
Therefore, the utility model provides a battery module with a heat conduction buffer structure, which comprises a battery module main body and a heat conductor;
the battery module main body comprises a plurality of parallel battery cores and two end plates;
the two end plates are respectively positioned at the left side and the right side of the battery module main body;
the upper end and the lower end of the peripheral side surface of the battery module main body are respectively sleeved with a packing belt in a surrounding manner;
wherein, a heat insulation sheet which is vertically distributed is arranged between each end plate and the adjacent electric core;
a reserved gap is formed between the side surfaces of any two adjacent battery cells respectively;
the upper part of the heat conductor is inserted into all the gaps and used for radiating the side surface of the battery cell;
the lower part of the heat conductor is bonded with the bottom surfaces of all the battery cores through heat conducting glue and used for conducting heat conduction at the bottoms of the battery cores.
Preferably, the bottom surface of the heat conductor is bonded with the top surface of a liquid cooling plate through a heat conducting glue.
Preferably, the heat insulating sheet is an insulating heat insulating sheet.
Preferably, the heat conductor includes a horizontal heat conducting portion and an insertion heat conducting portion;
the top of the horizontal heat conducting part is vertically connected with a plurality of inserted heat conducting parts;
each inserting heat conduction part is used for being inserted into a gap between two adjacent battery cell side surfaces;
the left and right side surfaces of the heat conducting part are inserted into the battery cell and are respectively bonded with the adjacent side surfaces of the battery cell through heat conducting glue.
Preferably, the surfaces of the horizontal heat-conducting portion and the intervening heat-conducting portion are coated with a superconducting heat material coating.
Preferably, the transverse spacing between any two adjacent inserted heat conducting parts is equal to the transverse width of the battery cell.
Preferably, the horizontal heat-conducting portion and the inserted heat-conducting portion are both made of an elastic buffer material.
Preferably, the horizontal heat-conducting portion and the material inserted into the heat-conducting portion are polyurethane, silicone rubber, or silicone foam.
Compared with the prior art, the battery module with the heat conduction buffer structure has the advantages that the structural design is scientific, the problems of cooling and temperature equalization of the battery module can be solved, the problem of expansion force generated by expansion of the battery module can be solved, and the battery module has great production practice significance.
According to the utility model, the temperature of each battery is balanced through the ultrahigh thermal conductivity of the surface of the heat conductor, and finally all the battery temperature is transmitted to the bottom of the module, and then the battery is cooled through a water cooling plate and other modes, so that the battery module has good heat dissipation performance.
The utility model provides a module heat conduction buffer structure which can perform the heat dissipation of a module and also play a role in buffering when the module expands.
The utility model is a novel integrated module structure design, can integrate heat conduction and buffering, reduces the types of materials, simplifies the module assembly process, can better adapt to the current design mode, and also prolongs the cycle life of a single module.
Drawings
Fig. 1 is a schematic perspective view illustrating an assembled structure of a battery module having a heat-conducting buffer structure according to the present invention;
fig. 2 is a schematic perspective exploded view of a battery module with a heat-conducting buffer structure according to the present invention;
fig. 3 is a schematic perspective view illustrating a heat conductor in a battery module with a heat-conducting buffer structure according to the present invention;
in the figure, 10 is an end plate, 20 is a heat insulation sheet, 30 is a battery core, and 40 is a heat conductor;
50 is the packing area, 401 is horizontal heat-conducting portion, 402 is the insertion heat-conducting portion, 60 is the cooling plate.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1 to 3, the present invention provides a battery module having a heat conductive buffer structure, including a battery module main body 100 and a heat conductor 40;
the battery module main body 100 includes a plurality of battery cells 30 arranged in parallel and two end plates 10;
two end plates 10 respectively located at left and right sides of the battery module main body 100;
the upper and lower ends of the peripheral side surface of the battery module main body 100 are respectively and circularly sleeved with a packing belt 50;
wherein, a heat insulation sheet 20 which is vertically distributed is arranged between each end plate 10 and the adjacent electric core 30;
a reserved gap is formed between the side surfaces of any two adjacent battery cells respectively;
the upper part of the heat conductor 40 is inserted into all the gaps, and is used for heat dissipation of the side surface of the battery cell 30;
the lower part of the heat conductor 40 is bonded to the bottom surfaces of all the battery cells 30 through a heat conducting adhesive, and is used for conducting heat at the bottom of the battery cells.
In the present invention, the bottom surface of the heat conductor 40 is bonded to the top surface of a liquid cooling plate 60 by a heat conductive adhesive. Of course, the bottom surface of the heat conductor 40 is not limited to the liquid-cooled plate, and may be cooled by another cooling method.
It should be noted that, in the implementation, the liquid cooling plate 60 has a liquid inlet joint and a liquid outlet joint, which are respectively communicated with a liquid outlet and a liquid inlet of an external cooling pump (such as a water pump) through a hollow connecting pipeline, and the connecting pipeline and the water cooling plate main body are pre-filled with cooling liquid.
The coolant is a flame-retardant coolant or water. Wherein, the effect of outside cooling pump (such as water pump) is for the connecting tube and the cooling liquid in the water-cooling plate main part provides circulation power to guarantee that the cooling liquid can flow in by liquid-cooling plate and hollow connecting tube, and steerable cooling liquid's velocity of flow. In the concrete realization, install radiator and heater on the connecting tube to conveniently carry out the heat dissipation to the coolant liquid when summer and when winter, carry out heat treatment to the coolant liquid. This is prior art and is not specifically described herein.
In the present invention, both sides of the battery module are heat-insulated and insulated by the heat insulating sheets 20, and the outer sides are fixed by the end plates 10, but the material and the outer shape of the end plates 10 are not limited, and the end plates 10 are generally metal end plates.
For the present invention, the contact surface between any two adjacent battery cells 30 is the side surface (i.e. the left and right side surfaces) of the battery cell, and is the plane with the largest external dimension of the battery cell, and is not the pole surface on the top of the battery.
In the present invention, referring to fig. 2, a heat conductor 40 is adhered to a large-area position where the battery cell 30 contacts the battery cell 30; the heat insulation sheet 20 is required to be pasted at the position of the battery cell 30 at two sides of the battery module, which is close to one side of the end plate 10, so as to prevent the excessive heat dissipation of the battery cells at two sides.
In the present invention, the heat conductor 40 is made of a material having excellent surface thermal conductivity, and can rapidly equalize the temperature in the horizontal direction.
In the present invention, in a specific implementation, referring to fig. 3, the heat conductor 40 includes a horizontal heat conduction portion 401 and an insertion heat conduction portion 402;
a plurality of insertion heat-conducting portions 402 are vertically connected to the top of the horizontal heat-conducting portion 401;
each insertion heat conduction portion 402 is configured to be inserted into a gap between the side surfaces of two adjacent battery cells 30;
the left and right side surfaces of the heat conducting part 402 are inserted into the battery cells and bonded to the adjacent side surfaces of the battery cells 30 by heat conducting glue.
In a specific implementation, the lateral distance between any two adjacent insertion heat conduction portions 402 is equal to the lateral width of the battery cell 30.
In a specific implementation, the surfaces of the horizontal heat-conducting portion 401 and the insertion heat-conducting portion 402 are coated with a coating of super-heat-conductive material (e.g., a conventional nano-heat-conductive coating).
In a specific implementation, each of the heat conductors 40 is inserted into the heat conducting portion 402 and is pressed into the gap between two adjacent battery cells 30.
It should be noted that, in the present invention, the fixing manner of the heat conductor 40 may be covered and fixed by using a heat conducting glue, and it should be noted that if the fixing manner is performed by applying the heat conducting glue, it is required to ensure that the glue is thin and covers the entire surface of the battery cell to ensure the heat conductivity.
In a specific implementation, the horizontal heat conducting portion 401 and the insertion heat conducting portion 402 are both made of elastic buffer materials. The material used for these may be, for example, a material having compression resilience such as polyurethane, silicone rubber, or silicone foam, and is used for absorbing lateral force generated by expansion of the module.
In the present invention, in particular, the material of the heat insulation sheet 20 is aerogel or other heat insulation material;
in a specific implementation, the heat shield 20 is an insulating heat shield. The method specifically comprises the following steps: a polyimide film is arranged on the surface of the heat insulation sheet 20 for insulation treatment;
in the present invention, aerogel or other materials with thermal insulation and insulation, which is made of insulating film such as polyimide, should be used for the thermal insulation sheet 20 to ensure the temperature uniformity of the battery cell.
In order to more clearly understand the technical solution of the present invention, the following describes the working principle of the present invention.
For the present invention, on one hand, the heat conductor 40 is inserted between any two adjacent cells through each inserted heat conducting part 402, the horizontal heat conducting part 401 is supported at the bottom of the cell, the heat generated by the largest surface (i.e. the left and right side surfaces) and the bottom surface of the cell 30 can be rapidly transferred to the bottom of the heat conductor 40 through the super heat conducting material on the surface of the heat conductor 40, and then the heat at the bottom is dissipated through cooling methods such as the liquid cooling plate 60;
compared with the prior cooling strategy, the cooling method adopted by the utility model not only can conduct the heat of the battery cell from the bottom surface in time, but also can conduct the heat generated by the large surface (namely the side surface) of the battery cell in time, so that the battery cell can be cooled in a faster way, and meanwhile, the top-bottom temperature difference of the battery cell generated by only cooling the bottom of the battery cell in the prior art is avoided, and the heat dissipation efficiency of the battery module is greatly improved.
On the other hand, the material of heat conductor 40 adopts the elastic buffer material (its main part is the elastic buffer material promptly), can be compressed under the condition that receives the extrusion, when electric core because the increase of cycle number produces the bulging force, absorbs the bulging force that electric core produced to guarantee that the bulging force that whole module produced reduces, prevent that the binding force of packing area 50 (for example steel band) is not enough and breaking occurs, produce the safety problem.
For the utility model, the heat insulation sheet 20 is adopted between the battery cells at two sides of the battery module and the end plates, so that the battery cells at two sides can not generate redundant heat dissipation due to the metal end plates.
In summary, compared with the prior art, the battery module with the heat-conducting buffer structure provided by the utility model has a scientific structural design, can solve the problems of cooling and temperature equalization of the battery module, can also solve the problem of expansion force generated by expansion of the battery module, and has great production practice significance.
According to the utility model, the temperature of each battery is balanced through the ultrahigh thermal conductivity of the surface of the heat conductor, and finally all the battery temperature is transmitted to the bottom of the module, and then the battery is cooled through a water cooling plate and other modes, so that the battery module has good heat dissipation performance.
The utility model provides a module heat conduction buffer structure which can perform the heat dissipation of a module and also play a role in buffering when the module expands.
The utility model is a novel integrated module structural design, can integrate heat conduction and buffering, reduces the types of materials, simplifies the module assembly process, can better adapt to the current design mode, and also prolongs the cycle life of a single module.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A battery module with a heat-conducting buffer structure is characterized by comprising a battery module main body (100) and a heat conductor (40);
the battery module main body (100) comprises a plurality of battery cores (30) arranged in parallel and two end plates (10);
two end plates (10) respectively positioned at the left and right sides of the battery module main body (100);
the upper end and the lower end of the peripheral side surface of the battery module main body (100) are respectively and circularly sleeved with a packing belt (50);
wherein, a heat insulation sheet (20) which is vertically distributed is arranged between each end plate (10) and the adjacent battery cell (30);
wherein, a reserved gap is respectively arranged between the side surfaces of any two adjacent battery cores (30);
wherein, the upper part of the heat conductor (40) is inserted into all gaps and used for radiating the side surface of the battery core (30);
the lower part of the heat conductor (40) is bonded with the bottom surfaces of all the battery cores (30) through heat conducting glue and used for conducting heat conduction at the bottoms of the battery cores.
2. The battery module having the heat conductive buffer structure according to claim 1, wherein the bottom surface of the heat conductor (40) and the top surface of a liquid-cooled plate (60) are bonded by a heat conductive adhesive.
3. The battery module having the heat conductive buffer structure according to claim 1, wherein the heat insulating sheet (20) is an insulating heat insulating sheet.
4. The battery module having the heat conductive buffer structure according to any one of claims 1 to 3, wherein the heat conductor (40) comprises a horizontal heat conductive portion (401) and an insertion heat conductive portion (402);
a plurality of inserted heat conducting parts (402) are vertically connected to the top of the horizontal heat conducting part (401);
each insertion heat conduction part (402) is used for being inserted into a gap between the side faces of two adjacent battery cores (30);
the left and right side surfaces of the heat conducting part (402) are inserted and are respectively bonded with the side surfaces of the adjacent electric cores (30) through heat conducting glue.
5. The battery module having the heat conductive buffer structure according to claim 4, wherein the surfaces of the horizontal heat conductive part (401) and the insertion heat conductive part (402) are coated with a coating layer of a super heat conductive material.
6. The battery module having the heat conductive buffer structure according to claim 4, wherein the lateral distance between any adjacent two of the inserted heat conductive portions (402) is equal to the lateral width of the battery cell (30).
7. The battery module having the heat conductive buffer structure according to claim 4, wherein the horizontal heat conductive part (401) and the insertion heat conductive part (402) are each formed of an elastic buffer material.
8. The battery module having a heat conductive buffer structure according to claim 7, wherein the horizontal heat conductive part (401) and the material inserted into the heat conductive part (402) are made of polyurethane, silicone rubber, or silicone foam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121322902.9U CN216488303U (en) | 2021-06-15 | 2021-06-15 | Battery module with heat conduction buffer structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121322902.9U CN216488303U (en) | 2021-06-15 | 2021-06-15 | Battery module with heat conduction buffer structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216488303U true CN216488303U (en) | 2022-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121322902.9U Active CN216488303U (en) | 2021-06-15 | 2021-06-15 | Battery module with heat conduction buffer structure |
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| Country | Link |
|---|---|
| CN (1) | CN216488303U (en) |
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2021
- 2021-06-15 CN CN202121322902.9U patent/CN216488303U/en active Active
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