CN218827401U - Liquid cooling battery module - Google Patents
Liquid cooling battery module Download PDFInfo
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- CN218827401U CN218827401U CN202222867227.9U CN202222867227U CN218827401U CN 218827401 U CN218827401 U CN 218827401U CN 202222867227 U CN202222867227 U CN 202222867227U CN 218827401 U CN218827401 U CN 218827401U
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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 relates to a liquid cooling battery module, which comprises a plurality of juxtaposed square electric cores, wherein liquid cooling plates are arranged by matching all the square electric cores, and a heat conducting glue layer is arranged between any one square electric core and each liquid cooling plate; the square electric core outer end in the cooperation outside is equipped with the end plate, and the square electric core top of all cooperations is equipped with electric connector, and all square electric cores of cooperation and end plate are equipped with the mounting outward. The utility model improves the temperature rise of the battery module under the conditions of quick charging and quick discharging, basically realizes zero temperature rise and improves the heat dissipation capacity of the module; the position of the liquid cooling plate in the battery module is optimized, the safety and reliability of the module are improved, the problem of uneven heat exchange of the traditional liquid cooling plate is solved, and the service life of the battery core is prolonged; the method for mounting the square batteries into groups is optimized, the arrangement is reasonable and compact, the universality is improved, and the later maintenance cost is reduced; carry out the heat transfer more evenly effectively, charge and discharge temperature when electric core rises, carry out the heat exchange through the liquid cooling board, the release heat, the heat dissipation is more even, reinforcing heat-sinking capability.
Description
Technical Field
The present invention relates to a method or device for directly converting chemical energy into electric energy, for example, in the technical field of battery packs, and more particularly, to a liquid-cooled battery module.
Background
At present, the power lithium battery industry develops very rapidly, and the application of the power lithium battery industry is expanded to the fields of electric buses, electric cars, micro buses, energy storage and the like.
Because the power lithium battery needs frequent charging and discharging in the using process, technical personnel pay attention to and track the real-time performance of the power lithium battery, and the attention to the heat dissipation of the battery is also the key for the power lithium battery to fully exert the function.
In the prior art, a square battery cell is generally directly stacked in a grouping process, the battery cell, an end plate and an insulating sheet are bonded and fixed by coating structural adhesive on a large surface, no gap is left between every two adjacent battery cells, the end plate and the side plate are connected by adopting structures such as welding, screws or riveting, and the like, and for cooling, a mode that the battery cell is placed in a positive mode and a liquid cooling plate is placed at the bottom of the battery cell is generally adopted, so that the installation mode can only carry out heat exchange on the bottom of the battery cell, on one hand, the heat exchange area is limited, on the other hand, the heat generated by the battery cell is concentrated in a top tab area, and the heat exchange at the bottom is difficult to realize uniform temperature control; still another improved structure is when the equipment electric core, and battery reserve has the clearance, makes the assembly of module not influenced by the thickness variation that monomer electric core's inflation brought, reduces the requirement of module assembly to frock clamp simultaneously, improves the assemblability of module, though this kind of mode prevents the diffusion of thermal runaway, and it does not in fact have the maximum heat of deriving, releasing.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem existing in the prior art, the utility model provides a liquid cooling battery module.
The technical scheme adopted by the utility model is that the liquid cooling battery module comprises a plurality of juxtaposed square electric cores, all the square electric cores are matched with liquid cooling plates, and a heat conducting glue layer is arranged between any one of the square electric cores and the liquid cooling plates; the cooperation outside square electric core outer end is equipped with the end plate, and the cooperation is all square electric core top is equipped with electric connector, and the cooperation is all square electric core and end plate are equipped with the mounting outward.
Preferably, one or more liquid cooling plates are arranged to match all the square battery cells, and an interface module is arranged at the corresponding end of one or more liquid cooling plates in a matching manner.
Preferably, the liquid cooling plate comprises a snake-shaped shell, the shell comprises a plurality of placing grooves in opposite directions, and the square battery cores are arranged in the placing grooves in a one-to-one correspondence manner; a flow channel is arranged in the shell, and an interface module is arranged at the opening at the two ends of the shell in a matching mode.
Preferably, the shell comprises a first snake-shaped plate and a second snake-shaped plate which are arranged in a matched mode, sealing plates are arranged on two sides of the first snake-shaped plate and two sides of the second snake-shaped plate in a matched mode, and a gap is formed between the first snake-shaped plate and the second snake-shaped plate.
Preferably, the first serpentine plate or the second serpentine plate comprises transverse plates and vertical plates which are alternately arranged, and a transition plate is arranged between the adjacent transverse plates and vertical plates; both ends of the first snake-shaped plate or the second snake-shaped plate are transverse plates.
Preferably, a plurality of partition plates are arranged between the first snake-shaped plate and the second snake-shaped plate, the top and the bottom of any partition plate are respectively abutted to the opposite surfaces of the first snake-shaped plate and the second snake-shaped plate, and two sides of any partition plate are flow passages.
Preferably, one or more plug cavities are arranged in any one of the interface modules, and the plug cavities are matched with the edges of the two ends of the liquid cooling plate.
Preferably, all square electricity cores of cooperation are equipped with one or more liquid cooling board, and the both ends of every liquid cooling board are equipped with interface module, arbitrary interface module is equipped with one and connects and inserts the chamber, arbitrary liquid cooling board corresponding at least 1 connect to insert the chamber and go up the cooperation and be equipped with the water conservancy diversion opening.
Preferably, cooperate all square electric cores to be equipped with a plurality of liquid cooling boards, connect that same interface module connects chamber space intercommunication just through the end at least 1 of 2 at least liquid cooling boards at least 1 that corresponds connect to insert the chamber and go up the cooperation and be equipped with the water conservancy diversion opening.
Preferably, the thickness d of the heat-conducting adhesive layer gradually increases from the central square battery cell to two sides, the increasing rate is α, the thickness adjusting value is β, the thickness of the heat-conducting adhesive layer on two sides of the central square battery cell is d = α β KR, the thickness of the heat-conducting adhesive layer on the outermost side is d = KR, where K is heat conductivity, R is a thermal resistance value, 0 < α, and β < 1.
The utility model provides a liquid-cooled battery module, which comprises a plurality of juxtaposed square electric cores, wherein liquid-cooled plates are arranged by matching with all the square electric cores, and a heat-conducting adhesive layer is arranged between any one square electric core and the liquid-cooled plate; the square electric core outer end in the cooperation outside is equipped with the end plate, and the square electric core top of all cooperations is equipped with electric connector, and all square electric cores of cooperation and end plate are equipped with the mounting outward.
The beneficial effects of the utility model reside in that:
(1) The temperature rise of the battery module under the conditions of quick charge and quick discharge is improved, zero temperature rise is basically realized, and the heat dissipation capacity of the module is improved;
(2) The position of the liquid cooling plate in the battery module is optimized, the safety and reliability of the module are improved, the problem of uneven heat exchange of the traditional liquid cooling plate is solved, the welding seam of the end plate and the side plate does not need to bear the expansion force of the battery, a gap is formed between the battery and the battery through the liquid cooling plate, the expansion force of the battery is released, and the service life of the battery core is prolonged;
(3) The method for mounting the square batteries into groups is optimized, the arrangement is reasonable and compact, the universality is improved, the later maintenance cost is reduced, and gaps are reserved between the batteries, so that the assembly of the module is not influenced by the thickness change caused by the expansion of the single batteries, and the requirements of the module assembly on a pair tool clamp are reduced;
(4) Compared with the traditional liquid cooling plate, the effective contact surface of the liquid cooling plate and the battery cell is enlarged, the heat exchange area is increased, meanwhile, the heat exchange surface is also transferred to the side face from the bottom of the battery cell, the heat exchange surface is laminated on the battery cell, heat exchange is carried out more uniformly and effectively, when the charging and discharging temperature of the battery cell rises, heat exchange is carried out through the liquid cooling plate, heat is released, the heat dissipation is more uniform, and the heat dissipation capability is enhanced.
Drawings
Fig. 1 is a schematic perspective view of a liquid-cooled battery module according to the present invention;
fig. 2 is a schematic perspective view of a liquid cooling plate according to embodiment 1 of the present invention;
fig. 3 is a schematic top view of a liquid cooling plate according to embodiment 1 of the present invention;
FIG. 4 isbase:Sub>A schematic structural view ofbase:Sub>A cross-sectional view A-A of FIG. 3;
fig. 5 is a schematic perspective view of a liquid cooling plate according to embodiment 2 of the present invention;
fig. 6 is a schematic top view of a liquid cooling plate according to embodiment 2 of the present invention;
FIG. 7 is a schematic structural view of a sectional view B-B of FIG. 6;
FIG. 8 is a schematic cross-sectional view of the structure of FIG. 6 in section C-C;
fig. 9 is a schematic diagram of a liquid-cooled battery module group perspective view.
Detailed Description
The present invention will be described in further detail with reference to the following examples, but the scope of the present invention is not limited thereto.
The utility model relates to a liquid cooling battery module, which comprises a plurality of juxtaposed square battery cores 1, wherein all the square battery cores 1 are matched with liquid cooling plates 2, and a heat conducting adhesive layer (not shown in the figure) is arranged between any one of the square battery cores 1 and the liquid cooling plates 2; the cooperation outside 1 outer end of square electric core is equipped with end plate 3, and the cooperation is all 1 top of square electric core is equipped with electric connector 4, and the cooperation is all square electric core 1 and end plate 3 are equipped with mounting 5 outward.
The utility model discloses in, the battery module based on square electric core 1 generally is the cuboid, and the liquid cooling board 2 that cooperates all square electric core 1 settings generally is snakelike promptly, and snakelike liquid cooling board 2 is provided with opposite direction, the same standing groove 6 of size to these standing grooves 6 carry out the position to square electric core 1 one by one and prescribe a limit to, and the electrode direction of square electric core 1 is generally unified.
The utility model discloses in, set up end plate 3, top setting outside square electric core 1 in the outside and be used for the electric connector 4 of electricity connection, set up mounting 5 outside all square electric cores 1 and end plate 3 at last, mounting 5 includes but is not limited to fixed knot structure such as steel band for all parts are a whole, square electric core 1 module promptly.
In the present invention, the application of the end plate 3 and the electrical connector 4 is a conventional technique in the field, and those skilled in the art can set the arrangement by themselves based on understanding.
The utility model discloses in, multiple structures such as single multiseriate, multirow multiseriate can be realized to 1 module of square electric core in practical application, and can be applied to battery pack, and the operation is convenient, and the radiating effect is good, the security is high.
All the square electric cores 1 are matched to be provided with one or more liquid cooling plates 2, and the corresponding ends of the one or more liquid cooling plates 2 are matched to be provided with interface modules 7.
The utility model discloses in, based on the holistic power of 1 module of square electric core, it will produce different heats, so the design regards as the component of 1 module of square electric core with one or more liquid cold plate 2, sets up the different chamber structures of inserting that connect simultaneously, realizes different radiating mode.
The liquid cooling plate 2 comprises a snake-shaped shell, the shell comprises a plurality of placing grooves 6 with opposite directions, and the square battery cores 1 are correspondingly arranged in the placing grooves 6 one by one; a flow passage 8 is arranged in the shell, and an interface module 7 is arranged at the opening at the two ends of the shell.
The utility model discloses in, liquid cooling plate 2 is including the shell that the integration set up, and is provided with runner 8 in the shell, and interface module 7 outside the shell can the integration set up, can also follow-up heat dissipation demand based on reality sets up.
The utility model discloses in, the whole snakelike that is of shell, in fact, for the convenience of its and the cooperation of square electricity core 1, its standing groove 6 with reverse setting in turn constitutes the snakelike, this content that can understand for the skilled person in the art.
The shell comprises a first snake-shaped plate 21 and a second snake-shaped plate 22 which are arranged in a matching mode, sealing plates 23 are arranged on two sides of the first snake-shaped plate 21 and the second snake-shaped plate 22 in a matching mode, and gaps are arranged between the first snake-shaped plate 21 and the second snake-shaped plate 22 (namely, the gaps and the partition plates and the sealing plates 23 form a flow channel 8 finally).
The first snake-shaped plate 21 or the second snake-shaped plate 22 comprises transverse plates and vertical plates which are alternately arranged, and a transition plate 24 is arranged between the adjacent transverse plates and vertical plates; and both ends of the first snake-shaped plate 21 or the second snake-shaped plate 22 are horizontal plates.
In the utility model, the shape of the shell is further limited, which comprises 2 snake-shaped plates, a gap is arranged between the first snake-shaped plate 21 and the second snake-shaped plate 22, and the gaps at the two sides of the first snake-shaped plate 21 and the second snake-shaped plate 22 are connected with a sealing plate 23; the first and second snake-shaped plates 21 and 22 are not identical in that the length of the corresponding cross plate is different.
The utility model discloses in, because first snake-shaped plate 21 and second snake-shaped plate 22 are snakelike, so it obviously includes alternative diaphragm and riser, and obviously, 2 adjacent diaphragms are connected with the top and the bottom of riser between the two respectively, and 2 adjacent risers set up the both ends at diaphragm between the two respectively.
The utility model discloses in to cross 24 transitional coupling diaphragms of cab apron and riser, avoid it to gouge electric core 1 in the application, cause electric core 1 out of control or bigger loss.
The utility model discloses in, the both ends of first snake-shaped plate 21 or second snake-shaped plate 22 all end with the diaphragm, the leading-in of the radiating fluid of being convenient for and whole battery module's setting.
A plurality of partition plates 24 are arranged between the first snake-shaped plate 21 and the second snake-shaped plate 22, the tops and the bottoms of the partition plates 24 are respectively abutted to the opposite surfaces of the first snake-shaped plate 21 and the second snake-shaped plate 22, and the two sides of any partition plate 24 are flow passages 8.
The utility model discloses in to baffle 24 cuts off the clearance between first snake-shaped board 21 and second snake-shaped board 22, and then forms runner 8, obviously, baffle 24 is the snake-shaped riser such as height with the clearance.
The utility model discloses in, in practical application, should fully consider battery power and gravity to the influence of fluid, runner 8's width can not be equal, and generally speaking, runner 8 density of top is greater than runner 8 density of below.
Any one of the interface modules 7 is provided with one or more insertion cavities 71, and the insertion cavities 71 are matched with the edges of the two ends of the liquid cooling plate 2.
The utility model discloses in, connect and insert chamber 71 including the cavity, the fluid in every runner 8 will collect and connect and mix in inserting the cavity of chamber 71, also be a heat transfer and balanced mode in fact, and then realize the heat dissipation of certain degree.
The utility model discloses in, to the great battery of power, connect to insert to set up the water conservancy diversion opening on chamber 71 at one or two, realize the leading-in of leading-out, the cryogenic fluid of temperature rise fluid.
The present invention has various embodiments for the setting of the interface module 7, which are closely related to the heat dissipation scheme of the battery, and on the basis of the foregoing technical contents, at least two embodiments related to the interface module 7 are given below, but the embodiments can be expanded more in practical applications.
Example 1
All square electric cores 1 of cooperation are equipped with one or more liquid cooling board 2, and the both ends of every liquid cooling board 2 are equipped with interface module 7, arbitrary interface module 7 is equipped with one and connects and inserts chamber 71, and arbitrary liquid cooling board 2 corresponds 1 at least connect to insert and be equipped with water conservancy diversion opening 9 on the chamber 71.
In this embodiment, one or more liquid-cooling plates 2 are provided for the battery module, and liquid cooling is independently realized between each liquid-cooling plate 2, and the socket cavity 71 at this time is unique, that is, each socket cavity 71 corresponds to one liquid-cooling plate 2.
In this embodiment, at least one insertion cavity 71 corresponding to each liquid cooling plate 2 needs to be provided with a flow guide opening 9 to realize the introduction and the discharge of heat dissipation fluid; of course, the diversion opening 9 may be provided on each insertion cavity 71 to realize rapid replacement of the fluid in the liquid-cooled plate 2.
Example 2
All square electric cores 1 of cooperation are equipped with a plurality of liquid cooling boards 2, and the chamber 71 space intercommunication just is inserted through connecing of same interface module 7 to at least 1 end of 2 at least liquid cooling boards 2 at least 1 that correspond connect to insert the chamber 71 go up the cooperation and be equipped with water conservancy diversion opening 9.
In this embodiment, a plurality of liquid cooling plates 2 are disposed on the battery module, and at least 2 of the liquid cooling plates 2 need to share at least one interface module 7, and at this time, the plug cavity 71 in the interface module 7 shared by the at least 2 liquid cooling plates 2 is connected.
In this embodiment, this at least 1 of 2 at least liquid cooling plates 2 connect to set up water conservancy diversion opening 9 on inserting chamber 71, can realize multiple different liquid cooling effects, for example, it sets up water conservancy diversion opening 9 respectively to correspond 2 liquid cooling plates 2, and the radiating fluid can be leaded in from 1 water conservancy diversion opening 9 promptly, through 1 corresponding liquid cooling plate 2, behind the upper portion or the lower part through electric core 1, from another liquid cooling plate 2, behind the lower part or the upper portion through electric core 1, derive the heat transfer from another water conservancy diversion opening 9.
The thickness d of heat-conducting adhesive layer is from square electric core 1 at center to both sides crescent, and the increase rate is alpha, and the thickness regulating value is beta, the square electric core 1 both sides at center the thickness of heat-conducting adhesive layer is d = alpha beta KR, the outside the thickness of heat-conducting adhesive layer is d = KR, wherein, K is the heat conductivity, and R is the thermal resistance value, and 0 < alpha, beta < 1.
The utility model discloses in, through the Fourier formula, Q = KA delta T/d, R = A delta T/Q, wherein, Q is the heat, K is the heat conductivity, A is area of contact, d is the thickness of heat conduction glue film, delta T is the temperature difference, R is the thermal resistance value, can convert and obtain K = d/R, because the heat conductivity is the intrinsic performance parameter of material itself, so thermal resistance R value is directly proportional with the thickness d of heat conduction glue film, based on this, the thickness d of heat conduction glue film increases to both sides with the center gradually.
In the utility model discloses in, furtherly, use alpha as linear increasing rate, but to some square battery module, its heat dissipation probably does not follow linear law, adjusts with thickness regulating value beta this moment.
Claims (10)
1. The utility model provides a liquid cooling battery module which characterized in that: the battery comprises a plurality of juxtaposed square battery cores, wherein liquid cooling plates are arranged in cooperation with all the square battery cores, and a heat conducting adhesive layer is arranged between any one of the square battery cores and the liquid cooling plate; the cooperation outside square electric core outer end is equipped with the end plate, and the cooperation is all square electric core top is equipped with electric connector, and the cooperation is all square electric core and end plate are equipped with the mounting outward.
2. The liquid-cooled battery module as claimed in claim 1, wherein: all the square electric cores are matched to be provided with one or more liquid cooling plates, and the corresponding ends of the one or more liquid cooling plates are matched to be provided with interface modules.
3. The liquid-cooled battery module as claimed in claim 2, wherein: the liquid cooling plate comprises a snake-shaped shell, the shell comprises a plurality of placing grooves in opposite directions, and the square battery cells are arranged in the placing grooves in a one-to-one correspondence manner; a flow channel is arranged in the shell, and an interface module is arranged at the opening at the two ends of the shell in a matching mode.
4. The liquid-cooled battery module as set forth in claim 3, wherein: the shell is including the first snake-shaped plate and the second snake-shaped plate that the cooperation set up, the cooperation the both sides of first snake-shaped plate and second snake-shaped plate are equipped with the shrouding, be equipped with the clearance between first snake-shaped plate and the second snake-shaped plate.
5. The liquid-cooled battery module as recited in claim 4, wherein: the first snake-shaped plate or the second snake-shaped plate comprises transverse plates and vertical plates which are alternately arranged, and transition plates are arranged between the transverse plates and the vertical plates which are adjacent to each other; both ends of the first snake-shaped plate or the second snake-shaped plate are transverse plates.
6. The liquid-cooled battery module as claimed in claim 4, wherein: a plurality of partition plates are arranged between the first snake-shaped plate and the second snake-shaped plate, the top and the bottom of each partition plate are abutted to the opposite surfaces of the first snake-shaped plate and the second snake-shaped plate respectively, and flow channels are formed in the two sides of each partition plate.
7. The liquid-cooled battery module as claimed in claim 2, wherein: one or more plug cavities are arranged in any interface module, and the plug cavities are matched with the edges of the two ends of the liquid cooling plate.
8. The liquid-cooled battery module as claimed in claim 7, wherein: all square electric cores of cooperation are equipped with one or more liquid cooling board, and the both ends of every liquid cooling board are equipped with interface module, arbitrary interface module is equipped with one and connects and inserts the chamber, and arbitrary liquid cooling board corresponds 1 at least connect and insert the cooperation and be equipped with the water conservancy diversion opening on the chamber.
9. The liquid-cooled battery module as recited in claim 7, wherein: all square electric cores of cooperation are equipped with a plurality of liquid cooling boards, and connect the chamber space intercommunication just that connects of inserting of 2 at least liquid cooling boards at least 1 end through same interface module connect at least 1 that 2 at least liquid cooling boards correspond connect to insert the cooperation on the chamber and be equipped with the water conservancy diversion opening.
10. The liquid-cooled battery module as set forth in claim 1, wherein: the thickness d of the heat-conducting adhesive layer is gradually increased from the central square battery cell to two sides, the increasing rate is alpha, the thickness adjusting value is beta, the thicknesses of the heat-conducting adhesive layer on two sides of the central square battery cell are d = alpha beta KR, the thickness of the heat-conducting adhesive layer on the outermost side is d = KR, wherein K is heat conductivity, R is thermal resistance value, alpha is greater than 0, and beta is less than 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222867227.9U CN218827401U (en) | 2022-10-30 | 2022-10-30 | Liquid cooling battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222867227.9U CN218827401U (en) | 2022-10-30 | 2022-10-30 | Liquid cooling battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218827401U true CN218827401U (en) | 2023-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222867227.9U Active CN218827401U (en) | 2022-10-30 | 2022-10-30 | Liquid cooling battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218827401U (en) |
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2022
- 2022-10-30 CN CN202222867227.9U patent/CN218827401U/en active Active
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