CN218996851U - Liquid cooling heat dissipation non-welding grouping structure of battery pack, battery pack and power battery box - Google Patents
Liquid cooling heat dissipation non-welding grouping structure of battery pack, battery pack and power battery box Download PDFInfo
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- CN218996851U CN218996851U CN202223022359.8U CN202223022359U CN218996851U CN 218996851 U CN218996851 U CN 218996851U CN 202223022359 U CN202223022359 U CN 202223022359U CN 218996851 U CN218996851 U CN 218996851U
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- pressing plate
- battery pack
- heat dissipation
- welding
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- 238000001816 cooling Methods 0.000 title claims abstract description 84
- 239000007788 liquid Substances 0.000 title claims abstract description 82
- 230000017525 heat dissipation Effects 0.000 title claims abstract description 30
- 238000003466 welding Methods 0.000 title claims abstract description 28
- 238000003825 pressing Methods 0.000 claims abstract description 91
- 239000003507 refrigerant Substances 0.000 claims description 27
- 238000007789 sealing Methods 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000000712 assembly Effects 0.000 abstract description 5
- 238000000429 assembly Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000004146 energy storage Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- -1 that is Substances 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 pack liquid cooling heat dissipation non-welding unitized structure, a battery pack and a power battery box, wherein the battery pack liquid cooling heat dissipation non-welding unitized structure comprises a plurality of liquid cooling plates, a plurality of water channel pressing plate assemblies, an end male end pressing plate and an end female end pressing plate which are arranged at the end parts, and a connecting pipe for connecting adjacent water channel pressing plate assemblies; the utility model has the advantages that compared with a liquid cooling heat dissipation system welded into groups, the requirement on the production process is low, the operation is convenient, the tightness is good, the temperature of the battery cells can be reduced through the liquid cooling plates, the temperature uniformity of the battery cells is improved, and the service life of the battery pack is prolonged.
Description
Technical Field
The utility model relates to the technical field of heat management of energy storage batteries, in particular to a liquid cooling heat dissipation welding-free grouping structure of a battery pack, a battery pack and a power battery box.
Background
When the energy storage battery pack is charged and discharged, a large amount of heat can be generated, the space arrangement of the batteries is compact, the temperature in the energy storage battery pack rises rapidly, even if the temperature of the total arrangement space in the battery pack and the container can be effectively reduced under the action of the existing heat dissipation device, the local heat in the container is difficult to be uniformly discharged, and the battery running environments have larger difference. The battery pack can cause serious difference in internal resistance and capacity among batteries when operated for a long time under the environment with larger temperature difference, so that partial batteries can be overcharged or overdischarged, the performance and the service life of an energy storage system are influenced, and serious potential safety hazards can be caused.
Aiming at the problems, we provide a battery module structure with large side liquid cooling of a battery cell, the utility model patent of application number CN202210815781.4 discloses a group structure and a group method of the battery cell and liquid cooling plates, the liquid cooling plates are arranged on two large sides of the battery cell, the cooling effect is better, but the number of the liquid cooling plates is more, the liquid cooling plates are grouped by welding, the structural strength is good, but the technical requirement on welding is high, and meanwhile, a conversion block is required to be added in welding due to larger position and size tolerance between the battery cell and the liquid cooling plates, so that the welding is prevented from losing efficacy due to the size deviation caused by larger tolerance. The unitized structure has higher production cost and high process requirement, so that the unitized structure of the liquid cooling system without welding needs to be designed, and the cooling and heat dissipation effects of the battery system are ensured while the unitized difficulty and the cost are reduced.
Disclosure of Invention
The utility model mainly aims to provide a non-welding grouping structure and a non-welding grouping method of a liquid cooling heat dissipation system of an energy storage battery pack, and aims to solve the limitation of welding grouping of the liquid cooling system.
In order to achieve the above purpose, the utility model provides a battery pack liquid cooling heat dissipation non-welding grouping structure, comprising:
the liquid cooling plates are provided with spaces for accommodating a plurality of electric cores, the lower parts of the liquid cooling plates are provided with two connecting end parts extending downwards, refrigerant channels are arranged in the connecting end parts, and the refrigerant channels form two refrigerant channel openings communicated with the outside on the connecting end parts;
the multi-group water channel pressing plate assembly comprises a male end pressing plate and a female end pressing plate which are arranged at the connecting end part in a pairwise manner,
a connecting pipe for connecting adjacent water channel pressing plate components,
the male end pressing plate at the end part is used for being matched with the female end pressing plate arranged at one side end part to seal the refrigerant passage of the liquid cooling plate,
and an end female end pressing plate for sealing the refrigerant passage of the liquid cooling plate by the male end pressing plate arranged at the end of the other side,
the water channel pressing plate assembly is arranged at the connecting end part, wherein pipe joints are arranged on the male end pressing plate and the female end pressing plate, sealing strips protruding outwards are arranged on the male end pressing plate, sealing grooves matched with the sealing strips are arranged on the female end pressing plate, after the male end pressing plate and the female end pressing plate are combined, a cavity for accommodating the connecting end part is formed in the female end pressing plate, and the cavity is communicated with the refrigerant channel and the pipe joints.
Further, a plurality of connecting holes which are in one-to-one correspondence are also formed in the male end pressing plate and the female end pressing plate.
Further, the sealing strips on the male end pressing plate encircle the cavity at the left side, the right side and the lower side.
Further, a liquid cooling plate positioning opening is formed in the connecting end portion, and a liquid cooling plate positioning portion matched with the liquid cooling plate positioning opening is arranged on the male end pressing plate.
Further, the liquid cooling plate positioning part is arranged at the upper end of the sealing strip of the male end pressing plate and horizontally extends inwards to the cavity.
Furthermore, the pipe joint and the two ends of the connecting pipe are two-way water-stopping quick connectors.
Further, a threaded connecting piece is arranged on the connecting hole.
Further, a section of corrugated pipe is arranged on the connecting pipe.
Furthermore, the utility model also provides a battery pack, which comprises a battery shell, wherein a battery pack liquid cooling heat dissipation non-welding grouping structure and a battery core are arranged in the battery shell.
Furthermore, the utility model also provides a power battery box which comprises one or more battery packs.
In summary, compared with a welded grouping structure, the utility model has the advantages of simple structure, lower requirements on production technology, convenient operation, better sealing performance, small flow resistance of the flowing refrigerant, good heat dissipation effect, and capabilities of enabling each battery cell to be cooled through the liquid cooling plate, improving the temperature uniformity of the battery cell effectively and prolonging the service life of the battery pack, and the requirements on the production technology are lower. The liquid cooling heat dissipation structure is compact in design, small in influence on the volume of the battery pack and high in popularization value.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic three-dimensional structure of an embodiment of the present utility model.
Fig. 2 is a schematic diagram of a male end platen structure according to an embodiment of the present utility model.
FIG. 3 is a schematic diagram of a structure of a female end platen according to an embodiment of the present utility model.
Fig. 4 is a schematic diagram of a connection end portion of a liquid cooling plate according to an embodiment of the utility model.
Reference numerals illustrate:
the device comprises a 1-liquid cooling plate, a 11-refrigerant passage, a 12-refrigerant passage opening, a 13-connecting end part, a 14-liquid cooling plate positioning opening, a 2-water channel pressing plate assembly, a 21-male end pressing plate, a 22-female end pressing plate, a 23-pipe joint, a 24-sealing strip, a 25-sealing groove, a 26-connecting hole, a 27-cavity, a 28-liquid cooling plate positioning part, a 3-connecting pipe, a 31-corrugated pipe, a 4-end male end pressing plate and a 5-end female end pressing plate.
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" is presented throughout this document, it is intended to include three schemes in parallel, taking "a and/or B" as an example, including a scheme, or B scheme, or a scheme where a and B meet simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
Under normal conditions, when the energy storage battery pack is charged and discharged, a large amount of heat is generated, the space arrangement of the batteries is compact, the temperature in the energy storage battery pack is rapidly increased, and even if the temperature of the total arrangement space in the battery pack and the container can be effectively reduced under the action of the existing heat dissipation device, the local heat in the container is difficult to uniformly discharge, and the running environments of the batteries are greatly different. The battery pack can cause serious difference in internal resistance and capacity among batteries when operated for a long time under the environment with larger temperature difference, so that partial batteries can be overcharged or overdischarged, the performance and the service life of an energy storage system are influenced, and serious potential safety hazards can be caused.
In order to solve the above problems, the present utility model provides a liquid cooling and heat dissipation non-welding grouping structure of a battery pack, and fig. 1 to 4 are schematic three-dimensional structures of an embodiment of the present utility model.
Referring to fig. 1, a liquid cooling heat dissipation non-welding grouping structure of a battery pack includes:
the liquid cooling plates 1, wherein a space for accommodating a plurality of electric cores is arranged between the liquid cooling plates 1, two connecting end parts 13 extending downwards are arranged at the lower part of the liquid cooling plates 1, a refrigerant channel 11 is arranged in the liquid cooling plates 1, and two refrigerant channel openings 12 communicated with the outside are formed on the connecting end parts 13 by the refrigerant channel 11;
the multi-group water channel pressing plate assembly 2 comprises a male end pressing plate 21 and a female end pressing plate 22, the male end pressing plate 21 and the female end pressing plate 22 are arranged at the connecting end part 13 in a group by group,
a connecting pipe 3 connecting adjacent water channel pressing plate assemblies 2,
the male end pressing plate 4 is used for being matched with the female end pressing plate 22 arranged at one side end to seal the refrigerant channel 11 of the liquid cooling plate 1,
and an end female end pressing plate 5 for closing the refrigerant passage 11 of the liquid cooling plate 1 by matching with a male end pressing plate 21 arranged at the end of the other side,
the water channel pressing plate assembly 2 is arranged at the connecting end part 13, wherein pipe joints 23 are arranged on the male end pressing plate 21 and the female end pressing plate 22, sealing strips 24 protruding outwards are arranged on the male end pressing plate 21, sealing grooves 25 matched with the sealing strips 24 are arranged on the female end pressing plate 22, after the male end pressing plate 21 and the female end pressing plate 22 are combined, a cavity 27 for accommodating the connecting end part 13 is formed in the water channel pressing plate assembly, and the cavity 27 is communicated with the refrigerant channel 11 and the pipe joints 23.
In this embodiment, referring to fig. 1, the refrigerant enters from the water channel pressing plate assembly 2 at the left side of the front end of the whole liquid cooling system, flows into the cavity 27 of the water channel pressing plate assembly 2 through the pipe joint 23, then enters the liquid cooling plate through the refrigerant channel 11, simultaneously flows into the next water channel pressing plate assembly 2 through the connecting pipe 3, fills all the liquid cooling plates, flows out from the pipe joint of the last water channel pressing plate assembly 2 at the right side, and reenters the refrigerant circulation.
The female end pressing plate 5 has no pipe joint 23, and the other structures are identical to those of the female end pressing plate 22, in this embodiment, the female end pressing plate 5 is matched with the male end pressing plate 21 arranged on the right side of the front end, so as to close the refrigerant channel 11 of the end liquid cooling plate 1. Similarly, the end male end pressing plate 4 is also provided with a pipe joint 23, other structures are consistent with the male end pressing plate 21, and the end male end pressing plate 4 is matched with a female end pressing plate 22 arranged on the left side of the rearmost section and used for closing the refrigerant channel 11 of the rearmost liquid cooling plate 1.
Further, a plurality of corresponding connection holes 26 are further formed on the male end pressing plate 21 and the female end pressing plate 22.
Further, the sealing strips 24 on the male end pressing plate 21 surround the hollow space 27 on the left, right and lower sides. The cooperation of sealing strip 24 and seal groove 25 can effectually seal cavity 27 in the water course clamp plate subassembly 2, avoids the refrigerant to reveal.
Further, the connection end 13 is provided with a liquid cooling plate positioning opening 14, and the male end pressing plate 21 is provided with a liquid cooling plate positioning portion 28 matched with the liquid cooling plate positioning opening 14.
Further, the liquid cooling plate positioning portion 28 is disposed at the upper end of the sealing strip 24 of the male end pressing plate 21, and extends horizontally inward into the cavity 27. The liquid cooling plate positioning part 28 extending into the cavity is matched with the liquid cooling plate positioning opening 14 of the connecting end part 13, so that the relative movement of the liquid cooling plate 1 and the water channel pressing plate assembly 2 in the vertical direction is limited, and the sealing effect of the sealing strip 24 and the sealing groove 25 is further ensured.
Furthermore, the two ends of the pipe joint 23 and the connecting pipe 3 are two-way water-stopping quick-plug connectors. Therefore, in the grouping process, the bidirectional water stop joint can be quickly installed, and the leakage of the connecting pipe 3 and the pipe joint 23 in the pulling-inserting connection process can be prevented, so that potential safety hazards are generated in the battery cell.
Further, a threaded connection member is provided on the connection hole 26. After each water channel pressing plate assembly 2 and the liquid cooling plate 1 are installed, bolts penetrate through the connecting holes 26, the other ends of the water channel pressing plate assemblies are locked by nuts, so that the sealing strips 24 are completely attached to the sealing grooves 25, meanwhile, the male end pressing plate 21 is tightly attached to the female end pressing plate 22, and the sealing effect is guaranteed.
Further, a section of corrugated pipe 31 is arranged on the connecting pipe 3, and the connecting pipe 3 is sleeved on the pipe joint 23 connected with the adjacent water channel pressing plate assemblies 2, so that each water channel pressing plate assembly 2 is communicated; in order to adapt to and contain the position and dimensional tolerance between the adjacent liquid cooling plates 1 and the electric core arranged in the liquid cooling plates, the middle part of each connecting pipe 3 is provided with a section of corrugated pipe 31; in this embodiment, the bellows 31 has a certain elasticity, so as to meet the position and dimensional tolerance between each two adjacent liquid cooling plates 1 and the electric core arranged therein, and the bellows can absorb shock, so as to ensure the structural strength of liquid cooling. The material of the connecting pipe 3 is not particularly limited, and in consideration of the application scenario in the battery system, corrosion resistance and insulation are required, so in this embodiment, the material of the connecting pipe 3 is plastic, specifically PA66+ GF30 material, that is, glass fiber reinforced plastic, so as to prevent the connecting pipe 3 from being corroded during long-term use.
The utility model also provides a battery pack, which comprises a battery shell, a battery pack liquid cooling and heat dissipation non-welding grouping structure in the shell and a plurality of battery cells, wherein the specific structure of the battery pack liquid cooling and heat dissipation non-welding grouping structure refers to the embodiment, and the battery pack adopts all the technical schemes of all the embodiments, so that the battery pack has at least all the beneficial effects brought by the technical schemes of the embodiments, and is not repeated herein.
The utility model also provides a power battery box, which comprises the battery pack, and the specific structure of the battery pack refers to the embodiment, and because the container type battery system adopts all the technical schemes of the embodiment, the container type battery system at least has the beneficial effects of the technical schemes of the embodiment, and the detailed description is omitted.
The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (10)
1. The utility model provides a group structure is not welded in group of group's liquid cooling heat dissipation which characterized in that:
the battery pack comprises a plurality of liquid cooling plates, wherein a space for accommodating a plurality of battery cells is arranged between the liquid cooling plates, two connecting end parts extending downwards are arranged at the lower parts of the liquid cooling plates, refrigerant channels are arranged in the liquid cooling plates, and two refrigerant channel openings communicated with the outside are formed in the connecting end parts of the refrigerant channels;
the multi-group water channel pressing plate assembly comprises a male end pressing plate and a female end pressing plate which are arranged at the connecting end part in a pairwise manner,
a connecting pipe for connecting adjacent water channel pressing plate components,
the male end pressing plate at the end part is used for being matched with the female end pressing plate arranged at one side end part to seal the refrigerant passage of the liquid cooling plate,
and an end female end pressing plate for sealing the refrigerant passage of the liquid cooling plate by the male end pressing plate arranged at the end of the other side,
the water channel pressing plate assembly is arranged at the connecting end part, wherein pipe joints are arranged on the male end pressing plate and the female end pressing plate, sealing strips protruding outwards are arranged on the male end pressing plate, sealing grooves matched with the sealing strips are arranged on the female end pressing plate, after the male end pressing plate and the female end pressing plate are combined, a cavity for accommodating the connecting end part is formed in the female end pressing plate, and the cavity is communicated with the refrigerant channel and the pipe joints.
2. The battery pack liquid cooling heat dissipation non-welding grouping structure according to claim 1, wherein a plurality of connecting holes corresponding to one another are further formed in the male end pressing plate and the female end pressing plate.
3. The battery pack liquid cooling heat dissipation solderless unitized structure of claim 1, wherein the sealing strip on the male end pressure plate surrounds the cavity on the left side, right side and below.
4. The battery pack liquid cooling heat dissipation non-welding grouping structure according to claim 1, wherein a liquid cooling plate positioning opening is formed in the connecting end portion, and a liquid cooling plate positioning portion matched with the liquid cooling plate positioning opening is arranged on the male end pressing plate.
5. The battery pack liquid cooling heat dissipation non-welding unitized structure of claim 4 wherein said liquid cooling plate positioning portion is disposed at an upper end of said sealing strip of said male end pressure plate and extends horizontally inwardly into said cavity.
6. The battery pack liquid cooling heat dissipation non-welding grouping structure according to claim 1, wherein the pipe joint and the two ends of the connecting pipe are two-way water stop quick connectors.
7. The battery pack liquid cooling heat dissipation non-welding grouping structure according to claim 2, wherein the connecting hole is provided with a threaded connecting piece.
8. The battery pack liquid cooling heat dissipation non-welding grouping structure according to claim 1, wherein a section of corrugated pipe is arranged on the connecting pipe.
9. A battery pack, comprising a battery shell, a battery pack liquid cooling heat dissipation non-welding grouping structure and an electric core, wherein the battery pack liquid cooling heat dissipation non-welding grouping structure is arranged in the battery shell, and the battery pack liquid cooling heat dissipation non-welding grouping structure comprises the battery pack liquid cooling heat dissipation non-welding grouping structure according to any one of claims 1-8.
10. A power cell box comprising the battery pack of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223022359.8U CN218996851U (en) | 2022-11-15 | 2022-11-15 | Liquid cooling heat dissipation non-welding grouping structure of battery pack, battery pack and power battery box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223022359.8U CN218996851U (en) | 2022-11-15 | 2022-11-15 | Liquid cooling heat dissipation non-welding grouping structure of battery pack, battery pack and power battery box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218996851U true CN218996851U (en) | 2023-05-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223022359.8U Active CN218996851U (en) | 2022-11-15 | 2022-11-15 | Liquid cooling heat dissipation non-welding grouping structure of battery pack, battery pack and power battery box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218996851U (en) |
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2022
- 2022-11-15 CN CN202223022359.8U patent/CN218996851U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 400000 No. 107, datagu Middle Road, Xiantao street, Yubei District, Chongqing Patentee after: Chongqing Gengchen Energy Technology Co.,Ltd. Country or region after: China Address before: 400000 No. 107, datagu Middle Road, Xiantao street, Yubei District, Chongqing Patentee before: Chongqing Three Gorges Times Energy Technology Co.,Ltd. Country or region before: China |
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