CN220984630U - Double-sided liquid cooling battery pack - Google Patents
Double-sided liquid cooling battery pack Download PDFInfo
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- CN220984630U CN220984630U CN202322724042.7U CN202322724042U CN220984630U CN 220984630 U CN220984630 U CN 220984630U CN 202322724042 U CN202322724042 U CN 202322724042U CN 220984630 U CN220984630 U CN 220984630U
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- liquid cooling
- cooling plate
- battery pack
- double
- liquid
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- 239000007788 liquid Substances 0.000 title claims abstract description 151
- 238000001816 cooling Methods 0.000 title claims abstract description 143
- 208000029152 Small face Diseases 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 6
- 239000006260 foam Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 230000017525 heat dissipation Effects 0.000 abstract description 20
- 238000012545 processing Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 9
- 239000002826 coolant Substances 0.000 description 7
- 229920000742 Cotton Polymers 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Secondary Cells (AREA)
Abstract
The utility model relates to the technical field of liquid cooling battery packs and provides a double-sided liquid cooling battery pack which comprises a box body, an upper liquid cooling plate and a battery cell group, wherein the box body comprises a frame, an upper cover and a lower liquid cooling plate, and the upper cover and the lower liquid cooling plate are respectively fixedly arranged on the upper side and the lower side of the frame; the upper liquid cooling plate and the battery cell group are arranged in the frame, and two sides of the battery cell group are respectively abutted against the lower liquid cooling plate and the upper liquid cooling plate. According to the utility model, the upper liquid cooling plate and the lower liquid cooling plate are arranged, and the lower liquid cooling plate is used as the bottom of the box body, so that double-layer heat dissipation of the battery pack is realized, the structure inside the battery pack is simplified, the processing cost of the battery pack is reduced, and the energy density of the battery pack is improved.
Description
Technical Field
The utility model relates to the technical field of liquid cooling battery packs, in particular to a double-sided liquid cooling battery pack.
Background
With the development of new energy industry, more and more consumers begin to select new energy automobiles, the requirements on the endurance and safety performance of the new energy automobiles are also higher, and the heat dissipation of the battery pack is an important factor affecting the endurance and safety performance of the new energy automobiles, so that the problem of heat dissipation of the battery pack is an important subject in the development of the new energy automobiles.
The utility model of patent publication No. CN216624390U discloses a power battery pack of a fuel cell hydrogen energy automobile, which adopts a double-layer liquid cooling structure, and the heat management efficiency can be improved by more than 30%; and the double-layer liquid cooling plate structure is tightly and uniformly covered on the upper side and the lower side of the battery system, and the consistency of the temperature of the single battery cell can be better controlled, so that the service life of the battery system is prolonged.
In the above technical scheme, in order to promote the radiating effect of battery package, it has set up the double-deck liquid cooling structure of constituteing by last liquid cooling board and lower liquid cooling board, but the mode of using two liquid cooling boards not only can increase the spare part quantity of battery package, increases the processing cost of battery package, still can reduce the energy density of battery package.
Disclosure of utility model
In view of this, the present utility model provides a double-sided liquid-cooled battery pack, which can simplify the internal structure of the battery pack and increase the energy density of the battery pack.
The technical scheme of the utility model is realized as follows: the utility model provides a double-sided liquid cooling battery pack, which comprises a box body, an upper liquid cooling plate and a battery cell group, wherein,
The box body comprises a frame, an upper cover and a lower liquid cooling plate, wherein,
The upper cover and the lower liquid cooling plate are respectively fixedly arranged on the upper side and the lower side of the frame;
the upper liquid cooling plate and the battery cell group are arranged in the frame, and two sides of the battery cell group are respectively abutted against the lower liquid cooling plate and the upper liquid cooling plate.
On the basis of the technical scheme, preferably, a plurality of strip-shaped first liquid cooling cavities are formed in the lower liquid cooling plate.
Still more preferably, an S-shaped second liquid cooling cavity is formed in the upper liquid cooling plate.
Still further preferably, the box further includes a liquid cooling pipe, the liquid cooling pipe is fixed on the frame in a penetrating manner, and two ends of the first liquid cooling cavity and two ends of the second liquid cooling cavity are respectively communicated with the two liquid cooling pipes.
Still further preferably, the second liquid cooling chamber comprises a plurality of straight sections and a plurality of C-shaped sections, wherein,
The straight sections are parallel and are arranged at intervals, and the straight sections are perpendicular to the first liquid cooling cavity;
The C-shaped section is arranged between two adjacent straight sections and communicated with the two straight sections.
Still further preferably, the lower liquid cooling plate includes a plurality of liquid dividing plates, the liquid dividing plates are fixedly arranged on the frame, and the plurality of liquid dividing plates are arranged side by side.
On the basis of the above technical scheme, preferably, the battery cell group comprises a plurality of battery cells, the battery cells are provided with two layers, and one side of each battery cell is abutted against the lower liquid cooling plate or the upper liquid cooling plate.
Still further preferably, the side surface of the battery cell includes two opposite large faces and two opposite small faces, the area of the large faces is not smaller than that of the small faces, and one of the large faces abuts against the lower liquid cooling plate or the upper liquid cooling plate.
Still further preferably, the battery cell group further comprises a heat insulation pad, and the heat insulation pad is fixedly arranged in the middle of the two layers of the battery cells.
On the basis of the technical scheme, the foam is preferably further arranged between the upper cover and the upper liquid cooling plate in a propping mode.
Compared with the prior art, the double-sided liquid cooling battery pack has the following beneficial effects:
(1) By arranging the upper liquid cooling plate and the lower liquid cooling plate and using the lower liquid cooling plate as the bottom of the box body, double-layer heat dissipation of the battery pack is realized, the structure inside the battery pack is simplified, the processing cost of the battery pack is reduced, and the energy density of the battery pack is improved;
(2) The S-shaped second liquid cooling cavity is arranged in the upper liquid cooling plate, the strip-shaped first liquid cooling cavity is arranged in the lower liquid cooling plate, two ends of the first liquid cooling cavity and the second liquid cooling cavity are respectively communicated with the two liquid cooling pipes, the large surface of the battery core is abutted against the upper liquid cooling plate or the lower liquid cooling plate, the heat dissipation efficiency of the two liquid cooling plates can be improved, and the heat dissipation effect of the battery pack is guaranteed;
(3) Through setting up the bubble cotton, can support to last liquid cooling board and hold, avoid it to take place vibrations in the use, promoted the safety in utilization of this battery package.
Drawings
In order to more clearly illustrate the embodiments of the 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, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an exploded view of a double-sided liquid-cooled battery pack of the present utility model;
FIG. 2 is an exploded view of the case of the dual-sided liquid-cooled battery pack of the present utility model;
FIG. 3 is a perspective view of a cell stack in a dual sided liquid cooled battery pack of the present utility model;
FIG. 4 is an enlarged view of FIG. 3 at A;
FIG. 5 is a cross-sectional view of the lower liquid cooling plate in the double-sided liquid-cooled battery pack of the present utility model;
fig. 6 is a perspective view of a cell in a double-sided liquid-cooled battery pack of the present utility model.
Wherein: 1. a case; 11. a frame; 12. a liquid-cooled tube; 13. an upper cover; 14. a lower liquid cooling plate; 141. a liquid-separating cooling plate; 101. a first liquid cooling chamber; 2. a liquid cooling plate is arranged on the upper part; 201. a second liquid cooling chamber; 2011. a straight section; 2012. a C-shaped section; 3. a cell group; 31. a battery cell; 32. a heat insulating mat; 301. large surface; 302. facets; 4. and soaking cotton.
Detailed Description
The following description of the embodiments of the present utility model will be made in detail and with reference to specific embodiments of the present utility model, but it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model.
As shown in fig. 1-6, the double-sided liquid-cooled battery pack of the utility model comprises a box body 1, an upper liquid-cooled plate 2, a battery cell group 3 and foam 4.
The box body 1 is a protection structure of a battery pack, and the box body 1 comprises a frame 11, a liquid cooling pipe 12, an upper cover 13 and a lower liquid cooling plate 14, wherein the liquid cooling pipe 12 penetrates through and is fixed on the frame 11; the upper cover 13 and the lower liquid cooling plate 14 are respectively fixedly arranged on the upper side and the lower side of the frame 11; as shown in fig. 2, the lower liquid cooling plate 14 serves as the bottom side of the case 1, and does not need to use a bottom guard plate and fix the bottom guard plate, so that the number of parts in the battery pack is reduced, the energy density in the battery pack is improved, the manufacturing process of the battery pack is simplified, and the processing cost of the battery pack is reduced.
The upper liquid cooling plate 2 and the lower liquid cooling plate 14 are matched to realize double-layer heat dissipation inside the battery pack, and the upper liquid cooling plate 2 is arranged in the frame 11.
The battery cell group 3 is a core component of the battery pack, most of heat is sourced from the battery cell group 3 in the use process of the battery pack, the battery cell group 3 is arranged in the frame 11, and two sides of the battery cell group 3 are respectively abutted against the lower liquid cooling plate 14 and the upper liquid cooling plate 2; as shown in fig. 1, with this structure, the upper liquid cooling plate 2 and the lower liquid cooling plate 14 can be used to dissipate heat from the upper and lower sides of the battery pack 3, so as to improve the heat dissipation effect of the battery pack.
In order to improve the heat dissipation effect on the battery pack, as shown in fig. 3-5, a plurality of strip-shaped first liquid cooling cavities 101 can be formed in the lower liquid cooling plate 14, and an S-shaped second liquid cooling cavity 201 is formed in the upper liquid cooling plate 2, and two ends of the first liquid cooling cavity 101 and two ends of the second liquid cooling cavity 201 are respectively communicated with two liquid cooling pipes 12; when the cooling medium flows in the cooling channel under the influence of heat, the temperature of the cooling medium gradually increases, the longer the flowing distance of the cooling medium in the cooling channel is, the worse the heat dissipation effect is, by adopting the structure, a plurality of first liquid cooling cavities 101 and second liquid cooling cavities 201 can be connected in parallel, compared with the existing serial connection mode, the heat dissipation effect is better, meanwhile, as the bottom of the box body 1 is usually abutted against the mounting structure of the battery pack, namely, the lower liquid cooling plate 14 is abutted against the mounting structure of the battery pack, the heat dissipation environment is not the heat dissipation environment of the upper liquid cooling plate 2, the second liquid cooling cavities 201 are set into an S shape with longer channel distance, and the first liquid cooling cavities 101 are set into a strip shape with shorter distance, so that the heat dissipation uniformity of the upper liquid cooling plate 2 and the lower liquid cooling plate 14 to the battery pack 3 can be improved, and the heat dissipation uniformity of the battery pack is improved.
As shown in fig. 3 and 4, the second liquid cooling chamber 201 is S-shaped, and includes a plurality of straight sections 2011 and a plurality of C-shaped sections 2012, the plurality of straight sections 2011 are parallel and spaced apart, and the straight sections 2011 are perpendicular to the first liquid cooling chamber 101; the C-shaped section 2012 is arranged between and communicated with two adjacent straight sections 2011; by restricting the flow direction of the liquid cooling medium in the second liquid cooling cavity 201 and the flow direction of the liquid cooling medium in the first liquid cooling cavity 101, the heat dissipation uniformity inside the battery pack can be improved, and the problem that the temperature of one part of the battery pack is far higher than that of the other part of the battery pack can be avoided.
As shown in fig. 2 and 3, the lower liquid cooling plate 14 may be configured to include a plurality of liquid cooling plates 141, where the liquid cooling plates 141 are fixedly disposed on the frame 11, and the plurality of liquid cooling plates 141 are disposed side by side, so that the lower liquid cooling plate 14 is integrated into a complex structure, and the lower liquid cooling plate 14 can be individually replaced after being damaged by an external force, thereby reducing maintenance cost of the battery pack.
For the number of the battery cell groups 3, the battery cell groups 3 can be set to comprise a plurality of battery cells 31 and heat insulation pads 32, the battery cells 31 are preferably set to be two layers, each layer is arranged in a matrix manner, one side of each battery cell 31 is abutted against the lower liquid cooling plate 14 or the upper liquid cooling plate 2, as shown in fig. 1, the plurality of battery cells 31 of the upper layer are abutted against the upper liquid cooling plate 2, and the plurality of battery cells 31 of the lower layer are abutted against the lower liquid cooling plate 14, so that each battery cell 31 is abutted against a heat dissipation structure, and the heat dissipation effect of each battery cell 31 is ensured; the heat insulation pad 32 is fixedly arranged in the middle of the two layers of the battery cells 31, so that the heat transfer amount between the two layers of the battery cells 31 is reduced.
The electric core 31 refers to a square electric core, which comprises two end faces and four side faces, the side faces of the electric core 31 are opposite to each other in pairs, the electric core 31 comprises two opposite large faces 301 and two opposite small faces 302, the area of the large faces 301 is not smaller than that of the small faces 302, for the arrangement mode of the electric core 31, one large face 301 of the electric core 31 is preferably abutted against the lower liquid cooling plate 14 or the upper liquid cooling plate 2, namely the electric core 31 is laterally placed, the heat dissipation effect of the electric core is guaranteed, and meanwhile the height space of the battery pack can be optimized.
The foam 4 is propped against and fixed between the upper cover 13 and the upper liquid cooling plate 2, so that the upper liquid cooling plate 2 is prevented from vibrating in the use process of the battery pack, and the use safety of the battery pack is improved.
The working principle of the double-sided liquid cooling battery pack is as follows:
After the two liquid cooling pipes 12 are respectively communicated with the inflow pipeline and the outflow pipeline of the liquid cooling medium, the liquid cooling medium can firstly enter the first liquid cooling cavity 101 and the second liquid cooling cavity 201 along one liquid cooling pipe 12 and then flow out along the other liquid cooling pipe 12, so that heat generated during the operation of the battery cell group 3 is absorbed and carried away, and a good heat dissipation effect is realized.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (10)
1. Double-sided liquid cooling battery package, its characterized in that: comprises a box body (1), an upper liquid cooling plate (2) and a battery cell group (3), wherein,
The box body (1) comprises a frame (11), an upper cover (13) and a lower liquid cooling plate (14), wherein,
The upper cover (13) and the lower liquid cooling plate (14) are respectively and fixedly arranged on the upper side and the lower side of the frame (11);
The upper liquid cooling plate (2) and the battery cell group (3) are arranged in the frame (11), and two sides of the battery cell group (3) are respectively abutted against the lower liquid cooling plate (14) and the upper liquid cooling plate (2).
2. The double-sided liquid-cooled battery pack of claim 1, wherein: a plurality of strip-shaped first liquid cooling cavities (101) are formed in the lower liquid cooling plate (14).
3. The double-sided liquid-cooled battery pack of claim 2, wherein: an S-shaped second liquid cooling cavity (201) is formed in the upper liquid cooling plate (2).
4. The double-sided liquid-cooled battery pack of claim 3, wherein: the box body (1) further comprises a liquid cooling pipe (12), the liquid cooling pipe (12) is fixed on the frame (11) in a penetrating mode, and two ends of the first liquid cooling cavity (101) and two ends of the second liquid cooling cavity (201) are respectively communicated with the two liquid cooling pipes (12).
5. The double-sided liquid-cooled battery pack of claim 4, wherein: the second liquid cooling chamber (201) comprises a plurality of straight sections (2011) and a plurality of C-shaped sections (2012), wherein,
The plurality of straight sections (2011) are parallel and are arranged at intervals, and the straight sections (2011) are perpendicular to the first liquid cooling cavity (101);
The C-shaped section (2012) is arranged between and communicates with two adjacent straight sections (2011).
6. The double-sided liquid-cooled battery pack of any one of claims 1-5, wherein: the lower liquid cooling plate (14) comprises a plurality of liquid dividing plates (141), the liquid dividing plates (141) are fixedly arranged on the frame (11), and the liquid dividing plates (141) are arranged side by side.
7. The double-sided liquid-cooled battery pack of claim 1, wherein: the battery cell group (3) comprises a plurality of battery cells (31), the battery cells (31) are provided with two layers, and one side of each battery cell (31) is abutted against the lower liquid cooling plate (14) or the upper liquid cooling plate (2).
8. The double-sided liquid-cooled battery pack of claim 7, wherein: the side face of the battery cell (31) comprises two opposite large faces (301) and two opposite small faces (302), the area of the large faces (301) is not smaller than that of the small faces (302), and one large face (301) is abutted against the lower liquid cooling plate (14) or the upper liquid cooling plate (2).
9. The double-sided liquid-cooled battery pack of claim 8, wherein: the battery cell group (3) further comprises a heat insulation pad (32), and the heat insulation pad (32) is fixedly arranged between the two layers of battery cells (31).
10. The double-sided liquid-cooled battery pack of claim 1, wherein: the novel water heater further comprises foam (4), and the foam (4) is abutted and fixed between the upper cover (13) and the upper liquid cooling plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322724042.7U CN220984630U (en) | 2023-10-10 | 2023-10-10 | Double-sided liquid cooling battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322724042.7U CN220984630U (en) | 2023-10-10 | 2023-10-10 | Double-sided liquid cooling battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220984630U true CN220984630U (en) | 2024-05-17 |
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ID=91039909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322724042.7U Active CN220984630U (en) | 2023-10-10 | 2023-10-10 | Double-sided liquid cooling battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220984630U (en) |
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2023
- 2023-10-10 CN CN202322724042.7U patent/CN220984630U/en active Active
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