CN219575790U

CN219575790U - Double-layer power battery shell with cooling structure

Info

Publication number: CN219575790U
Application number: CN202320346295.2U
Authority: CN
Inventors: 邵峰; 王景兵; 张梅菊
Original assignee: Nanjing Lightway Lightweight Technology Research Institute Co ltd
Current assignee: Nanjing Lightway Lightweight Technology Research Institute Co ltd
Priority date: 2023-02-28
Filing date: 2023-02-28
Publication date: 2023-08-22
Anticipated expiration: 2033-02-28

Abstract

The utility model relates to a double-layer power battery shell with a cooling structure, which comprises an upper shell and a lower shell, wherein the upper shell and the lower shell are mechanically connected to form a closed cavity for placing a power battery, and the double-layer power battery shell also comprises: the radiator is arranged between the upper shell and the lower shell, the upper shell is provided with a first cavity for placing one layer of power battery, the lower shell is provided with a second cavity for placing the other layer of power battery, and the radiator is positioned between the two layers of power batteries; the radiator is provided with a cooling liquid inlet, a cooling liquid outlet, at least one cooling cavity and at least one diversion groove, wherein the cooling liquid inlet and the cooling liquid outlet are respectively communicated with the cooling cavity and used for realizing in-out circulation cooling of cooling liquid, and the diversion groove is used for diversion and heat dissipation of the cooling liquid. The radiator with the cooling cavity and the diversion grooves has the advantages of reasonable structural design, good cooling effect, convenient replacement of the sealing gasket and good maintainability, and improves the safety and the reliability.

Description

Double-layer power battery shell with cooling structure

Technical Field

The utility model belongs to the technical field of new energy automobile manufacturing, and relates to a double-layer power battery shell with a cooling structure.

Background

With the rapid development of new energy automobile manufacturing technologies, the application of power batteries in new energy automobiles is becoming more popular, with the continuous improvement of the requirements on the endurance of new energy automobiles, the requirements on the number and the energy density of the power batteries are continuously increasing, and vehicle accidents caused by spontaneous combustion of the power batteries are frequent, in the prior art, insufficient tightness of the power battery shell and overheating of the battery shell are one of the important factors causing spontaneous combustion of the power batteries, especially for multi-layer power battery modules, the arrangement layout, cooling and tightness of the power battery shell are important factors to be considered, and the optimal design is required according to the factors such as actual space and structure, so that a novel power battery shell is needed to solve the problems.

Disclosure of Invention

The utility model aims to provide a double-layer power battery shell with a cooling structure, which solves the cooling problem of the double-layer power battery shell by utilizing a radiator with a cooling cavity and a diversion channel, has good reliability and safety, and effectively meets the specific requirements of users.

To achieve the above object, an embodiment of the present utility model provides a dual-layer power battery housing with a cooling structure, including an upper housing and a lower housing, where the upper housing and the lower housing are mechanically connected to form a sealed cavity for placing a power battery, unlike the prior art, the present utility model further includes: the radiator is arranged between the upper shell and the lower shell and is mechanically connected with the upper shell and the lower shell, the upper shell is provided with a first cavity for placing one layer of power battery, the lower shell is provided with a second cavity for placing another layer of power battery, and the radiator is positioned between the two layers of power batteries and used for realizing heat dissipation of the upper layer of power battery and the lower layer of power battery; the radiator is provided with a cooling liquid inlet, a cooling liquid outlet, at least one cooling cavity and at least one diversion channel, wherein the cooling liquid inlet and the cooling liquid outlet are respectively communicated with the cooling cavity and used for realizing in-out circulating cooling of cooling liquid, and the diversion channel is used for diversion of the cooling liquid.

Further, the method further comprises the following steps: the heat radiator comprises a lower shell, a radiator, a first sealing gasket and a second sealing gasket, wherein the first sealing gasket is arranged at a contact position between the radiator and the upper shell, and the second sealing gasket is arranged at a contact position between the radiator and the lower shell.

Further, the upper shell is further provided with an upper shell flanging, the lower shell is further provided with a lower shell flanging, the radiator is further provided with a pressing edge, the upper shell flanging is in surface contact connection with the first sealing gasket, and the lower shell flanging is in surface contact connection with the second sealing gasket.

Further, the first sealing gasket and the second sealing gasket are made of elastic materials.

Further, the upper shell is further provided with a first opening and a second opening, the first opening is mechanically matched and connected with the cooling liquid inlet, and the second opening is mechanically matched and connected with the cooling liquid outlet.

Further, the method further comprises the following steps: the first fixing frame is arranged in the first cavity and used for fixing one layer of power battery, and the second fixing frame is arranged in the second cavity and used for fixing the other layer of power battery.

The utility model relates to a double-layer power battery shell with a cooling structure, which has the beneficial effects that: the utility model has reasonable structural design and good cooling effect, ensures the tightness of the power battery shell by utilizing the sealing gasket, and has convenient replacement and good maintainability; the radiator with the cooling cavity and the diversion grooves realizes good cooling effect of the power battery shell, improves safety and reliability, and meets specific requirements of users on the power battery shell of the new energy automobile.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following brief description of the drawings of the embodiments will make it apparent that the drawings in the following description relate only to some embodiments of the present utility model and are not limiting of the present utility model.

Fig. 1 is an exploded view of a double-layered power battery case with a cooling structure according to an embodiment of the present utility model;

fig. 2 is a schematic perspective view of a double-layer power battery case with a cooling structure according to an embodiment of the present utility model;

fig. 3 is a front view of a radiator according to an embodiment of the present utility model;

FIG. 4 is a cross-sectional view of a heat sink according to an embodiment of the present utility model;

fig. 5 is an enlarged partial schematic view of the portion B in fig. 4.

In the figure:

1. an upper housing; 11. a first cavity; 12. the upper shell is turned; 13. a first opening; 14. a second opening; 2. a lower housing; 21. a second cavity; 22. the lower shell is turned; 3. a heat sink; 31. a cooling liquid inlet; 32. a cooling liquid outlet; 33. a cooling chamber; 34. edge pressing; 35. a shunt channel; 4. a first gasket; 5. a second gasket; 6. a first fixing frame; 7. and the second fixing frame.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present utility model fall within the protection scope of the present utility model.

Unless defined otherwise, technical or scientific terms used in this disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. It should be noted that the positional or positional relationship indicated by the terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in the utility model will be understood by those of ordinary skill in the art in a specific context.

A double-layered power battery case with a cooling structure according to an embodiment of the present utility model will be described in detail with reference to the accompanying drawings.

Examples

FIG. 1 illustrates an exploded view of a dual-layer power cell housing with cooling structure provided in an embodiment of the present utility model; fig. 2 is a schematic perspective view of a double-layer power battery case with a cooling structure according to an embodiment of the present utility model; FIG. 3 illustrates a front view of a heat sink provided by an embodiment of the present utility model; FIG. 4 shows a cross-sectional view of a heat sink provided by an embodiment of the present utility model; fig. 5 shows a partially enlarged schematic view of portion B of fig. 4. As shown in fig. 1 to 5, the double-layer power battery housing with a cooling structure provided in the embodiment of the present utility model generally includes an upper housing 1 and a lower housing 2, and generally, the upper housing 1 and the lower housing 2 are mechanically connected to form a sealed cavity for placing a power battery, where the power battery may be designed into one or more layers according to specific situations, and fig. 1 shows a structure in which the power battery has two layers, unlike the prior art, the double-layer power battery housing with a cooling structure provided in the embodiment of the present utility model further includes: the radiator 3 is arranged between the upper shell 1 and the lower shell 2 and is mechanically connected with the upper shell 1 and the lower shell 2, the upper shell 1 is provided with a first cavity 11 for placing one layer of power battery, the lower shell 2 is provided with a second cavity 21 for placing another layer of power battery, the radiator 3 is positioned between the two layers of power batteries and used for realizing heat dissipation of the upper layer of power battery and the lower layer of power battery, and meanwhile, the radiator 3 also plays a role in supporting and fixing the two layers of power batteries; specifically, the radiator 3 is provided with a cooling liquid inlet 31, a cooling liquid outlet 32 and at least one cooling cavity 33, the cooling liquid inlet 31 and the cooling liquid outlet 32 are respectively communicated with the cooling cavity 33 and used for realizing the in-out circulation cooling of cooling liquid, the cooling liquid inlet 31 and the cooling liquid outlet 32 are respectively connected with an external cooling system through pipelines, so that cooling liquid enters from the cooling liquid inlet 31 and passes through the circulation cooling of the cooling cavities 33 and finally flows out from the cooling liquid outlet 32, and therefore the radiator 3 can have a better cooling effect on power batteries positioned on the upper side and the lower side of the radiator, the temperature of a power battery shell is reduced, and heat aggregation is reduced. Further, in order to improve the cooling effect, the radiator 3 is further provided with the diversion grooves 35, the diversion grooves 35 are formed in the surface of the radiator, the inside of the radiator 3 is divided into a plurality of cooling cavities 33 by the diversion grooves 35, the cooling cavities 33 are mutually communicated, the upper surface and the lower surface of the radiator 3 are attached together at the diversion grooves 35 through the arrangement of the diversion grooves 35, and when the cooling liquid flows in the radiator 3, the diversion is realized at the diversion grooves 35, so that the cooling liquid is distributed more uniformly in the radiator 3, the heat dissipation area of the radiator 3 is larger, and the cooling effect is improved.

The double-layer power battery shell with the cooling structure provided by the embodiment of the utility model further comprises: a first gasket 4 and a second gasket 5, wherein the first gasket 4 is arranged at the contact position between the radiator 3 and the upper shell 1, and the second gasket 5 is arranged at the contact position between the radiator 3 and the lower shell 2. More specifically, the upper shell 1 is further provided with an upper shell flanging 12, the lower shell 2 is further provided with a lower shell flanging 22, the radiator 3 is further provided with a pressing edge 34, the pressing edge 34 is positioned at the edge of the radiator 3, the upper shell flanging 12 and the pressing edge 34 are in surface contact connection with the first sealing gasket 4, the lower shell flanging 22 and the pressing edge 34 are in surface contact connection with the second sealing gasket 5, so that the contact and sealing of the upper shell 1 and the radiator 3 at the pressing edge 34 are realized by using the first sealing gasket 4, and the contact and sealing of the lower shell 2 and the radiator 3 at the pressing edge 34 are realized by using the second sealing gasket 5; generally, the widths of the upper shell flange 12 and the pressing edge 34 are adapted to the width of the first sealing gasket 4, and the widths of the lower shell flange 22 and the pressing edge 34 are adapted to the width of the second sealing gasket 5, so that the sealing gasket with a certain width deforms after being stressed, and a good sealing effect of the power battery shell is achieved by using a larger contact area.

In the double-layer power battery housing with the cooling structure provided in the embodiment of the present utility model, preferably, the first sealing pad 4 and the second sealing pad 5 are made of an elastic material, for example: elastic materials such as rubber, foam, and polytetrafluoroethylene, including but not limited to the above materials, are brought into close contact with the upper case 1, the lower case 2, and the heat sink 3 by using elastic deformation of the first gasket 4 and the second gasket 5 to achieve sealing of the power battery case.

In the double-layer power battery shell with the cooling structure provided by the embodiment of the utility model, the upper shell 1 is also provided with the first opening 13 and the second opening 14, the first opening 13 is mechanically matched and connected with the cooling liquid inlet 31, the second opening 14 is mechanically matched and connected with the cooling liquid outlet 32, and the positions of the first opening 13 and the second opening 14 are sealed; the cooling liquid inlet 31 and the cooling liquid outlet 32 extend out of the power battery shell so as to be convenient for communicating with an external cooling system.

The double-layer power battery shell with the cooling structure provided by the embodiment of the utility model further comprises: the first fixing frame 6 and the second fixing frame 7, wherein the first fixing frame 6 is arranged in the first cavity 11 and used for fixing one layer of power battery, and the second fixing frame 7 is arranged in the second cavity 21 and used for fixing the other layer of power battery. The specific structural forms of the first fixing frame 6 and the second fixing frame 7 are adapted to the shape of the power battery and the structural forms of the upper shell 1 and the lower shell 2, fig. 1 shows a circular power battery arrangement form, and the first fixing frame 6 and the second fixing frame 7 are correspondingly designed and fixed according to the outline structure of the circular power battery; of course, if the power battery is square, the corresponding first fixing frame 6 and the corresponding second fixing frame 7 need corresponding structural changes.

Compared with the prior art, the double-layer power battery shell with the cooling structure has reasonable structural design and good cooling effect, ensures the tightness of the power battery shell by utilizing the sealing gasket, and is convenient to replace and good in maintainability; the radiator 3 with the cooling cavity 33 and the diversion grooves 35 realizes good cooling effect of the double-layer power battery shell, improves safety and reliability, and meets specific requirements of users.

The following points need to be described:

(1) Unless otherwise defined, like reference numerals refer to like meanings in the embodiments of the utility model and the figures.

(2) The drawings of the embodiments of the present utility model relate only to the structures related to the embodiments of the present utility model, and other structures may refer to the general designs.

(3) In the drawings for describing embodiments of the present utility model, some of the structures in the drawings may be exaggerated or reduced for clarity, i.e., the drawings are not drawn to actual scale.

(4) The embodiments of the utility model and the features of the embodiments can be combined with each other to give new embodiments without conflict.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a double-deck power battery casing with cooling structure, includes casing (1), lower casing (2), go up casing (1) with lower casing (2) carry out mechanical connection and form airtight cavity and be used for placing power battery, its characterized in that still includes: the radiator (3), the radiator (3) is arranged between the upper shell (1) and the lower shell (2) and is mechanically connected with the upper shell (1) and the lower shell (2), the upper shell (1) is provided with a first cavity (11) for placing one layer of power battery, the lower shell (2) is provided with a second cavity (21) for placing another layer of power battery, and the radiator (3) is positioned between the two layers of power batteries and is used for realizing heat dissipation of the upper layer of power battery and the lower layer of power battery; the radiator (3) is provided with a cooling liquid inlet (31), a cooling liquid outlet (32), at least one cooling cavity (33) and at least one diversion groove (35), the cooling liquid inlet (31) and the cooling liquid outlet (32) are respectively communicated with the cooling cavity (33) for realizing in-out circulating cooling of cooling liquid, and the diversion groove (35) is used for diversion of the cooling liquid.

2. The double-layered power cell casing with a cooling structure according to claim 1, further comprising: the heat radiator comprises a first sealing gasket (4) and a second sealing gasket (5), wherein the first sealing gasket (4) is arranged at a contact position between the heat radiator (3) and the upper shell (1), and the second sealing gasket (5) is arranged at a contact position between the heat radiator (3) and the lower shell (2).

3. The double-layer power battery housing with the cooling structure according to claim 2, characterized in that the upper housing (1) is further provided with an upper housing flange (12), the lower housing (2) is further provided with a lower housing flange (22), the heat sink (3) is further provided with a press edge (34), the upper housing flange (12), the press edge (34) and the first sealing gasket (4) are in surface contact connection, and the lower housing flange (22), the press edge (34) and the second sealing gasket (5) are in surface contact connection.

4. The double-layer power battery case with the cooling structure according to claim 2, characterized in that the material of the first gasket (4) and the second gasket (5) is an elastic material.

5. The double-layer power battery housing with cooling structure according to claim 1, characterized in that the upper housing (1) is further provided with a first opening (13), a second opening (14), the first opening (13) being mechanically coupled with the cooling fluid inlet (31), the second opening (14) being mechanically coupled with the cooling fluid outlet (32).

6. The double-layered power cell casing with a cooling structure according to any one of claims 1 to 5, further comprising: the power battery fixing device comprises a first fixing frame (6) and a second fixing frame (7), wherein the first fixing frame (6) is arranged in a first cavity (11) and used for fixing one layer of power battery, and the second fixing frame (7) is arranged in a second cavity (21) and used for fixing the other layer of power battery.