CN212517344U

CN212517344U - Battery pack shell and battery pack

Info

Publication number: CN212517344U
Application number: CN202020944398.5U
Authority: CN
Inventors: 陈荣康; 陈许超; 张海建; 唐丽娟; 张德磊; 曲凡多; 董汝帅; 张兴东
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2020-05-28
Filing date: 2020-05-28
Publication date: 2021-02-09
Anticipated expiration: 2030-05-28

Abstract

The utility model relates to a battery technology field discloses a battery package shell and battery package, the battery package shell includes the shell body, this internal holding cavity that can hold electric core that is provided with of shell, the holding cavity is equipped with the confession the exposed opening of the face that is provided with utmost point post of electric core, the shell body forms into a body structure. Be provided with the holding cavity that holds electric core in this battery package shell, improved the packaging efficiency of battery package. By arranging the battery pack shell provided by the utility model in the battery pack, the weight of the battery pack can be reduced, and the energy density of the battery pack can be improved; meanwhile, the assembling process of the battery pack can be simplified, and the assembling efficiency is improved.

Description

Battery pack shell and battery pack

Technical Field

The utility model relates to a battery technology field specifically relates to a battery package shell and battery package.

Background

The modern automobile industry is revolutionarily changing, that is, the traditional fuel automobile is gradually replaced by a new energy automobile, wherein a pure electric automobile is favored as one of the new energy automobiles, and a battery pack is increasingly researched as a main component of the electric automobile. The battery pack comprises a battery pack shell and a battery module assembled in the battery pack shell, wherein the battery module comprises a module shell and a battery core arranged in the module shell; therefore, the battery pack is heavy overall, and in the assembly process of the battery pack, the battery cell needs to be assembled in the module housing to form the battery module, and then the assembled battery module is assembled in the battery pack housing, so that the assembly efficiency of the battery pack is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the lower problem of packaging efficiency of the battery package that prior art exists, providing a battery package shell, being provided with the holding cavity who holds electric core in this battery package shell, improved the packaging efficiency of battery package.

In order to achieve the above object, an aspect of the present invention provides a battery pack case, the battery pack case includes a case body, this internal holding chamber that can hold electric core that is provided with of shell, the holding chamber is equipped with the confession the exposed opening of the face that is provided with utmost point post of electric core, shell body forms into a body structure.

Above-mentioned technical scheme, through this internal holding chamber that can hold electric core and make of casing the casing body structure that forms into an organic whole, like this, in the assembling process of battery package, can with the electric core direct mount of battery package in corresponding among the holding chamber to the packaging efficiency of battery package has been improved, and the structure of battery package has been simplified, has alleviateed the weight of battery package, is favorable to improving the energy density of battery package, makes the overall structure of battery package more firm simultaneously.

Preferably, a plurality of accommodating chambers capable of accommodating the corresponding battery cells are arranged in the housing body, and the accommodating chambers are arranged in parallel.

Preferably, the battery cell comprises a battery cell body and a pair of poles respectively arranged at two opposite sides of the battery cell body;

the shell body is cuboid, and two opposite side portions of the accommodating cavity are provided with a pair of openings respectively for exposing the surfaces of the battery cell, which are provided with the corresponding pole posts.

Preferably, the pair of openings are a first opening and a second opening, respectively;

the battery pack shell comprises a first cooling unit arranged at the top of the shell body, the first cooling unit comprises a first liquid cooling plate, a first channel for cooling liquid to flow is arranged in the first liquid cooling plate, the first channel extends in the direction from the first opening to the second opening, the end part, close to the first opening, of the first channel is formed into a first liquid inlet, and the end part, close to the second opening, of the first channel is formed into a first liquid outlet.

Preferably, the battery pack case includes a second cooling unit disposed at the bottom of the case body, the second cooling unit includes a second liquid cooling plate, a second channel for flowing of cooling liquid is disposed in the second liquid cooling plate, the second channel extends in a direction from the first opening to the second opening, and the second channel has a second liquid inlet and a second liquid outlet for respectively allowing the cooling liquid to enter and exit.

Preferably, one end of the second channel close to the second opening is formed as the second liquid inlet, and one end of the second channel close to the first opening is formed as the second liquid outlet;

the battery pack shell comprises a connecting plate arranged at the second opening, and a flow guide channel communicated with the corresponding first channel and the second channel is arranged in the connecting plate;

the battery pack shell comprises a sealing plate for sealing the first opening, the first liquid inlet and the second liquid outlet, and the sealing plate is provided with an inlet through which cooling liquid enters the first liquid inlet and an outlet through which the cooling liquid is discharged from the second liquid outlet.

Preferably, the first liquid cold plate is formed as a unitary structure with the housing body; and/or

The second liquid cooling plate and the shell body form an integral structure.

Preferably, the battery pack shell comprises a bottom shell, a containing cavity capable of containing the shell body is arranged in the bottom shell, a mounting opening is formed in the top end of the containing cavity, the battery pack shell comprises a sealing frame arranged on the mounting opening, and the sealing frame seals the mounting opening.

Preferably, the bottom shell includes an enclosing frame enclosing a peripheral wall of the housing body and a supporting boss connected to the enclosing frame and protruding toward the inside of the enclosing frame, the supporting boss can support the second liquid cooling plate, and the enclosing frame and the supporting boss together enclose to form the accommodating chamber.

The utility model discloses the second aspect provides a battery package, battery package includes the utility model provides a battery package shell and setting are in electric core in the battery package shell. By arranging the battery pack shell provided by the utility model in the battery pack, the weight of the battery pack can be reduced, and the energy density of the battery pack can be improved; meanwhile, the whole structure of the battery pack is simple, the assembling process of the battery pack can be simplified, and the assembling efficiency is improved.

Drawings

Fig. 1 is a schematic perspective view of a battery pack case according to a preferred embodiment of the present invention;

fig. 2 is an exploded view of the battery pack case shown in fig. 1;

fig. 3 is a perspective view of a case body of the battery pack case shown in fig. 1;

FIG. 4 is a schematic view of a portion of the structure shown at A in FIG. 3;

FIG. 5 is a schematic illustration of an exploded view of the housing body shown in FIG. 3;

fig. 6 is a schematic view of the entire structure of the bottom case of the battery pack case shown in fig. 1.

Description of the reference numerals

10-a battery pack housing; 11-sealing the frame; 12-a housing body; 120-a containment chamber; 122-an opening; 122 a-first opening; 13 a-sealing strip; 13 b-a glue layer; 140-a first liquid cold plate; 142-a second liquid cold plate; 16-a sealing plate; 160-inlet; 162-an outlet; 18-a bottom shell; 180-surrounding frame; 182-support bosses.

Detailed Description

In the present invention, the use of directional terms such as "upper, lower, left and right" in the absence of a contrary explanation generally means that the directions shown in the drawings and the practical application are understood, and "inner and outer" mean inner and outer of the outline of the component.

The utility model provides a battery package shell, combine to show in fig. 2 and fig. 5, battery package shell 10 includes housing body 12, and housing body 12 is provided with the holding cavity 120 that can hold electric core in, for example, single electric core can hold in corresponding holding cavity 120, if when there are a plurality of electric cores, a plurality of electric cores in the battery package can with a plurality of holding cavity 120 one-to-one, holding cavity 120 is equipped with the confession the exposed opening 122 of the face that is provided with utmost point post of electric core, can understand that, electric core can be held in corresponding holding cavity 120 by corresponding opening 122, and housing body 12 forms into a body structure, but housing body 12 is at the in-process integrated into one piece of preparation. Through set up the holding chamber 120 that can hold electric core in casing body 12 and make casing body 12 form structure as an organic whole, like this, in the assembling process of battery package, can with the electric core direct mount of battery package in corresponding holding chamber 120 to the packaging efficiency of battery package has been improved, and the structure of battery package has been simplified, the weight of battery package has been alleviateed, be favorable to improving the energy density of battery package, make the overall structure of battery package more firm simultaneously. A plurality of accommodating chambers 120 capable of accommodating the corresponding battery cells respectively can be arranged in the housing body 12, and thus, the accommodating chambers 120 can be integrated in the housing body 12, so that the overall structure is more stable.

In order to effectively utilize the internal space of the casing body 12 and facilitate the installation of the battery cell, the plurality of accommodating chambers 120 may be arranged in parallel, and when the casing body 12 is in a rectangular shape, the plurality of accommodating chambers 120 may be arranged along the length direction or the width direction of the casing body 12.

The battery cell can comprise a battery cell body and a pair of poles respectively arranged on two opposite sides of the battery cell body, that is, the poles are arranged on two sides of the battery cell, so that the size of the battery cell can be increased, and the energy density of the battery pack can be increased; the housing body 12 may be rectangular, and two opposite sides of the accommodating chamber 120 may be provided with a pair of openings 122 for exposing the surfaces of the battery cells, on which the corresponding poles are disposed, respectively. It should be noted that, at the openings 122 located on the same side, a bus bar and a flexible circuit board may be disposed. The pair of openings 122 may be a first opening 122a and a second opening, respectively.

In order to dissipate the heat generated by the battery cell in time, a first cooling unit may be disposed on the top of the housing body 12.

As shown in fig. 3, the first cooling unit may include a first liquid cooling plate 140, a first channel for flowing a cooling liquid such as cooling water may be disposed in the first liquid cooling plate 140, the first channel may extend in a direction from the first opening 122a to the second opening, an end of the first channel near the first opening 122a may be formed as a first liquid inlet for the cooling liquid to enter, and an end of the first channel near the second opening may be formed as a first liquid outlet for the cooling liquid to exit. Preferably, a plurality of first channels may be disposed in the first liquid cooling plate 140, and the plurality of first channels may be arranged in a direction consistent with the arrangement direction of the cells.

The first liquid-cooled plate 140 may be formed as a unitary structure with the housing body 12, which may reduce the weight of the battery pack housing 10 and may also facilitate the overall robustness of the battery pack housing 10.

In addition, a second cooling unit may be disposed at the bottom of the housing body 12, the second cooling unit may include a second liquid cooling plate 142, a second channel for flowing a cooling liquid, such as cooling water, may be disposed in the second liquid cooling plate 142, the second channel extends in a direction from the first opening 122a to the second opening, and the second channel has a second liquid inlet and a second liquid outlet for respectively flowing the cooling liquid. Through setting up second liquid cooling board 142, can further improve the radiating efficiency, in time distribute away the heat that the electricity core produced. Preferably, a plurality of second channels may be disposed in the second liquid cooling plate 142 in parallel, and the plurality of second channels may be arranged in a direction consistent with the arrangement direction of the cells.

The second liquid cooling plate 142 may be formed as an integrated structure with the case body 12, so that the weight of the battery pack case 10 may be reduced and the overall stability of the battery pack case 10 may also be advantageously improved.

One end of the second channel near the second opening may be formed as a second liquid inlet, and one end of the second channel near the first opening 122a may be formed as a second liquid outlet; the battery pack case 10 may include a connection plate disposed at the second opening, and a flow guide channel communicating with the corresponding first channel and the second channel may be disposed in the connection plate, wherein the connection plate may be configured to seal the second opening of the accommodation chamber 120, and simultaneously, the connection plate may function to connect the first liquid-cooled plate 140 and the second liquid-cooled plate 142 to guide the cooling liquid in the first liquid-cooled plate 140 into the second liquid-cooled plate 142, so that the first liquid-cooled plate 140 and the second liquid-cooled plate 142 form a whole.

Referring to fig. 3 and 4, the battery pack case 10 may include a sealing plate 16 sealing the first opening 122a, the first inlet port and the second outlet port, and it is understood that the sealing plate 16 may serve as a side plate for sealing the side portion of the case body 12, and an inlet 160 for the cooling liquid to enter the first inlet port and an outlet 162 for the cooling liquid to exit the second outlet port may be formed in the sealing plate 16. In this way, the cooling liquid enters the first channel of the first liquid cooling plate 140 through the inlet 160, flows through the flow guide channel, enters the second channel of the second liquid cooling plate 142, and is finally discharged through the outlet 162, and the integrated inlet and outlet design improves the safety reliability and the assembly performance of the battery pack, and improves the production tact and the production efficiency.

As shown in fig. 1, 2 and 6, the battery pack case 10 may include a bottom case 18, a receiving cavity capable of receiving the case body 12 may be disposed in the bottom case 18, a mounting opening may be formed at a top end of the receiving cavity, and the battery pack case 10 may include a sealing rim 11 disposed at the mounting opening, and the sealing rim 11 seals the mounting opening, so that a gap between the first liquid-cooling plate 140 and the bottom case 18 may be sealed by the sealing rim 11. Because the sealing frame 11 and the first liquid cooling plate 140 can jointly form the upper shell of the battery pack case 10, the upper shell matched with the bottom shell 18 does not need to be additionally arranged, the weight of the battery pack is reduced, the energy density of the battery pack is favorably improved, and the production cost is reduced.

To further improve the sealing property, a seal strip 13a may be provided between the seal frame 11 and the mounting opening. Wherein, the sealing strip 13a can be fixed with the sealing frame 11 through the adhesive layer 13 b.

The bottom case 18 may include a surrounding frame 180 surrounding the peripheral wall of the housing body 12 and a supporting boss 182 connected to the surrounding frame 180 and protruding toward the inside of the surrounding frame 180, the supporting boss 182 may support the second liquid cooling plate 142, and the surrounding frame 180 and the supporting boss 182 may together surround to form the accommodating chamber. By providing the bottom case 18 in the frame-like structure, the weight of the battery pack can be further reduced.

The utility model also provides a battery package, the battery package includes the utility model provides a battery package shell 10 and set up the electric core in battery package shell 10. By arranging the battery pack shell 10 provided by the utility model in the battery pack, the weight of the battery pack can be reduced, and the energy density of the battery pack can be improved; meanwhile, the whole structure of the battery pack is simple, the assembling process of the battery pack can be simplified, and the assembling efficiency is improved.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. The technical idea of the utility model within the scope, can be right the utility model discloses a technical scheme carries out multiple simple variant, makes up with any suitable mode including each concrete technical feature. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims

1. The utility model provides a battery pack shell, its characterized in that, battery pack shell (10) includes shell body (12), be provided with in shell body (12) and hold holding chamber (120) that can hold electric core, holding chamber (120) are equipped with the confession the exposed opening (122) of the face that is provided with the utmost point post of electric core, shell body (12) form into an organic whole structure.

2. The battery pack case according to claim 1, wherein a plurality of accommodating chambers (120) capable of accommodating the corresponding battery cells are arranged in the case body (12), and the accommodating chambers (120) are arranged in parallel.

3. The battery pack housing of claim 1, wherein the cell comprises a cell body and a pair of poles respectively disposed on two opposite sides of the cell body;

the housing body (12) is cuboid, and two opposite side portions of the accommodating chamber (120) are provided with a pair of openings (122) respectively for exposing the surfaces of the battery cells, which are provided with the corresponding poles.

4. The battery pack case according to claim 3, wherein the pair of openings (122) are a first opening (122a) and a second opening, respectively;

the battery pack shell (10) comprises a first cooling unit arranged at the top of the shell body (12), the first cooling unit comprises a first liquid cooling plate (140), a first channel for cooling liquid to flow is arranged in the first liquid cooling plate (140), the first channel extends in the direction from the first opening to the second opening, the end part of the first channel close to the first opening (122a) is formed into a first liquid inlet, and the end part of the first channel close to the second opening is formed into a first liquid outlet.

5. The battery pack case according to claim 4, wherein the battery pack case (10) includes a second cooling unit provided at the bottom of the case body (12), the second cooling unit includes a second liquid-cooling plate (142), a second passage for flowing a cooling liquid is provided in the second liquid-cooling plate (142), the second passage extends in a direction from the first opening (122a) to the second opening, and the second passage has a second liquid inlet and a second liquid outlet for respectively flowing the cooling liquid.

6. The battery pack case according to claim 5, wherein an end of the second channel near the second opening is formed as the second inlet port, and an end of the second channel near the first opening (122a) is formed as the second outlet port;

the battery pack shell (10) comprises a connecting plate arranged at the second opening, and a flow guide channel communicated with the corresponding first channel and the second channel is arranged in the connecting plate;

the battery pack shell (10) comprises a sealing plate (16) for sealing the first opening (122a), the first liquid inlet and the second liquid outlet, wherein the sealing plate (16) is provided with an inlet (160) for allowing cooling liquid to enter the first liquid inlet and an outlet (162) for allowing the cooling liquid to be discharged from the second liquid outlet.

7. The battery pack case according to claim 5, wherein the first liquid-cooled plate (140) is formed as an integral structure with the case body (12); and/or

The second liquid cooling plate (142) is formed as an integral structure with the housing body (12).

8. The battery pack case according to any one of claims 5 to 7, wherein the battery pack case (10) comprises a bottom case (18), a receiving chamber capable of receiving the case body (12) is arranged in the bottom case (18), the top end of the receiving chamber is provided with a mounting opening, the battery pack case (10) comprises a sealing frame (11) arranged at the mounting opening, and the sealing frame (11) seals the mounting opening.

9. The battery pack case according to claim 8, wherein the bottom case (18) includes a surrounding frame (180) surrounding a circumferential wall of the case body (12) and a supporting boss (182) connected to the surrounding frame (180) and protruding toward the inside of the surrounding frame (180), the supporting boss (182) being capable of supporting the second liquid-cooled plate (142), the surrounding frame (180) and the supporting boss (182) together surrounding to form the receiving chamber.

10. A battery pack, characterized in that the battery pack comprises a battery pack housing (10) according to any one of claims 1-9 and a battery cell arranged in the battery pack housing (10).