CN213520149U

CN213520149U - Battery package structure and electric automobile

Info

Publication number: CN213520149U
Application number: CN202022811504.5U
Authority: CN
Inventors: 孙立新; 陈许超; 唐丽娟; 董汝帅; 张兴东
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-06-22
Anticipated expiration: 2030-11-27

Abstract

The utility model relates to a battery package structure and electric automobile, wherein, battery package structure includes casing and electric core unit, and at least one side of casing is formed with the opening that the power supply core unit packed into, and is equipped with on the casing with shutoff open-ended curb plate. The electric core unit comprises a first electric core assembly and a second electric core assembly, the arrangement direction of the first electric core assembly and the second electric core assembly is orthogonal to the arrangement direction of the electric core unit, the first electric core assembly is provided with a plurality of vertically arranged electric cores, and the second electric core assembly is provided with a plurality of transversely arranged electric cores. The battery pack structure of the utility model can improve the utilization rate of the internal space of the shell by vertically arranging the electric cores of the first electric core component and transversely arranging the electric cores of the second electric core component, thereby improving the volume grouping efficiency and the energy density of the battery pack structure; in addition, an opening is formed in one side of the shell, so that the battery cell unit can conveniently enter the shell, and the battery pack structure can be conveniently assembled.

Description

Battery package structure and electric automobile

Technical Field

The utility model relates to an electric automobile technical field, in particular to battery package structure, simultaneously, the utility model discloses still relate to an electric automobile with this battery package structure.

Background

With the increasing problem of energy shortage, electric vehicles are becoming popular, wherein the power battery becomes an important environmental driving force with the advantages of high voltage, high capacity and high power output. However, due to the unreasonable structural design, the battery core of the existing power battery can only enter the shell from the top of the battery core, so that a lot of inconvenience exists, and meanwhile, the existing power battery also has the defects of low volume grouping efficiency and low energy density.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to a battery pack structure, which has a high volume grouping efficiency and a high energy density.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a battery pack structure comprising a case and a cell unit, wherein:

an opening for the battery cell unit to be arranged in is formed on at least one side of the shell, and a side plate for plugging the opening is arranged on the shell;

the cell unit comprises a first cell assembly and a second cell assembly, the arrangement direction of the first cell assembly and the arrangement direction of the second cell assembly are orthogonal to the arrangement direction of the cell unit, the first cell assembly is provided with a plurality of vertically arranged cells, and the second cell assembly is provided with a plurality of transversely arranged cells.

Furthermore, be equipped with in the casing and be located first electric core subassembly with reinforcing plate between the second electric core subassembly, just the double-phase offside of reinforcing plate respectively with first electric core subassembly with the bonding of second electric core subassembly links to each other.

Further, the battery cell unit and the shell are connected through structural adhesive poured between the battery cell unit and the shell.

Furthermore, the wire harness of the battery pack structure is arranged at the top of the battery cell unit and is connected with the battery cell unit through the structural adhesive.

Furthermore, an insulating film is arranged on the inner wall of the shell, and the battery cell unit is connected with the insulating film in an adhering mode.

Further, the casing includes an upper casing and a lower casing connected to the upper casing, the opening is formed in the lower casing, and the battery cell unit is located in the lower casing.

Furthermore, a low-voltage interface is arranged on the upper shell, a high-voltage interface is arranged on the lower shell, and the high-voltage interface comprises a high-voltage positive interface and a high-voltage negative interface which are arranged at intervals.

Further, be equipped with in the casing down cover in the electricity core unit top, just enclose between apron and the casing down and establish and be formed with and put the thing chamber, high-pressure interface is located and encloses and establish the formation put on the lateral wall of the lower casing in thing chamber.

Furthermore, the lower shell is provided with an installation part for installing the battery pack structure on the vehicle body.

Compared with the prior art, the utility model discloses following advantage has:

battery package structure, through making the vertical arrangement of electric core of first electric core subassembly to make the electric core of second electric core subassembly transversely arrange, can improve the utilization ratio to the internal space of casing, thereby can improve battery package structure's efficiency and energy density in groups, simultaneously, through forming the opening in at least one side of casing, also can be convenient for electric core unit gets into in the casing, and the equipment of the battery package structure of being convenient for.

In addition, the reinforcing plate is favorable for improving the structural strength of the shell, and meanwhile, the reinforcing plate is bonded with the first electric core assembly and the second electric core assembly, so that the stability of the electric core unit can be improved. And electric core unit and casing bond to link to each other via pouring into the structure glue between the two, can improve electric core unit's stability that sets up, also can improve the intensity of battery package structure simultaneously. Through locating the top of electric core unit with the pencil, can save battery package both sides space, avoid the pencil to be extruded, can improve the security, also be convenient for whole arranging and assembling of package simultaneously.

In addition, an insulating film is arranged on the inner wall of the shell and is bonded with the battery cell unit through the insulating film, so that the safety performance of the battery pack structure can be improved. The adoption is located the low pressure interface on the casing, and locates the high-low pressure separation's on the casing down mode with the high pressure interface, can save space and improve volume efficiency in groups. And form through enclosing between lid and lower casing and put the thing chamber, can be convenient for place battery package spare parts such as block terminal.

Another object of the present invention is to provide an electric vehicle, the electric vehicle has the battery pack structure as described above.

Electric automobile through adopt as above battery package structure, can save the occupation space to electric automobile, be convenient for wholly arrange.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic structural diagram of a battery pack structure according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a battery pack structure according to an embodiment of the present invention at another viewing angle;

fig. 3 is an exploded view of a battery pack structure according to an embodiment of the present invention;

fig. 4 is a schematic structural view of the battery pack structure of the embodiment of the present invention without the side plate;

fig. 5 is a schematic structural diagram of a lower housing according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of an upper housing according to an embodiment of the present invention;

description of reference numerals:

1. a lower housing; 101. a high voltage positive electrode interface; 102. a side plate; 103. a mounting frame; 104. a high voltage negative electrode interface; 105. a cover plate; 106. a storage cavity;

2. an upper housing; 201. a low-voltage interface;

3. a first electric core assembly; 4. a second electric core assembly; 5. a distribution box; 6. a battery management system.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The embodiment relates to a battery pack structure, which comprises a shell and a battery cell unit in the whole structure, wherein an opening for the battery cell unit to be installed is formed on at least one side of the shell, and a side plate for sealing the opening is arranged on the shell. The battery cell unit comprises a first battery cell assembly and a second battery cell assembly, and the arrangement direction of the first battery cell assembly and the second battery cell assembly is orthogonal to the installation direction of the battery cell unit. The first cell assembly has a plurality of cells of vertical arrangement, and the second cell assembly has a plurality of cells of horizontal arrangement.

The battery package structure of this embodiment through making the vertical superpose of electric core of first electric core subassembly to make the horizontal superpose of electric core of second electric core subassembly, can improve the utilization ratio to the internal space of casing, thereby can improve battery package structure's volume and become efficiency and energy density in groups. And through forming the opening in at least one side of casing, also can be convenient for the electric core unit to get into in the casing to and be convenient for the equipment of battery package structure. The vertical direction in this embodiment means the vertical direction or an angle with the vertical direction, and the horizontal direction means the horizontal direction.

Based on the above overall structure, an exemplary structure of the battery pack structure of the present embodiment is as shown in fig. 1 to 4, and the case of the present embodiment has an overall rectangular structure, and is formed with an opening specifically on the left side as shown in fig. 4. Of course, instead of providing an opening on the left side of the housing, an opening may also be provided on the right side or other side thereof. The casing of this embodiment specifically includes casing 2 and the lower casing 1 that links to each other with casing 2, and aforementioned opening specifically forms on casing 1 down, and electric core unit is located casing 1 down. Based on the state shown in fig. 4, the first electric core assembly 3 is disposed on the left side of the lower casing 1, and the second electric core assembly 4 is disposed on the right side of the lower casing 1.

It should be noted that, in addition to vertically arranging the cells of the first cell assembly 3, the cells of the second cell assembly 4 are transversely arranged, and the stacking direction of the cells in each cell assembly can also be changed based on the specific structure of the housing. For example, transversely arrange the electric core of first electric core subassembly 3, and vertically arrange the electric core of second electric core subassembly 4, the design principle uses the splendid attire as much as possible electric core as the standard in casing 1 down to improve battery package structure's volume efficiency and energy density in groups.

As shown in fig. 5, the opening is formed inside the lower case 1, and a reinforcing plate for dividing the inner space of the lower case 1 into left and right parts is provided in order to improve the structural strength. First electric core subassembly 3 and second electric core subassembly 4 are located the both sides of reinforcing plate respectively, and the reinforcing plate is located between first electric core subassembly 3 and second electric core subassembly 4 promptly. And the two opposite sides of reinforcing plate bond with first electric core subassembly 3 and second electric core subassembly 4 respectively and link to each other, and make first electric core subassembly 3 and second electric core subassembly 4 become the form of relying on each other to can improve the rigidity and the mode of battery package structure.

In addition, in order to facilitate the arrangement of the internal components of the battery pack structure, a cover plate 105 covering the top of the battery cell unit is disposed in the lower housing 1, and a storage cavity 106 is formed between the cover plate 105 and the lower housing 1 to accommodate components such as a distribution box. In this embodiment, by providing the cover plate 105 on the lower case 1, not only the bearing member can be easily carried, but also the battery cell unit and the cover plate 105 can be bonded and connected to each other, thereby improving the stability of the battery cell unit.

And because of the arrangement of the cover plate 105, the inner periphery of the lower casing 1 forms a cavity with one side opened, at this time, in order to facilitate the bonding between each electric core assembly and the lower casing 1, in the specific implementation, each electric core assembly and the lower casing 1 can be bonded and connected through the structural adhesive poured between the electric core assembly and the lower casing 1. In addition, in this embodiment, the top of the electric core unit is specifically arranged to the pencil that the battery package structure used, so set up, can save casing 1 both sides space, avoids the pencil to be extruded, can improve the security, also is convenient for whole package's arrangement and assembly simultaneously. And the pencil links to each other with electric core unit by the structure glue because of encapsulating in lower casing 1, can improve the setting fastness of pencil.

For improving the security performance of this battery package structure, all be equipped with the insulating film on casing 1 and apron 105 down, first electric core subassembly 3 and second electric core subassembly 4 specifically link to each other with the insulating film bonding. In addition, in order to save space, as shown in fig. 5 and fig. 6 in combination with fig. 1, the high-voltage interface and the low-voltage interface of the present embodiment are separately designed, wherein the low-voltage interface 201 is specifically disposed on the upper housing 2, the high-voltage interface is disposed on the lower housing 1 and is specifically located on the sidewall of the object placing cavity 106, and the high-voltage interface includes the high-voltage positive interface 101 and the high-voltage negative interface 104 which are disposed at an interval.

In addition, in order to facilitate the installation of the battery pack installation structure on the vehicle body, an installation part for installing the battery pack structure on the vehicle body is arranged on the lower shell 1. As shown in fig. 1 and 2, the installation portion of this embodiment specifically includes the mounting bracket 103 that sets firmly respectively at the double-phase contralateral side of lower casing 1, and this mounting bracket 103 includes two perpendicular continuous mounting panels to and connect the triangular strengthening rib of two mounting panels, and this structure can make mounting bracket 103 have better structural strength.

When the battery pack structure of the embodiment is specifically installed, the electric cores of the first electric core assembly 3 and the second electric core assembly 4 are respectively vertically and horizontally arranged outside through gluing or other methods; then, the core unit and the wire harness enter the lower shell 1 through the openings respectively, structural adhesive is poured into the lower shell 1 so as to fix the core unit and the wire harness in the lower shell 1, and then the side plates 102 are connected with the lower shell 1 in a welding manner; finally, other components such as the distribution box 5 and the battery management system 6 are installed in the storage cavity 106, and then the upper housing 2 and the lower housing 1 are fastened.

The battery pack structure of the embodiment can improve the utilization rate of the internal space of the shell by adopting the structure, thereby improving the volume grouping efficiency and energy density of the battery pack structure, and being applied to indoor logistics vehicles, motorcycles, 48V systems and the like; meanwhile, due to the design of high-low voltage separation and arrangement of the wire harness at the top of the battery cell unit, the space can be saved, the space utilization rate is improved, and the grouping efficiency of the battery pack structure can be further improved.

Besides, the embodiment also relates to an electric automobile which is provided with the battery pack structure.

The electric automobile of this embodiment through adopt as above battery package structure, can save the occupation space to electric automobile, be convenient for overall arrangement.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery pack structure, comprising: including casing and electric core unit, wherein:

an opening for the battery cell unit to be arranged in is formed on at least one side of the shell, and a side plate (102) for sealing the opening is arranged on the shell;

the cell unit comprises a first cell assembly (3) and a second cell assembly (4), the arrangement direction of the first cell assembly (3) and the second cell assembly (4) is orthogonal to the installation direction of the cell unit, the first cell assembly (3) is provided with a plurality of vertically arranged cells, and the second cell assembly (4) is provided with a plurality of transversely arranged cells.

2. The battery pack structure of claim 1, wherein: be equipped with in the casing and be located first electric core subassembly (3) with reinforcing plate between second electric core subassembly (4), just the double-phase offside of reinforcing plate respectively with first electric core subassembly (3) with second electric core subassembly (4) bonding links to each other.

3. The battery pack structure of claim 1, wherein: the battery cell unit is connected with the shell through structural adhesive which is poured between the battery cell unit and the shell.

4. The battery pack structure of claim 1, wherein: the wire harness of the battery pack structure is arranged at the top of the battery cell unit and is connected with the battery cell unit through structural adhesive.

5. The battery pack structure of claim 1, wherein: and an insulating film is arranged on the inner wall of the shell, and the battery cell unit is connected with the insulating film in an adhesive manner.

6. The battery pack structure according to any one of claims 1 to 5, wherein: the shell comprises an upper shell (2) and a lower shell (1) connected with the upper shell (2), the opening is formed in the lower shell (1), and the battery cell unit is located in the lower shell (1).

7. The battery pack structure of claim 6, wherein: the improved shell is characterized in that a low-voltage interface (201) is arranged on the upper shell (2), a high-voltage interface is arranged on the lower shell (1), and the high-voltage interface comprises a high-voltage positive interface (101) and a high-voltage negative interface (104) which are arranged at intervals.

8. The battery pack structure of claim 7, wherein: be equipped with in casing (1) down cover in apron (105) at electric core unit top, just apron (105) with enclose between casing (1) down and establish and be formed with and put thing chamber (106), high-pressure port is located and encloses and establish on the lateral wall of forming the lower casing (1) of putting thing chamber (106).

9. The battery pack structure of claim 6, wherein: and the lower shell (1) is provided with an installation part for installing the battery pack structure on the vehicle body.

10. An electric vehicle, characterized in that: the electric vehicle has the battery pack structure according to any one of claims 1 to 9.