CN213520209U

CN213520209U - Power battery assembly and car

Info

Publication number: CN213520209U
Application number: CN202022820264.5U
Authority: CN
Inventors: 郑雄; 任飞扬; 袁昌荣
Original assignee: Chongqing Changan New Energy Automobile Technology Co Ltd
Current assignee: Deep Blue Automotive Technology Co ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-06-22
Anticipated expiration: 2030-11-30

Abstract

In order to solve the problems of low utilization rate of the bag body of the storage battery and low integration efficiency, the power battery assembly and the automobile are provided, on the premise that the functions, the electrical performance and the safety performance of the product are not influenced, the storage battery has a space capable of being filled with more battery cores, the process procedures can be further reduced, the cost is reduced, and the integration level of the power battery is improved. This power battery assembly includes: the box body is internally provided with a first area and a second area which are connected or independently arranged; a first battery module mounted in the first region and a second battery module mounted in the second region; the first battery module and the second battery module are connected through a copper bar; the setting height of the second battery module in the longitudinal direction is lower than that of the first battery module in the longitudinal direction; the lug of each second battery cell in the second battery module is arranged towards the side part of the box body; the utmost point ear of each first electric core in the first battery module sets up towards the top of box.

Description

Power battery assembly and car

Technical Field

The utility model belongs to automobile parts, concretely relates to power battery assembly and car.

Background

The pure electric automobile is one of main automobile models in a new energy market, the requirement on the endurance mileage of the whole automobile is higher and higher along with the continuous development of the new energy automobile industry, and the goal of increasing the integration efficiency of the storage battery pack by arranging more electric quantity in the limited battery box space becomes a competitive pursuit of the industry. Most pure electric vehicles in the market are mainly of oil-electricity compatible vehicle types, the power battery pack is mainly arranged at the position of a vehicle chassis and limited by the boundary of the vehicle chassis, and the shape of the battery pack is generally irregular. Referring to fig. 1 and 2, in order to avoid the vehicle floor structure and ensure the ground clearance, the storage battery pack box body 2 is of an irregular rectangular stepped structure, the middle section Z-direction space is small, conventional standard modules cannot be arranged, and only a limited number of conventional modules can be arranged at the front section and the rear section of the box body 2. The whole package space and the volume utilization rate are low, so that the whole package integration efficiency is low.

Disclosure of Invention

In order to solve the problems of low utilization rate of the bag body of the storage battery and low integration efficiency, the power battery assembly and the automobile are provided, on the premise that the functions, the electrical performance and the safety performance of the product are not influenced, the storage battery has a space capable of being filled with more battery cores, the process procedures can be further reduced, the cost is reduced, and the integration level of the power battery is improved.

The technical scheme of the utility model is that:

the embodiment of the utility model provides a still provide a power battery assembly, include:

the box body is internally provided with a first area and a second area which are connected or independently arranged;

a first battery module mounted in the first region and a second battery module mounted in the second region; the first battery module and the second battery module are connected through a copper bar;

the arrangement height of the second battery module in the longitudinal direction is lower than that of the first battery module in the longitudinal direction; the lug of each second battery cell in the second battery module is arranged towards the side part of the box body; the pole ear of each first electric core in the first battery module faces the top of the box body.

Preferably, the first battery module includes:

the first module end plates are symmetrically arranged and fixed on a box body beam of the box body;

the two first insulating plates are symmetrically arranged and arranged between the two first module end plates;

the first battery cells are arranged between the two first insulating plates, and part of the first battery cells at the end parts are fixedly bonded with the corresponding first insulating plates; the plurality of first battery cells are connected in series and/or in parallel;

wherein, two first module end plate and arrange two between the first module end plate first insulation board with first electric core ties up fixedly through the ribbon jointly.

Preferably, the second battery module includes:

the two second module end plates are symmetrically arranged and fixed on a box body beam of the box body;

the two second insulating plates are symmetrically arranged and arranged between the two second module end plates;

the second battery cells are arranged between the two second insulating plates, and part of the second battery cells positioned at the end parts are fixedly bonded with the corresponding second insulating plates; the plurality of second battery cells are connected in series and/or in parallel;

and a pressing plate is covered above the second insulating plate and the second electric core and fixed on a box body beam of the box body.

Preferably, the bottom of the first battery module is bonded and fixed with the bottom plane in the first area of the box body through structural adhesive;

and the bottom of the second battery module is bonded and fixed with the bottom plane in the second area of the box body through structural adhesive.

The embodiment of the utility model provides a still provide an automobile, including foretell power battery assembly.

The utility model has the advantages that:

the utility model provides an electric core arranges through the mode of putting immediately or invering, bonds through gluing between the electric core back and module end plate and adopts the ribbon to tie up or the clamp plate is fixed, then on the box roof beam of module end plate fixed in box is fixed in to the rethread bolt. For further guaranteeing the firm reliability of structure, the module passes through the structure sticky and connects on the bottom plane of box, plays dual fixed action. This utility model discloses the arrangement mode is more nimble, can effectively retrench the integrated in-process intermediate process of module, reducible module subassembly simultaneously to effectively promote battery box volume utilization and can effectively reduce integrated cost.

The utility model has the advantages of reasonable design, simple process, leading cost, reliable performance, space saving and the like.

Drawings

FIG. 1 is a schematic diagram of a background art architecture;

FIG. 2 is a cross-sectional view of a background art structure;

FIG. 3 is a schematic structural diagram A of the present invention;

FIG. 4 is a schematic structural diagram B of the present invention;

figure 5 is a schematic view of the assembly of the present invention;

FIG. 6 is a cross-sectional view of the assembly of the present invention;

in the figure, 1-sealing cover, 2-box body; 21-a first region; 22-a second region; 3-a first battery module; 31-a first cell; 32-a first insulating plate; 33-first module end plate; 34-a binding tape; 4-double sided adhesive tape; 5-a second battery module; 51-a second cell; 52-a second insulating plate; 53-second module end plate; 54-a platen; 6-bolt; 7-structural adhesive.

Detailed Description

For the purpose of facilitating an understanding of the present invention, the following detailed description of the invention is provided in connection with specific embodiments and the accompanying drawings.

Referring to fig. 1 and 2, the internal space of the box body 2 of the battery pack in the prior art is of an irregular structure, and the sealing cover 1 of the box body 1 sinks due to avoiding from the vehicle body structure at the middle position of the box body 2 of the battery pack, so that the Z-direction space of the box body 2 at the middle position is smaller; simultaneously, 2 front ends of box and the rear end of battery package among the prior art all adopt conventional module arrangement mode (the electric core utmost point ear of each module sets up towards the top of box 1 promptly) to need reserve the safety space between module and the module, thereby lead to the inner space utilization of box 1 low.

The embodiment of the utility model provides an in, adopt new mould group to constitute group technique, simplify, nonstandard with the group mode of electricity core.

As shown in fig. 3, 5 and 6, in this embodiment, for a first area 21 with sufficient Z-direction space in the case 2, the first battery module 3 is disposed in the first area 21, the first cells 31 of the first battery module 3 are vertically disposed (i.e., the tabs of the first cells 31 of the first battery module 3 are disposed toward the top of the case), and the first cells 31 are bonded to each other by using the double-sided tape 4; the first battery cell 31 at the end part is bonded with the first insulating plate 32 through the double faced adhesive tape 4, the first insulating plate 32 and the first module end plate 33 are bound and fixed through the binding tape 34 after bonding, and the first module end plate 33 is fixed on the box body beam of the box body 3 through the bolt 6; the bottom of the first battery module 3 is adhered and fixed with the bottom plane in the first area 21 of the box body through the structural adhesive 7.

As shown in fig. 4, 5 and 6, for a second area 22 with insufficient Z-direction space in the box body 2, a second battery module 5 is arranged in the second area 22, a second cell 51 of the second battery module 5 is arranged in an inverted manner (i.e., a tab of the second cell 51 of the second battery module 5 is arranged toward a side portion of the box body 2), the second cells 51 are bonded with each other by using the double-sided tape 4, and after the second cell 51 at the end portion is bonded with a second insulating plate 52 by using the double-sided tape 4, a second module end plate 53 is fixed on a box body beam of the box body 2 by using a bolt 6; the bottom of the second battery module 5 is bonded with the bottom plane in the second area 22 of the box body 2 through the structural adhesive 7; the top of the second battery module 5 is pressed on the second electric core 51 and the second insulating plate 52 by the pressing plate 54 and then connected to the beam of the box body 2 by the bolt 6, so that the double fixing function is achieved, and the stability can be effectively ensured.

After the first battery module 3 is mounted in the first region 21 and the second battery module 5 is mounted in the second region 22, the longitudinal height of the first battery module 3 in the first region 21 is higher than the longitudinal height of the second battery module 5 in the second region 22.

The utility model discloses an above-mentioned arrangement can formulate the most suitable integrated mode according to actual envelope space is nimble, realizes box inner space utilization maximize when can guaranteeing stable in structure, reliability, see figure 5, figure 6.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A power cell assembly, comprising:

the box body (2), wherein a first area (21) and a second area (22) which are connected or independently arranged are formed in the box body (2);

a first battery module (3) mounted in the first region (21) and a second battery module (5) mounted in the second region (22); the first battery module (3) and the second battery module (5) are connected through a copper bar;

wherein the setting height of the second battery module (5) in the longitudinal direction is lower than the setting height of the first battery module (3) in the longitudinal direction; the lug of each second battery cell (51) in the second battery module (5) is arranged towards the side part of the box body (2); the pole ear of each first battery cell (31) in the first battery module (3) faces the top of the box body (2).

2. The power battery assembly according to claim 1, wherein the first battery module (3) comprises:

the two first module end plates (33) are symmetrically arranged, and the first module end plates (33) are fixed on a box body beam of the box body (2);

two first insulating plates (32) which are symmetrically arranged, wherein the two first insulating plates (32) are arranged between the two first module end plates (33);

a plurality of first battery cores (31) which are fixedly bonded with each other, wherein the plurality of first battery cores (31) are arranged between the two first insulating plates (32), and the part of the first battery cores (31) at the end part is fixedly bonded with the corresponding first insulating plates (32); a plurality of first battery cells (31) are connected in series and/or in parallel;

wherein the two first module end plates (33) and the first insulating plate (32) and the first battery cell (31) arranged between the two first module end plates (33) are jointly bound and fixed by a binding tape (34).

3. The power battery assembly according to claim 1, wherein the second battery module (5) comprises:

the two second module end plates (53) are symmetrically arranged, and the second module end plates (53) are fixed on a box body beam of the box body (2);

two second insulating plates (52) which are symmetrically arranged, wherein the two second insulating plates (52) are arranged between the two second module end plates (53);

a plurality of second battery cores (51) which are fixedly bonded with each other, wherein the plurality of second battery cores (51) are arranged between two second insulating plates (52), and the part of the second battery core (51) at the end part is fixedly bonded with the corresponding second insulating plate (52); a plurality of second battery cells (51) are connected in series and/or in parallel;

a pressing plate (54) covers the second insulating plate (52) and the second battery cell (51), and the pressing plate (54) is fixed on a box beam of the box body (2).

4. The power cell assembly of claim 1,

the bottom of the first battery module (3) is fixedly bonded with the bottom plane in the first area (21) of the box body (2) through structural adhesive (7);

and the bottom of the second battery module (5) is bonded and fixed with the bottom plane in the second area (22) of the box body (2) through structural adhesive (7).

5. An automobile, characterized by comprising the power battery assembly of any one of claims 1 to 4.