Mechanism for tightly and fixedly connecting battery cell modules in battery pack box body

Abstract

The utility model relates to the technical field of battery packs, in particular to a mechanism for tightly and fixedly connecting battery cell modules in a battery pack box body, which comprises a front baffle plate and a rear end plate which are symmetrically arranged, an upper support plate and a lower support plate are arranged between the front baffle plate and the rear end plate, and the bottom side of the front baffle plate and the rear end plate is connected with the lower support plate. A lower battery cell module mounting cavity is formed between the upper supporting plate and the lower supporting plate; a top plate is arranged at the top, and an upper battery cell module mounting cavity is formed between the upper supporting plate and the top plate; an upper battery cell module is mounted in the upper battery cell module mounting cavity, a lower battery cell module is mounted in the lower battery cell module mounting cavity, and compaction assemblies are arranged between the two ends of the upper battery cell module and the inner wall of the front baffle and between the two ends of the lower battery cell module and the inner wall of the rear end plate respectively. The mechanism is simple in structure, can realize longitudinal tight fixed connection of two battery cell modules, can adapt to deformation of the battery cell modules in work, and can effectively prolong the service life of a battery pack.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery pack technical field especially relates to a kind of battery pack box inner electric core module close fixed connection mechanism. BACKGROUND

[0002] At present, new energy vehicles are widely concerned by the society due to their excellent environmental performance, and the requirements for new energy vehicles are also increasing. As a kind of new energy vehicle, electric vehicles are also developing towards high safety, high energy ratio and lightweight. The main factor determining the driving range of electric vehicles is the power supply battery. Different specifications of power supply batteries can be selected for different vehicle models to meet the driving requirements.

[0003] The power supply battery for electric vehicles is generally a battery pack composed of multiple electric core modules, that is, multiple electric core modules are stacked in the same box, and then the electric core modules are connected. The core electric core module is generally configured with a corresponding number of electric cores according to the size of the required output voltage, and then all the electric cores are connected for voltage output. In order to meet the power supply of the battery, the electric core module is generally used as a module, at least two electric core modules are stacked and electrically connected, thereby meeting the power requirement, and the stacking method includes horizontal stacking or vertical longitudinal stacking.

[0004] In the conventional technology, the longitudinal stacking of double-layer electric core modules generally adopts direct stacking, and then bonding or tightening by double-sided adhesive tape or steel band. This method is not only complicated to operate, but also has poor fixing effect and is easily loosened by external vibration. In addition, the vertically stacked battery modules generate a large amount of heat during operation, which causes slight deformation between the electric cores of the electric core module. Long-term effect on the fixing components such as steel band on both sides of the electric core module will inevitably cause irreversible deformation of the external fixing components, which cannot better fix the electric core module, and directly leads to displacement of the electric core module in the box and other hidden dangers.

[0005] Therefore, a new technical solution is needed to solve the above technical problems. UTILITY MODEL CONTENTS

[0006] The utility model aims to overcome the problems of the prior art, and provides a battery pack box inner electric core module close fixed connection mechanism, which solves the technical problems that the conventional technology uses double-sided adhesive tape or steel band for bonding or tightening, which is not only complicated to operate, but also has poor fixing effect and is easily loosened by external vibration; and long-term effect on the fixing components such as steel band on both sides of the electric core module will inevitably cause irreversible deformation of the external fixing components, which cannot better fix the electric core module, and directly leads to displacement of the electric core module in the box and other hidden dangers.

[0007] The above object is achieved by the following technical solutions

[0008] A battery pack box inner cell module compact fastening mechanism, comprising symmetrically arranged front baffle and rear end plate, and upper support plate and lower support plate are arranged between the front baffle and the rear end plate, the lower support plate is connected with the bottom side of the front baffle and the rear end plate, and the lower cell module installation cavity is formed between the upper support plate and the lower support plate; the top of the front baffle and the rear end plate is provided with a top plate, and the upper cell module installation cavity is formed between the upper support plate and the top plate; the upper cell module is installed in the upper cell module installation cavity, the lower cell module is installed in the lower cell module installation cavity, and the two ends of the upper cell module and the lower cell module are respectively provided with compaction assemblies between the inner walls of the front baffle and the rear end plate.

[0009] Further, the compaction assembly comprises sequentially connected PC plate, vacuum plate and foam plate, the PC plate is attached to the inner walls of the front baffle and the rear end plate, and the foam plate is attached to the end of the upper cell module and the lower cell module.

[0010] Further, the PC plate comprises a right-angle bottom plate, forming an L-shaped support groove.

[0011] Further, the PC plate, the vacuum plate and the foam plate are matched in shape.

[0012] Further, the bottom surface of the upper support plate is further provided with a pair of pressing supports, and the pressing supports can act on the top of the lower cell module.

[0013] Further, heat preservation cotton is arranged between the pressing support and the top of the lower cell module.

[0014] Further, the top plate comprises a top plate body, and a top plate support plate is vertically arranged on both sides of the top plate body, and a right-angle connecting edge is outwardly folded on the bottom side of the top plate support plate.

[0015] Further, the right-angle connecting edge, the top of the front baffle and the rear end plate are provided with top plate connecting holes, and the rotation is realized by top plate screws. Beneficial effects

[0016] The utility model provides a kind of battery pack box inner electric core module tight fixed connection mechanism, by setting independent upper electric core module installation cavity and lower electric core module installation cavity to meet the installation demand of vertically arranged upper electric core module and lower electric core module, can ensure that both are independent of each other and do not affect each other. The flexible compaction between electric core module and the end plate of both ends is realized by compaction component, even if the expansion deformation of electric core module occurs in work also cannot cause irreversible deformation to front baffle and rear end plate, greatly ensure the service life of battery pack. The mechanism not only simple structure, can realize the longitudinal tight fixed connection of 2 electric core modules, and can adapt to the deformation of electric core module in work, can effectively improve the service life of battery pack. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the structure schematic view of the utility model discloses a kind of battery pack box inner electric core module tight fixed connection mechanism;

[0018] Figure 2 It is the sectional view of the utility model discloses a kind of battery pack box inner electric core module tight fixed connection mechanism;

[0019] Figure 3 It is the schematic view after the utility model discloses a kind of battery pack box inner electric core module tight fixed connection mechanism removes electric core module;

[0020] Figure 4 It is the structure schematic view of compaction component in the utility model discloses a kind of battery pack box inner electric core module tight fixed connection mechanism.

[0021] Figure mark:

[0022] 1-front baffle;

[0023] 2-rear end plate;

[0024] 3-upper support plate, 301-pressing support;

[0025] 4-lower support plate;

[0026] 5-top plate, 501-top plate body, 502-top plate support plate, 503-right angle connecting edge;

[0027] 6-compaction component, 601-PC board, 602-vacuum plate, 603-cotton board, 604-right angle base plate;

[0028] 7-lower electric core module installation cavity;

[0029] 8-upper electric core module installation cavity;

[0030] 9-upper electric core module;

[0031] 10-lower electric core module;

[0032] 11 - thermal insulation cotton;

[0033] 12 - top plate screw. DETAILED DESCRIPTION

[0034] The utility model will be further explained in detail below according to the drawings and examples. The described example is only a part of the utility model example, not all examples. Based on the example in the utility model, all other examples obtained by the ordinary skill in the art without creative labor belong to the scope of the utility model protection.

[0035] As Figures 1-3 The utility model provides a kind of battery pack box inner cell module close fixed connection mechanism, including symmetrically arranged front baffle 1 and rear end plate 2, and be provided with upper support plate 3 and lower support plate 4 between the front baffle 1 with the rear end plate 2, the lower support plate 4 is connected with the bottom side of the front baffle 1 and the rear end plate 2, and the lower support plate 4 between the upper support plate 3 constitutes lower cell module installation cavity 7;

[0036] The top of the front baffle 1 with the rear end plate 2 is provided with top plate 5, and the upper support plate 3 with the top plate 5 constitutes upper cell module installation cavity 8 between the upper support plate 3 with the top plate 5;

[0037] The upper cell module installation cavity 8 is installed with upper cell module 9, and the lower cell module installation cavity 7 is installed with lower cell module 10, and the two ends of the upper cell module 9 with the lower cell module 10 are respectively provided with compaction component 6 between the inner wall of the front baffle 1 and the rear end plate 2, and the compaction component 6 is used to realize the close fixed connection of the upper cell module 9 and the lower cell module 10 in the upper cell module installation cavity 8 and the lower cell module installation cavity 7, so that the upper cell module 9 can be closely installed in the upper cell module installation cavity 8, and the lower cell module 10 can be closely installed in the lower cell module installation cavity 7.

[0038] Under the constraint of the above structure, the two ends of the lower cell module 10 are respectively connected with the front baffle 1 and the rear end plate 2 by the compaction component 6, the top of the lower cell module 10 is pressed tightly by the upper support plate 3, and the bottom of the lower cell module 10 is pressed tightly by the lower support plate 4, so that the close fixed connection of the lower cell module 10 is finally realized.

[0039] And the two ends of the upper cell module 9 are respectively connected with the front baffle 1 and the rear end plate 2 by the compaction component 6, the top of the upper cell module 9 is pressed tightly by the top plate 5, and the bottom of the upper cell module 9 is pressed tightly by the upper support plate 3, so that the close fixed connection of the upper cell module 9 is finally realized.

[0040] AsFigure 4 As shown, the compacting assembly 6 in the embodiment includes a PC plate 601, a vacuum plate 602 and a foam plate 603 connected in sequence, the PC plate 601 is attached to the inner wall of the front baffle 1 and the rear end plate 2, and the foam plate 603 is attached to the end of the upper battery cell module 9 and the lower battery cell module 10.

[0041] Specifically, the PC plate 601 in the embodiment has the characteristics of impact resistance, high temperature resistance and sound insulation;

[0042] The foam plate 603 has the characteristics of elasticity, light weight, fast pressure-sensitive fixing, convenient use, bending freely, ultra-thin volume, reliable performance, etc., which can effectively ensure the flexible compression between the battery cell module and the front baffle and the rear end plate, and will not cause damage to the battery cells in the battery cell module.

[0043] The vacuum plate 602 has excellent heat insulation performance, high-strength structure and good corrosion resistance, and is light in weight, good in toughness, and can withstand certain pressure and load. In the embodiment, the vacuum plate 602 can further realize the flexible change of space.

[0044] The PC plate 601 includes a right-angle bottom plate 604, which constitutes an L-shaped support groove, which can support the bottom of the vacuum plate 602 and the foam plate 603 under the action of the support groove, thereby ensuring that the vacuum plate 602 and the foam plate 603 better act on the end face of the battery cell module.

[0045] The PC plate 601, the vacuum plate 602 and the foam plate 603 are matched in shape, thereby ensuring that the three-layer structure simultaneously acts on the end of the battery cell module.

[0046] As shown in Figure 2 and Figure 3 As an optimization of the embodiment, a pair of compacting supports 301 are further arranged on the bottom surface of the upper support plate 3, which can act on the top of the lower battery cell module 10 to further compact the lower battery cell module 10.

[0047] The heat preservation cotton 11 is further arranged between the compacting support 301 and the top of the lower battery cell module 10, which has good heat insulation effect and can ensure that the work between the upper battery cell module 9 and the lower battery cell module 10 is not affected, and block the heat transfer in the working process.

[0048] As shown in Figure 2 and Figure 3 The top plate 5 in the embodiment includes a top plate body 501 and a top plate support plate 502 vertically arranged on both sides of the top plate body 501, and a right-angle connecting edge 503 folded outward is arranged on the bottom side of the top plate support plate 502.

[0049] In addition, a top plate connecting hole is arranged at the top of the right-angle connecting edge 503, the front baffle 1 and the rear end plate 2, and the screwing is realized through a top plate screw 12. The top plate 5 with the top plate support plate 502 can provide the height extension in the longitudinal direction for the upper battery cell module 9 in the upper layer, and then the top plate 5 with different height top plate support plates 502 can adapt to the upper battery cell module 9 with different heights.

[0050] The above description is only for the implementation of the present application and is not used for limiting the present application. Any modification, equivalent replacement, improvement and the like made by the skilled in the art within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A battery pack box inner cell module close fastening mechanism, characterized in that, It includes symmetrically arranged front baffle (1) and rear end plate (2), and is provided with upper support plate (3) and lower support plate (4) between the front baffle (1) and the rear end plate (2), the lower support plate (4) is connected with the bottom side of the front baffle (1) and the rear end plate (2), and the upper support plate (3) and the lower support plate (4) constitute a lower battery cell module installation cavity (7); The top of the front baffle (1) and the rear end plate (2) is provided with a top plate (5), and the upper support plate (3) and the top plate (5) constitute an upper battery cell module installation cavity (8); The upper battery cell module installation cavity (8) is provided with an upper battery cell module (9), and the lower battery cell module installation cavity (7) is provided with a lower battery cell module (10), and the two ends of the upper battery cell module (9) and the lower battery cell module (10) are respectively provided with a compaction assembly (6) between the inner wall of the front baffle (1) and the rear end plate (2).

2. The battery pack case inner cell module tight fixing mechanism according to claim 1, characterized in that, The compaction assembly (6) comprises PC board (601), vacuum plate (602) and foam plate (603) connected in sequence, the PC board (601) is attached to the inner wall of the front baffle (1) and the rear end plate (2), and the foam plate (603) is attached to the end of the upper battery cell module (9) and the lower battery cell module (10).

3. The battery pack case inner cell module tight fixing mechanism according to claim 2, characterized in that, The PC board (601) comprises a right-angle bottom plate (604), which constitutes an L-shaped support groove.

4. The battery pack case inner cell module tight fixing mechanism according to claim 2 or 3, characterized in that, The PC board (601), the vacuum plate (602) and the foam plate (603) are matched in shape.

5. The battery pack case inner cell module tight fixing mechanism according to claim 1, characterized in that, The bottom surface of the upper support plate (3) is further provided with a pair of pressing supports (301), and the pressing supports (301) can act on the top of the lower battery cell module (10).

6. The battery pack case inner cell module tight fixing mechanism according to claim 5, characterized in that, A heat preservation cotton (11) is further arranged between the pressing support (301) and the top of the lower battery cell module (10).

7. The battery pack case inner cell module compact fastening mechanism according to claim 1, characterized by, The top plate (5) comprises a top plate body (501), and a top plate support plate (502) vertically arranged on both sides of the top plate body (501), and a right-angle connecting edge (503) folded outward is arranged on the bottom side of the top plate support plate (502).

8. The battery pack case inner cell module tight fixing mechanism according to claim 7, characterized in that, The right-angle connecting edge (503), the front baffle (1) and the top of the rear end plate (2) are provided with top plate connecting holes, and are realized by top plate screws (12).

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