Battery pack structure

Abstract

The utility model discloses a battery pack structure, which is characterized in that an anti-explosion valve and a foot support are arranged at the bottom of a box body, buffer pads are adhered between adjacent battery cells to form small modules, the small modules are placed in the box body, the small modules are fixed by battery cell pressing strips, the positions of the side surfaces of the small modules are limited by baffle plates, and the small modules are extruded and fixed by a supporting plate; the stacked small modules are also placed on the upper portion of the supporting plate, and the small modules are fixed through the pressing plate to form a large module; an output busbar base is placed on a pressing plate, a busbar assembly is welded through laser, the output end of a busbar is in lap joint with the output busbar base, and the box body is further provided with a high-power connector, a communication terminal, a protection plate, a circuit breaker assembly, a display panel, a communication antenna and a starting key. According to the utility model, the internal module adopts a compartment design, so that the condition that the service life of a bottom-layer battery cell is shortened due to great stress difference of the battery cells caused by gravity influence is avoided; the device can adapt to different mounting grounds; and personal injury caused by gas ejected out of control in the battery can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery pack technical field especially relates to a battery pack structure. BACKGROUND

[0002] At present, in order to realize the capacity of battery module increase, multiple module series-parallel connection mode is used, and the foam is pasted between the battery cell and the battery cell to play a buffering role. The end plate at both ends of the battery cell group is pressed against the battery cell group through the connecting piece. The series-parallel connection between the battery cells is connected through the positive / negative pole lug laser welding.

[0003] The existing Pack internal battery cell is usually stacked in the horizontal direction, and the overall Pack width, thickness direction size is large, and the height size is low. Multiple Packs are usually stacked together for use, and the material quantity is large, the cost is high, and the installation is complex. UTILITY MODEL CONTENTS

[0004] The utility model discloses a battery pack structure to solve the above technical problem.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A battery pack structure, comprising a busbar assembly, a battery cell pressing strip, a box, a high-power connector, a communication terminal, a protection plate, a circuit breaker assembly, a battery cell, a support plate, a baffle, and a pressing plate, the bottom of the box is provided with an explosion-proof valve and a foot prop, the adjacent battery cells are pasted with buffer pads to form small modules, which are placed in the box and fixed by the battery cell pressing strip, the inner side of the box is provided with a baffle, and the position of the side of the small module is limited by the baffle, the middle position of the box is provided with a support plate, the small module is fixed by extruding the support plate, and the small module is also placed on the upper part of the support plate, the upper part of the box is provided with a pressing plate, and the small module is fixed to form a large module by the pressing plate; the output busbar base is placed on the pressing plate, the busbar assembly is welded by laser, and the output end of the busbar is overlapped on the output busbar base, the box is also provided with a high-power connector, a communication terminal, a protection plate, a circuit breaker assembly, a display plate, a communication antenna and a start button, and the box is connected with the cover plate.

[0007] Preferably, the small modules are stacked into two groups and placed side by side in the box.

[0008] Preferably, the cover plate is provided with a hanging groove for wall fixing.

[0009] Preferably, the explosion-proof valve is downward.

[0010] Preferably, the height of the foot prop can be adjusted slightly.

[0011] Compared with the prior art, the utility model has the advantages that: the internal module of the utility model adopts the design of the sub -warehouse, avoids the force difference of the electric core because of the gravity influence and leads to the service life of the bottom electric core shortening, the product adopts the installation of the floor type, the foot support has the height adjusting function, can adapt to different installation ground, the explosion -proof valve direction is downward, can avoid the personal injury because of the gas that the battery inside loses control sprays, the electric core of single small module application in the utility model is 4 280Ah specifications electric core, can select other quantity's 314Ah, 100Ah etc electric core in the subsequent product, the utility model can be used in other industries, for example, the module structure in the portable energy storage etc. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the overall assembly structure schematic diagram of the utility model.

[0013] Figure 2 It is the internal assembly structure schematic diagram of the utility model.

[0014] Figure 3 It is the overall structure schematic diagram of the utility model.

[0015] In the drawing: cover plate 1, explosion -proof valve 2, foot support 3, busbar assembly 4, electric core pressing strip 5, box 6, high -power connector 7, communication terminal 8, protection plate 9, circuit breaker assembly 10, buffer pad 11, electric core 12, support plate 13, baffle 14, pressing plate 15, display plate 16, communication antenna 17, start button 18, output busbar base 19, hanging groove 1-1. DETAILED DESCRIPTION

[0016] The utility model will be further described in detail below in combination with the drawings and specific embodiment.

[0017] A battery pack structure, comprising busbar assembly 4, cell pressure strip 5, box 6, high-power connector 7, communication terminal 8, protection plate 9, circuit breaker assembly 10, cell 12, support plate 13, baffle 14, pressing plate 15, the bottom of the box 6 is provided with explosion-proof valve 2 and foot support 3, the adjacent cells 12 are pasted with buffer pad 11, and the small modules are placed in the box 6 and fixed by the cell pressure strip 5, the inner side of the box 6 is provided with baffle 14, and the position of the side of the small module is limited by baffle 14, the middle position of the box 6 is provided with support plate 13, the small module is fixed by extruding the support plate 13, the small module is also placed on the upper part of the support plate 13, the upper part of the box 6 is provided with pressing plate 15, and the small module is fixed to form a large module by pressing plate 15; the output busbar base 19 is placed on the pressing plate 15, the busbar assembly 4 is welded by laser, the output end of the busbar is overlapped on the output busbar base 19, and the box 6 is also provided with high-power connector 7, communication terminal 8, protection plate 9, circuit breaker assembly 10, display plate 16, communication antenna 17 and starting button 18; the box 6 is connected with cover plate 1.

[0018] The small modules are placed in the box 6 in two groups. The cover plate 1 is provided with hanging groove 1-1 for fixing against the wall. The explosion-proof valve 2 is directed downward, the gas sprayed from the out-of-control cell is directed to the ground, and the injury caused by the sprayed gas is avoided. The height of the foot support 3 can be adjusted, and the requirement for the flatness of the ground is reduced. The support plate 13 is used for supporting the upper cell module and providing pre-tightening force for the cell, so that the life of the bottom cell is not shortened due to the great force difference caused by gravity.

[0019] The assembling process of the utility model comprises the following steps: installing explosion-proof valve 2 and foot support 3 on the box 6; pasting buffer pad 11 between cells 12 to form small modules and placing the small modules into the box 6; placing the small modules side by side; limiting the side position of the small module by baffle 14; extruding and fixing the small module by support plate 13; placing the small modules on the upper part of the support plate 13 and limiting the side position of the small module by baffle 14; fixing the module to the box by cell pressure strip 5; completely fixing the small module to form a large module by pressing plate 15; placing output busbar base 19 on the pressing plate 15; welding busbar assembly 4 by laser, and overlapping the output end of the busbar on the output busbar base 19; installing electrical components such as high-power connector 7, communication terminal 8, protection plate 9, circuit breaker assembly 10, display plate 16, communication antenna 17 and starting button 18 on the box; connecting the signal wire harness and the power harness in the box; covering the cover plate 1 to complete the assembly.

[0020] The electric core applied by the single small module is 4 electric cores with a specification of 280Ah, and other numbers of 314Ah, 100Ah and the like electric cores can be selected in subsequent products; the utility model can be used in other industries, such as module structures of industrial and commercial storage and portable energy storage.

[0021] The above is the preferred embodiment of the utility model, and for the ordinary skilled in the art, according to the teaching of the utility model, the change, modification, replacement and modification of the implementation mode without departing from the principle and spirit of the utility model still fall within the protection scope of the utility model.

Claims

1. A battery pack structure, characterized in that, The system includes a busbar assembly, battery cell clamping strips, a housing, a high-power connector, communication terminals, a protection board, a circuit breaker assembly, battery cells, a support plate, a baffle plate, and a pressure plate. The bottom of the housing is equipped with an explosion-proof valve and foot supports. Adjacent battery cells are stacked into small modules with buffer pads and placed inside the housing, secured by the battery cell clamping strips. A baffle plate on the inner side of the housing restricts the lateral position of the small modules. A support plate in the middle of the housing presses and secures the small modules. Stacked small modules are also placed on top of the support plate. A pressure plate at the top of the housing secures the small modules into a larger module. An output busbar base is placed on the pressure plate, and the busbar assembly is laser-welded. The output end of the busbar is connected to the output busbar base. The housing also houses a high-power connector, communication terminals, a protection board, a circuit breaker assembly, a display board, a communication antenna, and a start button. The housing is connected to a cover plate.

2. The battery pack structure as described in claim 1, characterized in that, There are two sets of stacked modules, placed side by side inside the box.

3. The battery pack structure as described in claim 1, characterized in that, The cover plate is provided with a hanging groove for fixing against the wall.

4. The battery pack structure as described in claim 1, characterized in that, The explosion-proof valve faces downwards.

5. A battery pack structure as described in claim 1, characterized in that, The height of the footrest can be finely adjusted.

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