Battery stacking, extruding and pre-tightening device

Abstract

The utility model relates to the technical field of battery stacking equipment, in particular to a battery stacking, extruding and pre-tightening device which comprises a plurality of battery units arranged in a battery stacking groove, a pre-tightening device is arranged on the inner side of the battery stacking groove, the pre-tightening device comprises a supporting rod, one end of the supporting rod is fixedly connected with an extruding plate, and a spring is arranged on the supporting rod; wherein a hole is formed in the side wall of the battery stacking groove, the supporting rod is in sliding connection with the hole, one end of the supporting rod is flush with the outer side wall of the battery stacking groove, hole grooves are formed in the periphery of the hole, and when a battery unit of the battery stacking extrusion pre-tightening device is excessively extruded, the extrusion plate quickly responds and is pressed into the hole grooves; the real-time feedback is beneficial to finding and processing potential extrusion problems in time, and battery damage or safety accidents are prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery stacking equipment technical field especially is a kind of battery stacking extrusion pre-tightening device. BACKGROUND

[0002] Battery stacking extrusion device is a kind of important equipment in battery manufacturing and production process, it is mainly used to stack and extrude battery module or battery cell to ensure the compactness and stability of battery assembly, battery stacking extrusion device usually includes transfer table, support base plate, extrusion mechanism, limiting mechanism, guide sliding block, driving piece and control system etc.

[0003] In the battery stacking extrusion process, if extrusion force is too large, battery structure can be damaged, leading to battery internal short circuit, leakage or thermal runaway etc. Safety problem, and this overpressure risk is difficult to be discovered and avoided in time, in view of this, we propose a kind of battery stacking extrusion pre-tightening device. UTILITY MODEL CONTENTS

[0004] The main purpose of the utility model is to provide a kind of battery stacking extrusion pre-tightening device to solve the problems in the related art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a kind of battery stacking extrusion pre-tightening device is provided, including battery stacking groove, the inside of the battery stacking groove is equipped with several battery units, the inside of the battery stacking groove is equipped with pre-tightening device, the pre-tightening device includes support rod, one end of the support rod is fixedly connected with extrusion plate, the support rod is equipped with spring;

[0006] Among them, the side wall of the battery stacking groove is opened with hole, the support rod is slidably installed in the hole, one end of the support rod is flush with the outside wall of the battery stacking groove, the edge of the hole near one end is opened with hole slot, the extrusion plate is slidably installed in the hole slot, when the extrusion plate is in initial state, one side of the extrusion plate extends 0.1-0.5mm outside the hole slot.

[0007] Further, the battery stacking groove includes battery stacking groove a and battery stacking groove b, both side walls of the battery stacking groove a are fixedly installed with slide rod, the side wall of the slide rod is provided with sliding groove, both side walls of the battery stacking groove b are fixedly provided with sliding block.

[0008] Further, the sliding block is T-shaped structure, and the sliding block is slidably installed in the sliding groove, the slide rod is opened with screw hole near both end side walls of the battery stacking groove a, the screw hole is threadedly connected with bolt, and the slide rod and the sliding block are fixed by bolt.

[0009] Further, the battery stack groove b outer side wall is provided with a sliding hole communicated with the hole, the support rod is slidingly installed in the sliding hole, and the diameter of the support rod is the same as the inner diameter of the sliding hole.

[0010] Further, the hole is concentrically arranged with the hole groove, and the hole groove has the same size as the extrusion plate.

[0011] Further, one end of the spring is fixedly connected to the inner wall of the hole, and the other end of the spring is fixedly connected to the side wall of the extrusion plate, when the extrusion force from the battery unit is greater than the maximum pressure borne by the spring, the spring is compressed under stress, and the support rod moves in the direction of the sliding hole under stress.

[0012] Compared with the prior art, the battery stack extrusion pre-tightening device has the following beneficial effects: in the normal state, the extrusion plate is located outside the hole and maintains a certain distance from the hole groove around the hole, the spring is in a natural state, and a certain pre-tightening force is provided for the extrusion plate, but it is not enough to make the extrusion plate enter the hole groove, the extrusion state between the battery units can be monitored in real time, once the battery units are excessively extruded, the extrusion plate will quickly respond and be pressed into the hole groove, and this instant feedback helps to discover and handle potential extrusion problems in time, preventing battery damage or safety accidents. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Fig. 2 It is a schematic diagram of the pre-tightening device structure of the utility model.

[0015] Illustration: 1, battery stack groove; 11, battery stack groove a; 12, battery stack groove b; 2, battery unit; 3, pre-tightening device; 31, extrusion plate; 32, support rod; 33, hole; 34, hole groove; 4, sliding rod; 5, sliding block. DETAILED DESCRIPTION

[0016] In order to further illustrate the technical means and effects adopted by the utility model to achieve the predetermined utility model purposes, the specific embodiments, structures, features and effects according to the utility model will be described in detail as follows in combination with the drawings and preferred embodiments.

[0017] Please refer to Figs. 1-2 As shown in the figure, the embodiment aims to provide a battery stack extrusion pre-tightening device, which comprises a battery stack groove 1, a plurality of battery units 2 are arranged in the battery stack groove 1, a pre-tightening device 3 is arranged on the inner side of the battery stack groove 1, the pre-tightening device 3 comprises a support rod 32, one end of the support rod 32 is fixedly connected with an extrusion plate 31, and a spring is arranged on the support rod 32.

[0018] The battery stack groove 1 side wall is provided with a hole 33, the support rod 32 is slidingly installed in the hole 33, one end of the support rod 32 is flush with the outer side wall of the battery stack groove 1, a hole groove 34 is opened near the edge of the hole 33, and the extrusion plate 31 is slidingly installed in the hole groove 34; when the extrusion plate 31 is in the initial state, one side of the extrusion plate 31 extends 0.1-0.5mm outside the hole groove 34;

[0019] The material of the extrusion plate 31 is silica gel, which is used to relieve the extrusion force generated by the battery stack;

[0020] The battery stack groove 1 includes a battery stack groove a11 and a battery stack groove b12, both side walls of the battery stack groove a11 are fixedly installed with sliding rods 4, the sliding rods 4 are provided with sliding grooves in the side walls, both side walls of the battery stack groove b12 are fixedly provided with sliding blocks 5, and the sliding rods 4 and the sliding blocks 5 are slidingly connected through the sliding grooves; this connection mode is stable and reliable, which ensures that the battery stack groove b12 can smoothly slide on the battery stack groove a11 and is not easy to shake or fall off;

[0021] The sliding block 5 is T-shaped, and the T-shaped sliding block can provide better stability when moving on the sliding rod due to its special shape design;

[0022] The sliding block 5 is slidingly installed in the sliding groove, the sliding rod 4 is provided with a threaded hole near both end side walls of the battery stack groove a11, a bolt is threadedly connected in the threaded hole, and the sliding rod 4 and the sliding block 5 are fixed through the bolt; through the sliding connection of the sliding rod 4 and the sliding block 5 and the fastening effect of the bolt, the stable connection between the battery stack groove a11 and the battery stack groove b12 is ensured;

[0023] The outer side wall of the battery stack groove b12 is provided with a sliding hole communicating with the hole 33, and the support rod 32 is slidingly installed in the sliding hole; the diameter of the support rod 32 is the same as the inner diameter of the sliding hole, and the sliding connection between the support rod 32 and the sliding hole allows the support rod to smoothly move when being extruded, which increases the flexibility of the structure;

[0024] The hole 33 and the hole groove 34 are concentrically arranged, and the hole groove 34 has the same size as the extrusion plate 31; the concentric arrangement of the hole 33 and the hole groove 34 ensures that the support rod 32 can be accurately positioned during installation, avoiding installation difficulties or performance degradation caused by position deviation;

[0025] One end of the spring is fixedly connected to the inner wall of the hole 33, and the other end of the spring is fixedly connected to the side wall of the extrusion plate 31. When the extrusion force from the battery unit 2 is greater than the maximum pressure borne by the spring, the spring is compressed under force, and the supporting rod 32 is moved in the direction of the sliding hole under force. When the battery unit 2 in the battery stacking groove 1 is extruded, the extrusion force is transmitted to the extrusion plate 31. Since the two ends of the spring are fixed to the hole 33 and the extrusion plate 31 respectively, the spring will deform according to the change of the extrusion force. The deformation can reflect the mechanical state in the battery stacking process in real time. Once the extrusion force exceeds the safety threshold of the spring, the supporting rod 32 slides and is exposed outside the sliding hole. When the supporting rod 32 slides the sliding hole, it indicates that the extrusion force of the battery stacking is too large.

[0026] In the specific use, the battery stacking groove 1 internally arranges a plurality of battery units 2, the pre-tightening device 3 includes an extrusion plate 31 and a supporting rod 32, one end of the supporting rod 32 is fixedly connected to the extrusion plate 31, the other end passes through a hole 33 in the inner side wall of the battery stacking groove 1, the hole 33 is embedded with a hole groove 34 consistent with the shape of the extrusion plate 31 to allow the extrusion plate 31 to partially enter the hole groove 34 when subjected to pressure, a spring is sleeved on the supporting rod 32, one end is fixedly connected to the hole 33, and the other end is fixedly connected to the extrusion plate 31, so that a certain pre-tightening force is maintained, and the extrusion plate 31 is kept outside the hole 33 without external force. The battery stacking groove 1 is composed of the battery stacking groove a11 and the battery stacking groove b12 through the sliding connection of the sliding rod 4 and the sliding block 5, and the two are fixed at the required position through bolts to adjust the space size in the battery stacking groove 1. The normal working state is that the battery units 2 maintain appropriate spacing in the stacking groove and are not subjected to excessive extrusion. The extrusion plate 31 is kept outside the hole 33 without contact with the hole groove 34 due to the pre-tightening force of the spring. When the battery units 2 are excessively extruded, the pressure in the battery stacking groove 1 increases, the extrusion plate 31 is subjected to pressure from the battery units 2 and starts to be pushed to the hole groove 34 in the hole 33. With the deepening of the extrusion plate 31, the spring is further compressed and stores the energy generated due to extrusion. When the extrusion plate 31 completely or partially enters the hole groove 34, the exposed part of the supporting rod 32 increases, indicating that the spacing between the battery units 2 is too small and there is a risk of extrusion. The operator can adjust the relative position between the battery stacking groove a11 and the battery stacking groove b12 by loosening the bolts, moving the sliding block 5 in the sliding rod 4, and then re-tightening the bolts to increase or decrease the space in the battery stacking groove 1, thereby adjusting the spacing between the battery units 2.

[0027] In order to further illustrate the technical means and effects adopted by the utility model to achieve the predetermined utility model purposes, the specific embodiments, structures, features and effects according to the utility model will be described in detail below with reference to the drawings and preferred embodiments.

[0028] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed with preferred embodiments, it is not intended to limit the present application. Any person skilled in the art can make minor changes or modifications to the disclosed technical content, or make equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any modification, equivalent change or modification of the above embodiments, which does not depart from the technical solution of the present application, is still within the scope of the technical solution of the present application.

Claims

1. A battery stacking compression pre-tightening device, comprising a battery stacking groove (1), wherein a plurality of battery units (2) are disposed inside the battery stacking groove (1), and a pre-tightening device (3) is disposed on the inner side of the battery stacking groove (1), characterized in that, The pre-tightening device (3) includes a support rod (32), one end of which is fixedly connected to a pressing plate (31), and a spring is provided on the support rod (32); The battery stacking slot (1) has a hole (33) on its side wall. The support rod (32) is slidably installed in the hole (33). One end of the support rod (32) is flush with the outer side wall of the battery stacking slot (1). A slot (34) is opened near the edge of one end of the hole (33). The extrusion plate (31) is slidably installed in the slot (34). When the extrusion plate (31) is in the initial state, one side of the extrusion plate (31) extends 0.1-0.5mm beyond the slot (34).

2. The battery stacking compression pre-tightening device according to claim 1, characterized in that, The battery stacking slot (1) includes battery stacking slot a (11) and battery stacking slot b (12). Slide rods (4) are fixedly installed on both sides of the battery stacking slot a (11). Slide grooves are opened on the side walls of the slide rods (4). Slider blocks (5) are fixedly installed on both sides of the battery stacking slot b (12).

3. The battery stacking compression pre-tightening device according to claim 2, characterized in that, The slider (5) has a T-shaped structure and is slidably installed in the groove. The slide rod (4) has threaded holes on both sides of the battery stacking groove a (11), and bolts are threaded into the threaded holes. The slide rod (4) and the slider (5) are fixed by bolts.

4. The battery stacking compression pre-tightening device according to claim 2, characterized in that, The outer wall of the battery stacking slot b (12) is provided with a sliding hole that communicates with the hole (33). The support rod (32) is slidably installed in the sliding hole, and the diameter of the support rod (32) is the same as the inner diameter of the sliding hole.

5. The battery stacking compression pre-tightening device according to claim 1, characterized in that, The hole (33) and the groove (34) are concentrically arranged, and the groove (34) and the extrusion plate (31) have the same size.

6. The battery stacking compression pre-tightening device according to claim 4, characterized in that, One end of the spring is fixedly connected to the inner wall of the hole (33), and the other end of the spring is fixedly connected to the side wall of the extrusion plate (31). When the extrusion force from the battery unit (2) is greater than the maximum pressure that the spring can withstand, the spring is compressed and the support rod (32) is moved towards the sliding hole.

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