Anti-impact structure of lithium battery pack

Abstract

The utility model discloses an anti-impact structure of a lithium battery pack, and relates to the technical field of lithium batteries. A lithium battery pack impact-resistant structure comprises a bottom plate, a battery box is fixedly connected to the bottom plate, fixing plates are fixedly connected to the four sides in the battery box, elastic plates are fixedly connected to the fixing plates, first springs are connected between the elastic plates and the adjacent fixing plates, and a set of lithium batteries are fixedly connected between the elastic plates. The bottom plate can slide on the sliding rods under the telescopic action of the third springs, then the whole device is buffered and damped, when the battery box is impacted, the elastic plate can buffer the impact force while ensuring the clamping effect under the action of deformation of the elastic plate and the telescopic action of the first springs, the impact force is prevented from directly acting on the lithium battery, and the service life of the lithium battery is prolonged. And the upper and lower limiting plates can sleeve the upper and lower ends of the lithium battery after sliding oppositely, so that the lithium battery is reinforced and locked, and the situation that the lithium battery shifts due to collision and the power supply connection effect is affected is avoided.

Description

TECHNICAL FIELD

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

[0002] With the wide use of lithium batteries in electric vehicles, portable electronic devices and other various application fields, it is particularly important to ensure the safety and reliability of lithium battery Pack (battery pack). Especially when facing external impact or vibration, lithium battery Pack must have good anti -impact performance to prevent internal battery unit from displacement, resulting in poor contact, short circuit and even thermal runaway and other safety problems.

[0003] The existing lithium battery Pack anti -impact structure mainly relies on spring, air bag and other elastic elements to realize the buffering and shock absorption function. Although these traditional methods can absorb and disperse external impact energy to a certain extent and reduce the direct damage to the battery, they have obvious limitations: when subjected to a larger impact force, the spring and air bag may not provide enough support force, resulting in relative displacement between battery units, which further affects the stability of battery connection and overall electrical performance. In addition, this simple buffering design cannot meet the demand of modern high -performance lithium battery Pack for higher level safety protection.

[0004] In view of the above-mentioned deficiencies existing in the prior art, we propose a lithium battery Pack anti -impact structure, which can not only reduce the shock, but also quickly reinforce and lock the lithium battery when subjected to impact, effectively avoid unnecessary movement between battery units and ensure the reliability of battery connection. INVENTION CONTENTS

[0005] In order to overcome the shortcomings of the existing anti -impact structure which mainly relies on spring, air bag and other elastic elements to realize the buffering and shock absorption function, but cannot avoid the displacement and poor contact of lithium battery caused by impact, the utility model provides a lithium battery Pack anti -impact structure, which can not only reduce the shock, but also quickly reinforce and lock the lithium battery when subjected to impact, effectively avoid unnecessary movement between battery units and ensure the reliability of battery connection.

[0006] The technical scheme is: a lithium battery Pack anti -impact structure, comprising a bottom plate, the bottom plate is fixedly connected with a battery box, the battery box is fixedly connected with a fixed plate on four sides, the fixed plate is fixedly connected with an elastic plate, the elastic plate is connected with the adjacent fixed plate through a first spring, a group of lithium batteries are fixedly connected between the elastic plates, the bottom plate and the battery box are provided with a reinforcing assembly for reinforcing the lithium battery, and the bottom plate is provided with a shock absorption assembly for shock absorption.

[0007] Further, the elastic plate is an arc structure protruding inward, which is used for closely contacting the lithium battery.

[0008] Further, the reinforcing assembly comprises guide blocks fixedly connected to four sides of the battery box, a moving plate slidingly connected between two guide blocks, two vertically symmetrical extrusion plates fixedly connected to the inner side of the moving plate, the extrusion plates extending into the battery box, mounting plates fixedly connected to the bottom plate and the top end of the battery box, lithium batteries located between the upper and lower mounting plates, a limiting plate slidingly connected to the mounting plate, and a second spring connected between the limiting plate and the adjacent mounting plate.

[0009] Further, the limiting plate is provided with protruding parts bent and extending towards the lithium batteries on four sides, for sleeving and limiting the lithium batteries.

[0010] Further, the side of the limiting plate and the extrusion plate close to each other is inclined, and the extrusion plate is in extrusion fit with the limiting plate.

[0011] Further, the damping assembly comprises sliding rods slidingly connected to the four corner positions of the bottom plate, a sliding plate fixedly connected between the bottom ends of the sliding rods, a third spring connected between the sliding plate and the bottom plate, and the third spring sleeving the adjacent sliding rod.

[0012] The bottom plate can slide on the sliding rods under the action of the third spring, thereby buffering and damping the whole device, when the battery box is impacted, the elastic plate can buffer the impact force while ensuring the clamping effect under the action of the elastic plate deformation and the first spring extension, the impact force is avoided from directly acting on the lithium batteries, and the upper and lower limiting plates can be sleeved on the upper and lower ends of the lithium batteries after sliding towards each other, thereby reinforcing and locking the lithium batteries, and avoiding displacement of the lithium batteries due to collision, thereby affecting the connection and power supply effect. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a three-dimensional structure schematic view of the utility model.

[0014] Figure 2 It is a three-dimensional structure schematic view of the bottom plate, the battery box, the fixed plate and other components of the utility model.

[0015] Figure 3 It is a three-dimensional structure schematic view of the fixed plate, the elastic plate and the first spring of the utility model.

[0016] Figure 4 It is a three-dimensional structure schematic view of the guide block, the moving plate and the extrusion plate and other components of the utility model.

[0017] Figure 5 It is a three-dimensional structure schematic view of the bottom plate, the limiting plate, the mounting plate and the second spring of the utility model.

[0018] Figure 6The utility model discloses a sliding plate, sliding rod, third spring and the stereoscopic structure schematic diagram of bottom plate.

[0019] In the figure, the names and serial numbers of parts are as follows: 1_bottom plate, 2_battery box, 3_fixing plate, 4_elastic plate, 5_first spring, 6_lithium battery, 7_guide block, 8_moving plate, 9_squeezing plate, 10_limiting plate, 11_mounting plate, 12_second spring, 13_sliding plate, 14_sliding rod, 15_third spring. DETAILED DESCRIPTION

[0020] The utility model will be further explained in connection with specific embodiment, still need to explain, unless another explicit provision and limitation, the term such as: set up, install, connect, connect should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through intermediate medium, can be the intercommunication of two elements. For ordinary skilled person in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to specific circumstances.

[0021] Example 1: a lithium battery Pack anti-impact structure, as shown in Figures 1-6 Including bottom plate 1, battery box 2, fixing plate 3, elastic plate 4, first spring 5, lithium battery 6, reinforcing assembly and shock-absorbing assembly, the upper side of bottom plate 1 is fixedly connected with battery box 2, the inside of battery box 2 is fixedly connected with two fixing plates 3 around, the inside of fixing plate 3 is fixedly connected with elastic plate 4, two first springs 5 are connected between elastic plate 4 and adjacent fixing plate 3, a group of lithium batteries 6 are fixedly connected between eight elastic plates 4, elastic plate 4 is the arc structure that protrudes inward, for close to lithium battery 6, bottom plate 1 and battery box 2 are equipped with reinforcing assembly for reinforcing lithium battery 6, bottom plate 1 is equipped with shock-absorbing assembly for shock absorption.

[0022] When using the device, the whole device can be damped through the shock-absorbing assembly, and the lithium battery 6 is located inside the battery box 2, when the battery box 2 is impacted, under the action of elastic plate 4 deformation and first spring 5 expansion and contraction, elastic plate 4 can buffer the impact force while ensuring the clamping effect, avoid the impact force directly acting on lithium battery 6, and when the battery box 2 is impacted, the reinforcing assembly can quickly reinforce and lock lithium battery 6, effectively avoid unnecessary movement between battery units, ensure the reliability of battery connection.

[0023] Example 2: on the basis of example 1, as shown in Figure 1 、 Figure 4 And Figure 5As shown, the reinforcing assembly comprises guide blocks 7, a moving plate 8, extrusion plates 9, limit plates 10, mounting plates 11 and second springs 12, two guide blocks 7 are fixedly connected to the front and rear and left and right sides of the battery box 2, the moving plate 8 is slidably connected between the two guide blocks 7, the moving plate 8 has two symmetrical extrusion plates 9 fixedly connected to the inner side thereof, the extrusion plates 9 extend into the battery box 2, the mounting plates 11 are fixedly connected to the upper side of the bottom plate 1 and the inner upper side of the battery box 2, the lithium batteries 6 are located between the two mounting plates 11, the limit plate 10 is slidably connected to the mounting plate 11, the limit plate 10 is provided with protruding portions bent and extending towards the lithium batteries 6 on the front, rear, left and right sides thereof, for sleeving and limiting the lithium batteries 6, the side, where the limit plate 10 and the extrusion plate 9 are close to each other, is obliquely arranged, the extrusion plate 9 is extruded with the limit plate 10, and the second spring 12 is connected between the limit plate 10 and the adjacent mounting plate 11.

[0024] In use, the impact force from any side of the battery box 2 pushes the moving plate 8 to slide inward, the moving plate 8 sliding inward drives the extrusion plates 9 to move inward, the extrusion plates 9 moving inward extrude the two limit plates 10 to slide towards each other, the second spring 12 deforms, and the limit plates 10 slide towards each other to be sleeved on the upper and lower ends of the lithium batteries 6, so as to reinforce and lock the lithium batteries 6, avoiding displacement of the lithium batteries 6 due to collision and affecting the connection and power supply effect, when the impact force is buffered, the two limit plates 10 slide back to reset under the resetting action of the second spring 12, and the limit plate 10 drives the extrusion plate 9 and the moving plate 8 to move outward to reset.

[0025] As shown in Figure 1 and Figure 6 , the damping assembly comprises a sliding plate 13, sliding rods 14 and third springs 15, the sliding rods 14 are slidably connected to the four corner positions of the bottom plate 1, the sliding plate 13 is fixedly connected between the lower sides of the four sliding rods 14, the third springs 15 are connected between the sliding plate 13 and the bottom plate 1, and the third springs 15 are sleeved on the adjacent sliding rods 14.

[0026] In use, the device is installed at a specified position by the sliding plate 13, and the bottom plate 1 can slide up and down on the sliding rods 14 under the extension and retraction of the third springs 15, so as to buffer and dampen the whole device.

[0027] Although the present disclosure has been shown and described with respect to certain exemplary embodiments thereof, it should be understood by the skilled in the art that various changes in form and details can be made without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents. Therefore, the scope of the present disclosure should not be limited to the above-described embodiments, but should be determined by the appended claims and their equivalents.

Claims

1. A lithium battery Pack impact resistant structure, characterized by, The utility model relates to a lithium battery fixing device, including bottom plate (1), bottom plate (1) is fixedly connected with battery box (2), four sides in battery box (2) are fixedly connected with fixed plate (3), fixed plate (3) are fixedly connected with elastic plate (4) all, first spring (5) are connected between elastic plate (4) and adjacent fixed plate (3), a group of lithium battery (6) are fixedly connected between elastic plate (4), bottom plate (1) and battery box (2) are equipped with the reinforcing assembly for reinforcing lithium battery (6), bottom plate (1) is equipped with the damping assembly for damping.

2. The impact resistant structure for a lithium battery pack according to claim 1, wherein Elastic plate (4) is the arc structure that protrudes inwards, is used for close to lithium battery (6).

3. The impact resistant structure for a lithium battery pack according to claim 2, wherein Reinforcing assembly includes guide block (7), guide block (7) is fixedly connected in battery box (2) four sides, two guide blocks (7) are slidably connected with moving plate (8) between, the inboard fixedly connected with two extrusion plates (9) of vertical symmetry of moving plate (8), extrusion plate (9) extends into battery box (2), bottom plate (1) and battery box (2) top are fixedly connected with mounting plate (11), lithium battery (6) are located between the upper and lower mounting plate (11), the mounting plate (11) is slidably connected with the limiting plate (10), and the limiting plate (10) is connected with the second spring (12) between adjacent mounting plate (11).

4. The impact resistant structure for a lithium battery pack according to claim 3, wherein Limiting plate (10) four sides are equipped with the protruding part of bending extension in the direction of lithium battery (6), is used for the location of the outside of lithium battery (6) is sleeved.

5. The impact resistant structure for a lithium battery pack according to claim 4, wherein The side of limiting plate (10) and extrusion plate (9) is close to each other is arranged obliquely, and extrusion plate (9) is extruded with limiting plate (10).

6. The impact resistant structure for a lithium battery pack according to claim 5, wherein Damping assembly includes sliding rod (14), and sliding rod (14) is slidably connected in the position of bottom plate (1) four corners, and the bottom end between sliding rod (14) is fixedly connected with sliding plate (13), and the third spring (15) is connected between sliding plate (13) and bottom plate (1), and the third spring (15) is sleeved on adjacent sliding rod (14).

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