CN220367395U - Battery expansion detection device - Google Patents

Abstract

The utility model provides a battery expansion detection device, which comprises a battery box, a storage battery pack, an expansion displacement plate, two sliding terminals in sliding contact with the positive electrode and the negative electrode of the storage battery pack, two wiring terminals and a conductive member connected between the sliding terminals and the wiring terminals.

Description

Battery expansion detection device

Technical Field

The utility model relates to the technical field of battery expansion detection, in particular to a battery expansion detection device.

Background

In the charging process of the storage battery, particularly in the end stage of charging, water is separated into hydrogen and oxygen due to overcharge, short circuit, serious vulcanization and rapid temperature rise of electrolyte during charging can lead to massive evaporation of water, at the moment, if the vent hole of the liquid charging hole cover is blocked, the pressure in the storage battery is very high due to too much gas to overflow, the storage battery groove is deformed firstly, and when the internal pressure reaches a certain pressure, the joint or other weak parts of the storage battery groove cover can burst.

According to the search, the existing battery expansion detection device generally needs to detach the battery, the related technology is as in the Chinese patent application number 2022216 032 24, the battery is placed between the top plate and the sliding plate, the sliding plate is pushed to move when the battery expands, and the expansion condition of the battery is judged by detecting the moving distance of the sliding plate, so that the mode can only detect the performance of the battery and cannot monitor the battery in real time in the use process; the utility model patent of China with the application number of 202121092267.X relates to a battery cell expansion detection device of a battery module, and whether the end part of one elastic strip and the end part of the other adjacent elastic strip are not aligned is observed through a transparent strip, so that the use condition of a battery cell body can be known in time conveniently, however, the mode can not be early-warned in time; the utility model patent in China with the application number of 201620890697.9 discloses a battery expansion detector, and when the battery expands, circuits on two sides of the battery expansion detector are connected, so that a bulb can be lightened and early-warning can be performed in time.

However, in any of the above prior arts, no corresponding measures can be taken when the battery is expanded, so that when the battery is expanded, if the battery is not found in time, a large potential safety hazard may be caused.

Disclosure of Invention

The utility model provides a battery expansion detection device which can early warn and take measures in time when a battery expands.

In order to achieve the above purpose, the utility model provides a battery expansion detection device, which comprises a battery box, a storage battery pack arranged in the battery box, an expansion displacement plate connected to the inner wall of the battery box in a sliding way, two sliding terminals fixed on the expansion displacement plate and in sliding contact with the positive electrode and the negative electrode of the storage battery pack, two wiring terminals fixed on the battery box and a conductive member connected between the sliding terminals and the wiring terminals, wherein an elastic member is fixed on the inner wall of the battery box, and one surface of the expansion displacement plate far away from the storage battery pack is in contact with the elastic member.

The battery box is internally provided with an early warning device, the early warning device comprises two connecting terminals fixed on one surface of the expansion displacement plate, which is away from the storage battery, two positive and negative terminals fixed on two sides of the inner wall of the battery box, and a battery and a bulb which are connected between the positive and negative terminals through wires, wherein the two connecting terminals are connected through wires, and when the two connecting terminals are contacted with the positive and negative terminals, the two connecting terminals, the positive and negative terminals, the battery and the bulb form a complete closed loop.

The bottom of battery box is fixed and is equipped with the limiting plate that two blocks set up of standing, storage battery stands the setting in the bottom of battery box, and storage battery is located between the limiting plate, storage battery deviates from the one side of inflation displacement board and the inner wall fixed connection of battery box.

The conductive member is a conductive wire, one end of the conductive wire is connected with the wiring terminal, and the other end of the conductive member is connected with the sliding terminal.

The elastic component is the rubber piece, the inner wall of battery box is equipped with the spout, inflation displacement board and spout sliding connection, the rubber piece is fixed in the spout, inflation displacement board back is inconsistent with the rubber piece from storage battery's one side.

The battery box is hinged with a box cover.

The sliding groove is of an inclined structure, and when the expansion displacement plate slides in the direction away from the storage battery pack, the expansion displacement plate integrally moves towards the upper end of the battery box under the guide of the sliding groove, so that the sliding terminal is separated from the anode and the cathode of the storage battery pack.

The sliding terminal is of an L-shaped structure.

The utility model has the beneficial effects that: when the storage battery pack expands, the expansion displacement plate is pushed to move, so that the two connecting terminals are contacted with the positive electrode terminal and the negative electrode terminal, the two connecting terminals, the positive electrode terminal, the negative electrode terminal, the battery and the bulb form a complete closed loop, the bulb is lightened, and gives out early warning to the outside, meanwhile, when the sliding terminal slides away from the positive electrode and the negative electrode of the storage battery pack, the expansion displacement plate integrally moves to the upper end of the battery box under the guiding action of the sliding groove, the sliding terminal is separated from the positive electrode and the negative electrode of the storage battery pack, the positive electrode and the negative electrode of the storage battery pack can be rapidly cut off, and rapid response is made when the storage battery pack expands.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a schematic perspective view of the present utility model.

Fig. 3 is a top view of the present utility model.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "leaf level," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Referring to fig. 1-3, a battery expansion detection device includes a battery box 10, a battery pack 20 disposed in the battery box 10, an expansion displacement plate 30 slidingly connected to an inner wall of the battery box 10, two sliding terminals 40 fixed on the expansion displacement plate 30 and slidingly contacting with positive and negative poles of the battery pack 20, two connection terminals 50 fixed on the battery box 10, and a conductive member connected between the sliding terminals 40 and the connection terminals 50, where positive and negative poles of the battery pack 20 refer to positive and negative poles formed by assembling a battery, and during normal operation, positive and negative poles of the battery pack 20 are connected with the sliding terminals 40, the sliding terminals 40 are connected with the connection terminals 50 through the conductive member, so that the battery pack 20 can directly supply power to the outside through the connection terminals 50, an elastic member is fixed on the inner wall of the battery box 10, one surface of the expansion displacement plate 30 far away from the battery pack 20 is in contact with the elastic member, and when the battery pack 20 expands, the expansion displacement plate 30 is pushed to move in a direction far away from the battery pack 20, so that the positive and negative poles of the battery pack 20 are separated from the positive and negative poles of the battery pack 20, and the positive and negative poles of the battery pack 20 are disconnected with the positive and negative poles of the battery pack 20 are stopped, and the positive and negative poles of the battery pack 20 are tightly connected with the connection terminals 50.

Further, in order to send out an early warning to the outside when the battery pack 20 expands, the battery case 10 is provided with an early warning device 60, the early warning device 60 includes two connection terminals 61 fixed on one side of the expansion displacement plate 30 facing away from the battery pack 20, two positive and negative electrode terminals 62 and 63 fixed on two sides of the inner wall of the battery case 10, and a battery 64 and a bulb 65 connected between the positive and negative electrode terminals 62 and 63 through wires, wherein the two connection terminals 61 are connected through wires, the connection terminals 61 are normally separated from the positive and negative electrode terminals 62 and 63, at this time, the bulb 65 is not supplied with power, and when the battery pack 20 expands, the expansion displacement plate 30 moves, so that the two connection terminals 61 are in contact with the positive and negative electrode terminals 62 and 63, the two connection terminals 61, the positive and negative electrode terminals 62 and 63, the battery 64 and the bulb 65 form a complete closed loop, so that the bulb 65 is lightened, and an early warning is sent to the outside.

The bottom of battery case 10 is fixed to be equipped with limiting plate 11 that two blocks set up of standing, storage battery 20 stands the setting in the bottom of battery case 10, and storage battery 20 is located between limiting plate 11, carries out spacingly through limiting plate 11, storage battery 20 deviates from the one side of expansion displacement board 30 and the inner wall fixed connection of battery case 10, and when storage battery 20 expands, storage battery 20's thickness increases towards the direction of expansion displacement board 30, promotes expansion displacement board 30 and removes.

Specifically, the conductive member is a conductive wire 70, one end of the conductive wire 70 is connected to the connection terminal 50, and the other end of the conductive member is connected to the sliding terminal 40.

Specifically, the elastic member is a rubber block 80, a chute 12 is provided on the inner wall of the battery box 10, the expansion displacement plate 30 is slidably connected with the chute 12, the rubber block 80 is fixed in the chute 12, and one surface of the expansion displacement plate 30 facing away from the battery pack 20 is abutted against the rubber block 80.

The battery box 10 is hinged with a box cover 13.

Referring to fig. 2, the chute 12 has a structure similar to a parallelogram, and the shape of the expansion displacement plate 30 is adapted to the shape of the chute 12, when the expansion displacement plate 30 slides in a direction away from the battery pack 20, the expansion displacement plate 30 integrally moves toward the upper end of the battery case 10 under the guidance of the chute 12, so that the sliding terminal 40 is separated from the positive and negative electrodes of the battery pack 20, and the positive and negative electrodes of the battery pack 20 and the connection terminal 50 can be rapidly cut off.

The sliding terminal 40 has an L-shaped structure.

Working principle: when the storage battery pack 20 is expanded, the expansion displacement plate 30 is pushed to move, so that the two connecting terminals 61 are contacted with the positive electrode terminal 62 and the negative electrode terminal 63, the two connecting terminals 61, the positive electrode terminal 62, the negative electrode terminal 63, the battery 64 and the bulb 65 form a complete closed loop, the bulb 65 is lightened, early warning is sent to the outside, meanwhile, when the sliding terminal 40 slides away from the positive electrode and the negative electrode of the storage battery pack 20, under the guiding action of the sliding groove 12, the expansion displacement plate 30 integrally moves towards the upper end of the battery box 10, the sliding terminal 40 is separated from the positive electrode and the negative electrode of the storage battery pack 20, the positive electrode and the negative electrode of the storage battery pack 20 and the wiring terminal 50 can be cut off quickly, and quick response is made when the storage battery pack 20 is expanded.

The embodiments of the present utility model and the accompanying drawings are only for illustrating the design concept of the present utility model, and the scope of the present utility model should not be limited to this embodiment.

From the above, it can be seen that the design object of the present utility model can be effectively implemented. Portions of the embodiments illustrate the objects of the utility model, as well as the functional and structural subject matter of the implementation, and include other equivalents and alternatives.

Therefore, the utility model is defined by the claims to include other equivalent implementations, with reference to the claims for the full scope of the claims.

Claims (8)

1. A battery expansion detection device, characterized in that: including the battery box, set up storage battery in the battery box, sliding connection be in the expansion displacement board of battery box inner wall, fix two on the expansion displacement board with the positive negative pole sliding contact's of storage battery sliding terminal, fix two binding post on the battery box and connect the conductive member between sliding terminal and the binding post, the inner wall of battery box is fixed with elastic component, the expansion displacement board is kept away from the one side of storage battery and is inconsistent with elastic component.

2. A battery expansion detecting device according to claim 1, wherein: the battery box is internally provided with an early warning device, the early warning device comprises two connecting terminals fixed on one surface of the expansion displacement plate, which is away from the storage battery, two positive and negative terminals fixed on two sides of the inner wall of the battery box, and a battery and a bulb which are connected between the positive and negative terminals through wires, wherein the two connecting terminals are connected through wires.

3. A battery expansion detecting device according to claim 1, wherein: the bottom of battery box is fixed and is equipped with the limiting plate that two blocks set up of standing, storage battery stands the setting in the bottom of battery box, and storage battery is located between the limiting plate, storage battery deviates from the one side of inflation displacement board and the inner wall fixed connection of battery box.

4. A battery expansion detecting device according to claim 1, wherein: the conductive member is a conductive wire, one end of the conductive wire is connected with the wiring terminal, and the other end of the conductive member is connected with the sliding terminal.

5. A battery expansion detecting device according to claim 1, wherein: the elastic component is the rubber piece, the inner wall of battery box is equipped with the spout, inflation displacement board and spout sliding connection, the rubber piece is fixed in the spout, inflation displacement board back is inconsistent with the rubber piece from storage battery's one side.

6. A battery expansion detecting device according to claim 1, wherein: the battery box is hinged with a box cover.

7. A battery expansion detecting device according to claim 5, wherein: the chute is of an inclined structure.

8. A battery expansion detecting device according to claim 5, wherein: the sliding terminal is of an L-shaped structure.