CN216595425U

CN216595425U - External short circuit testing arrangement of multichannel lithium cell

Info

Publication number: CN216595425U
Application number: CN202122892133.2U
Authority: CN
Inventors: 陶志剛; 吴李慧
Original assignee: Guangdong Xinbao Testing Co ltd; Dongguan Polytechnic
Current assignee: Guangdong Xinbao Testing Co ltd; Dongguan Polytechnic
Priority date: 2021-11-23
Filing date: 2021-11-23
Publication date: 2022-05-24
Anticipated expiration: 2031-11-23

Abstract

The utility model discloses a multi-channel lithium battery external short circuit testing device, which consists of a box body and an upper cover, wherein the rear side of the box body is connected with the rear side of the upper cover through a rotating shaft, the left inner side surface and the right inner side surface of the box body are respectively provided with a first detection module and a second detection module, the left outer side surface and the right outer side surface of the box body are respectively provided with a first temperature display and a second temperature display, a first magnetic switch is electrically connected between the first detection module and the first temperature display, a second magnetic switch is electrically connected between the second detection module and the second temperature display, the magnetic surfaces of the first magnetic switch and the second magnetic switch are respectively exposed out of the two ends of the front side of the box body, the front side of the upper cover is provided with a voltmeter, the two ends of the front side of the upper cover are respectively provided with a first magnet downwards in a protruding manner, the inner side surfaces of the first buckling block and the second buckling block are provided with a first magnetic triggering part and a second magnetic triggering part, and the positive end and the negative end of the voltmeter are respectively and electrically connected with the first magnetic triggering part and the second magnetic triggering part. The utility model can monitor temperature and voltage, has high detection efficiency, simple operation and convenient carrying.

Description

External short circuit testing arrangement of multichannel lithium cell

Technical Field

The utility model relates to the technical field of lithium batteries, in particular to a multi-channel lithium battery external short circuit testing device.

Background

Due to the characteristics of materials, the lithium ion battery is short-circuited outside, and the possibility of battery explosion and ignition exists. Direct external short circuit easily causes safety accidents, and in order to avoid the accidents, the lithium ion battery needs to be subjected to external short circuit test before leaving a factory. Because the test factors and the situations considered by each country are slightly different, when the termination condition of the external short circuit test is formulated, the reference physical quantity is not unique, some specific temperature value is used as the test termination condition, some specific voltage value is used as the test termination condition, and the test termination condition is disordered when the external short circuit test is completed.

The currently used external short circuit testing device for the lithium battery only monitors temperature or voltage, has single function, can only test a single lithium battery at each time, and has low detection efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide the multi-channel lithium battery external short circuit testing device which can monitor different test termination conditions of external short circuit testing, can monitor temperature and voltage, has high detection efficiency and is simple to operate.

The technical scheme of the utility model is as follows:

a multichannel lithium battery external short circuit testing device is composed of a box body and an upper cover, wherein the rear side of the box body is connected with the rear side of the upper cover through a rotating shaft, a battery accommodating cavity is arranged in the box body, the left inner side and the right inner side of the box body are respectively provided with a first detection module and a second detection module which correspond to the battery accommodating cavity, the first detection module and the second detection module are respectively integrated with a temperature sensor and a voltage sensor, the left outer side and the right outer side of the box body are respectively provided with a first temperature display and a second temperature display, a first magnetic suction switch is electrically connected between the first detection module and the first temperature display, a second magnetic suction switch is electrically connected between the second detection module and the second temperature display, the magnetic suction surfaces of the first magnetic suction switch and the second magnetic suction switch are respectively exposed from the two ends of the front side of the box body, the front side of the upper cover is provided with a voltmeter, the utility model discloses a switch, including upper cover, first magnetism, second magnetism, first magnetism trigger piece and second magnetism trigger piece, the switch is inhaled to first magnetism, the switch is inhaled to second magnetism, the positive and negative both ends of voltmeter respectively with first magnetism trigger piece, second magnetism trigger piece electricity are connected to the front side both ends of upper cover downward protruding be equipped with first knot piece and second knot piece respectively, the medial surface of first knot piece, second knot piece is provided with respectively corresponding the switch is inhaled to first magnetism, the switch is inhaled to the second magnetism.

Furthermore, the battery cavity is composed of a plurality of first positioning grooves arranged side by side, and a plurality of first detection modules and a plurality of second detection modules corresponding to the first positioning grooves respectively are arranged on the left inner side surface and the right inner side surface of the box body.

Furthermore, a plurality of second positioning grooves respectively corresponding to the first positioning grooves are formed in the inner side surface of the upper cover.

Furthermore, the surfaces of the first positioning groove and the second positioning groove are covered with insulating layers.

Compared with the prior art, the utility model has the beneficial effects that:

1) the utility model can monitor temperature and voltage, and meets the external short circuit test requirements of various domestic and foreign lithium battery detection standards;

2) the detection circuit can be communicated when the upper cover is covered, and can be closed when the upper cover is opened, so that the operation is simple;

3) a plurality of lithium batteries can be tested simultaneously, and the detection efficiency is high;

4) the device has small volume, is convenient to carry and is easy to popularize.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a perspective view of the structure of the present invention;

fig. 2 is a schematic circuit diagram of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

In order to explain the technical means of the present invention, the following description will be given by way of specific examples.

Examples

Referring to fig. 1 and 2, the embodiment provides a multi-channel lithium battery external short circuit testing device, which comprises a box body 1 and an upper cover 2, wherein the rear side of the box body 1 is connected with the rear side of the upper cover 2 through a rotating shaft 3, a battery cavity is arranged in the box body 1, the battery cavity is composed of a plurality of first positioning grooves 11 arranged side by side, the left and right inner side surfaces of the box body 1 are provided with a plurality of first detection modules 4 and second detection modules respectively corresponding to the first positioning grooves 11, the first detection modules 4 and the second detection modules are respectively integrated with a temperature sensor and a voltage sensor, the left and right outer side surfaces of the box body 1 are respectively provided with a first temperature display and a second temperature display 5, a first magnetic switch 6 is electrically connected between the first detection module 4 and the first temperature display, a second magnetic switch 7 is electrically connected between the second detection modules and the second temperature display 5, the magnetic attraction surfaces of the first magnetic attraction switch 6 and the second magnetic attraction switch 7 are respectively exposed from two ends of the front side of the box body 1, the front side of the upper cover 2 is provided with a voltmeter 8, two ends of the front side of the upper cover 2 are respectively provided with a first buckling block 21 and a second buckling block 22 in a downward protruding mode, the inner side surfaces of the first buckling block 21 and the second buckling block 22 are respectively provided with a first magnetic trigger and a second magnetic trigger which respectively correspond to the magnetic attraction surfaces of the first magnetic attraction switch 6 and the second magnetic attraction switch 7, the positive end and the negative end of the voltmeter 8 are respectively electrically connected with the first magnetic trigger and the second magnetic trigger, the inner side surface of the upper cover 2 is provided with a plurality of second positioning grooves 23 which respectively correspond to the first positioning grooves 11, and the surfaces of the first positioning grooves 11 and the second positioning grooves 23 are covered with insulating layers.

The device is integrated to have temperature detect circuit and voltage detection circuit, temperature detect circuit is including anodal temperature detect circuit and negative pole temperature detect circuit, wherein, anodal temperature detect circuit is by first temperature sensor, first magnetism is inhaled switch 6, first temperature monitor is constituteed, negative pole temperature detect circuit is by second temperature sensor, switch 7 is inhaled to the second magnetism, second temperature monitor 5 is constituteed, voltage detect circuit is by first voltage sensor, second voltage sensor, first magnetism is inhaled switch 6, switch 7 is inhaled to the second magnetism, voltmeter 8 is constituteed, switch 6 is inhaled to first magnetism, switch 7 can be triggered by first magnetism when covering upper cover 2 to second magnetism, second magnetism triggers the piece and switches on.

During operation: putting a lithium battery into a first positioning groove 11, wherein the positive and negative ends of the lithium battery are respectively abutted against a first detection module 4 and a second detection module, a plurality of lithium batteries can be simultaneously put into a box body 1, after the lithium batteries are put in place, an upper cover 2 is covered, the positive and negative ends of the lithium batteries are respectively fixed with two magnetic attraction surfaces on the front side of the box body 1 through a first magnetic trigger part and a second magnetic trigger part on the front side of the upper cover 2 in a magnetic attraction manner, so that a temperature detection circuit and a voltage detection circuit are switched on, the temperature detection circuit respectively picks up the temperatures of the positive and negative ends of the lithium batteries through a first temperature sensor and a second temperature sensor and respectively displays the temperatures through a first temperature display and a second temperature display 5, and the voltage detection circuit picks up the voltages of the positive and negative ends of the lithium batteries through a voltage sensor and displays the voltages through an overvoltage meter 8; after the test finishes, open the moment of upper cover 2, temperature detection circuitry and voltage detection circuitry break off automatically promptly, take out the lithium cell from first positioning groove 11, can carry out the detection of next batch lithium cell.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an outside short circuit testing arrangement of multichannel lithium cell which characterized in that: the device consists of a box body and an upper cover, wherein the rear side of the box body is connected with the rear side of the upper cover through a rotating shaft, a battery containing cavity is arranged in the box body, the left inner side surface and the right inner side surface of the box body are respectively provided with a first detection module and a second detection module which correspond to the battery containing cavity, the first detection module and the second detection module are respectively integrated with a temperature sensor and a voltage sensor, the left outer side surface and the right outer side surface of the box body are respectively provided with a first temperature display and a second temperature display, a first magnetic suction switch is electrically connected between the first detection module and the first temperature display, a second magnetic suction switch is electrically connected between the second detection module and the second temperature display, the magnetic suction surfaces of the first magnetic suction switch and the second magnetic suction switch are respectively exposed from the two ends of the front side of the box body, the front side of the upper cover is provided with a voltmeter, the two ends of the front side of the upper cover are respectively provided with a first buckling block and a second buckling block in a downward protruding manner, the inner side surfaces of the first buckling block and the second buckling block are provided with a first magnetic trigger piece and a second magnetic trigger piece which respectively correspond to the magnetic attraction surfaces of the first magnetic attraction switch and the second magnetic attraction switch, and the positive end and the negative end of the voltmeter are respectively electrically connected with the first magnetic trigger piece and the second magnetic trigger piece.

2. The external short circuit testing device of the multi-channel lithium battery as claimed in claim 1, wherein: the battery cavity is composed of a plurality of first positioning grooves arranged side by side, and a plurality of first detection modules and a plurality of second detection modules corresponding to the first positioning grooves respectively are arranged on the left inner side and the right inner side of the box body.

3. The external short circuit testing device of the multi-channel lithium battery as claimed in claim 2, wherein: and a plurality of second positioning grooves respectively corresponding to the first positioning grooves are formed in the inner side surface of the upper cover.

4. The external short circuit test device of multi-channel lithium battery as claimed in claim 3, wherein: and the surfaces of the first positioning groove and the second positioning groove are covered with insulating layers.