CN213302470U

CN213302470U - Multi-purpose lithium ion battery internal resistance testing system

Info

Publication number: CN213302470U
Application number: CN202022340094.0U
Authority: CN
Inventors: 潘斌; 黄瑶; 钮树强
Original assignee: Huzhou Pulan Advanced Materials And Energy Storage Device Research Institute
Current assignee: Huzhou Pulan Advanced Materials And Energy Storage Device Research Institute
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-05-28
Anticipated expiration: 2030-10-20

Abstract

The utility model discloses a multipurpose lithium ion battery internal resistance test system, including explosion-proof test case, relay, electrochemistry tester, internal resistance tester and data acquisition card, a plurality of aviation plugs are installed to explosion-proof test case's lateral wall, electrochemistry tester with internal resistance tester respectively with explosion-proof test case's inner wall sliding connection, and electrochemistry tester is located the internal resistance tester under, explosion-proof test case's lower extreme inner wall fixedly connected with driving motor, driving motor's output shaft fixedly connected with ball, the last sliding plate that is connected with rather than matching of ball, the upper end lateral wall fixedly connected with baffle of sliding plate, two lifters of lateral wall fixedly connected with of sliding plate. The utility model discloses can carry out electrochemistry to the battery in the explosion-proof test case with automatic and detect with the internal resistance, the testing process is quick accurate to the case mouth is sent to the battery that will detect, is convenient for get and puts.

Description

Multi-purpose lithium ion battery internal resistance testing system

Technical Field

The utility model relates to an internal resistance test technical field especially relates to a multipurpose lithium ion battery internal resistance test system.

Background

A lithium ion battery is a type of rechargeable battery that mainly relies on lithium ions moving between a positive electrode and a negative electrode to operate. During the charge and discharge process, lithium ions are intercalated and deintercalated between the two electrodes: during charging, lithium ions are extracted from the positive electrode and are inserted into the negative electrode through the electrolyte, the negative electrode is in a lithium-rich state, and the opposite is realized during discharging; compared with the traditional battery technology, the lithium ion battery has the advantages of faster charging, more durable use, longer battery service time due to higher power density and lighter body.

Because of the high energy concentration advantage of the lithium ion battery, the larger the capacity is, the smaller the internal resistance is; therefore, in the research and development and trial production processes of the lithium ion battery, the internal resistance of the lithium ion battery needs to be tested, the battery capacity can be evaluated and judged according to the internal resistance, and when a large current is adopted for testing the internal resistance of the battery under certain conditions, the temperature of the battery is overhigh, and battery explosion is easily caused.

In the prior art, when testing the internal resistance of the battery, the battery is very inconvenient to take and place, other devices are easy to touch, damage is caused, and when testing, devices such as an electrochemical tester and an internal resistance tester need to be used for testing respectively, the position of the battery is moved manually, the labor burden is greatly increased, and the testing time is prolonged.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving among the prior art battery and putting in the test box and get put inconvenience, manual removal battery carries out electrochemistry test and internal resistance test moreover, delays the problem of time, and the multipurpose lithium ion battery internal resistance test system who provides.

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

a multi-purpose lithium ion battery internal resistance test system comprises an explosion-proof test box, a relay, an electrochemical tester, an internal resistance tester and a data acquisition card, wherein a plurality of aviation plugs are installed on the side wall of the explosion-proof test box, the electrochemical tester and the internal resistance tester are respectively connected with the inner wall of the explosion-proof test box in a sliding manner, the electrochemical tester is positioned under the internal resistance tester, the inner wall of the lower end of the explosion-proof test box is fixedly connected with a driving motor, the output shaft of the driving motor is fixedly connected with a ball screw, the ball screw is connected with a sliding plate matched with the ball screw, the side wall of the upper end of the sliding plate is fixedly connected with a baffle plate, the side wall of the sliding plate is fixedly connected with two lifting rods, the two lifting rods are both connected with the inner wall of the explosion-proof test box in a sliding manner, one end of the special-shaped rod is fixedly connected with a special-shaped block.

Preferably, the mounting groove has been seted up to the lateral wall of lifter, the inner wall of mounting groove passes through expanding spring fixedly connected with splint, splint and the inner wall sliding connection of mounting groove.

Preferably, the inner wall of the lower end of the explosion-proof test box is fixedly connected with two fixing rods, the two fixing rods are respectively located on two sides of the electrochemical tester, the side wall of each fixing rod is fixedly connected with two groups of buffer springs, and each group of the two buffer springs are respectively connected with the chemical tester and the internal resistance tester in a clamping mode.

Preferably, the inner wall of the explosion-proof test box is fixedly connected with a limiting plate, and the side wall of the limiting plate is rotatably connected with the ball screw.

Preferably, the explosion-proof test box is made of metal, a carrying handle is installed on the side wall, and a rubber pad wraps the side wall of the carrying handle.

Preferably, the projection of the side wall of the special-shaped block is isosceles trapezoid, and the side wall of the special-shaped block is provided with a chamfer.

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

when testing, put the battery on the sliding plate, the width of battery is greater than the width of sliding plate, utilize driving motor to drive ball and rotate, and then drive sliding plate and battery and rise, rise along with the lifter, dysmorphism pole and dysmorphism piece can support electrochemistry tester and internal resistance tester in proper order and be close to the battery, thereby carry out electrochemistry detection and internal resistance detection to the battery respectively automatically, detect process automation, it is light to staff's work burden, and after the detection is accomplished, the case mouth that has also sent the explosion proof test case with the battery goes out, be convenient for get and put. In addition, the battery test box made of metal materials can shield electromagnetic interference, reduce data noise and improve the reliability of test results.

Drawings

Fig. 1 is a schematic perspective view of a multi-purpose lithium ion battery internal resistance testing system according to the present invention;

FIG. 2 is a left side view of the structure of FIG. 1;

fig. 3 is a schematic left-view cross-sectional structural diagram of a multi-purpose lithium ion battery internal resistance testing system provided by the present invention;

fig. 4 is a schematic top-view cross-sectional structural diagram of a multi-purpose lithium ion battery internal resistance testing system provided by the present invention;

fig. 5 is a schematic view of the structure at a in fig. 4.

In the figure: 1 explosion-proof test box, 2 relay, 3 electrochemical tester, 4 data acquisition card, 5 aviation plug, 6 driving motor, 7 ball screw, 8 sliding plate, 9 baffle, 10 lifter, 11 special-shaped rod, 12 special-shaped block, 13 expansion spring, 14 splint, 15 dead lever, 16 buffer spring, 17 limiting plate, 18 carrying handle, 19 internal resistance tester.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-5, a multi-purpose lithium ion battery internal resistance test system comprises an explosion-proof test box 1, a relay 2, an electrochemical tester 3, an internal resistance tester 19 and a data acquisition card 4, wherein a plurality of aviation plugs 5 are installed on the side wall of the explosion-proof test box 1, the electrochemical tester 3 and the internal resistance tester 19 are respectively connected with the inner wall of the explosion-proof test box 1 in a sliding manner, the electrochemical tester 3 is positioned under the internal resistance tester 19, a driving motor 6 is fixedly connected with the inner wall of the lower end of the explosion-proof test box 1, a ball screw 7 is fixedly connected with an output shaft of the driving motor 6, a sliding plate 8 matched with the ball screw 7 is connected with the ball screw 7, a baffle 9 is fixedly connected with the side wall of the upper end of the sliding plate 8, two lifting rods 10 are fixedly connected with the side wall of the sliding plate 8, both lifting rods 10 are connected with the inner wall of the explosion-, one end of the special-shaped rod 11 is fixedly connected with a special-shaped block 12;

the side wall of the lifting rod 10 is provided with a mounting groove, the inner wall of the mounting groove is fixedly connected with a clamping plate 14 through a telescopic spring 13, the clamping plate 14 is in sliding connection with the inner wall of the mounting groove, and the clamping plate 14 can stably clamp the battery by utilizing the elasticity of the telescopic spring 13, so that the battery is ensured to be stable enough when moving;

the inner wall of the lower end of the explosion-proof test box 1 is fixedly connected with two fixing rods 15, the two fixing rods 15 are respectively positioned on two sides of the electrochemical tester 3, the side wall of each fixing rod 15 is fixedly connected with two groups of buffer springs 16, each group of two buffer springs 16 is respectively connected with the chemical tester and the internal resistance tester 19 in a clamping mode, when the special-shaped block 12 is in contact with the electrochemical tester 3 or the internal resistance tester 19 and moves, the buffer springs 16 can deform, and after the special-shaped block is separated from the electrochemical tester 3 or the internal resistance tester 19, the special-shaped block can be quickly restored to the original position under the action of the rebound force of the buffer springs 16;

the inner wall of the explosion-proof test box 1 is fixedly connected with a limiting plate 17, and the side wall of the limiting plate 17 is rotatably connected with the ball screw 7, so that the sliding plate 8 can be blocked and prevented from falling off from the ball screw 7;

the side wall of the explosion-proof test box 1 is provided with a handle 18, the side wall of the handle 18 is wrapped with a rubber pad, and the handle can be used for easily driving the explosion-proof test box 1 to move;

the side wall projection of dysmorphism piece 12 is isosceles trapezoid, and the lateral wall of dysmorphism piece 12 is equipped with the chamfer, and like this dysmorphism piece 12 can alleviate its wearing and tearing when contacting with electrochemical tester 3 or internal resistance tester 19.

When the utility model is used for detecting the battery, the battery is placed on the sliding plate 8, then the driving motor 6 is used for driving the ball screw 7 to rotate, the ball screw 7 drives the sliding plate 8 and the lifting rod 10 to rise, the lifting rod 10 drives the special-shaped rod 11 to rise, the special-shaped rod 11 drives the special-shaped block 12 to rise, the special-shaped block 12 supports against the electrochemical tester 3 to move in the rising process, the electrochemical tester 3 is close to the battery, thereby completing the electrochemical detection of the battery, then the lifting rod 10 and the sliding plate 8 continue to rise, the special-shaped block 12 is separated from the electrochemical tester 3 and is contacted with the internal resistance tester 19, thus supporting against the internal resistance tester 19 to move, further the internal resistance tester 19 detects the internal resistance of the battery, the automation degree of the whole process is high, the result of the battery detection is accurate, the work burden of the working personnel is light, and after the, the battery is also delivered to the box opening of the explosion-proof test box to be discharged, so that the battery is convenient to take and place.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A multi-purpose lithium ion battery internal resistance test system comprises a metal explosion-proof test box (1), a relay (2), an electrochemical tester (3), an internal resistance tester (19) and a data acquisition card (4), wherein a plurality of aviation plugs (5) are installed on the side wall of the explosion-proof test box (1), the multi-purpose lithium ion battery internal resistance test system is characterized in that the electrochemical tester (3) and the internal resistance tester (19) are respectively in sliding connection with the inner wall of the explosion-proof test box (1), the electrochemical tester (3) is positioned under the internal resistance tester (19), the inner wall of the lower end of the explosion-proof test box (1) is fixedly connected with a driving motor (6), the output shaft of the driving motor (6) is fixedly connected with a ball screw (7), the ball screw (7) is connected with a sliding plate (8) matched with the ball screw, the side wall of the upper end of the sliding plate (8) is fixedly connected with, the side wall of the sliding plate (8) is fixedly connected with two lifting rods (10), the two lifting rods (10) are both in sliding connection with the inner wall of the explosion-proof test box (1), a special-shaped rod (11) is fixedly connected between the side walls of the two lifting rods (10), and one end of the special-shaped rod (11) is fixedly connected with a special-shaped block (12).

2. The multipurpose lithium ion battery internal resistance testing system according to claim 1, wherein a mounting groove is formed in a side wall of the lifting rod (10), a clamping plate (14) is fixedly connected to an inner wall of the mounting groove through a telescopic spring (13), and the clamping plate (14) is slidably connected with the inner wall of the mounting groove.

3. The multipurpose lithium ion battery internal resistance testing system according to claim 1, characterized in that two fixing rods (15) are fixedly connected to the inner wall of the lower end of the explosion-proof test box (1), the two fixing rods (15) are respectively located at two sides of the electrochemical tester (3), two groups of buffer springs (16) are fixedly connected to the side walls of the fixing rods (15), and each group of two buffer springs (16) are respectively connected with the chemical tester and the internal resistance tester (19) in a clamping manner.

4. The multipurpose lithium ion battery internal resistance testing system according to claim 1, wherein a limiting plate (17) is fixedly connected to the inner wall of the explosion-proof test box (1), and the side wall of the limiting plate (17) is rotatably connected with the ball screw (7).

5. The multipurpose lithium ion battery internal resistance testing system according to claim 1, wherein a handle (18) is mounted on the side wall of the explosion-proof test box (1), and a rubber pad is wrapped on the side wall of the handle (18).

6. The multipurpose lithium ion battery internal resistance testing system according to claim 1, wherein the projection of the side wall of the shaped block (12) is isosceles trapezoid, and the side wall of the shaped block (12) is provided with a chamfer.