Lithium battery expansion detection device

Abstract

The utility model belongs to the technical field of lithium battery detection, and particularly relates to a lithium battery expansion detection device which comprises a detection frame, inner and outer sliding rods are installed on four side plates of the detection frame in a sliding and penetrating mode, the inner and outer sliding rods are evenly distributed from bottom to top, and the ends, located in the detection frame, of the inner and outer sliding rods are fixedly connected with a mounting frame. A rotating shaft is rotationally mounted on the mounting frame, and a detection compression roller is fixedly mounted on the rotating shaft. According to the utility model, the internal space of the detection frame corresponds to the original size of the lithium battery, the lithium battery to be detected is inserted into the detection frame from the inlet of the frame, and during the period, if one side of the shell of the lithium battery expands or the whole body expands, the detection compression roller is extruded, and the internal and external slide rods slide towards the square sleeve plate at the outer side; the reset spring is stretched, the touch plate abuts against the pressure sensor, the pressure sensor detects pressure, it is judged that the expansion degree of the lithium battery is too large, detection is simple, and the speed is high.

Description

Technical Field

[0001] The utility model relates to a lithium battery detection device, in particular to a lithium battery expansion detection device. Background Art

[0002] With the shortage of energy and the deterioration of the environment, new energy technologies are being used and promoted more and more. Among them, lithium-ion batteries are environmentally friendly products due to their high energy density, low self-discharge and good cycle performance. These characteristics have led to the rapid development of lithium-ion batteries. For energy batteries, it is generally believed that the battery's life ends when its available capacity decays to 80% of the initial capacity. The battery life includes cycle life and calendar life. The former refers to the number of cycles that the battery undergoes with a certain charge and discharge regime until the end of its life, and the latter refers to the time required for the battery to be stored in a certain state until the end of its life.

[0003] As the use time increases, the lithium battery will swell. In the prior art, the pressure of the lithium battery is generally detected by a pressure sensor. When the lithium battery swells, the data detected by the pressure sensor will change. The pressure sensor is set at a fixed point, which may result in incomplete detection and the detection operation is relatively cumbersome. Utility Model Content

[0004] The main purpose of the present disclosure is to provide a lithium battery expansion detection device to effectively solve the problems raised by the inventor in the above background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A lithium battery expansion detection device comprises a detection frame, four side panels of the detection frame are slidably penetrated by inner and outer sliding rods, and the inner and outer sliding rods are evenly distributed from bottom to top, one end of the inner and outer sliding rods located in the detection frame is fixedly connected to a mounting frame, and a rotating shaft is rotatably installed on the mounting frame, a detection pressure roller is fixedly installed on the rotating shaft, and the size of the detection pressure roller is larger than that of the mounting frame, one end of the inner and outer sliding rods located outside the detection frame is fixedly connected to a touch plate, and the outer ends of the four side panels of the detection frame are provided with pressure detection components.

[0007] Preferably, the pressure detection assembly includes a positioning rod, a square sleeve plate and a pressure sensor, the positioning rod is fixedly connected to the outside of the detection frame, the square sleeve plate is detachably installed on the positioning rod, and a plurality of pressure sensors are evenly embedded and installed on the square sleeve plate, and the pressure sensors correspond to the touch panels one by one.

[0008] Preferably, a portion of the inner and outer slide bars outside the detection frame is sleeved with a return spring, one end of the return spring is fixedly connected to the detection frame, and the other end is fixedly connected to the surface of the inner and outer slide bars.

[0009] Preferably, the positioning rod is a positioning screw, the square sleeve is slidably sleeved on the positioning screw, each of the positioning screws is threadedly connected with two locking nuts, and the two locking nuts are respectively located on both sides of the square sleeve, and a gasket is sleeved between the square sleeve and the locking nut.

[0010] Preferably, four frame bars are installed on the top of the detection frame, and the four frame bars form a frame, and the inner sides of the frame bars are inclined.

[0011] Preferably, a plurality of self-locking moving wheels are installed at the bottom of the detection frame.

[0012] In view of this, compared with the prior art, the beneficial effects of the utility model are:

[0013] (I) In the present application, the internal space of the detection frame corresponds to the original size of the lithium battery. The lithium battery to be detected is inserted into the detection frame from the entrance of the frame. During this period, if one side of the lithium battery shell expands or the entire shell expands, the detection roller will be squeezed, and the inner and outer slide bars will slide toward the outer square sleeve plate, and the reset spring will be stretched, so that the touch plate will contact the pressure sensor. The pressure sensor detects pressure and determines that the expansion of the lithium battery is too large. The detection is simple and fast.

[0014] (ii) In the present application, when the lithium battery is fully inserted into the detection frame, the pressure sensors distributed from bottom to top make it possible to know the specific expansion position of the lithium battery, and the square sleeve is installed by positioning screws and locking nuts, so that the position of the square sleeve can be trimmed, and the square sleeve can be disassembled and assembled for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Shown is a schematic diagram of the structure of the lithium battery expansion detection device provided by the utility model;

[0016] Figure 2 Shown is a schematic diagram of the internal structure of the detection frame;

[0017] Figure 3 Shown Figure 1 The enlarged schematic diagram of point A in the middle;

[0018] Figure 4 Shown is a top view of the frame strip.

[0019] icon:

[0020] 1-detection frame; 2-inner and outer slide bars; 3-rotating shaft; 4-detection pressure roller; 5-reset spring; 6-touch plate; 7-square sleeve plate; 8-pressure sensor; 9-positioning screw; 10-locking nut; 11-gasket; 12-frame strip; 13-self-locking moving wheel. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 , the utility model provides the following embodiments:

[0023] A lithium battery expansion detection device comprises a detection frame 1, four side panels of the detection frame 1 are all slidably penetrated with inner and outer slide bars 2, and the inner and outer slide bars 2 are evenly distributed from bottom to top, one end of the inner and outer slide bars 2 located in the detection frame 1 is fixedly connected to a mounting frame, and a rotating shaft 3 is rotatably installed on the mounting frame, a detection roller 4 is fixedly installed on the rotating shaft 3, and the size of the detection roller 4 is larger than the size of the mounting frame, one end of the inner and outer slide bars 2 located outside the detection frame 1 is fixedly connected to a touch plate 6, the outer ends of the four side panels of the detection frame 1 are all provided with pressure detection components, the pressure detection component comprises a positioning rod, a square sleeve plate 7 and a pressure sensor 8, the positioning rod is fixedly connected to the outer side of the detection frame 1, the square sleeve plate 7 is detachably installed on the positioning rod, a plurality of pressure sensors 8 are evenly embedded and installed on the square sleeve plate 7, and the pressure sensors 8 correspond to the touch plates 6 one by one.

[0024] Specifically, a portion of the inner and outer slide bars 2 outside the detection frame 1 is sleeved with a return spring 5 , one end of the return spring 5 is fixedly connected to the detection frame 1 , and the other end is fixedly connected to the surface of the inner and outer slide bars 2 .

[0025] Specifically, the positioning rod is a positioning screw 9, and the square sleeve 7 is slidably sleeved on the positioning screw 9. Two locking nuts 10 are threadedly connected to each positioning screw 9, and the two locking nuts 10 are respectively located on both sides of the square sleeve 7, and a gasket 11 is sleeved between the square sleeve 7 and the locking nuts 10.

[0026] Specifically, four frame bars 12 are installed on the top of the detection frame 1, and the four frame bars 12 form a frame. The inner side of the frame bars 12 is inclined to facilitate the insertion of the lithium battery into the detection frame 1. A number of self-locking moving wheels 13 are installed at the bottom of the detection frame 1 to facilitate the movement and placement of the detection device.

[0027] The specific implementation of this embodiment is as follows: the internal space of the detection frame 1 corresponds to the original size of the lithium battery, and the lithium battery to be detected is inserted into the detection frame 1 from the entrance of the frame. During this period, if one side of the lithium battery shell expands or the entire shell expands, the detection roller 4 will be squeezed, and the inner and outer slide bars 2 will slide toward the outer square sleeve plate 7, and the return spring 5 will be stretched, so that the touch plate 6 will contact the pressure sensor 8. The pressure sensor 8 detects pressure, and it is determined that the lithium battery has expanded too much. The detection is simple and fast.

[0028] When the lithium battery is fully inserted into the detection frame 1, the pressure sensors 8 distributed from bottom to top make it possible to know the specific expansion position of the lithium battery, and the square sleeve 7 is installed using a positioning screw 9 and a locking nut 10, so that the position of the square sleeve 7 can be adjusted, and the square sleeve 7 can be disassembled and assembled to facilitate maintenance of the pressure sensor 8.

[0029] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0030] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A lithium battery expansion detection device, characterized in that: The invention comprises a detection frame (1), wherein inner and outer slide bars (2) are slidably installed on four side plates of the detection frame (1), and the inner and outer slide bars (2) are evenly distributed from bottom to top, one end of the inner and outer slide bars (2) located in the detection frame (1) is fixedly connected to a mounting frame, and a rotating shaft (3) is rotatably installed on the mounting frame, a detection pressure roller (4) is fixedly installed on the rotating shaft (3), and the size of the detection pressure roller (4) is larger than that of the mounting frame, one end of the inner and outer slide bars (2) located outside the detection frame (1) is fixedly connected to a touch plate (6), and the outer ends of the four side plates of the detection frame (1) are provided with pressure detection components.

2. A lithium battery expansion detection device according to claim 1, characterized in that: The pressure detection component comprises a positioning rod, a square sleeve (7) and a pressure sensor (8); the positioning rod is fixedly connected to the outside of the detection frame (1); the square sleeve (7) is detachably mounted on the positioning rod; a plurality of pressure sensors (8) are evenly embedded and mounted on the square sleeve (7); and the pressure sensors (8) correspond one to one with the touch panels (6).

3. A lithium battery expansion detection device according to claim 2, characterized in that: The portion of the inner and outer slide bars (2) located outside the detection frame (1) is sleeved with a return spring (5); one end of the return spring (5) is fixedly connected to the detection frame (1), and the other end is fixedly connected to the surface of the inner and outer slide bars (2).

4. A lithium battery expansion detection device according to claim 2, characterized in that: The positioning rod is a positioning screw (9), and the square sleeve (7) is slidably sleeved on the positioning screw (9). Two locking nuts (10) are threadedly connected to each of the positioning screws (9), and the two locking nuts (10) are respectively located on both sides of the square sleeve (7), and a gasket (11) is sleeved between the square sleeve (7) and the locking nut (10).

5. A lithium battery expansion detection device according to claim 1, characterized in that: Four frame bars (12) are installed on the top of the detection frame (1), and the four frame bars (12) form a frame, and the inner sides of the frame bars (12) are arranged obliquely.

6. A lithium battery expansion detection device according to claim 1, characterized in that: A plurality of self-locking moving wheels (13) are installed at the bottom of the detection frame (1).

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