CN218331889U

CN218331889U - Battery OCV testing arrangement

Info

Publication number: CN218331889U
Application number: CN202222283082.8U
Authority: CN
Inventors: 张保平
Original assignee: Chuneng New Energy Co Ltd
Current assignee: Chuneng New Energy Co Ltd
Priority date: 2022-08-29
Filing date: 2022-08-29
Publication date: 2023-01-17
Anticipated expiration: 2032-08-29

Abstract

The utility model relates to a battery OCV testing arrangement, including two test meter pen fixed plates, two test meter pens are installed respectively on two test meter pen fixed plates along the Z direction, still include bottom plate, Y spacing shelves strip, X spacing shelves strip, riser, guide bar fixed plate, keysets, plug-type anchor clamps, guide bar; the positions of the Y-limiting stop strip and the X-limiting stop strip are adjusted by forming the X-direction waist-shaped hole and the Y-direction waist-shaped hole in the middle of the bottom plate, so that the battery cell fixing device is suitable for the thicknesses and widths of battery cells with different specifications; the height of the push-pull type clamp is adjusted by forming a Z-direction waist-shaped hole in the middle of the vertical plate, so that the height of the push-pull type clamp is adapted to the heights of the battery cores with different specifications; the width, the thickness and the height of the battery cell with different specifications are correspondingly adjusted, and the device has the advantages of high universality, low cost, high testing efficiency, and high consistency and accuracy.

Description

Battery OCV testing arrangement

Technical Field

The utility model relates to a lithium ion battery field especially relates to a battery OCV testing arrangement.

Background

Currently, lithium ion batteries are widely used in various aspects of life, and include round batteries and square batteries, among which the square batteries are more widely used. Because the electric cores in the battery system have resistance, before the batteries are used for grouping, an Open Circuit Voltage (OCV) test needs to be carried out on each electric core, so that the problems that the battery system cannot reach rated charge-discharge capacity and the like due to large Voltage difference and over-specification internal resistance of grouped electric cores are avoided.

In the prior art, manual testing or tooling testing is usually adopted to perform the OCV test of a single battery cell. The manual test needs two testers to cooperate, one tester holds the test meter pen to test the voltage internal resistance of the battery cell, and the other tester records the test data manually. The manual testing mode is not only low in efficiency, but also has the problems that due to personal differences, the force and the angle of the test meter pen contacting the surface of the battery pole are different, the consistency of test data is poor, the probe of the test meter pen is damaged and the like. The existing testing tool can only carry out OCV testing on a certain type of battery cell, is made of metal, is high in cost, and needs to be subjected to insulation protection and the like.

Disclosure of Invention

The utility model aims at providing a battery OCV testing arrangement can solve and improve OCV efficiency of software testing and all can carry out the technical problem that OCV tested to the electric core of different specifications, has uniformity and advantage that the accuracy is high, the commonality is high, low cost.

In order to achieve the above object, the utility model relates to a battery OCV testing arrangement, including two test meter pen fixed plates, two test meter pens, install its characterized in that on two test meter pen fixed plates respectively along vertical direction for two test meter pens: the device also comprises a bottom plate, a Y-shaped limiting stop bar, an X-shaped limiting stop bar, a vertical plate, a guide rod fixing plate, an adapter plate, a push-pull type clamp and a guide rod;

the middle of the bottom plate is provided with at least one X-direction waist-shaped hole and at least one Y-direction waist-shaped hole which are perpendicular to each other, the X-direction waist-shaped hole is formed in the thickness direction of the battery, the Y-direction waist-shaped hole is formed in the width direction of the battery, the Y-direction limiting stop bar is installed in the X-direction waist-shaped hole through a first bolt and a first nut, and the X-direction limiting stop bar is installed in the Y-direction waist-shaped hole through a first bolt and a first nut;

the vertical plate is vertically arranged on the upper end surface of the bottom plate, and a Z-direction waist-shaped hole is formed in the middle of the vertical plate along the vertical direction; the guide rod fixing plate is vertically arranged at the upper end of the vertical plate, the adapter plate is parallelly arranged below the guide rod fixing plate, the two test meter pen fixing plates are arranged at the front end of the adapter plate, the upper end of the guide rod penetrates through the guide rod fixing plate, and the lower end of the guide rod is fixedly connected with the adapter plate; the rear end of the push-pull type clamp is arranged in the Z-direction waist-shaped hole, and the front end of the push-pull type clamp is fixedly connected with the adapter plate.

Preferably, the push-pull type clamp comprises a cushion block, a telescopic rod, a handle assembly, a shaft shoulder screw and a screw; the rear part of the shaft shoulder screw penetrates through the Z-direction waist-shaped hole to be in threaded connection with the back surface of the cushion block, the handle assembly is installed on the front surface of the cushion block, the telescopic rod is installed at the lower end of the handle assembly, and the rear part of the screw penetrates through the adapter plate to be fixedly connected with the bottom of the telescopic rod.

Further, the handle assembly comprises a handle, a fixing portion and a connecting portion, the fixing portion is fixedly connected with the front face of the cushion block, one end of the handle is hinged to the upper end of the fixing portion, the other end of the handle is hinged to the upper end of the connecting portion, the telescopic rod is installed in the vertical through hole of the fixing portion and upwards extends out of the vertical through hole, and the upper end of the telescopic rod is hinged to the lower end of the connecting portion.

Furthermore, two second Y-direction waist-shaped holes with the same central axis are formed in the front end of the adapter plate, and the two test meter pen fixing plates are respectively installed in the two second Y-direction waist-shaped holes through second bolts and second nuts.

For the electric cores with different specifications, the distance between the positive pole and the negative pole may be different, and the two test meter pen fixing plates can adjust the distance between the two through the two second Y-direction waist-shaped holes, so that the distance between the two test meter pens can be adjusted.

Further, the X-direction waist-shaped hole is formed along the thickness direction of the battery, and the Y-direction waist-shaped hole is formed along the width direction of the battery.

The first nut and the second nut are both square nuts. The socket head cap screw is fastened from top to bottom, and the square nut at the bottom can prevent the screw bolt from rotating when being locked with the nut, so that the positions of the Y limiting stop bar, the X limiting stop bar and the test meter pen fixing plate can be adjusted without inverting the testing device.

Furthermore, the bottoms of the X-direction waist-shaped hole, the Y-direction waist-shaped hole and the second Y-direction waist-shaped hole are counter bores, and the back of the Z-direction waist-shaped hole is a counter bore. The counter bore at the bottom and the counter bore at the back can enable the nut to be embedded into the kidney-shaped hole, so that the surface of the part is kept smooth and flat.

Preferably, the structure further comprises two reinforcing plates which are vertically arranged on the back of the vertical plate.

The two reinforcing plates can increase the strength of the vertical plate, and the vertical plate is prevented from shaking in the test process to influence the accuracy of the test result.

The utility model has the advantages that:

the positions of the Y-shaped limiting stop strip and the X-shaped limiting stop strip are adjusted by forming the X-shaped waist hole and the Y-shaped waist hole in the middle of the bottom plate, so that the battery cell structure is suitable for the thicknesses and widths of battery cells with different specifications; the height of the push-pull type clamp is adjusted by forming a Z-direction waist-shaped hole in the middle of the vertical plate, so that the height of the push-pull type clamp is adapted to the heights of the battery cores with different specifications; the width, the thickness and the height of the battery cell with different specifications are correspondingly adjusted, and the device has the advantages of high universality, low cost, high testing efficiency, and high consistency and accuracy.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic perspective view (non-testing state) of the battery mounting structure of the present invention;

fig. 3 is a schematic view of the three-dimensional structure of the present invention mounted on a battery (test state);

FIG. 4 is a partial perspective view of FIG. 1;

FIG. 5 is a bottom plan view of the structure of FIG. 4;

FIG. 6 is a schematic bottom plan view of FIG. 1;

FIG. 7 is a schematic view of a back plane structure of a vertical plate;

the reference numbers in the figures are as follows:

1-a base plate 1;1A-X direction waist-shaped hole; 1B-Y direction waist-shaped hole; 2-Y limit stop bars; 3-X limit stop bars; 4-standing the plate; a 41-Z-direction waist-shaped hole; 5-a reinforcing plate; 6-guide rod fixing plate; 7-fixing the test meter pen; 8-a patch panel; 81-second Y-direction kidney-shaped holes; 10-test meter pen; 11-a push-pull clamp; (ii) a 111-cushion blocks; 112-a telescopic rod; 113-a handle assembly; 114-shoulder screws; 115-a handle; 116-a fixation section; 117-a connecting portion; 118-a screw; 119-vertical through hole 12-guide bar; 13-a flange bearing; 14-a first bolt; 15-a first nut; 16-a second bolt; 17-a second nut; 20-electric core; 21-pole.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

The thickness direction of the battery is defined as X direction, the width direction of the battery is defined as Y direction, the height direction of the battery is defined as Z direction, the visible side of the battery is the front side, and the invisible side of the battery is the back side, which is detailed in figure 1.

As shown in fig. 1 to 3, the utility model relates to a battery OCV testing device, the material of the body of which is bakelite plate, the cost is low, the weight is light, and the processing is easy; and the bakelite plate has good insulation property and does not need to be insulated and protected by a testing device. OCV test of the battery (Open Circuit Voltage test). The battery OCV testing device is not only suitable for testing square batteries, but also suitable for testing circular batteries.

The test meter pen fixing plate comprises two test meter pen fixing plates 7 and two test meter pens 10; the test meter pen fixing plate 7 is composed of two parts, a semi-circular arc groove is formed in the center position of a contact surface of the two parts, the test meter pen 10 is placed in the semi-circular arc groove along the Z direction, and each meter pen is fixed by two bolts Y, so that the test meter pen 10 is fixedly connected with the test meter pen fixing plate 07.

The device also comprises a bottom plate 1, a Y-shaped limiting stop bar 2, an X-shaped limiting stop bar 3, a vertical plate 4, two reinforcing plates 5, two guide rod fixing plates 6, an adapter plate 8, a push-pull clamp 11 and two guide rods 12; the two reinforcing plates 5 are vertically arranged on the back of the vertical plate 4, three parallel X-direction waist-shaped holes 1A and three parallel Y-direction waist-shaped holes 1B are formed in the middle of the bottom plate 1, the X-direction waist-shaped holes 1A are arranged along the thickness direction of the battery, the Y-direction waist-shaped holes 1B are arranged along the width direction of the battery, each X-direction waist-shaped hole 1A and each Y-direction waist-shaped hole 1B are perpendicular to each other, the Y-direction limiting stop strip 2 is arranged in the X-direction waist-shaped holes 1A through three first bolts 14 and first nuts 15, and the X-direction limiting stop strip 3 is arranged in the Y-direction waist-shaped holes 1B through three first bolts 14 and first nuts 15; the edges of the Y-position limiting stop bars 2 and the X-position limiting stop bars 3 contacting the battery cell 20 are chamfered, so that the battery cell 20 is prevented from being damaged by the edges.

The vertical plate 4 is vertically arranged on the upper end face of the bottom plate 1, and a Z-direction waist-shaped hole 41 is formed in the middle of the vertical plate 4 along the vertical direction; the guide rod fixing plate 6 is positioned above the bottom plate 1 in parallel, the guide rod fixing plate 6 is vertically installed at the upper end of the vertical plate 4, the adapter plate 8 is positioned between the bottom plate 1 and the guide rod fixing plate 6 in parallel, the two test meter pen fixing plates 7 are installed at the front end of the adapter plate 8, the upper end of the guide rod 12 penetrates out of the guide rod fixing plate 6, and a flange bearing 13 is installed at the upper end of the guide rod fixing plate 6 to provide a limiting and guiding effect for the up-and-down movement of the guide rod 12; the lower end of the guide rod 12 is fixedly connected with the adapter plate 8; the rear end of the push-pull type clamp 11 is arranged in the Z-direction waist-shaped hole 41, and the front end of the push-pull type clamp 11 is fixedly connected with the adapter plate 8.

The upper end means is far away from one end of the bottom plate 1, the lower end means is close to one end of the bottom plate 1, the front end means is far away from one end of the vertical plate 4, and the rear end means is close to one end of the vertical plate 4.

Fig. 2 shows a non-test state, in which the push-pull type clamp 11 is reset upward, and the probe of the test meter pen 10 is not yet in contact with the pole 21 of the battery cell 20.

Fig. 3 shows a test state, in which the push-pull type clamp 11 is closed downward, and the probe of the test meter pen 10 just touches the pole 21 of the battery cell 20.

As shown in fig. 4 to 5, the push-pull clamp 11 comprises a cushion block 111, a telescopic rod 112, a handle assembly 113, a shoulder screw 114, and a screw 118; the tail of the shaft shoulder screw 114 penetrates through the Z-direction waist-shaped hole 41 to be in threaded connection with the back of the cushion block 111, the handle assembly 113 is installed on the front of the cushion block 111, the telescopic rod 112 is installed at the lower end of the handle assembly 113, and the tail of the screw 118 penetrates through the adapter plate 8 to be fixedly connected with the bottom of the telescopic rod 112.

Handle assembly 113 includes handle 115, fixed part 116, connecting portion 117, fixed part 116 and the positive fixed connection of cushion 111, handle 115 one end is articulated with fixed part 116 upper end, and the handle 115 other end is articulated with connecting portion 117 upper end, telescopic link 112 is installed in the vertical through-hole 119 of fixed part 116 and upwards stretches out vertical through-hole 119, and telescopic link 112 upper end is articulated with connecting portion 117 lower extreme.

Two second Y-direction waist-shaped holes 81 with the same central axis are formed in the front end of the adapter plate 8, and the two test meter pen fixing plates 7 are respectively installed in the two second Y-direction waist-shaped holes 81 through three second bolts 16 and second nuts 17.

As shown in fig. 5 to 7, the first nut 15 and the second nut 17 are both square nuts. The bottoms of the X-direction waist-shaped hole 1A, the Y-direction waist-shaped hole 1B and the second Y-direction waist-shaped hole 81 are counter bores, and the back of the Z-direction waist-shaped hole 41 is a counter bore.

The testing process comprises the following steps:

adjusting the positions of a Y-limiting stop bar 2, an X-limiting stop bar 3, a push-pull type clamp 11 and a test meter pen fixing plate 7 according to the specification of the battery cell; handle component 113 receives the decurrent power, drives telescopic link 112 downstream to drive keysets 8 along guide bar 12 downstream, install the test meter pen fixed plate 7 downstream at keysets 8 front end, make the probe of test meter pen 10 just in time contact utmost point post 21 of electric core 20, accomplish test and data automatic recording promptly.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a battery OCV testing arrangement, includes two test meter pen fixed plates (7), two test meter pens (10) are installed respectively along vertical direction on two test meter pen fixed plates (7), its characterized in that: the device also comprises a bottom plate (1), a Y-shaped limiting stop bar (2), an X-shaped limiting stop bar (3), a vertical plate (4), a guide rod fixing plate (6), an adapter plate (8), a push-pull type clamp (11) and a guide rod (12);

the middle of the bottom plate (1) is provided with at least one X-direction waist-shaped hole (1A) and at least one Y-direction waist-shaped hole (1B) which are perpendicular to each other, the Y-direction limiting stop strip (2) is installed in the X-direction waist-shaped hole (1A) through a first bolt (14) and a first nut (15), and the X-direction limiting stop strip (3) is installed in the Y-direction waist-shaped hole (1B) through the first bolt (14) and the first nut (15);

the vertical plate (4) is vertically arranged on the end face of the bottom plate (1), and a Z-direction waist-shaped hole (41) is formed in the vertical plate (4) along the vertical direction; the guide rod fixing plate (6) is parallelly positioned above the bottom plate (1), the guide rod fixing plate (6) is vertically installed at one end, far away from the bottom plate (1), of the vertical plate (4), the adapter plate (8) is parallelly positioned between the bottom plate (1) and the guide rod fixing plate (6), the two test meter pen fixing plates (7) are installed at one ends, far away from the vertical plate (4), of the adapter plate (8), one ends, far away from the bottom plate (1), of the guide rods (12) penetrate through the guide rod fixing plate (6), and one ends, close to the bottom plate (1), of the guide rods (12) are fixedly connected with the adapter plate (8); one end, close to the vertical plate (4), of the push-pull clamp (11) is installed in the Z-direction waist-shaped hole (41), and one end, far away from the vertical plate (4), of the push-pull clamp (11) is fixedly connected with the adapter plate (8).

2. The battery OCV testing device according to claim 1, characterized in that: the push-pull type clamp (11) comprises a cushion block (111), an expansion rod (112), a handle assembly (113), a shaft shoulder screw (114) and a screw (118); the tail of the shaft shoulder screw (114) penetrates through the Z-direction waist-shaped hole (41) to be in threaded connection with the back face of the cushion block (111), the handle assembly (113) is installed on the face, far away from the vertical plate (4), of the cushion block (111), the telescopic rod (112) is installed at one end, close to the bottom plate (1), of the handle assembly (113), and the screw (118) penetrates through the adapter plate (8) to be fixedly connected with the telescopic rod (112).

3. The battery OCV testing device according to claim 2, characterized in that: handle components (113) include handle (115), fixed part (116), connecting portion (117), fixed part (116) with cushion (111) are kept away from riser (4) one side fixed connection, handle (115) are close to cushion (111) one end with fixed part (116) upper end is articulated, handle (115) are kept away from cushion (111) one end with connecting portion (117) are articulated, install telescopic link (112) in vertical through-hole (119) of fixed part (116) and upwards stretch out vertical through-hole (119), telescopic link (112) upwards stretch out the end with connecting portion (117) are kept away from handle (115) one end is articulated.

4. The battery OCV testing device according to any one of claims 1 to 3, wherein: two second Y-direction waist-shaped holes (81) with the same central axis are formed in one end, far away from the vertical plate (4), of the adapter plate (8), and the two test meter pen fixing plates (7) are installed in the two second Y-direction waist-shaped holes (81) through second bolts (16) and second nuts (17) respectively.

5. The battery OCV testing apparatus of claim 4, wherein: the X-direction waist-shaped hole (1A) is formed in the thickness direction of the battery, and the Y-direction waist-shaped hole (1B) is formed in the width direction of the battery.

6. The battery OCV testing device according to claim 5, wherein: the bottoms of the X-direction waist-shaped hole (1A), the Y-direction waist-shaped hole (1B) and the second Y-direction waist-shaped hole (81) are counter bores, and the back of the Z-direction waist-shaped hole (41) is a counter bore.

7. The battery OCV testing device according to claim 6, wherein: the vertical type wall plate is characterized by further comprising two reinforcing plates (5), wherein the two reinforcing plates (5) are vertically arranged on the back of the vertical plate (4).