Lithium battery test clamp

Abstract

The utility model relates to the technical field of lithium battery testing, and discloses a lithium battery testing clamp which comprises a first clamp rod and a second clamp rod which are hinged, one end of the first clamp rod and one end of the second clamp rod which are close to the hinged position are respectively provided with a handle, and each handle is coated with an insulating layer. The opposite side walls of the other end of the first forceps rod and the other end of the second forceps rod are bent back to back and extend in the first direction to form two arc-shaped clamping parts which are oppositely arranged, the opposite side walls of the two arc-shaped clamping parts are detachably connected with an insulating clamping block, and clamping teeth are arranged on the other side of the insulating clamping block at intervals. The lithium battery transporting device has the advantages that flames sprayed by a lithium battery can be blocked, the injury risk of a user is lowered, the electric shock risk of the user is lowered, the lithium battery is prevented from slipping in the transporting process, and the safety risk is lowered.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery test technical field especially relates to a clamp for lithium battery test. BACKGROUND

[0002] In order to simulate the high risk situation that lithium battery encounters in practical application, the safety performance of lithium battery is evaluated, generally, the high risk test (such as overcharge test, overdischarge test, thermal abuse test, extrusion test, impact test, etc.) is carried out to lithium battery, if lithium battery meets corresponding safety standard under corresponding test condition, then lithium battery meets factory demand.

[0003] In the process of testing lithium battery, lithium battery structure is unstable and easy to break, fire and even explosion, therefore, lithium battery after high risk test needs to be transported to safety box to avoid danger. In prior art, ordinary clamp is usually used to transport tested lithium battery, lithium battery cell thermal runaway during transportation can spray flame, the contact area between existing clamp and lithium battery is small, and the clamp cannot block the flame, which is easy to hurt people. In addition, the clamping end of existing clamp is metal structure, although the handle of clamp is provided with insulation layer, but the main body of clamp can still conduct electricity, and the user can be electrocuted by mistake during transportation, which has high safety risk. Moreover, the clamping end of existing clamp is flat, and lithium battery is easy to slip off during transportation, which has high safety risk. SUMMARY

[0004] The utility model aims at providing a clamp for lithium battery test, which can block the flame sprayed by lithium battery, reduce the risk of user injury, reduce the risk of user electric shock, avoid lithium battery slipping off during transportation, and reduce the safety risk.

[0005] In order to achieve the above purpose, the utility model provides a clamp for lithium battery test, which comprises hinged first clamp rod and second clamp rod, one end of the first clamp rod and the second clamp rod close to the hinge is provided with a handle, and the handle is covered with an insulation layer; the other end of the first clamp rod and the second clamp rod is reversely bent on the opposite side wall and extends in the first direction to form two oppositely arranged arc-shaped clamping parts, and the opposite side wall of the two arc-shaped clamping parts is detachably connected with an insulating clamp block, and the other side of the insulating clamp block is provided with a clamping tooth at intervals.

[0006] Further, the first clamp rod and the second clamp rod are the same in structure, the first clamp rod comprises a clamp body, a clamp arm and a locking piece, one end of the clamp body is provided with the handle, the other end of the clamp body is movably connected with the clamp arm, the other end of the clamp arm is provided with the arc-shaped clamping part, and the locking piece is used to lock and limit the movable connection between the clamp body and the clamp arm.

[0007] Further, the jaw body is provided with a sliding groove towards the jaw arm, the jaw arm is inserted into the sliding groove at one end away from the arc-shaped clamping part, and the side wall of the jaw body is provided with a limiting hole in communication with the sliding groove in the length direction.

[0008] Further, the side wall of the jaw body is provided with a guide groove in communication with the sliding groove in the length direction, and the side wall of the jaw arm is provided with a guide part corresponding to the guide groove.

[0009] Further, the locking part is a spring top bead.

[0010] Further, the side wall of the arc-shaped clamping part is provided with a threaded hole, the insulating clamp block is provided with a counterbore corresponding to the threaded hole, and the counterbore is provided with a screw corresponding to the threaded hole.

[0011] Further, the spacing of the clamping teeth gradually decreases in the direction close to the handle.

[0012] Further, a hinge shaft is connected between the first jaw rod and the second jaw rod, the first jaw rod is provided with a positioning hole in the width direction, the second jaw rod penetrates through the positioning hole, and the positioning hole is used for limiting the second jaw rod in the first direction.

[0013] Further, the arc-shaped clamping part is provided with a narrow end at both ends and a wide middle part in the length direction.

[0014] Further, the insulating clamp block is made of silicone rubber or aluminum silicate fiber cotton.

[0015] Compared with the prior art, the first jaw rod and the second jaw rod have the following beneficial effects: the opposite side walls of the other end of the first jaw rod and the second jaw rod are bent away from each other and extend in the first direction to form two oppositely arranged arc-shaped clamping parts, the opposite side walls of the two arc-shaped clamping parts are detachably connected with an insulating clamp block, and the other side of the insulating clamp block is provided with clamping teeth. By arranging the arc-shaped clamping part, the contact area with the lithium battery during clamping is increased, the sprayed flame is blocked, and the risk of injury to the user is reduced. In addition, the lithium battery is clamped by the insulating clamp block, the first jaw rod and the second jaw rod main part are prevented from conducting electricity, and the risk of electric shock to the user is reduced. In addition, the insulating clamp block is provided with clamping teeth, which further increases the contact area with the lithium battery, avoids the lithium battery from slipping during transportation, and reduces the safety risk. Furthermore, the insulating clamp block is detachably connected with the arc-shaped clamping part, which is convenient for disassembly and assembly. When the clamping teeth of the insulating clamp block are worn out, only the insulating clamp block needs to be replaced, thereby reducing the cost. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1It is a structure schematic view of the clamp for testing lithium battery according to the embodiment of the utility model.

[0017] Figure 2 It is another structure schematic view of the clamp for testing lithium battery according to the embodiment of the utility model.

[0018] Figure 3 It is the parts explosion view of the clamp for testing lithium battery according to the embodiment of the utility model.

[0019] Figure 4 It is a structure schematic view of the first clamp rod of the clamp for testing lithium battery according to the embodiment of the utility model.

[0020] In the figure, 1, first clamp rod;11, clamp body;111, sliding groove;112, limiting hole;113, guide slot;114, positioning hole;12, clamp arm;121, guide part;13, locking piece;2, second clamp rod;3, handle;4, arc clamping part;41, threaded hole;5, insulating clamp block;51, clamp tooth;52, counterbore;6, hinged shaft;X, first direction. DETAILED DESCRIPTION

[0021] The specific embodiments of the utility model will be further described in detail below in combination with the drawings and embodiments. The following embodiments are used to illustrate the utility model, but not to limit the scope of the utility model.

[0022] In the description of the utility model, it should be understood that the positions or location relations indicated by the terms "upper", "lower", "front", "rear", "inner", "outer" and the like in the utility model are based on the position relations shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices and elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.

[0023] In the description of the utility model, it should be understood that the terms "first", "second" and the like are used to describe various information in the utility model, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, "first" information can also be referred to as "second" information without departing from the scope of the utility model, and similarly, "second" information can also be referred to as "first" information.

[0024] As Figures 1 to 4The utility model discloses a kind of clamp for lithium battery test, including hingedly first clamp bar 1 and second clamp bar 2, for facilitating illustration, the height direction of first clamp bar 1 and second clamp bar 2 is defined as first direction X, specifically, one end of first clamp bar 1 and second clamp bar 2 close hinged portion is equipped with handle 3, handle 3 is covered with insulating layer, insulating layer is generally made of rubber and silicone etc., with certain heat insulation effect, and insulation, prevent clamp from scalding user in use process, and prevent user from electric shock.

[0025] Further, in order to increase the contact area when clamping the lithium battery, and block the flame sprayed on the lithium battery, reduce the risk of injury to the user, as shown in Figure 1 As shown, the opposite side walls of the other end of the first clamp bar 1 and the second clamp bar 2 away from the hinged portion are bent back and extend in the first direction X to form two oppositely arranged arc-shaped clamping portions 4. Since the arc-shaped clamping portions 4 are made of metal material, in order to avoid the conduction of the main part of the first clamp bar 1 and the second clamp bar 2, and reduce the risk of electric shock to the user, the opposite side walls of the two arc-shaped clamping portions 4 are detachably connected with insulating clamping blocks 5.

[0026] Further, in order to avoid the lithium battery slipping off when clamping, the other side of the insulating clamping block 5 is provided with a clamping tooth 51, and the side of the insulating clamping block 5 with the clamping tooth 51 is used to contact the lithium battery when clamping, thereby increasing the contact area with the lithium battery and reducing the safety risk. After the clamp is used for a certain period of time, the insulating clamping block 5 is easily worn out due to long time working in high temperature condition. At this time, in order to reduce the cost of replacing the whole clamp, the insulating clamping block 5 is detachably connected with the arc-shaped clamping portion 4, and only the insulating clamping block 5 needs to be replaced, thereby reducing the cost.

[0027] Since the body type and height of different users are different, the length required when using the clamp is different. In order to facilitate the adjustment of the overall length of the clamp to adapt to the use habits of different users, in the present embodiment, the first clamp bar 1 and the second clamp bar 2 are the same in structure. Specifically, the first clamp bar 1 comprises a clamp body 11, a clamp arm 12 and a locking member 13, wherein one end of the clamp body 11 is provided with a handle 3, the other end of the clamp body 11 is movably connected with the clamp arm 12, the other end of the clamp arm 12 is provided with an arc-shaped clamping portion 4, and the locking member 13 is used to lock and limit the movable connection between the clamp body 11 and the clamp arm 12.

[0028] Further, as shown in Figures 2 to 4, in order to facilitate the design of the connecting structure between the clamp body 11 and the clamp arm 12, in this embodiment, the clamp body 11 is provided with a sliding groove 111 towards the clamp arm 12, the clamp arm 12 is inserted into the sliding groove 111 away from the arc-shaped clamping part 4, the side wall of the clamp body 11 is provided with a limiting hole 112 in communication with the sliding groove 111 in the length direction, and the clamp arm 12 is connected with a locking piece 13 corresponding to the limiting hole 112, that is, when the length of the first clamp rod 1 and the second clamp rod 2 is adjusted synchronously, the insertion depth of the clamp arm 12 in the sliding groove 111 is adjusted, and the adjusted position is fixed by the locking piece 13.

[0029] In some embodiments, the locking piece 13 is a spring top bead or a screw. The spring top bead is a standard part and can be directly purchased. Specifically, the spring top bead includes a shell, a spring and a ball. The spring is arranged in the shell, one end of the spring is arranged on the inner wall of the shell, and the other end is arranged with the ball. The spring has a movement tendency to push the ball away from the shell. When the locking piece 13 is a spring top bead, the shell is fixedly connected with the end of the clamp arm 12 away from the arc-shaped clamping part 4. When the length of the first clamp rod 1 and the second clamp rod 2 is adjusted, the spring is compressed by pressing the ball, the clamp arm 12 slides in the sliding groove 111, and after the ball moves to the appropriate limiting hole 112, the spring resets, the clamp arm 12 is fixed with the clamp body 11, and the length adjustment is completed. When the locking piece 13 is a screw, the screw is threadedly connected with the clamp body 11. When the length of the first clamp rod 1 and the second clamp rod 2 is adjusted, the screw is disassembled, the clamp arm 12 is pushed to slide in the sliding groove 111, and after moving to the appropriate length, the screw is fixed with the clamp rod through the corresponding limiting hole 112, so that the clamp arm 12 is fixed with the clamp body 11, and the length adjustment is completed.

[0030] Further, when the length of the first clamp rod 1 and the second clamp rod 2 is adjusted, it is convenient to push the clamp arm 12 to move in the sliding groove 111. One side wall of the clamp body 11 is provided with a guide groove 113 in communication with the sliding groove 111 in the length direction, and the side wall of the clamp arm 12 is provided with a guide part 121 corresponding to the guide groove 113. That is, the guide part 121 is pushed to drive the clamp arm 12 to slide in the sliding groove 111.

[0031] In some embodiments, in order to facilitate the detachable connection between the arc-shaped clamping part 4 and the insulating clamp block 5, refer to Figure 3The side wall of the arc-shaped clamping part 4 is provided with a threaded hole 41, the insulating clamping block 5 is provided with a counterbore 52 corresponding to the threaded hole 41, and a screw corresponding to the threaded hole 41 is arranged in the counterbore 52. In other embodiments, the insulating clamping block 5 can also be directly bonded with the arc-shaped clamping part 4 by using high-temperature-resistant glue, and the insulating clamping block 5 is made of silicone rubber or aluminum silicate fiber cotton, has good high-temperature resistance, and has a certain flexibility, so that the stability during clamping of the lithium battery is improved. Further, since the arc-shaped clamping part 4 is integrally formed with the clamping arm 12, in order to improve the stability of the structure between the arc-shaped clamping part 4 and the clamping arm 12, the arc-shaped clamping part 4 is provided with a narrow end and a wide middle in the length direction, which is beneficial to the smooth transition of the connecting part of the arc-shaped clamping part 4 and the clamping arm 12, and is also beneficial to processing.

[0032] Further, since the first clamping rod 1 and the second clamping rod 2 are hinged, the clamping force is increasing in the direction close to the handle 3, therefore, in order to make the lithium battery bear uniform force during clamping, the spacing of the clamping teeth 51 is gradually reduced in the direction close to the handle 3. Avoiding the lithium battery from being damaged due to excessive local force during clamping, resulting in fire or explosion and other dangerous situations.

[0033] Further, in order to facilitate the hinge connection between the first clamping rod 1 and the second clamping rod 2, the hinge shaft 6 is connected between the first clamping rod 1 and the second clamping rod 2. In order to avoid the first clamping rod 1 and the second clamping rod 2 from moving in the first direction X during clamping of the lithium battery, causing the lithium battery to slip, the first clamping rod 1 is provided with a positioning hole 114 in the width direction, and the second clamping rod 2 penetrates the positioning hole 114, and the positioning hole 114 is used for limiting the second clamping rod 2 in the first direction X.

[0034] The use process of the utility model is: the first clamping rod 1 and the second clamping rod 2 are opened at a certain angle by applying force to the handle 3, so that the lithium battery can be clamped.

[0035] In summary, the utility model discloses a kind of clamp for lithium battery test, the opposite side wall of the other end of first lever 1, second lever 2 is bent back, and two arc clamping parts 4 of oppositely arranged are formed in the first direction X extension, the opposite side wall of two arc clamping parts 4 is detachably connected with insulating clamp block 5, and the other side of insulating clamp block 5 is provided with clamping tooth 51 at interval.By setting arc clamping part 4, the surface area of contact with lithium battery when clamping is increased, the flame of jet can be blocked, and the risk of user injury is reduced.In addition, insulating clamp block 5 is provided to clamp lithium battery, to avoid the conductive of first lever 1, second lever 2 main part, and reduce the risk of user electric shock.In addition, insulating clamp block 5 is provided with clamping tooth 51, further increase the contact area between lithium battery, avoid lithium battery slip in the process of transfer, reduce the risk of safety.And, insulating clamp block 5 and arc clamping part 4 are detachably connected, facilitate disassembly, after the wear of the clamping tooth 51 of insulating clamp block 5, only need to replace insulating clamp block 5, reduce cost.

[0036] The above is only preferred embodiment of the utility model, it should be pointed out, for ordinary skilled person in the art, without departing from the technical principle of the utility model, can make several improvements and replacement, these improvements and replacement also should be considered as the protection scope of the utility model.

Claims

1. A clamp for testing lithium batteries, characterized by: The utility model provides a pincers, including articulated first pincers and second pincers, and the first pincers and the second pincers are provided with handles on one end close to the articulated part, and the handles are covered with an insulating layer, the opposite side walls of the other end of the first pincers and the second pincers are bent away from each other and extend in a first direction to form two oppositely arranged arc-shaped clamping parts, and the arc-shaped clamping parts are detachably connected with insulating clamping blocks, and the other side of the insulating clamping blocks is provided with clamping teeth at intervals.

2. The clamp for testing lithium batteries of claim 1, wherein: The first pincers and the second pincers are structurally identical, the first pincers include a pincers body, a pincers arm and a locking member, one end of the pincers body is provided with the handle, the other end of the pincers body is movably connected with the pincers arm, the other end of the pincers arm is provided with the arc-shaped clamping part, and the locking member is used to lock and limit the pincers body and the pincers arm after being movably connected.

3. The clamp for testing lithium batteries of claim 2, wherein: The pincers body is provided with a sliding groove towards the pincers arm, one end of the pincers arm away from the arc-shaped clamping part is inserted into the sliding groove, and the side wall of the pincers body is provided with a limiting hole in communication with the sliding groove at intervals in the length direction.

4. The clamp for testing lithium batteries of claim 3, wherein: The side wall of the pincers body is provided with a guide groove in communication with the sliding groove in the length direction.

5. The clamp for testing lithium batteries of claim 3, wherein: The locking member is a spring top bead.

6. The clamp for testing lithium batteries of claim 1, wherein: The side wall of the arc-shaped clamping part is provided with a threaded hole, the insulating clamping block is provided with a counterbore corresponding to the threaded hole, and the counterbore is provided with a screw corresponding to the threaded hole.

7. The clamp for testing lithium batteries of claim 3, wherein: The distance between the clamping teeth decreases in sequence in the direction close to the handle.

8. The clamp for testing lithium batteries of claim 1, wherein: The first pincers and the second pincers are connected with an articulated shaft, the first pincers are provided with a positioning hole in the width direction, the second pincers penetrate through the positioning hole, and the positioning hole is used to limit the second pincers in the first direction.

9. The clamp for testing lithium batteries of claim 1, wherein: The arc-shaped clamping part is provided with narrow ends and a wide middle part in the length direction.

10. The clamp for testing lithium batteries of claim 1, wherein: The insulating clamping block is made of silicone rubber or aluminum silicate fiber cotton.

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