Disassembling drill bit and electric tool

Abstract

The utility model relates to the technical field of battery piece disassembling, and discloses a disassembling drill bit and an electric tool. The disassembling drill bit is used for being installed on an electric drill to disassemble a battery piece and comprises a drill bit body, the bearing is fixedly mounted on the drill bit through a sleeve and a nut; a groove body is formed in the inner wall of the shell, and the shell is connected with the bearing through a sliding block arranged in the groove body, so that the drill bit slides in the shell when moving towards the disassembling direction; the limiting holes are formed in the disassembling direction, and the opening direction extends from the outer wall of the shell to the interior of the groove body; and the limiting block can be matched with the limiting hole for mounting and is used for limiting the moving position of the sliding block and controlling the grinding depth of the drill bit. Through the cooperation of the limiting block and the limiting hole, the disassembling strength is effectively controlled when the drill bit is used for disassembling the chip, the disassembling technical requirement for personnel in the chip disassembling process is lowered, and the chip disassembling efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery tab disassembly, and in particular to a disassembly drill and electric tool. Background Art

[0002] With the continuous development of new energy technologies, batteries are widely used in photovoltaic energy storage, new energy vehicles, industrial robots and other fields. However, when recycling or maintaining batteries, it is often necessary to disassemble the busbars integrated in the battery. At present, this disassembly work is mostly done by disassembly technicians using diagonal pliers. This method is time-consuming, labor-intensive and inefficient. In addition, since there may be residual electrical energy in the battery, there are certain safety risks when disassembling the busbars integrated with the battery. This makes the disassembly work have high technical requirements for disassembly technicians. Improper operation by personnel can easily cause the battery to spark and other phenomena. When using an electric drill for direct disassembly, due to the high speed of the electric drill and the lack of a support point for the electric drill, it is difficult for the disassembly technician to hold the electric drill, and there are safety hazards in the operation. Utility Model Content

[0003] In view of this, the present application provides a disassembly drill bit and an electric tool in order to solve the technical problem of disassembling the battery integrated busbar. In the first aspect, a disassembly drill bit is provided, which is used to be installed on an electric drill to disassemble the battery busbar, including: a drill bit; a bearing, which is fixedly installed on the drill bit through a sleeve and a nut; a shell, the inner wall of the shell is provided with a groove body, and the bearing is connected to the bearing through a slider arranged in the groove body, so that when the drill bit moves in the disassembly direction, the drill bit slides in the shell; a plurality of limiting holes are arranged along the disassembly direction, and the opening direction extends from the outer wall of the shell into the groove body; a limiting block can be installed in conjunction with the limiting hole, and is used to limit the moving position of the slider and control the grinding depth of the drill bit.

[0004] The above disassembly drill bit cooperates with the limit block and the limit hole, so that the drill bit can effectively control the disassembly force when disassembling the baffle, reduce the disassembly technical requirements of the personnel in the baffle disassembly process, and improve the baffle disassembly efficiency.

[0005] In some implementations, the method further includes:

[0006] The elastic structure is arranged in the slot body, the first end of the elastic structure is linked to the slider, and the second end of the elastic structure is connected to the shell.

[0007] The above disassembled drill bit can provide the drill bit with a force in the opposite direction to the supporting force of the grinding surface through the elastic structure, and the grinding depth can be controlled by the extension or compression of the elastic structure.

[0008] In some implementations, the housing further includes:

[0009] The end cap is arranged at one end of the housing near the drill bit and can be installed in conjunction with the housing. The end cap can provide friction and support for the disassembly drill bit, preventing the disassembly drill bit and the electric drill installed thereon from slipping at the object to be ground, thereby causing operational risks.

[0010] In some implementations, the housing is provided with a fixing structure at an end away from the drill bit that can be cooperatively connected to the electric drill.

[0011] In some implementations, a drill bit includes: a first portion and a second portion;

[0012] The first portion extends from the interior of the housing toward the disassembly direction, and the second portion is disposed inside the housing;

[0013] The diameter of the first part is smaller than the diameter of the second part.

[0014] In some implementations, there are multiple slots distributed on the inner wall of the shell.

[0015] In a second aspect, based on the same technical concept, the present application also provides an electric tool for disassembling battery bars, including: an electric drill, and a disassembly drill bit as provided in the first aspect installed on the electric drill. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following is a brief introduction to the drawings used in describing the embodiments of the present application:

[0017] Figure 1 A structural schematic diagram of a disassembled drill bit provided in an embodiment of the present application is shown.

[0018] Description of the accompanying drawings: 110-drill bit, 120-bearing, 130-sleeve, 140-nut, 150-housing, 151-trough body, 152-slider, 153-fixing structure, 160-limiting hole, 170-limiting block, 180-elastic structure, 190-end cover, F1-grinding direction. DETAILED DESCRIPTION

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the specific implementation methods of the present application will be described below with reference to the accompanying drawings. The accompanying drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other accompanying drawings or embodiments can be obtained based on these accompanying drawings or embodiments without paying creative work. The adjustments and improvements made without departing from the concept of the present application all belong to the protection scope of the present application.

[0020] In order to simplify the drawings, each figure only schematically shows the parts related to the embodiments, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only a part of the components with the same structure or function is schematically drawn, and there may be more or less components with the same structure or function in reality.

[0021] In this application, unless otherwise clearly specified and limited, ordinal numbers, such as "first", "second", etc., are only used to distinguish and describe associated objects, and cannot be understood as indicating or implying the relative importance or order between associated objects; in addition, they do not represent the number of associated objects. "Multiple" includes two or more, and other quantifiers are similar. " / " is used to describe the relationship between associated objects, which indicates the "or" relationship between associated objects. "And / or" is used to describe the relationship between associated objects, which includes any combination relationship between associated objects, such as "a and / or b" includes: "alone a", "alone b", or "a and b". "One or more" or "at least one" in multiple objects refers to any object or any combination of multiple objects, such as "one or more of a1, a2, a3" or "at least one of a1, a2, a3" includes: "alone a1", "alone a2", "alone a3", "a1 and a2", "a1 and a3", "a2 and a3" or "a1, a2 and a3".

[0022] With the continuous development of new energy technology, batteries are widely used in many fields such as photovoltaic energy storage, new energy vehicles and industrial robots. However, when recycling or maintaining batteries, it is often necessary to disassemble the battery module. There is usually an integrated busbar (Cells Contact System, CCS) in the battery module, which is used for the electrical connection structure inside the battery module to connect the battery cells in series and parallel with high voltage to realize the current collection and transmission of the battery cells, and can perform the temperature sampling and cell voltage sampling functions of the battery. On the integrated busbar, the bar sheet is closely connected to the electrode (such as the positive or negative electrode) of the battery as a current collecting belt, which effectively collects the current generated by the battery and transmits it to the external circuit. The material of the bar sheet often needs to consider conductivity and structural strength, such as using aluminum metal or copper metal, and enhancing its structural strength and corrosion resistance through welding, electroplating and other processes. Therefore, the bar sheet can be recycled when the battery module is disassembled, and the structural strength of the bar sheet itself makes it difficult to disassemble. At present, the disassembly work is mostly done by disassembly technicians using diagonal pliers. This method is time-consuming, labor-intensive and inefficient. In addition, since there may be residual electrical energy in the battery, there are certain safety risks when disassembling the busbars of the integrated busbar, which makes the disassembly work have high technical requirements for disassembly technicians. Improper operation by personnel can easily cause the battery to spark, etc. When using an electric drill for direct disassembly, it is difficult for the disassembly technician to hold the drill due to its high speed and lack of support points, and there are safety hazards in the operation.

[0023] Please refer to Figure 1 , which shows a schematic diagram of the structure of a disassembly drill bit provided in an embodiment of the present application. The disassembly drill bit is used to be installed on an electric drill to disassemble battery bars, and includes: a drill bit 110; a bearing 120, which is fixedly installed on the drill bit 110 through a sleeve 130 and a nut 140; a shell 150, the inner wall of the shell 150 is provided with a groove 151, and a slider 152 arranged in the groove 151 is connected to the bearing 120, so that when the drill bit 110 moves in the disassembly direction F1, the drill bit 110 slides in the shell 150; a plurality of limiting holes 160, which are arranged along the disassembly direction F1, and the opening direction extends from the outer wall of the shell 150 to the groove 151; a limiting block 161, which can be installed in conjunction with the limiting hole 160, is used to limit the moving position of the slider 152 and control the grinding depth of the drill bit 110.

[0024] Specifically, the drill bit 110 is perpendicular to the grinding surface of the object to be ground, and the drill bit 110 is driven to rotate by the electric drill, and the disassembly technician holds the electric drill and moves it in the disassembly direction F1. The housing 150 can be in contact with the object to be ground and provide support to prevent the disassembly technician from having difficulty holding the electric drill and causing operational risks. In the process of the disassembly technician holding the electric drill and moving it in the disassembly direction F1, the drill bit 110 slides relative to the housing 150 under the action of the slider 152. For example, when the grinding surface of the object to be ground has not yet reached the grinding depth, the drill bit 110 may be displaced in the opposite direction of the disassembly direction F1. During the grinding process, the drill bit 110 continues to move in the disassembly direction F1 driven by the slider 152 until the preset grinding depth is reached. The preset grinding depth can be achieved by cooperating with the limit hole 160 and the limit block 170. For example, the minimum grinding depth is set to x mm through the limit hole 160, and a limit hole 160 is set every y mm. Therefore, when the limit block 170 is inserted into the limit hole 160, the control switching between the grinding depth (x+(n-1)y) mm can be achieved. For example, when the limit block 170 is inserted into the first limit hole 160, the grinding depth is x mm, and when it is inserted into the second limit hole 160, the grinding depth is (x+y) mm, and so on.

[0025] The front end of the drill bit 110, that is, the end close to the grinding surface of the object to be ground, can adopt a planar structure to grind the surface of the blade. During grinding, the surface of the blade is parallel to the front end surface of the drill bit 110, so that the blade is removed from the integrated busbar through the friction force of the drill bit 110; an inclined structure can also be adopted, such as a triangular structure, to increase the front end pressure of the drill bit 110, quickly destroy the surface shape of the blade, and peel the blade from the welding point of the integrated busbar through the force in the direction of the blade tilting, thereby improving the disassembly efficiency; or a trapezoidal structure can be adopted, which is not specifically limited here and is within the protection scope of this application.

[0026] In some embodiments of the present application, it also includes: an elastic structure 180 disposed in the groove body 151 , a first end of the elastic structure 180 is connected to the slider 152 , and a second end of the elastic structure 180 is connected to the housing 150 .

[0027] The elastic structure 180 can provide support for the drill bit 110 connected to the slider. When the drill bit 110 is in contact with the grinding surface of the object to be ground, it provides a force in the opposite direction of the support force of the grinding surface. When the drill bit 110 grinds the grinding surface and generates a grinding depth, the elastic structure 180 can push the slider 151 to drive the drill bit 110 to move in the grinding direction F1. At the same time, the elastic structure 180 can cooperate with the limiting hole 160 and the limiting block 170. The limiting block 170 can reach the elastic structure 180 through the limiting hole 160, thereby limiting the extension or compression of the elastic structure 180 and achieving the control of the grinding depth. The elastic structure 180 can be set as a spring, so the limiting block 170 can be inserted into the middle of the spring to clamp the spring, thereby achieving the control of the grinding depth. The elastic structure 180 can be set as an elastic sheet. When the limiting block 170 is limited, it passes through the elastic sheet or clamps the elastic sheet to achieve the control of the grinding depth.

[0028] In some embodiments of the present application, the housing 150 further includes an end cap 190, which is disposed at one end of the housing 150 close to the drill bit 110 and can be installed in conjunction with the housing 190. The end cap 190 can use a surface structure with a material having a large friction force, so that when the disassembly drill bit is close to the object to be ground, it provides friction and support force, thereby preventing the disassembly drill bit and the electric drill installed thereon from slipping at the object to be ground, thereby generating operational risks.

[0029] In some embodiments of the present application, the housing 150 is provided with a fixing structure 153 that can be connected with an electric drill at one end away from the drill bit 110. The fixing structure 153 can be configured to be inserted into the drill bit interface of the electric drill, and when inserted, it is stuck with the drill bit interface of the electric drill to prevent the drill bit from being disassembled as a whole from being separated from the electric drill, thereby causing operational risks.

[0030] In some embodiments of the present application, the drill bit 110 includes: a first part and a second part; the first part extends from the inside of the housing toward the disassembly direction, and the second part is disposed inside the housing; wherein the diameter of the first part is smaller than the diameter of the second part. The diameter of the first part is smaller than the diameter of the second part, so that the drill bit 110 can be further firmly mounted inside the housing 150, preventing the drill bit 110 from separating from the housing 150 during rotation, causing damage to parts of the object to be ground other than the target disassembly part (such as the bar), and causing harm to the disassembly operator, thereby improving the reliability and safety of the disassembly drill bit.

[0031] In some implementations, there are multiple slots 151, which are distributed on the inner wall of the housing. The number of slots 151 can be an even number, such as 2, 4, 6, etc., and can be arranged at both ends of the housing diameter, so that the displacement of the drill bit 110 is smoother. The number of slots 151 can also be an odd number, such as 1, 3, 5, etc., and the distance between each slot 151 can be equal or unequal. During the displacement of the drill bit 110, the force is evenly distributed, thereby improving the safety and reliability of the use of the disassembly drill bit.

[0032] Based on the same technical concept, the present application also provides an electric tool for disassembling battery bars, including: an electric drill, and a disassembly drill bit provided in the above embodiment installed on the electric drill.

[0033] It should be noted that the above embodiments can be freely combined as needed. The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application, and these improvements and modifications should also be regarded as the protection scope of the present application.

Claims

1. A disassembly drill bit, characterized in that: Used to be installed on an electric drill to disassemble battery tabs, including: drill; A bearing, fixedly mounted on the drill bit through a sleeve and a nut; A housing, wherein a groove is formed on the inner wall of the housing, and a sliding block arranged in the groove is connected to the bearing, so that when the drill bit moves in the disassembly direction, the drill bit slides in the housing; A plurality of limiting holes are arranged along the disassembly direction, and the opening direction extends from the outer wall of the shell into the slot body; The limiting block can be installed in cooperation with the limiting hole and is used to limit the moving position of the sliding block and control the grinding depth of the drill bit.

2. The disassembly drill bit according to claim 1, characterized in that: Also includes: The elastic structure is arranged in the groove body, the first end of the elastic structure is linked to the slider, and the second end of the elastic structure is connected to the shell.

3. The disassembly drill bit according to claim 2, characterized in that: The housing further comprises: The end cover is arranged at one end of the shell close to the drill bit and can be installed in coordination with the shell.

4. The disassembly drill bit according to any one of claims 1 to 3, characterized in that: The housing is provided with a fixing structure which can be matched and connected with the electric drill at one end away from the drill bit.

5. The disassembly drill bit according to claim 1, characterized in that: The drill bit comprises: a first part and a second part; The first portion extends from the interior of the housing toward the disassembly direction, and the second portion is disposed inside the housing; Wherein, the diameter of the first part is smaller than the diameter of the second part.

6. The disassembly drill bit according to any one of claims 1 to 3 and 5, characterized in that: There are multiple slots distributed on the inner wall of the shell.

7. An electric tool, characterized in that: Used to disassemble the battery bar, including: An electric drill, and a disassembly drill bit as claimed in any one of claims 1 to 6 mounted on the electric drill.

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