Battery cell welding jig

Abstract

The utility model relates to the technical field of battery welding, and particularly discloses a battery cell welding jig, which comprises a bottom plate, a base plate and a base plate, the positioning assembly is arranged on the bottom plate and is used for positioning a battery cell; the welding cushion block is fixedly mounted on the bottom plate; and the clamping assembly is arranged on the bottom plate and is used for fixing the protection plate. According to the battery cell welding jig, in the welding process of a soft package battery cell, under the mutual cooperation of the positioning assembly and the clamping assembly, on one hand, the welded battery cell and a protection plate are clamped and positioned in the welding operation, the situation that the hands of a worker easily touch the battery cell and the protection plate which are directly placed on the bottom plate is prevented, and the welding quality of the battery cell is improved; on the other hand, the battery cell and the protection plate can be clamped and positioned at the same time, so that the clamping of the battery cell and the protection plate is more convenient, and the welding effect of the battery cell can be further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery welding technical field, concretely relates to a kind of electric core welding fixture. BACKGROUND

[0002] Packaging lithium ion battery is favored by people with its high energy density, good cycle life and its manufacturing form diversification and other advantages, and becomes the mainstream of current lithium ion battery, and tab welding is the key process of soft packaging lithium ion battery, and the direct welding quality of lithium ion battery causes important influence to the pass rate, resistance and rate capability thereof, and current tab welding mostly adopts battery protection plate and electric core tab welding, is prone to false welding, welding and misplacement, affects the battery quality and pass rate of soft battery.

[0003] The patent with the publication number CN219746767U is a kind of battery plate welding with fixed jig, including bottom plate, back plate, bottom plate top and back plate bottom connection, back plate and bottom plate between welding pen connecting part, connecting column, welding pad, welding pen connecting part is used to be connected with spot welding machine's positive welding pen or negative welding pen electricity in use corresponding point. The above-mentioned utility model is set through welding pen connecting part, connecting column and welding pad, only need to hold another pole welding pen to carry out corresponding operation when welding, reduce the operation intensity of operator, convenient and fast, and the current of one pole welding pen is conducted to the surface of integrated circuit board, changes current flow direction, reduces energy loss, makes spot welding more accurate, greatly improves the combination firmness of battery and integrated circuit board, the magnet slot and scale line are set, so that the side of battery and integrated circuit board are accurately adjusted on the same scale line, further improve the precision of welding.

[0004] But in the prior art, in the welding of electric core, it is necessary to additionally fix and install corresponding magnet on the electric core, so as to be attracted by the magnet in the magnet slot, resulting in that the installation and fixation of electric core is relatively cumbersome, which affects the welding efficiency.

[0005] Therefore, it is necessary to provide a new technical scheme to overcome the above defects. UTILITY MODEL CONTENT

[0006] The utility model aims at providing a kind of electric core welding fixture that can effectively solve the above technical problems.

[0007] To achieve the purpose of the utility model, the following technical solutions are adopted:

[0008] A kind of electric core welding fixture, comprising: bottom plate;Positioning assembly for electric core positioning is set on the bottom plate;Welding pad is fixedly installed on the bottom plate;And clamping assembly for protection plate fixation is set on the bottom plate;

[0009] The positioning assembly comprises a clamping plate symmetrically slidingly mounted on the bottom plate, a hinged rod hingedly mounted with the clamping plate, a movable plate hingedly mounted between the two hinged rods, a movable rod driving the movable plate to move, and a first spring sleeved on the movable rod.

[0010] Further, one end of the first spring is fixedly connected to the surface of one end of the movable rod, and the other end of the first spring is fixedly connected with the side wall of the bottom plate.

[0011] Further, the other end of the movable rod is sleeved with a guide sleeve, and the top of the guide sleeve is fixedly connected with the bottom of the bottom plate.

[0012] Further, the clamping assembly comprises a stop block, a moving rod driving the stop block to move, a positioning sleeve sleeved on the moving rod and fixedly mounted on the bottom of the bottom plate, and a second spring sleeved on the moving rod, one end of the second spring being fixedly mounted on the moving rod, and the other end of the second spring being fixedly mounted on the surface of the positioning sleeve.

[0013] Further, the axis of the moving rod is on the same horizontal line as the axis of the movable rod.

[0014] Compared with the prior art, the utility model has the beneficial effects that: in the welding of the soft package battery cell, through the cooperation of the positioning assembly and the clamping assembly, on the one hand, the clamping and positioning of the welded cell and the protection plate during the welding operation are realized, the cell and the protection plate directly placed on the bottom plate are prevented from being easily touched by the hands of the workers, the inclination of the cell and the protection plate is prevented, and the welding quality of the cell tab is affected, on the other hand, the clamping and positioning of the cell and the protection plate are realized at the same time, the clamping of the cell and the protection plate is more convenient, and the welding effect of the cell is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, are used to explain the utility model together with embodiments of the utility model, and do not constitute the limitation to the utility model.

[0016] Fig. 1 It is the front view schematic diagram of the utility model;

[0017] Fig. 2 It is the front view sectional view schematic diagram of the utility model;

[0018] Fig. 3 It is the bottom view schematic diagram of the utility model.

[0019] In the figure: 1, bottom plate; 101, welding pad; 2, positioning assembly; 201, clamping plate; 202, articulated rod; 203, movable plate; 204, movable rod; 205, first spring; 3, clamping assembly; 301, stop block; 302, moving rod; 303, positioning sleeve; 304, second spring. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the utility model embodiment more clear, the following will combine the technical scheme in the utility model embodiment to make clear, complete description, obviously, the described embodiment is part of the utility model, rather than all the embodiments.

[0021] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "transverse", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the protection scope of the utility model. When a component is referred to as "fixed to" another component, it can be directly on the other component or there can be a middle component. When a component is referred to as "connected to" another component, it can be directly connected to the other component or there can be a middle component. When a component is referred to as "provided on" another component, it can be directly provided on the other component or there can be a middle component. The terms "vertical", "horizontal", "left", "right" and the like used in this paper are only for illustrative purposes.

[0022] As Figs. 1 to 3 shown, the utility model discloses a kind of electric core welding jigs, comprising: bottom plate 1;Positioning assembly 2 for the positioning of electric core is arranged on bottom plate 1;Welding pad 101 is fixedly installed on bottom plate 1;And clamping assembly 3 for protecting plate fixation is arranged on bottom plate 1;

[0023] Positioning assembly 2 includes: clamping plate 201 is symmetrically slidably installed on bottom plate 1, the surface of bottom plate 1 is symmetrically provided with sliding slot, and the both ends of clamping plate 201 are slidably installed in corresponding sliding slot by sliding block;Articulated rod 202 is hingedly installed with clamping plate 201;Movable plate 203 is hingedly installed between two articulated rods 202;Movable rod 204 moves movable plate 203;First spring 205 is sleeved on movable rod 204.

[0024] In the soft package battery cell welding, first push the movable rod 204 one end, make the movable rod 204 one end close to the bottom plate 1, make the movable plate 203 fixed on the movable rod 204 move, at this time the symmetrical hinged lever 202 on the movable plate 203 hinged drives the hinged clamping plate 201 to move, two symmetrical clamping plates 201 move oppositely at the same time, then place the battery cell on the bottom plate 1, loosen the movable rod 204, when the first spring 205 is stressed, the elastic reset makes the movable plate 203 on the movable rod 204 drive the corresponding hinged lever 202 to deflect, at this time the hinged lever 202 pulls the corresponding clamping plate 201 to close to the battery cell, automatically complete the clamping and positioning of the battery cell, on the one hand, avoid the battery cell to be placed directly on the bottom plate 1 to weld, in the welding operation, the hands of the staff are easy to touch the battery cell placed on the bottom, cause the battery cell to be skewed, thereby affect the quality of the battery cell tab welding, on the other hand, make the clamping of the battery cell more convenient, can further improve the welding effect of the battery cell.

[0025] It should be noted here that one end of the first spring 205 is fixedly connected to the surface of one end of the movable rod 204, and the other end of the first spring 205 is fixedly connected with the side wall of the bottom plate 1; when the pressing on one end of the movable rod 204 is released, the first spring 205 is stressed and elastically resets to push the movable rod 204 to move, make the movable plate 203 fixed on the surface of the movable rod 204 move, thereby drive the hinged hinged lever 202 to deflect, realize the automatic clamping and positioning of the clamping plate 201 to the battery cell.

[0026] It should be noted here that the other end of the movable rod 204 is sleeved with a guide sleeve, and the top of the guide sleeve is fixedly connected with the bottom of the bottom plate 1; through the guide sleeve setting, improve the stability of the movable rod 204 when moving.

[0027] In the process of clamping and welding the battery cell, in order to facilitate the stable welding of the protection plate connected with the battery cell tab, prevent the occurrence of virtual welding problem;

[0028] The clamping assembly 3 comprises: a resisting block 301; a moving rod 302 for moving the resisting block 301; a positioning sleeve 303 sleeved on the moving rod 302, and the top of the positioning sleeve 303 is fixedly installed on the bottom of the bottom plate 1; a second spring 304 sleeved on the moving rod 302, and one end of the second spring 304 is fixedly installed on the moving rod 302, and the other end of the second spring 304 is fixedly installed on the surface of the positioning sleeve 303.

[0029] When the movable rod 302 is pushed to move, the other end of the movable rod 204 is pressed on the lower end of the fixed movable rod 302 of the stop block 301, so that the movable rod 302 drives the stop block 301 to move away from the welding pad 101. At this time, the protective plate can be placed in the gap between the welding pad 101 and the stop block 301. When the movable rod 204 is released, the other end of the movable rod 204 is released from the pressing on the movable rod 302, so that the second spring 304 is forced to elastically reset, drives the movable rod 302 to move, and the stop block 301 clamps the protective plate between the welding pad 101 and the stop block 301, thereby completing the fixation of the protective plate. On the one hand, the movable rod 204 can be pushed to conveniently place the battery cell and the protective plate at the same time. On the other hand, the battery cell and the protective plate can be clamped and positioned, thereby improving the welding quality of the battery cell and reducing the problem of virtual welding of the battery cell tab and the battery protection plate.

[0030] It should be noted that the axis of the movable rod 302 and the axis of the movable rod 204 are on the same horizontal line. When the movable rod 204 is pushed to move, the other end of the movable rod 204 can stably press on the surface of one end of the movable rod 302, so as to drive the stop block 301 to move.

[0031] Working principle: in the welding of the soft package battery cell, first, one end of the movable rod 204 is pushed to make the movable rod 204 close to the bottom plate 1, so that the movable plate 203 fixed on the movable rod 204 moves. At this time, the symmetrical hinged rods 202 hinged on the movable plate 203 drive the hinged clamping plates 201 to move. The two symmetrical clamping plates 201 move in opposite directions. Then, the battery cell is placed on the bottom plate 1. When the movable rod 204 is released, the first spring 205 is forced to elastically reset, so that the movable plate 203 on the movable rod 204 drives the corresponding hinged rod 202 to deflect. At this time, the hinged rod 202 pulls the corresponding clamping plate 201 to move close to the battery cell, thereby automatically clamping and positioning the battery cell. When the movable rod 204 is pushed to move, the other end of the movable rod 204 is pressed on the lower end of the fixed movable rod 302 of the stop block 301, so that the movable rod 302 drives the stop block 301 to move away from the welding pad 101. At this time, the protective plate can be placed in the gap between the welding pad 101 and the stop block 301. When the movable rod 204 is released, the other end of the movable rod 204 is released from the pressing on the movable rod 302, so that the second spring 304 is forced to elastically reset, drives the movable rod 302 to move, and the stop block 301 clamps the protective plate between the welding pad 101 and the stop block 301, thereby completing the fixation of the protective plate. On the one hand, the movable rod 204 can be pushed to conveniently place the battery cell and the protective plate at the same time. On the other hand, the battery cell and the protective plate can be clamped and positioned, thereby improving the welding quality of the battery cell and reducing the problem of virtual welding of the battery cell tab and the battery protection plate.

[0032] The standard parts used in the utility model can be purchased from the market, the special-shaped parts can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolt, rivet and welding in the prior art, the machinery, parts and equipment adopt the conventional type in the prior art, the conventional connection mode is adopted in the circuit connection in the prior art, and the details are not described herein, and the contents not described in detail in the description belong to the prior art known to the person skilled in the art.

[0033] It should be understood that the above description can be improved or changed by those skilled in the art, and all these improvements and changes shall belong to the protection scope of the appended claims of the utility model.

Claims

1. An electrode cell welding jig, characterized by, Include: The bottom plate; Positioning assembly for positioning the electric core on the bottom plate; Welding block fixedly installed on the bottom plate; And clamping assembly for fixing the protection plate on the bottom plate; The positioning assembly comprises: a clamping plate symmetrically slidingly installed on the bottom plate; a hinged rod hingedly installed with the clamping plate; a movable plate hingedly installed between the two hinged rods; a movable rod for moving the movable plate; and a first spring sleeved on the movable rod.

2. The cell welding fixture of claim 1, wherein, One end of the first spring is fixedly connected to the surface of one end of the movable rod, and the other end of the first spring is fixedly connected with the side wall of the bottom plate.

3. The cell welding fixture of claim 2, wherein, The other end of the movable rod is sleeved with a guide sleeve, and the top of the guide sleeve is fixedly connected with the bottom of the bottom plate.

4. The cell welding fixture of claim 1, wherein, The clamping assembly comprises: a stop block; a moving rod for moving the stop block; a positioning sleeve sleeved on the moving rod, and the top of the positioning sleeve is fixedly installed on the bottom of the bottom plate; a second spring sleeved on the moving rod, and one end of the second spring is fixedly installed on the moving rod, and the other end of the second spring is fixedly installed on the surface of the positioning sleeve.

5. The cell welding fixture of claim 4, wherein, The axis of the moving rod is on the same horizontal line as the axis of the movable rod.

Images