CN216958184U

CN216958184U - Pressure formation adjustable lug pressing block mechanism

Info

Publication number: CN216958184U
Application number: CN202220588735.0U
Authority: CN
Inventors: 余建军; 翟所德
Original assignee: Guangdong Dongtang Intelligent Technology Co ltd
Current assignee: Guangdong Dongtang Intelligent Technology Co ltd
Priority date: 2022-03-16
Filing date: 2022-03-16
Publication date: 2022-07-12
Anticipated expiration: 2032-03-16

Abstract

The utility model belongs to the technical field of formation and clamping of polymer soft package lithium ion batteries, and particularly relates to a pressure formation adjustable tab pressing mechanism which comprises a laminated board, an adjusting cushion block and a floating pressing piece; the laminated board is provided with an adjusting chute and a battery pressing position, the floating pressing piece is arranged in the adjusting chute in a sliding manner, and a locking piece is arranged on the floating pressing piece and used for fixing the floating pressing piece in the adjusting chute; one side of the floating pressing piece close to the battery pressing position and the end part of the adjusting sliding groove form an installation position, and the adjusting cushion block is arranged in the installation position in a replaceable mode, so that the adjusting cushion block fills the installation position. When the laminated board compresses the battery, the battery body part is prevented from sinking into the adjusting sliding groove, and then the problems of battery deformation, indentation and damage are avoided.

Description

Pressure formation adjustable lug pressing block mechanism

Technical Field

The utility model belongs to the technical field of formation and clamping of polymer soft package lithium ion batteries, and particularly relates to a pressure formation adjustable lug pressing block mechanism.

Background

The polar aprotic solvent, which is a lithium ion battery during the first charge and discharge of the lithium ion battery, inevitably reacts on the electrode and the electrolyte surface to form a passivation film, called an electronic insulating film or a solid electrolyte film, i.e., an SEI film, covering the surface of the electrode. The formation of the SEI film has a crucial effect on the performance of the electrode material. On one hand, the formation of the SEI film consumes part of lithium ions, so that the irreversible capacity of the first charge and discharge is increased, and the charge and discharge efficiency of the electrode material is reduced; on the other hand, the SEI film has organic solvent insolubility and can stably exist in an organic electrolyte solution, and solvent molecules cannot pass through the passivation film, so that male insertion of the solvent molecules can be effectively prevented, damage to an electrode material due to co-insertion of the solvent molecules is avoided, and the cycle performance and the service life of the electrode are greatly improved. The quality of the formed SEI film determines the quality of the SEI film, and directly influences the electrochemical properties of the battery, such as cycle life, stability, self-discharge property, safety and the like. The formation of the battery requires long-time charging and discharging, and not only the voltage or current of the charging and discharging needs to be accurately controlled, but also the pulse waveform of the charging and discharging voltage and current needs to be accurately controlled during charging, so as to prevent the SEI film impedance from increasing, thereby influencing the multiplying power discharging performance of the lithium ion battery and improving the production efficiency of the formation process. The higher the control accuracy of voltage and current, the better the quality of lithium battery products.

The existing pressure formation equipment can only produce products with single models or similar models, has multiple overall dimensions and models, and is difficult to deal with initial production and experiments. If the models of the new products are incompatible, new equipment needs to be customized, the manufacturing cost is high, the production time is slow, the equipment capacity is low, the cost is wasted, and the production field is occupied. At present, in order to solve the problem, the pressing block and the conductive block of the tab are usually arranged in an adjustable structure, for example, an adjusting sliding groove is arranged on a laminated board, the pressing block of the tab is arranged in the adjusting sliding groove in a sliding manner, and the position of the pressing block is adjusted and fixed through adjusting pieces such as an adjusting screw rod, so that the formation of batteries with different types is met. However, after the pressing block is adjusted in the adjusting chute, a certain gap exists in the adjusting chute; when the battery is pressed against the laminate sheet, a portion of the battery is pressed into the void, causing problems of deformation and even breakage of the battery.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a pressure formation adjustable lug pressing block mechanism, which solves the problem that in order to meet the formation requirements of polymer flexible package lithium batteries of different types and sizes, an adjusting sliding groove needs to be arranged on a laminated plate, and a main body part of a pilot battery can be pressed into the sliding groove.

In order to achieve the purpose, the pressing block mechanism for pressing into the adjustable tab provided by the embodiment of the utility model comprises a laminated board, an adjusting cushion block and a floating pressing piece; the laminated board is provided with an adjusting sliding groove and a battery pressing position, the floating pressing piece is arranged in the adjusting sliding groove in a sliding mode, and a locking piece is arranged on the floating pressing piece and used for fixing the floating pressing piece in the adjusting sliding groove; one side of the floating pressing piece close to the battery pressing position and the end part of the adjusting sliding groove form an installation position, and the adjusting cushion block is arranged in the installation position in a replaceable mode, so that the adjusting cushion block fills the installation position.

Furthermore, a guide piece is arranged in the adjusting sliding groove, and the floating pressing piece is connected with the guide piece in a sliding mode.

Furthermore, the floating pressing piece comprises a sliding block and a floating pressing block, the sliding block is connected in the adjusting sliding groove in a sliding mode, and the floating pressing block is arranged on the outer side of the sliding block; the locking piece locks the sliding block.

Further, the floating pressing block comprises a compression spring, a limiting piece and a pressing block; the sliding block is provided with a cavity, the limiting part is arranged at the opening part of the cavity, the compression spring is arranged in the cavity, the pressing block penetrates through the limiting part and extends into the cavity, and a limiting step which is limited at the edge of the limiting part is arranged on the side surface of the pressing block; the compression spring extrudes the limiting step to limit the limiting part.

Further, the outer surface of the pressing block is also provided with a conductive plate.

Further, both sides of the slider are provided with the floating pressing blocks.

Furthermore, two guide rods are arranged in the adjusting sliding chute and pass through the sliding block in a sliding manner; the adjusting cushion block comprises two detachable cushion blocks, and the cushion blocks are provided with clearance grooves for the guide rods.

Further, the locking member is disposed on the top of the laminate, and elastic clamping walls are extended downward from both sides of the locking member to clamp both sides of the slider.

Furthermore, two sides of the locking piece are provided with guide inclined planes which extend from the top to the bottom end of the elastic clamping wall and are used for guiding the lugs of the battery.

One or more technical schemes in the pressure formation adjustable lug pressing block mechanism provided by the embodiment of the utility model at least have the following technical effects:

when the floating pressing piece needs to be adjusted, the locking piece can be loosened, or the locking force of the locking piece is overcome, the floating pressing piece is moved and adjusted, so that when the floating pressing piece is adjusted to a proper position, the floating pressing piece is locked in the adjusting sliding groove through the locking piece, and then a proper adjusting cushion block is arranged in an installation position formed by the adjusting floating pressing piece and the adjusting sliding groove, so that the installation position is completely filled with the adjusting cushion block, and no gap exists in the installation position; therefore, when the laminated board presses the battery, the battery body part is prevented from sinking into the adjusting sliding groove, and the problems of deformation, indentation and damage of the battery are further avoided.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a structural diagram of a pressing mechanism for pressing an adjustable tab according to an embodiment of the present invention.

Fig. 2 is a structural diagram of a floating pressing member of a pressing mechanism for pressing adjustable tabs according to an embodiment of the present invention.

Fig. 3 is an exploded view of a floating pressing member of a press-forming adjustable tab pressing mechanism according to an embodiment of the present invention.

Fig. 4 is a structural diagram of a locking member of a pressure forming adjustable tab pressing mechanism according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the embodiments of the present invention, and should not be construed as limiting the utility model.

In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

In one embodiment of the present invention, referring to fig. 1 to 3, a press-forming adjustable tab pressing mechanism includes a laminate 100, an adjusting spacer 200, and a floating pressing member 300. The laminated board 100 is provided with an adjusting sliding groove 101 and a battery pressing position 102, the floating pressing member 300 is slidably disposed in the adjusting sliding groove 101, and the floating pressing member 300 is provided with a locking member 400 for fixing the floating pressing member 300 in the adjusting sliding groove 101. The side of the floating pressing member 300 close to the battery pressing position 102 and the end of the adjusting chute 101 form an installation position, and the adjusting pad 200 is replaceably disposed in the installation position, so that the adjusting pad 200 fills the installation position. When the position of the floating pressing piece 300 needs to be adjusted, the retaining piece 400 can be loosened, or the locking force of the retaining piece 400 is overcome, the floating pressing piece 300 is moved and adjusted, so that when the floating pressing piece 300 is adjusted to a proper position, the floating pressing piece is locked in the adjusting chute 101 through the retaining piece 400, and then the proper adjusting cushion block 200 is arranged in an installation position formed by the adjusting floating pressing piece 300 and the adjusting chute 101, so that the installation position is completely filled with the adjusting cushion 200, and no gap exists in the installation position; therefore, when the laminate sheet 100 presses the battery, the battery body portion is prevented from being caught in the regulating groove 101, thereby preventing the problems of deformation, indentation, and breakage of the battery.

Further, referring to fig. 1 to 3, a guide member is disposed in the adjusting chute 101, and the floating pressing member 300 is slidably connected to the guide member. The guide member supports the spacing floating compressing member 300 when the floating compressing member 300 compresses the tab by connecting and spacing the floating compressing member 300.

Further, referring to fig. 1 and 4, the floating pressing member 300 includes a sliding block 310 and a floating pressing block 320, the sliding block 310 is slidably connected in the adjusting chute 101, and the floating pressing block 320 is disposed outside the sliding block 310; the locker 400 locks the slider 310. The position of the slider 310 only needs to be adjusted when adjusting the floating pressure block 320.

Further, referring to fig. 1 to 3, the floating pressing block 320 includes a compression spring 321, a limiting member 322, and a pressing block 323. The sliding block 310 is provided with a concave cavity 311, the limiting member 322 is arranged at the mouth of the concave cavity 311, the compression spring 321 is arranged in the concave cavity 311, the pressing block 323 penetrates through the limiting member 322 and extends into the concave cavity 311, and the side surface of the pressing block 323 is provided with a limiting step which is limited at the edge of the limiting member 322. The compression spring 321 presses the limiting step to limit the limiting member 322. In this embodiment, when the tab is pressed, the compression spring 321 is compressed, and the pressing block 323 presses the tab by the reaction force of the compression spring 321.

Further, referring to fig. 1 to 3, a conductive plate 324 is further disposed on an outer surface of the pressing block 323 for tab formation and electrical connection.

Further, referring to fig. 1 to 3, the floating pressing block 320 is disposed on both sides of the sliding block 310. In this embodiment, the floating compacts 320 located at both sides of the laminate sheet 100 may be adjusted simultaneously by the slider 310.

Further, referring to fig. 1 to 3, two guide rods 103 are disposed in the adjusting chute 101, and the two guide rods 103 slidably pass through the sliding block 101. The adjusting cushion block 200 comprises two detachable cushion blocks, and the cushion blocks are provided with clearance grooves for avoiding the guide rods 103. In the present embodiment, when adjusting the position of the slider 310, the slider 310 slides on the guide rod 103, and the slider 310 is supported by the guide rod 103. In addition, the adjusting cushion block 200 is composed of two identical cushion blocks, when the adjusting cushion block is replaced, the two cushion blocks are detached, so that the adjusting cushion block is convenient to replace, and the two cushion blocks can be combined into a whole through the fastening structures such as magnets.

Further, referring to fig. 1 and 4, the locker 400 is disposed at the top of the laminate 100, and elastic clamping walls 401 are extended downward at both sides of the locker 400 for clamping at both sides of the slider 310. In this embodiment, the fixed slider 310 is held in the adjustment chute 101 by the elastic holding wall 401.

Further, referring to fig. 4, both sides of the locker 400 are provided with guide slopes 402 extending from the top to the bottom ends of the elastic clamping walls 401 for guiding the tabs of the batteries. In this embodiment, when the battery is inserted between two adjacent laminate plates 100, the tab of the battery is guided by the guide slope 402, so that the tab of the battery is conveniently introduced into the pressing block 323.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A briquetting mechanism for pressure formation adjustable lugs is characterized by comprising a laminated board, an adjusting cushion block and a floating pressing piece; the laminated board is provided with an adjusting sliding groove and a battery pressing position, the floating pressing piece is arranged in the adjusting sliding groove in a sliding mode, and a locking piece is arranged on the floating pressing piece and used for fixing the floating pressing piece in the adjusting sliding groove; one side of the floating pressing piece close to the battery pressing position and the end part of the adjusting sliding groove form an installation position, and the adjusting cushion block is arranged in the installation position in a replaceable mode, so that the adjusting cushion block fills the installation position.

2. The pressforming adjustable tab pressing mechanism of claim 1, wherein: and a guide piece is arranged in the adjusting sliding groove, and the floating pressing piece is in sliding connection with the guide piece.

3. The pressforming adjustable tab pressing mechanism of claim 1, wherein: the floating pressing piece comprises a sliding block and a floating pressing block, the sliding block is connected in the adjusting sliding groove in a sliding mode, and the floating pressing block is arranged on the outer side of the sliding block; the locking piece locks the sliding block.

4. The pressforming adjustable tab pressing mechanism of claim 3, wherein: the floating pressing block comprises a compression spring, a limiting piece and a pressing block; the sliding block is provided with a cavity, the limiting part is arranged at the opening part of the cavity, the compression spring is arranged in the cavity, the pressing block penetrates through the limiting part and extends into the cavity, and a limiting step which is limited at the edge of the limiting part is arranged on the side surface of the pressing block; the compression spring extrudes the limiting step to limit the limiting part.

5. The pressforming adjustable tab pressing mechanism of claim 4, wherein: and the outer surface of the pressing block is also provided with a conductive plate.

6. The pressure forming adjustable tab pressing mechanism according to any one of claims 3 to 5, characterized in that: the two sides of the sliding block are provided with the floating pressing blocks.

7. The pressure formation adjustable tab pressing mechanism of claim 6, wherein: two guide rods are arranged in the adjusting sliding chute and penetrate through the sliding block in a sliding manner; the adjusting cushion block comprises two detachable cushion blocks, and the cushion blocks are provided with clearance grooves for the guide rods.

8. The pressure formation adjustable tab pressing mechanism of claim 6, wherein: the locking piece is arranged at the top of the laminated board, and elastic clamping walls extend downwards from two sides of the locking piece and are used for clamping two sides of the sliding block.

9. The pressforming adjustable tab pressing mechanism of claim 8, wherein: and guide inclined planes extending from the top to the bottom end of the elastic clamping wall are arranged on two sides of the locking piece and used for guiding the lugs of the battery.