Automatic aging and capacity grading device for square aluminum shell lithium ion battery

Abstract

The device comprises a supporting seat and a rotary table arranged on the supporting seat, a driving part for driving the rotary table to rotate is arranged below the rotary table, a first supporting frame and a second supporting frame are arranged on the two sides of the rotary table respectively, a rail groove is formed in the table top of the rotary table, and a heating bin is slidably arranged on the rail groove and fixedly arranged on the first supporting frame; a conductive assembly is arranged on the second supporting frame, a plurality of supporting pieces for clamping battery pieces are arranged on the surface of the rotary table in the circumferential direction, a rotating rod is arranged below the supporting pieces, a rotating assembly for driving the supporting pieces to rotate is arranged below the rotating rod, and a pushing assembly is arranged at the lower end of the rotating rod; the pushing assembly is used for pushing the battery piece to abut against the conductive assembly. The whole production cycle of the battery is shortened through high-temperature aging of the battery piece in the heating bin, then charging and discharging testing is conducted, the qualified battery is screened out, the use efficiency of the battery is improved, the service life of the battery is prolonged, and losses and risks caused by poor battery performance are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of battery manufacturing, in particular to an automatic aging and capacity separation device for square aluminum shell lithium ion batteries. Background Art

[0002] After a lithium-ion battery pack is manufactured, it undergoes initial pre-activation and stabilization, the final steps of formation, aging, and capacity grading. After formation, the battery voltage is unstable, slightly higher than the actual voltage. Aging is designed to make the voltage more accurate and stable. Capacity grading involves charging and discharging the battery, and measuring the discharge capacity at full charge to determine the capacity of the lithium-ion battery pack.

[0003] A utility model application with application publication number CN222913829 U discloses a battery aging device, comprising: a box having an aging area inside; a push-pull device comprising a battery holder and a movable holder, the movable holder switching between a first position and a second position; a drive device comprising a drive mechanism and a timer, the drive mechanism being used to drive the movable holder to switch between the first position and the second position, the timer being used to control the drive mechanism to start after a preset time has been reached, so as to switch the movable holder from the first position to the second position.

[0004] However, the inventors found that manually twisting screws to clamp the battery cells on the bracket consumes a lot of manpower and has extremely low production efficiency. Based on this, we proposed an automatic aging and capacity separation device for square aluminum shell lithium-ion batteries. Summary of the Invention

[0005] The purpose of the present invention is to address the shortcomings of the existing technology. By arranging a heating chamber and a conductive component on both sides of the turntable, the battery components are driven to rotate and heat in the heating chamber by the rotating component, so that the battery components are aged at high temperature, the entire production cycle of the battery is shortened, and the battery performance is made more stable by accelerating the chemical reaction; the positive and negative poles on the battery components are brought into contact with the positive and negative electrode sheets on the conductive component through the pushing component for charging, and the electrical properties of multiple electrode sheets are controlled in the control room according to the performance of the battery components, and charge and discharge tests are carried out to screen out qualified batteries, improve the battery utilization efficiency and life, and reduce the losses and risks caused by poor battery performance.

[0006] A square aluminum shell lithium-ion battery automatic aging and capacity separation device comprises a support seat and a turntable arranged on the support seat, a driving member for driving the turntable to rotate is provided under the turntable, a first support frame and a second support frame are respectively provided on both sides of the turntable, a track groove is provided on the turntable surface, a heating chamber is slidably provided on the track groove and the heating chamber is fixedly provided on the first support frame, a conductive component is provided on the second support frame, a plurality of support members for clamping battery components are provided on the turntable surface along the circumferential direction, a rotating rod is provided under the support member, a rotating component for driving the support member to rotate is provided under the rotating rod, and a pushing component is provided at the lower end of the rotating rod, and the pushing component is used to push the battery component to abut against the conductive component.

[0007] Preferably, the conductive assembly includes an arc-shaped support arranged on the second support frame, a control chamber arranged above the arc-shaped support, and a plurality of sections of positive electrode sheets and negative electrode sheets spliced ​​together and arranged below the arc-shaped support.

[0008] As a preference, the rotating assembly includes a gear arranged at the lower end of the rotating rod and a ring gear arranged outside the gear and meshing with the gear.

[0009] As a preference, the pushing assembly includes a return spring arranged on the rotating rod and a guide rail arranged below the rotating rod.

[0010] As a preference, the gear ring and the guide rail are both fixedly arranged on the support seat.

[0011] As a preference, a revolving door is provided at the inlet and outlet of the heating chamber.

[0012] As a preference, the guide rail includes a parallel section, an ascending section and a pushing section.

[0013] As another preferred embodiment, the lower end of the support member is square, and the upper end surface of the pushing section is provided with an arc groove.

[0014] Beneficial effects of the present invention:

[0015] The present invention provides a heating chamber on one side of the turntable, which is slidably arranged on the turntable. When the battery components are driven to rotate by the rotating assembly, they rotate and are heated in the heating chamber, which promotes high-temperature aging of the battery components, shortens the entire production cycle of the battery, and makes the battery performance more stable by accelerating the chemical reaction.

[0016] The present invention provides a conductive component on the other side of the turntable, and uses a pushing component to bring the positive and negative poles on the battery component into contact with the positive and negative electrode sheets on the conductive component for charging. The control room controls the electrical properties of multiple electrode sheets according to the performance of the battery component, performs charge and discharge tests, screens out qualified batteries, improves the battery's usage efficiency and life, and reduces losses and risks caused by poor battery performance.

[0017] In summary, the equipment has the advantages of short production cycle and stable battery performance, and is particularly suitable for the field of battery manufacturing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of the axonometric structure of an automatic aging and capacity separation device for square aluminum shell lithium-ion batteries;

[0020] Figure 2 This is a schematic diagram of the axonometric structure of an automatic aging and capacity separation device for square aluminum shell lithium-ion batteries;

[0021] Figure 3 This is a schematic diagram of the axonometric structure of the heating chamber;

[0022] Figure 4 is an axonometric structural diagram of a conductive component;

[0023] Figure 5 is an axonometric structural diagram of a conductive component;

[0024] Figure 6 This is a schematic diagram of the axonometric structure of the push assembly;

[0025] Figure 7 Schematic diagram of the axonometric structure of the guide rail;

[0026] In the figure: 1-support base; 2-turntable; 3-driving member; 4-first support frame; 5-second support frame; 6-track groove; 7-heating chamber; 8-conductive component; 9-battery component; 10-support member; 11-rotating rod; 12-rotating component; 13-pushing component; 71-rotating door; 81-arc support; 82-control room; 83-positive electrode sheet; 84-negative electrode sheet; 121-gear; 122-gear ring; 131-reset spring; 132-guide rail; 1321-parallel section; 1322-rising section; 1323-pushing section; 1324-arc groove. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0028] like Figures 1 to 7 As shown, a square aluminum shell lithium ion battery automatic aging and capacity separation device comprises a support base 1 and a turntable 2 arranged on the support base 1, a driving member 3 is provided under the turntable 2 to drive the turntable 2 to rotate, a first support frame 4 and a second support frame 5 are respectively provided on both sides of the turntable 2, a track groove 6 is provided on the table top of the turntable 2, a heating chamber 7 is slidably provided on the track groove 6 and the heating chamber 7 is fixedly provided on the first support frame 4, and a conductive component 8 is provided on the second support frame 5, a plurality of support members 10 for clamping the battery component 9 are provided on the table top of the turntable 2 in the circumferential direction, a rotating rod 11 is provided under the support member 10, a rotating component 12 for driving the support member 10 to rotate is provided under the rotating rod 11, and a pushing component 13 is provided at the lower end of the rotating rod 11, and the pushing component 13 is used to push the battery component 9 to abut against the conductive component 8; in the present invention, a hot air pipe is passed through the heating chamber 7 to keep the temperature and humidity in the heating chamber 7 balanced.

[0029] It is worth mentioning here that Figures 4 and 5 As shown, the conductive component 8 includes an arc-shaped support 81 arranged on the second support frame 5, a control room 82 arranged above the arc-shaped support 81, and a positive electrode sheet 83 and a negative electrode sheet 84 arranged below the arc-shaped support 81. In the present invention, by arranging a plurality of sections of electrode sheets on the arc-shaped support 81, the control room 82 can control the number of electrode sheets energized according to the performance of the battery component 9, thereby controlling the charging amount of the battery component 9.

[0030] In addition, if Figure 6 As shown, the rotating assembly 12 includes a gear 121 arranged at the lower end of the rotating rod 11 and a ring gear 122 arranged on the outside of the gear 121 and meshed with the gear 121; the present invention drives the rotating rod 11 to rotate by rotating the turntable 2, and meshes with the fixed ring gear 122 through the gear 121, and drives the rotating rod 11 to rotate by rotating the gear 121.

[0031] Further, such as Figure 6As shown, the pushing assembly 13 includes a return spring 131 arranged on the rotating rod 11 and a guide rail 132 arranged below the rotating rod 11; the gear ring 122 and the guide rail 132 are both fixedly arranged on the support seat 1; the present invention pushes the rotating rod 11 upward through the pushing section 1323 on the guide rail 132, pushing the battery component 9 to abut against the positive and negative electrode sheets for charging.

[0032] It is worth mentioning here that Figure 7 As shown, the guide rail 132 includes a parallel section 1321, an ascending section 1322 and a pushing section 1323; the lower end of the support member 10 is square, and the upper end surface of the pushing section 1323 is provided with an arc groove 1324; in the present invention, when the rotating rod 11 passes through the ascending section 1322, the gear 121 and the ring gear 122 are misaligned, and the square at the lower end of the rotating rod 11 can automatically switch direction when entering the arc groove, and the contact points at the left and right ends of the battery component 9 correspond to the positive and negative electrode sheets.

[0033] In this embodiment, if Figure 3 As shown, a rotating door 71 is provided at the inlet and outlet of the heating chamber 7 ; in the present invention, the rotating door 71 is a prior art and can be automatically closed, thereby slowing down the loss of heat inside the heating chamber 7 .

[0034] The working process is as follows:

[0035] First, the battery component 9 is placed on the support component 10 manually or by a robot. The motor is started to drive the turntable 2 to rotate, which drives the rotating rod 11 to rotate. The gear 121 is engaged with the ring gear 122, which drives the gear 121 and the rotating rod 11 to rotate, and then drives the support component 10 and the battery component 9 to rotate.

[0036] Under the action of the guide rail 132, the rotating rod 11 squeezes the return spring 131 and automatically switches direction in the arc groove 1324. The contact points at the left and right ends of the battery component 9 correspond to the positive and negative electrode sheets. The control chamber 82 controls the charging amount of the battery component 9 by opening the number of positive electrode sheets 83 and negative electrode sheets 84.

[0037] In the description of the present invention, it should be understood that the terms "front and back", "left and right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the equipment or components referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the invention.

[0038] Of course, in this technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0039] The above description in conjunction with the accompanying drawings is only a preferred embodiment of the present invention, but the present invention is not limited to the above embodiment. It should be pointed out that for those skilled in the art, various modifications and improvements can be made without departing from the structure of the present invention. These should also be regarded as the scope of protection of the present invention and will not affect the effect and practicality of the implementation of the present invention.

Claims

1. A square aluminum shell lithium ion battery automatic aging capacity separation device, comprising a support base (1) and a turntable (2) arranged on the support base (1), characterized in that: A driving member (3) for driving the turntable (2) to rotate is provided below the turntable (2), a first support frame (4) and a second support frame (5) are provided on both sides of the turntable (2), a track groove (6) is provided on the table top of the turntable (2), a heating chamber (7) is slidably provided on the track groove (6), and the heating chamber (7) is fixedly provided on the first support frame (4), a conductive component (8) is provided on the second support frame (5), a plurality of support members (10) for clamping the battery member (9) are provided on the table top of the turntable (2) along the circumferential direction, a rotating rod (11) is provided below the support member (10), a rotating component (12) for driving the support member (10) to rotate is provided below the rotating rod (11), a pushing component (13) is provided at the lower end of the rotating rod (11), and the pushing component (13) is used to push the battery member (9) to abut against the conductive component (8).

2. The automatic aging and capacity separation device for square aluminum shell lithium-ion batteries according to claim 1, characterized in that: The conductive assembly (8) comprises an arc-shaped support (81) arranged on the second support frame (5), a control chamber (82) arranged above the arc-shaped support (81), and a plurality of spliced ​​positive electrode sheets (83) and negative electrode sheets (84) arranged below the arc-shaped support (81).

3. The automatic aging and capacity separation device for square aluminum shell lithium-ion batteries according to claim 1, characterized in that: The rotating assembly (12) comprises a gear (121) arranged at the lower end of the rotating rod (11) and a gear ring (122) arranged outside the gear (121) and meshing with the gear (121).

4. The automatic aging and capacity separation device for square aluminum shell lithium-ion batteries according to claim 3, characterized in that: The pushing assembly (13) comprises a return spring (131) arranged on the rotating rod (11) and a guide rail (132) arranged below the rotating rod (11).

5. The automatic aging and capacity separation device for square aluminum shell lithium-ion batteries according to claim 4, characterized in that: The gear ring (122) and the guide rail (132) are both fixedly arranged on the support seat (1).

6. The automatic aging and capacity separation device for square aluminum shell lithium-ion batteries according to claim 4, characterized in that: The guide rail (132) comprises a parallel section (1321), an ascending section (1322) and a pushing section (1323).

7. The automatic aging and capacity separation device for square aluminum shell lithium-ion batteries according to claim 1, characterized in that: The lower end of the support member (10) is square, and the upper end surface of the pushing section (1323) is provided with an arc-shaped groove (1324).

8. The automatic aging and capacity separation device for square aluminum shell lithium-ion batteries according to claim 1, characterized in that: A rotating door (71) is provided at the inlet and outlet of the heating chamber (7).

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