Center positioning structure of battery cell pole piece

Abstract

The utility model discloses a center positioning structure of a battery cell pole piece. The center positioning structure comprises a positioning seat, a sliding piece and a positioning piece, symmetrical elastic pieces are arranged on the two sides of the positioning piece, first teeth are arranged at the lower end of the positioning piece, and second teeth are arranged on the positioning base. When the positioning piece is pressed, the positioning piece is kept sliding in the mounting groove, the elastic piece is compressed under stress, and the first teeth and the second teeth are kept meshed and positioned. According to the battery cell pole piece center positioning structure, the elastic piece is deformed in a pressing mode, the positioning piece is kept to be in contact with the second teeth under stress, the sliding piece is positioned, the size of a positioning area is changed, and therefore the battery cell pole piece is conveniently placed. And the size of the positioning area can be changed by pushing the sliding piece, so that the battery cell pole pieces with different sizes can be placed. Adjustment is convenient, the implementation mode is simple, and the production cost can be effectively controlled.

Description

Technical Field

[0001] The utility model relates to battery manufacturing technology, in particular to a battery core pole piece center positioning structure. Background Art

[0002] In the manufacturing process of energy density batteries, a stacking machine is usually used to fold the positive and negative electrodes and the diaphragm into a Z shape to form a bare battery cell. However, before stacking the battery cells, it is necessary to adjust the overhang of the positive and negative electrodes (referring to the part of the negative electrode that is longer and wider than the positive electrode). When adjusting the position of the stacked battery cell electrode, the existing stacking machine has technical problems such as inaccurate position adjustment or even failure to complete the position adjustment due to the thinness of the stacked battery cell electrode, the electrode corner warping and the inability to fix the position of the stacked battery cell electrode. The current positioning mechanism clamps or loosens the electrode placed on the electrode placement plate under the drive of the driving mechanism, and uses the spring force in four directions to push the electrode to gather toward the center through the cylinder retraction. The elastic clamping of the spring can easily cause the edge of the electrode to be squeezed and damaged, and the push plate is used in a single rotating bearing at the lower end of the positioning baffle mounting seat, so that the positioning baffle mounting seat is stressed, and the synchronous guide drive effect is poor. At the same time, many parts are used, and the capital investment is large. Utility Model Content

[0003] In order to solve the defects of the above-mentioned prior art, the utility model proposes a battery cell pole piece center positioning structure.

[0004] The technical solution of the utility model is achieved in this way:

[0005] A battery cell pole piece center positioning structure, characterized by comprising:

[0006] A positioning seat, wherein a positioning area is formed in the middle of the positioning seat, and a symmetrical first side plate is provided on the positioning seat, and a sliding groove is provided on the first side plate.

[0007] A sliding member installed on the positioning seat, wherein both ends of the sliding member are provided with sliding parts that cooperate with the sliding groove, and a mounting groove is formed in the middle of the sliding member.

[0008] and a positioning member arranged in the mounting groove, wherein symmetrical elastic members are arranged on both sides of the positioning member, a first tooth is arranged at the lower end of the positioning member, and a second tooth is arranged on the positioning seat,

[0009] When the positioning piece is pressed, the positioning piece is kept sliding in the installation groove, and the elastic piece is compressed to keep the first tooth and the second tooth meshing and positioning.

[0010] In the battery cell pole piece center positioning structure of the utility model, positioning plates are respectively provided on the sliding member and the positioning seat.

[0011] In the battery cell pole piece center positioning structure of the utility model, the positioning member is composed of a pressing portion and a positioning portion, the width of the pressing portion is greater than the width of the positioning portion, and the width of the pressing portion matches the width of the mounting groove.

[0012] In the battery cell pole piece center positioning structure of the utility model, a circular groove is provided on the positioning part, an opening is provided at one end of the circular groove, and a through hole connected to the circular groove is provided on the side of the positioning part, and the height of the through hole is smaller than the diameter of the circular groove.

[0013] In the battery cell pole piece center positioning structure of the utility model, the elastic part is composed of a rotating section, an elastic section, a first connecting section, a second connecting section and a third connecting section. The elastic section is arranged in an arc shape. A deformation area is formed between the rotating section and the first connecting section. The first connecting section, the second connecting section and the third connecting section are arranged in parallel and in contact.

[0014] In the battery cell pole piece center positioning structure of the utility model, the first connecting section is connected to one end of the second connecting section through the first arc portion, and the third connecting section is connected to the other end of the second connecting section through the second arc portion.

[0015] In the battery cell pole piece center positioning structure of the utility model, symmetrical planes are provided on the rotating section, and the distance between the planes matches the height of the through opening.

[0016] In the battery core pole piece center positioning structure of the utility model, a ball head is provided at one end of the rotating section.

[0017] In the battery cell pole piece center positioning structure of the utility model, a limiting section is further provided on the third connecting section, a third arc portion is provided between the limiting section and the third connecting section, and a pressing area is formed in the middle of the third arc portion.

[0018] In the battery cell pole piece center positioning structure of the utility model, a symmetrical fixing opening is provided on the inner wall of the mounting groove, a first mounting hole is provided at one end of the fixing opening, and a second mounting hole is provided at the other end, the limiting section is arranged in the first mounting hole, the second connecting section and the third connecting section are arranged in the second mounting hole, and the length of the fixing opening is smaller than the distance between the limiting section and the second arc-shaped portion.

[0019] The implementation of the battery cell pole piece center positioning structure of the utility model has the following beneficial effects: the battery cell pole piece center positioning structure realizes deformation of the elastic member by pressing, keeps the positioning member under force and in contact with the second tooth, realizes positioning of the sliding member, realizes change of the size of the positioning area, and thus facilitates the placement of the battery cell pole piece. Pushing the sliding member can change the size of the positioning area, so that it can adapt to the placement of battery cell pole pieces of different sizes. Not only is it convenient to adjust, but the implementation method is simple, and the production cost can be effectively controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the center positioning structure of the battery cell pole piece of the utility model;

[0021] Figure 2 for Figure 1 A top view of

[0022] Figure 3 for Figure 2 The cross-sectional view at AA in FIG.

[0023] Figure 4 for Figure 3 A local enlarged view of point B in FIG.

[0024] Figure 5 It is an exploded view of the structure of the sliding member, the positioning member and the elastic member in the utility model;

[0025] Figure 6 for Figure 5 A cross-sectional perspective view of the sliding member structure in FIG.

[0026] Figure 7 for Figure 5 Schematic diagram of the positioning member structure;

[0027] Figure 8 for Figure 7 Schematic diagram of some structures;

[0028] Fig. 9 for Figure 5 Schematic diagram of the elastic part structure. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0030] like Figures 1 to 9 As shown, the battery cell pole piece center positioning structure of the utility model includes a positioning seat 1, a sliding member 2 and a positioning member 3. The sliding member 2 is installed on the positioning seat 1, and the positioning member 3 is installed in the middle of the sliding member 2 to cooperate with the elastic member 4 to fix the sliding member 2 on the positioning seat 1, thereby limiting the position and size of the battery cell pole piece.

[0031] A positioning area 5 is formed in the middle of the positioning seat 1, and a symmetrical first side plate 6 is provided on the positioning seat 1, and a slide groove 7 is provided on the first side plate 6. A second side plate 8 is also provided on the positioning seat 1, and the second side plate 8 is vertically arranged with the first side plate 6, and the second side plate 8 has only one place, and one end corresponding to the second side plate 8 is in an open state, so as to facilitate the sliding of the sliding member 2. A positioning plate 9 is provided on the second side plate 8.

[0032] The sliding member 2 is mounted on the positioning seat 1, and the sliding member 2 and the positioning seat 1 are respectively provided with positioning plates 9. Both ends of the sliding member 2 are provided with sliding parts 10 that cooperate with the slide groove 7, and a mounting groove 11 is formed in the middle of the sliding member 2, and the mounting groove 11 runs through from top to bottom.

[0033] The positioning member 3 is arranged in the installation groove 11, and symmetrical elastic members 4 are provided on both sides of the positioning member 3. The lower end of the positioning member 3 is provided with a first tooth 12, and the positioning seat 1 is provided with a second tooth 13. When the first tooth 12 is engaged with the second tooth 13, the position of the sliding member 2 can be kept limited, thereby determining the size of the positioning area 5.

[0034] When the positioning member 3 is pressed, the positioning member 3 is kept sliding in the installation groove 11 , and the elastic member 4 is compressed to keep the first teeth 12 and the second teeth 13 meshed and positioned.

[0035] The positioning member 3 is composed of a pressing portion 14 and a positioning portion 15. The width of the pressing portion 14 is greater than that of the positioning portion 15, and the width of the pressing portion 14 matches the width of the mounting groove 11. The pressing portion 14 can limit the position of the positioning member 3 by the width of the mounting groove 11, so that it can move up and down smoothly.

[0036] The positioning portion 15 is provided with a circular groove 16 , one end of which is provided with a notch 17 , and a through opening 18 communicating with the circular groove 16 is provided on the side of the positioning portion 15 , the height of the through opening 18 being smaller than the diameter of the circular groove 16 .

[0037] The elastic member 4 is composed of a rotating section 19, an elastic section 20, a first connecting section 21, a second connecting section 22 and a third connecting section 23. The elastic section 20 is arranged in an arc shape. A deformation region 24 is formed between the rotating section 19 and the first connecting section 21. The first connecting section 21, the second connecting section 22 and the third connecting section 23 are arranged in parallel and in contact. The first connecting section 21 is connected to one end of the second connecting section 22 through a first arc portion 25, and the third connecting section 23 is connected to the other end of the second connecting section 22 through a second arc portion 26.

[0038] Symmetrical planes 27 are provided on the rotating section 19, and the distance between the planes 27 matches the height of the through opening 18. This allows the rotating section 19 to be installed in the circular groove 16 through the through opening 18, and also allows the rotating section 19 to rotate in the circular groove 16 without being separated from the circular groove 16 during the rotation.

[0039] A ball head 28 is provided at one end of the rotating section 19 , and the ball head 28 can limit the rotating section 19 from sliding out of the circular groove 16 .

[0040] The third connecting section 23 is also provided with a limiting section 29 , a third arc portion 30 is provided between the limiting section 29 and the third connecting section 23 , and a pressing area 31 is formed in the middle of the third arc portion 30 . The width of the pressing area 31 is greater than the length of the first mounting hole 32 .

[0041] A symmetrical fixing opening 33 is provided on the inner wall of the mounting groove 11, a first mounting hole 32 is provided at one end of the fixing opening 33, and a second mounting hole 34 is provided at the other end, the limiting section 29 is arranged in the first mounting hole 32, the second connecting section 22 and the third connecting section 23 are arranged in the second mounting hole 34, and the length of the fixing opening 33 is less than the distance between the limiting section 29 and the second arc-shaped portion 26.

[0042] When installing the elastic member 4, first press the third arc portion 30 to shrink the pressing area 31, so that the limiting section 29 can be kept moving into the pressing area 31, and then the second connecting section 22 and the third connecting section 23 are inserted into the second mounting hole 34, and then the limiting section 29 is inserted into the first mounting hole 32.

[0043] like Figure 4 As shown, when the positioning member 3 is pressed toward the lower end, the rotating section 19 is pushed toward the inner wall of the mounting groove 11, thereby reducing the deformation area 24. When the inclined elastic section 20 changes from an inclined state to a horizontal state, the deformation area 24 is at the minimum compression. Then, when the positioning member 3 exceeds the height of the fixing opening 33, the positioning member 3 is pushed downward by the elastic section 20, causing the first tooth 12 and the second tooth 13 to engage with each other under force, thereby realizing the position limitation of the sliding member 2.

[0044] When the positioning member 3 is pulled upward, the positioning member 3 can be pushed upward by the same elastic force.

[0045] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery cell pole piece center positioning structure, characterized in that: include: A positioning seat, wherein a positioning area is formed in the middle of the positioning seat, and a symmetrical first side plate is provided on the positioning seat, and a sliding groove is provided on the first side plate. A sliding member installed on the positioning seat, wherein both ends of the sliding member are provided with sliding parts that cooperate with the sliding groove, and a mounting groove is formed in the middle of the sliding member. and a positioning member arranged in the mounting groove, wherein symmetrical elastic members are arranged on both sides of the positioning member, a first tooth is arranged at the lower end of the positioning member, and a second tooth is arranged on the positioning seat, When the positioning piece is pressed, the positioning piece is kept sliding in the installation groove, and the elastic piece is compressed to keep the first tooth and the second tooth meshing and positioning.

2. The battery cell pole piece center positioning structure according to claim 1, characterized in that: The sliding member and the positioning seat are respectively provided with positioning plates.

3. The battery cell pole piece center positioning structure according to claim 1, characterized in that: The positioning member is composed of a pressing portion and a positioning portion. The width of the pressing portion is greater than the width of the positioning portion, and the width of the pressing portion matches the width of the mounting groove.

4. The battery cell pole piece center positioning structure according to claim 3, characterized in that: The positioning part is provided with a circular groove, one end of the circular groove is provided with an opening, and the side surface of the positioning part is provided with a through hole connected with the circular groove, and the height of the through hole is smaller than the diameter of the circular groove.

5. The battery cell pole piece center positioning structure according to claim 4, characterized in that: The elastic member is composed of a rotating section, an elastic section, a first connecting section, a second connecting section and a third connecting section. The elastic section is arranged in an arc shape. A deformation area is formed between the rotating section and the first connecting section. The first connecting section, the second connecting section and the third connecting section are arranged in parallel and in contact.

6. The battery cell pole piece center positioning structure according to claim 5, characterized in that: The first connecting section is connected to one end of the second connecting section through a first arc portion, and the third connecting section is connected to the other end of the second connecting section through a second arc portion.

7. The battery cell pole piece center positioning structure according to claim 6, characterized in that: The rotating section is provided with symmetrical planes, and the distance between the planes matches the height of the through opening.

8. The battery cell pole piece center positioning structure according to claim 7, characterized in that: A ball head is provided at one end of the rotating section.

9. The battery cell pole piece center positioning structure according to claim 8, characterized in that: The third connecting section is also provided with a limiting section, a third arc portion is provided between the limiting section and the third connecting section, and a pressing area is formed in the middle of the third arc portion.

10. The battery cell pole piece center positioning structure according to claim 9, characterized in that: A symmetrical fixing opening is provided on the inner wall of the mounting groove, a first mounting hole is provided at one end of the fixing opening, and a second mounting hole is provided at the other end, the limiting section is arranged in the first mounting hole, the second connecting section and the third connecting section are arranged in the second mounting hole, and the length of the fixing opening is less than the distance between the limiting section and the second arc-shaped portion.

Images