Acquisition piece of power battery

Abstract

A collecting piece of a power battery is provided with a collecting section, a first positioning section, a connecting section, a second positioning section and a groove, the collecting section, the first positioning section, the connecting section and the second positioning section are sequentially arranged, first protective lugs are arranged at the two side ends of the first positioning section, second protective lugs are arranged at the two side ends of the second positioning section, and the middle vertical plane of the width of the collecting piece passes through the groove. And at least one part of the groove is arranged on the first positioning section. Due to the fact that the collecting piece is provided with the groove, the containing space can be provided for the soft board sub-strips, on the premise that the bending degree of the first protective lugs is increased, the possibility that the soft board sub-strips are torn can be reduced, and the effects of being firm in fixing, saving cost and simplifying the technology are achieved.

Description

Technical Field

[0001] The utility model relates to a collecting piece, in particular to a collecting piece for a power battery. Background Art

[0002] Since the state of a power battery needs to be monitored during use, some power batteries are provided with an information collection circuit. The information collection circuit is provided with a collecting piece fixed on the power battery. The collecting piece is electrically connected to the main circuit through a flexible board strip. Among them, the flexible board strip is a branch circuit.

[0003] At present, the connection process between the collecting piece and the flexible board strip usually includes four steps: tin plating, soldering, dispensing, and bending the ear. The above process flow has the disadvantages of long production time, high production cost, and complex process.

[0004] However, if the flexible board strip is fixed only by bending the ear, the fixing may not be firm, and the pressure that the connection can withstand is small. If the bending degree of the ear is increased to increase the pressure, it may cause the problem that the connection deforms too much and tears. Summary of the Utility Model

[0005] In order to overcome the disadvantages and deficiencies existing in the prior art, the purpose of the utility model is to design a collecting piece for a power battery, which can be fixed to the flexible board strip only by bending the ear, omitting the tin plating, soldering, and dispensing processes, saving costs, simplifying the process, and having a firm fixation at the same time.

[0006] To achieve the above purpose, the utility model provides a collecting piece for a power battery, which is provided with a collecting section, a first positioning section, a connecting section, and a second positioning section. The collecting section, the first positioning section, the connecting section, and the second positioning section are arranged in sequence. First ears are provided at both ends of the first positioning section, and second ears are provided at both ends of the second positioning section. The collecting piece is further provided with a groove. The mid-plane of the width of the collecting piece passes through the groove, and at least a part of the groove is arranged in the first positioning section.

[0007] Further, at least a part of the groove is arranged in the connecting section. Among them, extending the groove to the connecting section can increase the accommodating space, thereby further reducing the possibility of the flexible board strip tearing.

[0008] Further, the width of the connecting section gradually decreases from the first positioning section to the second positioning section. Among them, widening the width of the connection between the connecting section and the first positioning section can enhance the strength of this position. Even if a part of the groove is arranged at this position, this position is not likely to break.

[0009] Further, the groove is rectangular. Among them, the rectangular groove fits the shape of the flexible board strip and can better accommodate the flexible board strip.

[0010] Furthermore, the four corners of the groove are rounded. Among them, the rounded corners can prevent the corners of the groove from squeezing the soft board strip and causing the soft board strip to break.

[0011] Furthermore, the length of the groove is 5 - 6 mm, and the depth of the groove is 0.05 - 0.07 mm. Among them, when the first ear is bent, the depth dimension of the groove can provide sufficient accommodation space.

[0012] Furthermore, the length and width of the first positioning section are respectively greater than the length and width of the second positioning section, and the length and width of the first ear are respectively greater than the length and width of the second ear. Among them, the positions and sizes of the first ear and the second ear are both matched with the shape of the connecting part of the soft board strip.

[0013] Furthermore, the outer edge of the first ear is provided with serrations. Among them, the serrations in contact with the soft board strip can improve the firmness of fixation.

[0014] After adopting the above technical solution, the beneficial effect of the present utility model is as follows: Since the collecting piece of the present utility model is provided with a groove, it can provide accommodation space for the soft board strip. Therefore, on the premise of increasing the bending degree of the first ear, the possibility of the soft board strip being torn can be reduced, thereby achieving the effects of firm fixation, cost saving, and process simplification. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram before the forming of the collecting piece according to Embodiment 1 of the present utility model;

[0016] Figure 2 is a schematic diagram after the forming of the collecting piece according to Embodiment 1 of the present utility model;

[0017] Figure 3 is a schematic diagram before the forming of the collecting piece according to Embodiment 2 of the present utility model.

[0018] The reference numerals are: 1, collecting section; 2, first positioning section; 20, first ear; 3, connecting section; 4, second positioning section; 40, second ear; 5, groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solution of the present utility model will be further described below through embodiments:

[0020]

Embodiment 1

[0021] The present utility model provides a collecting piece for a power battery, in combination with Figures 1 - 2As shown in the figure, the collection piece is provided with a collection section 1, a first positioning section 2, a connection section 3, a second positioning section 4, and a groove 5. The collection section 1, the first positioning section 2, the connection section 3, and the second positioning section 4 are arranged in sequence. First ear guards 20 are provided at both side ends of the first positioning section 2, and second ear guards 40 are provided at both side ends of the second positioning section 4. The mid-width plane M of the collection piece passes through the groove 5. A part of the groove 5 is provided in the first positioning section 2, and another part of the groove 5 is provided in the connection section 3. The length of the part of the groove 5 provided in the first positioning section 2 is greater than the length of the part of the groove 5 provided in the connection section 3.

[0022] When fixing the collection piece and the flexible board slitting, first place the connection part of the flexible board slitting at the positions corresponding to the first positioning section 2, the connection section 3, and the second positioning section 4 of the collection piece, then align the connection part of the flexible board slitting with the groove 5, and finally bend the two first ear guards 20 and the two second ear guards 40 so that the collection piece and the flexible board slitting are fixed. Among them, a part of the flexible board slitting will be located in the groove 5 after the fixing is completed.

[0023] As a preferred solution, the groove 5 is rectangular, the four corners of the groove 5 are rounded, the length of the groove 5 is 5 - 6 mm, and the depth of the groove 5 is 0.05 - 0.07 mm. In this embodiment, the width of the groove 5 is 1.1 - 1.3 mm. In other embodiments, the groove 5 can also be set to other width ranges. Generally speaking, the wider the width of the flexible board slitting, the wider the groove 5 needs to be set.

[0024] As a preferred solution, the width of the connection section 3 gradually decreases from the first positioning section 2 to the second positioning section 4.

[0025] In this embodiment, the length and width of the first positioning section 2 are respectively greater than the length and width of the second positioning section 4, and the length and width of the first ear guard 20 are respectively greater than the length and width of the second ear guard 40.

[0026] In this embodiment, the outer edges of the first ear guard 20 and the second ear guard 40 are both flat edges. The two first ear guards 20 are arranged axially symmetrically with respect to the mid-width plane M of the collection piece, and the second ear guard 40 is also arranged axially symmetrically with respect to the mid-width plane M of the collection piece.

[0027] In this embodiment, the collection piece is formed of nickel material. Of course, in other embodiments, the collection piece can also be formed of other conductive materials.

[0028] It should be noted that, please continue to refer to Figure 2 , the two side ends of the present utility model refer to the left and right ends in the figure, the length refers to the dimension in the up and down direction in the figure, the width refers to the dimension in the left and right direction in the figure, the depth refers to the dimension perpendicular to the drawing plane, and the outer edge refers to the edge away from the mid-width plane M.

[0029]

Embodiment 2

[0030] As Figure 3 shown, the collection section 1, the connection section 3, the second positioning section 4, and the groove 5 in this embodiment are the same as those in Embodiment 1, and will not be described in detail here. Different from Embodiment 1, in this embodiment, the outer edge of the first ear 20 is provided with sawteeth, and the number of sawteeth of the two first ears 20 is different. Of course, in other embodiments, the number of sawteeth of the two first ears 20 may also be the same. When fixing the collection piece and the soft board slitting, the sawteeth are in contact with the soft board slitting.

Claims

1. A collecting piece for a power battery is provided with a collecting section, a first positioning section, a connecting section and a second positioning section. The collecting section, the first positioning section, the connecting section and the second positioning section are arranged in sequence. First ear guards are provided at both side ends of the first positioning section, and second ear guards are provided at both side ends of the second positioning section. It is characterized in that: The collecting piece is further provided with a groove, the mid-width plane of the collecting piece passes through the groove, and at least a part of the groove is arranged on the first positioning section.

2. The acquisition sheet of the power battery according to claim 1, characterized in that: At least a part of the groove is arranged on the connecting section.

3. The collecting piece of the power battery according to claim 2, characterized in that: The width of the connecting section gradually decreases from the first positioning section to the second positioning section.

4. The collecting piece of the power battery according to claim 1, characterized in that: The groove is rectangular.

5. The collecting piece of the power battery according to claim 4, characterized in that: The four corners of the groove are rounded.

6. The collecting sheet of the power battery according to claim 4, wherein: The length of the groove is 5-6 mm, and the depth of the groove is 0.05-0.07 mm.

7. The collecting piece of the power battery according to claim 1, characterized in that: The length and width of the first positioning section are respectively greater than the length and width of the second positioning section, and the length and width of the first ear are respectively greater than the length and width of the second ear.

8. The collecting piece of the power battery according to claim 1, wherein: The outer edge of the first ear is provided with serrations.

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