A cell connection system

Abstract

The utility model discloses a kind of electric core connecting systems, it is related to electric power equipment technical field, wire harness placing groove is set along length extension direction on support, main wire harness can be placed in wire harness placing groove;Several wire harness limit blocks are set at intervals on support, two adjacent wire harness limit blocks are respectively located at the both sides of wire harness placing groove, lateral top block of wire harness limit block is towards another side wall and is pressed, main wire harness forms alternating bending distribution in wire harness placing groove, and main wire harness is separated from wire harness placing groove along depth direction by limiting pressure block blocking;The structure does not need to adopt ribbon and other additional accessories to constrain main wire harness, directly through wire harness limit block and put main wire harness, and main wire harness forms zigzag extension, wire harness is not easy to displace relative to wire harness placing groove, and the stability of main wire harness is higher.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, and more specifically to a battery cell connection system. Background Technology

[0002] CCS (Cells Contact System) is a key component in a battery module responsible for the electrical connection between cells. It mainly consists of signal acquisition components (FPC (Flexible Printed Circuit), PCB (Printed Circuit Board), FFC (Flat Flexible Cable), etc.), plastic structural parts, copper and aluminum busbars, etc., which are connected into a whole through processes such as hot pressing or riveting to realize high-voltage series and parallel connection of cells, as well as battery temperature sampling and cell voltage sampling functions. The temperature and voltage are provided to the BMS (Battery Management System) system through the FPC / PCB and connector components.

[0003] In existing CCS (Computer-Assisted Signal Processing) products, signal acquisition harnesses require cable ties for fixation. Tying these ties is time-consuming, and tightening them can create stress that pulls on the harness. Furthermore, multiple nickel plates in the finished CCS harness need to be mounted on aluminum plates. Using cable ties to fix the harness prevents stress release, and manually tying the ties is time-consuming, labor-intensive, and inefficient. This stress issue is particularly pronounced in longer CCS designs. Utility Model Content

[0004] The core of this utility model is to provide a battery cell connection system that can form an S-shaped bending constraint distribution on the main wire harness, achieving installation constraint on the wire harness without the need for bundling, resulting in higher installation efficiency. The specific solution is as follows:

[0005] A cell connection system, comprising:

[0006] A bracket extends along the arrangement direction of the battery cells; the bracket is provided with a wire harness placement slot for placing the wire harness, and the wire harness placement slot extends along the length direction of the bracket.

[0007] The bracket is provided with a number of wire harness limiting blocks at intervals, and two adjacent wire harness limiting blocks are respectively located on both sides of the wire harness placement groove;

[0008] The wire harness limiting block includes a lateral top block and a limiting pressure block; the lateral top block is used to push the main wire harness against the opposite side wall of the wire harness placement slot, so that the main wire harness forms alternating bends; the limiting pressure block is a cantilever, used to prevent the main wire harness from leaving the wire harness placement slot along the depth direction, and a gap is left between the limiting pressure block and the opposite side wall of the wire harness placement slot for the main wire harness to be picked up and put in.

[0009] Optionally, the bottom surface of the wire harness placement slot is provided with a plurality of reinforcing grooves, and the arrangement direction of the reinforcing grooves extends along the length direction of the bracket.

[0010] Optionally, a plurality of friction columns are provided in the reinforcing groove, and the friction columns protrude from the bottom surface of the reinforcing groove.

[0011] Optionally, the connection point between the acquisition line and the main wire harness is located between the friction columns.

[0012] Optionally, a wire-passing groove is provided on the side wall of the wire harness placement slot.

[0013] Optionally, a locking block for holding the acquisition line is provided in the wire guide groove.

[0014] Optionally, the length of the lateral top block is 7-9mm, and the spacing between the wire harness limiting blocks is 110-115mm.

[0015] Optionally, a plurality of conductive bar mounting slots are arranged on the side of the wire harness placement slot, and the arrangement direction of the conductive bar mounting slots extends along the length direction of the bracket.

[0016] Optionally, a positioning post is provided in the conductive busbar mounting groove, and the positioning post is used to position and place the conductive busbar.

[0017] Optionally, the bracket is formed by a vacuum forming process.

[0018] This invention provides a battery cell connection system. A wire harness placement groove is provided on a bracket along its length extension direction, and the main wire harness can be placed in the wire harness placement groove. Several wire harness limiting blocks are arranged at intervals on the bracket. Two adjacent wire harness limiting blocks are located on opposite sides of the wire harness placement groove. The lateral top block of the wire harness limiting block pushes the main wire harness against the opposite side wall. The main wire harness forms an alternating bending distribution in the wire harness placement groove, and the limiting pressure block prevents the main wire harness from leaving the wire harness placement groove along the depth direction. This structure does not require additional accessories such as cable ties to constrain the main wire harness. The main wire harness is directly placed by the wire harness limiting blocks, and the main wire harness forms a tortuous extension, making it less likely to displace relative to the wire harness placement groove, thus improving the stability of the main wire harness. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1A This is an isometric view of the support structure of the battery cell connection system of this utility model;

[0021] Figure 1B This is a front view of the bracket structure of the battery cell connection system of this utility model;

[0022] Figure 1C for Figure 1A A magnified view of part A within the dashed box;

[0023] Figure 2A Axonometric drawing of the main wiring harness and conductor busbar mounted on the bracket;

[0024] Figure 2B A front view showing the main wiring harness and conductor busbar mounted on the bracket;

[0025] Figure 2C for Figure 2A A magnified view of part B within the dashed box;

[0026] Figure 3A Axonometric view of the main wire harness structure;

[0027] Figure 3B The front view of the main wire harness structure;

[0028] Figure 4A A structural diagram of a busbar;

[0029] Figure 4B This is another structural diagram of a conductive busbar.

[0030] The image includes:

[0031] 10 bracket, 110 wire harness placement groove, 111 reinforcing groove, 112 friction post, 113 wire passage groove, 1131 locking block, 120 wire harness limiting block, 121 lateral top block, 122 limiting pressure block, 130 conductive busbar mounting groove, 131 positioning post;

[0032] Main harness 20, acquisition line 201, conductive busbar 30, positioning hole 301. Detailed Implementation

[0033] To enable those skilled in the art to better understand the technical solution of this utility model, the battery cell connection system of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. The directional limitations used in this utility model are described based on the directions shown in the accompanying drawings, and are not required to be used only in the directions shown in the drawings.

[0034] This utility model provides a cell connection system for connecting cells in an array, combined with... Figure 1A , Figure 2A As shown, the battery cell connection system of this utility model includes a bracket 10, which extends along the arrangement direction of the battery cells and is combined with... Figure 1B As shown, the length of the bracket 10 extends along the Y-axis, and several battery cells are arranged and distributed along the Y-axis.

[0035] The bracket 10 is provided with a wire harness placement slot 110 for placing wire harnesses, and the wire harness placement slot 110 extends along the length direction of the bracket 10; combined with Figure 1B As shown, the wire harness placement groove 110 extends along the Y-axis. The wire harness placement groove 110 is equivalent to forming a recessed structure on the upper surface of the bracket 10. This recess is used to accommodate the main wire harness 20. When the main wire harness 20 is placed in the wire harness placement groove 110, the size of the main wire harness 20 protruding from the upper surface of the bracket 10 is reduced.

[0036] The wire harness placement groove 110 is a continuous groove structure set on the bracket 10, so that the main wire harness 20 is inserted into the wire harness placement groove 110 from beginning to end.

[0037] A plurality of wire harness limiting blocks 120 are spaced apart on the bracket 10, and the wire harness placement groove 110 has a bottom surface and side walls on both sides. The wire harness limiting blocks 120 are alternately distributed on both sides of the wire harness placement groove 110, with two adjacent wire harness limiting blocks 120 located on both sides of the wire harness placement groove 110, respectively. Figure 1B As shown, starting from the top, the first wire harness limiting block 120 is located on the right side of the wire harness placement slot 110, the second wire harness limiting block 120 is located on the left side of the wire harness placement slot 110, and the third wire harness limiting block 120 is located on the right side of the wire harness placement slot 110, and so on, alternating at intervals.

[0038] Two adjacent wire harness limiting blocks 120 have a certain distance between them in the Y-axis direction, and the wire harness limiting blocks 120 form a wire harness limit for the main wire harness 20.

[0039] Combination Figure 1C , Figure 2CAs shown, the wire harness limiting block 120 includes a lateral top block 121 and a limiting pressure block 122. The lateral top block 121 and the limiting pressure block 122 are two parts of a wire harness limiting block 120. The lateral top block 121 is located in the wire harness placement groove 110. The lateral top block 121 extends along the X-axis direction, and there is a certain distance between the end of the lateral top block 121 and the side wall of the wire harness placement groove 110 (where the wire harness limiting block 120 is located). Figure 1C (D1) can constrain the main wire harness 20 in the X-axis direction. That is, the lateral top block 121 will reduce the width of the wire harness placement slot 110 at its location. For example, for the wire harness limiting block 120 located on the right side, its lateral top block 121 protrudes along the X-axis from the right side wall of the wire harness placement slot 110, and the left end of the lateral top block 121 pushes the main wire harness 20 against the left side wall; for the wire harness limiting block 120 located on the left side, its lateral top block 121 protrudes along the X-axis from the left side wall of the wire harness placement slot 110, and the right end of the lateral top block 121 pushes the main wire harness 20 against the right side wall.

[0040] In general, the lateral top block 121 is used to push the main wire harness 20 against the opposite side wall of the wire harness placement slot 110. The lateral top block 121 on the right side brings the main wire harness 20 closer to the left side wall of the wire harness placement slot 110, and the lateral top block 121 on the left side brings the main wire harness 20 closer to the right side wall of the wire harness placement slot 110. The wire harness limiting blocks 120, alternately arranged on the left and right side walls of the wire harness placement slot 110, cause the main wire harness 20 to form alternating bends, thus forming... Figure 3A , Figure 3B In the serpentine configuration shown, the main wire harnesses 20 between adjacent wire harness limiting blocks 120 are arranged at an angle or arc to reduce the movement of the main wire harnesses 20 relative to the wire harness placement slot 110. The position where the lateral top block 121 contacts the main wire harness 20 can be an arc surface to maintain a uniform pressure distribution when in contact with the main wire harness 20.

[0041] The limiting block 122 is a cantilever, with one end of the limiting block 122 suspended in the X-axis direction. The left end of the limiting block 122 located on the right side of the wire harness placement groove 110 is suspended, and the right end of the limiting block 122 located on the left side of the wire harness placement groove 110 is suspended. There is a certain gap between the lower surface of the limiting block 122 and the upper surface of the wire harness placement groove 110, forming a Z-axis limiting for the main wire harness 20. The limiting block 122 prevents the main wire harness 20 from disengaging from the wire harness placement groove 110 along the depth (Z-axis) direction.

[0042] A gap is left between the limiting block 122 and the other side wall of the wire harness placement groove 110 for the main wire harness 20 to be placed and removed. That is, there is a gap between the left end of the limiting block 122 located on the right side of the wire harness placement groove 110 and the left side wall of the wire harness placement groove 110, and there is a gap between the right end of the limiting block 122 located on the left side of the wire harness placement groove 110 and the right side wall of the wire harness placement groove 110. The gap between the suspended end of the limiting block 122 and the side wall of the wire harness placement groove 110 is slightly smaller than the diameter of the main wire harness 20, causing the limiting block 122 to undergo slight elastic deformation during the process of the main wire harness 20 moving in or out.

[0043] The battery cell connection system of this utility model constrains the main wire harness 20 in the Z-axis direction through the limiting pressure block 122, eliminating the need for additional accessories such as cable ties to constrain the main wire harness 20; and the lateral top block 121 causes the main wire harness 20 to extend in an alternating zigzag pattern, making it less likely for the main wire harness 20 to shift relative to the wire harness placement slot 110, resulting in higher stability of the main wire harness 20 and reducing the likelihood of pulling on the acquisition line 201, thus greatly reducing the probability of damage to the fixing point of the acquisition line 201 and the main wire harness 20 due to tension.

[0044] Combination Figure 1A , Figure 1C As shown, the present invention provides several reinforcing grooves 111 on the bottom surface of the wire harness placement groove 110. The reinforcing grooves 111 are further recessed downward relative to the wire harness placement groove 110, which can provide a larger Z-axis clearance space.

[0045] The width (X-axis) of the reinforcing groove 111 is slightly smaller than the width of the wire harness placement groove 110, and the length (Y-axis) of the reinforcing groove 111 is much smaller than the length of the wire harness placement groove 110. The reinforcing grooves 111 are arranged along the length of the bracket 10, that is, several reinforcing grooves 111 are distributed at intervals along the Y-axis. No reinforcing grooves 111 are provided at the location where the wire harness limiting block 120 is located.

[0046] Combination Figure 1A , Figure 1C As shown, several friction pillars 112 are arranged within the reinforcing groove 111. The friction pillars 112 protrude upwards along the Z-axis from the bottom surface of the reinforcing groove 111. The X-axis dimension of the friction pillar 112 is larger than its Y-axis dimension, slightly smaller than the X-axis dimension of the reinforcing groove 111, and much smaller than the Y-axis dimension of the reinforcing groove 111. Multiple friction pillars 112 are arranged within a single reinforcing groove 111, spaced apart along the Y-axis. The Z-axis dimension of the friction pillar 112 is approximately equal to the Z-axis depth of the reinforcing groove 111; the specific height can be set as needed. By setting the friction pillars 112, the height variation of the main wire harness 20 is minimized, while the structural strength of the reinforcing groove 111 is also increased.

[0047] Each battery cell is connected to a corresponding acquisition line 201, and all acquisition lines 201 are brought together to form a main harness 20. The connection point between the acquisition line 201 and the main harness 20 is located between adjacent friction posts 112, so that the connection point between the acquisition line 201 and the main harness 20 protrudes upward.

[0048] A wire-passing groove 113 is provided on the side wall of the wire harness placement groove 110. The Z-axis depth of the wire-passing groove 113 is less than the Z-axis depth of the wire harness placement groove 110. The acquisition line 201 extends from the wire-passing groove 113 to the left and right sides of the wire harness placement groove 110. The wire-passing groove 113 is used to connect the acquisition line 201 with the main wire harness 20, so that the top of the main wire harness 20 and the top of the acquisition line 201 are in the same plane.

[0049] The wire guide groove 113 is provided with a retaining block 1131 for holding the acquisition wire 201. The number of retaining blocks 1131 varies depending on the number of acquisition wires 201 corresponding to one battery cell, corresponding to the number of acquisition wires 201 set. Figure 3A , Figure 3B As shown, one battery cell can be configured with one, two, or three acquisition lines 201.

[0050] When there is only one acquisition line 201, two locking blocks 1131 are spaced apart along the Y-axis to form a gap. The acquisition line 201 passes through the gap formed between the two locking blocks 1131. Specifically, the gap between the locking blocks 1131 is used to hold the nickel sheet (acquisition line fixing plate) of the acquisition line 201. When there are two acquisition lines 201, three locking blocks 1131 are spaced apart along the Y-axis to form two gaps. The two adjacent gaps share the same locking block 1131. The acquisition line 201 passes through the two gaps formed between the three locking blocks 1131. If there are more acquisition lines 201, more locking blocks 1131 are set.

[0051] Combination Figure 1C As shown, the length (X-axis) D1 of the lateral top block 121 is 7-9 mm, for example, 8 mm. The spacing (Y-axis) of the harness limiting blocks 120 is 110-115 mm. The above ranges include endpoint values.

[0052] Based on any of the above technical solutions and their combinations, the wire harness placement groove 110 of this utility model has a plurality of conductive busbar mounting grooves 130 arranged on its side. The conductive busbar mounting grooves 130 can be arranged on one side of the wire harness placement groove 110, or simultaneously on both sides of the wire harness placement groove 110. The structure shown in the accompanying drawings of this utility model is that two rows of conductive busbar mounting grooves 130 are arranged on both sides of the wire harness placement groove 110.

[0053] The conductive busbar mounting slots 130 are arranged along the length (Y-axis) of the bracket 10. Each conductive busbar mounting slot 130 is used to install one conductive busbar 30, which is conductively connected to the battery cell and the acquisition line 201. Figure 4A , Figure 4B As shown, two structures of conductive busbar 30 are illustrated.

[0054] Combination Figure 1C , Figure 2C As shown, a positioning post 131 is provided in the conductive busbar mounting groove 130. The positioning post 131 is used to position and place the conductive busbar 30, as shown. Figure 4A , Figure 4B As shown, a positioning hole 301 is provided on the conductive busbar 30, and the positioning post 131 is inserted into the positioning hole 301 to limit the conductive busbar 30. The end of the positioning post 131 is chamfered to facilitate insertion.

[0055] Specifically, the bracket 10 of this utility model is formed by vacuum forming. The material thickness of the entire bracket 10 is approximately equal at all positions. Due to the wire harness placement groove 110, the bracket 10 forms a three-dimensional structure, and there is also extended material in the Z-axis (thickness) direction, which helps to strengthen the structural strength of the entire bracket 10. In addition, the reinforcing groove 111 further forms a three-dimensional structure for the bracket 10, and there is also extended material in the Z-axis (thickness) direction, which helps to strengthen the structural strength of the entire bracket 10.

[0056] This utility model features wire harness limiting blocks 120 on both sides of the wire harness placement groove 110. Their staggered arrangement prevents movement of the main wire harness. Compared to traditional cable ties, this structure reduces wire harness stress, thus protecting the acquisition line 201. It also reduces the need for manual cable ties, thereby lowering costs. The friction post 112 structure further reduces stress on the wire harness, thus protecting it.

[0057] The positioning block 1131 positions the nickel sheet (acquisition line fixing plate) of the acquisition line 201 to prevent the acquisition line from falling off during transportation / handling.

[0058] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electrical cell connection system, characterized by include: A bracket (10) extends along the arrangement direction of the battery cells; the bracket (10) is provided with a wire harness placement groove (110) for placing the wire harness, and the wire harness placement groove (110) extends along the length direction of the bracket (10). A plurality of wire harness limiting blocks (120) are spaced apart on the bracket (10), and two adjacent wire harness limiting blocks (120) are located on both sides of the wire harness placement groove (110); The wire harness limiting block (120) includes a lateral top block (121) and a limiting pressure block (122); the lateral top block (121) is used to push the main wire harness (20) against the opposite side wall of the wire harness placement groove (110), so that the main wire harness (20) forms alternating bends; the limiting pressure block (122) is a cantilever, used to prevent the main wire harness (20) from leaving the wire harness placement groove (110) along the depth direction, and a gap is left between the limiting pressure block (122) and the other side wall of the wire harness placement groove (110) for the main wire harness (20) to be picked up and put in.

2. The cell connection system of claim 1, wherein, The bottom surface of the wire harness placement slot (110) is provided with a plurality of reinforcing slots (111), and the reinforcing slots (111) are arranged in a direction that extends along the length of the bracket (10).

3. The cell connection system of claim 2, wherein, A plurality of friction columns (112) are provided inside the reinforcing groove (111), and the friction columns (112) protrude from the bottom surface of the reinforcing groove (111).

4. The cell connection system of claim 3, wherein, The connection point between the acquisition line (201) and the main wire bundle (20) is located between the friction column (112).

5. The cell connection system of claim 1, wherein, The wire harness placement slot (110) has a wire passage groove (113) on its side wall.

6. The cell connection system of claim 5, wherein, The groove (113) is provided with a locking block (1131) for locking the acquisition line (201).

7. The cell connection system of claim 1, wherein, The length of the lateral top block (121) is 7-9mm, and the spacing between the wire harness limiting blocks (120) is 110-115mm.

8. The cell connection system of any one of claims 1 to 7, wherein, The wire harness placement slot (110) has several conductive busbar mounting slots (130) arranged on its side, and the arrangement direction of the conductive busbar mounting slots (130) extends along the length direction of the bracket (10).

9. The cell connection system of claim 8, wherein, The conductive busbar mounting groove (130) is provided with a positioning post (131), which is used to position and place the conductive busbar (30).

10. The cell connection system of claim 8, wherein, The bracket (10) is formed by vacuum forming process.

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