Wire harness isolation plate of battery module

Abstract

The invention relates to the technical field of battery module accessories, in particular to a wire harness isolation plate of a battery module, which comprises a substrate, and a wire harness flange and a wire harness arranged on the top surface of the substrate, the wire harness flanges comprise a neatening flange, a guiding flange and a wire pressing flange; the neatening flange, the guiding flange and the substrate enclose a wiring groove for placing a wire harness, the guiding flange is provided with a plurality of openings for leading out leads of the wire harness, and the wire pressing flange is arranged above the wiring groove. According to the invention, the wiring of the wire harness on the wire harness isolation plate can be regulated.

Description

[0001] This case is a divisional application based on the invention patent filed on June 20, 2023, with application number 202310732212.8 and title "A Wire Harness Isolation Plate Assembly". Technical Field

[0002] This invention relates to the field of battery module accessories technology, and in particular to a wiring harness isolation plate for a battery module. Background Technology

[0003] With the continuous development of energy storage devices, customers are demanding increasingly higher performance from these devices. As a core component of energy storage cell modules, the wire harness isolation plate assembly separates the wire harness from the cell to protect it. However, the wiring on the current wire harness isolation plate assembly is rather messy, which can easily cause interference between the wire harness and the laser welding machine during the welding of the aluminum foil and the cell, leading to poor welding results. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a wire harness isolation plate for a battery module, which can organize the wiring of the wire harness on the wire harness isolation plate.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a wire harness isolation plate for a battery module, including a substrate and a wire harness baffle and a wire harness disposed on the top surface of the substrate; The wire harness retaining edge includes a regular retaining edge, a guide retaining edge, and a wire pressing retaining edge; the regular retaining edge, the guide retaining edge, and the substrate form a wiring groove for placing the wire harness; the guide retaining edge is provided with multiple openings for the wires of the wire harness to be led out; and the wire pressing retaining edge is disposed above the wiring groove. The bottom surface of the substrate is provided with a recessed groove, and the top surface of the substrate is provided with a surrounding wall and an aluminum bar. The surrounding wall, the guide edge, and the substrate form a plurality of mounting slots for placing the aluminum bar. The mounting slots are connected to the wiring slots through openings. The top surface of the substrate is provided with a barrier along the edge contour, and the height of the barrier is higher than the height of the wire harness edge and the height of the wall. The current carrying capacity of the aluminum bar is greater than or equal to three times the current carrying cross-section.

[0006] Furthermore, the aluminum bar includes a series aluminum bar, which includes a pressure relief protrusion, a first aluminum bar, and a second aluminum bar; the pressure relief protrusion 521 has two connecting arms that are respectively connected to the first aluminum bar and the second aluminum bar.

[0007] Furthermore, the two connecting arms form an angle of 50° to 60°.

[0008] Furthermore, the aluminum bar also includes an output stage aluminum bar, which has a folded edge bent toward the bottom surface of the substrate, and the folded edge is provided with an elongated mounting hole arranged in the vertical direction.

[0009] Furthermore, a gap of 0.5 mm to 1 mm is left between the edge of the substrate and the folded edge.

[0010] Furthermore, the sink is provided with reinforcing ribs and pressure relief holes penetrating the substrate.

[0011] Furthermore, the enclosure and / or guide rail are provided with positioning protrusions extending toward the mounting groove.

[0012] Furthermore, the fence and / or guide rails are provided with buckles.

[0013] Furthermore, the substrate is provided with multiple assembly positioning holes.

[0014] Furthermore, a plurality of mounting posts are provided on the top surface of the substrate, and the mounting posts have assembly holes. The height of the mounting posts is lower than the height of the enclosure.

[0015] The beneficial effects of the present invention are as follows: a wire harness baffle is provided on the top surface of the substrate, and the regular baffle, the guide baffle and the substrate together form a wiring groove for placing the wire harness, so that the wire harness is wired along the regular baffle. Then, according to the placement position of the aluminum bar on the substrate, the lead wire of the wire harness is led out from the corresponding opening on the guide baffle, thereby standardizing the arrangement of the wire harness on the substrate. At the same time, the wire clamping baffle is used to prevent the wire harness from falling out of the wiring groove. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a wiring harness isolation plate for a battery module in a specific embodiment of the present invention; Figure 2 This is a schematic diagram of the top surface structure of the substrate of the wire harness separator of a battery module in a specific embodiment of the present invention; Figure 3 for Figure 2 Enlarged view of part A of a wiring harness isolation plate for a battery module; Figure 4 for Figure 2 Enlarged view of part B of a wiring harness isolation plate for a battery module; Figure 5 This is a schematic diagram of the bottom surface structure of the substrate of the wire harness separator of a battery module in a specific embodiment of the present invention; Figure 6 This is a schematic diagram of the assembly structure between the aluminum busbar of the wiring harness separator plate of a battery module and the surrounding wall in a specific embodiment of the present invention; Figure 7This is a schematic diagram of the assembly structure between the aluminum bar and the clip of the wiring harness separator of a battery module in a specific embodiment of the present invention; Figure 8 This is a front view schematic diagram of the series aluminum busbar of the wiring harness isolation plate of a battery module in a specific embodiment of the present invention; Figure 9 This is a side view of the series aluminum busbar of the wiring harness separator of a battery module in a specific embodiment of the present invention. Figure 10 This is a schematic diagram of the output stage aluminum bar of a battery module wiring harness isolation plate in a specific embodiment of the present invention; Figure 11 This is a schematic diagram of the assembly structure of the output stage aluminum bar of the wiring harness separator of a battery module and the substrate in a specific embodiment of the present invention. Label Explanation: 1. Substrate; 11. Recess; 111. Reinforcing rib; 112. Pressure relief hole; 12. Enclosure; 13. Assembly positioning hole; 14. Mounting post; 2. Wire harness retaining edge; 21. Neat retaining edge; 22. Guide retaining edge; 221. Opening; 23. Wire clamping retaining edge; 3. Wiring harness; 4. Fence; 41. Positioning protrusion; 42. Buckle; 5. Aluminum bar; 51. Cold heading groove; 511. Welding positioning hole; 52. Series aluminum bar; 521. Pressure relief protrusion; 522. First aluminum bar; 523. Second aluminum bar; 53. Output stage aluminum bar; 531. Folded edge; 5311. Assembly elongated hole. Detailed Implementation

[0017] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0018] The substrate 1 provided in this application embodiment is preferably made of PC+ABS plastic material, and the thickness of the substrate 1 is 1.5mm to 2mm, thereby satisfying the functions of RIT, flame retardancy, and insulation.

[0019] In one implementation, please refer to Figure 1 and Figure 2As shown, a wiring harness separator for a battery module includes a substrate 1 and a wiring harness guard 2 and a wiring harness 3 disposed on the top surface of the substrate 1. The wiring harness guard 2 includes a leveling guard 21, a guiding guard 22, and a wire pressing guard 23. The leveling guard 21, the guiding guard 22, and the substrate 1 form a wiring groove for placing the wiring harness 3. The guiding guard 22 is provided with a plurality of openings 221 for the leads of the wiring harness 3 to be led out. The wire pressing guard 23 is disposed above the wiring groove. Preferably, the openings 221 are rounded to prevent the openings 221 from scratching and damaging the outer sheath of the leads of the wiring harness 3. A wire harness baffle 2 is provided on the top surface of the substrate 1. The regular baffle 21 and the guide baffle 22 of the wire harness baffle 2 and the substrate 1 form a wiring groove for placing the wire harness 3. The wire harness 3 is wired along the regular baffle 21. Then, according to the placement position of the aluminum bar 5 on the substrate 1, the lead wire of the wire harness 3 is led out from the corresponding opening 221 on the guide baffle 22, thereby standardizing the arrangement of the wire harness 3 on the substrate 1. At the same time, the wire clamping baffle 23 is used to prevent the wire harness 3 from detaching from the wiring groove.

[0020] In a first possible implementation, the pressure guard 23 has a free end, and the pressure guard 23 is provided on the regular guard 21.

[0021] In a second possible implementation, the pressure guard 23 has a free end, and the pressure guard 23 is provided on the guide guard 22.

[0022] In a third possible implementation, the pressure guard 23 has a free end, and the pressure guard 23 is provided on the regular guard 21 and the guide guard 22.

[0023] According to the first to third possible implementations described above, during the arrangement of the wire harness 3, since the wire clamping edge 23 has a free end, the wire harness 3 can be quickly placed in the wiring trough through the free end of the wire clamping edge 23.

[0024] In the first possible implementation described above, please refer to Figure 3 As shown, the thickness at the connection between the pressure guard 23 and the regular guard 21 is greater than the thickness of the free end of the pressure guard 23. Increasing the thickness at the connection between the pressure guard 23 and the regular guard 21 improves the connection strength of the pressure guard 23 on the regular guard 21.

[0025] In the second possible implementation described above, please refer to Figure 4 As shown, the thickness at the connection between the pressure guard 23 and the guide guard 22 is greater than the thickness of the free end of the pressure guard 23. Increasing the thickness at the connection between the pressure guard 23 and the guide guard 22 improves the connection strength of the pressure guard 23 on the guide guard 22.

[0026] In the third possible implementation described above, please refer to Figure 3 and Figure 4 As shown, the thickness at the connection between the pressure guard edge 23 and the guide guard edge 22 is greater than the thickness of the free end of the pressure guard edge 23. Increasing the thickness at the connection between the pressure guard edge 23 and the regular guard edge 21 improves the connection strength of the pressure guard edge 23 on the regular guard edge 21. Increasing the thickness at the connection between the pressure guard edge 23 and the guide guard edge 22 also improves the connection strength of the pressure guard edge 23 on the guide guard edge 22.

[0027] In one implementation, please refer to Figure 5 As shown, a recess 11 is provided on the bottom surface of the substrate 1. The flatness of the end face of the bottom surface of the substrate 1, excluding the recess 11, is 0.5 mm. Providing a recess 11 on the bottom surface of the substrate 1 reduces the contact between the bottom surface of the substrate 1 and the mating surface of the battery cell, thereby reducing the installation error between the substrate 1 and the battery cell.

[0028] In one alternative implementation, please refer to Figure 5 As shown, the recess 11 is provided with reinforcing ribs 111 and pressure relief holes 112 penetrating the substrate 1. The added reinforcing ribs 111 can enhance the strength of the substrate 1. When the substrate 1 is assembled with the battery cell, the pressure relief holes 112 can mate with the pressure relief ports of the battery cell. The assembly tolerance between the pressure relief holes 112 and the pressure relief ports of the battery cell is 0.5 mm to 1 mm.

[0029] In one implementation, please refer to Figure 1 and Figure 2 As shown, a surrounding wall 4 and an aluminum bar 5 are provided on the top surface of the substrate 1. The surrounding wall 4, the guide baffle 22, and the substrate 1 form a plurality of mounting slots for placing the aluminum bar 5. The mounting slots are connected to the wiring slots through openings 221. The mounting slots constrain the aluminum bar 5 to ensure the stability of the aluminum bar 5 when it is welded to the battery cell or the wire harness.

[0030] In the fourth possible implementation, please refer to Figure 6 As shown, the enclosure 4 is provided with a positioning protrusion 41 extending towards the mounting groove. The distance from the positioning protrusion 41 to the edge of the aluminum bar 5 is C, where C is 0.1mm to 0.3mm, preferably 0.3mm, to avoid an interference fit between the positioning protrusion 41 and the aluminum bar 5.

[0031] In the fifth possible implementation, please refer to Figure 6As shown, the guide flange 22 is provided with a positioning protrusion 41 extending toward the mounting groove. The distance from the positioning protrusion 41 to the edge of the aluminum bar 5 is C, where C is 0.1mm to 0.3mm, preferably 0.3mm, to avoid an interference fit between the positioning protrusion 41 and the aluminum bar 5.

[0032] In the sixth possible implementation, please refer to Figure 6 As shown, the enclosure 4 and the guide edge 22 are provided with positioning protrusions 41 extending toward the mounting groove. The distance from the positioning protrusions 41 to the edge of the aluminum bar 5 is C, where C is 0.1mm to 0.3mm, preferably 0.3mm, to avoid an interference fit between the positioning protrusions 41 and the aluminum bar 5.

[0033] According to the fourth to sixth possible implementations described above, the positioning protrusion 41 can be used to constrain and position the aluminum bar 5 placed in the mounting groove.

[0034] In the seventh possible implementation, please refer to Figure 1 , Figure 2 and Figure 7 As shown, the enclosure 4 is equipped with a buckle 42. The distance from the buckle head to the end face of the aluminum bar 5 is D, where D is 0.1mm to 0.2mm, and the distance from the buckle body to the edge of the aluminum bar 5 is E, where E is 0.1mm to 0.3mm. Preferably, D is 0.2mm and E is 0.3mm, to avoid an interference fit between the positioning buckle 42 and the aluminum bar 5.

[0035] In the eighth possible implementation, please refer to Figure 1 , Figure 2 and Figure 7 As shown, a buckle 42 is provided on the guide edge 22. The distance from the buckle head to the end face of the aluminum bar 5 is D, where D is 0.1mm to 0.2mm, and the distance from the buckle body to the edge of the aluminum bar 5 is E, where E is 0.1mm to 0.3mm. Preferably, D is 0.2mm and E is 0.3mm, to avoid an interference fit between the positioning buckle 42 and the aluminum bar 5.

[0036] In the ninth possible implementation, please refer to Figure 1 , Figure 2 and Figure 7 As shown, the enclosure 4 and the guide edge 22 are equipped with buckles 42. The distance from the buckle head of the buckle 42 to the end face of the aluminum bar 5 is D, where D is 0.1mm to 0.2mm, and the distance from the buckle body of the buckle 42 to the edge of the aluminum bar 5 is E, where E is 0.1mm to 0.3mm. Preferably, D is 0.2mm and E is 0.3mm, to avoid an interference fit between the positioning buckle 42 and the aluminum bar 5.

[0037] According to the seventh to ninth possible implementations described above, the snap fastener 42 can prevent the aluminum bar 5 from coming out of the mounting groove.

[0038] In one implementation, please refer to Figure 8 and Figure 10 As shown, a cold heading groove 51 is provided on the end face of the aluminum bar 5, and a welding positioning hole 511 is provided in the cold heading groove 51. Preferably, the cold heading groove 51 has a 60° chamfer on the end face of the aluminum bar 5, and is a circular groove with a flatness of 0.2mm, a cleanliness of ≤100RFU, and a diameter of 20mm. The welding positioning hole 511 is 3mm. The cold heading groove 51 is obtained by cold stamping, which makes the substrate crystal at the groove more compact, thereby making the welding more stable and improving the welding yield when the welding positioning hole 511 is welded to the electrode post of the battery cell.

[0039] In one alternative embodiment, the current carrying capacity of the aluminum bar 5 is greater than or equal to three times the current carrying cross-section to avoid the aluminum bar 5 generating a large amount of heat during operation.

[0040] In one alternative implementation, please refer to Figure 8 and Figure 9 As shown, the series aluminum bars 52 of the aluminum bars 5 include a pressure relief protrusion 521, a first aluminum bar 522, and a second aluminum bar 523. The pressure relief protrusion 521 has two connecting arms that respectively connect the first aluminum bar 522 and the second aluminum bar 523, and the two connecting arms form a clamp F of 50° to 60°, preferably 50°, 55°, or 60°. During operation, the battery cell undergoes a reciprocating expansion and contraction, causing a certain degree of movement in the first aluminum bar 522 and the second aluminum bar 523 connected in series. To prevent the solder joints of the first aluminum bar 522 and the second aluminum bar 523 from detaching from the battery cell, the pressure relief protrusion 521 is used to counteract the force exerted by the battery cell on the first aluminum bar 522 and the second aluminum bar 523.

[0041] In one alternative implementation, please refer to Figure 10 and Figure 11 As shown, the output stage aluminum bar 53 of the aluminum bar 5 has a folded edge 531 bent towards the bottom surface of the substrate 1, and the folded edge 531 is provided with a vertically oriented mounting elongated hole 5311. Due to manufacturing and assembly tolerances of various components on the substrate 1, a gap of 0.5mm to 1mm is left between the edge of the substrate 1 and the folded edge 531 to ensure smooth lead-out of the output stage aluminum bar 53. Furthermore, the mounting elongated hole 5311 on the folded edge 531 facilitates its fixation. Preferably, the mounting elongated hole 5311 has a diameter of 7mm and a length of 9mm.

[0042] In one implementation, please refer to Figure 1 and Figure 2 As shown, a barrier 12 is provided along the edge contour of the top surface of the substrate 1. The height of the barrier 12 is higher than the height of the wire harness edge 2 and the height of the wall 4. Multiple mounting positioning holes 13 are provided on the substrate 1. Because the height of the barrier 12 is higher than the height of the wire harness edge 2 and the wall 4, the insulating sheet can be embedded in the substrate 1 when it is used to shield the aluminum foil 5 on the substrate 1. The substrate 1 is fixed to the battery cell module using the mounting positioning holes 13.

[0043] In one alternative implementation, please refer to Figure 1 and Figure 2 As shown, a plurality of mounting posts 14 are provided on the top surface of the substrate 1. Each mounting post 14 has mounting holes, and the height of the mounting posts 14 is lower than the height of the enclosure 12. The insulating sheet is connected to the mounting posts 14 by plastic screws or plastic rivets. Preferably, the height of the enclosure 12 does not exceed 12 mm.

[0044] Example 1 A wiring harness isolation board for a battery module, please refer to Figure 1 and Figure 2 As shown, the device includes a substrate 1 and a wire harness guard 2 and a wire harness 3 disposed on the top surface of the substrate 1. The wire harness guard 2 includes a leveling guard 21, a guiding guard 22 and a wire pressing guard 23. The leveling guard 21, the guiding guard 22 and the substrate 1 form a wiring groove for placing the wire harness 3. The guiding guard 22 is provided with a plurality of openings 221 for the leads of the wire harness 3 to be led out. The wire pressing guard 23 is disposed above the wiring groove.

[0045] Example 2 This embodiment further defines the structure of the bottom surface of substrate 1 based on embodiment 1, as follows: Please refer to Figure 5 As shown, a recessed groove 11 is provided on the bottom surface of the substrate 1. A reinforcing rib 111 and a pressure relief hole 112 penetrating the substrate 1 are provided in the recessed groove 11.

[0046] Example 3 This embodiment further defines the structure of substrate 1 based on embodiment one or embodiment two, as follows: Please refer to Figure 1 and Figure 2 As shown, a wall 4 and an aluminum bar 5 are provided on the top surface of the substrate 1. The wall 4, the guide edge 22 and the substrate 1 form a plurality of mounting slots for placing the aluminum bar 5. The mounting slots are connected to the wiring slots through openings 221.

[0047] Example 4 This embodiment further defines the structure of the aluminum bar 5 based on embodiment three, as follows: Please refer to Figure 8 and Figure 10 As shown, a cold heading groove 51 is provided on the end face of the aluminum bar 5, and a welding positioning hole 511 is provided in the cold heading groove 51.

[0048] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A wiring harness separator for a battery module, characterized in that: The application relates to a wiring harness bracket, which comprises a substrate and a wiring harness baffle arranged on the top surface of the substrate. The wiring harness baffle comprises a regular baffle, a guide baffle and a wire pressing baffle; the regular baffle, the guide baffle and the substrate form a wiring slot for placing the wiring harness; the guide baffle is provided with a plurality of openings for leading out the lead wires of the wiring harness; and the wire pressing baffle is arranged above the wiring slot. The bottom surface of the substrate is provided with a sink, and the top surface of the substrate is provided with a wall and an aluminum bar; the wall, the guide baffle and the substrate form a plurality of mounting slots for placing the aluminum bar; and the mounting slots are communicated with the wiring slot through openings. The top surface of the substrate is provided with a surrounding baffle along the edge contour; the height of the surrounding baffle is higher than the height of the wiring harness baffle and the height of the wall. The current overcurrent capacity of the aluminum bar is greater than or equal to three times the overcurrent cross section.

2. The battery module harness isolation plate of claim 1, wherein: The aluminum bar comprises a series aluminum bar, which comprises a pressure relief protrusion, a first aluminum bar and a second aluminum bar; the pressure relief protrusion has two connecting arms connected with the first aluminum bar and the second aluminum bar respectively.

3. The battery module harness isolation plate of claim 2, wherein: The two connecting arms form an included angle of 50-60 degrees.

4. The battery module harness isolation plate of claim 1, wherein: The aluminum bar further comprises an output stage aluminum bar, which has a folding edge bent towards the bottom surface of the substrate; and the folding edge is provided with a mounting long hole arranged in the vertical direction.

5. The battery module harness isolation plate of claim 4, wherein: The edge of the substrate and the folding edge are left with a gap of 0.5-1 mm.

6. The battery module harness isolation plate of claim 1, wherein: The sink is provided with a reinforcing rib and a pressure relief hole penetrating through the substrate.

7. The battery module harness isolation plate of claim 1, wherein: The wall and / or the guide baffle are provided with a positioning protruding edge extending towards the mounting slot.

8. The harness isolation plate for a battery module according to claim 1 or 7, characterized by: The wall and / or the guide baffle are provided with a buckle.

9. The battery module harness isolation plate of claim 1, wherein: The substrate is provided with a plurality of mounting positioning holes.

10. The battery module harness isolation plate of claim 9, wherein: The top surface of the substrate is provided with a plurality of mounting columns, which have mounting holes and are lower than the height of the surrounding baffle.

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