Wire harness integrated busbar with positioning function

Abstract

A wire harness integrated busbar with a positioning function comprises a support and a plurality of battery cell connecting assemblies, each battery cell connecting assembly comprises a bus member and a wire harness, the bus member is fixed on the support, a nickel sheet is arranged at the end of the wire harness, the wire harness integrated busbar further comprises a plurality of positioning blocks, positioning columns are arranged on the positioning blocks, and the positioning columns are fixed on the support. Through holes are formed in the confluence piece and the nickel piece, the confluence piece and the nickel piece are arranged on the positioning column in a sleeving mode, a limiting part is arranged at the free end of the positioning column, and the limiting part is used for enabling the confluence piece to be attached to the nickel piece. Compared with the prior art, the wiring harness integrated busbar provided by the utility model is provided with the positioning block, so that no gap exists between the bus member and the nickel sheet, the welding quality of the bus member and the nickel sheet is fully ensured, and the problem of insufficient welding caused by the gap between the bus member and the nickel sheet is avoided. The positioning block can be suitable for all types of CCS, the universality is high, and the cost is further reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of wire harness integrated busbar, specifically relates to a wire harness integrated busbar with positioning function. BACKGROUND

[0002] In the field of new energy power and energy storage battery technology, in order to realize the monitoring of battery performance, the battery will be provided with CCS (Cell Contact System). Compared with the CCS of FPC type, the wire harness CCS has better advantages in signal transmission stability, cost, maintainability and overcurrent capacity, therefore, even if the integration of wire harness CCS is not as good as that of FPC type, it can be widely used in practice.

[0003] With the rapid development of new energy market, the demand for power and energy storage batteries is increasing, which directly promotes the strict requirements for the production efficiency and cost control of batteries and their components.

[0004] In the wire harness CCS, the fixation of nickel sheet (connected to the end of wire harness) and busbar is the key link to ensure the performance and safety of battery. In the existing production process, the fixation of nickel sheet and busbar mainly depends on positioning jig (the positioning jig includes jig main body and cover plate, the jig main body is provided with clamping groove, and the cover plate is covered on the clamping groove), and the specific operation steps are as follows: placing the busbar on the jig main body, then clamping the end of wire harness in the clamping groove of jig main body, and placing the nickel sheet on the busbar, then covering the cover plate on the clamping groove, and the cover plate presses the end of wire harness, so as to fix the nickel sheet on the busbar. After the fixation of nickel sheet is completed, laser welding is carried out to realize the final fixation of nickel sheet and busbar.

[0005] Although the above method can realize the fixation of nickel sheet, it has the following defects: first, high cost: the manufacturing and maintenance cost of jig is high, and since the shape and structure of nickel sheet and bar sheet of each wire harness CCS are different, a separate jig is needed for each CCS, which further increases the overall cost; second, unreliable welding: due to the influence of busbar, the positioning jig cannot directly position the four corners of nickel sheet to fix the nickel sheet, but uses the cover plate to press the end of wire harness, and fixes the nickel sheet by fixing the wire harness, however, after the cover plate presses the end of wire harness, the nickel sheet is easy to be lifted, and there is a gap between the nickel sheet and the busbar, which is easy to cause virtual welding between the nickel sheet and the busbar, or cannot be welded and fixed.

[0006] In other solutions, the nickel sheet and the busbar are also fixed by buckling, specifically, an opening is formed on the busbar, a bent buckle is formed on the nickel sheet, and the bent buckle is buckled into the opening, so that the nickel sheet and the busbar are fixed. However, the machining precision of the opening of the busbar and the bent buckle of the nickel sheet is high, which requires strict machining equipment and technology, increases the machining difficulty, otherwise, the busbar and the nickel sheet will be loose and cannot be fixed. High-precision machining also affects the overall production efficiency and makes the production cost difficult to control. Practical new type content

[0007] The utility model discloses a wire harness integrated busbar with positioning function.

[0008] In order to realize the above object, the utility model discloses a wire harness integrated busbar with positioning function, including support and a plurality of electric core connecting components, the electric core connecting component includes busbar and wire harness, the busbar is fixed on the support, and the end of wire harness is equipped with nickel sheet, and its characterized in that:

[0009] Still include a plurality of positioning blocks, be equipped with the positioning column on the positioning block, the busbar and nickel sheet all are equipped with through -hole, and the busbar and nickel sheet are set up on the positioning column, and the free end of positioning column is equipped with the limiting portion, and the limiting portion is used for making the busbar and nickel sheet adhere.

[0010] Preferably, the free end of the positioning column forms the limiting portion through a hot riveting process.

[0011] Preferably, the contour of the through hole of the nickel sheet does not exceed the contour of the through hole of the busbar.

[0012] Preferably, the contour of the through hole of the nickel sheet is inside the contour of the through hole of the busbar.

[0013] Preferably, the middle position of the support is provided with a wiring groove, and the wire harness is arranged in the wiring groove.

[0014] Preferably, the support is provided with a mounting groove, and the positioning block is arranged in the mounting groove.

[0015] Preferably, the position of the nickel sheet for welding with the busbar is located inside the through hole.

[0016] Compared with the prior art, the utility model has the beneficial effects that:

[0017] By setting a positioning block, the positioning post of the positioning block is used to position the busbar and the nickel sheet. The positioning post has a limiting part, which can make the busbar and the nickel sheet fit together, so that there is no gap between them. This fully guarantees the welding quality of the two and avoids the problem of poor welding caused by gaps between the busbar and the nickel sheet.

[0018] Positioning the busbar and nickel plate using positioning blocks and fitting them together is a lower manufacturing cost compared to using a jig, and requires no maintenance, thus reducing costs. At the same time, positioning blocks are applicable to all types of CCS (as long as holes are drilled in the busbar and nickel plate), which is highly versatile and further reduces costs.

[0019] The positioning of the positioning column and the limiting of the limiting part have no requirements for machining accuracy compared to the traditional clamping block structure. They are highly reliable and help control production costs and improve production efficiency. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the integrated busbar with positioning function in Example 1;

[0021] Figure 2 for Figure 1 A three-dimensional exploded view of the integrated busbar with positioning function;

[0022] Figure 3 for Figure 1 A schematic diagram of the three-dimensional structure of the positioning block;

[0023] 1. Bracket; 11. Wiring groove; 12. Limiting groove; 13. Through hole; 14. Mounting groove; 2. Positioning block; 21. Positioning post; 22. Limiting part; 3. Busbar; 4. Wire harness; 41. Nickel sheet; 5. Through hole. Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Example 1

[0026] A wire harness 4 integrated busbar with positioning function, see Figures 1-3 The device includes a bracket 1, multiple cell connection assemblies, and multiple positioning blocks 2. Each cell connection assembly includes a busbar 3 and a wiring harness 4. The busbar 3 is fixed to the bracket 1, and the end of the wiring harness 4 is provided with a nickel sheet 41. Positioning blocks 2 are provided with positioning posts 21. Both the busbar 3 and the nickel sheet 41 have through holes 5. The busbar 3 and the nickel sheet 41 are fitted onto the positioning posts 21. The free end of the positioning posts 21 is formed with a limiting part 22 through a hot riveting process. The limiting part 22 is used to ensure that the busbar 3 and the nickel sheet 41 are in contact.

[0027] The above-mentioned harness 4 integrated busbar of the embodiment, by setting the positioning block 2, the positioning column 21 of the positioning block 2 is used for positioning the busbar 3 and the nickel sheet 41, the free end of the positioning column 21 is formed into the limiting portion 22 through the hot riveting process, the limiting portion 22 can make the busbar 3 and the nickel sheet 41 adhere, so that there is no gap between the two, which fully guarantees the welding quality of the two, avoids the problem that virtual welding occurs due to the gap between the busbar 3 and the nickel sheet 41. The busbar 3 and the nickel sheet 41 are positioned by the positioning block 2 and adhered, which is lower in manufacturing cost compared with the way of using the jig, and maintenance is not needed, which reduces the cost, and at the same time, the positioning block 2 can be applied to all types of CCS (as long as the hole is opened on the busbar 3 and the nickel sheet 41), which is high in universality, which further reduces the cost. The positioning of the positioning column 21 and the limiting and fixing of the limiting portion 22, compared with the traditional clamping block structure, basically have no machining precision requirement, are high in use reliability, and are beneficial to controlling the production manufacturing cost and production efficiency.

[0028] In the embodiment, the positioning block 2 is processed through the injection molding process.

[0029] In the embodiment, the profile of the through hole 5 of the nickel sheet 41 does not exceed the profile of the through hole 5 of the busbar 3, so that the busbar 3 can bear the nickel sheet 41, and the profile of the through hole 5 of the nickel sheet 41 does not exceed the profile of the through hole 5 of the busbar 3 (that is, the nickel sheet 41 is partially located in the through hole 5 of the busbar 3 (hereinafter referred to as the protruding portion located in the through hole 5 of the busbar 3), so that in the hot riveting process, the limiting portion 22 presses down the protruding portion of the nickel sheet 41, and the nickel sheet 41 is partially buckled, thereby affecting the welding effect. Preferably, since the busbar 3 and the nickel sheet 41 are gap-fitted with the positioning column 21, in order to ensure that the nickel sheet 41 does not protrude from the through hole 5 of the busbar 3, the profile of the through hole 5 of the nickel sheet 41 is inside the profile of the through hole 5 of the busbar 3.

[0030] In the embodiment, the middle position of the support 1 is provided with the wiring groove 11, and the harness 4 is arranged in the wiring groove 11, which makes the arrangement of the harness 4 more regular, and each side of the wiring groove 11 is provided with a row of limiting grooves 12, one limiting groove 12 is used for installing one busbar 3, which improves the installation stability and reliability of the busbar 3, and the bottom of each limiting groove 12 is provided with a through hole 13 for connecting the busbar 3 with the battery cell.

[0031] In the embodiment, the support 1 is provided with the mounting groove 14, and the positioning block 2 is arranged in the mounting groove, specifically, the shape and size of the mounting groove 14 are adapted to the positioning block 2, and the positioning block 2 is clamped in the mounting groove 14, which can stably clamp the positioning block 2 in the mounting groove 14 and reduce the shaking.

[0032] In the embodiment, the through hole 5 is located outside the position of the nickel sheet 41 for welding with the busbar 3, so that even if the nickel sheet 41 is slightly raised after the hot riveting is completed, the nickel sheet 41 can still be closely attached to the busbar 3 under the action of the wire harness 4, the welding effect is guaranteed, and the through hole 5 is avoided to be located inside the welding position, the free end of the nickel sheet 41 is slightly raised after the hot riveting is completed, and the welding quality is affected.

[0033] Embodiment 2

[0034] An assembly method of the wire harness 4 integrated busbar, the wire harness 4 integrated busbar is the wire harness 4 integrated busbar with the positioning function of the embodiment 1, and the assembly steps of the wire harness 4 integrated busbar are as follows.

[0035] Step S1: placing the positioning block 2 on a machining platform, and sequentially sleeving the busbar 3 and the nickel sheet 41 on the positioning column 21 of the positioning block 2;

[0036] In order to enable the positioning block 2 to be stably installed on the machining platform, the machining platform is provided with the mounting groove 14 as described above, and the positioning block 2 can be clamped in the groove.

[0037] Step S2: riveting the free end of the positioning column 21 to form a limiting portion 22 by using a hot riveting device, the limiting portion 22 compresses the nickel sheet 41, so that the nickel sheet 41 and the busbar 3 are attached;

[0038] Step S3: welding the nickel sheet 41 and the busbar 3 by using a welding device to form a cell connecting assembly;

[0039] Step S4: carrying the cell connecting assembly to the support 1, fixing the busbar 3 on the support 1, and forming the wire harness 4 integrated busbar.

[0040] The assembly steps of the wire harness 4 integrated busbar described above do not have precision requirements for the used devices, which is beneficial to control the production manufacturing cost and improve the production efficiency. Meanwhile, the busbar 3 and the nickel sheet 41 are positioned by the positioning block 2 and the positioning column 21 of the positioning block 2, the free end of the positioning column 21 forms the limiting portion 22 by the hot riveting process, the limiting portion 22 enables the busbar 3 and the nickel sheet 41 to be attached, so that no gap exists between the busbar 3 and the nickel sheet 41, the welding quality of the two is fully guaranteed, and the problem of virtual welding caused by the gap between the busbar 3 and the nickel sheet 41 is avoided.

[0041] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not the limitation of the embodiments of the utility model. For ordinary skilled in the art, other different forms of changes or changes can be made on the basis of the above description. Here, it is not necessary and impossible to exhaust all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A wiring harness integrated busbar with positioning function, comprising a bracket and a plurality of battery cell connecting assemblies, the battery cell connecting assembly comprising a busbar and a wiring harness, the busbar being fixed to the bracket, and the end of the wiring harness being provided with a nickel sheet, characterized in that: a plurality of positioning blocks are further included, the positioning blocks being provided with positioning columns, the busbar and the nickel sheet are both provided with through holes, the busbar and the nickel sheet are sleeved on the positioning columns, the free end of the positioning column is provided with a limiting portion, and the limiting portion is used to make the busbar and the nickel sheet fit together. The free end of the positioning column forms the limiting portion through a hot riveting process.

2. The wire harness integrated busbar with positioning function according to claim 1, characterized in that: The contour of the through hole of the nickel sheet does not exceed the contour of the through hole of the busbar.

3. The wire harness integrated busbar with positioning function according to claim 1, characterized in that: The contour of the through hole of the nickel sheet is inside the contour of the through hole of the busbar.

4. The wire harness integrated busbar with positioning function according to claim 3, characterized in that: The middle position of the bracket is provided with a wiring slot, the wiring harness is arranged in the wiring slot, and each side of the wiring slot is provided with a row of limiting slots, one limiting slot being used to install one busbar, and the bottom of each limiting slot is provided with a through hole for the busbar to be connected with the battery cell.

5. The wire harness integrated busbar with positioning function according to claim 1, characterized in that: The bracket is provided with an installation slot, and the positioning block is arranged in the installation slot.

6. The wire harness integrated busbar with positioning function according to claim 1, characterized in that: The position of the nickel sheet used for welding with the busbar is located inside the through hole.

7. The wire harness integrated busbar with positioning function according to claim 1, characterized in that: ​

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