Low-cost integrated busbar

Abstract

The utility model discloses a low-cost integrated busbar. The integrated busbar comprises an acquisition flat cable, a plurality of connecting bars and a plurality of collectors. The plurality of connecting bars are arranged on the two sides of the acquisition flat cable in two rows and are used for connecting single batteries; the plurality of collectors are arranged on the connecting bar; the acquisition flat cable comprises an electronic flat cable and a plurality of branch flat cables, the electronic flat cable is arranged between the two columns of connecting bars, the plurality of branch flat cables are arranged on two sides of the electronic flat cable in two columns, a first end of each branch flat cable is connected with the electronic flat cable, and a second end of each branch flat cable is connected with the collector. The electronic flat cable has lower production cost, and the integrated busbar mainly comprises the electronic flat cable, the plurality of connecting bars and the plurality of collectors, so that the integrated busbar has lower production cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of integrated busbar technical field, especially a kind of low-cost integrated busbar. BACKGROUND

[0002] In order to improve the automation management, monitoring of new energy battery, and the security of use, integrated busbar and become the necessary structure of new energy battery. The main structure of new energy battery is integrated busbar and battery pack, the battery pack includes a plurality of display distribution a plurality of battery cells, integrated busbar covers the top of battery pack, and there is between or indirect electrical connection with the positive and negative poles of each battery cell, through integrated busbar to each battery cell information collection, accurate monitoring the internal state of battery pack.

[0003] Many integrated busbars pursue the stability of battery cell, greatly improve the performance of each component of integrated busbar, including large-scale use of FPC (Flexible Printed Circuit), the performance parameters of these structures or components greatly increase the production cost of integrated busbar, there is the problem of high integration cost. UTILITY MODEL CONTENT

[0004] In order to solve the technical problem of high integration cost in the prior art, one of the purposes of the utility model is to provide a low-cost integrated busbar.

[0005] One of the purposes of the utility model is achieved by the following technical scheme: a low-cost integrated busbar, the integrated busbar includes an acquisition cable, a plurality of connection cables and a plurality of collectors;

[0006] A plurality of connection cables are arranged on both sides of the acquisition cable in two columns, for connecting battery monomers.

[0007] A plurality of collectors are arranged on the connection cable.

[0008] The acquisition cable includes an electronic cable and a plurality of branch cables, the first end of each branch cable is connected to the electronic cable, and the second end of each branch cable is connected to the collector.

[0009] Optionally, the branch cable is a FIC cable.

[0010] Optionally, the integrated busbar further includes a connector, and the connector is connected to the electronic cable.

[0011] Optionally, the collector includes a plurality of voltage collectors and a plurality of temperature collectors.

[0012] Optionally, the voltage collector is a nickel sheet terminal.

[0013] Optionally, the connecting row is provided with a clamping hole;

[0014] The temperature collector comprises a collecting main plate, a thermal sensitive chip and a nickel sheet, the collecting main plate is arranged on the connecting row, the thermal sensitive chip is arranged on the collecting main plate, one end of the nickel sheet is connected with the collecting main plate, the other end of the nickel sheet is provided with a bending part, and the bending part is clamped into the clamping hole.

[0015] Optionally, the connecting row comprises a plurality of series connecting rows and two output pole pieces;

[0016] The connecting rows are arranged in two rows, and the two output pole pieces are located at two ends of one row of the connecting rows or at end portions of the two rows of the connecting rows.

[0017] Optionally, the integrated female row further comprises a tray, and the tray is provided with a plurality of first openings corresponding to electrodes of the battery cells;

[0018] The series connecting row is fixed on the tray, and the two ends of the series connecting row are welded with electrodes of two adjacent battery cells respectively.

[0019] Optionally, the two ends of the series connecting row are provided with welding holes and connecting holes, the series connecting row is welded with the electrodes of the battery cells at the welding holes, and the series connecting row is fixedly connected with the tray at the connecting holes.

[0020] Optionally, the tray is provided with two rows of positioning grooves;

[0021] The two rows of connecting rows are arranged in the two rows of positioning grooves respectively.

[0022] Compared with the prior art, the utility model has the advantages that:

[0023] In the utility model, for the electronic wire, specifically, the electronic wire comprises a plurality of first wires connected side by side, the first wire comprises a first insulating layer and a wire core, and the first insulating layers of adjacent first wires are connected together. For the production process of the electronic wire, generally, the electronic wire can be processed through the extrusion forming equipment and process, a plurality of first wires are extruded side by side, and the first insulating layers on adjacent first wires are extruded in a cohesive state, so that the first insulating layers of adjacent first wires are connected together to form a plurality of first wires connected side by side, thereby processing the electronic wire. Therefore, compared with the complex process related to the FPC, the electronic wire has a lower production cost. In the utility model, the integrated female row mainly comprises the collecting wire, and the electronic wire as the main wire can effectively reduce the production cost of the collecting wire, so that the integrated female row has a lower production cost. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1This is a schematic diagram of the integrated busbar structure of this utility model;

[0025] Figure 2 This is a top view of the integrated busbar of this utility model;

[0026] Figure 3 This is a schematic diagram of the temperature acquisition device and corresponding molecular arrangement in the integrated busbar of this utility model;

[0027] Figure 4 This is a schematic diagram of another temperature acquisition device in the integrated busbar of this utility model;

[0028] Figure 5 This is a schematic diagram of the series busbar structure in the integrated busbar of this utility model.

[0029] Explanation of reference numerals in the attached diagram:

[0030] 1. Electronic ribbon cable; 11. First conductor;

[0031] 2. Connecting bar; 21. Series bar; 211. Snap-fit ​​hole; 212. Welding hole; 213. Connecting hole; 22. Output electrode;

[0032] 3. Data acquisition unit; 31. Voltage data acquisition unit; 32. Temperature data acquisition unit; 321. Data acquisition motherboard; 322. Thermistor chip; 323. Nickel sheet; 3231. Bending part; 3232. Protrusion;

[0033] 4. Branch wiring; 41. Second conductor; 411. Fuse section;

[0034] 5. Connectors;

[0035] 6. Pallet. Detailed Implementation

[0036] The following will refer to the appendices in the embodiments of this application. Figure 1 To be continued Figure 5 The technical solutions in the embodiments of this application are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0037] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0038] In addition, the descriptions involving "first", "second", etc. in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0039] As shown in Figure 1 、 Figure 2 a low-cost integrated busbar, the integrated busbar comprising a collection busbar, a plurality of connection buses 2 and a plurality of collectors 3. The plurality of connection buses 2 are arranged in two columns on both sides of the collection busbar for connecting battery monomers. The plurality of collectors 3 are arranged on the connection buses 2. The collection busbar comprises an electronic busbar 1 and a plurality of branch busbars 4, the electronic busbar 1 being arranged between the two columns of connection buses 2, each branch busbar 4 being arranged in two columns on both sides of the electronic busbar 1, a first end of each branch busbar 4 being connected to the electronic busbar 1, and a second end of each branch busbar 4 being connected to the collector 3.

[0040] For the electronic busbar 1, specifically, the electronic busbar 1 comprises a plurality of first conductive wires 11 connected side by side, the first conductive wire 11 comprising a first insulating layer and a wire core, and the first insulating layers of adjacent first conductive wires 11 being connected together. For the production process of the electronic busbar 1, generally, the electronic busbar 1 can be processed by extrusion molding equipment and process, a plurality of first conductive wires 11 are extruded side by side, and the first insulating layers on adjacent first conductive wires 11 are extruded in a state of adhesion, so that the first insulating layers of adjacent first conductive wires 11 are connected together to form a plurality of first conductive wires 11 connected side by side, thereby processing the electronic busbar. Therefore, compared with the complex process involved in FPC, the electronic busbar 1 has a lower production cost. In the present embodiment, the integrated busbar mainly comprises a collection busbar with the electronic busbar 1 as the main busbar, which can effectively reduce the production cost of the collection busbar, and can make the integrated busbar have a lower production cost.

[0041] In some embodiments of the branch busbar, the branch busbar is a FIC (Fuse Inside Cable) busbar, and the FIC busbar is provided with a fuse section 411. Specifically, the FIC busbar comprises two second insulating layers and at least one second conductive wire 41, the cross section of the second conductive wire 41 is flat, and when the number of the second conductive wire 41 is multiple, the multiple second conductive wires 41 are arranged side by side with intervals. The two second insulating layers cover the second conductive wire 41 from top to bottom, and the two layers of second insulating layers are fused together. For the second insulating layer, it can be a PE film (polyethylene film) or a PI film (polyimide film).

[0042] The FIC wire has a fuse section 411, specifically, at least one of the second wires 41 has a fuse section 411. When the number of the second wires 41 is one, the second wire 41 has a fuse section 411, and when the number of the second wires 41 is more than one, at least one of the second wires 41 has a fuse section 411.

[0043] For the fuse section 411, in some possible embodiments, the width of the fuse section 411 is smaller than that of the non-fuse section 411, for example, by cutting the second wire 41 in the feeding process to reduce the cross-sectional area. In other embodiments of the fuse section 411, the fuse section 411 has a hollow structure for reducing the cross-sectional area, which includes holes, grooves, etc., specifically, a punching device is used to punch the hollow structure on the second wire 41 in the feeding process.

[0044] Further, as shown in Figure 1 、 Figure 2 , the integrated busbar also includes a connector 5 connected with the electronic wire 1. The connector 5 is a connection structure for external output, which can be quickly connected to speed up the equipment.

[0045] As shown in Figure 2 , for the collector 3, specifically, the collector 3 includes a plurality of voltage collectors 31 and a plurality of temperature collectors 32. The voltage collector 31 is used to collect the voltage on the connection bus 2, and the temperature collector 32 is used to collect the temperature on the connection bus 2, so that the integrated busbar can accurately know the temperature and voltage conditions inside the battery pack, which is convenient for timely and accurate monitoring of the internal state and ensures the safety of use.

[0046] In some embodiments of the voltage collector 31, the voltage collector 31 is specifically a nickel sheet terminal, more specifically a Z-shaped structure, that is, when the nickel sheet terminal is not bent and welded, the whole is approximately Z-shaped.

[0047] In some embodiments of the temperature collector 32, as shown in Figure 3 、 Figure 4 、 Figure 5 , the connection bus 2 has a clamping hole 211. The temperature collector 32 includes a collection mainboard 321, a thermosensitive chip 322 and a nickel sheet 323. The collection mainboard 321 is arranged on the connection bus 2, and the collection mainboard 321 has three connection terminals, including a positive terminal, a negative terminal and a ground terminal. The branch wire 4 connected with the temperature collector 32 has three second wires 41, and the three second wires 41 extend to the temperature collector 32 at the same time, and the three second wires 41 are connected with the positive terminal, the negative terminal and the ground terminal respectively.

[0048] The thermal sensitive chip 322 is arranged on the collecting main plate 321, and the thermal sensitive chip 322 abuts against the connecting row 2, so that the thermal sensitive chip 322 senses the temperature on the connecting row 2 to generate an electric signal.

[0049] One end of the nickel sheet 323 is connected with the collecting main plate 321, and the other end of the nickel sheet 323 has a bending part 3231 which is clamped into the clamping hole 211. The nickel sheet 323 can be a structure for fixing the collecting main plate 321 on the connecting row 2. Of course, the collecting main plate 321 can be fixed on the connecting row 2 with adhesive, and the nickel sheet 323 has an auxiliary fixing structure in addition to its temperature collecting and voltage collecting functions. Specifically, it is a positioning structure before the collecting main plate 321 is fixed on the connecting row 2, and an auxiliary reinforcing structure after the collecting main plate 321 is fixed on the connecting row 2.

[0050] The collecting main plate 321 is fixed on the connecting row 2 with adhesive, specifically, heat-conducting adhesive is used to fix the collecting main plate 321 on the connecting row 2. The thermal sensitive chip 322 passes through the collecting main plate 321, and the heat-conducting adhesive bonds the bottom of the thermal sensitive chip 322 to the connecting row 2. The heat-conducting adhesive is used to fix the collecting main plate 321 and to transfer heat on the connecting row 2 to the thermal sensitive chip 322.

[0051] Further, as shown in Figure 3 The side of the bending part 3231 is provided with a protrusion 3232, which increases the pressure between the bending part 3231 and the clamping hole 211 and enhances the clamping strength between the bending part 3231 and the clamping hole 211.

[0052] For the connecting row 2, the connecting row 2 includes a plurality of series connecting rows 21 and two output pole sheets 22. The series connecting row 21 is an aluminum row or a copper row, and the output pole sheet 22 is an aluminum sheet or a copper sheet.

[0053] For the arrangement mode of the connecting row 2, specifically, the connecting row 2 is arranged in two columns, and the two output pole sheets 22 are located at the two ends of one column of connecting rows 2 or at the ends of the two columns of connecting rows 2.

[0054] For the arrangement mode of the nickel sheet, it includes horizontal arrangement of the nickel sheet and vertical arrangement of the nickel sheet. As shown in Figure 3 In the vertical arrangement of the nickel sheet, the branch row 4, the collecting main plate 321 and the nickel sheet 323 are arranged in a straight line. As shown in Figure 4 In the horizontal arrangement of the nickel sheet, the collecting main plate 321 and the nickel sheet 323 are perpendicular to each other.

[0055] In some embodiments of the integrated busbar, as shown in Figure 2As shown, the integrated busbar further comprises a tray 6, and the tray 6 is provided with a plurality of first openings corresponding to the electrodes of the battery cells. The series busbar 21 is fixed on the tray 6, and the two ends of the series busbar 21 are welded with the electrodes of two adjacent battery cells.

[0056] Specifically, the tray 6 is in the form of a flat plate, so that the tray 6 has a minimalist structure, thereby reducing the production cost of the tray 6 and further reducing the overall cost of the integrated busbar.

[0057] For the series busbar 21 placed on the tray 6, the two ends of the series busbar 21 are provided with welding holes 212 and connecting holes 213, and the series busbar 21 is welded with the electrodes of the battery cells at the welding holes 212 and is fixedly connected with the tray 6 at the connecting holes 213.

[0058] Of course, in order to improve the convenience during assembly, the tray 6 is provided with two rows of positioning grooves. The two rows of connecting busbars 2 are placed in the two rows of positioning grooves. Through the positioning grooves, the series busbar 21 and the output tab 22 can be accurately positioned during assembly, thereby accelerating the production efficiency.

[0059] During the assembly of the series busbar 21, the glue dispensing method can be used to dispense glue in the connecting holes 213, so as to glue the series busbar 21 in the positioning groove. Of course, positioning posts can also be provided on the tray 6, and the upper ends of the positioning posts protrude from the series busbar 21, and the series busbar 21 is fixed in the positioning groove by the hot melting of the positioning posts.

[0060] The above-mentioned embodiments are only preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application. Any non-essential changes and replacements made by those skilled in the art on the basis of the present application shall fall within the scope of protection of the present application.

Claims

1. A low-cost integrated busbar, characterized in that, The integrated busbar includes a data acquisition cable, multiple connection bars, and multiple data acquisition units; Multiple connecting rows are arranged in two columns on both sides of the acquisition cable for connecting individual battery cells; Multiple collectors are mounted on the connection bar; The acquisition cable includes an electronic cable and several branch cables. The electronic cable is arranged between two columns of the connecting cable, and the several branch cables are arranged in two columns on both sides of the electronic cable. The first end of each branch cable is connected to the electronic cable, and the second end of each branch cable is connected to the acquisition device.

2. The low-cost integrated busbar as described in claim 1, characterized in that, The branch cable is a FIC cable, and the FIC cable has a fuse section inside.

3. The low-cost integrated busbar as described in claim 1, characterized in that, The integrated busbar also includes a connector that is connected to an electronic flat cable.

4. The low-cost integrated busbar as described in claim 1, characterized in that, The data acquisition unit includes multiple voltage data acquisition units and multiple temperature data acquisition units.

5. The low-cost integrated busbar as described in claim 4, characterized in that, The voltage acquisition device is a nickel-plated terminal.

6. The low-cost integrated busbar as described in claim 4, characterized in that, The connecting bar is provided with snap-fit ​​holes; The temperature acquisition device includes a main board, a thermistor chip, and a nickel plate. The main board is mounted on the connector bar, the thermistor chip is mounted on the main board, one end of the nickel plate is connected to the main board, and the other end of the nickel plate has a bent portion that is inserted into the snap-fit ​​hole.

7. The low-cost integrated busbar as described in claim 6, characterized in that, The connection bar includes multiple series bars and two output electrodes; The connecting bars are arranged in two columns, with the two output electrodes located at both ends of one column of the connecting bars, or at the ends of both columns of the connecting bars respectively.

8. The low-cost integrated busbar as described in claim 7, characterized in that, The integrated busbar also includes a tray, on which a plurality of first openings are provided corresponding to the electrodes of the battery cell; The series busbar is fixed on the tray, and the electrodes of two adjacent battery cells are welded to each end of the series busbar.

9. The low-cost integrated busbar as described in claim 8, characterized in that, Both ends of the series busbar are provided with welding holes and connection holes. The series busbar is welded to the electrode of the battery cell at the welding holes and fixedly connected to the tray at the connection holes.

10. The low-cost integrated busbar as described in claim 8 or 9, characterized in that, The tray is provided with two rows of positioning slots; The two columns of connecting bars are respectively placed in the two columns of positioning slots.

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