Integrated wiring harness structure and battery module

Abstract

The utility model discloses an integrated wiring harness structure and battery module relates to battery equipment technical field, above -mentioned integrated wiring harness structure is used for the electric connection of battery core, including bottom plate, apron, at least one main lead and a plurality of branch leads, the bottom plate and apron detachable connection is equipped with a plurality of independent fixed groove and the wire slot on the bottom plate, a plurality of fixed groove all with wire slot intercommunication, all install the bar piece in fixed groove, the bar piece is used for with battery core electricity, the main lead is installed in wire slot, one end of main lead is electrically connected with the wiring harness port, the wiring harness port is fixed in the bottom plate, one end of a plurality of branch leads is electrically connected with corresponding bar piece respectively, the other end of a plurality of branch leads all is electrically connected with main lead, replaces FPC board through the wire, can greatly cost, and more suitable for small -batch standardized product, and the plasticity is higher, can apply to more different battery module's customer demand.

Description

Technical Field

[0001] This utility model relates to the field of battery equipment technology, and more specifically, to an integrated wiring harness structure. Furthermore, this utility model also relates to a battery module including the aforementioned integrated wiring harness structure. Background Technology

[0002] Currently, the variety of batteries on the market has increased significantly to meet the growing and diversified demands. Because different application scenarios have varying requirements for the voltage and capacity of power batteries, this differentiated demand has directly driven the substantial expansion and refinement of lithium battery pack product lines.

[0003] Currently, FPC boards are mainly used as circuit integration components for battery module connections, but FPC boards are expensive, which increases the cost of battery modules.

[0004] In conclusion, how to reduce the production cost of integrated wire harnesses is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide an integrated wire harness structure that replaces the FPC board with wires, which can greatly reduce costs and is more suitable for small-batch standardized products.

[0006] Another objective of this invention is to provide a battery module including the aforementioned integrated wiring harness structure.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An integrated wiring harness structure for electrical connection of battery cells, comprising:

[0009] The base plate and the cover plate are detachably connected. The base plate is provided with several independent fixing grooves and wire passing grooves. The fixing grooves are all connected to the wire passing grooves. Each fixing groove is equipped with a switch plate, which is used to electrically connect to the battery cell.

[0010] At least one main line is installed in the cable tray, one end of the main line is electrically connected to a wire harness port, and the wire harness port is fixed to the base plate;

[0011] Several branch conductors, one end of each branch conductor is electrically connected to a corresponding plate, and the other end of each branch conductor is electrically connected to the main conductor.

[0012] Furthermore, in this invention, the end of the branch conductor away from the main conductor is electrically connected to a conductive connector, which is used for connection with the plate.

[0013] Furthermore, the present invention provides at least one mounting groove on the plate, so that when the connector is inserted into the mounting groove, the branch wire is electrically connected to the plate.

[0014] Furthermore, the connector is provided with a connecting portion, which is a protruding structure formed by bending the connector, and the maximum width of the protruding structure is greater than the maximum width of the mounting groove.

[0015] Furthermore, the connector is a Z-shaped bent component.

[0016] Furthermore, the connector is provided with a first fixing member at one end near the branch conductor, and the first fixing member is used to fix the branch conductor.

[0017] Furthermore, the base plate is provided with a second fixing member for fixing the main guide line.

[0018] Furthermore, the base plate is provided with a plurality of positioning holes for fixing the main guide line.

[0019] Furthermore, this invention also includes a nickel plate for collecting and a temperature-sensitive nickel plate, which are electrically connected to the electrode plate and the main conductor via branch wires.

[0020] A battery module includes the integrated wiring harness structure described in any one of the above claims, and further includes a top plate, two side plates, two end plates, and a plurality of battery cells. The two side plates and two end plates are fixedly connected to form a cavity for accommodating the plurality of battery cells. The integrated wiring harness structure is located between the top plate and the battery cells, and the top plate is fixedly connected to the two side plates.

[0021] The integrated wiring harness structure provided by this utility model has several independent fixing slots and wire-passing slots on the base plate. The battery cells' electrodes are connected to the electrodes in the fixing slots. Several battery cells are electrically connected to branch wires, and the other ends of these branch wires are electrically connected to the main wire, thus achieving electrical connection between the battery cells. One end of the main wire is electrically connected to a wiring harness port, which is fixed to the base plate. This allows the battery module to be connected to external components for charging and discharging. After the base plate and cover plate are fixedly connected, the main wire is located in the wire-passing slot, and the battery cells are located in the fixing slot, ensuring the correct positions of the main wire and battery cells and guaranteeing normal circuit operation. Therefore, this device uses wires instead of FPC boards, significantly reducing costs and making it more suitable for small-batch standardized products. It also offers greater flexibility and can meet the needs of customers with more diverse battery modules.

[0022] The battery module provided by this utility model includes the above-mentioned integrated wiring harness structure and has the above-mentioned beneficial effects. Attached Figure Description

[0023] 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 embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the integrated wire harness disassembled from the axial side provided by this utility model;

[0025] Figure 2 A top view of the integrated wire harness provided by this utility model;

[0026] Figure 3 This is a partially enlarged structural diagram of point A provided by this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the battery module housing provided by this utility model;

[0028] Figure 5 This is a structural diagram of the battery module provided by this utility model after disassembly.

[0029] Figure 6 A schematic diagram of the integrated wire harness provided by this utility model before installation;

[0030] Figure 7 This is a schematic diagram of the structure of the integrated wire harness provided by this utility model after installation.

[0031] Figures 1-7 In the accompanying drawings, the reference numerals include:

[0032] 1-Base plate; 101-Fixing groove; 102-Wire passage groove; 2-Cover plate; 3-Battery plate; 4-Main lead wire; 5-Wire harness port; 6-Branch lead wire; 7-Connector; 701-Connecting part; 8-Mounting groove; 9-First fixing part; 10-Positioning hole; 11-Collecting nickel sheet; 12-Temperature sensing nickel sheet; 13-Side plate; 14-End plate; 15-Top plate; 16-Battery cell. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] The core of this invention is to provide an integrated wire harness structure that replaces the FPC board with wires, which greatly reduces costs and is more suitable for small-batch standardized products.

[0035] Another core aspect of this invention is to provide a battery module that includes the aforementioned integrated wiring harness structure.

[0036] Please refer to Figure 2 An integrated wiring harness structure for electrical connection of a battery cell 16 includes a base plate 1, a cover plate 2, at least one main wire 4, and several branch wires 6. The base plate 1 and the cover plate 2 are detachably connected. The base plate 1 is provided with several independent fixing slots 101 and wire passage slots 102. The fixing slots 101 are all connected to the wire passage slots 102. Each fixing slot 101 is equipped with a tab 3 for electrical connection with the battery cell 16. The main wire 4 is installed in the wire passage slot 102. One end of the main wire 4 is electrically connected to a wiring harness port 5, which is fixed to the base plate 1. One end of each of the several branch wires 6 is electrically connected to a corresponding tab 3, and the other end of each of the several branch wires 6 is electrically connected to the main wire 4.

[0037] Optionally, in some embodiments, the base plate 1 is an injection molded part, supported by an integral injection molding method.

[0038] Optionally, in some embodiments, the top cover is made of injection molded material, and the top cover is detachably fixed to the base plate 1 by bolts.

[0039] In other embodiments, the upper cover and the base plate 1 are detachably connected by a snap-fit ​​method. Specifically, the upper cover is provided with a number of snap-fit ​​protrusions, and the base plate 1 is provided with a number of slots corresponding to the snap-fit ​​protrusions. The base plate 1 and the upper cover can be fixed by inserting the snap-fit ​​protrusions into the slots.

[0040] Optionally, in some embodiments, the base plate 1 is provided with a slot for fixing the wire harness port 5, and the wire harness port 5 is fixed to the base plate 1 by bolts.

[0041] Optionally, in some embodiments, the top cover is provided with a clamping layer for clamping the bar sheet 3, the main guide wire 4, and the branch guide wire 6.

[0042] In the above embodiments, the clamping layer can be made of a flexible material, specifically, it can be made of materials such as rubber or silicone to increase its clamping effect.

[0043] Optionally, in some embodiments, the fixing groove 101 is provided with a connection port for connecting the fixing groove 101 and the wire passage groove 102.

[0044] Optionally, in some embodiments, the electrode 3 is fixedly connected to the electrode of the battery cell by welding.

[0045] Optionally, in some embodiments, there are two main wires 4, located on both sides of the wire groove 102, and two rows of tabs 3 are arranged to facilitate connection with the positive and negative terminals of the battery cell 16. The two main wires 4 are electrically connected to each other, and the two rows of tabs 3 are electrically connected to the two main wires 4 respectively, which helps to reduce the length of the branch wires 6.

[0046] In use, the base plate 1 has several independent fixing slots 101 and wire passage slots 102. The electrode plates 3 are installed in the fixing slots 101 and are used to connect the electrodes of the battery cells 16. The electrode plates 3 are electrically connected to the branch wires 6 respectively, and the other end of the branch wires 6 is electrically connected to the main wire 4, so that the battery cells 16 can be electrically connected. One end of the main wire 4 is electrically connected to the wire harness port 5, which is fixed to the base plate 1. The battery module can be connected to the outside through the wire harness port 5, so as to achieve the purpose of charging and discharging. After the base plate 1 and the cover plate 2 are fixedly connected, since the main wire 4 is located in the wire passage slot 102 and the electrode plates 3 are located in the fixing slots 101, the positions of the main wire 4 and the electrode plates 3 can be fixed to ensure the normal operation of the circuit. Therefore, this device uses wires instead of FPC boards, which can greatly reduce costs and is more suitable for small-batch standardized products. It is also more flexible and can meet the needs of customers with more different battery modules.

[0047] Please refer to Figure 3 In some embodiments, the end of the branch conductor 6 away from the main conductor 4 is electrically connected to a conductive connector 7. The connector 7 is used to connect with the plate 3. By setting the connector 7, the installation efficiency between the branch conductor 6 and the plate 3 can be improved. The connector 7 can be quickly and fixedly connected to the plate 3 by welding.

[0048] Optionally, in some embodiments, the connector 7 may be made of metal, specifically aluminum or copper.

[0049] Please refer to Figure 3 In some embodiments, the bar plate 3 is provided with at least one mounting groove 8. When the connector 7 is inserted into the mounting groove 8, the branch wire 6 is electrically connected to the bar plate 3. In order to increase the connection area between the connector 7 and the bar plate 3, the mounting groove 8 can be opened on the bar plate 3 and the connector 7 can be inserted into the mounting groove 8 to increase its connection area. At the same time, during assembly, when the connector 7 is inserted into the mounting groove 8, the initial connection between the connector 7 and the bar plate 3 can be achieved, which facilitates the subsequent welding of its connection position, so as to realize the assembly line of the device and improve production efficiency.

[0050] Optionally, in some embodiments, the shape and size of the mounting groove 8 are matched with the connector 7. Specifically, when the connector 7 is a cylindrical rod structure, the mounting groove 8 is a circular hole; when the connector 7 is a sheet structure, the mounting groove 8 is a rectangular hole. The connector 7 and the mounting groove 8 are interference-fitted to increase the stability of their connection.

[0051] Optionally, in some embodiments, the connector 7 is provided with a connecting portion 701, which is a protruding structure formed by bending the connector 7. The maximum width of the protruding structure is greater than the maximum width of the mounting groove 8. That is, the connector 7 is a sheet-like structure, and the connecting portion 701 is formed on the connector 7 by bending it with a bending machine. When the connecting portion 701 is inserted into the mounting groove 8, the connector 7 and the plate 3 can be connected. Furthermore, the bending of the connector 7 gives the connecting portion 701 a certain degree of elasticity. Therefore, after the connecting portion 701 is inserted into the mounting groove 8, the stability of the connection can be greatly increased, which facilitates subsequent welding.

[0052] Please refer to Figure 3 In some embodiments, the connector 7 is a Z-shaped bend, that is, the Z-shaped bend forms a bend protrusion, and the mounting groove 8 is a rectangular structure, so that when the bend protrusion enters the mounting groove 8, its contact area can be increased to the maximum extent.

[0053] In other embodiments, the cross-section of the mounting groove 8 is a stepped structure, and the connector 7 is set as a corresponding stepped bending mechanism, which can further increase its contact area and thus improve its conductivity.

[0054] In other embodiments, the connector 7 is an arrow-shaped bent piece, and the mounting groove 8 is a corresponding arrow-shaped structure. Therefore, when the connecting part 701 of the connector 7 enters the mounting groove 8, due to the principle that the connecting part 701 is larger at the bottom and smaller at the top, the connecting part 701 cannot easily detach from the fixing groove 101, further improving the firmness between the connector 7 and the mounting groove 8, and preventing it from falling off during use.

[0055] Please refer to Figure 3 In some embodiments, the connector 7 is provided with a first fixing member 9 at one end near the branch conductor 6. The first fixing member 9 is used to fix the branch conductor 6. That is, by providing a first fixing member 9 for fixing the branch conductor 6 on the connector 7, the connection stability between the branch conductor 6 and the connector 7 is increased.

[0056] In the above embodiment, the branch conductor 6 is fixedly connected to the connector 7 by welding, and the first fastener 9 can greatly enhance its connection stability.

[0057] Optionally, in some embodiments, the first fixing member 9 is a sheet-like structure and is integrally formed with the connecting member 7. In use, the first fixing member 9 can be bent and squeezed to make it contact with the branch wire 6, thereby achieving the fixation between it and the branch wire 6.

[0058] In other embodiments, the first fixing member 9 is a bolt with a pressure plate on the top of the bolt, and the connecting member 7 has a threaded hole. By screwing the bolt into the threaded hole until the pressure plate is pressed into contact with the branch conductor 6, the branch conductor 6 and the connecting member 7 can be fixed.

[0059] Please refer to Figure 1 In some embodiments, the base plate 1 is provided with a second fastener for fixing the main guide line 4. That is, the second fastener increases the firmness of the main guide line 4 on the base plate 1, thereby improving its stability during use.

[0060] Optionally, in some embodiments, the second fastener is a bolt with a pressure plate on the top of the bolt, and the connector 7 has a threaded hole. By screwing the bolt into the threaded hole until the pressure plate is pressed into contact with the branch conductor 6, the main conductor 4 and the base plate 1 can be fixed.

[0061] In other embodiments, the second fastener is a C-shaped clip fixed to the wire groove 102, and the main wire can be clipped into the clip to achieve the requirement of fixing the main wire 4.

[0062] Please refer to Figure 1 In some embodiments, the base plate 1 is provided with a plurality of positioning holes 10 for fixing the main guide line 4. Specifically, the positioning holes 10 are arranged along the wiring position of the main guide line 4. The main guide line 4 is fixed to the base plate 1 by cable ties through the positioning holes 10, thereby further improving the firmness of the main guide line 4.

[0063] Please refer to Figure 1 In some embodiments, the method also includes collecting nickel plate 11 and temperature-sensing nickel plate 12, and electrically connecting them to bar plate 3 and main line 4 via branch wire 6, so as to collect information and temperature of battery cell 16.

[0064] A battery module includes the aforementioned integrated wiring harness structure, and further includes a top plate 15, two side plates 13, two end plates 14, and a plurality of battery cells 16. The two side plates 13 and the two end plates 14 are fixedly connected to form a cavity for accommodating the plurality of battery cells 16. The integrated wiring harness structure is located between the top plate 15 and the battery cells 16, and the top plate 15 is fixedly connected to the two side plates 13.

[0065] Optionally, in some embodiments, by changing the number and arrangement of different cells, the lithium battery module can be compatible with various capacity and voltage configurations, meeting specific voltage and capacity requirements, thus increasing the versatility and market competitiveness of the lithium battery module product. By combining multiple cells together and optimizing their design, the lithium battery module can achieve higher output power and capacity while maintaining a smaller size and weight, making it easy to carry.

[0066] Optionally, in some embodiments, among a plurality of cells arranged in a single row, an insulating sheet is provided between adjacent cells. Each cell has adhesive applied in a "Z" shape on both sides, and the insulating sheet is fixed to the middle of adjacent cells using the adhesive. Insulating sheets are also provided on the inner sides of the end plate 14 and the side plate 13; that is, insulating sheets are also fixed between the end plate 14 and the cells, and between the side plate 13 and the cells, using adhesive. In addition, insulating sheets are also fixed to the bottom of several cells using adhesive; that is, insulating sheets are adhered to the bottom of the cell integration assembly. The above-mentioned arrangement of multiple insulating sheets effectively prevents safety hazards caused by cell leakage, thereby ensuring the safety performance of the lithium battery module.

[0067] Optionally, in some embodiments, since the performance of lithium batteries is significantly affected by temperature, especially at low temperatures where the electrochemical reaction rate inside the cell decreases, leading to problems such as reduced battery capacity, decreased output power, and reduced charging efficiency, a heating film is also provided on the side plate 13 of the lithium battery module. The heating film is made by sequentially stacking a PI film and a heating chip, as well as a PI film and double-sided adhesive. Two prominent white heating film lines extend from the heating film to facilitate the installation of the control terminal wiring harness. When the lithium battery module is under low-temperature conditions, the heating film provides the necessary heat to the lithium battery module, thereby achieving a more suitable operating temperature range. Through the structural design of the heating film, the battery module's endurance and normal operating performance under low-temperature conditions are ensured, while simultaneously improving the efficiency and extending the lifespan of the lithium battery module.

[0068] In other words, the key point of this utility model is that the battery module can be connected to the outside through the wire harness port 5, thereby achieving the purpose of charging and discharging. After the base plate 1 and the cover plate 2 are fixedly connected, since the main wire 4 is located in the wire groove 102 and the plate 3 is located in the fixing groove 101, the positions of the main wire 4 and the plate 3 can be fixed to ensure normal circuit. Therefore, this device uses wires instead of FPC boards, which can greatly reduce costs and is more suitable for small-batch standardized products. It is also more flexible and can meet the needs of customers with more different battery modules.

[0069] In addition to the integrated wiring harness structure disclosed in the above embodiments, this utility model also provides a battery module including the above integrated wiring harness structure. For the structure of other parts of the battery module, please refer to the prior art, which will not be repeated here.

[0070] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0071] The integrated wiring harness structure and battery module provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. An integrated harness structure for electrical connection of a number of battery cells (16), characterized by, include: The base plate (1) and the cover plate (2) are detachably connected. The base plate (1) is provided with a wire passage groove (102) and several independent fixing grooves (101). Several fixing grooves (101) are all connected to the wire passage groove (102). Each fixing groove (101) is equipped with a switch plate (3). The switch plate (3) is used to electrically connect with the battery cell (16). At least one main line (4) is installed in the wire channel (102), one end of the main line (4) is electrically connected to a wire harness port (5), and the wire harness port (5) is fixed to the base plate (1). Several branch conductors (6), one end of each branch conductor (6) is electrically connected to the corresponding plate (3), and the other end of each branch conductor (6) is electrically connected to the main conductor (4).

2. The integrated wiring harness structure according to claim 1, characterized by, The branch conductor (6) is electrically connected to a conductive connector (7) at one end away from the main conductor (4), and the connector (7) is used to connect with the plate (3).

3. The integrated wiring harness structure of claim 2, wherein, The bar plate (3) is provided with at least one mounting groove (8). When the connector (7) is inserted into the mounting groove (8), the branch wire (6) is electrically connected to the bar plate (3).

4. The integrated wiring harness structure of claim 3, wherein, The connector (7) is provided with a connecting part (701), which is a protruding structure formed by bending the connector (7). The maximum width of the protruding structure is greater than the maximum width of the mounting groove (8).

5. The integrated wiring harness structure of claim 4, wherein, The connector (7) is a Z-shaped bent piece.

6. The integrated wiring harness structure of claim 2, wherein, The connector (7) has a first fixing member (9) at one end near the branch conductor (6), and the first fixing member (9) is used to fix the branch conductor (6).

7. The integrated wiring harness structure of claim 1, wherein, The base plate (1) is provided with a second fastener for fixing the main guide line (4).

8. The integrated wiring harness structure of claim 7, wherein, The base plate (1) is provided with a plurality of positioning holes (10) for fixing the main guide line (4).

9. The integrated wiring harness structure according to any one of claims 1 to 8, characterized by, It also includes a collecting nickel sheet (11) and a temperature-sensitive nickel sheet (12), which are electrically connected to the bar sheet (3) and the main conductor (4) via the branch conductor (6).

10. A battery module, characterized by The integrated wiring harness structure according to any one of claims 1-9 further includes a top plate (15), two side plates (13), two end plates (14) and a plurality of battery cells (16), wherein the two side plates (13) and the two end plates (14) are fixedly connected to form a cavity for accommodating the plurality of battery cells (16), the integrated wiring harness structure is located between the top plate (15) and the battery cells (16), and the top plate (15) is fixedly connected to the two side plates (13).

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