Battery pack capable of saving wiring space

Abstract

The utility model discloses a battery pack capable of saving wiring space, and belongs to the technical field of battery packs. Comprising a first battery module and a fourth battery module which are arranged in a row along a first direction, a second battery module and a third battery module which are arranged in a row along the first direction, a connecting channel is arranged between the two rows, and front connecting soft plates are arranged between the first battery module and the fourth battery module and on the outer sides of the first battery module and the fourth battery module; rear connecting soft plates are arranged between the second battery module and the third battery module and on the outer sides of the second battery module and the third battery module; a connector is arranged between the front connecting soft board and the rear connecting soft board, and the front connecting soft board is further connected with a battery management system. The technical scheme has the beneficial effects that the front connecting soft board and the rear connecting soft board are communicated through the connector, and a battery management system can acquire signals of a rear module only by wiring the front connecting soft board, so that the problem of narrow wiring space in a battery pack is solved, the fault risk is reduced, and the wiring harness cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and in particular to a battery pack that saves wiring space. Background Art

[0002] As the core component of electric vehicles, batteries are the power source of the vehicle. The wiring harness in the battery pack is used as the signal transmission of the power battery, realizing the effective output of power and effective real-time monitoring of the power battery power consumption and mileage in the battery pack. The wiring harness in the battery pack is divided into high-voltage wiring harness and low-voltage wiring harness. The high-voltage wiring harness mainly provides high-voltage and strong electricity in new energy vehicles, while the low-voltage wiring harness is responsible for the function realization of the strong-electric control unit module and the transmission of related signals.

[0003] However, the existing battery pack does not have sufficient space for wiring harnesses. The limited space for wiring harnesses makes it difficult for operators to operate. The wiring harnesses are too long and the cost is high. The wiring harnesses have a small space and are bunched together. The wear and tear of the wiring harnesses can easily lead to skin breakage, which in turn causes insulation failure. Utility Model Content

[0004] The purpose of the utility model is to provide a battery pack that saves wiring space and solves the above technical problems;

[0005] A battery pack for saving wiring space, comprising:

[0006] The first battery module and the fourth battery module are arranged in a row along a first direction, the second battery module and the third battery module are arranged in a row along the first direction, a connecting channel is provided between the two rows, a front connecting soft board is provided between the first battery module and the fourth battery module and on the outer sides of the first battery module and the fourth battery module, and a rear connecting soft board is provided between the second battery module and the third battery module and on the outer sides of the second battery module and the third battery module;

[0007] A connector is provided between the front connection soft board and the rear connection soft board, and the front connection soft board is also connected to a battery management system.

[0008] Preferably, the front connection soft board includes:

[0009] A first flexible circuit board is provided between the first battery module and the fourth battery module;

[0010] A second flexible circuit board is arranged outside the first battery module;

[0011] The third flexible circuit board is arranged on the outer side of the fourth battery module.

[0012] Preferably, the rear connection soft board includes:

[0013] The fourth flexible circuit board is disposed between the second battery module and the third battery module;

[0014] The fifth flexible circuit board is disposed outside the second battery module;

[0015] The sixth flexible circuit board is disposed outside the third battery module.

[0016] Preferably, the connector is a patch cord.

[0017] Preferably, the rear connection flexible board is provided with a collection point, and the collection point is connected to the connector.

[0018] Preferably, a signal collection wire harness is provided between the front connection flexible board and the battery management system.

[0019] Preferably, the signal collection wire harness includes

[0020] A first collection wire, the input end of the first collection wire is connected to the first flexible circuit board and the second flexible circuit board, and the output end of the first collection wire is connected to the battery management system;

[0021] A second collection wire, the input end of the second collection wire is connected to the first flexible circuit board and the third flexible circuit board, and the output end of the second collection wire is connected to the battery management system.

[0022] Preferably, the first collection wire and the second collection wire are located on the same side of the battery pack.

[0023] Preferably, the third battery module and the fourth battery module are symmetrically arranged along the central axis in the length direction of the connection channel.

[0024] Preferably, the first battery module and the second battery module are symmetrically arranged along the central axis in the length direction of the connection channel.

[0025] The beneficial effects of the present invention are: by connecting the front connection flexible board and the rear connection flexible board through a connector, the battery management system only needs to wire the front connection flexible board to collect the signals of the second battery module and the third battery module, solving the problem of narrow wiring space in the battery pack, avoiding insulation problems caused by mutual wear of wire harnesses, reducing the risk of failure, shortening the length of the wire harness, and reducing the cost of the wire harness. Description of the Drawings

[0026] Figure 1 is a schematic structural diagram of a battery pack with space-saving wiring of the present invention;

[0027] Figure 2 is a connection block diagram of the present invention.

[0028] In the accompanying drawings: 1. First battery module; 2. Second battery module; 3. Third battery module; 4. Fourth battery module; 5. Front connection flexible board; 51. First flexible circuit board; 52. Second flexible circuit board; 53. Third flexible circuit board; 6. Connector; 61. First patch cord; 62. Second patch cord; 63. Third patch cord; 64. Fourth patch cord; 7. Signal acquisition wire harness; 71. First acquisition wire; 72. Second acquisition wire; 8. Battery management system; 9. Rear connection flexible board; 91. Fourth flexible circuit board; 92. Fifth flexible circuit board; 93. Sixth flexible circuit board. Detailed implementation mode

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments may be combined with each other.

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but it is not limited to the present invention.

[0032] A battery pack that saves wiring space, as Figure 1 、 Figure 2 shown, includes

[0033] The first battery module 1 and the fourth battery module 4 are arranged in a row along the first direction, the second battery module 2 and the third battery module 3 are arranged in a row along the first direction, a connection channel is provided between the two rows, front connection flexible boards 5 are provided between the first battery module 1 and the fourth battery module 4 and on the outer sides of the first battery module 1 and the fourth battery module 4, and rear connection flexible boards 9 are provided between the second battery module 2 and the third battery module 3 and on the outer sides of the second battery module 2 and the third battery module 3;

[0034] A connector 6 is provided between the front connection flexible board 5 and the rear connection flexible board 9, and the front connection flexible board 5 is also connected to the battery management system 8.

[0035] Specifically, the present utility model provides a battery pack that saves wiring space. The first battery module 1 and the fourth battery module 4 are arranged in a row along the first direction, and the second battery module 2 and the third battery module 3 are arranged in a row along the first direction. A connection channel is provided between the two rows of battery modules, and a connector 6 can be arranged through the connection channel. The front connection flexible board 5 connects the first battery module 1 and the fourth battery module 4, and the rear connection flexible board 9 connects the second battery module 2 and the third battery module 3; the connector 6 is located between the front connection flexible board 5 and the rear connection flexible board 9 to transmit electrical signals and data. Such an arrangement of rows and columns of battery modules reduces crossovers and overlaps, reduces the length of the wire harness, and makes the overall layout more compact.

[0036] By connecting the front connection flexible board 5 and the rear connection flexible board 9 through the connector 6, the battery management system 8 only needs to use a shorter wire harness to connect the front connection flexible board 5 to collect the signals of the second battery module 2 and the third battery module 3, solving the problem of limited space, improving work efficiency, without directly connecting the second battery module 2 and the third battery module 3 at the rear with a longer wire body as in the prior art, reducing the insulation problem caused by mutual abrasion of the wire harnesses, reducing the risk of failure, shortening the wire harness length, and reducing the wire harness cost.

[0037] In a preferred embodiment, the front connection flexible board 5 includes

[0038] The first flexible circuit board 51, which is arranged between the first battery module 1 and the fourth battery module 4;

[0039] The second flexible circuit board 52, which is arranged outside the first battery module 1;

[0040] The third flexible circuit board 53, which is arranged outside the fourth battery module 4;

[0041] The rear connection flexible board 9 includes

[0042] The fourth flexible circuit board 91, which is arranged between the second battery module 2 and the third battery module 3;

[0043] The fifth flexible circuit board 92, which is arranged outside the second battery module 2;

[0044] The sixth flexible circuit board 93, which is arranged outside the third battery module 3.

[0045] Specifically, the first flexible circuit board 51 is located between the first battery module 1 and the fourth battery module 4, and is used to connect these two battery modules and transmit data signals. The second flexible circuit board 52 and the third flexible circuit board 53 are respectively located outside the first battery module 1 and the fourth battery module 4, which can effectively reduce the stress on the circuit board and the space occupation, improve the compactness and reliability of the overall structure, and effectively utilize the space inside the battery module. It is possible to avoid directly leading out additional wire harnesses from inside the battery pack, thereby releasing valuable space for other components or optimizing the layout.

[0046] More specifically, the fourth flexible circuit board 91 is located between the second battery module 2 and the third battery module 3, and is responsible for connecting these two battery modules and transmitting necessary data signals. The fifth flexible circuit board 92 and the sixth flexible circuit board 93 are respectively located outside the second battery module 2 and the third battery module 3. Using FPC can reduce the length and quantity of wiring required, reduce the system complexity, and is easier to maintain and repair. The FPC connection method is generally more durable and reliable than traditional hard connections, providing a reliable signal transmission path and ensuring the accuracy and stability of the collected data.

[0047] In a preferred embodiment, the connector 6 is a patch cord.

[0048] Specifically, in this embodiment, there are four patch cords, including,

[0049] The first patch cord 61 connects the fifth flexible circuit board 92 and the second flexible circuit board 52;

[0050] The second patch cord 62 connects the fourth flexible circuit board 91 and the first flexible circuit board 51;

[0051] The third patch cord 63 connects the fourth flexible circuit board 91 and the first flexible circuit board 51;

[0052] The fourth patch cord 64 connects the sixth flexible circuit board 93 and the third flexible circuit board 53;

[0053] The rear connection flexible board 9 is provided with acquisition points, and the acquisition points are connected to the connector 6.

[0054] Through the patch cord, without the need to re - design the hardware, the acquisition points of the FPCs of the second battery module 2 and the third battery module 3 can be connected to other modules, reducing the quantity and complexity of the wiring required, thereby simplifying the system maintenance and troubleshooting process.

[0055] More specifically, by reducing the complexity of the hardware design and the cost of wiring, the patch cord can reduce the overall design and manufacturing costs. It reduces the risk of circuit failures and damages caused by traditional hard connections.

[0056] More specifically, the use of the adapter cable releases the space inside the battery pack, and connects the collection points of the second battery module 2 and the third battery module 3 to the FPCs of the first battery module 1 and the fourth battery module 4 through the adapter cable.

[0057] In a preferred embodiment, a signal collection harness 7 is provided between the front connection flexible board 5 and the battery management system 8 (BMS);

[0058] The signal collection harness 7 includes,

[0059] The first collection line 71, the input end of the first collection line 71 is connected to the first flexible circuit board 51 and the second flexible circuit board 52, and the output end of the first collection line 71 is connected to the battery management system 8;

[0060] The second collection line 72, the input end of the second collection line 72 is connected to the first flexible circuit board 51 and the third flexible circuit board 53, and the output end of the second collection line 72 is connected to the battery management system 8.

[0061] Specifically, the input end of the first collection line 71 is connected to the first flexible circuit board 51 and the second flexible circuit board 52, and the output end is connected to the battery management system 8. The input end of the second collection line 72 is connected to the first flexible circuit board 51 and the third flexible circuit board 53, and the output end is also connected to the battery management system 8. It is responsible for collecting battery voltage, current and other signals of the first battery module 1 and the fourth battery module 4. Through the first collection line 71 and the second collection line 72, important electrical signals from each battery module are transmitted to the battery management system 8 for the BMS to monitor and manage the battery status in real time. The first collection line 71 and the second collection line 72 of the BMS only need to pass through the FPC to realize the collection of the second battery module 2 and the third battery module 3, without leading a harness from the battery pack to collect, releasing the side space for the main cable.

[0062] In a preferred embodiment, the first collection line 71 and the second collection line 72 are located on the same side of the battery pack.

[0063] Specifically, considering the size, shape and arrangement of the battery cells, the collection lines are arranged on the same side to ensure that the overall performance and safety of the battery pack are not affected. By arranging the collection lines on the same side, the connection design between the battery pack and other systems can be simplified, which helps to reduce the complexity and cost of electrical connections. Ensure that while meeting the design requirements, the electrical connection structure is simplified, and electrical faults that may occur during the operation of the battery components are avoided.

[0064] More specifically, if the collection lines need to be maintained or replaced, their positions on the same side make access and operation more convenient, which can save time and reduce the risk of misoperation or faults that may be introduced during maintenance.

[0065] In a preferred embodiment, the third battery module 3 and the fourth battery module 4 are symmetrically arranged along the central axis in the length direction of the connection channel;

[0066] The first battery module 1 and the second battery module 2 are symmetrically arranged along the central axis in the length direction of the connection channel.

[0067] Specifically, by symmetrically arranging the first battery module 1 and the second battery module 2 in the length direction of the connection channel, and the symmetric arrangement of the third battery module 3 and the fourth battery module 4, a uniform distribution of the battery modules in space can be achieved, which helps to maintain the balance of weight distribution and electrical performance in the entire battery pack. The symmetric layout can also reduce the stress concentration problem of the connection channel structure during operation. By arranging the first battery module 1 and the fourth battery module 4 in a row along the first direction, and arranging the second battery module 2 and the third battery module 3 in a row along the first direction, the internal space of the battery pack can be effectively utilized, maximizing the battery density and capacity. Here, the first direction refers to arrow A. The symmetric arrangement of the third battery module 3 and the fourth battery module 4 along the central axis in the length direction of the connection channel, and the symmetric arrangement of the first battery module 1 and the second battery module 2 along the central axis in the length direction of the connection channel, helps to distribute the pressure in the mechanical load and vibration environment, improving the overall structural stability and durability.

[0068] More specifically, the symmetric arrangement of the modules can simplify the electrical wiring and connection between the battery modules, reduce the length and complexity of the wire harness, and lower the cost and maintenance complexity of system integration. It can evenly distribute the electrical and heat loads of the battery modules, reduce the safety risks that may be caused by overheating or other non-uniformities, and improve the stability and safety of the overall battery system.

[0069] Specifically, acquisition points are provided on the rear connection flexible board 9 of the second battery module 2 and the third battery module 3 of the present utility model, and the patch cord connects the acquisition points to the front connection flexible boards 5 of the first battery module 1 and the fourth battery module 4. Therefore, the first acquisition line 71 and the second acquisition line 72 of the battery management system 8 only need to collect through the front connection flexible boards 5 of the first battery module 1 and the fourth battery module 4 to achieve signal acquisition of the second battery module 2 and the third battery module 3.

[0070] In summary, the present utility model provides a battery pack that saves wiring space. By adopting the FPC method, the problems of too long wire harness length and too high cost are solved through the patch cord. By adopting the FPC method, the mutual abrasion caused by the wire harnesses being fixed in a bunch is avoided, the safety of the wire harness is improved, and there is no need to lead a wire harness from the battery pack to collect the rear modules, releasing the space on the side for the main wire, making the work efficiency higher.

[0071] The above are only the preferred embodiments of the present utility model, and do not thus limit the implementation manners and protection scope of the present utility model. For those skilled in the art, it should be realized that all the solutions obtained by equivalent substitution and obvious changes made by using the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A battery pack that saves wiring space, characterized in that, including, The first battery module (1) and the fourth battery module (4) are arranged in a row along the first direction, the second battery module (2) and the third battery module (3) are arranged in a row along the first direction, a connection channel is provided between the two rows, front connection flexible boards (5) are provided on the outer sides of the first battery module (1) and the fourth battery module (4) and between the first battery module (1) and the fourth battery module (4), and rear connection flexible boards (9) are provided on the outer sides of the second battery module (2) and the third battery module (3) and between the second battery module (2) and the third battery module (3); A connector (6) is provided between the front connection flexible board (5) and the rear connection flexible board (9), and the front connection flexible board (5) is also connected to the battery management system (8).

2. The battery pack for saving wiring space according to claim 1, characterized in that The front connection flexible board (5) includes, A first flexible circuit board (51) provided between the first battery module (1) and the fourth battery module (4); A second flexible circuit board (52) provided on the outer side of the first battery module (1); A third flexible circuit board (53) provided on the outer side of the fourth battery module (4).

3. The battery pack for saving wiring space according to claim 1, wherein The rear connection flexible board (9) includes, A fourth flexible circuit board (91) provided between the second battery module (2) and the third battery module (3); A fifth flexible circuit board (92) provided on the outer side of the second battery module (2); A sixth flexible circuit board (93) provided on the outer side of the third battery module (3).

4. The battery pack for saving wiring space according to claim 1, wherein The connector (6) is a patch cord.

5. The battery pack for saving wiring space according to claim 1, wherein Collection points are provided on the rear connection flexible board (9), and the collection points are connected to the connector (6).

6. The battery pack for saving wiring space according to claim 2, wherein, A signal collection wire harness (7) is provided between the front connection flexible board (5) and the battery management system (8).

7. The battery pack for saving wiring space according to claim 6, wherein The signal collection wire harness (7) includes, A first collection wire (71), the input end of the first collection wire (71) is connected to the first flexible circuit board (51) and the second flexible circuit board (52), and the output end of the first collection wire (71) is connected to the battery management system (8); A second collection wire (72), the input end of the second collection wire (72) is connected to the first flexible circuit board (51) and the third flexible circuit board (53), and the output end of the second collection wire (72) is connected to the battery management system (8).

8. The battery pack for saving wiring space according to claim 7, characterized in that The first collection wire (71) and the second collection wire (72) are located on the same side of the battery pack.

9. The battery pack for saving wiring space according to claim 1, characterized in that, The third battery module (3) and the fourth battery module (4) are symmetrically arranged along the central axis in the length direction of the connection channel.

10. The battery pack for saving wiring space according to claim 1, wherein The first battery module (1) and the second battery module (2) are symmetrically arranged along the central axis in the length direction of the connection channel.

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