Battery wire harness assembly and battery pack

Abstract

The utility model provides a battery wire harness assembly which comprises a tray arranged above a shell and detachably connected with the shell, the upper surface of the tray is provided with a wire clamping groove and a first receding opening, and the projection of the first receding opening falls in the upper surface of a battery cell in the vertical direction; the partition plate is arranged above the tray and detachably connected with the tray, an output interface and a second abdicating opening are formed in the upper portion of the partition plate, and the output interface is used for charging and discharging the battery module and communicating with the outside; the information wire harness comprises an acquisition end and a feedback end, the information wire harness is partially clamped in the wire clamping groove, and the acquisition end penetrates through the first abdicating opening to be connected with the battery cell; the feedback end passes through the second abdicating port and is electrically connected with the output interface. The power wire harness is detachably arranged on the upper surface of the partition plate, one end of the power wire harness is electrically connected with the electrode of the battery module, and the other end of the power wire harness is electrically connected with the output interface. According to the utility model, the wiring harness of the battery module can be arranged in order, and the assembly efficiency is improved. The utility model further provides a battery pack.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicle battery applications, and particularly relates to a battery wire harness assembly and a battery pack. Background Art

[0002] With the rapid improvement of new energy power battery technology, battery packs made of lithium batteries have gradually replaced lead-acid batteries as the power source of electric two-wheel vehicles. Compared with lead-acid batteries, battery packs have the advantages of small volume, high capacity, and many charge and discharge cycles, so they are gradually favored by electric vehicle consumers.

[0003] However, in the prior art, the wire harness routing in the battery pack is messy, and the line interference between the power wire harness and the information wire harness is obvious. When an operator assembles the battery pack, it is necessary to sort out the lines and identify the connection ends of the lines, and then pull the connection ends of the lines to the connection points for connection, which greatly reduces the assembly efficiency of the battery module. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the technical problem of messy wire harness routing in the battery pack. The utility model provides a battery wire harness assembly and a battery pack, which can make the wire harness routing in the battery pack regular and improve the assembly efficiency.

[0005] To solve the above technical problem, an embodiment of the utility model provides a battery wire harness assembly for a battery module. The battery module includes a housing and a plurality of battery cells arranged in the housing. The battery wire harness assembly includes:

[0006] A tray is arranged above the housing and is detachably connected to the housing. A wire groove and a first relief opening are arranged on the upper surface of the tray. Along the vertical direction, the projection of the first relief opening falls within the upper surface of the battery cell.

[0007] A partition is arranged above the tray and is detachably connected to the tray. An output interface and a second relief opening are arranged above the partition. The output interface is used for charging, discharging and communicating with the outside of the battery module.

[0008] An information wire harness includes a collection end and a feedback end. The information wire harness is partially clamped in the wire groove. The collection end passes through the first relief opening and is connected to the battery cell. The feedback end passes through the second relief opening and is electrically connected to the output interface.

[0009] A power wire harness is detachably arranged on the upper surface of the partition. One end of the power wire harness is electrically connected to the electrode of the battery module, and the other end is electrically connected to the output interface.

[0010] Optionally, the information wire harness includes a plurality of voltage collection lines, and the number of voltage collection lines is equal to the number of battery cells. Electric collection terminals are arranged at the ends of the voltage collection lines at the collection end, and the electric collection terminals are electrically connected to the series pole pieces of the battery cells one by one.

[0011] Optionally, the information wire harness further includes a plurality of temperature acquisition wires, and temperature acquisition terminals are provided at the ends of the acquisition ends of the temperature acquisition wires; temperature sensors are provided on the outer shells of some of the battery cells, and the temperature acquisition terminals are electrically connected to the temperature sensors in a one-to-one correspondence.

[0012] Optionally, the first relief opening includes an electrical acquisition relief opening and a temperature acquisition relief opening; along the vertical direction, the projection of the electrical acquisition relief opening falls on the series electrode plate, and the projection of the temperature acquisition relief opening falls on the temperature sensor.

[0013] Optionally, the power wire harness includes a high-voltage positive wire and a high-voltage negative wire. One end of the high-voltage positive wire is electrically connected to the positive electrode of the battery module, and the other end is electrically connected to the output interface. One end of the high-voltage negative wire is electrically connected to the negative electrode of the battery module, and the other end is electrically connected to the output interface.

[0014] Optionally, both the high-voltage positive wire and the high-voltage negative wire are made of a silicone multi-core cable, and their insulating outer layers are silicone rubber, and a fuse is connected in series on the high-voltage positive wire.

[0015] Optionally, a protection board is provided on the partition board, and a power management circuit, a voltage acquisition circuit, and a temperature acquisition circuit are provided inside the protection board. The power management circuit is connected in series on the high-voltage negative wire, the voltage acquisition circuit is connected in series on the voltage acquisition wire, and the temperature acquisition circuit is connected in series on the temperature acquisition wire.

[0016] Optionally, the power management circuit includes a power input end and a power output end. The high-voltage negative wire includes a first negative wire and a second negative wire. The first negative wire is used to electrically connect the negative electrode of the battery module and the power input end, and the second negative wire is used to connect the power output wire and the output interface.

[0017] Optionally, the protection board is provided with an acquisition interface and a communication interface. The acquisition interface is used to receive the electrical signals from the temperature acquisition terminals and the electrical acquisition terminals, and the communication interface is used to output the information output by the temperature acquisition circuit and the voltage acquisition circuit; temperature pins and voltage pins are provided in both the acquisition interface and the communication interface. The input end and the output end of the temperature acquisition circuit are respectively electrically connected to the temperature pins of the acquisition interface and the communication interface, and the input end and the output end of the voltage acquisition circuit are respectively electrically connected to the voltage pins of the acquisition interface and the communication interface.

[0018] Optionally, for any of the aforementioned battery wire harness assemblies, the second relief opening is a notch provided at the edge of the partition board, and the information wire harness extends from below the partition board through the notch to above the partition board; a plurality of buckles are provided on the upper surface of the partition board, and the buckles are used to clamp and fix the information wire harness between the notch and the output interface.

[0019] Compared with the prior art, the present utility model has the following beneficial effects:

[0020] The implementation method of the utility model sets a tray above the battery module, fixes the information harness in the card slot of the tray, and connects the collection end of the information harness to the battery cell through the first clearance port, so that the routing path of the information harness and the positions of its collection end and feedback end can be fixed, making the routing regular. It is convenient for operators to quickly identify the collection end and feedback end of the information harness, and quickly connect the collection end to the chip and the feedback end to the output interface, thereby improving production efficiency. By setting a partition above the tray and setting the power harness above the partition, the power harness can be isolated from the information harness, avoiding short circuits between the power harness and the information harness during installation, reducing the failure rate, and thus improving the assembly efficiency of the battery module. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of wiring arrangement of a wiring harness assembly provided by an embodiment of the utility model is shown;

[0022] Figure 2 A perspective view of a wiring harness assembly provided by an embodiment of the utility model is shown;

[0023] Figure 3 The following is a diagram showing the installation effect of a wiring harness assembly provided by an embodiment of the utility model.

[0024] Reference numerals:

[0025] 1. Battery module, 2. Shell, 3. Battery cell, 4. Tray, 5. Wire slot, 6. First clearance port, 7. Partition, 8. Output interface, 9. Second clearance port, 10. Information harness, 11. Collection end, 12. Feedback end, 13. Power harness, 14. Voltage collection line, 15. Electric collection terminal, 16. Series electrode, 17. Temperature collection line, 18. Temperature collection terminal, 19. Temperature sensor, 20. Electric collection clearance port, 21. Temperature collection clearance port, 22. High-voltage positive line, 23. High-voltage negative line, 24. Positive electrode, 25. Negative electrode, 26. Fuse, 27. Protection board, 28. Collection interface, 29. Communication interface, 30. Buckle, 31. First positive line, 32. Second positive line, 33. First negative line, 34. Second negative line, 35. First information line, 36. Second information line. DETAILED DESCRIPTION

[0026] The following describes the implementation manners of the present utility model by specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. Although the description of the present utility model will be introduced in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this implementation manner. On the contrary, the purpose of introducing the utility model in conjunction with the implementation manner is to cover other alternatives or modifications that may extend based on the claims of the present utility model. In order to provide a deep understanding of the present utility model, many specific details will be included in the following description. The present utility model can also be implemented without these details. In addition, in order to avoid confusing or obscuring the key points of the present utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0027] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0028] In the description of this embodiment, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0029] The terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0030] In the description of this embodiment, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this embodiment can be understood according to specific situations.

[0031] To make the purpose, technical solutions and advantages of the present utility model clearer, the implementation manners of the present utility model will be further described in detail below with reference to the drawings.

[0032] The implementation manner of the present utility model provides a battery harness assembly for a battery module 1. The battery module 1 includes a housing 2 and a plurality of battery cells 3 disposed inside the housing 2 (such asFigure 3 as shown in Figures 1 to 3 As shown, the battery harness assembly includes a tray 4, a partition 7, an information harness 10, and a power harness 13. Among them, the tray 4 is disposed above the housing 2 and is detachably connected to the housing 2. The upper surface of the tray 4 is provided with a wire slot 5 and a first relief opening 6. Along the vertical direction, the projection of the first relief opening 6 falls within the upper surface of the battery cell 3. The partition 7 is disposed above the tray 4 and is detachably connected to the tray 4. An output interface 8 and a second relief opening 9 are provided above the partition 7. The output interface 8 is used for charging, discharging, and communicating with the outside of the battery module 1. The information harness 10 includes a collection end 11 and a feedback end 12. The information harness 10 is partially snapped into the wire slot 5. The collection end 11 passes through the first relief opening 6 and is connected to the battery cell 3; the feedback end 12 passes through the second relief opening 9 and is electrically connected to the output interface 8. The power harness 13 is detachably disposed on the upper surface of the partition 7. One end of the power harness 13 is electrically connected to the electrode of the battery module 1, and the other end is electrically connected to the output interface 8 for charging and discharging the battery module 1.

[0033] With the above technical solution, a tray 4 is provided above the battery module 1, the information harness 10 is fixed in the card slot of the tray 4, and the collection end 11 of the information harness 10 passes through the first relief opening 6 and is connected to the battery cell 3, which can fix the routing path of the information harness 10 and the positions of its collection end 11 and feedback end 12, making the wiring regular. It is convenient for the operator to quickly identify the collection end 11 and the feedback end 12 of the information harness 10, and quickly connect the collection end 11 to the chip and the feedback end 12 to the output interface 8, improving production efficiency. By providing a partition 7 above the tray 4 and arranging the power harness 13 above the partition 7, the power harness 13 can be isolated from the information harness 10, avoiding a short circuit between the power harness 13 and the information harness 10 during the installation process, reducing the failure rate, and thus improving the assembly efficiency of the battery module 1. In addition, fixing the power harness 13 and the information harness 10 on the partition 7 and the tray 4 respectively, detachably connecting the partition 7 and the tray 4, and connecting the feedback ends 12 of the power harness 13 and the information harness 10 to the output interface 8 can avoid the messy routing of the power harness 13 and the information harness 10, reduce the space occupied by the power harness 13 and the information harness 10, and is beneficial to the miniaturization of the battery module 1. More storage space is saved for the electric vehicle.

[0034] Furthermore, as Figure 1As shown, the information wire harness 10 includes a plurality of voltage acquisition lines 14, and the number of voltage acquisition lines 14 is equal to the number of battery cells 3; electrical acquisition terminals 15 are provided at the ends of the voltage acquisition lines 14 located at the acquisition end 11, and each electrical acquisition terminal 15 is electrically connected to the series pole piece 16 of each battery cell 3 in a one-to-one correspondence, and the feedback ends 12 of each voltage sampling line are all connected to the output interface 8. Specifically, the number of voltage sampling lines and battery cells 3 is 23 each, and the 23 battery cells 3 are arranged in 3 columns in the housing 2. The corresponding voltage sampling lines are also divided into 3 columns and routed along the arrangement direction of the battery cells 3.

[0035] Further, as Figure 1 shown, the information wire harness 10 further includes a plurality of temperature acquisition lines 17, and temperature acquisition terminals 18 are provided at the ends of the temperature acquisition lines 17 located at the acquisition end 11; temperature sensors 19 are provided on the outer shells of some of the battery cells 3, and each temperature acquisition terminal 18 is electrically connected to each temperature sensor 19 in a one-to-one correspondence, and the feedback ends 12 of each stable sampling line are all connected to the output interface 8. Specifically, the number of temperature sensors 19 is 3, each column of battery cells 3 corresponds to one temperature sensor 19, and the temperature value collected by the temperature sensor 19 represents the temperature sampling value of that column of battery cells 3.

[0036] Further, as Figure 3 shown, the first relief opening 6 includes an electrical acquisition relief opening 20 and a temperature acquisition relief opening 21; along the vertical direction, the projection of the electrical acquisition relief opening 20 falls on the series pole piece 16, facilitating the electrical acquisition terminal 15 to pass through the electrical acquisition relief opening 20 and be connected to the battery cell 3 below. The projection of the temperature acquisition relief opening 21 falls on the temperature sensor 19, facilitating the temperature acquisition terminal 18 to pass through the temperature acquisition relief opening 21 and be connected to the temperature sensor 19 below.

[0037] Further, as Figures 1 to 3 shown, the power wire harness 13 includes a high-voltage positive line 22 and a high-voltage negative line 23. One end of the high-voltage positive line 22 is electrically connected to the positive electrode 24 of the battery module 1, and the other end is electrically connected to the output interface 8. One end of the high-voltage negative line 23 is electrically connected to the negative electrode 25 of the battery module 1, and the other end is electrically connected to the output interface 8. Specifically, the power wire harness 13 is used to input electrical energy into the battery module 1 during the charging process and to output electrical energy to external electrical appliances during the discharging process.

[0038] Further, both the high-voltage positive line 22 and the high-voltage negative line 23 are made of silicone multi-core cables, and their insulating outer layers are silicone rubber. Since the diameter of the power wire harness 13 is relatively large, using silicone rubber as its insulating outer layer can prevent the power wire harness 13 from being difficult to bend due to the relatively large hardness of the insulating outer layer. A fuse 26 is connected in series on the high-voltage positive line 22, as Figures 1 to 3As shown in the figure, the high-voltage positive line 22 includes a first positive line and a second positive line arranged in sequence along the power output direction. One end of the first positive line is connected to the positive electrode 24 of the battery module 1, and the other end is connected to the fuse 26; one end of the second positive line is connected to the fuse 26, and the other end is connected to the output interface 8. When outputting electric energy to the outside, the current sequentially passes through the positive electrode 24 of the battery module 1, the first positive line, the fuse 26, the second positive line, and the positive electrode 24 on the output interface 8.

[0039] Further, as Figure 2 shown in the figure, a protection board 27 is provided on the partition board 7, and a power management circuit, a voltage acquisition circuit, and a temperature acquisition circuit are provided inside the protection board 27. Among them, the power management circuit is connected in series on the high-voltage negative line 23. Specifically, the power management circuit includes a power input terminal and a power output terminal. The high-voltage negative line 23 includes a first negative line and a second negative line arranged in sequence along the power output direction. The first negative line is used to electrically connect the negative electrode 25 of the battery module 1 and the power input terminal, and the second negative line is used to connect the power output line and the output interface 8. The voltage acquisition circuit is connected in series on the voltage acquisition line 14. The voltage acquisition circuit includes a voltage input terminal and a voltage output terminal. The voltage input terminal is used to input a voltage analog signal to the voltage acquisition circuit, and the voltage output terminal is used to output a voltage digital signal. The temperature acquisition circuit is connected in series on the temperature acquisition line 17. The temperature acquisition circuit includes a temperature input terminal and a temperature output terminal. The temperature input terminal is used to input a temperature analog signal to the temperature acquisition circuit, and the temperature output terminal is used to output a temperature digital signal. Specifically, the information wire harness 10 includes a first information line 35 and a second information line 36 arranged in sequence along the information output direction. The voltage sampling line includes a first voltage line and a second voltage line arranged in sequence along the voltage information output direction. Among them, the first information line 35 includes a first voltage line and a first temperature line, and the second information line 36 includes a second voltage line and a second temperature line. One end of the first voltage line is connected to the battery cell 3, and the other end is connected to the input terminal of the voltage acquisition circuit. One end of the second voltage line is connected to the voltage output terminal, and the other end is connected to the output interface 8. When collecting the voltage of the battery cell 3, the voltage signal sequentially flows through the series electrode piece 16, the voltage acquisition terminal 15, the first voltage line, the voltage acquisition circuit, the second voltage line, and the voltage signal output pin on the output interface 8. One end of the first temperature line is connected to the temperature sensor 19, and the other end is connected to the input terminal of the temperature acquisition circuit. One end of the second temperature line is connected to the temperature output terminal, and the other end is connected to the output interface 8. When collecting the temperature of the battery cell 3, the temperature signal sequentially flows through the temperature sensor 19, the temperature acquisition terminal 18, the first temperature line, the temperature acquisition circuit, the second temperature line, and the temperature signal output pin on the output interface 8.

[0040] Further, a collection interface 28 and a communication interface 29 are provided on the protection board 27 (as Figure 2 and Figure 3As shown in the figure, the acquisition interface 28 is used to receive the temperature analog signal from the temperature acquisition terminal 18 and the voltage analog signal from the voltage acquisition terminal 15, and the communication interface 29 is used to output the temperature digital signal output by the temperature acquisition circuit and the voltage digital signal output by the voltage acquisition circuit. Temperature pins and voltage pins are provided in both the acquisition interface 28 and the communication interface 29. The temperature input terminal and the temperature output terminal are electrically connected to the temperature pins of the acquisition interface 28 and the communication interface 29 respectively, and the voltage input terminal and the voltage output terminal are electrically connected to the voltage pins of the acquisition interface 28 and the communication interface 29 respectively. The output end of the first voltage line is connected to the voltage pin of the acquisition interface 28, and the input end of the second voltage line is connected to the voltage pin of the communication interface 29. The output end of the first temperature line is connected to the temperature pin of the acquisition interface 28, and the input end of the second temperature line is connected to the temperature pin of the communication interface 29.

[0041] Furthermore, as Figure 2 shown, the second relief opening 9 is a notch provided at the edge of the partition 7, and the information wire harness 10 extends from below the partition 7 through the notch to above the partition 7; a plurality of buckles 30 are provided on the upper surface of the partition 7, and the buckles 30 are used to clamp and fix the information wire harness 10 between the notch and the output interface 8. By providing the second relief opening 9 and the buckles 30, it is convenient to integrate the partition 7 and the information wire harness 10, and it is convenient for the operator to assemble the wire harness assembly with the battery module 1.

[0042] Although the present invention has been illustrated and described by referring to some preferred embodiments of the present invention, those of ordinary skill in the art should understand that the above content is a further detailed description of the present invention in combination with specific embodiments, and it cannot be determined that the specific implementation of the present invention is only limited to these descriptions. Those skilled in the art can make various changes in form and detail, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A battery harness assembly for a battery module, the battery module including a housing and a plurality of battery cells disposed within the housing, characterized in that, The battery harness assembly includes: A tray, which is disposed on the surface of the housing and is detachably connected to the housing. The upper surface of the tray is provided with a wire slot and a first relief opening; A partition, which is disposed on the upper surface of the tray and is detachably connected to the tray. An output interface and a second relief opening are provided above the partition. The output interface is used for charging and discharging of the battery module and communication with the outside world; An information harness, which includes a collection end and a feedback end. The information harness is partially clamped in the wire slot. The collection end passes through the first relief opening and is connected to the battery cell; the feedback end passes through the second relief opening and is electrically connected to the output interface; A power harness, which is detachably disposed on the upper surface of the partition. One end of the power harness is electrically connected to the electrode of the battery module, and the other end is electrically connected to the output interface.

2. The battery harness assembly according to claim 1, wherein The information harness includes a plurality of voltage collection lines, and the number of the voltage collection lines is equal to the number of the battery cells; electrical collection terminals are provided at the ends of the collection ends of the voltage collection lines, and the electrical collection terminals are electrically connected to the series connection tabs of the battery cells one by one.

3. The battery harness assembly according to claim 2, characterized in that, The information harness further includes a plurality of temperature collection lines, and temperature collection terminals are provided at the ends of the collection ends of the temperature collection lines; temperature sensors are provided on the outer shells of some of the battery cells, and the temperature collection terminals are electrically connected to the temperature sensors one by one.

4. The battery harness assembly according to claim 3, characterized in that, The first relief opening includes an electrical collection relief opening and a temperature collection relief opening; the projection of the electrical collection relief opening in the vertical direction falls on the series connection tab, and the projection of the temperature collection relief opening in the vertical direction falls on the temperature sensor.

5. The battery harness assembly according to claim 4, wherein, The power harness includes a high-voltage positive line and a high-voltage negative line. One end of the high-voltage positive line is electrically connected to the positive electrode of the battery module, and the other end is electrically connected to the output interface. One end of the high-voltage negative line is electrically connected to the negative electrode of the battery module, and the other end is electrically connected to the output interface. A fuse is connected in series on the high-voltage positive line.

6. The battery harness assembly according to claim 5, characterized in that, A protection board is provided on the partition. A power management circuit, a voltage collection circuit, and a temperature collection circuit are provided inside the protection board. The power management circuit is connected in series on the high-voltage negative line. The voltage collection circuit is connected in series on the voltage collection line. The temperature collection circuit is connected in series on the temperature collection line.

7. The battery harness assembly according to claim 6, wherein The power management circuit includes a power input end and a power output end. The high-voltage negative line includes a first negative line and a second negative line. The first negative line is used for electrically connecting the negative electrode of the battery module and the power input end. The second negative line is used for connecting the power output line and the output interface.

8. The battery harness assembly according to claim 7, wherein, The protection board is provided with a collection interface and a communication interface. The collection interface is used to receive electrical signals from the temperature collection terminal and the electrical collection terminal, and the communication interface is used to output the information output by the temperature collection circuit and the voltage collection circuit; temperature pins and voltage pins are provided in both the collection interface and the communication interface. The input end and the output end of the temperature collection circuit are electrically connected to the temperature pins of the collection interface and the communication interface respectively, and the input end and the output end of the voltage collection circuit are electrically connected to the voltage pins of the collection interface and the communication interface respectively.

9. The battery harness assembly according to any one of claims 1 to 8, wherein the second relief opening is a notch provided at the edge of the partition, and the information harness extends from below the partition through the notch to above the partition; a plurality of buckles are provided on the upper surface of the partition, and the buckles are used to clamp and fix the information harness between the notch and the output interface.

10. A battery pack, characterized in that, Comprising the battery harness assembly according to any one of claims 1 to 9.

Images