Module collection wire harness assembly of power battery system and power battery module

Abstract

The utility model relates to a module acquisition wire harness assembly of a power battery system. The module acquisition wire harness assembly comprises a plug-in, a front acquisition unit and a back acquisition unit. One end of the front acquisition unit is electrically connected with the plug-in, and the outer surface of the end is wound with an insulating tape. The front acquisition unit comprises a front monomer voltage acquisition wire harness group and a temperature acquisition wire harness group. One end of the reverse acquisition unit is electrically connected with the plug-in, and the reverse acquisition unit comprises a reverse voltage acquisition wire harness group. Aiming at a battery pack with a small size, a cable marker at the tail part of each collection wire harness is removed, the bending radius of the wire harness can be increased, the phenomenon that a wiring terminal abrades the outer skin of the wire harness due to tension is avoided, two processes of manufacturing the cable marker and installing the cable marker in wire harness production are omitted, the production cost of the wire harness is reduced, and the production efficiency of the wire harness is improved. And the battery pack production cost is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, and in particular to a module collection harness assembly of a power battery system and a power battery module. Background Art

[0002] With the rapid improvement of new energy battery technology and its wide-ranging market promotion, lithium-ion new energy batteries are not only used in electric four-wheeled vehicles, but more and more electric two-wheeled vehicles are also using lithium-ion new energy batteries as on-board energy storage systems.

[0003] The overall size of the electric two-wheeled vehicle is small, which requires the size of the battery pack to be as small as possible. The battery pack is small in size and its internal space is small, resulting in a narrow wiring trough for the module collection harness in the battery pack. However, the number tube that identifies each collection harness has a length that is similar to the width of the wiring trough, and the collection harness requires a larger bending radius due to the number tube; but the wiring space is limited, resulting in a smaller curvature of the harness, which causes radial tension at the tail end of the harness terminal. Due to the radial tension, the surface insulation material of the harness at the terminal will be worn as the vehicle bumps. In extreme cases, the insulation layer of the harness may burn, causing the battery pack to lose control of heat and catch fire, posing a safety hazard. As the core component and power source of new energy electric two-wheeled vehicles, the safety performance of the on-board lithium-ion battery is crucial, and the internal harness safety design is particularly important. Utility Model Content

[0004] Based on this, it is necessary to provide a module collection harness assembly and a power battery module for a power battery system to address the technical problem that the battery packs currently used in electric two-wheeled vehicles are small in size and the wiring space is limited, resulting in a small curvature of the wire harness, which causes radial tension on the tail end of the wire harness terminal. Due to the radial tension, the insulation material on the surface of the wire harness at the terminal will be worn as the vehicle bumps. In extreme cases, the insulation layer of the wire harness may burn, causing thermal runaway and fire in the battery pack, posing a safety hazard.

[0005] The utility model provides a module collection harness assembly for a power battery system, which includes:

[0006] Plugins;

[0007] A front data collection unit, one end of which is electrically connected to the plug-in and the outer surface of which is wrapped with insulating tape, comprising a front cell voltage collection harness group and a temperature collection harness group; and

[0008] The back side collection unit has one end electrically connected to the plug-in, and comprises a back side voltage collection harness group.

[0009] As a further improvement of the above solution of the utility model, the front single cell voltage collection harness group includes a plurality of single cell voltage collection harnesses 1 with different lengths, and the plurality of single cell voltage collection harnesses 1 have the same color.

[0010] As a further improvement of the above scheme of the utility model, the front single cell voltage collection harness group also includes a plurality of single cell voltage collection harnesses 2 with different lengths, and a plurality of single cell voltage collection harnesses 2 have the same color, and the color and length of the single cell voltage collection harness 2 are different from those of the single cell voltage collection harness 1.

[0011] As a further improvement of the above-mentioned scheme of the utility model, the front single-cell voltage collection harness group also includes single-cell voltage collection harness three, single-cell voltage collection harness four and single-cell voltage collection harness five, the length of single-cell voltage collection harness three is less than the length of single-cell voltage collection harness four and single-cell voltage collection harness five, the single-cell voltage collection harness four and single-cell voltage collection harness five have the same length and different colors, and the single-cell voltage collection harness five has the same color as the single-cell voltage collection harness three, and the lengths of single-cell voltage collection harness three, single-cell voltage collection harness four and single-cell voltage collection harness five are all greater than the maximum lengths of single-cell voltage collection harness one and single-cell voltage collection harness two.

[0012] As a further improvement of the above-mentioned scheme of the utility model, one end of the single cell voltage collection harness 1, single cell voltage collection harness 2, single cell voltage collection harness 3, single cell voltage collection harness 4, and single cell voltage collection harness 5 are all electrically connected to the plug-in, and the other ends of the single cell voltage collection harness 1, single cell voltage collection harness 2, single cell voltage collection harness 3, single cell voltage collection harness 4, and single cell voltage collection harness 5 are respectively connected to the nickel sheet terminal 1, nickel sheet terminal 2, nickel sheet terminal 3, nickel sheet terminal 4, and nickel sheet terminal 5.

[0013] As a further improvement of the above solution of the utility model, the temperature collection harness group includes a plurality of temperature collection harnesses with different lengths, one end of each temperature collection harness is electrically connected to the plug-in and the other end thereof is connected to a temperature sensor.

[0014] As a further improvement of the above solution of the utility model, the reverse voltage collection harness group includes a plurality of single voltage collection harnesses six with different lengths, and a plurality of single voltage collection harnesses six have the same color.

[0015] As a further improvement of the above scheme of the utility model, the reverse voltage collection harness group also includes a plurality of single-cell voltage collection harnesses seven with different lengths, the plurality of single-cell voltage collection harnesses seven have the same color and the single-cell voltage collection harness seven and the single-cell voltage collection harness six have different colors.

[0016] As a further improvement of the above scheme of the utility model, one end of the single cell voltage collection harness 6 and the single cell voltage collection harness 7 are electrically connected to the plug-in, and the other ends of the single cell voltage collection harness 6 and the single cell voltage collection harness 7 are respectively connected to the nickel sheet terminal 6 and the nickel sheet terminal 7.

[0017] The utility model also provides a power battery module, which includes the module collection harness assembly of the power battery system as mentioned above.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. The utility model aims at a battery pack with a smaller size, and removes the number tube at the tail of each collection wire harness, which can increase the bending radius of the wire harness and avoid the phenomenon that the wiring terminal is worn out by the tension of the wire harness outer skin. Since two processes of producing the number tube and installing the number tube are omitted, the production cost of the wire harness is reduced, and the production cost of the battery pack is further reduced.

[0020] 2. The utility model wraps all the wiring harnesses of the front collection unit with insulating tape, so that the front collection unit and the back collection unit can be distinguished according to the insulating tape, and different wiring harnesses in the front single-cell voltage collection harness group and the back single-cell voltage collection harness group are identified by color and length, so as to confirm the installation position of each wiring harness, without identifying the number tube printing on each collection harness. The workshop operator can quickly distinguish the harness layout area according to the color, accurately locate the collection harness position according to the length, and arrange the harness, thereby improving the factory production and assembly efficiency.

[0021] 3. The utility model utilizes the symmetric characteristics of the module structure. The entire module wiring harness assembly uses only two wiring harness colors, which reduces wiring harness material management, has strong material versatility, and ensures production capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of a module collection harness assembly of a power battery system proposed in an embodiment of the utility model;

[0023] Figure 2 for Figure 1 Another perspective of the diagram;

[0024] Figure 3 for Figure 1 The enlarged schematic diagram at A in the middle;

[0025] Figure 4 for Figure 1 The enlarged schematic diagram of point B in the middle;

[0026] Figure 5 for Figure 1 The enlarged schematic diagram at C in the middle;

[0027] Figure 6 for Figure 2 The enlarged schematic diagram at D in the middle;

[0028] Figure 7 for Figure 2 Enlarged schematic diagram of point E in the middle.

[0029] Figure markings: 1. Plug-in; 2. Single cell voltage collection harness 1; 3. Single cell voltage collection harness 2; 4. Single cell voltage collection harness 3; 5. Single cell voltage collection harness 4; 6. Single cell voltage collection harness 5; 7. Nickel sheet terminal 1; 8. Nickel sheet terminal 2; 9. Nickel sheet terminal 3; 10. Nickel sheet terminal 4; 11. Nickel sheet terminal 5; 12. Temperature collection harness; 13. Single cell voltage collection harness 6; 14. Single cell voltage collection harness 7; 15. Nickel sheet terminal 6; 16. Nickel sheet terminal 7. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Example

[0032] This embodiment aims at the technical problem that the battery packs currently used in electric two-wheeled vehicles are small in size and the wiring space is limited, resulting in a small curvature of the wire harness, which causes the tail end of the wire harness terminal to be subjected to radial tension. Due to the radial tension, the surface insulation material of the wire harness at the terminal will be worn as the vehicle bumps. In extreme cases, the insulation layer of the wire harness may burn, causing thermal runaway and fire of the battery pack, which poses a safety hazard. A module collection harness assembly for a power battery system is provided. The module collection harness assembly for a power battery system provided in this embodiment eliminates the two processes of producing and installing number tubes for the wire harness, reduces the production cost of the wire harness, and further reduces the production cost of the battery pack. When used for a power battery module, there is no need to check the numbers on each number tube, and the wiring can be directly routed according to the length and color of the wire harness, which makes it more convenient and quick to arrange the wire harness, and improves the efficiency of factory production and assembly.

[0033] Reference Figure 1 , Figure 2The module collection harness assembly of the power battery system of this embodiment includes a plug-in 1 and a front collection unit and a back collection unit connected to the plug-in 1. When used in a power battery module, the front collection unit and the back collection unit of the module collection harness assembly are separated at the module input port, the front collection unit is routed to the front of the module, and the back collection unit is routed to the back of the module. The plug-in 11 is used to transmit the module monomer voltage and temperature data collected by the front collection unit and the back collection unit.

[0034] To distinguish the front collection unit from the back collection unit, an insulating tape is wrapped around one end of the front collection unit close to the plug-in 1. The front collection unit includes a front cell voltage collection harness group and a temperature collection harness 12 group, and the back collection unit includes a back cell voltage collection harness group.

[0035] Reference Figure 3-Figure 5 The front single-cell voltage collection wiring harness group includes three single-cell voltage collection wiring harnesses 1 2 , three single-cell voltage collection wiring harnesses 2 3 , a single-cell voltage collection wiring harness 3 4 , a single-cell voltage collection wiring harness 4 5 and a single-cell voltage collection wiring harness 5 6 .

[0036] One end of each single-cell voltage collection harness 2 is electrically connected to the plug-in 1 and the other end thereof is connected to a nickel sheet terminal 7. In this embodiment, the wiring directions of the ends of the three single-cell voltage collection harnesses 2 are the same, and the three single-cell voltage collection harnesses 2 have different lengths, and the three single-cell voltage collection harnesses 2 can be distinguished by their lengths. The three single-cell voltage collection harnesses 2 have the same color, and in this embodiment, the three single-cell voltage collection harnesses 2 are red.

[0037] One end of each single cell voltage collection harness 2 3 is electrically connected to the plug-in 1 and the other end thereof is connected to a nickel sheet terminal 2 8. In this embodiment, the wiring directions of the ends of the three single cell voltage collection harnesses 2 3 are the same and the wiring direction of the single cell voltage collection harness 2 3 is opposite to the wiring direction of the single cell voltage collection harness 1 2. The three nickel sheet terminals 2 8 are symmetrically arranged with the three nickel sheet terminals 1 7 about the central axis of the power battery module. In order to distinguish the single cell voltage collection harness 2 3 from the single cell voltage collection harness 1 2, the single cell voltage collection harness 2 3 is set to a different color from the single cell voltage collection harness 1 2. In this embodiment, the single cell voltage collection harness 2 3 can be green. At the same time, in order to distinguish the three single cell voltage collection harnesses 2 3, the three single cell voltage collection harnesses 2 3 have different lengths, and the three single cell voltage collection harnesses 2 3 can be distinguished by length.

[0038] The monomer voltage collection harness 3 4, the monomer voltage collection harness 4 5, and the monomer voltage collection harness 5 6 are all electrically connected to the plug-in 1, and the other ends of the monomer voltage collection harness 3 4, the monomer voltage collection harness 4 5, and the monomer voltage collection harness 5 6 are respectively connected to the nickel sheet terminal 3 9, the nickel sheet terminal 4 10, and the nickel sheet terminal 5 11. The nickel sheet terminal 4 10 and the nickel sheet terminal 5 11 are symmetrically arranged about the nickel sheet terminal 3 9. In order to distinguish the monomer voltage collection harness 3 4, the monomer voltage collection harness 4 5, and the monomer voltage collection harness 5 6, the total length of the monomer voltage collection harness 3 4 is set to be smaller than the length of the monomer voltage collection harness 4 5 and the monomer voltage collection harness 5 6. At the same time, the monomer voltage collection harness 4 5 and the monomer voltage collection harness 5 6 are set to different colors. In this embodiment, the colors of the monomer voltage collection harness 3 4 and the monomer voltage collection harness 4 5 are red, and the color of the monomer voltage collection harness 5 6 is green. In this embodiment, the lengths of the single cell voltage collection harness three 4, the single cell voltage collection harness four 5, and the single cell voltage collection harness five 6 are all greater than the maximum lengths of the single cell voltage collection harness one 2 and the single cell voltage collection harness two 3. The single cell voltage collection harness one 2, the single cell voltage collection harness two 3, the single cell voltage collection harness three 4, the single cell voltage collection harness four 5, and the single cell voltage collection harness five 6 can be distinguished by their lengths.

[0039] The temperature collection harness 12 group includes 4 temperature collection harnesses 12, and the 4 temperature collection harnesses 12 have different lengths, and the 4 temperature collection harnesses 12 can be distinguished by their lengths. One end of each temperature collection harness 12 is electrically connected to the plug-in 1 and the other end is connected to a water drop-shaped temperature sensor.

[0040] Reference Figure 6-Figure 7 The reverse side single-cell voltage collection wiring harness group includes three single-cell voltage collection wiring harnesses six 13 and three single-cell voltage collection wiring harnesses seven 14.

[0041] One end of each monomer voltage collection harness 6 13 is electrically connected to the plug-in 1 and the other end thereof is connected to a nickel sheet terminal 6 15. In this embodiment, the ends of the three monomer voltage collection harnesses 6 13 have the same routing direction, and the three monomer voltage collection harnesses 6 13 have different lengths, and the three monomer voltage collection harnesses 6 13 can be distinguished by their lengths. The three monomer voltage collection harnesses 6 13 have the same color, and in this embodiment, the three monomer voltage collection harnesses 12 are red.

[0042] One end of each single cell voltage collection harness 7 14 is electrically connected to the plug-in 1 and the other end thereof is connected to a nickel sheet terminal 7 16. In this embodiment, the wiring directions of the ends of the three single cell voltage collection harnesses 7 14 are the same and the wiring direction of the single cell voltage collection harness 7 14 is opposite to the wiring direction of the single cell voltage collection harness 6 13. The three nickel sheet terminals 7 16 are symmetrically arranged with the three nickel sheet terminals 6 15 about the central axis of the power battery module. In order to distinguish the single cell voltage collection harness 7 14 from the single cell voltage collection harness 6 13, the single cell voltage collection harness 7 14 is set to a different color from the single cell voltage collection harness 6 13. In this embodiment, the single cell voltage collection harness 7 14 can be green. At the same time, in order to distinguish the three single cell voltage collection harnesses 7 14, the three single cell voltage collection harnesses 7 14 have different lengths, and the three single cell voltage collection harnesses 7 14 can be distinguished by length.

[0043] Through the arrangement of the above structure, when the module collection harness assembly of the power battery system of this embodiment is installed on the power battery module:

[0044] The first step is to distinguish the front collection unit from the back collection unit: since one end of the front collection unit is wrapped with an insulating tape, the front collection unit can be distinguished from the back collection unit by the insulating tape;

[0045] The second step is to distinguish the temperature collection harness 12 group from the front single-cell voltage collection harness group: since a water drop-shaped temperature sensor is integrated at the end of the temperature collection harness 12, the temperature collection harness 12 can be directly selected through the temperature sensor, and the remaining harnesses belong to the front single-cell voltage collection harness group;

[0046] The third step is to distinguish the four temperature collection harnesses 12: sort the four temperature collection harnesses 12 in ascending order according to their length, and distinguish and identify the temperature sensing serial number and installation position of the temperature collection harness 12 by the length of each temperature collection harness 12;

[0047] The fourth step is to distinguish the front single-cell voltage collection harness group, and sort the harnesses of the front single-cell voltage collection harness group from large to small according to length. First, distinguish the single-cell voltage collection harness 3 4, the single-cell voltage collection harness 4 5, and the single-cell voltage collection harness 5 6, and determine their respective installation positions according to the length and color of the single-cell voltage collection harness 3 4, the single-cell voltage collection harness 4 5, and the single-cell voltage collection harness 5 6; then distinguish the single-cell voltage collection harness 1 2 and the single-cell voltage collection harness 2 3 by color, the red one is the single-cell voltage collection harness 1 2, and the green one is the single-cell voltage collection harness 2 3; then sort the three red single-cell voltage collection harness 1 2 from large to small according to length, so as to determine the installation position of each single-cell voltage collection harness 1 2; then sort the three green single-cell voltage collection harness 2 3 from large to small according to length, so as to determine the installation position of each single-cell voltage collection harness 2 3;

[0048] The fifth step is to distinguish the reverse side single-cell voltage collection harness group. First, distinguish the single-cell voltage collection harness six 13 and the single-cell voltage collection harness seven 14 by color. The red one is the single-cell voltage collection harness six 13, and the green one is the single-cell voltage collection harness seven 14. Then, sort the three red single-cell voltage collection harness six 13 from large to small according to the length, so as to determine the installation position of each single-cell voltage collection harness six 13. Then, sort the three green single-cell voltage collection harness seven 14 from large to small according to the length, so as to determine the installation position of each single-cell voltage collection harness seven 14.

[0049] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0051] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A module collection harness assembly for a power battery system, characterized in that: It includes: plugin(1); A front data collection unit, one end of which is electrically connected to the plug-in (1) and the outer surface of which is wrapped with insulating tape, comprises a front single-cell voltage collection harness group and a temperature collection harness group; as well as A back side collection unit, one end of which is electrically connected to the plug-in (1), comprises a back side voltage collection harness group.

2. The module collection harness assembly of the power battery system according to claim 1, characterized in that: The front single cell voltage collection harness group includes a plurality of single cell voltage collection harnesses (2) with different lengths, and the plurality of single cell voltage collection harnesses (2) have the same color.

3. The module collection harness assembly of the power battery system according to claim 2, characterized in that: The front single cell voltage collection harness group also includes a plurality of single cell voltage collection harnesses 2 (3) with different lengths, wherein the plurality of single cell voltage collection harnesses 2 (3) have the same color, and the color and length of the single cell voltage collection harnesses 2 (3) are different from those of the single cell voltage collection harnesses 1 (2).

4. The module collection harness assembly of the power battery system according to claim 3, characterized in that: The front single cell voltage collection harness group also includes single cell voltage collection harness three (4), single cell voltage collection harness four (5) and single cell voltage collection harness five (6). The length of single cell voltage collection harness three (4) is less than the length of single cell voltage collection harness four (5) and single cell voltage collection harness five (6). Single cell voltage collection harness four (5) and single cell voltage collection harness five (6) have the same length and different colors. Single cell voltage collection harness five (6) has the same color as single cell voltage collection harness three (4). The lengths of single cell voltage collection harness three (4), single cell voltage collection harness four (5) and single cell voltage collection harness five (6) are all greater than the maximum lengths of single cell voltage collection harness one (2) and single cell voltage collection harness two (3).

5. The module collection harness assembly of the power battery system according to claim 4, characterized in that: One end of each of the single cell voltage collection harness 1 (2), single cell voltage collection harness 2 (3), single cell voltage collection harness 3 (4), single cell voltage collection harness 4 (5), and single cell voltage collection harness 5 (6) is electrically connected to the plug-in (1), and the other end of each of the single cell voltage collection harness 1 (2), single cell voltage collection harness 2 (3), single cell voltage collection harness 3 (4), single cell voltage collection harness 4 (5), and single cell voltage collection harness 5 (6) is respectively connected to a nickel sheet terminal 1 (7), a nickel sheet terminal 2 (8), a nickel sheet terminal 3 (9), a nickel sheet terminal 4 (10), and a nickel sheet terminal 5 (11).

6. The module collection harness assembly of the power battery system according to claim 1, characterized in that: The temperature collection harness group comprises a plurality of temperature collection harnesses (12) of different lengths, one end of each temperature collection harness (12) being electrically connected to the plug-in (1) and the other end being connected to a temperature sensor.

7. The module collection harness assembly of the power battery system according to claim 1, characterized in that: The reverse voltage collection harness group includes a plurality of single voltage collection harnesses six (13) with different lengths, and a plurality of single voltage collection harnesses six (13) have the same color.

8. The module collection harness assembly of the power battery system according to claim 7, characterized in that: The reverse voltage collection harness group also includes a plurality of single-cell voltage collection harnesses seven (14) with different lengths, wherein the plurality of single-cell voltage collection harnesses seven (14) have the same color and the single-cell voltage collection harnesses seven (14) and the single-cell voltage collection harnesses six (13) have different colors.

9. The module collection harness assembly of the power battery system according to claim 8, characterized in that: One end of the single cell voltage collection harness six (13) and the single cell voltage collection harness seven (14) are both electrically connected to the plug-in (1), and the other ends of the single cell voltage collection harness six (13) and the single cell voltage collection harness seven (14) are respectively connected to the nickel sheet terminal six (15) and the nickel sheet terminal seven (16).

10. A power battery module, characterized in that: It includes a module collection harness assembly of a power battery system as described in any one of claims 1 to 9.

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