Wire harness assembly, battery pack, vehicle and electric equipment

Abstract

The utility model discloses a wire harness assembly, a battery pack, a vehicle and electric equipment. The wire harness assembly comprises a wire harness, a first insulating part and a second insulating part. The first insulating part is fixedly connected with the wire harness, and the second insulating part is fixedly connected with the first insulating part; according to the wire harness assembly, the first insulating part is wound around the wire harness in the spiral winding mode, and / or the second insulating part is wound around the first insulating part in the spiral winding mode, so that the first insulating part and / or the second insulating part can wrap the wire harness more firmly and more tightly, the wire harness is more stable, the tensile fracture resistance is higher, and the reliability of the wire harness assembly is further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of power batteries, and more particularly, to a wire harness assembly, a battery pack, a vehicle, and an electrical equipment. BACKGROUND

[0002] With the popularization and development of new energy technology, the use of battery packs is more popular and widespread. Inside the battery pack, a wire harness is usually used to electrically connect the distribution box and the battery cell inside the battery pack. In the prior art, because the cloth-based adhesive tape has good wear resistance, the wire harness inside the battery pack is usually wrapped with a cloth-based adhesive tape to avoid wear of the wire harness under the working conditions of vibration or impact of the vehicle or electrical equipment. However, when the working conditions of vibration or impact of the vehicle or electrical equipment persist, the cloth-based adhesive tape wrapped outside the wire harness is prone to wear, and the wire harness exposed to the external environment is prone to damage, which will cause interruption of the low-voltage sampling signal inside the battery pack, so that the distribution box inside the battery pack cannot collect information such as the temperature and current of the battery cell, thereby causing the risk that the state of the battery pack is uncontrollable. SUMMARY

[0003] To solve at least one problem existing in the prior art, the present application provides a wire harness assembly, a battery pack, a vehicle, and an electrical equipment.

[0004] The present application provides a wire harness applied to a battery pack, comprising at least one wire harness, and a first insulating member and a second insulating member; the first insulating member is fixedly connected with the wire harness; the second insulating member is arranged on the side of the first insulating member away from the wire harness and is fixedly connected with the first insulating member; along the length direction of the wire harness, the first insulating member is spirally wound outside the wire harness, the first insulating member has a plurality of first edges arranged at intervals, and the distance between two adjacent first edges in the length direction of the wire harness is less than the width of the first insulating member in the length direction of the wire harness; and / or, along the length direction of the wire harness, the second insulating member is spirally wound on the side of the first insulating member away from the wire harness, and the second insulating member has a plurality of second edges arranged at intervals; the distance between two adjacent second edges in the length direction of the wire harness is less than the width of the second insulating member in the length direction of the wire harness.

[0005] In some embodiments, the winding direction of the first insulating member is the same as the winding direction of the second insulating member.

[0006] In some embodiments, the wire harness comprises an end portion and a connecting portion, the end portion is adapted to be electrically connected with a connector; the connecting portion connects the end portion, and at least part of the connecting portion is wound with the first insulating member and the second insulating member.

[0007] In some embodiments, the connecting portion comprises a first part and a second part, one end of the first part is connected to the end portion, and the other end of the first part is connected to the second part; the first part is provided with a first insulating member, and the second part is provided with the first insulating member and a second insulating member.

[0008] In some embodiments, the wire harness comprises two end portions and two first parts, one end of each of the two first parts is connected to one of the two end portions, and the other end of each of the two first parts is connected to the second part.

[0009] In some embodiments, along the length direction of the wire harness, the spacing size between two adjacent first edges is greater than 1 / 10 of the width of the first insulating member in the length direction of the wire harness and less than 1 / 2 of the width of the first insulating member in the length direction of the wire harness; and / or the spacing size between two adjacent second edges is greater than 1 / 10 of the width of the second insulating member in the length direction of the wire harness and less than 1 / 2 of the width of the second insulating member in the length direction of the wire harness.

[0010] In some embodiments, the width of the first insulating member in the length direction of the wire harness is less than the length of the connecting portion; and / or the width of the second insulating member in the length direction of the wire harness is less than the length of the connecting portion.

[0011] In some embodiments, the first insulating member is a high-temperature-resistant material, and the second insulating member is a wear-resistant material.

[0012] In some embodiments, the first insulating member is a ceramic material, a PI high-temperature-resistant material, or a mica material.

[0013] In some embodiments, the second insulating member is a cloth-based material or a polyester-based material.

[0014] In some embodiments, a connector is further included, which is adapted to be connected to the wire harness.

[0015] The application also provides a battery pack comprising the wire harness assembly.

[0016] The application also provides a vehicle comprising the battery pack.

[0017] The application also provides an electrical equipment comprising the wire harness assembly.

[0018] The wire harness assembly provided by the present application stacks and winds the first insulating member and / or the second insulating member in a spiral manner on the wire harness, so that more first insulating members and / or second insulating members are covered per unit area of the wire harness, the first insulating members and / or the second insulating members can more tightly wrap the wire harness and provide better protection for the wire harness, the wire harness is more stable, and the wire harness has better tensile breaking resistance, further improving the reliability of the wire harness assembly, and the spiral winding manner for winding the first insulating member and the second insulating member is simple to operate and easy to implement, and is more suitable for production and promotion.

[0019] Additional aspects and advantages of the embodiments of the present application will be in part apparent and in part pointed out hereinafter in the description of the embodiments of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0021] Figure 1 is a schematic diagram of a wire harness assembly according to some embodiments of the present application;

[0022] Figure 2 is a schematic diagram of a cross section of a wire harness assembly according to some embodiments of the present application.

[0023] Explanation of Main Element Symbols:

[0024] 10 - wire harness assembly; 100 - wire harness; 101 - wire core; 102 - insulating layer; 110 - end portion; 120 - first portion; 130 - second portion; 200 - first insulating member; 201 - first edge; 300 - second insulating member; 301 - second edge; 400 - connector. DETAILED DESCRIPTION

[0025] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, in which the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the accompanying drawings are exemplary and are only used to explain the embodiments of the present application, and cannot be understood as limiting the embodiments of the present application.

[0026] In the prior art, a wire harness is usually used to electrically connect the distribution box and the battery cell inside the battery pack. In the prior art, since the cloth-based adhesive tape has good wear resistance, the wire harness inside the battery pack is usually wrapped or covered with the cloth-based adhesive tape to avoid wear of the wire harness under the working conditions of vibration or impact of the vehicle or the electrical equipment. However, when the working conditions of vibration or impact of the vehicle or the electrical equipment are continuous, the cloth-based adhesive tape wrapped outside the wire harness is prone to wear, and the wire harness exposed to the outside environment is prone to damage, which can cause interruption of the low-voltage sampling signal inside the battery pack, so that the distribution box inside the battery pack cannot collect information such as the temperature and current of the battery cell, thereby causing the risk of uncontrollable state of the battery pack.

[0027] To solve the above problems, the application provides a wire harness assembly 10, which comprises one or more wire harnesses 100, a first insulating member 200, and a second insulating member 300. The first insulating member 200 is fixedly connected with the wire harness 100. The second insulating member 300 is arranged on the side of the first insulating member 200 away from the wire harness 100, and the second insulating member 300 is fixedly connected with the first insulating member 200. The first insulating member 200 is spirally wound outside the wire harness 100, and the second insulating member 300 is also spirally wound on the side of the first insulating member 200 away from the wire harness 100. The first insulating member 200 has a plurality of first edges 201 arranged at intervals, and the distance L11 between two adjacent first edges 201 in the length direction X of the wire harness is less than the width L1 of the first insulating member 200 in the length direction of the wire harness. The second insulating member 300 has a plurality of second edges 301 arranged at intervals in the length direction X of the wire harness. The distance L21 between two adjacent second edges 301 in the length direction X of the wire harness is less than the width L2 of the second insulating member 300 in the length direction X of the wire harness. The stacked winding can better completely wrap the wire harness 100 with the first insulating member 200 and / or completely wrap the first insulating member 200 with the second insulating member 300. The good wrapping can better play the protection role of the first insulating member 200 and the second insulating member 300. When the battery pack is in a working condition of vibration or impact for a long time, the wire harness assembly 10 is prone to shake and rub against the inside of the battery pack. The good wrapping performance of the second insulating member 300 or the first insulating member 200 can avoid exposure of the wire harness, thereby avoiding interruption of the low-voltage sampling signal inside the battery pack, so that the distribution box inside the battery pack cannot collect information such as the temperature and current of the battery cell, thereby causing the risk of uncontrollable state of the battery pack.

[0028] It should be noted that in some embodiments, only the first insulation 200 is wound around the wire harness 100 by the spiral winding manner, and the second insulation 300 can be fixedly connected with the first insulation 200 by other manners, for example, the second insulation 300 wraps the first insulation 200, which can also achieve the purpose of the present application to some extent. In some embodiments, only the second insulation 300 is wound around the first insulation 200 by the spiral winding manner, and the first insulation 200 can be fixedly connected with the wire harness 100 by other manners, for example, the first insulation 200 wraps the wire harness 100, which can also achieve the purpose of the present application to some extent.

[0029] It should be noted that the wire harness 100 can be one or multiple. Referring to Figure 1 and Figure 2 , the wire harness 100 has five, the first insulation 200 and the second insulation 300 are wound around the five wire harnesses 100 in turn by the spiral winding manner, the wire harness 100 is composed of a wire core 101 and an insulation layer 102, the first insulation 200 is fixedly connected with the insulation layer 102, and the second insulation 300 is fixedly connected with the second insulation 200. When the wire harness assembly 10 rubs inside the battery pack, the second insulation 300 is wound on the side of the first insulation 200 away from the wire harness 100, avoiding the first insulation 200 from rubbing with the outside and being damaged. It should be noted that the second insulation 300 is wound on the side of the first insulation 200 away from the wire harness 100 by the spiral winding manner, and the second insulation 300 has multiple second edges 301 arranged at intervals; the distance L21 between two adjacent second edges 301 in the length direction X of the wire harness is less than the width L2 of the second insulation 300 in the length direction X of the wire harness, at this time, the area of the second insulation 300 in the unit area of the wire harness is increased due to stacking, so that the second insulation 300 is wrapped more tightly and has higher reliability, and when the wire harness assembly rubs continuously, the second insulation 300 is more wear-resistant, which can improve the anti-friction performance of the wire harness assembly and avoid wire harness wear caused by long-time rubbing.

[0030] It should be noted that the side of the first insulation layer 200 close to the wire harness 100 and the side of the second insulation layer 300 close to the first insulation layer 200 can be attached with adhesive substances, such as adhesive glue, to achieve fixed connection of the first insulation layer 200 and the second insulation layer 300 when wound by the spiral winding manner, and the manner of fixed connection is not limited here.

[0031] It should be noted that in some embodiments, the first insulation 200 and the second insulation 300 are wound in the same direction on the wire harness 100. Referring to Figure 1The first insulation member 200 and the second insulation member 300 are wound in the same direction, so that the second insulation member 300 can better wrap the first insulation member 200, and avoid exposing part of the wire harness to air due to the first insulation member 200 not completely wrapping the wire harness.

[0032] In some embodiments, the wire harness 100 includes an end portion 110 and a connecting portion; one end of the connecting portion is connected to the end portion 110, and the connecting portion is at least partially wound with the first insulation member 200 and the second insulation member 300. The end portion 110 usually needs to be electrically connected to the connector, and the end portion 110 reserved when winding the first insulation member 200 and the second insulation member 300 can be more convenient for electrically connecting with the connector 400, without the need to remove the first insulation member 200 and the second insulation member 300 at the end portion 110 before electrically connecting or fixedly connecting with the connector 400 during actual installation, and the reserved end portion 110 can simplify the physical electrical connection or fixed connection with the connector 400. It should be noted that the connecting portion can also be entirely wound with the first insulation member 200 and the second insulation member 300, which is not specifically limited here.

[0033] In some embodiments, the connecting portion includes a first portion 120 and a second portion 130; one end of the first portion 120 is connected to the end portion 110, and the other end of the first portion 120 is connected to the second portion 130. The first portion 120 is only wound with the first insulation member 200, and the second portion 130 is wound with the first insulation member 200 and the second insulation member 300. In the production or actual assembly of the wire harness assembly, it is necessary to confirm multiple times whether the wire harness assembly 10 is provided with the first insulation member 200. When the second insulation member 300 completely wraps the first insulation member 200, it is impossible to determine whether the wire harness assembly 10 has been provided with the first insulation member 200 during production or assembly, which may increase the defective rate of the wire harness assembly 10 during production or assembly. In order to more conveniently confirm that the wire harness assembly 10 is provided with the first insulation member 200, a part of the first insulation member 200 is exposed when the second insulation member 300 is wound on the side of the first insulation member 200 away from the wire harness, so that the yield of the wire harness assembly 10 during production or assembly can be improved.

[0034] In some embodiments, the wire harness includes two end portions 110 and two first portions 120, the two first portions 120 are respectively connected to the two end portions 110, and two ends of a second portion 130 are respectively connected to the other ends of the two first portions 120. Referring to Figure 1The first insulation member 200 is arranged at the two first parts 120 and the one second part 130, and the second insulation member 300 is arranged at the second part 130 on the side of the first insulation member 200 away from the wire harness 100, so that the wire harness assembly 10 can be easily identified whether the first insulation member 200 is arranged during production or assembly, and the end part 110 can be easily connected with the connector 400, so that the assembly of the wire harness assembly 10 is more convenient.

[0035] It should be noted that in some embodiments, the first part 120 is only one, that is, only one end of the wire harness assembly 10 exposes the first insulation member 200. When the length of the wire harness is moderate, it can be confirmed whether the other end of the wire harness 100 is arranged with the first insulation member 200 at one end of the wire harness. At this time, one end of the second part 130 is connected with the first part 120, and the other end of the second part 130 is directly connected with the end part 110. At this time, more wire harnesses will be wrapped by the first insulation member 200 and the second insulation member 300 at the same time, which can further improve the safety performance of the wire harness. In some embodiments, the wire harness assembly 10 is long enough, and the positions of the two ports are far apart. At this time, the first part 120 needs to be arranged at both ends of the wire harness, so that it can be confirmed from both ends of the wire harness assembly 10 whether the wire harness assembly 10 is arranged with the first insulation member 200, thereby improving the yield or efficiency of assembly.

[0036] In some embodiments, referring to Figure 1 In the process of the second insulation member 300 being spirally wound along the length direction X of the wire harness, the ratio of the spacing L21 between the two second edges 301 to the width L2 of the second insulation member 300 along the length direction of the wire harness is 9 / 10>L21 / L2>1 / 2, so that the second insulation member 300 can completely wrap the first insulation member 200 during winding, and the fixedly connected first insulation member 200 will not be exposed, which can well avoid the abrasion of the first insulation member 200. In the winding process, the wear resistance of the second insulation member 300 can be improved while the material cost of the second insulation member 300 is saved as much as possible, so that the production cost can be better controlled. Similarly, in some embodiments, in the process of the first insulation member 200 being spirally wound along the length direction X of the wire harness, the ratio of the spacing L11 between the two first edges 201 to the width L1 of the first insulation member 300 along the length direction of the wire harness is 9 / 10>L11 / L1>1 / 2, so that the first insulation member 200 can completely wrap the fixedly connected wire harness 100 during winding, and the fixedly connected wire harness 100 will not be exposed, which can well avoid the damage of the wire harness 100 when the battery pack is in thermal runaway. In the winding process, the high-temperature resistance of the first insulation member 200 can be improved while the material cost of the first insulation member 200 is saved as much as possible, so that the production cost can be better controlled.

[0037] In some embodiments, the second insulation member 300 is a wear-resistant material, and the first insulation member 200 is a high-temperature-resistant material. Therefore, the second insulation member 300 can effectively prevent internal wear of the wire harness assembly 100 of the application; when the battery module is internally in thermal runaway, etc., the thermal runaway will damage the second insulation member 300, but the first insulation member 200 is a high-temperature-resistant material, and the first insulation member 200 can effectively isolate the impact of high-temperature gas or liquid in the battery module on the wire harness 100, thereby avoiding the wire harness 100 from being pulled to arc and catch fire, thereby causing the battery pack to catch fire. Therefore, the wire harness assembly of the application is not only wear-resistant, but also can effectively prevent the wire harness 100 from being pulled to arc and catch fire or the line from being disconnected when the battery pack is in thermal runaway.

[0038] In some embodiments, the first insulation member 200 is a ceramic material or a PI high-temperature-resistant material or a mica material; and the second insulation member 300 is a cloth-based material or a polyester substrate material. In some embodiments, the first insulation member 200 is a PI high-temperature-resistant material, and the second insulation member 300 is a cloth-based material; in some embodiments, the first insulation member 200 is a ceramic material, and the second insulation member 300 is a cloth-based material; in some embodiments, the first insulation member 200 is a mica sheet, and the second insulation member 300 is a PET film.

[0039] In some embodiments, the wire harness assembly 10 further comprises a connector 400 for connecting the wire harness and an external device. When the wire harness assembly 10 comprises the connector 400, the wire harness assembly 10 is suitable for direct connection with the external device or parts, thereby simplifying the assembly.

[0040] The application also provides a battery pack comprising the wire harness assembly provided by the application. The wire harness assembly of the application improves the safety and reliability of the battery pack of the application and reduces the risk of the battery pack.

[0041] The application also provides a vehicle comprising the battery pack provided by the application. Because the battery pack reduces the risk, the vehicle of the application still has high stability when the wire harness assembly inside the battery pack continuously rubs against the inside of the battery pack due to vibration or impact during driving, and the wire harness assembly is not damaged by friction, thereby improving the safety of the vehicle.

[0042] The application also provides an electric device comprising the wire harness assembly 10 provided by the application.

[0043] In the description of the specification, the description of the terms "certain embodiments", "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the particular feature, structure, material or characteristic being described is included in at least one embodiment or example of the application. The illustrative appearances of the above-mentioned terms in various places in the specification are not necessarily intended to refer to the same embodiment or example. Moreover, the particular features, structures, materials or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0044] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary, and are not to be interpreted as limiting the present application, and that variations, modifications, substitutions and changes can be made by those skilled in the art without departing from the scope of the present application, which is defined by the claims and their equivalents.

Claims

1. A wiring harness assembly, characterized by, The application relates to a wire harness assembly. The wire harness assembly comprises: at least one wire harness; a first insulation member fixedly connected with the wire harness; a second insulation member arranged on a side of the first insulation member away from the wire harness and fixedly connected with the first insulation member; 2. The wire harness assembly of claim 1, wherein, the first insulation member is spirally wound around the wire harness along the length direction of the wire harness, the first insulation member has a plurality of first edges arranged at intervals, and the distance between two adjacent first edges along the length direction of the wire harness is less than the width of the first insulation member along the length direction of the wire harness; and / or the second insulation member is spirally wound around the side of the first insulation member away from the wire harness along the length direction of the wire harness, and the second insulation member has a plurality of second edges arranged at intervals; the distance between two adjacent second edges along the length direction of the wire harness is less than the width of the second insulation member along the length direction of the wire harness.

3. The wire harness assembly of claim 1 or 2, wherein, The winding direction of the first insulation member is the same as the winding direction of the second insulation member.

4. The wire harness assembly of claim 3, wherein, The wire harness comprises an end portion adapted to be electrically connected with a connector and a connecting portion connected with the end portion, and at least part of the connecting portion is wound with the first insulation member and the second insulation member. The connecting portion comprises a first part and a second part, one end of the first part is connected with the end portion, and the other end of the first part is connected with the second part.

5. The wire harness assembly of claim 4, wherein, The first part is wound with the first insulation member, and the second part is wound with the first insulation member and the second insulation member.

6. The wire harness assembly of claim 1, wherein, The wire harness comprises two end portions and two first parts, one end of each of the two first parts is connected with one of the two end portions, and the other end of the two first parts is connected through the second part. The distance between two adjacent first edges along the length direction of the wire harness is less than 9 / 10 of the width of the first insulation member along the length direction of the wire harness and greater than 1 / 2 of the width of the first insulation member along the length direction of the wire harness; and / or 7. The wire harness assembly of claim 1, wherein, The distance between two adjacent second edges along the length direction of the wire harness is less than 9 / 10 of the width of the second insulation member along the length direction of the wire harness and greater than 1 / 2 of the width of the second insulation member along the length direction of the wire harness.

8. The wiring harness assembly of claim 7, wherein, The first insulation member is made of high-temperature-resistant material, and the second insulation member is made of wear-resistant material.

9. The wire harness assembly of claim 7, wherein, The first insulation member is made of ceramic material, PI high-temperature-resistant material or mica material.

10. The wire harness assembly of claim 1, wherein, The second insulation member is made of cloth-based material or polyester-based material.

11. A battery pack, characterized by The wire harness assembly further comprises a connector adapted to be connected with the wire harness.

12. A vehicle characterized by comprising: The wire harness assembly comprises the wire harness assembly according to any one of claims 1-10.

13. An electrical device, characterized by The battery pack comprises the wire harness assembly according to claim 11. The wire harness assembly comprises the wire harness assembly according to any one of claims 1-10.

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