A multifunctional wiring harness protection component and battery pack

Abstract

The present invention relates to the field of electrochemical energy storage technology, and discloses a multifunctional wire harness protection component, including a protective plate, the protective plate is provided with a first through hole, the protective plate is provided with a first limiting component, the protective plate is provided with a second through hole, the second through hole upper surface is provided with a second limiting plate circumferentially, the second limiting plate is provided with a first flow channel, the first limiting component and the second limiting plate cooperate to limit the left and right positions of the wire harness, the second limiting plate and the wire harness are enclosed to form a second flow channel, the protective plate is connected to the battery module through a connecting piece, a plurality of connecting pieces and a plurality of wire harnesses are modularly assembled through the protective plate, the first limiting component, and the second limiting plate, and are integrally installed on the battery module, and the first flow channel, the second flow channel and the battery pack cover cooperate to form a channel. The present invention can limit all connecting pieces at the same time, automatically fix and limit the protective plate when the connecting piece is connected to the battery cell pole, save the installation process of installing the protective plate separately, can provide stable limiting for the wire harness, reduce the operation steps, and improve the installation efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of electrochemical energy storage, and in particular to a multifunctional wiring harness protection component and a battery pack. Background Art

[0002] The battery pack is used to store and provide electrical energy. The battery pack includes a box and multiple battery modules located in the box. The battery module includes multiple battery cells. The multiple battery cells are connected in series through connecting plates. The collection plate is connected to the connecting plate to collect the temperature, voltage and current parameters of the battery cells when they are working. The other end of the collection plate is connected to the wiring harness, and the collected parameter information is transmitted to the battery management system through the wiring harness.

[0003] When connecting the connecting plates to the battery cell poles, multiple connecting plates need to be connected to the corresponding battery cell poles in sequence. The connecting plates need to be aligned with the battery cell poles on the battery cell first, and then connected to the battery cell poles. Then the bracket used to bind the wiring harness is connected to the battery module separately. The connecting plates need to be positioned with the battery cell poles multiple times, which is time-consuming, has many operating steps, and has low installation efficiency. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of the present invention is to provide a multifunctional wire harness protection assembly, which can limit all connecting plates on a battery module at the same time, automatically fix and limit the protective plate when the connecting plate is connected to the battery cell pole, save the installation process of separately installing the protective plate, provide stable limitation for the wire harness, reduce the operating steps, and improve installation efficiency.

[0005] The technical solution adopted by the present invention is as follows: A multifunctional wire harness protection component comprises a protective plate, wherein a plurality of first through holes for exposing the lower surface of a connecting piece are arranged at intervals on both sides of the protective plate, the protective plate is provided with a plurality of first limit assemblies for limiting the connecting piece left and right, front and back, and up and down, the protective plate is provided with a plurality of second through holes for exposing the explosion-proof valve of the battery cell, a second limit plate is circumferentially arranged on the upper surface of the second through hole, the second limit plate is provided with a first flow channel for smoke flow along the length direction of the protective plate, the first limit assembly and the second limit plate cooperate to limit the wire harness left and right, the second limit plate and the wire harness respectively located on both sides of the second limit plate enclose a second flow channel for smoke flow, the protective plate is connected to the battery module through a connecting piece, a plurality of connecting pieces and a plurality of wire harnesses are modularly assembled through the protective plate, the first limit assembly and the second limit plate, and are integrally installed on the battery module, the first flow channel, the second flow channel and the battery pack cover enclose a channel directly facing the smoke sensor.

[0006] Explanation: The battery pack includes a box body, multiple battery modules located in the box body, and multiple collection plates for collecting battery cell parameters. The battery module includes multiple battery cells. The connecting plates are connected to the battery cell poles. Adjacent battery cells are connected in series through the connecting plates. One end of the collection plate is connected to the connecting plate, and the other end is connected to the wiring harness.

[0007] Principle of the technical solution:

[0008] First, all the connecting pieces on a battery module are installed on the protective plate. The first limiting component limits the connecting pieces left and right, front and back, and up and down. Then, all the wiring harnesses on a battery module are installed on the protective plate. The first limiting piece and the second limiting plate cooperate to limit the wiring harnesses. The modular assembly of the connecting pieces and wiring harnesses on a battery module is completed. When the connecting pieces are connected to the battery cell poles, a battery cell pole is aligned with the corresponding first via hole. The positioning of all the connecting pieces is completed. Since the connecting pieces are located on the protective plate and are limited, the protective plate is automatically installed on the battery module while the connecting pieces are connected to the battery cell poles. The installation of the protective plate and the battery module is completed.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] 1. The first limiting component of the present invention can not only limit the left and right, front and back, and up and down positions of the connecting piece to ensure that the connecting piece is accurately placed at the specified position, but also cooperate with the first through hole to quickly align the connecting piece with the battery cell pole, and can also cooperate with the second limiting plate to limit the left and right positions of the wiring harness, so as to realize the modular assembly of the connecting piece and the wiring harness on a battery module, and also enable all the connecting pieces on a battery module to be connected to the corresponding battery cell poles at the same time, thereby reducing the operation steps of aligning and reconnecting the connecting pieces with the battery cell poles one by one. At the same time, since the connecting piece is located on the protective plate, the lower surface of the connecting piece is connected to the battery cell pole, when the connecting piece is connected to the battery cell pole, the protective plate is limited between the connecting piece and the upper surface of the battery cell, and the position of the protective plate is fixed, that is, the protective plate is stably and automatically installed on the battery module, which can save the operation steps of separately installing the protective plate, improve the installation efficiency, and enhance the mutual connection of the battery cells on the battery module, so that the wiring harnesses on both sides of the second limiting plate can form a second flow channel for smoke flow while stably limiting.

[0011] 2. When the explosion-proof valve is opened, high-temperature gas and electrolyte will be released. The wiring harness will be in contact with the explosion-proof valve or located above the explosion-proof valve, which may easily lead to damage to the outer skin of the wiring harness, reduced insulation performance, deformation of the wiring harness or cause a short circuit. The second limit plate of the present invention not only guides the smoke flowing out of the explosion-proof valve, but the first flow channel on the second limit plate can guide the smoke to flow along the length direction of the protective plate. The channel formed by the first flow channel, the second flow channel and the battery pack cover can ensure the directional flow of smoke, prevent the smoke from running around, ensure that the smoke quickly enters the smoke sensor, improve the early warning capability of the smoke sensor, and provide timely feedback on abnormal conditions in the battery pack to reduce the occurrence of fire, explosion and other dangerous situations.

[0012] As a preferred embodiment of the present invention, the first limiting assembly includes a second limiting assembly located between the first through hole and the second through hole, the second limiting assembly includes multiple first limiting plates and multiple first limiting members, the first limiting member is located between adjacent first limiting plates, and a gap for the wiring harness to pass through is provided between the first limiting member and the first limiting plate, the first limiting member is opposite to the second limiting plate, the upper end of the first limiting plate is located above the limiting plate, the second limiting member and the connecting plate, the first limiting plate abuts against the side of the connecting plate, and a third limiting plate is provided on the upper end of the surface of the first limiting plate close to the second limiting plate, and the protective plate, the first limiting plate, the first limiting member, the second limiting plate and the third limiting plate are enclosed to limit the wiring harness left and right and up and down.

[0013] In this solution, since the first limit member is opposite to the second limit plate, the first limit member is located between adjacent first limit plates, the first limit plate is connected to the third limit plate, and the third limit plate is staggered with the second limit plate, the wiring harness is placed in the space enclosed by the protective plate, the first limit plate, the first limit member, the second limit plate and the third limit plate, and the end of the wiring harness connected to the collection plate passes through the gap between the first limit plate and the first limit member.

[0014] Beneficial effect: the first limit plate, the first limit member and the second limit plate of the present invention cooperate to limit the left and right positions of the wiring harness, the third limit plate and the protective plate cooperate to limit the upper and lower positions of the wiring harness, and then the protective plate, the first limit plate, the first limit member, the second limit plate and the third limit plate cooperate to limit the upper, lower, left and right positions of the wiring harness. The first limit plate is provided with a third limit plate, that is, only one side between the first limit plate and the second limit plate is provided with the third limit plate, and the third limit plate and the second limit plate are staggered, so that the length of the third limit plate can be designed to be as long as possible to provide stable limiting for the wiring harness; and compared with limiting only on both sides of the wiring harness, this solution can provide stable limiting for the wiring harness.

[0015] As a preferred embodiment of the present invention, the first limiting member includes an elastic limiting plate, the limiting plate includes a first connecting part and a second connecting part, the first connecting part is connected to the protective plate and is elastic, the second connecting part is connected to the upper end of the first connecting part, the first limiting assembly also includes a plurality of second limiting members located on one side of the first through hole and opposite to the limiting plate, the second limiting member includes a third connecting part and a fourth connecting part, the third connecting part is connected to the protective plate, the fourth connecting part is connected to the upper end of the third connecting part, when the third connecting part abuts against the side of the connecting plate, the first connecting part abuts against the side of the connecting plate, the second connecting part and the fourth connecting part both abut against the upper surface of the connecting plate, the limiting plate and the second limiting member cooperate to limit the connecting plate left and right, front and back, up and down.

[0016] Beneficial effect: The protective plate provides support for the second limiting piece. In this solution, the connecting piece is first installed on the protective plate, and one end is abutted against the second limiting piece. Since the limiting piece is elastic, the limiting piece is first moved so that the connecting piece is located between the second limiting piece and the limiting piece. Under the action of elasticity, the limiting piece abuts against the connecting piece, and the protective plate, the first connecting part and the third connecting part cooperate to limit the connecting piece left and right and front and back, and the protective plate, the second connecting part and the fourth connecting part cooperate to limit the connecting piece up and down, so as to achieve rapid limitation of all connecting pieces on a battery module at the same time, so that when the connecting piece is aligned with the battery cell pole, the intervals between adjacent connecting pieces are uniform and the specifications are uniform; and compared with the design of setting limiting plates around the connecting piece, this solution can not only accurately limit the connecting piece, but also reduce the processing difficulty compared with the design of setting limiting plates around the connecting piece, and the processing is easier to achieve. The design of setting limiting plates around requires high processing precision, resulting in great processing difficulty.

[0017] As a preferred embodiment of the present invention, the first limiting member further includes two fourth limiting plates respectively located on both sides of the limiting piece, a gap is provided between the fourth limiting plates and the limiting piece, and the fourth limiting plates abut against the side edge of the connecting piece.

[0018] Beneficial effect: The fourth limiting plate and the limiting piece cooperate to increase the contact surface with the side edge of the connecting piece, thereby enhancing the limiting of the connecting piece, while ensuring that the limiting piece can be moved.

[0019] As a preferred embodiment of the present invention, a plurality of pairs of support columns are provided between the side of the protective plate and the first through hole, which are spaced apart along the length direction of the protective plate and abut against the side of the connecting plate. The support columns are located between two adjacent second limiting members, and the height of the support columns is greater than or equal to the height of the first limiting plate. The height of the first limiting plate is greater than or equal to the height of the first limiting member.

[0020] Beneficial effect: When external force is applied to the battery pack cover, the support column can prevent the external force from directly compressing the wiring harness and the collection plate, and prevent the connecting plate from directly contacting the battery pack cover. The support column and the first limit plate cooperate to enhance the protection of the connecting plate, the wiring harness and the collection plate, and reduce the wear caused by the contact between the connecting plate, the wiring harness and the collection plate and the box body. The support column and the second limit piece cooperate to limit the connecting plate to the left and right.

[0021] As a preferred embodiment of the present invention, baffles are provided on both sides of the protective plate, the inner side of the baffles are in contact with the second limiting member, the support column and the connecting plate, the height of the baffles is equal to the height of the support column, and the baffles and the first limiting plate cooperate to limit the connecting plate to the left and right.

[0022] Beneficial effect: The baffle can prevent the second limiter and the support column from being damaged by external force. The baffle, protective plate and battery pack cover can cooperate to enclose a space that runs through the length direction of the protective plate, which can provide protection for the wiring harness, collection plate, connecting plate and limit plate in this space. When external force is applied to the box, it can play a buffering role and serve as a passage to quickly and orderly guide the heat or smoke generated in this space.

[0023] As a preferred embodiment of the present invention, a portion of the lower surface of the protective plate located between the two first limit plates in the width direction of the protective plate is symmetrically provided with a plurality of grooves spaced apart along the length direction of the protective plate, and the grooves are located directly below the wiring harness.

[0024] Beneficial effect: The groove can reduce the weight of the protective plate, and at the same time can create a gap between the wiring harness and the upper surface of the battery cell, thereby reducing the heat transfer from the battery cell to the wiring harness and improving the heat dissipation performance of the battery cell.

[0025] A second object of the present invention is to provide a battery pack, comprising the multifunctional wiring harness protection assembly described above.

[0026] As a preferred embodiment of the present invention, it includes a connecting piece for connecting battery cells in series, and the two side surfaces of the connecting piece are respectively abutted against the baffle, the first limiting member, the first limiting plate, and the second limiting member, and the connecting piece is provided with a first notch for accommodating the second limiting member and a second notch for accommodating a pair of support columns.

[0027] Beneficial effect: the second notch can not only accommodate the support column, but also enable the support column to limit the front and rear positions of the connecting piece.

[0028] As a preferred embodiment of the present invention, it also includes a collection piece for collecting the temperature and voltage of the battery cell, the connecting piece is symmetrically provided with a third via hole, the third via hole is opposite to the gap between the first limiting plate and the fourth limiting plate, the collection piece includes a main body and a clamping piece, the clamping piece can be clamped with the third via hole, the clamping piece includes a fifth connecting part, a sixth connecting part and a seventh connecting part located at both ends of the fifth connecting part and on the same side, the fifth connecting part is parallel to the main body, the sixth connecting part is connected to the main body, and the sixth connecting part and the seventh connecting part are both in contact with the side wall of the third via hole.

[0029] Beneficial effect: The clamping connection between the third via hole and the clamping piece can facilitate and quickly replace the acquisition sheet, and can also increase the contact surface between the acquisition sheet and the connecting sheet, thereby improving the accuracy of data acquisition. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the multifunctional wire harness protection assembly of the present invention;

[0031] Figure 2It is a schematic diagram of the structure at position A of the present invention;

[0032] Figure 3 It is a schematic diagram of the structure of the multifunctional wire harness protection assembly and the connecting piece of the present invention;

[0033] Figure 4 It is a schematic diagram of the structure at position B of the present invention;

[0034] Figure 5 It is a structural schematic diagram of the multifunctional wire harness protection assembly and the connecting piece of the present invention from another angle;

[0035] Figure 6 It is a schematic diagram of the structure at position C of the present invention;

[0036] Figure 7 It is a structural schematic diagram of the multifunctional wire harness protection assembly and the connecting piece of the present invention from another angle;

[0037] Figure 8 It is a schematic diagram of the structure at position D of the present invention;

[0038] Fig. 9 It is an exploded view of the multifunctional wire harness protection assembly, the connecting piece, the wire harness and the collecting piece of the present invention;

[0039] Fig.10 It is a schematic diagram of the structure at position E of the present invention;

[0040] Fig.11 It is a schematic diagram of the structure at position F of the present invention;

[0041] Fig.12 It is an exploded view of the battery module, the multifunctional wiring harness protection assembly, the connecting piece, the wiring harness and the collection piece of the present invention;

[0042] Fig.13 It is a schematic diagram of the structure of a part of the battery pack of the present invention. DETAILED DESCRIPTION

[0043] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially used for illustration purposes rather than for limiting the present invention.

[0044] In the description of the present application, the terms "first", "second", "one side", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the structure referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present application.

[0045] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0046] The reference numerals include: protective plate 1, first through hole 2, second limiting assembly 3, first limiting plate 301, first limiting member 302, limiting plate 3021, first connecting portion 30211, second connecting portion 30212, fourth limiting plate 3022, second through hole 4, second limiting plate 5, third limiting plate 6, second limiting member 7, third connecting portion 701, fourth connecting portion 702, supporting column 8, baffle 9, groove 10, connecting plate 11, first notch 1101, second notch 1102, third through hole 1103, collecting plate 12, main body 1201, clamping member 1202, fifth connecting portion 12021, sixth connecting portion 12022, seventh connecting portion 12023.

[0047] Explanation: The battery pack includes a box body, multiple battery modules located in the box body, and multiple collection plates for collecting battery cell parameters. The box body includes a box cover. The battery module includes multiple battery cells. The connecting plates are connected to the battery cell poles. Adjacent battery cells are connected in series through the connecting plates. One end of the collection plate is connected to the connecting plate, and the other end is connected to the wiring harness.

[0048] Example 1

[0049] like Figure 1-13 As shown, the multifunctional harness protection assembly, such as Figure 1 and Fig.12 As shown, it includes a protective plate 1, the lower surface of the protective plate 1 is in contact with the upper surface of the battery module, and the connecting piece 11 is located on the protective plate 1. Figure 2 As shown, baffles 9 are provided on both sides of the left and right sides of the protective plate 1, and a plurality of first through holes 2 for exposing the lower surface of the connecting piece 11 are provided at intervals on both sides of the protective plate 1 along the length direction of the protective plate 1. The protective plate 1 is provided with a plurality of second through holes 4 for exposing the explosion-proof valves of the battery cell, and the second through holes 4 are located between the two first through holes 2 and are arranged at intervals along the length direction of the protective plate 1, and a second limiting plate 5 is provided circumferentially on the upper surface of the second through holes 4. A plurality of pairs of support columns 8 are provided between the side of the protective plate 1 and the first through holes 2, which are distributed at intervals along the length direction of the protective plate 1 and abut against the side of the connecting piece 11, and the height of the baffle 9 is equal to the height of the support column 8. The protective plate 1 is provided with a plurality of first limiting components located on both sides of the first through holes 2 for limiting the left and right, front and back, and up and down positions of the connecting piece.

[0050] like Figure 2 and Figure 4As shown, in this embodiment, the second limiting plate 5 is symmetrically provided with a third notch, and the second limiting plate 5 and the third notch cooperate to enclose a first flow channel for smoke flow along the length direction of the protective plate 1, and the first limiting assembly and the second limiting plate 5 cooperate to limit the wiring harness left and right and up and down, and the second limiting plate 5 and the wiring harnesses respectively located on both sides of the second limiting plate 5 enclose a second flow channel for smoke flow, and the protective plate 1 is connected to the battery module through a connecting plate 11, and multiple connecting plates and multiple wiring harnesses are modularly assembled through the protective plate 1, the first limiting assembly, and the second limiting plate 5, and are installed as a whole on the battery module, and the first flow channel, the second flow channel and the battery pack cover enclose a channel directly opposite to the smoke sensor.

[0051] In this embodiment, the support column 8 is provided with a threaded hole, and the support column 8 is threadedly connected with a cover plate which is parallel to and equal in size to the protective plate 1. The cover plate can provide protection for the connecting plate 11 and the wiring harness. The cover plate, the protective plate 1, and the baffle 9 can also be enclosed to form a passage for smoke flow that passes through both ends along the length direction of the protective plate 1.

[0052] like Figure 2 As shown, the first limiting assembly includes a second limiting assembly 3 located between the first through hole 2 and the second through hole 4, and a plurality of second limiting members 7 located on one side of the first through hole 2. The second limiting assembly 3 includes a plurality of first limiting plates 301 and a plurality of first limiting members 302 spaced apart along the length direction of the protective plate 1. In this embodiment, one connecting piece 11 corresponds to two first limiting plates 301 and two first limiting members 302. The first limiting members 302 are located between adjacent first limiting plates 301. The first limiting members 302 and the first limiting members 302 are spaced apart along the length direction of the protective plate 1. A gap is provided between the positioning plates 301 for the wiring harness to pass through, the first limiting member 302 is opposite to the second limiting plate 5, the upper end of the first limiting plate 301 is located above the limiting plate 3021, the second limiting member 7 and the connecting plate 11, the first limiting plate 301 abuts against the side of the connecting plate 11, and a third limiting plate 6 is provided on the upper end of the surface of the first limiting plate 301 close to the second limiting plate 5, the protective plate 1, the first limiting plate 301, the first limiting member 302, the second limiting plate 5 and the third limiting plate 6 are enclosed for limiting the wiring harness left and right and up and down.

[0053] In this embodiment, the protective plate 1 is located below the wiring harness, the first limiting plate 301, the first limiting member 302 and the second limiting plate 5 are respectively located on both sides of the wiring harness, and the third limiting plate 6 is located above the wiring harness. The protective plate 1, the first limiting plate 301, the first limiting member 302 and the second limiting plate 5 limit the wiring harness left and right, and the protective plate 1 and the third limiting plate 6 limit the wiring harness up and down.

[0054] like Figure 2As shown, the first limiting member 302 includes an elastic limiting piece 3021, two fourth limiting plates 3022 respectively located on both sides of the limiting piece 3021, the limiting piece 3021 includes a first connecting portion 30211 and a second connecting portion 30212, the first connecting portion 30211 is connected to the protective plate 1 and has elasticity, the second connecting portion 30212 is connected to the upper end of the first connecting portion 30211, there is a gap between the fourth limiting plate 3022 and the limiting piece 3021, the fourth limiting plate 3022 is in contact with the side of the connecting piece 11, in this embodiment, as shown in FIG. Figure 2 and Figure 4 As shown, one connecting piece 11 corresponds to two second limiting members 7, the second limiting member 7 is opposite to the limiting member 3021, the second limiting member 7 includes a third connecting portion 701 and a fourth connecting portion 702, the third connecting portion 701 is connected to the protective plate 1, the fourth connecting portion 702 is connected to the upper end of the third connecting portion 701, when the third connecting portion 701 abuts against the side of the connecting piece 11, the first connecting portion 30211 abuts against the side of the connecting piece 11, the second connecting portion 30212 and the fourth connecting portion 702 both abut against the upper surface of the connecting piece 11, the limiting piece 3021 and the second limiting member 7 cooperate to limit the connecting piece 11 left and right, front and back, up and down.

[0055] In this embodiment, the upper surface of the support column 8 can be abutted against the inner surface of the box cover, a pair of support columns 8 are located between two adjacent second limiting members 7, the height of the support column 8 is greater than or equal to the height of the first limiting plate 301, the height of the first limiting plate 301 is greater than or equal to the height of the first limiting member 302, and the inner side surface of the baffle 9 is abutted against the third connecting part 701 on the second limiting member 7, the outer edge of the support column 8, and the connecting plate 11, and the baffle 9 and the first limiting plate 301 cooperate to limit the connecting plate 11 left and right.

[0056] like Figure 5 and Figure 6 As shown, a portion of the lower surface of the protective plate 1 between the two first limit plates 301 in the width direction of the protective plate 1 is symmetrically provided with a plurality of grooves 10 spaced apart along the length direction of the protective plate 1 , and the grooves 10 are located directly below the wiring harness.

[0057] In this embodiment, the first limiting plate 301 is a plate with a rectangular longitudinal section, the second through hole 4 is an elliptical cross section with the major axis arranged along the length direction of the protective plate 1, the second limiting plate 5 is an arc-shaped plate, and the third limiting plate 6 is a long strip-shaped plate.

[0058] like Fig.12 and Fig.13 As shown, the battery pack, such as Fig. 9 and Fig.10As shown, it includes the multifunctional wiring harness protection component mentioned above, a connecting piece 11 for connecting battery cells in series, and a collecting piece 12 for collecting battery cell temperature and voltage. The two side surfaces of the connecting piece 11 are respectively abutted against the baffle 9, the first limiting member 302, the first limiting plate 301, and the second limiting member 7. The connecting piece 11 is provided with a first notch 1101 for accommodating the second limiting member 7 and a second notch 1102 for accommodating a pair of support columns 8. In this embodiment, when the third connecting portion 701 is located in the first notch 1101 and abuts against the side of the connecting piece 11, the first connecting portion 30211 abuts against the side of the connecting piece 11, and the second connecting portion 30212 and the fourth connecting portion 702 both abut against the upper surface of the connecting piece 11.

[0059] like Figure 7 and Figure 8 As shown, the connecting sheet 11 is symmetrically provided with a third through hole 1103, and the third through hole 1103 is directly opposite to the gap between the first limiting plate 301 and the fourth limiting plate 3022, as shown in FIG. Fig.11 As shown, the collection piece 12 includes a main body 1201 and a clamping piece 1202, the clamping piece 1202 can be clamped with the third through hole 1103, the clamping piece 1202 includes a fifth connecting portion 12021, a sixth connecting portion 12022 and a seventh connecting portion 12023 located at both ends of the fifth connecting portion 12021 and on the same side, the fifth connecting portion 12021 is parallel to the main body 1201, the sixth connecting portion 12022 is connected to the main body 1201, and the sixth connecting portion 12022 and the seventh connecting portion 12023 are both in contact with the side wall of the third through hole 1103.

[0060] In this embodiment, there are two groups of battery modules arranged in parallel in the battery pack, each group includes multiple battery modules, and the design of only having the third limiting plate 6 on one side can make the space between the first limiting plate 301 and the second limiting plate 5 large enough to accommodate multiple wiring harnesses and effectively limit the multiple wiring harnesses.

[0061] Specific installation steps:

[0062] One side of the connecting piece 11 is in contact with the baffle 9, the third connecting portion 701 on the second limiting member 7 is located in the first notch 1101 on the connecting piece 11 and is in contact with the side wall of the first notch 1101, a pair of support columns 8 are located in the second notch 1102, hold the second connecting portion 30212 on the limiting piece 3021, and rotate vertically with the connection between the first connecting portion 30211 and the protective plate 1 as a fulcrum to expose the upper surface of the protective plate 1, press the connecting piece 11 downward, and allow the connecting piece 11 to fall onto the protective plate 1, and allow the connecting piece 11 to The lower surface of the connecting piece 11 is fitted with the upper surface of the protective plate 1, the side of the connecting piece 11 is abutted against the first limiting plate 301 and the fourth limiting plate 3022, the fourth connecting portion 702 on the second limiting member 7 is abutted against the upper surface of the connecting piece 11, and the second connecting portion 30212 is released. The first connecting portion 30211 is elastic, and under the action of elastic force, the second connecting portion 30212 is driven back to the initial position and abutted against the upper surface of the connecting piece 11. According to the above steps, all the connecting pieces 11 on a battery module are connected to the protective plate 1;

[0063] Then place the wiring harness on a battery module in the space enclosed by the protective plate 1, the second limiting assembly 3, the second limiting plate 5 and the third limiting plate 6. Specifically, due to the setting of the third limiting plate 6, the space for placing the wiring harness is large enough, and the wiring harness corresponding to the connecting piece 11 at the rear end is close to the second limiting plate 5. The wiring harness is placed from right to left and from bottom to top to ensure that the wiring harness is stably limited and opposite to the outer surface of the bottom of the groove 10. One end of the wiring harness connected to the collection piece 12 passes through the gap between the first limiting plate 301 and the fourth limiting plate 3022, and then the collection piece 12 connected to the wiring harness is installed on the corresponding connecting piece 11, and each connecting piece 11 is clamped with the corresponding collection piece 12. Specifically, the clamping piece 1202 on the collection piece 12 extends into the third through hole 1103, and the sixth connecting part 12022 and the seventh connecting part 12023 on the clamping piece 1202 abut against the side wall of the third through hole 1103, thereby realizing the modular assembly of the connecting piece 11 and the wiring harness on a battery module.

[0064] The battery cell pole is opposite to the first via hole 2, and all the connecting pieces 11 are aligned with the corresponding battery cell poles through the first via hole 2 at the same time. The connecting pieces 11 are welded to the battery cell poles on the corresponding battery module. Since the protective plate 1 is located between the connecting piece 11 and the upper surface of the battery module at this time, the protective plate 1 is automatically connected to the battery module indirectly, eliminating the step of installing the protective plate 1 on the battery module and the setting of related components.

[0065] Example 2

[0066] This embodiment is basically the same as the embodiment 1, except that the second limiting assembly 3 includes a plurality of first limiting plates 301 and a first limiting member 302, the first limiting member 302 includes a limiting plate 3021 and two fourth limiting plates 3022, the first limiting plate 301 and the first limiting member 302 are both elastic, and the specific operation when the connecting plate 11 and the wiring harness are installed on the protective plate 1 is to place the wiring harness on a battery module on the protective plate 1, the second limiting assembly 3, the second limiting plate 5 and the first limiting member 302. In the space enclosed by the three limiting plates 6, one side of the connecting piece 11 abuts against the baffle 9, the third connecting portion 701 on the second limiting member 7 is located in the first notch 1101 on the connecting piece 11 and abuts against the side wall of the first notch 1101, a pair of support columns 8 are located in the second notch 1102, the second limiting component 3 is moved, and the second limiting component 3 rotates vertically to expose the upper surface of the protective plate 1, at this time, the connecting piece 11 is inclined with the upper surface of the protective plate 1, and the left side of the connecting piece 11 is connected to the support column 8 and the third connecting portion 7 01 contact, the right side of the connecting piece 11 abuts against the second limiting component 3, so that the second limiting component 3 bends and is located above the wiring harness, limiting the upper part of the wiring harness, and then the collection piece 12 connected to the wiring harness is connected to the connecting piece 11. When the collection piece 12 is clamped with the third through hole 1103 on the connecting piece 11, the force of pressing the collection piece 12 drives the corresponding connecting piece 11 to move downward and fit with the upper surface of the protective plate 1. The second limiting component 3 returns to the initial position under the action of elastic force. When all the collection pieces 12 are clamped with the connecting piece 11 in turn, all the connecting pieces 11 also move downward in turn accordingly, so that when the collection piece 12 is connected to the connecting piece 11, the connecting piece 11 falls to the corresponding position, reducing the operation steps, and in this process, the upper part of the wiring harness is limited by the second limiting component 3 to prevent the collection piece 12 on the rear wiring harness from being pulled by the front wiring harness after being connected to the connecting piece 11, resulting in the change of the position of the wiring harness during assembly, ensuring that the wiring harness is always limited during assembly.

[0067] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A multifunctional wire harness protection assembly, characterized in that: A protective plate is included, wherein a plurality of first through holes for exposing the lower surface of the connecting piece are provided at intervals on both sides of the protective plate, the protective plate is provided with a plurality of first limiting components for limiting the connecting piece left and right, front and back, and up and down, the protective plate is provided with a plurality of second through holes for exposing the explosion-proof valve of the battery cell, a second limiting plate is provided circumferentially on the upper surface of the second through hole, the second limiting plate is provided with a first flow channel for smoke flow along the length direction of the protective plate, the first limiting component and the second limiting plate cooperate to limit the left and right positions of the wiring harness, the second limiting plate and the wiring harness respectively located on both sides of the second limiting plate enclose a second flow channel for smoke flow, the protective plate is connected to the battery module through the connecting piece, a plurality of connecting pieces and a plurality of wiring harnesses are modularly assembled through the protective plate, the first limiting component and the second limiting plate, and are integrally installed on the battery module, the first flow channel, the second flow channel and the battery pack cover enclose a channel directly facing the smoke sensor; The first limiting assembly includes a second limiting assembly located between the first through hole and the second through hole, the second limiting assembly includes a plurality of first limiting plates and a plurality of first limiting members, the first limiting member is located between adjacent first limiting plates, a gap for the wiring harness to pass through is provided between the first limiting member and the first limiting plate, the first limiting member is opposite to the second limiting plate, the upper end of the first limiting plate is located above the limiting plate, the second limiting member and the connecting plate, the first limiting plate abuts against the side of the connecting plate, a third limiting plate is provided on the upper end of the surface of the first limiting plate close to the second limiting plate, the protective plate, the first limiting plate, the first limiting member, the second limiting plate and the third limiting plate are enclosed for limiting the wiring harness left and right and up and down.

2. The multifunctional wire harness protection assembly according to claim 1, characterized in that: The first limiting member includes an elastic limiting plate, and the limiting plate includes a first connecting part and a second connecting part. The first connecting part is connected to the protective plate and is elastic, and the second connecting part is connected to the upper end of the first connecting part. The first limiting assembly also includes a plurality of second limiting members located on one side of the first through hole and opposite to the limiting plate. The second limiting member includes a third connecting part and a fourth connecting part. The third connecting part is connected to the protective plate, and the fourth connecting part is connected to the upper end of the third connecting part. When the third connecting part abuts against the side of the connecting plate, the first connecting part abuts against the side of the connecting plate, and the second connecting part and the fourth connecting part both abut against the upper surface of the connecting plate. The limiting plate and the second limiting member cooperate to limit the connecting plate left and right, front and back, and up and down.

3. The multifunctional wire harness protection assembly according to claim 1, characterized in that: The first limiting member further includes two fourth limiting plates respectively located on both sides of the limiting piece, a gap is provided between the fourth limiting plates and the limiting piece, and the fourth limiting plates abut against the side edge of the connecting piece.

4. The multifunctional wire harness protection assembly according to claim 2, characterized in that: A plurality of pairs of support columns are provided between the side of the protective plate and the first through hole, which are spaced apart along the length direction of the protective plate and abut against the side of the connecting plate. The support columns are located between two adjacent second limiting members, and the height of the support columns is greater than or equal to the height of the first limiting plate. The height of the first limiting plate is greater than or equal to the height of the first limiting member.

5. The multifunctional wire harness protection assembly according to claim 4, characterized in that: Baffles are provided on both sides of the protective plate, and the inner side of the baffles abuts against the second limiting member, the support column, and the connecting piece. The height of the baffle is equal to the height of the support column. The baffles and the first limiting plate cooperate to limit the connecting piece to the left and right.

6. The multifunctional wire harness protection assembly according to claim 1, characterized in that: A portion of the lower surface of the protective plate located between the two first limit plates in the width direction of the protective plate is symmetrically provided with a plurality of grooves spaced apart along the length direction of the protective plate, and the grooves are located directly below the wiring harness.

7. A battery pack, characterized in that: It comprises the multifunctional wire harness protection assembly as described in any one of claims 1 to 6.

8. The battery pack according to claim 7, characterized in that: It includes a connecting piece for connecting battery cells in series, the two sides of which are respectively in contact with the baffle, the first limiting piece, the first limiting plate and the second limiting piece, and the connecting piece is provided with a first notch for accommodating the second limiting piece and a second notch for accommodating a pair of support columns.

9. The battery pack according to claim 7, characterized in that: It also includes a collection piece for collecting the temperature and voltage of the battery cell, the connecting piece is symmetrically provided with a third via hole, the third via hole is opposite to the gap between the first limiting plate and the fourth limiting plate, the collection piece includes a main body and a clamping piece, the clamping piece can be clamped with the third via hole, the clamping piece includes a fifth connecting part, a sixth connecting part and a seventh connecting part located at both ends of the fifth connecting part and on the same side, the fifth connecting part is parallel to the main body, the sixth connecting part is connected to the main body, and the sixth connecting part and the seventh connecting part are both in contact with the side wall of the third via hole.

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