Wire harness fixing device and battery pack

Abstract

The utility model relates to a wire harness fixing device and a battery pack, the wire harness fixing device comprises a plurality of fixing shells arranged side by side, each fixing shell is provided with a wire harness fixing cavity and a wire harness fixing groove which are mutually independent, the wire harness fixing cavities of the plurality of fixing shells are communicated in sequence, and the wire harness fixing grooves of the plurality of fixing shells are also communicated in sequence. The fixing shell is provided with the wire harness fixing cavity and the wire harness fixing groove which are independent from each other, when the fixing shell is used for a battery pack, the fixing shell can be fixed in a battery pack box body, high-voltage wire harnesses are arranged in the wire harness fixing cavity, low-voltage wire harnesses are arranged in the wire harness fixing groove, and the high-voltage wire harnesses and the low-voltage wire harnesses are separately fixed, so that the high-voltage wire harnesses and the low-voltage wire harnesses are separated; on one hand, wire harness distribution in the battery pack is beautified, later line fault checking is facilitated, on the other hand, the wire harness fixing cavity penetrating through the two ends facilitates heat dissipation of high-voltage wire harnesses, and the problem of difficult heat dissipation caused by crossing redundancy of the high-voltage wire harnesses and the low-voltage wire harnesses is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a wiring harness fixing device and a battery pack. Background Art

[0002] During the production and assembly of lithium battery packs, limited by factors such as spatial envelope size, the high and low voltage wiring harnesses between battery modules are mainly connected by plug-in connection. However, the high and low voltage wiring harnesses of existing battery modules are fixed with redundant and interlaced features, which not only makes heat dissipation difficult but also makes it difficult to troubleshoot the circuits later. At the same time, the wiring harnesses are prone to loosening during the troubleshooting process, creating the risk of circuit failure. Utility Model Content

[0003] Based on this, in order to address the technical problem that the high and low voltage wiring harnesses of the current battery module are redundantly interlaced, which not only makes heat dissipation difficult, but also makes it inconvenient for subsequent line troubleshooting, and the wiring harnesses are prone to loosening during the troubleshooting process, causing the risk of circuit failure, the utility model provides a wiring harness fixing device and a battery pack.

[0004] The utility model provides a wire harness fixing device, which includes a plurality of fixing shells arranged side by side, each of the fixing shells is formed with a mutually independent wire harness fixing cavity and a wire harness fixing groove, the wire harness fixing cavities of the plurality of fixing shells are sequentially connected and the wire harness fixing grooves of the plurality of fixing shells are also sequentially connected.

[0005] The fixing shell of the utility model is provided with a mutually independent wiring harness fixing cavity and wiring harness fixing groove. When used in a battery pack, the fixing shell can be fixed in the battery pack case, the high-voltage wiring harness is arranged in the wiring harness fixing cavity, and the low-voltage wiring harness is arranged in the wiring harness fixing groove. The high-voltage wiring harness and the low-voltage wiring harness are fixed separately to achieve the separation of high and low voltage wiring harnesses. On the one hand, the wiring harness distribution in the battery pack is beautiful, which is convenient for later troubleshooting of line faults. On the other hand, the wiring harness fixing cavities with both ends through are conducive to the heat dissipation of the high-voltage wiring harness, avoiding the problem of heat dissipation difficulty caused by the cross-redundancy of high and low voltage wiring harnesses.

[0006] As a further improvement to the above-mentioned solution of the present invention, each of the fixed shells includes a first shell and a second shell. The cross-sections of the first shell and the second shell are both U-shaped, and the openings of the first shell and the second shell are arranged relative to each other. The two side walls of the first shell are detachably connected to the two side walls of the second shell to form a wiring harness fixing cavity between the first shell and the second shell. The side of the second shell away from the first shell is formed with a wiring harness fixing groove. The fixed shell is divided into the first shell and the second shell, which are interlocked, to facilitate the arrangement of the high-voltage wiring harness. After the high-voltage wiring harness is arranged in the first shell, the second shell is then interlocked with the first shell to fix the high-voltage wiring harness.

[0007] As a further improvement to the above solution of the present invention, guide ribs are provided on the outer side surfaces of both side walls of the first shell, and guide grooves are provided on both sides of the second shell near its open end, with the two guide ribs respectively snapping into the two guide grooves. The guidance of the guide ribs facilitates the connection between the first and second shells.

[0008] As a further improvement to the above-mentioned solution of the present invention, the outer side surfaces of both side walls of the first shell are provided with protrusions, and the outer side walls of the second shell are provided with grooves that match the protrusions. The two protrusions are respectively engaged in the two grooves. The protrusions and grooves realize the mortise and tenon fixation of the first shell and the second shell, making the connection between the first shell and the second shell reliable.

[0009] As a further improvement to the above-mentioned solution of the present invention, through-hole 1 is formed through both side walls of housing 1, and through-hole 2 is formed through both side walls of housing 2. The two through-holes 1 are respectively connected to the two through-holes 2, and the corresponding through-holes 1 and 2 cooperate to form a threading channel for the wiring harness to pass through. When arranging the high-voltage wiring harness, the high-voltage wiring harness can be led out from one through-hole to achieve the connection between the high-voltage wiring harness and the battery cell. After the housing 2 and the housing 1 are fastened together, the provision of the through-hole 2 can clamp and fix the led-out high-voltage wiring harness.

[0010] As a further improvement to the above solution of the present invention, a pressure plate is formed on each side wall of the second housing, away from the end of the first housing. The two pressure plates are arranged opposite each other with a gap between them to form a wiring harness fixing groove. By providing the pressure plates to form the wiring harness fixing groove, the arrangement of the low-voltage wiring harness is facilitated.

[0011] As a further improvement to the above solution of the present invention, the two pressure plates are each formed with reinforcing ribs extending to the two side walls of the housing on the side away from each other. The reinforcing ribs can improve the structural strength of the pressure plates and increase the service life of the wiring harness fixing device.

[0012] As a further improvement to the above solution of the present invention, the U-shaped bottom of the housing 1 is provided with a plurality of fixing holes spaced apart from each other, through which the housing 1 and the battery pack body can be connected by bolts.

[0013] As a further improvement of the above solution of the utility model, a plurality of cable tie through holes are spaced apart on the U-shaped bottom of the housing 2. By providing the cable tie through holes, the low-voltage wire harness in the wire harness fixing groove can be fixed with a cable tie.

[0014] The utility model provides a battery pack, which includes the wiring harness fixing device as described above.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The fixing shell of the utility model is provided with a mutually independent wiring harness fixing cavity and wiring harness fixing groove. When used in a battery pack, the fixing shell can be fixed in the battery pack case, the high-voltage wiring harness is arranged in the wiring harness fixing cavity, and the low-voltage wiring harness is arranged in the wiring harness fixing groove. The high-voltage wiring harness and the low-voltage wiring harness are fixed separately to achieve the separation of high and low voltage wiring harnesses. On the one hand, the wiring harness distribution in the battery pack is beautiful, which is convenient for later troubleshooting of line faults. On the other hand, the wiring harness fixing cavities with both ends through are conducive to the heat dissipation of the high-voltage wiring harness, avoiding the problem of heat dissipation difficulty caused by the cross-redundancy of high and low voltage wiring harnesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of a wiring harness fixing device proposed in an embodiment of the present utility model;

[0018] Figure 2 This is an exploded view of a fixing shell in a wiring harness fixing device proposed in an embodiment of the present utility model;

[0019] Figure 3 for Figure 1 Enlarged schematic diagram of point A in the middle.

[0020] Figure numerals: 1. Wire harness fixing cavity; 2. Wire harness fixing groove; 3. Shell one; 4. Shell two; 5. Guide rib; 6. Guide groove; 7. Bump; 8. Groove; 9. Threading channel; 10. Pressure plate; 11. Reinforcing rib; 12. Fixing hole; 13. Cable tie through hole; 14. Crossbeam. DETAILED DESCRIPTION

[0021] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to specific embodiments. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to facilitate a more thorough and comprehensive understanding of the disclosure of the present invention.

[0022] 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 art 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.

[0023] This embodiment addresses the technical problem that the high and low voltage wiring harnesses in the current battery module are redundantly interlaced, which not only makes heat dissipation difficult but also makes it difficult to troubleshoot the circuits later. In addition, the wiring harnesses are prone to loosening during the troubleshooting process, which can cause circuit failures. A wiring harness fixing device is provided to fix the high voltage wiring harness and the low voltage wiring harness in the battery pack. Figure 1 The wire harness fixing device of this embodiment includes a plurality of fixing shells arranged side by side.

[0024] Each mounting housing is formed with a separate wiring harness securing cavity 1 and wiring harness securing slot 2. The wiring harness securing cavities 1 of several mounting housings are interconnected, and the wiring harness securing slots 2 of several mounting housings are also interconnected. This allows the battery module's high-voltage wiring harness to be inserted and secured within the wiring harness securing cavity 1, while the battery module's low-voltage wiring harness is inserted and secured within the wiring harness securing slot 2, securing the high-voltage and low-voltage wiring harnesses separately. This not only aesthetically pleasing wiring harness distribution within the battery pack facilitates later troubleshooting, but also facilitates heat dissipation from the high-voltage wiring harness, avoiding heat dissipation difficulties caused by redundant crossover of high and low voltage wiring harnesses. When the wiring harness securing device is used in a battery pack, the mounting position of the mounting housing can be appropriately determined based on the specific situation. In this embodiment, the mounting housing is secured to the crossbar 14 of the battery pack housing. Alternatively, the mounting housing can be secured to the longitudinal beams of the battery pack housing. In this embodiment, the number and length of the mounting housings are not specifically limited and can be appropriately designed based on the specific situation.

[0025] In order to facilitate the fixation of the wiring harness, Figure 2 In this embodiment, each fixed shell includes an independently formed shell 1 3 and a shell 2 4. Of course, in other embodiments, each fixed shell may also be an integrally formed structure.

[0026] In this embodiment, the cross section of the shell 1 3 is U-shaped and its opening is arranged upward. The U-shaped bottom of the shell 1 3 is spaced apart with a number of fixing holes 12. The shell 1 3 can be fixed to the beam 14 through the fixing holes 12. Specifically, a number of bolts are passed through the fixing holes 12 and then through the beam 14 respectively, and then tightened with nuts. Figure 3 The bottom of the outer side of both side walls of the shell 3 is provided with a plurality of vertically arranged guide ribs 5, and the outer side of both side walls of the shell 3 is provided with a plurality of protrusions 7. The two side walls of the shell 3 are provided with a plurality of through holes extending from the top to the inside.

[0027] In this embodiment, the cross-section of the second housing 4 is also U-shaped, with its opening facing downward. The two side walls of the second housing 4 wrap around the outside of the two side walls of the first housing 3. Several guide grooves 6 are provided at the bottom of each side wall of the second housing 4. The multiple guide ribs 5 of the first housing 3 snap into the multiple guide grooves 6 of the second housing 4. Several grooves 8 are provided through each side wall of the second housing 4, which are compatible with the protrusions 7. The multiple protrusions 7 of the first housing 3 snap into the multiple grooves 8 of the second housing 4. Through holes 2 are provided on each side wall of the second housing 4, extending from the top toward the interior. The two through holes 2 are connected to the two corresponding through holes 1, and the corresponding through holes 1 and 2 cooperate to form a threading channel 9 for the passage of the wiring harness. A pressure plate 10 is integrally formed on both sides of the housing 2 (4) at the end facing away from the housing 1 (3). The two pressure plates 10 are positioned opposite each other, forming a wiring harness securing slot 2 between them. Reinforcing ribs 11 are formed on the side faces of the two pressure plates 10 that extend toward the side walls of the housing 2 (4). The U-shaped bottom of the housing 2 (4) is provided with a number of cable tie holes 13 spaced apart.

[0028] Through the above structural arrangement, when the wiring harness fixing device of this embodiment is used, the shell 13 is first fixed to the crossbeam 14 of the battery pack body by bolts, and the high-voltage wiring harness is arranged inside several shells 13, and the high-voltage wiring harness is led out at a through hole to facilitate the connection between the high-voltage wiring harness and the battery cell; the guide groove 6 of the shell 2 4 is matched with the guide rib 5 of the shell 1 3, and pressure is applied to the shell 2 4 so that the guide rib 5 is inserted into the guide groove 6, and the protrusion 7 is inserted into the groove 8. After the shell 2 4 and the shell 1 3 are buckled together, the high-voltage wiring harness passing through the through hole 1 can also be fixed; then the low-voltage wiring harness is arranged in the wiring harness fixing groove 2 at the top of several shells 2 4, and the cable tie is passed through the cable tie through hole 13 to fix the low-voltage wiring harness.

[0029] 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. When a component is considered to be "fixed to" another component, it may be directly fixed to the other component or there may be a central component.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are for the purpose of describing specific embodiments only and are not intended to limit this invention. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0032] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A wire harness fixing device, characterized in that: It comprises a plurality of fixed shells arranged side by side, each of the fixed shells being formed with a mutually independent wire harness fixing cavity (1) and a wire harness fixing groove (2), the wire harness fixing cavities (1) of the plurality of fixed shells being connected in sequence, and the wire harness fixing grooves (2) of the plurality of fixed shells being also connected in sequence.

2. The wire harness fixing device according to claim 1, characterized in that: Each of the fixed shells comprises a shell one (3) and a shell two (4), the cross sections of the shell one (3) and the shell two (4) are both U-shaped and the openings of the shell one (3) and the shell two (4) are arranged relative to each other, the two side walls of the shell one (3) are respectively detachably connected with the two side walls of the shell two (4) to form a wiring harness fixing cavity (1) between the shell one (3) and the shell two (4), and a wiring harness fixing groove (2) is formed on the side of the shell two (4) away from the shell one (3).

3. The wire harness fixing device according to claim 2, characterized in that: The outer side surfaces of both side walls of the shell 1 (3) are provided with guide ribs (5), and both sides of the shell 2 (4) are provided with guide grooves (6) near the opening ends thereof, and the two guide ribs (5) are respectively engaged in the two guide grooves (6).

4. The wire harness fixing device according to claim 2, characterized in that: Both side walls of the housing (3) are provided with protrusions (7), and both side walls of the housing (4) are provided with grooves (8) adapted to the protrusions (7), and the two protrusions (7) are respectively engaged in the two grooves (8).

5. The wire harness fixing device according to claim 2, characterized in that: Through-hole one is provided on both side walls of the housing one (3), and through-hole two is provided on both side walls of the housing two (4). The two through-holes one are respectively connected to the two through-holes two, and the corresponding through-holes one and two cooperate to form a threading channel (9) for the wiring harness to pass through.

6. The wire harness fixing device according to claim 2, characterized in that: A pressure plate (10) is formed on both side walls of the second shell (4) at one end away from the first shell (3), and the two pressure plates (10) are arranged opposite to each other with a spacing between the two pressure plates (10) to form a wiring harness fixing groove (2).

7. The wire harness fixing device according to claim 6, characterized in that: The two pressing plates (10) are both formed with reinforcing ribs (11) on the sides away from each other and extending to the second side wall of the shell (4).

8. The wire harness fixing device according to claim 2, characterized in that: The U-shaped bottom of the shell (3) is provided with a plurality of fixing holes (12) at intervals.

9. The wire harness fixing device according to claim 2, characterized in that: The U-shaped bottom of the second shell (4) is provided with a plurality of tie holes (13) at intervals.

10. A battery pack, characterized in that: The wire harness fixing device comprises the wire harness fixing device according to any one of claims 1 to 9.

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