A CCS wire harness fixing structure, a battery pack, and a battery pack

Abstract

This utility model relates to the field of battery technology, and more particularly to a CCS wiring harness fixing structure, a battery pack, and a battery module. The CCS wiring harness fixing structure includes a busbar, a top cover, and a plastic structural component. The busbar connects the terminals of adjacent battery cells; the top cover is positioned on top of the battery cells; and the plastic structural component is located between the busbar and the top cover, with clearance grooves and routing grooves corresponding to the detection lines of the battery cells. Since a busbar is located between the plastic structural component and the top cover, and the busbar connects to the terminals of the battery cells, it is necessary to connect the detection lines to the busbar or the battery cells. The clearance grooves facilitate the lead-out of the detection lines while also limiting their movement. The routing grooves regulate the wiring harness routing, ensuring a neat arrangement of the wiring harness on the plastic structural component, improving the stability of the wiring harness fixing, and preventing poor contact or breakage of the detection lines.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a CCS wire harness fixing structure, a battery pack, and a battery module. Background Technology

[0002] A CCS (Cell Connection System), also known as an integrated busbar or battery cover assembly, is a system that integrates battery connections onto a single board. It primarily integrates components such as busbars and control circuits (voltage and temperature acquisition) within a battery pack, forming a single module. Its main functions include high-voltage series and parallel connection of individual battery cells, battery temperature sampling, individual battery voltage sampling, and overcurrent protection, providing crucial data for the BMS (Battery Management System). A CCS mainly consists of signal acquisition components, plastic structural parts, and busbars.

[0003] After the detection lines of individual cells inside the battery box are led out, they need to be connected to the summary line. The summary line is usually arranged on the plastic structural parts. However, in related technologies, the wiring harness on the plastic structural parts is messy and the wiring harness is not stable, which can easily lead to poor contact or even disconnection.

[0004] Therefore, there is an urgent need for a CCS wire harness fixing structure to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to propose a CCS wire harness fixing structure, a battery pack, and a battery stack, which can standardize the wiring of the wire harness, make the wire harness arrangement on the plastic structural parts neat, and improve the fixing stability of the wire harness.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A CCS wire harness fixing structure, comprising:

[0008] Busbar, the busbar being used to connect the terminals of adjacent battery cells;

[0009] A top cover is provided on top of the battery cell;

[0010] A plastic structural component is disposed between the busbar and the top cover, and the plastic structural component is provided with a clearance groove and a wiring groove corresponding to the detection line of the battery cell.

[0011] A battery pack includes the aforementioned CCS wiring harness fixing structure.

[0012] A battery pack comprising the battery pack described above.

[0013] This utility model has at least the following beneficial effects:

[0014] The CCS wiring harness fixing structure, battery pack, and battery stack provided in this application have a busbar between the plastic structural component and the top cover. The busbar is connected to the terminal post of the battery cell. Therefore, it is necessary to connect the test wire to the busbar or the battery cell. The clearance groove can facilitate the lead-out of the test wire and also limit the test wire. The wiring groove is used to standardize the wiring harness routing, make the wiring harness on the plastic structural component neat, improve the fixing stability of the wiring harness, and avoid poor contact or breakage of the test wire. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0016] Figure 1 A cross-sectional view of the battery pack provided in an embodiment of this utility model;

[0017] Figure 2 for Figure 1 Enlarged view of a portion of point A in the middle;

[0018] Figure 3 A schematic diagram of the battery pack provided for an embodiment of this utility model (excluding the housing);

[0019] Figure 4 for Figure 3 Enlarged view of a section at point B in the middle;

[0020] Figure 5 This is a schematic diagram of the structure of the plastic structural component provided in the embodiment of this utility model;

[0021] Figure 6 for Figure 5 Enlarged view of a section at point C.

[0022] In the picture:

[0023] 1. Plastic structural component; 11. Clearance groove; 12. Cable routing groove; 13. Fixing hole; 14. Support protrusion; 15. Explosion-proof valve opening; 16. Blocking component; 17. First positioning structure; 18. Separator; 19. Support groove; 110. Clearance position; 111. Through hole; 2. Busbar; 21. Bending part; 22. Connecting hole; 23. Second positioning structure; 3. Top cover; 4. Fixing component; 5. Flame retardant component; 10. Battery cell; 20. Box body; 30. Detection line; 40. Wiring harness. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0025] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0028] like Figures 1 to 4 As shown, the CCS wiring harness fixing structure includes a busbar 2, a top cover 3, and a plastic structural component 1. The busbar 2 is used to connect the terminals of adjacent battery cells 10. The top cover 3 is used to be installed on the top of the battery cell 10. The plastic structural component 1 is installed between the busbar 2 and the top cover 3. The plastic structural component 1 is provided with a clearance groove 11 and a wiring groove 12 corresponding to the detection line 30 of the battery cell 10.

[0029] Since a busbar 2 is provided between the plastic structural component 1 and the top cover 3, and the busbar 2 is connected to the terminal post of the battery cell 10, it is necessary to connect the detection line 30 to the busbar 2 or the battery cell 10. The clearance groove 11 can facilitate the lead-out of the detection line 30 while also limiting the detection line 30. The wiring groove 12 is used to standardize the wiring of the wire harness 40, so that the wire harness 40 on the plastic structural component 1 is neatly arranged, improves the fixing stability of the wire harness 40, and avoids poor contact or breakage of the detection line 30.

[0030] Understandably, the wiring trough 12 is a through trough, which facilitates the arrangement of the wiring harness 40 within it. Each busbar 2 is equipped with a detection line 30 for the battery cell 10. The detection lines 30 of the battery cell 10 converge in the wiring trough 12 to form the wiring harness 40. The detection lines 30 of the battery cell 10 are connected to the busbar 2 to transmit information such as the temperature and current of the busbar 2 to the wiring harness 40. The wiring harness 40 is electrically connected to the BMS (Battery Management System) to receive the information obtained by the wiring harness 40.

[0031] It should be noted that the communication between the BMS and related components such as Bus 2 relies on protocols such as CAN bus and RS232. For example, the CAN bus is used for high-speed data transmission within the vehicle system (up to 1 Mbps), while RS232 is often used for debugging connections between the BMS and the host computer.

[0032] like Figure 4 As shown, in some embodiments, the CCS wiring harness fixing structure further includes a fixing member 4, and a fixing hole 13 is provided on the bottom wall of the wiring groove 12. The fixing member 4 passes through the fixing hole 13 to fix the wiring harness 40 of the battery cell 10.

[0033] The fastener 4 and the fixing hole 13 work together to fix the wiring harness 40 of the battery cell 10, preventing the wiring harness 40 from coming off the wiring channel 12 after being bumped, which would cause the battery box 20 to become messy. Therefore, the fastener 4 and the fixing hole 13 can make the wiring inside the battery box 20 neater, and the fastener 4 can also ensure the stability of the wiring harness 40.

[0034] For example, the fastener 4 includes a cable tie. One end of the cable tie passes through two adjacent fixing holes 13 and is snapped into place with the other end, thereby securing the wire harness 40.

[0035] Of course, in other embodiments, the fixing member 4 is a wire clamp, wire clamp strap, wire clip, fastening strap, or steel strip. When the fixing member 4 is a wire clamp or wire clamp strap, it can fix one or more wire bundles 40. When the fixing member 4 is a wire clip, it can fix a single wire at the bottom or side wall of the cable tray 12. When the fixing member 4 is a fastening strap or steel strip, it can bundle and fix multiple wire bundles 40.

[0036] In some other embodiments, in order to prevent the wiring harness 40 from detaching from the wiring trough 12, the top cover 3 may optionally be provided with a stop rib. When the top cover 3 is installed on the plastic structural component 1, the stop rib blocks the opening of the wiring trough 12, preventing the wiring harness 40 from detaching from the wiring trough 12 in the working environment.

[0037] In some embodiments, the distance h between the wall of the wiring trough 12 facing the explosion-proof valve opening 15 and the wall of the explosion-proof valve opening 15 facing the wiring trough 12 is not less than 3mm.

[0038] The distance h between the cable tray 12 and the explosion-proof valve opening 15 should not be too small. If it is too small, it will cause the explosion-proof valve to conduct heat to the wire harness 40, which will affect the normal operation of the wire harness 40. At the same time, it can also prevent the explosion-proof valve from directly spraying high-temperature substances onto the wire harness 40 after the explosion, causing the wire harness 40 to melt or short-circuit.

[0039] In some embodiments, the corners of the clearance groove 11 are chamfered.

[0040] For example, the chamfered surface can be either a rounded corner or an angled corner.

[0041] like Figure 4 As shown, the clearance groove 11 includes a trapezoidal groove and a rectangular groove, wherein the small end of the trapezoidal groove is connected to the rectangular groove. It can be understood that the opening of the clearance groove 11 is in the shape of a flared mouth.

[0042] The chamfering can prevent the detection line 30 from being cut by the corner of the clearance groove 11 when it is installed. In addition, the chamfering can also guide the installation of the detection line 30.

[0043] Continue to refer to Figure 4 In some embodiments, at least part of the busbar 2 arches upward in the middle to form an arched bend 21, and a clearance groove 11 is provided on both sides of the bend 21.

[0044] Understandably, the busbar 2 with the bend 21 is connected to two adjacent battery cells 10 respectively. Among them, the battery cell 10 located on the outermost side of the battery pack can be connected to the battery management system (BMS) through the busbar 2 with the bend 21.

[0045] After the busbar 2 is welded to the terminal post of the battery cell 10, the battery cell 10 will expand slightly during normal charging and discharging. Along the arrangement direction of the battery cells 10, the positions of adjacent battery cells 10 will change. The arched bending part 21 can absorb stress deformation and effectively avoid stress pulling on the welded part due to displacement of the battery cells 10.

[0046] In addition, busbar 2 is also provided with connection hole 22, such as Figure 4As shown, the busbar 2 with the bent portion 21 has two connection holes 22, so that part of the detection line 30 can be located within the connection hole 22, thereby improving the connection stability between the detection line 30 and the busbar 2 and preventing the busbar 2 from separating from the detection line 30 due to bumps in the battery cell 10. The busbar 2 connected to a single battery cell 10 is provided with one connection hole 22.

[0047] like Figure 2 As shown, in some embodiments, the CCS wire harness fixing structure further includes a flame-retardant component 5, which is disposed between the plastic structural component 1 and the top cover 3.

[0048] For example, the material of the flame retardant component 5 can be a thermoplastic polymer material, a fiber-reinforced composite material, or a composite structural material.

[0049] Among them, the flame-retardant component 5 is a flame-retardant plate. Along the height direction of the battery cell 10, the projection of the flame-retardant plate on the end face of the battery cell 10 overlaps with the projection of the plastic structural component 1 on the end face of the battery cell 10.

[0050] Through the above-mentioned solutions, the flame-retardant component 5 can actively suppress the spread of flames and heat and passively block fire sources and provide physical protection, thereby inhibiting the spread of flames and blocking heat transfer. In addition, the flame-retardant component 5 can also prevent high-temperature substances from being sprayed onto the top cover 3, causing the top cover 3 to melt or burn.

[0051] like Figures 2 to 6 As shown, in some embodiments, the plastic structural component 1 is provided with a support protrusion 14 for supporting the flame-retardant component 5, and the support protrusion 14 is provided with a relief groove 11.

[0052] Understandably, the support protrusion 14 is used to support the flame retardant component 5. In order to enable the detection line 30 to be smoothly connected to the busbar 2, a relief groove 11 needs to be provided on the support protrusion 14 to prevent the flame retardant component 5 from pressing on the detection line 30.

[0053] The plastic structural component 1 is provided with protective components, which are located on both sides of the bend 21 along the width direction of the busbar 2. The protective components are situated at both ends of the arched bend 21, and their height is greater than the height of the bend 21. The protective components are formed by supporting protrusions 14.

[0054] In some embodiments, the width of the wiring groove 12 ranges from 3mm to 5mm.

[0055] For example, the width of the wiring trough 12 can be 3mm, 4mm or 5mm, and is not specifically limited in this embodiment.

[0056] When the width of the cable tray 12 is 3mm, it ensures that while accommodating the cable harness 40, the cable tray 12 can limit the cable harness 40 on both sides along its length.

[0057] The plastic structural component 1 is provided with an explosion-proof valve opening 15, which is positioned directly opposite the explosion-proof valve of the battery cell 10.

[0058] The explosion-proof valve is an important safety component of the battery cell 10. Its main function is to automatically open when the internal pressure of the battery cell 10 rises abnormally (such as due to overcharging, short circuit, high temperature, etc.) to release the internal pressure and prevent the battery cell 10 from exploding. The explosion-proof valve opening 15 on the plastic structural component 1 corresponds to the position of the explosion-proof valve on multiple battery cells 10, thereby ensuring that no obstruction will prevent the normal operation of the explosion-proof valve when it is open, and avoiding the risk of electrical failure.

[0059] It is understandable that the volume of the explosion-proof valve of the battery cell 10 on the first end face of the battery cell 10 is smaller than the projected area of ​​the explosion-proof valve opening 15 on the first end face of the battery cell 10, or the volume of the explosion-proof valve of the battery cell 10 on the first end face of the battery cell 10 is equal to the projected area of ​​the explosion-proof valve opening 15 on the first end face of the battery cell 10. This ensures that the explosion-proof valve opening 15 will not obstruct the opening of the explosion-proof valve during the opening process of the explosion-proof valve of the battery cell 10.

[0060] The wiring trough 12 is located on both sides of the explosion-proof valve opening 15. This arrangement of the wiring trough 12 makes the CCS wiring harness fixing structure more compact. Compared with setting the wiring trough 12 on the side of the busbar 2 away from the explosion-proof valve opening 15, this arrangement can reduce the overall volume of the CCS wiring harness fixing structure, thereby making the battery pack arrangement more compact.

[0061] In some embodiments, the plastic structural member 1 is provided with a blocking member 16 for separating adjacent explosion-proof valve openings 15. The height of the blocking member 16 extends toward the top cover 3.

[0062] For example, the blocking member 16 includes a blocking protrusion. After the battery cell 10 thermally runs away, the explosion-proof valve is opened. After the high-temperature material is ejected from the explosion-proof valve, the blocking protrusion can prevent the high-temperature position from being ejected to the explosion-proof valve position of the adjacent battery cell 10 or the nearby battery cell 10. In this way, the explosion-proof valve of other battery cells 10 can be prevented, thereby protecting the safety of the nearby battery cells 10.

[0063] For example, the shape of the blocking protrusion is rectangular, but in other embodiments it can also be circular or other shapes.

[0064] like Figure 4As shown, in some embodiments, the plastic structural component 1 is provided with a first positioning structure 17, and the busbar 2 is provided with a second positioning structure 23. The first positioning structure 17 and the second positioning structure 23 cooperate to position and install the busbar 2.

[0065] The first positioning structure 17 and the second positioning structure 23 work together to position the busbar 2, thereby preventing the busbar 2 from shifting from the pole during welding, which facilitates the installation of the busbar 2.

[0066] In some embodiments, in the first positioning structure 17 and the second positioning structure 23, one is a positioning hole and the other is a positioning post, with the positioning post located inside the positioning hole.

[0067] For example, when the first positioning structure 17 is a positioning hole and the second positioning structure 23 is a positioning post, the height of the positioning post is less than the length of the positioning hole. This can prevent the positioning post from abutting against the top cover 3 and affecting the installation of the flame retardant component 5. The positioning post can achieve the purpose of positioning the busbar 2.

[0068] For example, when the first positioning structure 17 is a positioning post and the second positioning structure 23 is a positioning hole, the height of the positioning post can be greater than the length of the positioning hole. This facilitates the insertion of the positioning post into the positioning hole to achieve the positioning of the busbar 2. Of course, in some other embodiments, the height of the positioning post can be less than the length of the positioning hole, thus reducing the amount of material used for the positioning post while still achieving the positioning of the busbar 2. In other embodiments, the height of the positioning post is the same as the length of the positioning hole. This ensures that the positioning post can be inserted into the positioning hole to achieve the positioning of the busbar 2.

[0069] Of course, in some embodiments, to prevent the busbar 2 from detaching from the plastic structural component 1 during movement, the positioning post engages with the positioning hole. The end of the positioning post facing the positioning hole is provided with an elastic claw. After the elastic claw passes through the positioning hole, the elastic claw fixes the busbar 2 to the plastic structural component 1.

[0070] The elastic claws and the positioning post are integrally injection molded. Two or more elastic claws are arranged circumferentially along the positioning post, evenly distributed on the post. For example, three elastic claws are used, allowing them to be securely fastened within the positioning holes.

[0071] In some embodiments, the plastic structural member 1 is provided with a support groove 19 for accommodating the busbar 2 and a through hole 111 for allowing the terminal post of the battery cell 10 to pass through.

[0072] The plastic structural component 1 is located at the bottom of the busbar 2. The plastic structural component 1 has a support groove 19, and the bottom of the support groove 19 is provided with a through hole 111 for inserting the pole post. The pole post is located in the through hole 111 and can be welded to the busbar 2. The support groove 19 can provide stable support for the busbar 2, thereby preventing part of the busbar 2 from being suspended. This can prevent the busbar 2 from collapsing due to the bottom being suspended, thereby improving the stability of the busbar 2.

[0073] It should be noted that the bottom of the support groove 19 is provided with a through hole 111, and the side of the pole that is welded to the busbar 2 is set to be coplanar with the bottom of the support groove 19, or the side of the pole that is welded to the busbar 2 extends beyond the bottom of the support groove 19. This can ensure that the busbar 2 and the pole are welded together and avoid the problem of incomplete welding. In addition, it can also ensure that the bottom of the support groove 19 fits with the busbar 2 to support the busbar 2.

[0074] The depth of the support groove 19 is greater than the thickness of the busbar 2.

[0075] It should be noted that when battery cells 10 are connected in series via bus 2, the outermost bus 2 is typically used to connect to an external circuit or battery management system (BMS). Specifically, the outermost bus 2 is connected to either the positive or negative terminal of the battery pack to transfer the overall voltage of the battery pack to the external circuit or to receive current input from the external circuit. This connection method ensures the electrical continuity of the entire battery pack, allowing current to flow smoothly from one battery cell 10 to the next, and ultimately to an external load or charging device.

[0076] Therefore, when the busbar 2 corresponding to the support groove 19 is connected to only one battery cell 10 terminal, a through hole 111 is provided in the support groove 19. When the busbar 2 corresponding to the support groove 19 is connected to two adjacent battery cell 10 terminals respectively, two through holes 111 are provided in a single support groove 19, and the two through holes 111 correspond to the terminals of two adjacent battery cells 10 respectively.

[0077] In addition, in order to facilitate the installation of the busbar 2 on the plastic structural component 1, the plastic structural component is also provided with a clearance 110, which is located on the groove wall of the support groove 19.

[0078] like Figure 6 As shown, in some embodiments, a separator 18 for isolating the busbar 2 is provided in the support groove 19, and the separator 18 is located between adjacent busbars 2.

[0079] Along the length extension direction of the plastic structural component 1, the busbars 2 are spaced apart, and the separator 18 is located between two adjacent busbars 2 to physically isolate the two adjacent busbars 2 arranged along the length extension direction of the plastic structural component 1.

[0080] The separator 18 includes a separator plate, the top surface of which is positioned higher than the top surface of the portion of the busbar 2 connected to the terminal post. This allows two adjacent separator plates to limit the movement of a single busbar 2, preventing displacement due to vibration during battery pack operation.

[0081] When a single battery cell 10 is connected to the busbar 2 on either side of the separator, a clearance position 110 is provided on the side of the separator facing the busbar 2. In this way, the clearance position 110 corresponding to the extension direction of the busbar 2 is connected to the clearance position 110 located on the separator, which facilitates the installation of the busbar 2.

[0082] Furthermore, the separator 18 also includes a separator block, which is fixed to the top of the separator plate. Both the separator block and the separator plate are rectangular, extending from the top cover 3 towards the manifold 2. The projection of the separator block onto the separator plate is located within the area enclosed by the top surface of the separator plate. The height of the separator block is the same as the height of the plastic structural component 1, thus providing good support for the top cover 3.

[0083] Along the thickness direction of busbar 2, the projection of the partition block on the top surface of the partition plate is located in the area enclosed by the top surface of the partition plate, that is, the partition 18 is a boss as a whole.

[0084] The above-described design isolates adjacent busbars 2. Since the overall height of the separator 18 is greater than the height of the busbar 2, the separator 18 also supports the top cover 3 located on top of the busbar 2, preventing partial collapse of the top cover 3 and short-circuiting the busbar 2. The separator 18 prevents the busbar 2 from shifting due to vibration during battery pack operation. The separator 18 is essentially a boss.

[0085] It should be noted that the plastic structural component 1 is a one-piece injection molded structure. The support groove 19, through hole 111, first positioning structure 17, explosion-proof valve opening 15, blocking component 16, support protrusion 14, clearance groove 11, and wiring groove 12 are formed simultaneously during the injection molding process. The structures protruding from the wiring groove 12, such as the first positioning structure 17 and support protrusion 14, are hollow structures. This reduces the overall weight of the plastic structural component 1, thereby preventing an excessive increase in the overall weight of the battery pack.

[0086] This embodiment also provides a battery pack, which includes the CCS wiring harness fixing structure provided in the above embodiment.

[0087] The battery pack consists of multiple battery cells 10. Multiple battery cells with similar capacity and internal resistance are connected in series or in parallel to form the battery pack.

[0088] Since the battery pack includes a CCS wiring harness fixing structure, which includes a busbar 2, a top cover 3, and a plastic structural component 1, and a busbar 2 is provided between the plastic structural component 1 and the top cover 3, and the busbar 2 is connected to the terminal post of the battery cell 10, it is necessary to connect the detection line 30 to the busbar 2 or the battery cell 10. The clearance groove 11 can facilitate the lead-out of the detection line 30 while also limiting the detection line 30. The wiring groove 12 is used to standardize the wiring of the wiring harness 40, so that the wiring harness 40 on the plastic structural component 1 is neatly arranged, improves the fixing stability of the wiring harness 40, and avoids poor contact or breakage of the detection line 30.

[0089] Because it includes the CCS wiring harness fixing structure described above, the battery pack of this embodiment of the invention has all the advantages and beneficial effects of the above embodiments, which will not be repeated here.

[0090] like Figures 1 to 6 As shown, this embodiment also provides a battery pack, which includes the battery pack provided in the above embodiment.

[0091] The battery pack includes a CCS wiring harness fixing structure, which includes a busbar 2, a top cover 3, and a plastic structural component 1. Since the busbar 2 is provided between the plastic structural component 1 and the top cover 3, and the busbar 2 is connected to the terminal post of the battery cell 10, it is necessary to connect the detection line 30 to the busbar 2 or the battery cell 10. The clearance groove 11 can facilitate the lead-out of the detection line 30 while also limiting the detection line 30. The wiring groove 12 is used to standardize the wiring of the wiring harness 40, so that the wiring harness 40 on the plastic structural component 1 is neatly arranged, improving the fixing stability of the wiring harness 40 and avoiding poor contact or breakage of the detection line 30.

[0092] The battery pack also includes a housing 20, in which the battery pack provided in this embodiment is housed, and a top cover 3 is provided on the top of the housing 20.

[0093] It should be noted that the housing 20 refers to a semi-enclosed structure made of materials such as metal and plastic, which is the physical carrier of the battery pack. Its design and manufacturing must meet the safety, reliability and functionality requirements of the battery pack in different usage scenarios.

[0094] It is understood that the battery pack includes a battery pack composed of multiple battery cells 10 connected in series and / or in parallel, a battery management system (BMS), a thermal management system, an electrical connection system (high-voltage / low-voltage connectors, wiring harnesses 40, etc.), structural components (casing, brackets, etc.), and protective components, etc., and the above components are placed in the housing 20 and sealed with a cover plate to form a complete functional unit that can directly output electrical energy.

[0095] Battery packs, as a type of rechargeable battery, are the power source for new energy vehicles.

[0096] Since it includes the battery pack described above, the battery pack of this embodiment of the invention has all the advantages and beneficial effects of the above embodiments, which will not be repeated here.

[0097] Furthermore, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A CCS wire harness fixing structure, characterized in that, include: Busbar (2), the busbar (2) is used to connect the terminals of adjacent battery cells (10); A top cover (3) is provided on the top of the battery cell (10); A plastic structural component (1) is disposed between the busbar (2) and the top cover (3). The plastic structural component (1) is provided with a clearance groove (11) and a wiring groove (12) corresponding to the detection line (30) of the battery cell (10).

2. The CCS wire harness fixing structure according to claim 1, characterized in that, The CCS wiring harness fixing structure also includes a fixing member (4), and a fixing hole (13) is provided on the bottom wall of the wiring groove (12). The fixing member (4) passes through the fixing hole (13) to fix the wiring harness (40) of the battery cell (10).

3. The CCS wire harness fixing structure according to claim 2, characterized in that, The fastener (4) includes cable ties.

4. The CCS wire harness fixing structure according to claim 1, characterized in that, The corners of the clearance groove (11) are chamfered.

5. The CCS wire harness fixing structure according to any one of claims 1-4, characterized in that, At least part of the busbar (2) arches upward in the middle to form an arched bend (21), and the bend (21) is provided with the clearance groove (11) on both sides.

6. The CCS wire harness fixing structure according to any one of claims 1-4, characterized in that, The CCS wire harness fixing structure also includes a flame-retardant component (5), which is disposed between the plastic structural component (1) and the top cover (3).

7. The CCS wire harness fixing structure according to claim 6, characterized in that, The plastic structural component (1) is provided with a support protrusion (14) for supporting the flame-retardant component (5), and the support protrusion (14) is provided with the clearance groove (11).

8. The CCS wire harness fixing structure according to any one of claims 1-4, characterized in that, The width of the wiring groove (12) ranges from 3mm to 5mm.

9. The CCS wire harness fixing structure according to any one of claims 1-4, characterized in that, The plastic structural component (1) is provided with an explosion-proof valve opening (15), which is positioned opposite to the explosion-proof valve of the battery cell (10).

10. The CCS wire harness fixing structure according to claim 9, characterized in that, The distance h between the wall of the wiring groove (12) facing the explosion-proof valve opening (15) and the wall of the explosion-proof valve opening (15) facing the wiring groove (12) is not less than 3mm.

11. A battery pack, characterized in that, Includes the CCS wire harness fixing structure as described in any one of claims 1-10.

12. A battery pack, characterized in that, Includes the battery pack as described in claim 11.

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