High-voltage disconnect switch fixed assembly, power battery pack and vehicle

Abstract

This disclosure relates to a high-voltage power-off switch mounting assembly, a power battery pack, and a vehicle, belonging to the field of automotive safety technology. The high-voltage power-off switch mounting assembly includes a base with a first connecting structure. When the high-voltage power-off switch mounting assembly secures the high-voltage power-off switch to the housing of the power battery pack, the base is installed inside the housing, and the first connecting structure faces a window on the housing. The high-voltage power-off switch is detachably connected to the base from the outside of the housing via the window and the first connecting structure. The high-voltage power-off switch mounting assembly, power battery pack, and vehicle disclosed herein enable convenient replacement and maintenance of the high-voltage power-off switch.

Description

Technical Field

[0001] This disclosure relates to the field of automotive safety technology, and in particular to a high-voltage power-off switch fixing assembly, a power battery pack, and a vehicle. Background Technology

[0002] Collision safety has always been a critical aspect of new energy vehicles. To improve collision safety, in addition to increasing the structural strength of the entire vehicle and adding energy-absorbing structures, it is also necessary to quickly cut off the high voltage output from the power battery. Therefore, based on the principle of airbags, a high-voltage power-off switch device has been developed. This device can be triggered directly by the vehicle's airbag controller or controlled by the BMS battery management system within the power battery, achieving millisecond-level power cutoff.

[0003] When the high-voltage power-off switch is built into the power battery, if the high-voltage power-off switch is triggered by a minor collision, the high-voltage power-off switch in the battery pack must also be repaired or replaced during the repair of the vehicle. This necessitates the removal and installation of the battery pack, resulting in significant additional repair costs. Summary of the Invention

[0004] Therefore, this disclosure provides a high-voltage power-off switch fixing assembly, a power battery pack, and a vehicle, enabling convenient replacement and maintenance of the high-voltage power-off switch. The technical solution is as follows:

[0005] In a first aspect, a high-voltage power-off switch fixing assembly is provided, the high-voltage power-off switch fixing assembly including a base, the base being provided with a first connecting structure; When the high-voltage power-off switch fixing assembly fixes the high-voltage power-off switch to the housing of the power battery pack, the base is installed on the inner side of the housing, the first connecting structure faces the window of the housing, and the high-voltage power-off switch is detachably connected to the base from the outside of the housing through the window via the first connecting structure.

[0006] In some possible implementations, the base includes a support portion and two first electrical connection portions; The support is installed on the inner side of the housing, and the support has two process holes, both of which penetrate the inner and outer sides of the support. Each of the first electrical connection parts corresponds to one of the process holes, and the two first electrical connection parts are respectively installed in the corresponding process holes; When the high-voltage power-off switch fixing assembly fixes the high-voltage power-off switch to the housing, the two first electrical connection parts are electrically connected to the two second electrical connection parts of the high-voltage power-off switch respectively, and the two first electrical connection parts are also electrically connected to the two third electrical connection parts located inside the housing respectively. Preferably, the base is provided with two first connecting structures, each corresponding to a first electrical connection part, and the two first connecting structures are respectively disposed on the corresponding first electrical connection parts.

[0007] In some possible implementations, the support portion is integrally injection molded with the two first electrical connection portions; Preferably, the surface of the first electrical connection portion that contacts the support portion is provided with a resistance-increasing protrusion.

[0008] In some possible implementations, the high-voltage power-off switch fixing assembly further includes two first fixing members and two second fixing members; Both of the first connection structures are threaded through holes, and both of the first connection structures penetrate the inner and outer sides of the first electrical connection part. The first fixing member corresponds one-to-one with the first connecting structure and the second electrical connection part; The second fastener corresponds one-to-one with the first connecting structure and the third electrical connection part; When the high-voltage power-off switch fixing assembly fixes the high-voltage power-off switch to the housing, the first end of the first fixing member abuts against the corresponding second electrical connection part, and the second end of the first fixing member passes through the first fixing hole of the corresponding second electrical connection part and is threadedly engaged with the corresponding first connection structure; the first end of the second fixing member abuts against the corresponding third electrical connection part, and the second end of the second fixing member passes through the second fixing hole of the corresponding third electrical connection part and is threadedly engaged with the corresponding first connection structure.

[0009] In some possible implementations, the high-voltage power-off switch fixing assembly also includes an inner cover; The inner cover is detachably installed on the inside of the base, and the inner cover covers the two first electrical connection parts. Preferably, the inner cover is provided with two clearance grooves, and the clearance grooves correspond one-to-one with the third electrical connection part; When the high-voltage power-off switch fixing assembly fixes the high-voltage power-off switch to the housing, the third electrical connection portion extends out of the inner cover via the corresponding clearance groove.

[0010] In some possible implementations, the high-voltage power-off switch fixing assembly further includes an outer cover, which is detachably mounted on the outside of the housing when the high-voltage power-off switch fixing assembly fixes the high-voltage power-off switch to the housing, and the outer cover covers the window; Preferably, the outer cover is provided with a plug through hole, and when the high voltage power-off switch fixing assembly fixes the high voltage power-off switch to the housing, the plug of the wiring harness assembly passes through the plug through hole and is plugged into the high voltage power-off switch.

[0011] In some possible implementations, the outer cover is provided with a first sealing ring; When the high-voltage power-off switch fixing assembly fixes the high-voltage power-off switch to the housing, the first sealing ring surrounds the window and is clamped between the outer cover and the housing; Preferably, when the high-voltage power-off switch fixing assembly fixes the high-voltage power-off switch to the housing, an annular receiving groove is provided on the side of the outer cover facing the housing, and the first sealing ring is embedded in the annular receiving groove.

[0012] In some possible implementations, the outer cover is provided with a first guide portion, which is parallel to the central axis of the plug through hole; When the high-voltage power-off switch fixing assembly fixes the high-voltage power-off switch to the housing, the first guide portion cooperates with the second guide portion of the high-voltage power-off switch.

[0013] In a second aspect, a power battery pack is provided, the power battery pack including a high-voltage power-off switch, a housing, and a high-voltage power-off switch fixing assembly as described in any of the first aspects; The housing is provided with a window that extends through both the inner and outer sides of the housing; The high-voltage power-off switch fixing assembly is used to fix the high-voltage power-off switch to the housing, and the first connection structure of the high-voltage power-off switch fixing assembly faces the window. Preferably, when the high-voltage power-off switch fixing assembly includes an outer cover with a plug through hole, the power battery pack also includes a wiring harness assembly, the high-voltage power-off switch has a plug terminal, and the plug of the wiring harness assembly passes through the plug through hole and plugs into the plug terminal; Preferably, the high-voltage power-off switch further includes a second sealing ring, which surrounds the plug through hole and is clamped between the plug end and the outer cover.

[0014] Thirdly, a vehicle is provided, the vehicle including the power battery pack described in the second aspect.

[0015] In the solution disclosed herein, the base can be located inside the housing of the power battery pack. The high-voltage power-off switch can achieve power-off control through series connection between the base and the electrical circuit inside the power battery pack. Simultaneously, the first connecting structure faces the window of the housing, allowing the high-voltage power-off switch to be detachably connected to the base from the outside of the housing via the first connecting structure. When replacement or maintenance of the high-voltage power-off switch is required, it can be directly removed and installed from the outside of the housing, thus enabling convenient replacement and maintenance of the high-voltage power-off switch. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the base structure of a high-voltage power-off switch fixing assembly provided in an embodiment of this disclosure; Figure 2 This is an exploded structural diagram of a power battery pack provided in an embodiment of this disclosure; Figure 3 This is a schematic diagram of the structure of a power battery pack from the outside, according to an embodiment of this disclosure; Figure 4 This is a structural schematic diagram of a power battery pack from the inside, as provided in an embodiment of this disclosure; Figure 5 This is a schematic diagram of the disassembled structure of a base provided in an embodiment of this disclosure; Figure 6 This is a schematic diagram of a structure provided in this disclosure, showing the connection between a first electrical connection part and a high-voltage power-off switch and a third electrical connection part; Figure 7 This is a schematic diagram of a base connected to a high-voltage power-off switch according to an embodiment of the present disclosure; Figure 8 This is a schematic diagram of the structure of a base connected to a high-voltage power-off switch and a third electrical connection part according to an embodiment of this disclosure; Figure 9 This is a schematic diagram of the positional structure of an inner cover provided in an embodiment of this disclosure; Figure 10 This is a schematic diagram of the structure of a high-voltage power-off switch provided in an embodiment of this disclosure; Figure 11 This is a schematic diagram of the structure of an inner cover and a third electrical connection part provided in an embodiment of this disclosure; Figure 12This is a schematic diagram of the structure of an inner cover provided in an embodiment of this disclosure; Figure 13 This is a schematic diagram of the positional structure of an outer cover provided in an embodiment of this disclosure; Figure 14 This is a schematic diagram of the disassembled structure of an outer cover provided in an embodiment of this disclosure; Figure 15 This is a front view schematic diagram of a high-voltage power-off switch provided in an embodiment of this disclosure; Figure 16 This is a schematic diagram of the structure of a first guide portion and a second guide portion cooperating, provided in an embodiment of this disclosure.

[0018] Explanation of reference numerals in the attached figures 2. Base; 21. First electrical connection part; 211. Process hole; 212. Second snap-fit ​​structure; 213. Third fixing part; 214. Third fixing hole; 22. Support part; 221. Resistance-increasing protrusion; 23. First connection structure; 3. Inner cover; 31. Clearance groove; 32. First snap-fit ​​structure; 4. Outer cover; 41. Plug through hole; 42. First sealing ring; 43. Annular receiving groove; 44. First guide part; 45. Fourth fixing part; 46. Fifth fixing hole; 200. High-voltage power-off switch; 201. Second electrical connection part; 2011. First fixing member; 2012. First fixing hole; 202. Second guide part; 203. Plug-in end; 204. Second sealing ring; 300, Housing; 301, Window; 302, Fourth Fixing Hole; 400, Third Electrical Connection Part; 401, First Fixing Member; 402, Second Fixing Hole; 500, Wiring Harness Assembly; 501, Wiring Harness; 502, Plug. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0020] Firstly, this embodiment relates to a high-voltage power-off switch fixing assembly, as shown in the reference... Figure 1 As shown, the high-voltage power-off switch fixing assembly includes a base 2. The base 2 is provided with a first connecting structure 23. (Reference) Figures 2 to 4 As shown, when the high-voltage power-off switch fixing assembly fixes the high-voltage power-off switch 200 to the housing 300 of the power battery pack, the base 2 is installed inside the housing 300. The base 2 can be non-removably installed inside the housing 300 by welding, gluing, or other methods, or it can be detachably connected to the inside of the housing 300 by bolts, snap-fits, or other methods.

[0021] For example Figure 1 , Figure 3 and Figure 4 As shown, the outer contour of the base 2 can be approximately rectangular. Third fixing holes 214 can be provided at the four corners of the base 2, and fourth fixing holes 302 can be provided on the housing 300. The high-voltage power-off switch fixing assembly can include third fixing members 213. The third fixing members 213 and the fourth fixing holes 302 correspond one-to-one with the third fixing holes 214. The first end of each third fixing member 213 can abut against the inner cover 3, and the second end of each third fixing member 213 can pass through the corresponding third fixing hole 214 and extend into the corresponding fourth fixing hole 302, thereby fixing the base 2 to the housing 300. The third fixing member 213 can be a bolt, screw, or pin, etc.

[0022] For example, the third fastener 213 can be a bolt. For example, the nut at the first end of the bolt abuts against the base 2, and the second end of the bolt passes through the corresponding third fixing hole 214 and is screwed into the fourth fixing hole 302, wherein the fourth fixing hole 302 is a bolt hole.

[0023] In another example, the third fastener 213 can be a screw. For example, the screw cap at the first end of the screw abuts against the base 2, and the second end of the screw passes through the corresponding third fixing hole 214 and is screwed into the fourth fixing hole 302, where the fourth fixing hole 302 is a screw hole.

[0024] In another example, the third fastener 213 can be a pin. For example, the pin cap at the first end of the pin abuts against the base 2, and the second end of the pin passes through the corresponding third fixing hole 214 and is riveted into the fourth fixing hole 302.

[0025] Combination Figure 1 As shown, the first connecting structure 23 is directly opposite the window 301 of the housing 300. The high-voltage power-off switch 200 is detachably connected to the base 2 from the outside of the housing 300 through the window 301 and the first connecting structure 23.

[0026] As described above, the base 2 can be located inside the housing 300 of the power battery pack. The high-voltage power-off switch 200 can be connected in series with the electrical circuit inside the power battery pack through the base 2, thereby enabling power-off control of the electrical circuit to be achieved, so as to cut off the high voltage output of the power battery pack in time when a collision occurs. At the same time, the first connecting structure 23 is directly opposite the window 301 of the housing 300, so that the high-voltage power-off switch 200 can be detachably connected to the base 2 from the outside of the housing 300 through the window 301 via the first connecting structure 23. When it is necessary to replace or repair the high-voltage power-off switch 200, the high-voltage power-off switch 200 can be directly removed and installed from the outside of the housing 300, thus realizing convenient replacement and repair of the high-voltage power-off switch 200.

[0027] In some examples, reference Figure 1 and Figure 4 As shown, the base 2 includes a support portion 21 and two first electrical connection portions 22. (Combined) Figure 3 and Figure 4 As shown, the support 21 is mounted on the inner side of the housing 300. (Reference) Figure 4 As shown, the support portion 21 is provided with two process holes 211, and both process holes 211 penetrate through the inner and outer sides of the support portion 21. For example, Figure 1 As shown, the third fixing hole 214 can be located in the support part 21.

[0028] Continue to refer to Figure 1 and Figure 5 As shown, the first electrical connection part 22 corresponds one-to-one with the process hole 211, and the two first electrical connection parts 22 are respectively installed in the corresponding process hole 211.

[0029] Among them, reference Figure 6 As shown, when the high-voltage power-off switch fixing assembly fixes the high-voltage power-off switch 200 to the housing 300, the two first electrical connection parts 22 are electrically connected to the two second electrical connection parts 201 of the high-voltage power-off switch 200, respectively. The two first electrical connection parts 22 are also electrically connected to the two third electrical connection parts 400 located inside the housing 300, respectively. The two third electrical connection parts 400 can be used to electrically connect to the positive and negative terminals of the electrical circuit within the power battery pack, respectively.

[0030] In this way, the high-voltage power-off switch 200 located on the outside of the housing 300 and the electrical circuit located on the inside of the housing 300 are connected in series through two first electrical connection parts 22 and two third electrical connection parts 400, thereby enabling power-off control of the electrical circuit.

[0031] In some examples, reference Figure 1 As shown, the base 2 is provided with two first connecting structures 23, each corresponding to a first electrical connection part 22. The two first connecting structures 23 are respectively disposed on their respective first electrical connection parts 22. Thus, the first connecting structures 23 disposed on the first electrical connection parts 22 enable direct connection between the first electrical connection parts 22 and the second electrical connection parts 201, which improves the stability of the contact between the first electrical connection parts 22 and the second electrical connection parts 201, thereby improving the stability of the electrical connection between them and enhancing product quality.

[0032] In some examples, the support portion 21 and the two first electrical connection portions 22 are integrally injection molded. For example, the first electrical connection portions 22 can be conductive metal blocks, and the support portion 21 can be made of plastic materials such as polypropylene (PP), polyethylene (PE), or polystyrene (PS). During injection molding, the two first electrical connection portions 22 can be pre-embedded in the mold, and then molten plastic is injected into the mold. After cooling, the base 2 is manufactured. This facilitates the manufacturing of the base 2 and also helps to improve the stability of the connection between the support portion 21 and the two first electrical connection portions 22, thereby improving product quality.

[0033] In some examples, reference Figure 5 As shown, a resistance-increasing protrusion 221 is provided on the surface where the first electrical connection portion 22 contacts the support portion 21. For example, the resistance-increasing protrusion 221 can be integrally formed on the surface where the first electrical connection portion 22 contacts the support portion 21. The resistance-increasing protrusion 221 can be grid-shaped or wave-shaped, etc. This helps prevent the first electrical connection portion 22 from shifting within the process hole 211, improves the stability of the connection between the support portion 21 and the first electrical connection portion 22, and thus helps improve product quality.

[0034] In some examples, reference Figure 3 , Figure 6 , Figure 7 and Figure 8 As shown, the high-voltage power-off switch fixing assembly also includes two first fixing members 2011 and two second fixing members 401. Both first connecting structures 23 are threaded through holes, and both first connecting structures 23 penetrate the inner and outer sides of the first electrical connection portion 22. The first fixing members 2011 correspond one-to-one with the first connecting structures 23 and the second electrical connection portion 201. The second fixing members 401 correspond one-to-one with the first connecting structures 23 and the third electrical connection portion 400.

[0035] When the high-voltage power-off switch fixing assembly fixes the high-voltage power-off switch 200 to the housing 300, refer to Figure 3 As shown, the first end of the first fixing member 2011 abuts against the corresponding second electrical connection part 201, and the second end of the first fixing member 2011 passes through the first fixing hole 2012 of the corresponding second electrical connection part 201 and is threadedly engaged with the corresponding first connecting structure 23. (Reference) Figure 4 and combined Figure 6 As shown, the first end of the second fastener 401 abuts against the corresponding third electrical connection 400, and the second end of the second fastener 401, through the second fixing hole 402 of the corresponding third electrical connection 400, is threaded into the corresponding first connection structure 23. For example, the second fastener 401 can be a bolt or a screw.

[0036] Thus, since both first connecting structures 23 are threaded through holes penetrating both the inner and outer sides of the first electrical connection portion 22, the first fixing member 2011 and the second fixing member 401 can share the corresponding first connecting structure 23, thereby achieving a reliable connection between the first electrical connection portion 22, the second electrical connection portion 201, and the third electrical connection portion 400. On the one hand, it eliminates the need for excessive through holes in the first electrical connection portion 22, simplifying its manufacturing process; on the other hand, since both the second electrical connection portion 201 and the third electrical connection portion 400 are directly connected to the first electrical connection portion 22, the stability of the electrical connection between the second electrical connection portion 201 and the third electrical connection portion 400 and the first electrical connection portion 22 can be improved, which is beneficial to improving product quality.

[0037] In some examples, reference Figure 9 As shown, the high-voltage power-off switch fixing assembly also includes an inner cover 3. Combined with... Figure 4 As shown, the inner cover 3 is detachably installed inside the base 2, and the inner cover 3 covers the two first electrical connection parts 22. For example, the inner cover 3 can be fixedly connected to the inside of the base 2 by means of bolts or snap-fit.

[0038] like Figure 12 and Figure 1 As shown, the inner cover 3 can be provided with four first snap-fit ​​structures 32, and the base 2 can be provided with second snap-fit ​​structures 212, with each second snap-fit ​​structure 212 corresponding to one of the first snap-fit ​​structures 32. The four first snap-fit ​​structures 32 can be integrally formed on the inner cover 3. The four second snap-fit ​​structures 212 can be located in pairs on opposite sides of the support portion 22, and the four first snap-fit ​​structures 32 can respectively snap into their corresponding second snap-fit ​​structures 212, thereby fixing the inner cover 3 to the support portion 22 and covering the two first electrical connection portions 22.

[0039] In the first snap-fit ​​structure 32 and the second snap-fit ​​structure 212, one can be a snap hook and the other can be a snap groove. For example Figure 1 and Figure 12 As shown, the first snap-fit ​​structure 32 can be a snap hook, and the second snap-fit ​​structure 212 can be a snap slot. However, in other possible embodiments, the second snap-fit ​​structure 212 can be a snap hook, and the first snap-fit ​​structure 32 can be a snap slot.

[0040] Thus, the inner cover 3 can achieve the effects of dust prevention and electrical isolation, which is beneficial to improving the performance stability and operational safety of the power battery pack.

[0041] In some examples, reference Figure 11 and Figure 12 As shown, the inner cover 3 is provided with two clearance grooves 31, each corresponding to a third electrical connection part 400. (Combined) Figure 9As shown, when the high-voltage power-off switch fixing assembly secures the high-voltage power-off switch 200 to the housing 300, the third electrical connection part 400 extends out of the inner cover 3 via the corresponding clearance groove 31. This facilitates the connection of the third electrical connection part 400 with the corresponding electrical components.

[0042] In some examples, reference Figure 13 As shown, the high-voltage power-off switch fixing assembly also includes an outer cover 4. Combined with... Figure 3 As shown, when the high-voltage power-off switch fixing assembly fixes the high-voltage power-off switch 200 to the housing 300, the outer cover 4 is detachably installed on the outside of the housing 300, and the outer cover 4 covers the window 301.

[0043] Thus, the outer cover 4 can achieve waterproof and dustproof effects, preventing moisture and dust from entering the space where the high-voltage power-off switch 200 is located, which is conducive to improving the performance stability and operational safety of the power battery pack.

[0044] For example, the outer cover 4 can be detachably connected to the housing 300 by means of bolts, snap-fits, etc. Figure 14 As shown, the outer contour of the outer cover 4 can be approximately rectangular, and fifth fixing holes 46 can be respectively provided at the four corners of the outer cover 4. The fourth fixing holes 302 can all penetrate through the inner and outer sides of the housing 300. The high-voltage power-off switch fixing assembly can include fourth fixing members 45. The fifth fixing holes 46 and fourth fixing members 45 correspond one-to-one with the fourth fixing holes 302. The first end of each fourth fixing member 45 can abut against the outer cover 4, and the second end of each fourth fixing member 45 can pass through the corresponding fifth fixing hole 46 and extend into the corresponding fourth fixing hole 302. The fourth fixing member 45 can be a bolt or screw, etc. Thus, each fourth fixing member 45 can reliably fix the outer cover 4 to the housing 300. Simultaneously, removing each fourth fixing member 45 allows for the disassembly of the outer cover 4.

[0045] In addition, since the fourth fixing member 45 and 213 share the fourth fixing hole 302, there is no need to provide too many through holes on the housing 300, which helps to simplify the manufacturing process of the housing 300.

[0046] In some examples, reference Figure 14 As shown, the outer cover 4 is provided with a plug through hole 41, which can pass through both the inner and outer sides of the outer cover 4. Combined with... Figure 13 and Figure 3 As shown, when the high-voltage power-off switch fixing assembly fixes the high-voltage power-off switch 200 to the housing 300, the plug 501 of the wiring harness assembly 500 passes through the plug through hole 41 and is plugged into the high-voltage power-off switch 200.

[0047] Thus, the plug through-hole 41 allows the vehicle's airbag controller to be directly connected to the high-voltage power-off switch 200 via the wiring harness assembly 500, without the need for an additional adapter connector. Furthermore, when it is necessary to replace or repair the high-voltage power-off switch 200, simply unplug the plug 501 from the wiring harness assembly 500 and remove the outer cover 4 to easily install or remove the high-voltage power-off switch 200.

[0048] In some examples, the outer cover 4 is provided with a first sealing ring 42. When the high-voltage power-off switch fixing assembly secures the high-voltage power-off switch 200 to the housing 300, refer to... Figure 2 , Figure 3 and Figure 13 As shown, the first sealing ring 42 surrounds the window 301 and is clamped between the outer cover 4 and the housing 300. Thus, the first sealing ring 42 enhances the waterproof and dustproof capabilities of the outer cover 4.

[0049] In some examples, reference Figure 14 and combined Figure 2 As shown, when the high-voltage power-off switch fixing assembly fixes the high-voltage power-off switch 200 to the housing 300, an annular receiving groove 43 is provided on the side of the outer cover 4 facing the housing 300, and the first sealing ring 42 is embedded in the annular receiving groove 43. In this way, the annular receiving groove 43 can limit the first sealing ring 42, preventing the first sealing ring 42 from misalignment, displacement, or other problems that could lead to sealing failure.

[0050] In some examples, reference Figure 14 As shown, the outer cover 4 is provided with a first guide portion 44, which is parallel to the central axis of the plug through hole 41.

[0051] Combination Figure 16 As shown, when the high-voltage power-off switch fixing assembly fixes the high-voltage power-off switch 200 to the housing 300, the first guide portion 44 cooperates with the second guide portion 202 of the high-voltage power-off switch 200. Therefore, the first guide portion 44 can restrict the outer cover 4 from circumferential rotation, which helps improve the convenience and accuracy of installing the outer cover 4.

[0052] In this configuration, one of the first guide portion 44 and the second guide portion 202 can be a guide block, and the other can be a guide groove. For example... Figure 10 and Figure 14 As shown, the second guide portion 202 can be a guide block, and the first guide portion 44 can be a guide groove. However, in other possible embodiments, the first guide portion 44 can be a guide block, and the second guide portion 202 can be a guide groove.

[0053] In this embodiment, the base 2 can be located inside the housing 300 of the power battery pack. The high-voltage power-off switch 200 can be connected in series with the electrical circuit inside the power battery pack through the base 2, thereby enabling power-off control of the electrical circuit to be achieved, so as to cut off the high voltage output of the power battery pack in time when a collision occurs. At the same time, the first connecting structure 23 is directly opposite the window 301 of the housing 300, so that the high-voltage power-off switch 200 can be detachably connected to the base 2 from the outside of the housing 300 through the window 301 via the first connecting structure 23. When it is necessary to replace or repair the high-voltage power-off switch 200, the high-voltage power-off switch 200 can be directly removed and installed from the outside of the housing 300, thus realizing convenient replacement and repair of the high-voltage power-off switch 200.

[0054] Secondly, refer to Figure 2 As shown, a power battery pack is provided, which includes a high-voltage power-off switch 200, a housing 300, and a high-voltage power-off switch fixing assembly as described in the first aspect. The housing 300 is provided with a window 301, which extends through the inner and outer sides of the housing 300.

[0055] Combination Figure 3 and Figure 4 As shown, the high-voltage power-off switch fixing assembly is used to fix the high-voltage power-off switch 200 to the housing 300, and the first connection structure 23 of the high-voltage power-off switch fixing assembly faces the window 301.

[0056] As described above, the base 2 can be located inside the housing 300 of the power battery pack. The high-voltage power-off switch 200 can be connected in series with the electrical circuit inside the power battery pack through the base 2, thereby enabling power-off control of the electrical circuit to be achieved, so as to cut off the high voltage output of the power battery pack in time when a collision occurs. At the same time, the first connecting structure 23 is directly opposite the window 301 of the housing 300, so that the high-voltage power-off switch 200 can be detachably connected to the base 2 from the outside of the housing 300 through the window 301 via the first connecting structure 23. When it is necessary to replace or repair the high-voltage power-off switch 200, the high-voltage power-off switch 200 can be directly removed and installed from the outside of the housing 300, thus realizing convenient replacement and repair of the high-voltage power-off switch 200.

[0057] In some examples, reference Figure 13 and Figure 14 As shown, when the high-voltage power-off switch fixing assembly includes an outer cover 4 with a plug through hole 41, the power battery pack also includes a wiring harness assembly 500. (Reference) Figure 10 As shown, the high-voltage power-off switch 200 has a plug-in terminal 203. Combined with... Figure 2 , Figure 3 and Figure 13 As shown, the plug 501 of the wiring harness assembly 500 passes through the plug through hole 41 and is plugged into the plug terminal 203.

[0058] In some examples, reference Figure 10 and Figure 15 As shown, the high-voltage power-off switch 200 also includes a second sealing ring 204. Combined with... Figure 14 As shown, the second sealing ring 204 surrounds the plug through hole 41, and the second sealing ring 204 is clamped between the plug end 203 and the outer cover 4. Thus, the second sealing ring 204 can improve the sealing performance of the outer cover 4, preventing moisture, dust and other impurities from entering the inside of the outer cover 4 through the plug through hole 41.

[0059] For example Figure 15 and Figure 16 As shown, the high-voltage power-off switch 200 may include two concentrically arranged second sealing rings 204. The second sealing rings 204 may be embedded in the surface of the plug-in end 203.

[0060] In this embodiment, the base 2 can be located inside the housing 300 of the power battery pack. The high-voltage power-off switch 200 can be connected in series with the electrical circuit inside the power battery pack through the base 2, thereby enabling power-off control of the electrical circuit to be achieved, so as to cut off the high voltage output of the power battery pack in time when a collision occurs. At the same time, the first connecting structure 23 is directly opposite the window 301 of the housing 300, so that the high-voltage power-off switch 200 can be detachably connected to the base 2 from the outside of the housing 300 through the window 301 via the first connecting structure 23. When it is necessary to replace or repair the high-voltage power-off switch 200, the high-voltage power-off switch 200 can be directly removed and installed from the outside of the housing 300, thus realizing convenient replacement and repair of the high-voltage power-off switch 200.

[0061] Thirdly, a vehicle is provided, the vehicle including the power battery pack of the second aspect.

[0062] In this embodiment, the base 2 can be located inside the housing 300 of the power battery pack. The high-voltage power-off switch 200 can be connected in series with the electrical circuit inside the power battery pack through the base 2, thereby enabling power-off control of the electrical circuit to be achieved, so as to cut off the high voltage output of the power battery pack in time when a collision occurs. At the same time, the first connecting structure 23 is directly opposite the window 301 of the housing 300, so that the high-voltage power-off switch 200 can be detachably connected to the base 2 from the outside of the housing 300 through the window 301 via the first connecting structure 23. When it is necessary to replace or repair the high-voltage power-off switch 200, the high-voltage power-off switch 200 can be directly removed and installed from the outside of the housing 300, thus realizing convenient replacement and repair of the high-voltage power-off switch 200.

[0063] It should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical 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 application according to the specific circumstances.

[0064] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0065] In the description of this specification, the references to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the embodiments or examples that are included in at least one embodiment or example of this application.

[0066] The above are merely embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this application should be included within the protection scope of this application.

Claims

1. A high-voltage power-off switch fixing assembly, characterized in that, The high-voltage power-off switch fixing assembly includes a base (2), and the base (2) is provided with a first connecting structure (23). When the high-voltage power-off switch fixing assembly fixes the high-voltage power-off switch (200) to the housing (300) of the power battery pack, the base (2) is installed on the inner side of the housing (300), the first connecting structure (23) is facing the window (301) of the housing (300), and the high-voltage power-off switch (200) is detachably connected to the base (2) from the outside of the housing (300) through the window (301) via the first connecting structure (23).

2. The high-voltage power-off switch fixing assembly according to claim 1, characterized in that, The base (2) includes a support (21) and two first electrical connection parts (22); The support part (21) is installed on the inner side of the housing (300). The support part (21) is provided with two process holes (211), and both process holes (211) penetrate the inner and outer sides of the support part (21). The first electrical connection part (22) corresponds one-to-one with the process hole (211), and the two first electrical connection parts (22) are respectively installed in the corresponding process hole (211); When the high-voltage power-off switch fixing assembly fixes the high-voltage power-off switch (200) to the housing (300), the two first electrical connection parts (22) are electrically connected to the two second electrical connection parts (201) of the high-voltage power-off switch (200) respectively, and the two first electrical connection parts (22) are also electrically connected to the two third electrical connection parts (400) located inside the housing (300) respectively; Preferably, the base (2) is provided with two first connection structures (23), each of which corresponds to a first electrical connection part (22), and the two first connection structures (23) are respectively disposed on the corresponding first electrical connection parts (22).

3. The high-voltage power-off switch fixing assembly according to claim 2, characterized in that, The support part (21) and the two first electrical connection parts (22) are integrally injection molded; Preferably, the surface of the first electrical connection portion (22) that contacts the support portion (21) is provided with a resistance-increasing protrusion (221).

4. The high-voltage power-off switch fixing assembly according to claim 2, characterized in that, The high-voltage power-off switch fixing assembly also includes two first fixing members (2011) and two second fixing members (401). Both of the first connecting structures (23) are threaded through holes, and both of the first connecting structures (23) penetrate the inner and outer sides of the first electrical connection part (22); The first fastener (2011) corresponds one-to-one with the first connecting structure (23) and the second electrical connection part (201); The second fastener (401) corresponds one-to-one with the first connecting structure (23) and the third electrical connection part (400); When the high-voltage power-off switch fixing assembly fixes the high-voltage power-off switch (200) to the housing (300), the first end of the first fixing member (2011) abuts against the corresponding second electrical connection part (201), and the second end of the first fixing member (2011) passes through the first fixing hole (2012) of the corresponding second electrical connection part (201) and is threadedly engaged with the corresponding first connection structure (23); the first end of the second fixing member (401) abuts against the corresponding third electrical connection part (400), and the second end of the second fixing member (401) passes through the second fixing hole (402) of the corresponding third electrical connection part (400) and is threadedly engaged with the corresponding first connection structure (23).

5. The high-voltage power-off switch fixing assembly according to any one of claims 2 to 4, characterized in that, The high-voltage power-off switch fixing assembly also includes an inner cover (3). The inner cover (3) is detachably installed on the inside of the base (2), and the inner cover (3) covers the two first electrical connection parts (22); Preferably, the inner cover (3) is provided with two clearance grooves (31), and the clearance grooves (31) correspond one-to-one with the third electrical connection part (400); When the high voltage power-off switch fixing assembly fixes the high voltage power-off switch (200) to the housing (300), the third electrical connection part (400) extends out of the inner cover (3) via the corresponding clearance groove (31).

6. The high-voltage power-off switch fixing assembly according to claim 1, characterized in that, The high-voltage power-off switch fixing assembly also includes an outer cover (4). When the high-voltage power-off switch fixing assembly fixes the high-voltage power-off switch (200) to the housing (300), the outer cover (4) is detachably installed on the outside of the housing (300) and the outer cover (4) covers the window (301). Preferably, the outer cover (4) is provided with a plug through hole (41). When the high voltage power cut-off switch fixing assembly fixes the high voltage power cut-off switch (200) to the housing (300), the plug (501) of the wiring harness assembly (500) passes through the plug through hole (41) and is plugged into the high voltage power cut-off switch (200).

7. The high-voltage power-off switch fixing assembly according to claim 6, characterized in that, The outer cover (4) is provided with a first sealing ring (42); When the high voltage power-off switch fixing assembly fixes the high voltage power-off switch (200) to the housing (300), the first sealing ring (42) surrounds the window (301), and the first sealing ring (42) is clamped between the outer cover (4) and the housing (300); Preferably, when the high voltage power-off switch fixing assembly fixes the high voltage power-off switch (200) to the housing (300), the outer cover (4) is provided with an annular receiving groove (43) on the side facing the housing (300), and the first sealing ring (42) is embedded in the annular receiving groove (43).

8. The high-voltage power-off switch fixing assembly according to claim 6, characterized in that, The outer cover (4) is provided with a first guide portion (44), which is parallel to the central axis of the plug through hole (41); When the high voltage power-off switch fixing assembly fixes the high voltage power-off switch (200) to the housing (300), the first guide portion (44) cooperates with the second guide portion (202) of the high voltage power-off switch (200).

9. A power battery pack, characterized in that, The power battery pack includes a high-voltage power-off switch (200), a housing (300), and a high-voltage power-off switch fixing assembly as described in any one of claims 1 to 8; The housing (300) is provided with a window (301), which extends through the inner and outer sides of the housing (300); The high-voltage power-off switch fixing assembly is used to fix the high-voltage power-off switch (200) to the housing (300), and the first connection structure (23) of the high-voltage power-off switch fixing assembly faces the window (301). Preferably, when the high-voltage power-off switch fixing assembly includes an outer cover (4) with a plug through hole (41), the power battery pack also includes a wiring harness assembly (500), the high-voltage power-off switch (200) has a plug end (203), and the plug (501) of the wiring harness assembly (500) passes through the plug through hole (41) and plugs into the plug end (203); Preferably, the high-voltage power-off switch (200) further includes a second sealing ring (204) surrounding the plug through hole (41) and being clamped between the plug end (203) and the outer cover (4).

10. A vehicle, characterized in that, The vehicle includes the power battery pack as described in claim 9.

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