Protective cap, electrical system and vehicle

Abstract

The application relates to a protective cap, an electrical system and a vehicle. The protective cap comprises a covering part for at least partially covering a wire harness terminal, a cap body connected to the covering part, a cap opening end of the cap body being used for at least partially buckling on a storage battery, and a limiting part connected to the cap body and at least partially located in the cap body, the limiting part being used for sleeving a wiring structure of the storage battery. The protective cap is firmly fixed relative to the storage battery.

Description

Technical Field

[0001] This application relates to the field of electrical protection technology, and in particular to protective caps, electrical systems, and vehicles. Background Technology

[0002] Batteries typically transmit power to external devices via wiring harnesses. A battery includes terminals, and the ends of the wiring harness are usually called harness terminals. To ensure the operational stability and safety of the automotive battery and extend its lifespan, rubber protective caps can be used on the positive terminal of the harness, providing crucial protection.

[0003] The existing solution for rubber protective caps is to combine them with the positive terminal of the wiring harness. After the vehicle is assembled, the rubber protective cap covers the positive terminal and thus provides protection.

[0004] In the theoretically designed assembly state, the rubber protective cap can effectively isolate the terminals and wiring harness terminals from external factors such as humid air and water droplets, reducing the risk of electrode oxidation or short circuit, thereby extending the battery's service life; the rubber protective cap can cover the positive terminal wiring harness interface, preventing the intrusion of foreign objects such as dust and dirt, avoiding the risk of short circuit and vehicle fire.

[0005] However, in actual installation, it was found that the rubber protective cap has a certain degree of flexibility, and the way it is fitted onto the positive terminal of the wiring harness makes it difficult to restrict the accurate circumferential and axial position. When assembling it with the positive terminal, it cannot be positioned quickly and accurately. Furthermore, the rubber protective cap is not securely fixed to the battery, and is prone to shifting, misalignment, or warping; adjusting the assembly also affects assembly efficiency. In addition, because the fixation is not secure, the consistency of the assembled vehicle cannot be guaranteed, and it is also aesthetically unappealing. Utility Model Content

[0006] Therefore, it is necessary to provide protective caps, electrical systems, and vehicles to address the issues of battery and wiring harness assembly and use.

[0007] In a first aspect, this application provides a protective cap for protecting wiring harness terminals and a battery. The protective cap includes: a covering portion for at least partially covering the wiring harness terminals; a cap body connected to the covering portion, the cap opening of the cap body for at least partially fastening to the battery; and a limiting portion connected to the cap body and at least partially located within the cap body, the limiting portion for engaging with the wiring structure of the battery.

[0008] By setting a limiting part, the limiting part itself and the cap body can be quickly and accurately positioned on the battery. It is also connected to the wire harness terminal through the covering part. The cap body is used to cover the connection between the wire harness terminal and the battery, and the cap is securely fixed to the battery, reducing the probability of displacement or warping. The assembly efficiency is high and the consistency is good during batch assembly.

[0009] In some embodiments, the limiting part and the cap body are an integral structure, the limiting part is a rubber limiting part, and the limiting part is interference-fitted with the wiring structure of the battery.

[0010] This design facilitates the installation and removal of the limiting part and ensures accurate positioning. The protective cap has a simple structure and is easy to manufacture.

[0011] In some embodiments, the cap body includes a top wall facing away from the cap opening; a portion of the limiting portion protrudes to the side of the top wall facing away from the cap opening.

[0012] This design results in a shorter cap and higher structural stability, ensuring that the limiting part can accommodate the wiring structure.

[0013] In some embodiments, the limiting part has a mating hole and a guide cone hole, the guide cone hole facing the cap opening end, the mating hole communicating with the guide cone hole, the mating hole extending within the limiting part and penetrating to the side of the top wall opposite to the cap opening end.

[0014] This design facilitates assembly, and the top wall helps to strengthen the locking mechanism.

[0015] In some embodiments, the cap body includes an outer peripheral wall, which includes a first outer peripheral portion connected to the covering portion and a second outer peripheral portion surrounding the limiting portion; the outer peripheral wall is provided with a first notch and a second notch, which at least partially separate the first outer peripheral portion and the second outer peripheral portion, respectively.

[0016] This design helps to allow the limiting part to be pried open relative to the covering part, making assembly and disassembly easier.

[0017] In some embodiments, the second outer peripheral portion is used to fasten to the battery, the first outer peripheral portion is longer than the second outer peripheral portion in the direction facing the cap opening, and the covering portion protrudes obliquely from the first outer peripheral portion.

[0018] With this configuration, the protective cap is installed behind the battery, and the second outer perimeter can be on the battery. The overall position of the wiring harness is lower, which is conducive to compact installation and reduces the space occupied.

[0019] In some embodiments, the covering portion is adjacent to the first notch; wherein the side of the first notch corresponding to the first outer periphery is a plane, and the other side of the first notch is an arc surface for enlarging the slot; and / or, the side of the second notch corresponding to the second outer periphery is a plane, and the other side of the second notch is an arc surface for enlarging the slot.

[0020] This design makes it easy to bend the cap, extending its lifespan with repeated use.

[0021] In some embodiments, the cap body includes a first top wall surrounded by a first outer periphery and a second top wall surrounded by a second outer periphery, the first top wall being thicker than the second top wall.

[0022] This design enhances the connection strength of the covering portion, and makes the second outer periphery and the second top wall easier to flip.

[0023] In some embodiments, the cap body includes a top wall facing away from the cap opening; a covering portion adjacent to the first notch; a second outer periphery including a first wall panel circumferentially close to the first notch and a second wall panel distant from the first notch; the first wall panel is shorter than the second wall panel in the direction facing away from the top wall.

[0024] This design allows it to fit the battery casing and also makes it easier to pry open the cap at the first wall panel.

[0025] Secondly, this application provides an electrical system comprising: a battery including a wiring structure; wiring harness terminals connected to the wiring structure; and the aforementioned protective cap.

[0026] The electrical system described in this application has good protective performance, is adaptable to the environment, and has a long service life.

[0027] Thirdly, this application provides a vehicle that includes the aforementioned electrical system.

[0028] The vehicle implemented in this application has good safety, assembly, and maintenance performance. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of an electrical system according to one or more embodiments;

[0030] Figure 2 for Figure 1 A schematic sectional view at section AA;

[0031] Figure 3 A schematic exploded view of an electrical system according to one or more embodiments;

[0032] Figure 4 This is a schematic top view of a protective cap according to one or more embodiments;

[0033] Figure 5 for Figure 4 A schematic sectional view at section BB;

[0034] Figure 6 A schematic isometric view of a protective cap according to one or more embodiments;

[0035] Figure 7 This is a schematic diagram of the structure of a protective cap according to one or more embodiments;

[0036] Figure 8 This is a schematic flowchart of a method for assembling an electrical system according to one or more embodiments;

[0037] Figure 9 This is a schematic diagram of the relationships between vehicles according to one or more embodiments.

[0038] Explanation of reference numerals in the attached drawings: 1. Covering part; 2. Cap body; 201. Cap opening end; 202. First notch; 203. Second notch; 204. Clearance opening; 210. Top wall; 220. Outer peripheral wall; 221. First outer peripheral part; 222. Second outer peripheral part; 21. First top wall; 22. Second top wall; 23. First wall panel; 24. Second wall panel;

[0039] 3. Limiting part; 301. Mating hole; 302. Guide cone hole;

[0040] 1000 Electrical system; 1100 Storage battery; 1110 Housing; 1120 Terminal; 1130 Nut; 1200 Wire harness; 1210 Cable; 1220 Wire harness terminal; 1221 Clamp; 1222 Terminal hole; 1300 Protective cap; 2000 Vehicle; 2100 Electrical equipment. Detailed Implementation

[0041] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0042] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, 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, and therefore should not be construed as a limitation of this application.

[0043] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0044] Furthermore, the terms "first," "second," and "third," etc., 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. For example, a first notch may also be referred to as a second notch, and a second notch may also be referred to as a first notch. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] In this application, unless otherwise expressly specified and limited, the terms "connected," "linked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; a flexible connection or a rigid connection along at least one direction; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium, or a direct connection with an intermediate medium present; and they can also refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. The terms "installed," "set," "fixed," etc., can be broadly understood as connection. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0046] refer to Figure 1 , Figure 1 An electrical system according to an embodiment of this application is shown. For ease of description, a spatial rectangular coordinate system XYZ is established, where the Z-axis can be parallel to the vertical direction and the XY plane can be parallel to the horizontal plane.

[0047] Combination Figure 2 , Figure 3 As shown, exemplarily, the electrical system 1000 includes a battery 1100 and a wiring harness 1200. The battery 1100 may be a lead-acid battery or other types of batteries. The wiring harness 1200 is connected to the battery 1100 and is capable of transmitting power.

[0048] The battery 1100 may include a housing 1110 and terminals 1120. The housing 1110 may have two terminals 1120, one positive and the other negative. The terminals 1120 may be threaded. The electrical system 1000 or the battery 1100 may include a nut 1130. The nut 1130 may be screwed onto the terminal 1120. The nut 1130 and the terminal 1120 may form a wiring structure, or the wiring structure may only include the terminal 1120.

[0049] The wiring harness 1200 may include a cable 1210 and a wiring harness terminal 1220. (Reference) Figure 3 The wire harness terminal 1220 may include a clamp 1221, which can be clamped to the outer periphery of the cable 1210 to fix the wire harness terminal 1220 to the cable 1210 and make an electrical connection. The wire harness terminal 1220 may have an L-shaped structure, with the clamp 1221 located on one arm of the L-shaped structure, and the other arm may have a terminal hole 1222. The terminal hole 1222 is used to fit onto the terminal post 1120, such as the positive terminal post. A nut 1130 can lock the wire harness terminal 1220. The wire harness 1200 may also include an insulating sheath covering the cable 1210.

[0050] The electrical system 1000 may also include a protective cap 1300, which is used to protect the wiring harness terminals and the battery, thereby improving the protection of the electrical system 1000.

[0051] refer to Figure 4 , Figure 5 , Figure 6 and Figure 7 This application provides a protective cap 1300, which may include a covering part 1, a cap body 2, and a limiting part 3. The protective cap 1300 can be a one-piece structure, and can be a rubber protective cap. It has a simple structure, is easy to manufacture, and is easy to use.

[0052] The covering portion 1 is used to connect the wire harness terminal 1220, specifically, it at least partially covers the wire harness terminal 1220. The covering portion 1 may correspond to the portion of the wire harness terminal 1220 that has a clamp 1221, and may also extend to the cable 1210.

[0053] The cap body 2 is connected to the covering part 1. The cap body 2 can be generally formed into a groove shape, and the groove space can be recessed along the Z-axis direction. (Reference) Figure 2 The cap body 2 has a cap opening 201 that points downwards along the Z-axis. The cap body 2 may include a top wall 210 and an outer peripheral wall 220. The lower end of the outer peripheral wall 220 may be used to form the cap opening 201, and the top wall 210 may completely cover the upper end of the outer peripheral wall 220. The top wall 210 may project along the Z-axis to cover the portion of the wire harness terminal 1220 extending out of the covering portion 1 and the wiring structure. (Reference) Figure 1The cap body 2 has a cap opening 201 for at least partially fastening to the battery 1100. The wiring harness 1200 can be designed on the side of the battery 1100. A part of the cap body 2 can be suspended on one side of the battery 1100.

[0054] The limiting part 3 is connected to the cap body 2. The limiting part 3 can be connected to the top wall 210 or the outer peripheral wall 220. The limiting part 3 is at least partially located inside the cap body 2 and is used to connect to the wiring structure of the battery 1100. The limiting part 3 itself and the cap body 2 can be quickly and accurately positioned on the battery 1100, resulting in high assembly efficiency and good consistency during batch assembly.

[0055] The protective cap 1300 is securely fixed to the battery 1100, and the probability of the protective cap 1300 shifting or warping is low. The cap body 2 can effectively cover the connection between the wire harness terminal 1220 and the battery 1100, and also covers the wire harness terminal 1220 through the covering part 1.

[0056] The limiting part 3 and the cap body 2 are an integral structure. The limiting part 3 can be a rubber limiting part, for example, it can be integrally molded by injection molding. The protective cap 1300 has a simple structure and is easy to manufacture. In other embodiments, for example, the limiting part 3 can be nested in the cap body 2.

[0057] The limiting part 3 is interference-fitted to the wiring structure of the battery 1100. It can be interference-fitted to the terminal 1120 or to the nut 1130. The interference fit makes the limiting part 3 easy to install and remove relative to the wiring structure, and the positioning is more accurate in the installed state.

[0058] The covering portion 1 can be a clamping portion. The covering portion 1 can have an axially penetrating slot, which facilitates radial mounting to the wire harness 1200. The covering portion 1 can be, for example, a spiral winding portion, which can be wound for mounting.

[0059] refer to Figure 5 The cap body 2 includes a top wall 210, which is opposite to the cap opening end 201 along the Z-axis. A portion of the limiting part 3 protrudes to the side of the top wall 210 opposite to the cap opening end 201. Along the Z-axis, the cap body 2 is relatively short, thus ensuring that the outer peripheral wall 220 has a certain height without being excessively high, combined with… Figure 2 As shown, the terminal 1120 can be inserted into the body of the cap 2 along the Z-axis direction, and exemplarily, it can protrude from the top wall 210.

[0060] The limiting part 3 has a mating hole 301, which extends along the Z-axis within the limiting part 3 and penetrates to the side of the top wall 210 opposite to the cap opening 201. The mating hole 301 can accommodate the end of the terminal 1120 and can be interference-fitted with the terminal 1120. The cap body 2 is stably sleeved on the wiring structure along the XY plane, ensuring high structural stability of the cap 1300. The limiting part 3 can be completely closed, ensuring that the wiring structure is contained within it and preventing the top wall 210 from being lifted and deformed.

[0061] The limiting part 3 may also have a guide cone hole 302 facing the cap end 201. The end of the terminal 1120 may be chamfered. The opening of the guide cone hole 302 may be larger than the outer diameter of the terminal 1120. The mating hole 301 communicates with the guide cone hole 302, making it easy for the limiting part 3 to be assembled to the terminal 1120.

[0062] The guide cone hole 302 has a shallow extension depth within the limiting part 3, and may remain only within the cap body 2 without extending to the top wall 210. The mating hole 301 can be a round hole. In the limiting part 3, the portion located on the inner side of the top wall 210 along the Z-axis is thicker, while the portion located on the outer side of the top wall 210 along the Z-axis is thinner.

[0063] refer to Figure 6 The cap body 2 can be divided into a first region β and a second region γ along the XY plane, and the two parts of the cap body 2 can be bent and deformed. The outer peripheral wall 220 of the cap body 2 includes a first outer peripheral portion 221 and a second outer peripheral portion 222 arranged circumferentially. The first outer peripheral portion 221 is located in the first region β, and the second outer peripheral portion 222 is located in the second region γ. The top wall 210 may include a first top wall 21 and a second top wall 22, the first top wall 21 may be located in the first region β, and the second top wall 22 may be located in the second region γ.

[0064] The covering portion 1 can be connected to the first region β, specifically to the first outer peripheral portion 221. The limiting portion 3 can be disposed in the second region γ, specifically in the second top wall 22. The second outer peripheral portion 222 surrounds the limiting portion 3. The outer peripheral wall 220 has a first notch 202 and a second notch 203, which can be disposed at the boundary line between the two regions, making it easier for the outer peripheral wall 220 to bend at the boundary line.

[0065] Along the Z-axis, the notch is recessed from the cap end 201 toward the top wall 210, and the notch can extend directly to the top wall 210, completely separating the first outer peripheral portion 221 and the second outer peripheral portion 222. The notch helps the limiting portion 3 to be pried relative to the covering portion 1, facilitating assembly and disassembly operations.

[0066] refer to Figure 6 and Figure 7The first notch 202 and the second notch 203 partially separate the first outer peripheral portion 221 and the second outer peripheral portion 222, respectively. The outer peripheral wall 220 can continuously surround the top wall 210, which helps to improve the structural strength of the top wall 210, improve the folding resistance of the cap 2, improve the service life, and improve the tightness of the fastening to the battery 1100.

[0067] Combination Figure 1 The second outer peripheral portion 222 is used to fasten to the battery 1100, and the first outer peripheral portion 221 extends outward. After the protective cap 1300 is installed on the battery 1100, the second outer peripheral portion 222 can be on the battery 1100, and the cable 1210 of the wiring harness 1200 can be on one side of the battery 1100, for example, on the side along the Y-axis direction.

[0068] Along the Z-axis, the first outer peripheral portion 221 is longer than the second outer peripheral portion 222; or, along the direction in which the cap end 201 faces, the end of the first outer peripheral portion 221 protrudes further than the end of the second outer peripheral portion 222, which helps to better cover the wire harness terminal 1220 downwards. The axis of the covering portion 1 can be inclined downwards along the XZ plane, and the covering portion 1 can protrude obliquely from the first outer peripheral portion 221, so that the overall position of the wire harness 1200 is lower, which is conducive to compact installation and reduces the space occupied.

[0069] refer to Figure 6 The covering portion 1 is located adjacent to the first notch 202 and away from the second notch 203 along the first outer periphery 221. The opening of the first notch 202 faces the same direction as the cap end 201. The side of the first notch 202 corresponding to the first outer periphery 221 is a plane, which can extend along the Z-axis direction. The other side of the first notch 202 is an arc surface for widening the opening, which can be tilted relative to the Z-axis direction and can be a convex arc.

[0070] The side of the second notch 203 corresponding to the second outer periphery 222 is a plane, which can extend along the Z-axis. The other side of the second notch 203 is an arc surface for widening the notch, which can be a convex arc. The arc surface facilitates bending the cap body 2; it helps to improve the flipping resistance at the notch and increase the service life after repeated use. The arc surfaces of the two notches are set in opposite directions, making it easy for the square cap body to be tilted up from the corners.

[0071] The first notch 202 is located near the notch of the covering portion 1. The second outer peripheral portion 222 may include a plurality of wall panels arranged circumferentially. When the outer peripheral wall 220 is square, the second outer peripheral portion 222 may be approximately U-shaped, or may have other shapes. The first wall panel 23 is circumferentially close to the first notch 202, and the second wall panel 24 is relatively far from the first notch 202 relative to the first wall panel 23. The second wall panel 24 may be deflected relative to the first wall panel 23. Along the direction away from the top wall 210, the first wall panel 23 is shorter than the second wall panel 24, which facilitates flipping up the cap 2 from the first wall panel 23.

[0072] The housing 1110 may include a protruding ridge, which is disposed next to the terminal block 1120. The side of the wiring harness terminal 1220 may abut against or be limited by the protruding ridge. The outer peripheral wall 220 may be provided with a clearance opening 204, which may be limited between the first wall plate 23 and the second wall plate 24 to avoid the protruding ridge. The outer peripheral wall 220 can be adapted to the housing 1110 of the battery 1100. The first wall plate 23 can still play a protective role.

[0073] The first top wall 21 of the cap body 2 is surrounded by the first outer periphery 221, and the second top wall 22 is surrounded by the second outer periphery. The first top wall 21 may be thicker than the second top wall 22, which helps to improve the connection strength of the first top wall 21 to the covering part, while the second outer periphery 222 and the second top wall 22 are easy to flip.

[0074] refer to Figure 8 The method S300 for assembling an electrical system includes steps S310 to S330.

[0075] S310, install the wire harness terminal 1220 of the wire harness 1200 onto the terminal block 1120 and lock it with the nut 1130.

[0076] S320, the protective cap 1300 is installed onto the wire harness terminal 1220, wherein the limiting part 3 is sleeved on the wiring structure.

[0077] S330, the covering part 1 can be fixed to the wire harness 1200 using tape. PVC tape can be used.

[0078] The method S300 for assembling electrical systems is easy to operate and highly efficient. The electrical system 1000 provided in this application has good protective performance, is environmentally adaptable, and has a long service life.

[0079] Methods for disassembling the electrical system 1000 may include: prying open the second outer periphery 222 and the second top wall 22; opening the wiring structure; and removing the wiring harness.

[0080] In other embodiments, the method S300 for assembling an electrical system includes: installing a wire harness 1200 with a protective cap 1300 fixed to a terminal block 1120; prying open the second outer periphery 222 and the second top wall 22 to lock the wiring structure; and releasing the second outer periphery 222 and the second top wall 22.

[0081] refer to Figure 9 This application provides a vehicle 2000, which includes the aforementioned electrical system 1000. The vehicle 2000 is safe and has good assembly and maintenance performance.

[0082] The vehicle 2000 may also include electrical equipment 2100, which is electrically connected to the electrical system 1000. Electrical equipment 2100 may include energy storage devices such as capacitors. The vehicle 2000 may also include charging equipment, which may be electrically connected to the electrical system 1000.

[0083] The technical features of the above-disclosed embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.

[0084] In the embodiments disclosed above, unless otherwise explicitly specified and limited, the execution order of each step is not restricted. For example, they can be executed in parallel or sequentially in different orders. The sub-steps of each step can also be executed alternately. Various forms of processes described above can be used, and steps can be reordered, added, or deleted, as long as the desired result of the technical solution provided in this application can be achieved, and this application does not impose any restrictions here.

[0085] The embodiments disclosed above merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of patent protection of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of patent protection claimed by this application. Therefore, the scope of patent protection of this application should be determined by the appended claims.

Claims

1. A protective cap for protecting wire harness terminals and a storage battery, characterized in that, The protective cap includes: A covering portion for at least partially covering the wire harness terminals; A cap body, connected to the covering portion, wherein the cap opening end of the cap body is used to at least partially fasten to the battery; and A limiting part is connected to the cap body and at least partially located inside the cap body, the limiting part being used to fit onto the wiring structure of the battery.

2. The protective cap according to claim 1, characterized in that, The limiting part and the cap body are an integral structure. The limiting part is a rubber limiting part and is interference-fitted to the wiring structure of the battery.

3. The protective cap according to claim 1, characterized in that, The cap body includes a top wall facing away from the cap opening end; A portion of the limiting part protrudes to the side of the top wall opposite to the cap opening.

4. The protective cap according to claim 3, characterized in that, The limiting part has a mating hole and a guide cone hole. The guide cone hole faces the cap opening end. The mating hole communicates with the guide cone hole. The mating hole extends within the limiting part and penetrates to the side of the top wall opposite to the cap opening end.

5. The protective cap according to claim 1, characterized in that, The cap body includes an outer peripheral wall, which includes a first outer peripheral portion connected to the covering portion and a second outer peripheral portion surrounding the limiting portion; the outer peripheral wall is provided with a first notch and a second notch, which at least partially separate the first outer peripheral portion and the second outer peripheral portion, respectively.

6. The protective cap according to claim 5, characterized in that, The second outer peripheral portion is used to fasten to the battery, the first outer peripheral portion is longer than the second outer peripheral portion in the direction of the cap opening, and the covering portion protrudes obliquely from the first outer peripheral portion.

7. The protective cap according to claim 5, characterized in that, The covering portion is adjacent to the first notch; Wherein, the side of the first notch corresponding to the first outer periphery is a plane, and the other side of the first notch is an arc surface for expanding the slot; and / or, the side of the second notch corresponding to the second outer periphery is a plane, and the other side of the second notch is an arc surface for expanding the slot.

8. The protective cap according to claim 5, characterized in that, The cap body includes a first top wall surrounded by a first outer periphery and a second top wall surrounded by a second outer periphery, wherein the first top wall is thicker than the second top wall.

9. The protective cap according to claim 5, characterized in that, The cap body includes a top wall facing away from the cap opening; the covering portion is adjacent to the first notch; the second outer peripheral portion includes a first wall panel along the circumferential direction close to the first notch and a second wall panel away from the first notch; Along the direction away from the top wall, the first wall panel is shorter than the second wall panel.

10. An electrical system, characterized in that, include: Storage battery, including wiring structure; The wire harness terminal is connected to the wiring structure; as well as The protective cap as described in any one of claims 1 to 9.

11. A vehicle, characterized in that, Including the electrical system as described in claim 10.

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