Protective cover, maintenance switch and battery pack

Abstract

The utility model relates to the field of electrical connection, in particular to a protective cover, a maintenance switch and a battery pack, the protective cover comprises a sleeve, a limiting piece, a cover body and a side frame, the side frame is connected with the cover body, the side frame is arranged in the circumferential direction of the cover body, the side frame extends in the direction away from the cover body to define a cavity, the limiting piece is connected with the cover body, and the limiting piece is connected with the cover body. The limiting piece is arranged in the cavity and extends in the direction away from the cover body, at least part of the sleeve is arranged in the cavity, the sleeve is connected with the cover body, and the cover body is provided with a through hole communicated with the interior of the sleeve. The protective cover provided by the utility model can carry out insulation protection on the maintenance switch, and improves the use safety and stability of the maintenance switch.

Description

Technical Field

[0001] The utility model relates to the field of electrical connection, in particular to a protective cover, a maintenance switch and a battery pack. Background Art

[0002] The energy storage high-voltage maintenance switch is a heavy component in the energy storage battery pack. Its function is to manually disconnect the high-voltage connection during the installation, maintenance and debugging of the energy storage battery pack, so as to ensure the safety of personnel. Structurally, the maintenance switch is divided into two parts: a socket and a plug. The socket adopts a panel-mounted structure. Inside the socket of the maintenance switch, there is a mounting surface for connecting the high-voltage busbar, which is used to connect the internal high voltage and set a switch here. The plug can be manually installed or removed externally to connect or disconnect the high voltage, so as to repair or replace the energy storage device.

[0003] However, inside the socket of the maintenance switch, the busbar is fixed to the mounting surface by bolts and is exposed. Since the metal such as copper sheets on the busbar is charged, if it comes into contact with the outside or the maintenance personnel, safety accidents such as short circuits and arcing will occur. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems in the related art to a certain extent. For this purpose, an embodiment of the utility model provides a protective cover, which can improve the insulation performance of the maintenance switch and enhance the safety and stability of the use of the maintenance switch.

[0005] The protective cover of the embodiment of the utility model includes:

[0006] A cover body;

[0007] A side frame, which is connected to the cover body, is arranged around the circumferential direction of the cover body, and extends away from the cover body to form a cavity;

[0008] A limiting member, which is connected to the cover body, is arranged in the cavity, and extends away from the cover body;

[0009] A sleeve, at least part of which is arranged in the cavity, is connected to the cover body, and the cover body is provided with a through hole communicating with the inside of the sleeve.

[0010] The protective cover of the embodiment of the utility model can provide insulation protection for the maintenance switch and improve the safety and stability of the use of the maintenance switch.

[0011] In some embodiments, the number of the sleeves and the limiting members is multiple.

[0012] A plurality of the sleeves are arranged at intervals in the extending direction of the cover body, and a plurality of the limiting members are arranged at intervals in the width direction of the cover body, and / or, a plurality of the sleeves are arranged at intervals in the width direction of the cover body, and a plurality of the limiting members are arranged at intervals in the extending direction of the cover body.

[0013] In some embodiments, the size of the limiting member in the direction away from the cover body is A, and 3 mm ≤ A ≤ 20 mm.

[0014] In some embodiments, the cross-section of the limiting member in the extending direction of the cover body gradually decreases in the direction away from the cover body, and the end face of the side of the limiting member facing away from the cover body is a plane.

[0015] In some embodiments, a busbar inlet and a busbar outlet are provided on the side frame, and the busbar inlet and the busbar outlet are arranged at intervals in the width direction or the extending direction of the cover body.

[0016] In some embodiments, a convex portion is provided at one end of the cover body facing away from the limiting member, the convex portion extends in the direction away from the limiting member, and an installation groove is provided at one end of the convex portion facing the cavity for installing the sleeve.

[0017] In some embodiments, a wire harness opening communicating with the installation groove is provided on the convex portion.

[0018] In some embodiments, the cover body and the limiting member are integrally formed.

[0019] The maintenance switch according to an embodiment of the present invention includes:

[0020] A maintenance switch body;

[0021] A protective cover, the protective cover is the protective cover described in any one of the above, and the protective cover is detachably connected to the maintenance switch body;

[0022] A plurality of insulating members, the insulating members are provided at one end of the maintenance switch facing the protective cover, and the positions of the plurality of insulating members on the maintenance switch correspond to the positions of the limiting members on the cover body.

[0023] The maintenance switch according to an embodiment of the present invention, by using the above protective cover, can perform insulation protection on the maintenance switch, and improve the safety and stability of the use of the maintenance switch.

[0024] The battery pack according to an embodiment of the present invention includes the maintenance switch described above.

[0025] The battery pack according to an embodiment of the present invention, by using the above protective cover, can perform insulation protection on the maintenance switch, and improve the safety and stability of the use of the maintenance switch. Brief Description of the Drawings

[0026] Figure 1 It is a schematic diagram of the protective cover according to an embodiment of the present utility model.

[0027] Figure 2 It is a schematic diagram of the insulating part according to an embodiment of the present utility model.

[0028] Figure 3 It is a schematic diagram of the limiting part and the sleeve according to an embodiment of the present utility model.

[0029] Reference Numerals:

[0030] Protective cover 10, maintenance switch 20,

[0031] Cover body 1, convex part 11, installation groove 111, wire harness opening 112,

[0032] Side frame 2, busbar inlet 21, busbar outlet 22,

[0033] Limiting part 3, sleeve 4, maintenance switch body 5, insulating part 6, busbar 7. Detailed Description of the Embodiment

[0034] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0035] The protective cover 10 of the embodiment of the present utility model includes a cover body 1, a side frame 2, a limiting part 3 and a sleeve 4. The side frame 2 is connected to the cover body 1. The side frame 2 is arranged around the circumference of the cover body 1, and the side frame 2 extends in a direction away from the cover body 1 to form a cavity. The limiting part 3 is connected to the cover body 1. The limiting part 3 is arranged in the cavity, and the limiting part 3 extends in a direction away from the cover body 1. At least a part of the sleeve 4 is arranged in the cavity, and the sleeve 4 is connected to the cover body 1. The cover body 1 is provided with a through hole communicating with the inside of the sleeve 4.

[0036] Specifically, as Figures 1 to 3 shown, the side frame 2 extends in the up and down direction. The upper end of the side frame 2 is connected to the lower end of the cover body 1. Further, the side frame 2 and the cover body 1 form a cavity.

[0037] The upper end of the limiting part 3 is connected to the lower end surface of the cover body 1. The limiting part 3 extends downward. The limiting part 3 is located in the cavity. When the protective cover 10 is installed on the maintenance switch 20, the limiting part 3 contacts the maintenance switch 20 to control the distance between the maintenance switch 20 and the lower end surface of the cover body 1, improving the insulation gap and creepage distance of the product and enhancing the insulation strength of the battery pack.

[0038] The sleeve 4 is at least partially disposed within the cavity, and the upper end of the sleeve 4 is connected to the lower end of the cover body 1. The lower end of the sleeve 4 is in contact with the maintenance switch 20. The cover body 1 is provided with a through hole communicating with the inside of the sleeve 4, thereby facilitating the connection of the bolt through the sleeve 4 to the maintenance switch 20 and facilitating the installation of the protective cover 10 on the maintenance switch 20.

[0039] Furthermore, the cover body 1, the side frame 2, the limiting member 3, and the sleeve 4 are all resin materials with good insulation performance and high mechanical strength, such as epoxy resin, polyurethane resin, and polymethyl methacrylate.

[0040] For the protective cover 10 of the embodiment of the present utility model, by providing the limiting member 3 disposed between the cover body 1 and the maintenance switch 20 to prevent the cover body 1 from directly contacting the maintenance switch 20, the cover body 1, the side frame 2, and the limiting member 3 can provide insulation protection for the maintenance switch, improving the safety and stability of the use of the maintenance switch.

[0041] It can improve the insulation performance of the maintenance switch 20, that is, improve the insulation gap and creepage distance of the product, enhancing the insulation strength of the battery pack. By providing the sleeve 4 and the sleeve 4 communicating with the through hole of the cover plate, the protective cover 10 can be fixedly installed on the maintenance switch 20, improving the safety and stability of the use of the maintenance switch 20. The limiting member 3 also prevents damage such as cracking of the cover body 1 of the protective cover 10 caused by excessive force during installation. A sleeve 4 is provided inside the protective cover 10 to completely cover the nut for installing the bus bar 7, preventing the nut from falling off and also providing an insulation protection effect.

[0042] In some embodiments, the number of the sleeves 4 and the limiting members 3 is multiple.

[0043] The multiple sleeves 4 are arranged at intervals in the extending direction of the cover body 1, and the multiple limiting members 3 are arranged at intervals in the width direction of the cover body 1, and / or, the multiple sleeves 4 are arranged at intervals in the width direction of the cover body 1, and the multiple limiting members 3 are arranged at intervals in the extending direction of the cover body 1.

[0044] The multiple sleeves 4 are arranged relatively at intervals in the front-back direction. For example, two sleeves 4 are arranged relatively at intervals in the front-back direction, and the multiple limiting members 3 are arranged at intervals in the left-right direction. Thus, while facilitating the installation of the protective cover 10, since the lower end of the limiting member 3 contacts the bus bar 7 of the maintenance switch 20, the interference between the installation of the sleeve 4 and the bus bar 7 is avoided. Or, the multiple sleeves 4 are arranged at intervals in the left-right direction, and the multiple limiting members 3 are arranged at intervals in the front-back direction.

[0045] In some embodiments, the dimension of the limiting member 3 in the direction away from the cover body 1 is A, and 3mm ≤ A ≤ 20mm.

[0046] The dimension of the limiting member 3 in the up-down direction is A, and 3 mm ≤ A ≤ 20 mm. For example, A can be 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm. Furthermore, by setting the dimension of the limiting member 3, the distance between the bus bar 7 of the maintenance switch 20 and the cover body 1 in the up-down direction is determined, and the insulation clearance and creepage distance of the product are used to enhance the insulation strength of the battery pack. By setting the size of A, different types of protective covers 10 can be selected according to different requirements.

[0047] In some embodiments, the cross-section of the limiting member 3 in the extending direction of the cover body 1 gradually decreases along the direction away from the cover body 1, and the end face of the limiting member 3 on the side facing away from the cover body 1 is a plane.

[0048] The area of the cross-section of the limiting member 3 in the extending direction of the cover body 1 gradually decreases from top to bottom. The lower end face of the limiting member 3 is a plane, and the lower end face of the limiting member 3 is in contact with the maintenance switch 20. By setting the contact surface between the limiting member 3 and the maintenance switch 20 to be a plane, the contact area between the limiting member 3 and the maintenance switch 20 can be increased, and the limiting effect during the installation of the protective cover 10 can be improved. At the same time, by gradually decreasing the area of the cross-section of the limiting member 3 in the extending direction of the cover body 1 from top to bottom, while reducing costs, a corresponding limiting groove is provided on the maintenance switch 20 so that the lower end of the limiting member 3 extends into the limiting groove. The gradually decreasing cross-section helps to guide the cover body 1 to move along a predetermined trajectory after extending into the limiting groove when the cover body 1 is opened or closed, reducing deviation or shaking and facilitating the installation of the protective cover 10.

[0049] In some embodiments, a bus bar inlet 21 and a bus bar outlet 22 are provided on the side frame 2, and the bus bar inlet 21 and the bus bar outlet 22 are arranged at intervals in the width direction or the extending direction of the cover body 1.

[0050] A bus bar inlet 21 and a bus bar outlet 22 are provided on the side frame 2 to connect the circuit to the bus bar 7 on the maintenance switch 20. At the same time, the bus bar inlet 21 and the bus bar outlet 22 are arranged at intervals in the width direction or the extending direction of the cover body 1. In this way, the circuits of the bus bar inlet 21 and the bus bar outlet 22 are separated to avoid leakage due to aging of the later lines caused by the too-close circuit spacing. By arranging them at intervals, it can be ensured that the respective functional areas of the inlet and the outlet do not interfere with each other, improving the safety and stability of the protective cover 10 during use.

[0051] In some embodiments, a protrusion 11 is provided at one end of the cover body 1 facing away from the limiting member 3. The protrusion 11 extends along the direction away from the limiting member 3, and an installation groove 111 is provided at one end of the protrusion 11 facing the cavity to install the sleeve 4.

[0052] Specifically, Figures 1 to 3 As shown, the raised portion 11 is raised upward, and a mounting groove 111 is provided at the lower end of the raised portion 11 to facilitate installation of the sleeve 4. By providing the raised portion 11, the raised portion 11 is raised upward to facilitate personnel to exert force and grasp the protective cover 10 when installing the protective cover 10. At the same time, the raised portion 11 is provided with the mounting groove 111 to install the sleeve 4, thereby reducing the weight and cost of the protective cover 10.

[0053] Furthermore, the protrusion 11 is provided with a harness opening 112 which is in communication with the mounting groove 111, so that the harness is connected to the maintenance switch 20 at the bottom of the protective cover 10 through the harness opening 112. The harness opening 112 is used to leave space for the low-voltage signal harness to connect to the outside.

[0054] Furthermore, the cover body 1 and the limiting member 3 are integrally formed, which reduces the manufacturing cost of the protective cover 10 , improves the structural strength of the protective cover 10 , and further improves the stability and safety of the protective cover 10 .

[0055] The maintenance switch 20 of the embodiment of the utility model comprises: a maintenance switch body 5, a protective cover 10 and a plurality of insulating members 6.

[0056] The maintenance switch body 5 is provided with a bus 7, the protective cover 10 is any one of the protective covers 10 mentioned above, the anti-slip cover is detachably connected to the maintenance switch body 5, the insulating member 6 is provided at one end of the maintenance switch 20 facing the protective cover 10, and the positions of the multiple insulating members 6 on the maintenance switch 20 correspond to the positions of the limit members 3 on the cover body 1.

[0057] Specifically, Figures 1 to 3 As shown, the protective cover 10 is detachably connected to the maintenance switch body 5, or the side frame 2 is used to cooperate with the outer frame of the maintenance switch 20 socket, which can be an interference fit or a snap connection to ensure that the protective cover 10 is firmly fixed to the maintenance switch body 5 and does not fall off.

[0058] The insulating member 6 is disposed on the upper end surface of the maintenance switch 20, and the insulating member 6 cooperates with the limiting member 3. For example, one end of the insulating member 6 facing the protective cover 10 has a limiting groove so that the lower end of the limiting member 3 can extend into the limiting groove.

[0059] The maintenance switch 20 of the embodiment of the present utility model, by providing a limiting member 3, which is arranged between the cover body 1 and the maintenance switch 20, can prevent the cover body 1 from directly contacting the bus bar 7 on the maintenance switch body 5, improve the insulation performance of the maintenance switch 20, increase the insulation clearance and creepage distance of the product, and enhance the insulation strength of the battery pack. By providing a sleeve 4, and the sleeve 4 is communicated with the through hole of the cover plate, so as to fixedly install the protective cover 10 on the maintenance switch 20, improving the safety and stability of the use of the maintenance switch 20. The limiting member 3 also prevents damage such as cracking of the cover body 1 of the protective cover 10 caused by excessive force during installation. A sleeve 4 is arranged inside the protective cover 10, which is used to completely cover the nut for installing the bus bar 7, prevent the nut from falling off, and also play an insulating and protective effect.

[0060] The battery pack of the embodiment of the present utility model includes the above-mentioned maintenance switch 20.

[0061] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model.

[0062] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0063] In the present utility model, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0064] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the horizontal height of the first feature is less than that of the second feature.

[0065] In the present utility model, the terms "an embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0066] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A protective cover, characterized in that: include: Cover body; A side frame, wherein the side frame is connected to the cover body, the side frame is arranged around the circumference of the cover body, and the side frame extends in a direction away from the cover body to enclose a cavity; A limiting member, the limiting member is connected to the cover body, the limiting member is arranged in the cavity, and the limiting member extends in a direction away from the cover body; The sleeve is at least partially disposed in the cavity, and the sleeve is connected to the cover body. The cover body is provided with a through hole communicating with the interior of the sleeve.

2. The protective cover according to claim 1, characterized in that: There are multiple sleeves and multiple stoppers. The plurality of sleeves are arranged at intervals in the extension direction of the cover body, the plurality of limit members are arranged at intervals in the width direction of the cover body, and / or the plurality of sleeves are arranged at intervals in the width direction of the cover body, the plurality of limit members are arranged at intervals in the extension direction of the cover body.

3. The protective cover according to claim 2, characterized in that: The dimension of the limiting member in the direction away from the cover body is A, and 3mm≤A≤20mm.

4. The protective cover according to claim 2, characterized in that: The cross section of the limiting member in the extension direction of the cover body gradually decreases in the direction away from the cover body, and the end surface of the limiting member on the side away from the cover body is a plane.

5. The protective cover according to claim 1, characterized in that: The side frame is provided with a busbar inlet and a busbar outlet, and the busbar inlet and the busbar outlet are arranged at intervals in the width direction or the extension direction of the cover body.

6. The protective cover according to claim 1, characterized in that: A protrusion is provided on one end of the cover body away from the limiting member, the protrusion extends in a direction away from the limiting member, and an end of the protrusion facing the cavity has a mounting groove for mounting the sleeve.

7. The protective cover according to claim 6, characterized in that: The protruding portion is provided with a harness opening which is communicated with the mounting groove.

8. The protective cover according to claim 1, characterized in that: The cover body and the limiting member are integrally formed.

9. A maintenance switch, characterized in that: include: Repair the switch body; A protective cover, wherein the protective cover is the protective cover according to any one of claims 1 to 8, and the protective cover is detachably connected to the maintenance switch body; A plurality of insulating members are provided at one end of the maintenance switch facing the protective cover, and positions of the plurality of insulating members on the maintenance switch correspond to positions of the limiting members on the cover body.

10. A battery pack, characterized in that: Including the maintenance switch described in claim 9.

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