Manual maintenance switch for new energy automobile

Abstract

The utility model provides a manual maintenance switch for a new energy automobile, which comprises a base, a top cover and conducting strips, and is characterized in that a first conducting strip and a second conducting strip which are connected with a socket female end assembly in the base are respectively connected with a positive electrode of a battery pack and an electric appliance part; the connection and disconnection of the first conducting strip and the second conducting strip are realized through the plugging and disconnection of the socket female end assembly and the plug male end assembly in the top cover. By arranging the first conducting strip and the second conducting strip, the current transmission area can be increased, so that the rated current of the manual maintenance switch is improved; by arranging the conductive gasket and increasing the thickness of the conductive sheet, the capability of resisting large current impact can be further improved; the conducting strip is made of a material with good conductivity, so that the resistance of the conducting strip can be reduced, and the rated current is improved; and by arranging the top cover handle, the top cover and the base can be locked, and disassembly is convenient. According to the invention, high rated current is realized, the space occupancy rate is low, and the installation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage safety equipment for power batteries of new energy vehicles, and in particular to a manual maintenance switch for new energy vehicles. Background Art

[0002] With the development of the new energy vehicle industry, the popularity of electric vehicles has placed higher and higher requirements on battery packs. Since the voltage used in electric vehicles is generally high voltage of not less than 300V, in order to avoid the risk of electric shock caused by improper operation and damage to electrical components caused by overload and short circuit, manual maintenance switches (MSD) are generally installed on battery boxes and distribution boxes. MSD plays a role in protecting the power supply in the electric vehicle circuit. In an emergency or when performing battery maintenance and installation, the MSD can be disconnected in time to disconnect the current of the battery pack, thereby effectively avoiding electric shock caused by improper operation of maintenance personnel, thereby ensuring the personal safety of maintenance personnel.

[0003] However, the rated current of the existing manual maintenance switch is generally below 260A, and the fuse in the box is 630A. In application scenarios that require large current, such as a battery pack charging rated current of 500A, it is necessary to assemble two separate manual maintenance switches in parallel to achieve basic functional requirements. However, the disadvantage of this method is that during the application process, both manual maintenance switches must be unplugged to disconnect the high voltage. Both the assembly labor cost and the assembly complexity are high, and installing two manual maintenance switches will take up too much installation space, affecting the riding space in the car.

[0004] Therefore, the prior art lacks a manual maintenance switch with high rated current, low space occupancy, and convenient installation. Utility Model Content

[0005] The technical problem to be solved by the utility model is: in view of the shortcomings of the prior art, a manual maintenance switch for new energy vehicles with high rated current is provided, and the space occupancy rate is low and the installation is convenient. The manual maintenance switch for new energy vehicles provided in the present application adopts the following technical solution:

[0006] A manual maintenance switch for a new energy vehicle is installed on the upper cover of a battery pack box of the new energy vehicle. The manual maintenance switch comprises:

[0007] A conductive sheet, comprising a first conductive sheet connected to the positive electrode of the battery pack and a second conductive sheet connected to the electrical component;

[0008] A base, mounted on the upper cover of the battery pack box, wherein a socket female terminal assembly connected to the first conductive sheet and the second conductive sheet through a plurality of connecting terminals is installed in the base; and

[0009] The top cover is detachably mounted on the base, and a plug male end assembly that can be plugged and connected to the socket female end assembly is installed inside the top cover. The plug male end assembly is plugged into the socket female end assembly to conduct the first conductive sheet and the second conductive sheet.

[0010] Furthermore, a conductive gasket is provided between the first conductive sheet, the second conductive sheet and the base.

[0011] Furthermore, the thickness of the first conductive sheet and the second conductive sheet is proportional to the rated current of the manual maintenance switch.

[0012] Furthermore, the first conductive sheet and the second conductive sheet are both made of red copper T2 material.

[0013] Furthermore, connecting ends of the connecting terminal and the first conductive sheet and the second conductive sheet are provided with external threads, and the connecting terminal and the first conductive sheet and the second conductive sheet are fixedly connected by nuts.

[0014] Furthermore, the upper cover of the battery pack case is provided with a first mounting hole, and the bottom of the base is mounted on the inner side of the upper cover of the battery pack case.

[0015] Furthermore, a through hole is provided at the bottom of the base, a corresponding second mounting hole is provided at the upper cover of the battery pack case, and the base is fixed to the upper cover of the battery pack case by fasteners.

[0016] Furthermore, a sealing gasket is provided at the connection between the nut and the conductive sheet.

[0017] Furthermore, the top cover is provided with a top cover handle which can be buckled with the base.

[0018] Furthermore, the base and the top cover are both injection molded by plastic molds.

[0019] In summary, the present application includes at least one of the following beneficial technical effects:

[0020] 1. The present invention connects the first conductive sheet and the second conductive sheet to the female end assembly of the socket through a plurality of connecting terminals, and connects the first conductive sheet and the second conductive sheet to the positive electrode of the battery pack and the electrical component respectively. On the one hand, the conductive sheet has a larger current transmission area and a smaller resistance than the traditional wire, which can increase the high rated current of the manual maintenance switch; on the other hand, by connecting the conductive sheet with a plurality of connecting terminals, the current transmission area can be further increased, thereby increasing the rated current of the manual maintenance switch.

[0021] 2. The present invention provides a conductive gasket between the conductive sheet and the base, which can ensure the sealing of the manual maintenance switch on the one hand, and increase the contact area between the conductive sheet and the base on the other hand, thereby increasing the current transmission area and improving the rated current; the thickness of the conductive sheet is set to be proportional to the rated current of the manual maintenance switch, and the current transmission area between the conductive sheet and the connecting terminal can be further increased by increasing the thickness of the first conductive sheet and the second conductive sheet, and the ability to resist large current impact can be further increased; by selecting copper T2 material for the first conductive sheet and the second conductive sheet, the conductive performance of the conductive sheet can be improved and the rated current can be increased.

[0022] 3. By providing a top cover handle on the top cover, on the one hand, the top cover and the base can be locked, and on the other hand, when maintenance is required, the top cover can be easily disassembled to disconnect the male end assembly of the plug and the female end assembly of the socket.

[0023] 4. Compared with increasing the rated current by connecting multiple separate manual maintenance switches in series or in parallel, the present application only requires one manual maintenance switch to achieve a high rated current, which is not only lower in cost and easier to operate, but also has a low space occupancy rate and will not affect the riding space in the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of a manual maintenance switch for new energy vehicles of the utility model;

[0025] Figure 2 This is a top view of the installation structure of a manual maintenance switch for new energy vehicles of the utility model;

[0026] Figure 3 This is a bottom view of the installation structure of a manual maintenance switch for new energy vehicles of the utility model;

[0027] Figure 4 It is a schematic diagram of the bottom structure of a base of the utility model.

[0028] Reference numerals:

[0029] 1-base, 11-through hole, 2-top cover, 3-connecting terminal, 4-conductive sheet, 41-first conductive sheet, 42-second conductive sheet, 5-conductive gasket, 6-battery pack case cover, 61-first mounting hole, 62-second mounting hole, 7-top cover handle, 8-battery pack positive electrode, 9-battery pack negative electrode. DETAILED DESCRIPTION

[0030] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with an embodiment. The embodiment is only used to explain the present invention and does not constitute a limitation on the protection scope of the present invention.

[0031] The present application is further described in detail below in conjunction with the accompanying drawings.

[0032] like Figures 1 to 4 As shown, the present application provides a manual maintenance switch for a new energy vehicle, which is installed on the upper cover 6 of the battery pack box of the new energy vehicle. The manual maintenance switch includes:

[0033] The conductive sheet 4 includes a first conductive sheet 41 connected to the positive electrode 8 of the battery pack and a second conductive sheet 42 connected to the electrical component;

[0034] A base 1 is mounted on the upper cover 6 of the battery pack box, and a socket female terminal assembly connected to the first conductive sheet 41 and the second conductive sheet 42 through a plurality of connecting terminals 3 is installed in the base 1; and

[0035] The top cover 2 is detachably mounted on the base 1, and a male plug assembly that can be plugged into the female socket assembly is installed inside the top cover 2. The male plug assembly is plugged into the female socket assembly to connect the first conductive sheet 41 and the second conductive sheet 42.

[0036] like Figure 3 and Figure 4 As shown, a plurality of connection terminals 3 made of conductive material are fixed on both sides of the bottom of the base 1, one end of the connection terminal 3 is connected to the socket female terminal assembly, and the other end passes through the bottom of the base 1 and is connected to the first conductive sheet 41 and the second conductive sheet 42 respectively.

[0037] The present application connects the first conductive sheet 41 and the second conductive sheet 42 connected to the socket female end assembly to the positive electrode 8 of the battery pack and the electrical component respectively. When the top cover 2 is installed on the base 1, the male end assembly of the plug is plugged into the female end assembly of the socket, and the current flows from the positive electrode 8 of the battery pack through the first conductive sheet 41 to the manual maintenance switch, and then flows into the electrical component through the second conductive sheet 42, and finally flows to the negative electrode 9 of the battery pack through the electrical component to achieve circuit conduction; when the top cover 2 is removed from the base 1, the male end assembly of the plug is disconnected from the female end assembly of the socket to disconnect the circuit of the first conductive sheet 41 and the second conductive sheet 42 to ensure the safety of the operator. By setting the first conductive sheet 41 and the second conductive sheet 42 for circuit connection, the conductive sheet 4 has a larger current transmission area and a smaller resistance than the traditional wire, which can increase the high rated current of the manual maintenance switch, and by connecting the conductive sheet 4 with a plurality of connection terminals 3, the current transmission area can be further increased, and the rated current of the manual maintenance switch can be increased. Compared with increasing the rated current by connecting multiple separate manual maintenance switches in series or in parallel, the present application only requires one manual maintenance switch to achieve a high rated current, which is not only lower in cost and easier to operate, but also has a low space occupancy rate and will not affect the riding space in the vehicle.

[0038] In some embodiments, Figure 4 As shown, a conductive gasket 5 is provided between the first conductive sheet 41, the second conductive sheet 42 and the base 1. The conductive gasket 5 can ensure the sealing of the connection installation on the one hand, and can increase the contact area between the conductive sheet 4 and the base 1 on the other hand. The larger the contact area, the more current passes through per unit time, and the smaller the resistance is, which can further increase the rated current of the manual maintenance switch.

[0039] In some embodiments, the thickness of the first conductive sheet 41 and the second conductive sheet 42 is proportional to the rated current of the manual maintenance switch. When the rated current of the manual maintenance switch needs to be increased, the contact area between the conductive sheet 4 and the connection terminal 3 can be increased by increasing the thickness of the first conductive sheet 41 and the second conductive sheet 42, thereby further increasing the ability of the manual maintenance switch to resist large current shocks.

[0040] In some embodiments, the first conductive sheet 41 and the second conductive sheet 42 are both made of copper T2 material. Since copper T2 material has good conductivity, by using copper T2 material to make the first conductive sheet 41 and the second conductive sheet 42, the resistance of the conductive sheet 4 can be reduced and the rated current can be increased.

[0041] As a preference, the first conductive sheet 41 and the second conductive sheet 42 may also be made of other materials with good conductive properties, such as silver, gold and the like.

[0042] In some embodiments, Figure 2 and Figure 3 As shown, the battery pack case upper cover 6 is provided with a first mounting hole 61, the base 1 passes through the first mounting hole 61 and the bottom of the base 1 is mounted on the inner side of the battery pack case upper cover 6, and the first conductive sheet 41 and the second conductive sheet 42 are fixed to the bottom of the base 1 through the connection terminal 3 on the inner side of the battery pack case upper cover 6. The four corners of the bottom of the base 1 are provided with through holes 11, and the battery pack case upper cover 6 is provided with four second mounting holes 62 corresponding to the through holes 11. The bottom of the base 1 is fixed to the inner side of the battery pack case upper cover 6 by fasteners passing through the through holes 11 and the second mounting holes 62, so as to realize the stable connection between the manual maintenance switch of the present application and the battery pack case upper cover 6.

[0043] In some embodiments, Figure 1 and Figure 3As shown, the connecting terminal 3 passes through the bottom of the base 1 and is provided with an external thread at the connecting end with the first conductive sheet 41 and the second conductive sheet 42. The first conductive sheet 41 and the second conductive sheet 42 are both provided with holes that match the connecting terminal 3. The connecting terminal 3 is fixedly connected to the conductive sheet 4 by a nut. By fixing the conductive sheet 4 by the nut, it can be ensured that the first conductive sheet 41 and the second conductive sheet 42 are closely fitted with the conductive gasket 5 on the base 1. After the first conductive sheet 41 and the second conductive sheet 42 are locked with the conductive gasket 5, the internal resistance of the connection is very small, which can carry a large current and reduce heat generation.

[0044] As a preferred embodiment, a sealing gasket is provided at the connection between the nut and the conductive sheet 4 to further improve the tightness of the connection.

[0045] As a preferred embodiment, Figure 1 and Figure 2 As shown, top cover handles 7 are provided on two opposite sides of the top cover 2, and a card slot is provided on the outer side of the upper end of the base 1. One end of the top cover handle 7 is connected to the top cover 2 through a rotating pair, and the other end is buckled with the card slot. By providing the top cover handles 7 on two opposite sides of the top cover 2, on the one hand, the top cover 2 and the base 1 can be locked, and on the other hand, when maintenance is required, the top cover 2 can be easily disassembled to disconnect the male end assembly of the plug and the female end assembly of the socket.

[0046] As a preferred embodiment, the base 1 and the top cover 2 are injection molded by a plastic mold. After the plastic mold is opened, the production efficiency of the base 1 and the top cover 2 is high and the cost is relatively low.

[0047] The above implementation modes are only used to illustrate the present invention, but not to limit the present invention. Although the present invention is described in detail with reference to the embodiments, a person skilled in the art should understand that various combinations, modifications or equivalent substitutions of the technical solutions of the present invention do not deviate from the spirit and scope of the technical solutions of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. A manual maintenance switch for new energy vehicles, installed on the upper cover of the battery pack box of the new energy vehicle, characterized in that: The manual maintenance switch comprises: A conductive sheet, comprising a first conductive sheet connected to the positive electrode of the battery pack and a second conductive sheet connected to the electrical component; A base, mounted on the upper cover of the battery pack box, wherein a socket female terminal assembly connected to the first conductive sheet and the second conductive sheet through a plurality of connecting terminals is installed in the base; and The top cover is detachably mounted on the base, and a plug male end assembly that can be plugged and connected to the socket female end assembly is installed inside the top cover. The plug male end assembly is plugged into the socket female end assembly to conduct the first conductive sheet and the second conductive sheet.

2. A manual maintenance switch for new energy vehicles according to claim 1, characterized in that: A conductive gasket is disposed between the first conductive sheet, the second conductive sheet and the base.

3. A manual maintenance switch for new energy vehicles according to claim 2, characterized in that: The thickness of the first conductive sheet and the second conductive sheet is proportional to the rated current of the manual maintenance switch.

4. A manual maintenance switch for new energy vehicles according to claim 3, characterized in that: The first conductive sheet and the second conductive sheet are both made of copper T2 material.

5. A manual maintenance switch for new energy vehicles according to claim 1, characterized in that: The connecting ends of the connecting terminal and the first conductive sheet and the second conductive sheet are provided with external threads, and the connecting terminal and the first conductive sheet and the second conductive sheet are fixedly connected by nuts.

6. A manual maintenance switch for new energy vehicles according to claim 5, characterized in that: The battery pack case upper cover is provided with a first mounting hole, and the bottom of the base is mounted on the inner side of the battery pack case upper cover.

7. A manual maintenance switch for new energy vehicles according to claim 6, characterized in that: A through hole is provided at the bottom of the base, and a corresponding second mounting hole is provided on the upper cover of the battery pack case. The base is fixed to the upper cover of the battery pack case by fasteners.

8. A manual maintenance switch for new energy vehicles according to claim 5, characterized in that: A sealing gasket is provided at the connection between the nut and the conductive sheet.

9. A manual maintenance switch for new energy vehicles according to claim 1, characterized in that: The top cover is provided with a top cover handle which can be buckled with the base.

10. A manual maintenance switch for new energy vehicles according to claim 9, characterized in that: The base and the top cover are both injection molded by plastic molds.

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