Battery cut-off unit, battery pack and vehicle

Abstract

The utility model provides a battery cut-off unit, a battery pack and a vehicle, relates to the technical field of vehicles, and is used for solving the problems that a sealing cover plate needs to be disassembled when an existing battery cut-off unit is damaged, and the consumed time is long. The embodiment of the utility model provides a battery cut-off unit. The battery cut-off unit comprises a base assembly and an electronic device group, the base assembly is used for being electrically connected with an external circuit. The electronic device set is arranged on the base assembly and detachably connected with the base assembly. Wherein the electronic device group comprises a shell and a plurality of electronic devices, the plurality of electronic devices are arranged in the shell and are electrically connected with the base assembly, and the functions of breaking and short-circuit protection of the conventional battery cut-off unit are realized. The battery cut-off unit is used for open-circuit protection and the like of a vehicle circuit.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a battery cut-off unit, a battery pack and a vehicle. BACKGROUND

[0002] With the development of electric vehicles, the improvement of battery power supply capability, and the uncontrollable factors existing in the process of users using vehicles, the battery cut-off unit inevitably exists damage.

[0003] In the prior art, the battery cut-off unit includes an assembly base and a boss column, the assembly base supports and fixes the entire battery cut-off unit, the boss column supports and fixes internal electrical components of the battery cut-off unit, and a sealing cover plate covers the base and components. The boss column and the assembly base are connected by bolts, and when the battery cut-off unit is maintained, the boss column and the assembly base can be separated.

[0004] However, the internal electrical components of the battery cut-off unit are covered by the sealing cover plate, and when the components are replaced, the sealing cover plate needs to be disassembled first and then maintained, which consumes a long time. Practical new type content

[0005] The purpose of the present application is to provide a battery cut-off unit, a battery pack and a vehicle, which solves the problem that the existing battery cut-off unit needs to be disassembled when damaged, and consumes a long time.

[0006] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0007] In a first aspect, the present application provides a battery cut-off unit, comprising a base assembly and an electronic component group. The base assembly is used to be electrically connected with an external circuit. The electronic component group is arranged on the base assembly and is detachably connected with the base assembly. The electronic component group comprises a shell and a plurality of electronic components. The shell is arranged on the base assembly and is detachably connected with the base assembly. The plurality of electronic components are arranged in the shell and are electrically connected with the base assembly.

[0008] According to the above technical means, the battery cut-off unit provided by the present application comprises a base assembly and an electronic component group. The electronic component group is arranged on the base assembly, and the base assembly provides a mounting position for the electronic component group. The electronic component group comprises a shell and a plurality of electronic components. The plurality of electronic components are arranged in the shell, and the shell provides a mounting position for the plurality of electronic components. When the electronic component group fails to normally use the battery cut-off unit, the electronic component group is directly disassembled from the base assembly to replace a new electronic component group, so that the maintenance of the battery cut-off unit is completed without the need to disassemble other structures, which greatly saves the time for maintaining the battery cut-off unit.

[0009] In a possible implementation, the battery cut-off unit further comprises a connector. The connector is arranged on the base assembly, detachably connected with the base assembly, and electrically connected with the base assembly and the external circuit.

[0010] According to the technical means, the battery cut-off unit is electrically connected with the base assembly and the external circuit through the connector, so that the high-voltage distribution, cut-off, and short-circuit protection of the battery pack are realized.

[0011] In a possible implementation, the connector comprises a connector housing and a connection socket. The connector housing is detachably connected with the base assembly. The connection socket is arranged on the connector housing and electrically connected with the base assembly and the external circuit.

[0012] According to the technical means, the connection socket is responsible for the electrical connection with the base assembly and the external circuit. The connector housing is detachably connected with the base assembly, and the base assembly provides a mounting position for the connector housing. The connector housing can protect the internal circuit of the battery cut-off unit, so as to avoid damage of the battery cut-off unit caused by external reasons such as water vapor.

[0013] In a possible implementation, the base assembly comprises a bottom shell and a base connector. The bottom shell is provided with a positioning column. The base connector is arranged on the bottom shell, electrically connected with the connection socket and the electronic device group, and used for electrical connection with the external circuit. The connector housing is provided with a positioning hole, and the positioning column on the bottom shell is located in the positioning hole and detachably connected with the positioning hole.

[0014] According to the technical means, the base connector is arranged on the bottom shell, and the bottom shell provides a mounting position for the base connector. The base connector is electrically connected with the connection socket, the electronic device group, and the external circuit, so as to realize the basic functions of the battery cut-off unit. The bottom shell is provided with the positioning column, and the connector housing is provided with the positioning hole. The connector can be quickly arranged on the base assembly through the positioning column and the positioning hole. The positioning column and the positioning hole are used for positioning during mounting of the connector, and are also used for connecting and fixing the connector with the base assembly.

[0015] In a possible implementation, the base connector comprises a base connection socket and a connection plug. The base connection socket is arranged on the bottom shell and electrically connected with the connection socket and the electronic device group. The connection plug is detachably connected with the bottom shell and electrically connected with the base connection socket, and used for electrical connection with the external circuit.

[0016] According to the technical means, the base connection socket is responsible for the electrical connection between the internal components of the battery cut-off unit, and the connection plug is responsible for the electrical connection between the battery cut-off unit and the external circuit.

[0017] In a possible implementation, the bottom shell is provided with a clamping groove, and the connection plug is located in the clamping groove and clamped with the clamping groove.

[0018] According to the above technical means, the connecting plug is installed on the bottom shell through the clamping groove, without the need for connection through a copper bar, a bolt or the like, thereby saving the installation process and reducing the installation components.

[0019] In a possible implementation, the connecting power strip includes a power strip body and a first output power strip. The power strip body is formed with a plug-in slot, and the base connecting strip is inserted into the plug-in slot and electrically connected to the power strip body. One end of the first output power strip is inserted into the plug-in slot and electrically connected to the power strip body, and the other end is electrically connected to an external circuit.

[0020] According to the above technical means, the power strip body is formed with a connecting slot, one end of the connecting slot is connected to the base connecting strip, and the other end is connected to the first output power strip. One end of the first output power strip is connected to the power strip body, and the other end is connected to an external circuit. It can be understood that, because the base connecting strip is connected to the electronic device group, the electronic device group can control the external circuit, and through the first output power strip, high-voltage distribution, cutting, short-circuit protection and other work of the battery pack are realized.

[0021] In a possible implementation, the connecting power strip further includes a second output power strip. The second output power strip is arranged on the connector shell, one end of the second output power strip is electrically connected to the base connecting strip, and the other end is electrically connected to an external circuit. It can be understood that, because the base connecting strip is connected to the electronic device group, the electronic device group can control the external circuit, and through the second output power strip, high-voltage distribution, cutting, short-circuit protection and other work of the battery pack are realized.

[0022] In a possible implementation, the connecting power strip further includes a second output power strip. The second output power strip is arranged on the connector shell, one end of the second output power strip is electrically connected to the base connecting strip, and the other end is electrically connected to an external circuit. It can be understood that, because the base connecting strip is connected to the electronic device group, the electronic device group can control the external circuit, and through the second output power strip, high-voltage distribution, cutting, short-circuit protection and other work of the battery pack are realized.

[0023] In a possible implementation, the connecting power strip further includes a second output power strip. The second output power strip is arranged on the connector shell, one end of the second output power strip is electrically connected to the base connecting strip, and the other end is electrically connected to an external circuit. It can be understood that, because the base connecting strip is connected to the electronic device group, the electronic device group can control the external circuit, and through the second output power strip, high-voltage distribution, cutting, short-circuit protection and other work of the battery pack are realized.

[0024] In a possible implementation, the connecting power strip further includes a second output power strip. The second output power strip is arranged on the connector shell, one end of the second output power strip is electrically connected to the base connecting strip, and the other end is electrically connected to an external circuit. It can be understood that, because the base connecting strip is connected to the electronic device group, the electronic device group can control the external circuit, and through the second output power strip, high-voltage distribution, cutting, short-circuit protection and other work of the battery pack are realized.

[0025] In a possible implementation, the connecting power strip further includes a second output power strip. The second output power strip is arranged on the connector shell, one end of the second output power strip is electrically connected to the base connecting strip, and the other end is electrically connected to an external circuit. It can be understood that, because the base connecting strip is connected to the electronic device group, the electronic device group can control the external circuit, and through the second output power strip, high-voltage distribution, cutting, short-circuit protection and other work of the battery pack are realized. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A structural schematic diagram of a battery cutting unit provided by an embodiment of the present application;

[0027] Figure 2 A back view schematic diagram of a battery cutting unit provided by an embodiment of the present application;

[0028] Figure 3A structural schematic diagram of a connector provided by an embodiment of the present application is shown in the figure;

[0029] Figure 4 A structural schematic diagram of a base assembly provided by an embodiment of the present application is shown in the figure;

[0030] Figure 5 A structural schematic diagram of a base assembly provided by an embodiment of the present application is shown in the figure;

[0031] Figure 6 An installation schematic diagram of a battery cut-off unit provided by an embodiment of the present application is shown in the figure;

[0032] Figure 7 An installation schematic diagram of a battery cut-off unit provided by an embodiment of the present application is shown in the figure.

[0033] Reference signs:

[0034] 100 - battery cut-off unit; 1 - electronic device group; 2 - connector; 21 - connector shell; 211 - positioning hole; 22 - connecting plug strip; 221 - plug strip body; 2211 - plug-in slot; 222 - first output plug strip; 223 - second output plug strip; 23 - guide; 24 - mounting piece; 3 - base assembly; 31 - bottom shell; 311 - positioning column; 312 - clamping slot; 32 - bottom shell connector; 321 - bottom shell connecting strip; 322 - connecting plug; 33 - sealing piece; 34 - silicone grease; 35 - base shell. DETAILED DESCRIPTION

[0035] In order to make the ordinary person skilled in the art better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings.

[0036] It should be noted that in the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or relative position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application. Unless otherwise specified, the above orientation description can be flexibly set in the process of actual application under the condition of meeting the relative position relationship shown in the drawings.

[0037] 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "communication" 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 direct connection or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] In embodiments of this invention, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, article, or apparatus that includes that element.

[0040] In this embodiment of the invention, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" or "for example" in this embodiment of the invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0041] This application provides a vehicle. The specific type of vehicle is not specifically limited in this application; for example, the vehicle provided in this application can be an electric vehicle, a hybrid electric vehicle, or a solar-powered vehicle. Furthermore, the vehicle provided in this application can also be of different forms. For example, the vehicle provided in this application can be a sedan, a sport utility vehicle (SUV), or a multi-purpose vehicle (MPV).

[0042] Firstly, such as Figure 1As shown, the battery cut-off unit 100 provided by the embodiments of the present application comprises a base assembly 3 and an electronic device assembly 1. The base assembly 3 is configured to be electrically connected with an external circuit. The electronic device assembly 1 is arranged on the base assembly 3 and detachably connected with the base assembly 3. The electronic device assembly 1 comprises a shell and a plurality of electronic devices. The shell is arranged on the base assembly 3 and detachably connected with the base assembly 3. The plurality of electronic devices are arranged in the shell and electrically connected with the base assembly 3.

[0043] According to the above technical means, the battery cut-off unit 100 provided by the embodiments of the present application is provided. The electronic device assembly 1 is arranged on the base assembly 3, and the base assembly 3 provides a mounting position for the electronic device assembly 1. The electronic device assembly 1 comprises a shell and a plurality of electronic devices, and the plurality of electronic devices are arranged in the shell. The shell provides a mounting position for the plurality of electronic devices. When the electronic device assembly 1 fails to normally use the battery cut-off unit 100, the electronic device assembly 1 is directly detached from the base assembly 3 to replace a new electronic device assembly 1, so that the maintenance of the battery cut-off unit 100 is completed, and other structures do not need to be detached, which greatly saves the time for maintaining the battery cut-off unit 100.

[0044] It can be understood that the plurality of electronic devices comprise electrical components such as a main contactor, a fast charging contactor, a pre-charging resistor, a pre-charging contactor, a fuse, and a current sensor, and can complete high-voltage distribution, cut-off, short-circuit protection and other work of the battery pack.

[0045] In a possible implementation, as shown in Figure 1 The battery cut-off unit 100 further comprises a connector 2. The connector 2 is arranged on the base assembly 3 and detachably connected with the base assembly 3, and is electrically connected with the base assembly 3 and the external circuit.

[0046] According to the above technical means, the battery cut-off unit 100 can be electrically connected with the external circuit through the connector 2 and the base assembly 3, and complete high-voltage distribution, cut-off, short-circuit protection and other work of the battery pack.

[0047] For example, the battery cut-off unit 100 can also not comprise the connector 2. The electronic device assembly 1 is directly arranged on the base assembly 3 and electrically connected with the base assembly 3. The base assembly 3 is electrically connected with the external circuit, and high-voltage distribution, cut-off, short-circuit protection and other work of the battery pack are realized.

[0048] In a possible implementation, as shown in Figure 3 The connector 2 comprises a connector shell 21 and a connection plug strip 22. The connector shell 21 is detachably connected with the base assembly 3. The connection plug strip 22 is arranged on the connector shell 21 and electrically connected with the base assembly 3 and the external circuit.

[0049] According to the above technical means, the connection strip 22 is electrically connected with the base assembly 3 and the external circuit respectively. The connector housing 21 is detachably connected with the base assembly 3, and the base assembly 3 provides a mounting position for the connector housing 21. The connector housing 21 can protect the internal circuit of the battery cut-off unit 100, avoiding damage of the battery cut-off unit 100 caused by external factors such as water vapor.

[0050] For example, the connection strip 22 can be injection molded into the connector housing 21. The injection molding process has high precision and high efficiency, and has wide applicability. At the same time, the injection molding can protect the connection strip 22 from external factors such as water vapor, improve the strength of the battery cut-off unit 100, and prolong the service life.

[0051] In one possible implementation, as shown in Figure 4 The base assembly 3 includes a bottom shell 31 and a base connector 32. The bottom shell 31 is formed with a positioning column 311. The base connector 32 is arranged on the bottom shell 31 and is electrically connected with the connection strip 22 and the electronic device group 1, and is also used for electrical connection with the external circuit. The connector housing 21 is provided with a positioning hole 211, and the positioning column 311 on the bottom shell 31 is located in the positioning hole 211 and is detachably connected with the positioning hole 211. Figure 3 Figure 3

[0052] According to the above technical means, the base connector 32 is arranged on the bottom shell 31, and the bottom shell 31 provides a mounting position for the base connector 32. The base connector 32 is electrically connected with the connection strip 22, the electronic device group 1 and the external circuit, and realizes the basic function of the battery cut-off unit 100. The bottom shell 31 is formed with the positioning column 311, and the connector housing 21 is provided with the positioning hole 211. Through the positioning column 311 and the positioning hole 211, the connector 2 can be quickly arranged on the base assembly 3. The positioning column 311 and the positioning hole 211 are used for positioning during installation of the connector 2, and are also used for connection and fixation of the connector 2 and the base assembly 3.

[0053] For example, as shown in Figure 3 The connector 2 further includes a guide 23 and a mounting member 24. The connector 2 is positioned through the positioning hole 211. After the positioning column passes through the guide 23 and the positioning hole 211, the mounting member 24 can be used to fix the connector 2. Of course, the main function of the guide 23 and the mounting member 24 is to position and fix the connector 2, and they can also be replaced by screws, nuts and other detachable structures.

[0054] For example, as shown in Figure 4 ​​As shown, the base assembly 3 further comprises a seal 33, which is arranged around the bottom shell 31. The battery cut-off unit 100 is an electrical component, and the seal 33 can prevent the battery cut-off unit 100 from being eroded by moisture, thereby improving the stability, prolonging the service life and enhancing the safety of the device. Of course, the seal 33 can be a sealing foam, which has excellent sealing performance and compression resistance, and is flame-retardant, environmentally friendly and has a wide temperature range.

[0055] In a possible implementation, as shown in Figure 4 As shown, the base connector 32 comprises a base connection strip 321 and a connection plug 322. The base connection strip 321 is arranged on the bottom shell 31 and is electrically connected to the connection strip 22 and the electronic device group 1. The connection plug 322 is detachably connected to the bottom shell 31 and is electrically connected to the base connection strip 321, and is used to be electrically connected to an external circuit.

[0056] According to the above technical means, the base connection strip 321 is responsible for the electrical connection between the components inside the battery cut-off unit 100, and the connection plug 322 is responsible for the electrical connection between the battery cut-off unit 100 and the external circuit.

[0057] For example, as shown in Figure 2 As shown, the base assembly 3 further comprises a silicone grease 34, which is arranged between the base connection strip 321 and the bottom shell 31. Figure 4 The electronic device group 1 is the main heat-generating component of the battery cut-off unit 100, and the silicone grease 34 is a high-thermal-conductivity material. By arranging the silicone grease 34, the heat generated by the electronic device group 1 can be transferred to the bottom shell 31 through the connector and the silicone grease, and the heat generated inside the battery cut-off unit 100 can be dissipated through the bottom shell 31, thereby protecting the battery cut-off unit 100 and avoiding damage to the battery cut-off unit 100 due to overheating.

[0058] For example, the plurality of electronic devices of the electronic device group 1 can be inverted in the housing. The plurality of electronic devices are the main heat-generating components in the battery cut-off unit 100, and the inverted installation can make the plurality of electronic devices closer to the silicone grease 34 and the bottom shell 31, thereby enhancing the heat dissipation effect and prolonging the service life of the battery cut-off unit 100.

[0059] For example, as shown in Figure 4 As shown, the base assembly 3 further comprises a base shell 35, which is arranged on the bottom shell 31, and the base connection strip 321 is arranged in the base shell 35, and the seal 33 is arranged around the base shell 35. The base shell 35 can protect the connection circuit inside the battery cut-off unit 100, thereby improving the stability, prolonging the service life and enhancing the safety of the device.

[0060] In a possible implementation, as shown inFigure 5 As shown, the bottom shell 31 is formed with a clamping groove 312, and the connecting plug 322 is located in the clamping groove 312 and clamped with the clamping groove 312.

[0061] According to the above technical means, the connecting plug 322 is installed on the bottom shell 31 through the clamping groove 312, without the need for connection through copper bars, bolts, etc., saving the installation process and reducing the installation components.

[0062] For example, the bottom shell 31 is an integrated cast aluminum structure. The cast aluminum product has high durability and can withstand various weather conditions and daily use tests, is not easy to corrode, deform or wear, and can maintain good appearance and performance for a long time. At the same time, it has high strength and can provide good safety and protection performance. At the same time, the cast aluminum material has good heat dissipation, and the heat transferred by the electronic device group 1 through the silicone grease 34 can be better dissipated.

[0063] In a possible implementation, as shown in the drawings, Figure 7 As shown, the connecting plug 322 is located in the clamping groove 312 and clamped with the clamping groove 312.

[0064] According to the above technical means, the connecting plug 322 is installed on the bottom shell 31 through the clamping groove 312, without the need for connection through copper bars, bolts, etc., saving the installation process and reducing the installation components.

[0065] In a possible implementation, as shown in the drawings, Figure 6 As shown, the connecting plug 322 is located in the clamping groove 312 and clamped with the clamping groove 312.

[0066] The first output socket 222 is responsible for providing most of the power required for the operation of the vehicle, especially for driving the motor to enable the vehicle to travel. The second output socket 223 is responsible for powering the auxiliary systems and devices of the vehicle, such as lighting, instrument panel, central locking, audio system, etc.

[0067] It can be understood that the first output socket 222 and the second output socket 223 are connected at one end in the battery cut-off unit 100 and connected with external circuits at the other end. The battery cut-off unit 100 is electrically connected with the external circuits through the first output socket 222 and the second output socket 223 to complete the high-voltage distribution, cut-off, short-circuit protection, etc. of the battery pack. The first output socket 222 and the second output socket 223 can be replaced by a wire harness or other elements that can achieve the same function.

[0068] In the second aspect, the embodiments of the present application provide a battery pack, including any one of the battery cut-off units 100 in the first aspect.

[0069] In the third aspect, the embodiments of the present application provide a vehicle, including any one of the battery packs in the second aspect.

[0070] Since the vehicle provided by the embodiments of the present application includes the battery pack in the second aspect, the same technical problems as the above-mentioned battery cut-off unit 100 can be solved, and the same technical effects can be achieved, which will not be described here.

[0071] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited to this. Any changes or replacements within the technical scope disclosed in the present application should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A battery cut-off unit characterized by comprising: The battery cut-off unit (100) comprises: a base assembly (3) for electrical connection with an external circuit; and, an electronic device group (1) arranged on the base assembly (3) and detachably connected with the base assembly (3); wherein the electronic device group (1) comprises: a shell arranged on the base assembly (3) and detachably connected with the base assembly (3); and, a plurality of electronic devices arranged in the shell and electrically connected with the base assembly (3).

2. The battery disconnect unit of claim 1, wherein The battery cut-off unit (100) further comprises: a connector (2) arranged on the base assembly (3) and detachably connected with the base assembly (3), and electrically connected with the base assembly (3) and the external circuit.

3. The battery disconnect unit of claim 2, wherein The connector (2) comprises: a connector housing (21) detachably connected with the base assembly (3); and, a connection socket (22) arranged on the connector housing (21) and electrically connected with the base assembly (3) and the external circuit.

4. The battery disconnect unit of claim 3, wherein The base assembly (3) comprises: a bottom shell (31) having a positioning column (311) formed thereon; and, a base connector (32) arranged on the bottom shell (31) and electrically connected with the connection socket (22) and the electronic device group (1), and used for electrical connection with the external circuit; wherein the connector housing (21) is provided with a positioning hole (211), and the positioning column (311) is located in the positioning hole (211) and detachably connected with the positioning hole (211).

5. The battery disconnect unit of claim 4, wherein, The base connector (32) comprises: a base connection row (321) arranged on the bottom shell (31) and electrically connected with the connection socket (22) and the electronic device group (1); and, a connection plug (322) detachably connected with the bottom shell (31) and electrically connected with the base connection row (321), and used for electrical connection with the external circuit.

6. The battery disconnect unit of claim 5, wherein, The bottom shell (31) is formed with a clamping groove (312), and the connection plug (322) is located in the clamping groove (312) and clamped with the clamping groove (312).

7. The battery disconnect unit of claim 5, wherein, The connection socket (22) comprises: a socket main body (221) formed with a plug-in groove (2211), one end of the base connection row (321) is inserted into the plug-in groove (2211) and electrically connected with the socket main body (221); and, a first output socket (222) having one end inserted into the plug-in groove (2211) and electrically connected with the socket main body (221), and the other end electrically connected with the external circuit.

8. The battery disconnect unit of claim 7, wherein, The connection socket (22) further comprises: a second output socket (223) arranged on the connector housing (21) and having one end electrically connected with the base connection row (321) and the other end electrically connected with the external circuit.

9. A battery pack, characterized by, The battery cut-off unit (100) of any one of claims 1-8.

10. A vehicle characterized by comprising: The battery pack of claim 9.

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