Power supply module and electric equipment

Abstract

The embodiment of the utility model relates to the technical field of electric shock devices, and particularly discloses a power supply module and electric equipment, and the power supply module comprises a power supply assembly, a contact assembly, a first elastic part and a terminal assembly. The power assembly is provided with a positive electrode and a negative electrode. The contact assembly is concavely provided with a plugging groove, and the contact assembly is electrically connected with the positive electrode. The first elastic member is installed in the plugging groove and is electrically connected with the contact assembly. The terminal assembly comprises a terminal, the terminal is movably inserted into the first elastic piece, and the terminal is electrically connected with the other one of the negative electrodes. The terminal assembly can be switched between a power-on state and a power-off state; in a power-on state, the terminal is inserted into the first elastic piece, and the positive electrode, the contact assembly, the first elastic piece, the terminal and the negative electrode form a closed circuit; in the power-off state, the terminal is disconnected from the first elastic piece. Through the above structure, when emergency circuit break is needed, the terminal and the first elastic member are disconnected, and the circuit break can be formed. And the elasticity of the first elastic piece is utilized to realize the functions of multi-time plugging and power-off of the terminal.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of electric shock devices, and in particular to a power supply module and electrical equipment. Background Art

[0002] Electricity is one of the main energy sources at present. Electric equipment includes power supply and working module. The power supply is used to supply power to the working module. During the operation of the working module, a power-off structure is often required to protect the working circuit in case of emergencies.

[0003] The inventor of the present application discovered during the process of implementing the present application that, in some electrical equipment, it is necessary to reconnect the power supply and the working module after the power module is used, and the commonly used fuse-type power-off structure cannot meet the use requirements. There is an urgent need for a circuit-breaking mechanism that can meet the multiple power-off functions. Utility Model Content

[0004] The embodiments of the present application provide a power supply module and an electrical device, which can improve the current situation where the circuit breaker mechanism cannot meet the multiple power-off function.

[0005] In order to solve the above technical problems, a technical solution adopted by the present application is: to provide a power module, the power module includes a power assembly, a contact assembly, a first elastic member and a terminal assembly. The power assembly is provided with a positive electrode and a negative electrode. The contact assembly is concavely provided with a plug-in slot, and the contact assembly is electrically connected to the positive electrode. The first elastic member is installed in the plug-in slot, and the first elastic member is electrically connected to the contact assembly. The terminal assembly includes a terminal, the terminal can be movably plugged into the first elastic member, and the terminal is electrically connected to the other of the negative electrodes. The terminal assembly can switch between a power-on state and a power-off state; in the power-on state, the terminal is plugged into the first elastic member, and the positive electrode, the contact assembly, the first elastic member, the terminal and the negative electrode form a path; in the power-off state, the terminal is disconnected from the first elastic member to form a short circuit.

[0006] Optionally, the first elastic member is hollow and has an elastic cavity. The terminal is provided with a plug-in end, in the power-on state, the plug-in end is plugged into the elastic cavity, and the cavity of the elastic cavity is enlarged, and in the power-off state, the plug-in end leaves the elastic cavity, and the elastic cavity is reset.

[0007] Optionally, the terminal is further provided with a first limiting portion, which is arranged on the other side of the plug-in end for inserting into the elastic cavity, and the diameter of the first limiting portion is greater than the diameter of the notch of the plug-in slot.

[0008] Optionally, the terminal assembly further comprises a base, the base is provided with a mounting portion, the terminal is provided with a mounting column, and the mounting column is mounted on the mounting portion.

[0009] Optionally, the contact assembly includes a column and a contact terminal, the contact terminal is electrically connected to the positive electrode, the column is threadedly connected to the contact terminal, and the insertion slot is provided on the column.

[0010] Optionally, the power module further comprises a mounting base, the mounting base comprises a main body and a bottom plate, the main body and the bottom plate together enclose a first receiving cavity, the column is at least partially inserted into the first receiving cavity, and the notch of the plug-in slot is exposed in the first receiving cavity. In the power-on state, the terminal passes through the first receiving cavity and is plugged into the first elastic member in the plug-in slot. In the power-off state, the terminal leaves the plug-in slot, and / or the terminal leaves the first receiving cavity.

[0011] Optionally, the bottom plate is provided with a through hole, the through hole is communicated with the first receiving cavity, the through hole is arranged corresponding to the plug-in slot, and the through hole is used for the terminal to extend into the first receiving cavity.

[0012] Optionally, the column is provided with a clamping portion, the clamping portion is arranged around one end of the column inserted into the first receiving cavity, and the clamping portion and the contact terminal are clamped together by the main body.

[0013] Optionally, the power supply assembly includes a power supply, a circuit board and an elastic clamping part, the positive electrode and the negative electrode are arranged on the power supply, the circuit board is installed on the side of the power supply where the positive electrode is arranged, the elastic clamping part is installed on the bottom plate, and the elastic clamping part is arranged on the side of the power supply where the negative electrode is arranged. In the power-on state, the elastic clamping part is used to clamp the terminal.

[0014] In order to solve the above technical problems, another technical solution adopted by the present application is: an electrical device is also provided, the electrical device includes an electric shock device, and the power module is used to supply power to the electric shock device.

[0015] The beneficial effect of the embodiment of the present application is that: different from the prior art, the embodiment of the present application provides a power module, the power module includes a power assembly, a contact assembly, a first elastic member and a terminal assembly. The power assembly is provided with a positive electrode and a negative electrode. The contact assembly is concavely provided with a plug-in slot, and the contact assembly is electrically connected to the positive electrode. The first elastic member is installed in the plug-in slot, and the first elastic member is electrically connected to the contact assembly. The terminal assembly includes a terminal, the terminal can be movably plugged into the first elastic member, and the terminal is electrically connected to the other of the negative electrodes. The terminal assembly can be switched between a power-on state and a power-off state; in the power-on state, the terminal is plugged into the first elastic member, and the positive electrode, the contact assembly, the first elastic member, the terminal and the negative electrode form a passage; in the power-off state, the terminal is disconnected from the first elastic member to form a circuit break. Through the above structure, when the power module is working, the terminal assembly is in the power-on state. When an emergency circuit break is required, the terminal is pulled out to disconnect the terminal from the first elastic member to form a circuit break. The elasticity of the first elastic member is utilized to realize multiple plugging and unplugging of the terminal, thereby realizing the function of multiple power-offs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without paying creative work.

[0017] Figure 1 is a schematic diagram of an electrical device provided in one embodiment of the present application;

[0018] Figure 2 is a three-dimensional diagram of a power module provided in one embodiment of the present application;

[0019] Figure 3 is an exploded view of a power module provided in one embodiment of the present application;

[0020] Figure 4 One embodiment of the present application provides Figure 2 A-side cross-sectional view;

[0021] Figure 5 One embodiment of the present application provides Figure 4 A magnified view of part B;

[0022] Figure 6 This is an exploded view of a terminal assembly provided in one embodiment of the present application.

[0023] The reference numerals of the electrical equipment 1 are as follows:

[0024] Power Module 1000 The first limiter 412 Power Components 100 The second limiter 413 positive electrode 110 Mounting Column 414 negative electrode 120 Base 420 power supply 130 Installation Department 421 Circuit Board 140 The third limiter 422 Elastic clamping part 150 Foolproof slot 423 The second elastic member 160 Fixed plug 430 Contact components 200 Sebe 431 Socket 210 Foolproofing Department 432 Column 220 Mounting Block 500 Joint 221 main body 510 Contact terminal 230 Base Plate 520 The first elastic member 300 Through Hole 521 Elastic cavity 310 Grooves 522 Terminal Assemblies 400 The first receiving cavity 530 terminal 410 Second receiving chamber 540 Plug end 411 Electric shock device 2000 DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present application, the present application is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in this specification and in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0027] This application provides an electrical device 1, see Figure 1 . The electrical equipment 1 includes an electric shock device 2000 and a power module 1000. The power module 1000 is installed in the electric shock device 2000 and provides electric energy to the electric shock device 2000. It should be noted that the electric shock device 2000 is an electronic device that is often used by law enforcement departments in the process of law enforcement. In an actual use environment with changing situations, it is possible to be robbed. Therefore, when the electric shock device 2000 is robbed or has been robbed, if the electric shock device 2000 can still work, it will bring safety hazards to law enforcement personnel. When the electric shock device 2000 is taken back and still needs to be used, the working efficiency of the electric shock device 2000 that cannot be restarted is greatly reduced. Therefore, for this situation, the aforementioned power module 1000 has been improved.

[0028] For the aforementioned power module 1000, see Figures 2 to 4, and in combination with other drawings. The power module 1000 includes: a power assembly 100, a contact assembly 200, a first elastic member 300 and a terminal assembly 400. The power assembly 100 is provided with a positive electrode 110 and a negative electrode 120. The contact assembly 200 is concavely provided with a plug-in slot 210, and the contact assembly 200 is electrically connected to the positive electrode 110. The first elastic member 300 is installed in the plug-in slot 210, and the first elastic member 300 is electrically connected to the contact assembly 200. The terminal assembly 400 includes a terminal 410, which can be movably plugged into the first elastic member 300, and the terminal 410 is electrically connected to the other of the negative electrodes 120. The terminal assembly 400 can be switched between a power-on state and a power-off state; in the power-on state, the terminal 410 is plugged into the first elastic member 300, and the positive electrode 110, the contact assembly 200, the first elastic member 300, the terminal 410 and the negative electrode 120 form a path; in the power-off state, the terminal 410 is disconnected from the first elastic member 300 to form a circuit. It can be understood that the first elastic member 300 at least partially abuts against the slot wall of the plug-in slot 210, and a gap is left between the first elastic member 300 and the slot wall for the first elastic member 300 to deform, so that when the terminal 410 is plugged into the first elastic member 300, the first elastic member 300 and the terminal 410 abut stably, thereby ensuring the current path; on the other hand, by utilizing the elasticity of the first elastic member 300, when the terminal 410 needs to leave the plug-in slot 210, the elastic force of the first elastic member 300 when it is reset can also be used to push the terminal 410 out of the plug-in slot 210, thereby improving the power-off efficiency. With the above structure, when the power module 1000 is working, the terminal assembly 400 is in a powered state. When an emergency circuit break is required, the terminal 410 is pulled out to disconnect the terminal 410 from the first elastic member 300, thereby forming a circuit break. The elasticity of the first elastic member 300 is utilized to realize multiple plugging and unplugging of the terminal 410, thereby realizing the function of multiple power break.

[0029] For further information, see Figure 5, and in combination with other drawings. The first elastic member 300 is hollowly provided with an elastic cavity 310. The terminal 410 is provided with a plug-in end 411. In the power-on state, the plug-in end 411 is plugged into the elastic cavity 310, and the cavity of the elastic cavity 310 is enlarged. In the power-off state, the plug-in end 411 leaves the elastic cavity 310, and the elastic cavity 310 is reset. Through the above structure, the plug-in end 411 is inserted into the elastic cavity 310, so that the first elastic member 300 is deformed, and the first elastic member 300 is electrically connected to the terminal 410; when the terminal 410 needs to leave the plug-in slot 210, the elastic force of the first elastic member 300 during the reset can also be used to push the terminal 410 out of the plug-in slot 210, thereby improving the power-off efficiency. Optionally, the first elastic member 300 includes a crown spring, a spring, a spring sheet, etc. Preferably, the first elastic member 300 is a crown spring, and the two ends of the crown spring abut against the slot wall of the plug-in slot 210, and the elastic cavity 310 is hollowly provided in the crown spring. When the first elastic member 300 is configured as a spring, the inner diameter of the spring should be smaller than the diameter of the plug-in end 411, so as to facilitate abutment with the plug-in end 411 and prevent the inner diameter of the spring from being too large to abut against the terminal 410, causing elastic failure; when the first elastic member 300 is configured as a spring sheet, the distance between the spring sheets on both sides should be smaller than the diameter of the plug-in end 411, so as to facilitate abutment with the plug-in end 411 and prevent the distance between the spring sheets on both sides from being too large to abut against the terminal 410, causing elastic failure.

[0030] For terminal 410 above, see Figure 5 and Figure 6 , and in combination with other drawings. The terminal 410 is also provided with a first limiting portion 412, which is provided on the other side of the plug-in end 411 for inserting into the elastic cavity 310, and the diameter of the first limiting portion 412 is greater than the diameter of the notch of the plug-in slot 210. Optionally, the first limiting portion 412 can be a boss-shaped or a step-shaped. In the embodiment of the present application, the first limiting portion 412 is provided adjacent to the plug-in end 411, and the first limiting portion 412 is provided in an inclined surface. The diameter of the terminal 410 gradually increases from the plug-in end 411 to the first limiting portion 412, and an inner concave portion is provided at the first limiting portion 412. Therefore, when the terminal 410 is inserted into the plug-in slot 210, after the plug-in end 411 extends into the elastic cavity 310, the terminal 410 can still be further pushed into the elastic cavity 310, thereby improving the electrical connection stability between the terminal 410 and the first elastic member 300.

[0031] In the embodiments of this application, please refer to Figure 5 and Figure 6, and in combination with other drawings. The terminal assembly 400 also includes a base 420, the base 420 is provided with a mounting portion 421, the terminal 410 is provided with a mounting column 414, and the mounting column 414 is installed on the mounting portion 421. Specifically, the terminal 410 is also provided with a second limiting portion 413, the plug-in end 411 and the mounting column 414 are provided on both sides of the first limiting portion 412, and the second limiting portion 413 is provided at one end of the mounting column 414 away from the first limiting portion 412. The base 420 is provided with a third limiting portion 422, and the terminal 410 and the base 420 are fixed by the clamping of the second limiting portion 413 and the third limiting portion 422.

[0032] It is necessary to explain that the terminal assembly 400 also includes a flexible member (not shown), which is connected to the side of the base 420 away from the terminal 410, and the flexible member is used to install the terminal assembly 400 on a device or a human body outside the electric shock device. Therefore, when the electric shock device 2000 is robbed again, the terminal 410 can be pulled out by fixing the flexible member to disconnect the terminal 410 and the first elastic member 300 to form a circuit breaker.

[0033] For further information, see Figure 6 , and in combination with other drawings. The terminal assembly 400 further includes a fixed plug 430, which includes a plug portion 431 and an anti-fool portion 432. The plug portion 431 is arranged around the mounting portion 421, and the anti-fool portion 432 extends from the fixed plug 430 toward a direction away from the mounting portion 421; accordingly, the base 420 is provided with an anti-fool groove 423, the fixed plug 430 is installed in the anti-fool groove 423, the anti-fool portion 432 is flush with the surface of the base 420, and the plug portion 431 protrudes relative to the surface of the base 420.

[0034] For the above-mentioned contact assembly 200, please refer to Figure 4 , and in combination with other drawings. The contact assembly 200 includes a column 220 and a contact terminal 230, the contact terminal 230 is electrically connected to the positive electrode 110, the column 220 is threadedly connected to the contact terminal 230, and the plug-in slot 210 is provided on the column 220. By providing the threaded column 220 and the contact terminal 230, the structure of the contact assembly 200 is stabilized, and the contact assembly 200 is prevented from shaking or rotating, which may interfere with the circuit.

[0035] In the embodiments of this application, please refer to Figure 4, and in combination with other drawings. The power module 1000 also includes a mounting base 500, which includes a main body 510 and a bottom plate 520. The main body 510 and the bottom plate 520 together enclose a first receiving cavity 530, the column 220 is at least partially inserted into the first receiving cavity 530, and the notch of the plug-in slot 210 is exposed in the first receiving cavity 530. In the power-on state, the terminal 410 passes through the first receiving cavity 530 and is plugged into the first elastic member 300 in the plug-in slot 210. In the power-off state, the terminal 410 leaves the plug-in slot 210, and / or the terminal 410 leaves the first receiving cavity 530. It is worth mentioning that the column 220 is plugged and fixed to the main body 510, thereby preventing the column 220 from shaking. The bottom plate 520 is provided, on the one hand, for installing the main body 510, the power assembly 100 and other structures, and on the other hand, for clamping with the shell of the electric shock device 2000, thereby forming a space for accommodating the power module 1000.

[0036] For further information, see Figure 5 , and in combination with other drawings. The bottom plate 520 is provided with a through hole 521, which is in communication with the first receiving cavity 530, and the through hole 521 is arranged corresponding to the plug slot 210, and the through hole 521 is used for the terminal 410 to extend into the first receiving cavity 530. Optionally, the bottom plate 520 is also provided with a groove 522, and the groove 522 is arranged around the through hole 521. When the terminal 410 assembly is in a powered state, the plug 431 and the groove 522 are interference-fitted, so that the terminal 410 is inserted into the plug slot 210 through the first receiving cavity 530, so that the terminal 410 and the first elastic member 300 are electrically connected to form a passage.

[0037] In conjunction with the above structure, please refer to Figure 5 , and in combination with other drawings. The column 220 is provided with a clamping portion 221, which is arranged around one end of the column 220 inserted into the first receiving cavity 530, and the clamping portion 221 and the contact terminal 230 are clamped together on the main body 510. Thus, the contact terminal 230 and the column 220 can be stably clamped and fixed on the main body 510 to prevent the column 220 and the contact terminal 230 from shaking. When installing, the column 220 is first inserted into the main body 510 from the first receiving cavity 530, and then the column 220 and the contact terminal 230 are threadedly connected by rotating the contact terminal 230, so as to facilitate installation; when disassembling, the contact terminal 230 is rotated to release the threaded fit between the contact terminal and the column 220, so as to pull the column 220 out of the main body 510 for easy disassembly.

[0038] In the embodiments of this application, please refer to Figures 3 to 5, and in combination with other drawings. The power supply assembly 100 includes a power supply 130, a circuit board 140 and an elastic clamping portion 150, the positive electrode 110 and the negative electrode 120 are arranged on the power supply 130, the circuit board 140 is installed on the side of the power supply 130 where the positive electrode 110 is arranged, and the elastic clamping portion 150 is installed on the bottom plate 520, and the elastic clamping portion 150 is arranged on the side of the power supply 130 where the negative electrode 120 is arranged. The elastic clamping portion 150 is used to clamp the above-mentioned terminal 410, specifically clamping the inner concave portion at the first limit portion 412 of the terminal 410. In the power-on state, the elastic clamping portion 150 is used to clamp the terminal 410. It is worth mentioning that the power supply 130 includes a rechargeable battery, a general battery (for example: No. 1 battery, No. 5 battery, No. 7 battery) or a battery pack, etc. It should still be explained that the main body 510 and the circuit board 140 together enclose a second receiving cavity 540, and the second receiving cavity 540 is used to receive the power supply 130. The circuit board 140 is the power supply 130 circuit board 140, which is used to protect the power supply 130 on the one hand, and to control and output electric energy on the other hand. It should be noted that the elastic clamping portion 150 includes two metal springs arranged opposite to each other. The two metal springs are arranged opposite to each other in a direction perpendicular to the axis of the through hole 521, and the two metal springs are used to clamp the terminal 410 together.

[0039] For further information, see Figure 3 The power supply assembly 100 further includes a second elastic member 160, which is connected between the contact terminal 230 and the circuit board 140. The second elastic member 160 is a compression spring, which is used to push the circuit board 140 and the contact terminal 230, thereby improving the connection stability of the circuit.

[0040] In combination with the above embodiments, the power-on state and the power-off state of the present application are further described. First, in the power-on state, the terminal 410 is plugged into the first elastic member 300, and the positive electrode 110, the contact assembly 200, the first elastic member 300, the terminal 410 and the negative electrode 120 form a path; in the power-off state, the terminal 410 is disconnected from the first elastic member 300 to form a circuit. Specifically, in the power-on state, the positive electrode 110, the second elastic member 160, the contact terminal 230, the column 220, the first elastic member 300, the terminal 410, the elastic clamping portion 150, the negative electrode 120, and the circuit board 140 are electrically connected in sequence to form a circuit path. At this time, the plug-in end 411 is inserted into the elastic cavity 310 to electrically connect the terminal 410 with the first elastic member 300, and the first limiting portion 412 is clamped by the elastic clamping portion 150, so that the terminal 410 and the negative electrode 120 are electrically connected. In the power-off state, the electrical connection between the first elastic member 300 and the terminal 410 is disconnected, forming a short circuit. At this time, the terminal 410 is pulled out by dragging the flexible member. When the plug-in end 411 leaves the plug-in slot 210 or the first receiving cavity 530, the electrical connection between the first elastic member 300 and the terminal 410 is disconnected. Since the first elastic member 300 and the elastic clamping portion 150 are both elastic and resetting structures, the circuit path can be restored by reinserting the terminal 410 at this time. Thus, the function of multiple plug-ins and multiple power-offs is achieved.

[0041] The embodiment of the present application provides a power module 1000, which includes a power assembly 100, a contact assembly 200, a first elastic member 300 and a terminal assembly 400. The power assembly 100 is provided with a positive electrode 110 and a negative electrode 120. The contact assembly 200 is concavely provided with a plug-in slot 210, and the contact assembly 200 is electrically connected to the positive electrode 110. The first elastic member 300 is installed in the plug-in slot 210, and the first elastic member 300 is electrically connected to the contact assembly 200. The terminal assembly 400 includes a terminal 410, which can be movably plugged into the first elastic member 300, and the terminal 410 is electrically connected to the other of the negative electrodes 120. The terminal assembly 400 can be switched between a power-on state and a power-off state; in the power-on state, the terminal 410 is plugged into the first elastic member 300, and the positive electrode 110, the contact assembly 200, the first elastic member 300, the terminal 410 and the negative electrode 120 form a passage; in the power-off state, the terminal 410 is disconnected from the first elastic member 300 to form a circuit break. Through the above structure, when the power module 1000 is working, the terminal assembly 400 is in a power-on state. When an emergency circuit break is required, the terminal 410 is pulled out to disconnect the terminal 410 from the first elastic member 300 to form a circuit break. The elasticity of the first elastic member 300 is used to realize multiple plugging and unplugging of the terminal 410, thereby realizing the function of multiple power break.

[0042] Based on the same inventive concept, the present application also provides an electrical device 1, which includes the above-mentioned electric shock device 2000 and a power module 1000. The power module 1000 is installed in the motor device. The structure and function of the power module 1000 can be found in the above-mentioned embodiment, which will not be described one by one here.

[0043] It should be noted that the preferred embodiments of the present application are given in the specification and drawings of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described in the specification. These embodiments are not used as additional limitations on the content of the present application. The purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. In addition, the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all regarded as the scope of the description of the present application; further, for ordinary technicians in this field, they can be improved or transformed according to the above description, and all these improvements and transformations should belong to the scope of protection of the claims attached to the present application.

Claims

1. A power module, characterized in that: include: A power supply component is provided with a positive electrode and a negative electrode; A contact assembly, the inner portion of which is provided with a plug-in slot, and the contact assembly is electrically connected to the positive electrode; A first elastic member, mounted in the plug slot, the first elastic member being electrically connected to the contact assembly; A terminal assembly, comprising a terminal, the terminal being movably plugged into the first elastic member, the terminal being electrically connected to another one of the negative electrodes; The terminal assembly can be switched between a power-on state and a power-off state; In the power-on state, the terminal is plugged into the first elastic member, and the positive electrode, the contact assembly, the first elastic member, the terminal and the negative electrode form a passage; In the power-off state, the terminal is disconnected from the first elastic member to form a short circuit.

2. The power module according to claim 1, characterized in that: The first elastic member is hollow and has an elastic cavity; The terminal is provided with a plug-in end. In the power-on state, the plug-in end is plugged into the elastic cavity, and the cavity of the elastic cavity is enlarged. In the power-off state, the plug-in end leaves the elastic cavity, and the elastic cavity is reset.

3. The power module according to claim 2, characterized in that: The terminal is further provided with a first limiting portion, which is arranged on the other side of the plug-in end for inserting into the elastic cavity, and the diameter of the first limiting portion is greater than the diameter of the plug-in slot.

4. The power module according to any one of claims 1 to 3, characterized in that: The terminal assembly also includes a base, the base is provided with a mounting portion, the terminal is provided with a mounting column, and the mounting column is mounted on the mounting portion.

5. The power module according to claim 4, characterized in that: The contact assembly comprises a column and a contact terminal, the contact terminal is electrically connected to the positive electrode, the column is threadedly connected to the contact terminal, and the insertion slot is arranged on the column.

6. The power module according to claim 5, characterized in that: The power module further includes a mounting base, the mounting base includes a main body and a bottom plate, the main body and the bottom plate together enclose a first receiving cavity, the column is at least partially inserted into the first receiving cavity, and the notch of the plug slot is exposed in the first receiving cavity; In the power-on state, the terminal passes through the first receiving cavity and is plugged into the first elastic member in the plug-in slot; In the power-off state, the terminal leaves the plug-in slot, and / or the terminal leaves the first receiving cavity.

7. The power module according to claim 6, characterized in that: The bottom plate is provided with a through hole, the through hole is communicated with the first receiving cavity, the through hole is arranged corresponding to the plug-in slot, and the through hole is used for the terminal to extend into the first receiving cavity.

8. The power module according to claim 6, characterized in that: The column is provided with a clamping portion, the clamping portion is arranged around one end of the column inserted into the first receiving cavity, and the clamping portion and the contact end are clamped together by the main body.

9. The power module according to claim 6, characterized in that: The power supply assembly includes a power supply, a circuit board and an elastic clamping part, the positive electrode and the negative electrode are arranged on the power supply, the circuit board is installed on the side of the power supply where the positive electrode is arranged, the elastic clamping part is installed on the bottom plate, and the elastic clamping part is arranged on the side of the power supply where the negative electrode is arranged; In the power-on state, the elastic clamping portion is used to clamp the terminal.

10. An electrical device, characterized in that: It comprises an electric shock device and a power supply module as described in any one of claims 1 to 9, wherein the power supply module is used to supply power to the electric shock device.

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