Quick-release battery pack with charging protection function

Abstract

The utility model provides a quick release type battery pack with charging protection, which comprises a rechargeable battery, a charging adapter and a battery compartment, the battery compartment is used for being arranged on electric equipment, and the rechargeable battery is detachably arranged in the battery compartment through a lock catch structure. The rechargeable battery supplies power to the electric equipment through the battery compartment; the rechargeable battery is charged through the charging adapter; the rechargeable battery is provided with a first power connection terminal and a trigger boss, the charging adapter is provided with a second power connection terminal used for being detachably and electrically connected with the first power connection terminal, a trigger hole used for allowing the trigger boss to be inserted in and a charging terminal used for charging, and a trigger switch is arranged in the trigger hole. The second power connection terminal is connected with the charging terminal through the trigger switch, and the trigger boss directly or indirectly triggers the trigger switch to be closed by being inserted into the trigger hole.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a quick-detachable battery pack with charging protection. Background Art

[0002] With the development of science and technology, the continuous improvement of battery technology, various handheld portable devices are increasingly appearing in people's production and life. People have higher demands for fast battery replacement and convenient and safe charging of various handheld portable devices. The quick-release battery packs on the market are relatively complicated to release, the quick-release structure is large in size, and the quick-release lock is set on the outside of the fuselage, which may cause the risk of the lock being loosened due to squeezing the outside of the fuselage. At the same time, charging requires a large charging base, which is not portable enough. When the charging base is powered, it is easy to cause accidental touch and conduction, resulting in a short circuit in the charging base. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a quick-detachable battery pack with charging protection, comprising a rechargeable battery, a charging conversion head and a battery compartment, wherein the battery compartment is used to be arranged on an electrical device, the rechargeable battery is detachably installed in the battery compartment through a locking structure, and the rechargeable battery supplies power to the electrical device through the battery compartment;

[0004] The rechargeable battery is charged through the charging conversion head; the rechargeable battery is provided with a first power terminal and a trigger boss, the charging conversion head is provided with a second power terminal for detachable electrical connection with the first power terminal, a trigger hole for inserting the trigger boss and a charging terminal for charging, a trigger switch is provided in the trigger hole, the second power terminal is connected to the charging terminal through the trigger switch, and the trigger boss directly or indirectly triggers the closure of the trigger switch by being inserted into the trigger hole.

[0005] Preferably, the battery compartment is a shell structure with an opening at one end, and the lock structure includes a bayonet and a lock buckle, the bayonet is respectively provided on both sides of the interior of the open end of the battery compartment, and notches are respectively provided on both sides of the surface of one end of the rechargeable battery, and a lock buckle is symmetrically provided on both sides of the interior of the end of the rechargeable battery, and the lock buckle includes an unlocking pressing part and a locking tongue part which are integrally arranged, and the unlocking pressing parts of the two lock buckles are respectively arranged in the two notches, and a reset spring is provided between the two unlocking pressing parts, one end of the locking tongue part is fixedly connected to the unlocking pressing part, and the other end can be extended to the outside of the rechargeable battery under the action of the reset spring, and the rechargeable battery is elastically connected to the battery compartment by inserting it into the corresponding bayonet; the locking tongue part is disengaged from the bayonet by pressing the two unlocking pressing parts.

[0006] Preferably, when the rechargeable battery is installed in the battery compartment, the rechargeable battery is flush with the opening end of the battery compartment.

[0007] Preferably, the rechargeable battery comprises a battery housing and a battery pack, wherein the battery pack is disposed in the battery housing and is electrically connected to the first power terminal;

[0008] The battery housing comprises a battery cover and a battery hood, wherein the battery cover is a shell structure with one end open, and the battery is contained in the battery cover; the battery cover comprises a cover plate and a cover plate base, wherein the cover plate base is fixedly connected to the open end of the battery cover, and the cover plate is fixed on the cover plate base;

[0009] The notch is opened on the outer surface of the cover plate, and an installation space for installing the return spring and the lock is formed between the cover plate and the cover plate base. The installation space is connected to the notch, and the unlocking pressing part of the lock extends from the installation space into the notch.

[0010] Preferably, the battery cover is also provided with a power display button and a power indicator light, and a power display board is also provided in the installation space between the cover and the cover base, and the battery pack is electrically connected to the power display button and the power indicator light respectively through the power display board.

[0011] Preferably, an electrical connection installation notch for installing the charging conversion head is provided at one end portion of the rechargeable battery, and the first power terminal and the trigger boss are both arranged on the end surface of the electrical connection installation notch.

[0012] Preferably, a mounting protrusion adapted to the electrical connection mounting notch is provided at the bottom of the battery compartment, and a third electrical terminal detachably electrically connected to the first electrical terminal is provided on the mounting protrusion.

[0013] Preferably, a trigger device is further provided in the trigger hole, and the trigger device is movably arranged in the trigger hole. The trigger boss triggers the trigger switch to close by pushing the trigger device.

[0014] Preferably, the trigger device is movably connected to the elastic pressing portion of the trigger switch.

[0015] Preferably, the second power connection terminal, the charging terminal and the trigger hole are located on the same end surface of the charging conversion head, and the charging terminal is located on the other end surface of the charging conversion head.

[0016] Compared with the prior art, the utility model has the following technical effects:

[0017] 1. Inside the battery compartment, the rechargeable battery and the battery compartment are detachably connected through a locking structure, that is, the locking structure is located inside the battery compartment, not outside the body of the electrical device. Therefore, it can prevent the rechargeable battery from loosening and the electrical connection of the rechargeable battery from being broken due to external squeezing of the body.

[0018] 2. Since the unlocking pressing part of the lock of the rechargeable battery is hidden in the notch on the exposed surface of the rechargeable battery, and the notch is lower than the exposed surface of the rechargeable battery, when the rechargeable battery is inserted, the lock is within the coverage of the battery compartment, thereby preventing the rechargeable battery lock from being squeezed by external impact, causing the rechargeable battery to loosen and the electrical connection of the rechargeable battery to be broken. When the rechargeable battery needs to be quickly removed and pulled out, the lock can be released and the rechargeable battery can be pulled out at the same time by pressing the lock unlocking pressing part on both side walls of the notch with fingers.

[0019] 3. When the rechargeable battery is being charged, the charging adapter is electrically connected to the power supply end through the charging terminal. At this time, the charging adapter is in a circuit-breaking protection state because the trigger switch is not pressed and triggered. When the charging adapter is inserted into the rechargeable battery, the first power terminal of the rechargeable battery is electrically connected to the second power terminal of the charging adapter. When the charging adapter is plugged into place, the cylindrical protrusion on the rechargeable battery triggers the trigger switch. At this time, the charging circuit is in a path, thereby realizing charging of the battery. Since the charging adapter is inserted into the rechargeable battery at the initial moment of charging, the trigger switch is not triggered. At this time, the entire charging circuit is in a circuit-breaking state, thereby effectively avoiding arc breakdown and ignition when the charging adapter is inserted into the rechargeable battery, thereby realizing safe charging. When the charging adapter is unplugged, the top pressure of the charging adapter is released, and the trigger switch of the charging adapter is pressed and released. The entire charging circuit is in a circuit-breaking state, thereby realizing safety protection and preventing accidental short circuit.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 is a disassembly diagram of a battery pack provided by an embodiment of the utility model;

[0023] Figure 2 This is an assembly diagram of a rechargeable battery and a charging conversion head provided by an embodiment of the utility model;

[0024] Figure 3 It is an assembly diagram of a rechargeable battery and a battery compartment provided by an embodiment of the utility model;

[0025] Figure 4 This is a disassembly diagram of a rechargeable battery and a charging adapter provided in one embodiment of the utility model;

[0026] Figure 5 This is a disassembled diagram of a rechargeable battery and a battery compartment provided in one embodiment of the utility model;

[0027] Figure 6 It is a cross-sectional view of a rechargeable battery and a charging adapter provided by an embodiment of the utility model in an assembled state;

[0028] Figure 7 It is a cross-sectional view of a rechargeable battery and a battery compartment in an assembled state provided by an embodiment of the utility model. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] The following specific embodiments are used to describe the technical solution of the utility model in detail. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0031] Please refer to Figures 1 to 7 The utility model provides a quick-release battery pack with charging protection, including a rechargeable battery 1, a charging adapter 2 and a battery compartment 3. The battery compartment 3 is arranged on an electric device, and the rechargeable battery 1 supplies power to the electric device through the battery compartment 3. The utility model does not limit the specific type of the electric device, and all devices that can be powered by batteries are within the protection scope of the utility model, such as the electric device can be a handheld portable device or a non-handheld device. At the same time, the utility model does not specifically limit the type of rechargeable battery, such as a lithium battery.

[0032] The rechargeable battery 1 is arranged in the battery compartment 3, and inside the battery compartment 3, the rechargeable battery 1 is detachably connected to the battery compartment 3 through a lock structure, that is, the battery compartment 3 locks the rechargeable battery 1 through a built-in lock structure. Since the lock structure is a mature technology in this field, the utility model does not limit the specific structure of the lock structure. As long as the rechargeable battery 1 is detachable in the battery compartment 3, and the detachable method is achieved through the lock structure, it belongs to the protection scope of the utility model. Since the lock structure has the function of quick installation and disassembly, the quick installation and quick disassembly of the rechargeable battery 1 and the battery compartment 3 are realized. Since the lock structure is located inside the battery compartment 3, not on the outside of the body of the electrical device, it can prevent the rechargeable battery 1 from loosening due to external squeezing of the body.

[0033] In this embodiment, the built-in lock structure includes a bayonet and a lock, and the specific implementation method is as follows:

[0034] The battery compartment 3 is a shell structure with one end open. As to whether the open end of the battery compartment 3 has a cover, this embodiment does not limit this, that is, the battery compartment 3 can have a cover or not. The inner two sides of the open end of the battery compartment 3 are respectively provided with a bayonet 301, and the two sides of the surface of one end of the rechargeable battery 1 are respectively provided with a notch 102, that is, the two notches 102 are arranged at intervals, that is, the two notches 102 are separated by the end surface of the rechargeable battery 1 and are not connected. A lock buckle 103 is symmetrically arranged on both sides of the inner side of the end of the rechargeable battery 1, and the lock buckle 103 includes an unlocking pressing part 1032 and a locking tongue part 1031 which are arranged integrally. The unlocking pressing parts 1032 of the two lock buckles 103 are arranged in the two notches 102 respectively, and a reset spring 113 is arranged between the two unlocking pressing parts 1032. One end of the locking tongue part 1031 is integrally connected with the unlocking pressing part 1032, and the other end can be extended to the outside of the rechargeable battery 1 under the action of the reset spring 113, and the rechargeable battery 1 is elastically engaged with the battery compartment 3 by being inserted into the corresponding bayonet 301, thereby locking the rechargeable battery 1 with the battery compartment 3. When the rechargeable battery 1 needs to be removed from the battery compartment 3, it is only necessary to manually press the two unlocking pressing parts 1032 towards each other at the same time, and the locking tongue part 1031 will be disengaged from the bayonet 301, thereby unlocking the rechargeable battery 1 with the battery compartment 3. When the two unlocking pressing portions 1032 are released, the return spring 113 pushes the locking tongue portion 1031 to extend out of the rechargeable battery 1 .

[0035] In this embodiment, the battery compartment 3 covers the entire rechargeable battery 1. In order to facilitate the rechargeable battery 1 to be completely stored in the battery compartment 3 without wasting the material of the battery compartment 3, when the rechargeable battery 1 is installed in the battery compartment 3, the rechargeable battery 1 is flush with the opening end of the battery compartment 3.

[0036] In this embodiment, in order to facilitate manual operation and prevent external force from accidentally touching the unlocking pressing portion 1032 of the lock buckle 103 , it is preferred that the unlocking pressing portion 1032 is perpendicular to the end surface of the rechargeable battery 1 .

[0037] The rechargeable battery 1 includes a battery housing 101 and a battery pack 112 , wherein the battery pack 112 is disposed in the battery housing 101 .

[0038] The battery housing 101 includes a battery cover 1011 and a battery cover 1012 . The battery cover 1012 is a shell structure with one end open. The battery pack 112 is accommodated in the battery cover 1012 .

[0039] The battery cover 1011 includes a cover plate 10111 and a cover plate base 10112 . The cover plate base 10112 is fixedly connected to the open end of the battery cover 1012 , and the cover plate 10111 is fixed on the cover plate base 10112 .

[0040] The slot 102 is opened on the outer surface of the cover plate 10111, and an installation space for installing the return spring 113 and the lock buckle 103 is formed between the cover plate 10111 and the cover plate base 10112. The installation space is connected to the slot 102, and the unlocking pressing part 1032 of the lock buckle 103 extends from the installation space into the slot 102.

[0041] The cover plate 10111 may also be provided with a power display button 106 and a power indicator light 105, and a power display board 107 is further provided in the installation space between the cover plate 10111 and the cover plate base 10112, and the battery pack 112 is electrically connected to the power display button 106 and the power indicator light 105 through the power display board 107. Specifically, the battery pack 112 is provided with a power display interface 108, and the power display interface 108 is connected to the power display board 107.

[0042] In order to realize safe charging of the rechargeable battery 1, the rechargeable battery 1 is charged through the charging adapter 2. The charging adapter 2 can be charged by directly connecting to an external power source, or by connecting to an external power source through an adapter. The present invention does not impose any specific restrictions on this.

[0043] The charging circuit for charging the rechargeable battery 1 through the charging conversion head 2 has a charging short-circuit protection function. Specifically, the rechargeable battery 1 is provided with a first power terminal 110 and a trigger boss 111, and the battery pack 112 is provided with an electrical connection interface 109, and the electrical connection interface 109 is electrically connected to the first power terminal 110. The charging conversion head 2 is provided with a second power terminal 202 for detachable electrical connection with the first power terminal 110, a trigger hole 201 for inserting the trigger boss 111, and a charging terminal 205 for charging. The utility model does not specifically limit the detachable electrical connection between the first power terminal 110 and the second power terminal 202, such as a magnetic electrical connection or a plug-in electrical connection, such as in the first power terminal 110 and the second power terminal 202, one is a male power terminal, and the other is a female power terminal adapted to the male power terminal, and the male power terminal and the female power terminal are pluggable. A trigger switch 204 is disposed in the trigger hole 201 , and the second power terminal 202 is connected to the charging terminal 205 via the trigger switch 204 . The trigger boss 111 is inserted into the trigger hole 201 to directly or indirectly trigger the trigger switch 204 to close.

[0044] In order to facilitate the installation of the charging conversion head 2 on the rechargeable battery 1, an electrical connection installation notch 104 for installing the charging conversion head 2 is provided at one end of the rechargeable battery 1 (this end is the end opposite to the battery cover 1011 and is also the end extending into the battery compartment 3), and the first power terminal 110 and the trigger boss 111 are both arranged on the end surface of the electrical connection installation notch 104.

[0045] The present embodiment does not impose any specific limitation on the size of the electrical connection installation notch 104 , which can be set according to the size of the charging adapter 2 .

[0046] The second power terminal 202 and the trigger hole 201 are located at the same end of the charging conversion head 2 , and the charging terminal 205 is located at the other end of the charging conversion head 2 .

[0047] The bottom of the battery compartment 3 is provided with a mounting protrusion 302 adapted to the electrical connection mounting notch 104, and the mounting protrusion 302 is provided with a third electrical terminal 303 adapted to the first electrical terminal 110. When the rechargeable battery 1 is installed in the battery compartment 3, the first electrical terminal 110 is electrically connected to the third electrical terminal 303. The third electrical terminal 303 is used to electrically connect to an electrical device. The utility model does not impose specific restrictions on the detachable electrical connection method of the second electrical terminal 202 and the third electrical terminal 303, such as a magnetic electrical connection or a plug-in electrical connection. For example, in the second electrical terminal 202 and the third electrical terminal 303, one is a male electrical terminal and the other is a female electrical terminal adapted to the male electrical terminal, and the male electrical terminal and the female electrical terminal are pluggable.

[0048] As an embodiment, when the trigger boss 111 indirectly triggers the trigger switch 204 to close by inserting into the trigger hole 201, a trigger device is also provided in the trigger hole 201, and the trigger device is movably arranged in the trigger hole 201. The trigger boss 111 pushes the trigger device to trigger the trigger switch 204 to close. This embodiment does not limit the specific structure of the trigger device, as long as the trigger boss 111 can push to trigger the trigger switch 204 to close, such as the cylindrical pin 203 shown in the figure. This embodiment does not limit the type of trigger switch 204, such as a micro switch or a trigger switch 204. The trigger switch 204 is a normally open type, and the trigger device is movably connected to the elastic pressing part of the trigger switch 204. When the trigger boss 111 is inserted into the trigger hole 201, the trigger device will be pushed to press the elastic pressing part of the trigger switch 204, triggering the trigger switch 204 to close; when the trigger boss 111 is pulled out of the trigger hole 201, the elastic pressing part of the trigger switch 204 will push the trigger device to reset, and finally the trigger switch 204 will be disconnected.

[0049] Working principle of charging short circuit protection of rechargeable battery 1 through charging adapter 2:

[0050] When the rechargeable battery 1 is being charged, the charging converter 2 is electrically connected to the power supply end through the charging terminal 205. At this time, the charging converter 2 is in a circuit-breaking protection state because the trigger switch 204 is not pressed and triggered. When the charging converter 2 is inserted into the electrical connection installation notch 104 of the rechargeable battery 1, the first power terminal 110 of the rechargeable battery 1 is electrically connected to the second power terminal 202 of the charging converter 2. When the charging converter 2 is plugged into place, the cylindrical protrusion on the electrical connection installation notch 104 of the rechargeable battery 1 presses the cylindrical pin 203 of the charging converter 2 to press the elastic pressing part of the trigger switch 204 to trigger the trigger switch 204. At this time, the charging circuit is in a pass, thereby realizing charging of the battery. Since the charging converter 2 is inserted into the rechargeable battery 1 at the initial moment of charging, the trigger switch 204 is in a non-pressed state, and the entire charging circuit is in a circuit-breaking state, thereby effectively avoiding arc breakdown and ignition at the moment when the charging converter 2 is inserted into the rechargeable battery 1, thereby realizing safe charging. When the charging converter 2 is unplugged, the cylindrical pin 203 of the charging converter 2 is pressed and released, and the trigger switch 204 of the charging converter 2 is pressed and released, and the entire charging circuit is in an open circuit state, thereby achieving safety protection and preventing accidental short circuit.

[0051] Working principle of built-in lock structure:

[0052] The rechargeable battery 1 is inserted from the opening end of the battery compartment 3, and the battery compartment 3 covers the entire rechargeable battery 1. The battery compartment 3 is provided with bayonet holes 301 at positions corresponding to the lock buckles 103 on both sides of the rechargeable battery 1, respectively, for locking and limiting the rechargeable battery 1. The bottom of the battery compartment 3 is provided with a mounting protrusion 302 corresponding to the shape and size of the electrical connection notch 104 of the rechargeable battery 1, and the mounting protrusion 302 is provided with a third electrical terminal 303. After the rechargeable battery 1 is inserted into the battery compartment 3, the first electrical terminal 110 of the rechargeable battery 1 is electrically connected to the third electrical terminal 303 of the battery compartment 3. At the same time, since the unlocking pressing portion 1032 of the lock buckle 103 of the rechargeable battery 1 is hidden in the notch 102 of the exposed surface of the rechargeable battery 1, and the notch 102 is lower than the exposed surface of the rechargeable battery 1, when the rechargeable battery 1 is inserted, the lock buckle 103 is within the coverage range of the battery compartment 3, thereby preventing the rechargeable battery 1 from being loosened or the electrical connection of the rechargeable battery 1 from being broken due to external impact and extrusion. When the rechargeable battery 1 needs to be quickly removed and pulled out, the unlocking pressing portion 1032 of the lock buckle 103 at the two side walls of the notch 102 can be pressed with fingers to release the lock and pull out the rechargeable battery 1 at the same time.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A quick-release battery pack with charging protection, characterized in that: It includes a rechargeable battery, a charging conversion head and a battery compartment, wherein the battery compartment is used to be arranged on an electrical device, the rechargeable battery is detachably installed in the battery compartment through a locking structure, and the rechargeable battery supplies power to the electrical device through the battery compartment; The rechargeable battery is charged through the charging conversion head; the rechargeable battery is provided with a first power terminal and a trigger boss, the charging conversion head is provided with a second power terminal for detachable electrical connection with the first power terminal, a trigger hole for inserting the trigger boss and a charging terminal for charging, a trigger switch is provided in the trigger hole, the second power terminal is connected to the charging terminal through the trigger switch, and the trigger boss directly or indirectly triggers the closure of the trigger switch by being inserted into the trigger hole.

2. The battery pack according to claim 1, characterized in that: The battery compartment is a shell structure with an opening at one end, and the lock structure includes a bayonet and a lock buckle. The bayonet is respectively provided on both sides of the inner part of the open end of the battery compartment, and slots are respectively provided on both sides of the surface of one end of the rechargeable battery, and a lock buckle is symmetrically provided on both sides of the inner part of the end of the rechargeable battery, and the lock buckle includes an unlocking pressing part and a locking tongue part which are integrally arranged, and the unlocking pressing parts of the two lock buckles are respectively arranged in the two slots, and a reset spring is provided between the two unlocking pressing parts, one end of the locking tongue part is fixedly connected to the unlocking pressing part, and the other end can be extended to the outside of the rechargeable battery under the action of the reset spring, and the rechargeable battery is elastically connected to the battery compartment by inserting it into the corresponding bayonet; the locking tongue part is disengaged from the bayonet by pressing the two unlocking pressing parts.

3. The battery pack according to claim 2, characterized in that: When the rechargeable battery is installed in the battery compartment, the rechargeable battery is flush with the opening end of the battery compartment.

4. The battery pack according to claim 2, characterized in that: The rechargeable battery comprises a battery housing and a battery pack, wherein the battery pack is disposed in the battery housing and is electrically connected to the first power terminal; The battery housing comprises a battery cover and a battery hood, wherein the battery cover is a shell structure with one end open, and the battery is contained in the battery cover; the battery cover comprises a cover plate and a cover plate base, wherein the cover plate base is fixedly connected to the open end of the battery cover, and the cover plate is fixed on the cover plate base; The notch is opened on the outer surface of the cover plate, and an installation space for installing the return spring and the lock is formed between the cover plate and the cover plate base. The installation space is connected to the notch, and the unlocking pressing part of the lock extends from the installation space into the notch.

5. The battery pack according to claim 4, characterized in that: The battery cover is also provided with a power display button and a power indicator light, and the installation space between the cover plate and the cover plate base is also provided with a power display board, and the battery pack is electrically connected to the power display button and the power indicator light respectively through the power display board.

6. The battery pack according to claim 1, characterized in that: An electrical connection installation notch for installing the charging conversion head is provided at one end of one side of the rechargeable battery, and the first power terminal and the trigger boss are both arranged on the end surface of the electrical connection installation notch.

7. The battery pack according to claim 6, characterized in that: A mounting protrusion adapted to the electrical connection mounting notch is provided at the bottom of the battery compartment, and a third electrical terminal detachably electrically connected to the first electrical terminal is provided on the mounting protrusion.

8. The battery pack according to claim 1, characterized in that: A trigger device is also provided in the trigger hole. The trigger device is movably arranged in the trigger hole. The trigger boss triggers the trigger switch to close by pushing the trigger device.

9. The battery pack according to claim 8, characterized in that: The trigger device is movably connected to the elastic pressing portion of the trigger switch.

10. The battery pack according to claim 1, characterized in that: The second power connection terminal, the charging terminal and the trigger hole are located on the same end surface of the charging conversion head, and the charging terminal is located on the other end surface of the charging conversion head.

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