A battery pack structure

Abstract

This invention discloses a battery pack structure in the field of energy storage batteries. It includes a base support, a central support frame, an upper pressure frame, and batteries. By providing a sleeve at the upper end of each side arm of the multi-arm lower base plate, batteries can be individually inserted into the sleeve, with gaps between each battery. Compared to traditional integrated battery packs, this structure effectively avoids heat accumulation and facilitates heat dissipation. The upper pressure frame is detachably connected to the central support frame on the multi-arm lower base plate. After the battery is inserted into the sleeve, the upper pressure frame presses down on the battery, firmly securing it between the upper pressure frame and the multi-arm lower base plate. This provides good battery fixation and facilitates installation. Compared to traditional integrated battery packs, in case of a single battery failure, the entire pack does not need to be disassembled, making operation more convenient and effectively reducing maintenance costs.

Description

Technical Field

[0001] This invention relates to the field of energy storage batteries, and more particularly to a battery pack structure. Background Technology

[0002] In fields such as new energy storage and electric vehicles (such as electric balance vehicles), the battery pack is the core component for energy storage and supply, and its structural design directly affects the battery's safety, electrical connection reliability, and maintenance convenience.

[0003] Patent CN212810460U discloses a battery pack structure for a self-balancing scooter, including a cover and a battery pack body. The cover is located at the upper end of the battery pack body, and a charging port protection component is located at the middle of the upper surface of the cover. The charging port protection component includes a protective cover, a damping groove, and a protective sleeve. The protective sleeve is located at the middle of the upper surface of the cover, the damping groove is located inside the protective sleeve, and the protective cover is located inside the damping groove. This utility model improves the service life of the charging port by setting up a charging port protection component, prevents foreign objects from entering, prevents water from leaking into the battery pack and causing short circuits, improves safety, ensures working efficiency, and improves discharge stability. By setting up a limiting and fixing component, it prevents the battery pack from slipping during use, ensuring working stability, improving the quality of use, and improving disassembly and assembly efficiency.

[0004] The aforementioned patent only improves the outer casing; the battery pack itself uses a common integrated encapsulation structure. However, traditional battery packs have the following shortcomings: 1. Inadequate battery heat dissipation structure: the battery pack is fixed with plastic encapsulation, resulting in small gaps between individual batteries, which easily leads to heat generation. Heat accumulation can cause performance degradation. 2. Inconvenient maintenance: traditional battery packs are mostly integrated encapsulations; when a single battery fails, the entire pack needs to be disassembled, which is cumbersome and costly to maintain. Therefore, there is an urgent need for a battery pack structure with good heat dissipation and convenient maintenance. Summary of the Invention

[0005] The purpose of this invention is to provide a battery pack structure that solves the following problems in the prior art: 1. The battery heat dissipation structure is not perfect. The battery pack is fixed with plastic covering, and the gap between each battery is small, which easily leads to heat generation. Heat accumulation can easily lead to performance degradation; 2. Maintenance is inconvenient. Traditional battery packs are mostly integrated packages. When a single battery fails, the entire pack needs to be disassembled, which is cumbersome and has high maintenance costs.

[0006] To achieve this objective, the present invention adopts the following technical solution: A battery pack structure, comprising: The base support includes a multi-arm lower base plate and a sleeve fixedly disposed on the upper end of each side arm of the multi-arm lower base plate. A lower electrode piece is disposed on the upper end surface of the multi-arm lower base plate. The central support frame includes a tube seat for connecting to the lower base plate of the multi-sided arm and a clamping member disposed on the outside of the tube seat. An inner partition tube is also disposed inside the tube seat. The upper pressure frame is detachably connected to the central support frame, and an upper electrode piece is provided at the upper end of the upper pressure frame. The battery is inserted into the sleeve of the base, and the upper end of the upper pressure frame presses the upper end of the battery.

[0007] In one specific implementation, the multi-sided arm lower base plate includes: Central circular plate; Support arm, which is fixedly mounted on the side of the central circular plate; A tray, which is fixedly mounted at the other end of the support arm, is used to support the lower end of the battery. A connecting plate is fixedly disposed between the support arms, and screws are provided on the connecting plate.

[0008] In one specific implementation, the sleeve includes: A clearance opening is provided on the sleeve to allow clearance for the abutting end of the abutting member. The length of the clearance opening is the same as the length of the sleeve. The sleeve is also provided with a heat dissipation port, and the lower end of the sleeve is fixedly connected to the support plate.

[0009] In one specific implementation, the lower electrode includes: The first contact end is a copper sheet and is disposed on the upper end surface of the bottom plate of the multi-sided arm. A first insulating shell is fitted over the outside of the first contact end; A copper tube is connected to the first contact end and is located in the middle of the bottom plate of the multi-sided arm. The circular electrode end of the first contact end is located on the support plate. The connecting piece end of the first contact end is located on the support arm and connected to the lower end of the copper tube. The lower end of the clearance port makes way for the connecting piece end of the first contact end. The first insulated wire is fixedly installed at the upper end of the copper tube and passes through the upper end of the upper pressure frame.

[0010] In one specific implementation, the central circular plate of the multi-sided arm lower base plate further includes: The guide post has its lower end fixedly mounted on the central circular plate, and its upper end has a threaded hole. A first reset spring is mounted on the guide post, and the lower end of the first reset spring is fixedly mounted on the central circular plate.

[0011] In one specific implementation, the pipe seat includes: The tube body has an inner diameter that matches the outer diameter of the copper tube, and the tube body is a component made of plastic material; A lower notch is provided at the lower end of the tube body to allow space for the connecting piece end of the first contact end. Mounting feet are fixedly disposed at the lower end of the tube body and are used to connect to the central circular plate by screws.

[0012] In one specific implementation, the clamping element includes: A slot block is fixedly disposed in the middle of the outer side of the tube body. The slot block has a through opening and a positioning groove on its side. Insert plate, which is inserted through the slot of the slot block; A rubber stop block is fixedly disposed at one end of the insert plate; Positioning side blocks are fixedly disposed on both sides of the insert plate and are movably positioned within the positioning groove. The second return spring is disposed in the positioning channel, with one end connected to the positioning side block and the other end connected to the positioning channel.

[0013] In one specific implementation, the inner partition pipe includes: Ring cover; The inner tube is fixedly disposed on the lower end face of the ring cap, and the ring cap is fixedly disposed on the upper end of the tube body. The inner tube is inserted into the tube body, and the outer diameter of the inner tube matches the inner diameter of the copper tube. The inner diameter of the inner tube is larger than the diameter of the guide post.

[0014] In one specific implementation, the upper pressure frame includes: A capping frame, which is configured the same as the lower base plate of the multi-sided arm, and the upper electrode piece is disposed on the lower end of the capping frame; A positioning sleeve is fixedly installed on the lower end face of the pressure cap frame. The positioning sleeve is inserted into the inner tube body and sleeved on the guide post. The outer diameter of the positioning sleeve matches the inner diameter of the inner tube body, and the inner diameter of the positioning sleeve matches the diameter of the guide post. An insert plate is fixedly disposed on the lower end surface of the cover frame, and the lower end of the insert plate has a beveled structure for inserting into the through hole to push the insert plate. A locking bolt is provided on the upper end of the pressure plate frame and is threadedly connected to the threaded hole on the upper end of the guide post.

[0015] In one specific implementation, the upper electrode includes: The second contact terminal is a copper sheet; The second insulating shell is sleeved on the outside of the second contact end; The second insulated wire is connected to the connecting piece end of the second contact end and extends through the upper end face of the cover frame.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting a sleeve at the upper end of each side arm of the multi-arm lower base plate and setting a lower electrode piece on the upper end face of the multi-arm lower base plate, the battery can be inserted into the sleeve individually. There is a gap between each battery. Compared with the traditional integrated packaging structure of battery pack, this battery pack structure can effectively avoid heat accumulation and facilitate heat dissipation. At the same time, the upper pressure frame is detachably connected and installed on the central support frame set on the multi-arm lower base plate. After the battery is inserted into the sleeve, the upper pressure frame presses down on the battery to press and fix the battery between the upper pressure frame and the multi-arm lower base plate. The battery fixation effect is good and it is convenient to install and fix.

[0017] 2. The battery is inserted separately into the sleeve set in the lower base plate of the multi-arm, and the upper pressure frame is detachably connected to the central support frame set in the lower base plate of the multi-arm. When the battery needs maintenance, the battery to be replaced can be taken out by disassembling the upper pressure frame. Compared with the traditional integrated packaging structure of battery pack, it is not necessary to disassemble the entire pack when a single battery fails, making the operation more convenient and effectively reducing maintenance costs.

[0018] 3. By setting a clamping member on the outside of the tube seat and setting an insert plate at the lower end of the cover frame of the upper pressure frame, when the upper pressure frame is installed on the central support frame, the inclined structure at the lower end of the insert plate pushes the insert plate set by the clamping member, so that the rubber block at the other end of the insert plate can push and lock the side of the battery inserted in the sleeve through the clearance opening of the sleeve, so that the battery can be placed more stably in the sleeve. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall disassembled structure of the present invention; Figure 3 This is a schematic diagram of the structure of the base support and the central support frame of the present invention; Figure 4 This is a top view of the base support and central support frame of the present invention; Figure 5 This is a schematic diagram of the multi-sided arm lower base plate, lower electrode plate and central support frame of the present invention; Figure 6 This is a schematic diagram of the internal structure of the tube body of the present invention; Figure 7 This is a schematic diagram of the central support frame structure of the present invention; Figure 8 for Figure 5 Enlarged view of point A in the middle; Figure 9 This is a first-view structural schematic diagram of the upper pressure frame of the present invention; Figure 10 This is a second-view structural schematic diagram of the upper pressure frame of the present invention.

[0022] Illustration: 100. Base support; 110. Multi-sided arm lower base plate; 111. Central circular plate; 112. Support arm; 113. Support plate; 114. Connecting plate; 120. Sleeve; 121. Relief opening; 130. Lower electrode plate; 131. First contact end; 132. First insulating shell; 133. Copper tube; 134. First insulated wire; 140. Guide post; 141. Threaded hole; 150. First return spring; 200. Central support frame; 210. Pipe seat; 211. Pipe body; 212. Lower notch; 213. Mounting foot; 220. Clamping element; 221. Slot block; 201. With through opening; 202. Positioning channel; 222. Insert plate; 223. Rubber abutment; 224. Positioning side block; 225. Second return spring; 230. Inner partition pipe; 231. Ring cover; 232. Inner pipe body; 300. Upper pressure frame; 310. Pressure cover frame; 320. Positioning sleeve; 330. Insertion plate; 340. Locking bolt; 350. Upper electrode piece; 351. Second contact end; 352. Second insulating shell; 353. Second insulating wire; 400, battery. Detailed Implementation

[0023] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0024] In the description of this invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component positioned centrally in the connection.

[0025] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] Reference Figure 1-10 As shown, an embodiment of the present invention provides a battery pack structure, including: The base support 100 includes a multi-arm lower base plate 110 and a sleeve 120 fixedly disposed on the upper end of each arm of the multi-arm lower base plate 110. A lower electrode piece 130 is disposed on the upper end surface of the multi-arm lower base plate 110. The central support frame 200 includes a tube seat 210 for connecting to the lower base plate 110 of the multi-sided arm and a clamping member 220 disposed on the outside of the tube seat 210. An inner partition tube 230 is also disposed inside the tube seat 210. The upper pressure frame 300 is detachably connected to the central support frame 200, and the upper end of the upper pressure frame 300 is provided with an upper electrode plate 350. The battery 400 is inserted into the sleeve 120 of the base 100, and the upper end of the upper pressure bracket 300 presses the upper end of the battery 400.

[0027] In this design, by providing a sleeve 120 at the upper end of each side arm of the multi-arm lower base plate 110 and a lower electrode 130 on the upper surface of the multi-arm lower base plate 110, the battery 400 can be individually inserted into the sleeve 120, with gaps between each battery 400. Compared with the traditional integrated packaging structure of the battery pack, this battery pack structure can effectively avoid heat accumulation and facilitate heat dissipation.

[0028] Meanwhile, the upper pressure frame 300 is detachably connected to the central support frame 200 set on the lower base plate 110 of the multi-arm. After the battery 400 is inserted into the sleeve 120, the upper pressure frame 300 presses down on the battery 400, pressing and fixing the battery 400 between the upper pressure frame 300 and the lower base plate 110 of the multi-arm. This provides a good fixing effect for the battery 400 and facilitates installation and fixing.

[0029] When battery maintenance is required, the battery to be replaced can be removed by disassembling the upper pressure frame 300. Compared with the traditional integrated battery pack structure, when a single battery fails, it is not necessary to disassemble the entire pack, making the operation more convenient and effectively reducing maintenance costs.

[0030] In some embodiments of the present invention, reference is made to... Figure 5-6 As shown, the multi-arm lower base plate 110 includes: Central circular plate 111; Support arm 112 is fixedly installed on the side of the central circular plate 111. In the embodiment shown in the figure, eight sets of support arms 112 are provided on the side of the central circular plate 111. The tray 113 is fixedly installed at the other end of the support arm 112 and is used to support the lower end of the battery 400. A connecting plate 114 is fixedly installed between the support arms 112, and screws are provided on the connecting plate 114.

[0031] In some embodiments of the present invention, reference is made to... Figure 3 , Figure 5-7 As shown, the sleeve 120 includes: The clearance opening 121 is provided on the sleeve 120 to allow clearance for the abutting end of the abutting member 220. The length of the clearance opening 121 is the same as the length of the sleeve 120. The sleeve 120 is also provided with a heat dissipation port, and the lower end of the sleeve 120 is fixedly connected to the support plate 113.

[0032] In some embodiments of the present invention, reference is made to... Figure 5-6 As shown, the lower electrode 130 includes: The first contact end 131 is a copper sheet and is disposed on the upper end surface of the multi-sided arm lower base plate 110. The first insulating shell 132 is sleeved on the outside of the first contact end 131; Copper tube 133 is connected to the first contact end 131 and is located in the middle of the bottom plate 110 of the multi-sided arm. The circular electrode end of the first contact end 131 is located on the support plate 113. The connecting piece end of the first contact end 131 is located on the support arm 112 and connected to the lower end of the copper tube 133. The lower end of the clearance port 121 makes way for the connecting piece end of the first contact end 131. The first insulated wire 134 is fixedly installed at the upper end of the copper tube 133 and passes through the upper end of the upper pressure frame 300.

[0033] In some embodiments of the present invention, reference is made to... Figure 5-6 As shown, the central circular plate 111 of the multi-sided arm lower base plate 110 also includes: The guide post 140 has its lower end fixedly mounted on the central circular plate 111, and its upper end has a threaded hole 141. The first reset spring 150 is mounted on the guide post 140, and the lower end of the first reset spring 150 is fixedly mounted on the central circular plate 111.

[0034] In some embodiments of the present invention, reference is made to... Figure 5-8 As shown, the pipe seat 210 includes: The inner diameter of the tube body 211 matches the outer diameter of the copper tube 133. The tube body 211 is a component made of plastic material. The lower notch 212 is formed at the lower end of the tube body 211 to make way for the connecting piece end of the first contact end 131; Mounting foot 213 is fixedly installed at the lower end of tube body 211 and is used to connect to the central circular plate 111 by screws.

[0035] In some embodiments of the present invention, reference is made to... Figure 5 , Figure 7-8 As shown, the clamping member 220 includes: The slot block 221 is fixedly installed in the middle of the outer side of the tube body 211. The slot block 221 has a through opening 201 and a positioning groove 202 on its side. Insert plate 222 is inserted through the slot of slot block 221; Rubber stop 223 is fixedly installed at one end of insert plate 222; Positioning side block 224 is fixedly disposed on both sides of the insert plate 222, and the positioning side block 224 is movably positioned in the positioning groove 202. The second reset spring 225 is disposed in the positioning channel 202, with one end connected to the positioning side block 224 and the other end connected in the positioning channel 202.

[0036] The positioning side block 224 and the positioning channel 202 cooperate to position the movement of the insert plate 222. At the same time, when the insert plate 222 is pushed out into the slot of the slot block 221, the second return spring 225 is stretched. When the insert plate 222 is no longer pushed by external force, the second return spring 225 can drive the insert plate 222 to reset.

[0037] In some embodiments of the present invention, reference is made to... Figure 7 As shown, the inner partition fitting 230 includes: Ring cover 231; The inner tube 232 is fixedly installed on the lower end face of the ring cover 231, which is fixedly installed on the upper end of the tube body 211. The inner tube 232 is inserted into the tube body 211. The outer diameter of the inner tube 232 matches the inner diameter of the copper tube 133. The inner diameter of the inner tube 232 is larger than the diameter of the guide post 140.

[0038] The inner partition pipe 230 allows the copper pipe 133 to be sandwiched between the inner pipe body 232 and the pipe body 211, thus protecting the copper pipe 133.

[0039] In some embodiments of the present invention, reference is made to... Figure 9-10 As shown, the upper pressure frame 300 includes: The pressure cap frame 310 is configured the same as the lower base plate 110 of the multi-sided arm, and the upper electrode piece 350 is disposed on the lower end of the pressure cap frame 310. The positioning sleeve 320 is fixedly installed on the lower end face of the pressure plate frame 310. The positioning sleeve 320 is inserted into the inner tube body 232 and sleeved on the guide post 140. The outer diameter of the positioning sleeve 320 matches the inner diameter of the inner tube body 232, and the inner diameter of the positioning sleeve 320 matches the diameter of the guide post 140. When the upper pressure frame 300 is connected and installed with the central support frame 200, the positioning sleeve 320 is inserted into the inner tube 232, and the guide post 140 is inserted into the positioning sleeve 320, which can achieve good positioning connection.

[0040] The insert plate 330 is fixedly disposed on the lower end surface of the cover frame 310, and the lower end of the insert plate 330 is a beveled structure, which is used to insert into the through hole 201 to push the insert plate 222. Locking bolt 340 is located on the upper end of the pressure plate bracket 310 and is threadedly connected to the threaded hole 141 on the upper end of the guide post 140.

[0041] When the positioning sleeve 320 is inserted into the inner tube 232, it can press down the first return spring 150. When the upper pressure frame 300 is removed from the central support frame 200, by unscrewing the locking bolt 340, the positioning sleeve 320 is pushed up under the action of the first return spring 150, so that the positioning sleeve 320 is pushed out from the inner tube 232, and the upper electrode 350 can be quickly disconnected from the upper end of the battery 400.

[0042] Specifically, by providing a clamping member 220 on the outside of the tube seat 210 and a stop plate 330 at the lower end of the cover frame 310 of the upper pressure frame 300, when the upper pressure frame 300 is installed on the central support frame 200, the inclined structure at the lower end of the stop plate 330 pushes the insert plate 222 provided by the clamping member 220, so that the rubber block 223 at the other end of the insert plate 222 can push and lock the side of the battery 400 inserted in the sleeve 120 through the clearance opening 121 opened in the sleeve 120. The battery 400 can be placed more stably in the sleeve 120 by the inclined structure at the lower end of the stop plate 330 supporting the insert plate 222.

[0043] In some embodiments of the present invention, reference is made to... Figure 10 As shown, the upper electrode 350 includes: The second contact terminal 351 is a copper sheet; The second insulating shell 352 is sleeved on the outside of the second contact end 351; The second insulated wire 353 is connected to the connecting piece end of the second contact end 351 and extends through the upper end face of the cover frame 310.

[0044] When installing and using this battery pack structure, the battery 400 is inserted into the sleeve 120 provided at the upper end of each side arm of the multi-arm lower base plate 110, and then the upper pressure frame 300 is connected and installed with the central support frame 200. During installation, the positioning sleeve 320 is inserted into the inner tube 232, and the guide post 140 is inserted into the positioning sleeve 320. The second contact end 351 provided at the lower end face of the cover frame 310 is aligned with the terminal head at the upper end of the battery 400. By tightening the locking bolt 340, the locking bolt 340 is threadedly connected to the threaded hole 141 at the upper end of the guide post 140, thus fixing the cover frame 310 to the upper end of the tube 211.

[0045] When the upper pressure frame 300 is connected and installed with the central support frame 200, the inclined structure of the abutment plate 330 provided on the lower end face of the pressure cover 310 is inserted into the through hole 201 opened at the upper end of the slot block 221, and the inclined structure contacts the insert plate 222 and pushes the insert plate 222, so that the insert plate 222 is pushed out from the slot of the slot block 221, and the rubber abutment 223 at the other end of the insert plate 222 can push and lock the side of the battery 400 inserted in the sleeve 120 through the clearance hole 121 opened in the sleeve 120 [1]. When the upper pressure frame 300 is removed from the central support frame 200, the abutment plate 330 is pulled out from the through hole 201 of the slot block 221 and no longer pushes the insert plate 222. The positioning side block 224 provided on the side of the insert plate 222 cooperates with the second return spring 225 to allow the insert plate 222 to return to its original position. The rubber block 223 no longer pushes against the side of the battery 400.

[0046] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A battery pack structure, characterized in that, include: The base support (100) includes a multi-arm lower base plate (110) and a sleeve (120) fixedly disposed on the upper end of each arm of the multi-arm lower base plate (110). The upper end surface of the multi-arm lower base plate (110) is provided with a lower electrode piece (130). The central support frame (200) includes a tube seat (210) for connecting to the lower base plate (110) of the multi-side arm and a clamping member (220) disposed on the outside of the tube seat (210). An inner partition tube (230) is also disposed inside the tube seat (210). The upper pressure frame (300) is detachably connected to the central support frame (200), and the upper end of the upper pressure frame (300) is provided with an upper electrode plate (350). The battery (400) is inserted into the sleeve (120) of the bottom support (100), and the upper end of the upper pressure bracket (300) presses the upper end of the battery (400). The multi-sided arm lower base plate (110) includes: Central circular plate (111); Support arm (112), the support arm (112) is fixedly disposed on the side of the central circular plate (111); A tray (113) is fixedly disposed at the other end of the support arm (112) for supporting the lower end of the battery (400); A connecting plate (114) is fixedly disposed between the support arms (112), and screws are provided on the connecting plate (114); The sleeve (120) includes: A clearance opening (121) is provided on the sleeve (120) to allow clearance for the abutting end of the abutting member (220). The length of the clearance opening (121) is the same as the length of the sleeve (120). The sleeve (120) is also provided with a heat dissipation port, and the lower end of the sleeve (120) is fixedly connected to the support plate (113); The lower electrode (130) includes: The first contact end (131) is a copper sheet and is disposed on the upper end surface of the lower base plate (110) of the multi-sided arm. The first insulating shell (132) is sleeved on the outside of the first contact end (131); A copper tube (133) is connected to the first contact end (131) and is located in the middle of the bottom plate (110) of the multi-sided arm. The circular electrode end of the first contact end (131) is located on the support plate (113). The connecting piece end of the first contact end (131) is located on the support arm (112) and connected to the lower end of the copper tube (133). The lower end of the clearance port (121) makes way for the connecting piece end of the first contact end (131). The first insulated wire (134) is fixedly disposed at the upper end of the copper tube (133) and passes through the upper end of the upper pressure frame (300); The upper pressure frame (300) includes a pressure cover frame (310), which is configured the same as the lower base plate (110) of the multi-sided arm, and the upper electrode piece (350) is disposed on the lower end of the pressure cover frame (310); The upper electrode (350) includes: The second contact end (351) is a copper sheet; The second insulating shell (352) is sleeved on the outside of the second contact end (351); The second insulated wire (353) is connected to the connecting piece end of the second contact end (351) and extends through the upper end face of the cover frame (310).

2. The battery pack structure according to claim 1, characterized in that, The central circular plate (111) of the multi-sided arm lower base plate (110) also includes: The guide post (140) has its lower end fixedly mounted on the central circular plate (111), and its upper end has a threaded hole (141). The first reset spring (150) is mounted on the guide post (140), and the lower end of the first reset spring (150) is fixedly mounted on the central circular plate (111).

3. The battery pack structure according to claim 2, characterized in that, The tube seat (210) includes: The inner diameter of the tube (211) matches the outer diameter of the copper tube (133), and the tube (211) is a component made of plastic material; The lower notch (212) is formed at the lower end of the tube body (211) to make way for the connecting piece end of the first contact end (131); Mounting foot (213) is fixedly disposed at the lower end of the tube body (211) and is used to connect to the central circular plate (111) by screws.

4. The battery pack structure according to claim 3, characterized in that, The clamping element (220) includes: The slot block (221) is fixedly disposed in the middle of the outer side of the tube body (211). The slot block (221) has a through opening (201) and a positioning groove (202) is provided on the side of the slot block (221). Insert plate (222), which is inserted through the slot of the slot block (221); A rubber stop block (223) is fixedly disposed at one end of the insert plate (222); Positioning side block (224), the positioning side block (224) is fixedly disposed on both sides of the insert plate (222), and the positioning side block (224) is movably positioned in the positioning channel (202); The second reset spring (225) is disposed in the positioning channel (202), with one end connected to the positioning side block (224) and the other end connected to the positioning channel (202).

5. The battery pack structure according to claim 4, characterized in that, The inner partition fitting (230) includes: Ring cap (231); The inner tube (232) is fixedly disposed on the lower end face of the ring cover (231), the ring cover (231) is fixedly disposed on the upper end of the tube body (211), the inner tube (232) is inserted into the tube body (211), the outer diameter of the inner tube (232) matches the inner diameter of the copper tube (133), and the inner diameter of the inner tube (232) is larger than the diameter of the guide post (140).

6. The battery pack structure according to claim 5, characterized in that, The upper pressure frame (300) also includes: A positioning sleeve (320) is fixedly disposed on the lower end face of the pressure cap frame (310). The positioning sleeve (320) is inserted into the inner tube body (232) and sleeved on the guide post (140). The outer diameter of the positioning sleeve (320) matches the inner diameter of the inner tube body (232), and the inner diameter of the positioning sleeve (320) matches the diameter of the guide post (140). An insert plate (330) is fixedly disposed on the lower end surface of the cover frame (310), and the lower end of the insert plate (330) is a bevel structure, which is used to insert into the through hole (201) to push the insert plate (222); Locking bolt (340) is located on the upper end of the pressure plate frame (310) and is threadedly connected to the threaded hole (141) on the upper end of the guide post (140).

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