A battery pack with a quick-release structure

Abstract

The present invention relates to the technical field of battery packs. The battery pack has a quick-release structure, including a bottom shell, a pack cover fixedly installed on the left side of the bottom shell, a snap-in hole opened on the top of the pack cover, a quick-release snap-in mechanism for quick installation and removal fixed inside the snap-in hole, a circuit board assembly provided in the middle of the bottom shell, a battery assembly provided on the circuit board assembly, the present invention cooperates with the use of a forced heat dissipation mechanism and a quick-release snap-in mechanism. When the battery pack is pulled out of the power tool, the suction fan blades start to rotate at high speed under the drive of the rack in the quick-release snap-in mechanism and the transmission speed increase of the gear set in the forced heat dissipation mechanism, and the heat inside the battery pack is sucked to the outside, thereby realizing forced heat dissipation. In the suction process, in conjunction with the filtering of the filter, suction and dust removal inside the battery pack are realized at the same time. By installing the quick-release snap-in mechanism, the battery pack can be quickly installed and removed from the power tool.

Description

Technical Field

[0001] The present invention belongs to the technical field of battery packs, and particularly relates to a battery pack with a quick-release structure. Background Art

[0002] A battery pack generally refers to a package containing multiple battery cells combined together to provide higher voltage or capacity. They are widely used in various electronic devices, electric vehicles, energy storage systems and other fields. The battery pack used in general power tools is called a tool battery pack. Tool battery packs include a housing, management system, battery cells and connectors. Tool battery packs are compact, portable and quick to install and remove. However, existing tool battery packs have the following problems when used:

[0003] 1. Existing tool battery packs are fixed to power tools using snaps to achieve quick installation and removal of the tool battery pack. A lock tongue for snap-fitting and a button for pressing to unlock are usually installed on the battery pack shell, resulting in an uneven surface of the battery pack, which is inconvenient to carry. The unlocking button of the existing battery pack is usually pressed downward, which is prone to accidental touch when it is hit or squeezed, causing the battery pack to fall off.

[0004] 2. There is usually no buffer structure between the battery cells and the outer shell in existing tool battery packs. When the tool battery pack accidentally falls or is impacted by a collision, the wire welding points on the battery cells are easy to fall off, causing damage to the battery. The two poles of the battery cell usually need to be bonded with insulating sheets, and the insulating sheets are usually bonded and fixed to the outside of the pole pieces. Battery heating and vibration during use may cause the insulating sheets to fall off, thereby posing a safety hazard and shortening the service life of the battery pack.

[0005] 3. Existing battery packs typically have heat dissipation holes on the sides for simple heat dissipation. When the battery pack is used in a power tool and needs to be replaced due to low power, the cells in the pack generate a large amount of heat. Natural cooling is inefficient for heat dissipation. Furthermore, dust accumulates inside the battery pack over long periods of use. Failure to remove dust will shorten the lifespan of the device. Summary of the Invention

[0006] The purpose of the present invention is to provide a battery pack with a quick-release structure that is simple in structure and reasonably designed in order to solve the above problems.

[0007] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0008] A battery pack with a quick-release structure includes a bottom shell, a pack cover fixedly mounted on the left side of the bottom shell, a snap-in hole formed on the top of the pack cover, a quick-release snap-in mechanism for quick installation and removal fixed inside the snap-in hole, a circuit board assembly disposed in the middle of the bottom shell, a battery assembly disposed on the circuit board assembly, and a forced heat dissipation mechanism for rapid heat dissipation disposed on the top of the bottom shell.

[0009] The forced heat dissipation mechanism includes a plurality of heat dissipation holes evenly arranged on the top of the bottom shell, and two suction assemblies are symmetrically arranged on the top surface of the bottom shell. The suction assembly includes a mounting shaft rotatably mounted on the top surface of the bottom shell, a plurality of suction fan blades are fixedly mounted on the middle part of the mounting shaft, a No. 3 spur gear is fixedly sleeved on the bottom of the mounting shaft, an L-shaped plate is fixedly connected to the top surface of the bottom shell, a connecting shaft is rotatably passed through the horizontal section of the L-shaped plate, a No. 2 spur gear meshing with the No. 3 spur gear is fixedly sleeved on the top of the connecting shaft, a driven spur gear is fixedly sleeved on the bottom of the connecting shaft, and side plates are fixedly mounted on the four corners of the top surface of the bottom shell respectively. The four side plates are grouped in twos, and a connecting rod is rotatably mounted between the two side plates in the same group. A driving bevel gear meshing with the driven spur gear is fixedly sleeved on the middle part of the connecting rod, and a No. 1 spur gear is fixedly sleeved on both ends of the connecting rod.

[0010] Preferably, the bottom shell includes an arc section and a vertical section, and a number of buffer guide columns are evenly fixedly installed on the inner wall of the arc section of the bottom shell, and two inclined grooves are provided on the top and bottom of the buffer guide columns. A card block is fixedly installed on the two vertical inner walls of the bottom shell, and a card slot is provided on the card block. A number of heat dissipation fins corresponding to the buffer guide columns are evenly fixedly passed through the arc section of the bottom shell, and one end of the heat dissipation fin is fixed through the bottom shell and inserted into the inside of the buffer guide column.

[0011] Preferably, a plurality of air inlets are evenly arranged on the bottom of the bottom shell, two communication holes are arranged at the front and rear of the top of the bottom shell, and a filter is detachably installed on the bottom surface of the bottom shell.

[0012] Preferably, a plurality of heat dissipation openings are evenly arranged on the package cover, and a buckle fixedly mounted on the package cover and engaged with the card slot.

[0013] Preferably, the circuit board assembly includes a control board fixedly mounted inside the bottom shell, a charging port fixedly mounted on the middle of the left side of the control board, a power button fixedly mounted on the bottom of the left side of the control board, a button seat provided on the power button, the button seat movably passes through the bottom of the package cover, two limit blocks fixedly mounted on the front and rear of the right side of the control board, an arc-shaped limit groove is provided on the side of the two limit blocks away from the control board, and both limit blocks are provided with guide grooves on the upper and lower sides.

[0014] Preferably, the battery assembly includes a positive electrode plate fixedly connected to the bottom of the control board, a positive electrode insulating sheet is attached to the top of the positive electrode plate, a fixed sleeve is attached to the top of the positive electrode insulating sheet, a battery cell is movably sleeved on the top of the fixed sleeve, an avoidance hole is opened at the bottom of the fixed sleeve, and the top of the positive electrode plate passes through the avoidance hole and is welded and fixed to the positive electrode of the battery cell.

[0015] Preferably, the top of the battery cell is welded and fixed to the negative electrode sheet, the negative electrode sheet is welded and fixed to the top of the control board, a negative electrode insulating sheet is attached to the top of the negative electrode sheet, two discharge electrode sheets are fixedly connected to the front and back of the top of the control board, the bottoms of the two discharge electrode sheets are attached to the top of the negative electrode insulating sheet, a temperature electrode is fixedly connected to the middle of the top of the control board, the bottom of the temperature electrode is attached to the top of the negative electrode insulating sheet, a pressure plate is fixedly installed on the top of the cover, and the bottom of the pressure plate is attached to the top of the temperature electrode.

[0016] Preferably, the quick-release clamping mechanism includes a bracket and a No. 2 plug-in pole piece. There are two No. 2 plug-in pole pieces. The two No. 2 plug-in pole pieces are fixedly installed on the bracket in the front and rear. The bottom of the No. 2 plug-in pole piece is movably inserted into the discharge pole piece, and racks meshing with the No. 1 spur gear are fixedly installed on the left and right sides of the two No. 2 plug-in pole pieces. A No. 1 plug-in pole piece in contact with the temperature pole piece is fixedly installed on the right side of the bracket.

[0017] Preferably, a fixing plate is fixedly installed on the left side of the top of the bracket, a spring is fixedly installed on the fixing plate, and a fixing cylinder is fixedly installed on the end of the spring away from the fixing plate.

[0018] Preferably, a lock is fixed to the end of the fixing tube away from the spring, a rotating shaft is rotated through the middle of the lock, the rotating shaft is fixedly installed inside the power tool, the bottom of the lock is clamped inside the clamping hole, and a push button is attached to the top of the lock, and the push button is installed inside the power tool for sliding up and down.

[0019] The beneficial effects of the present invention are:

[0020] 1. The present invention uses a forced heat dissipation mechanism and a quick-release clamping mechanism in conjunction. When the battery pack is pulled out of the power tool, the suction fan blades start to rotate at high speed under the drive of the rack in the quick-release clamping mechanism and the transmission speed increase of the gear set in the forced heat dissipation mechanism, and absorb the heat inside the battery pack to the outside, thereby achieving forced heat dissipation with good heat dissipation effect. In addition, during the suction process, the filter screen is used to filter and simultaneously achieve suction and dust removal inside the battery pack, thereby extending the service life of the battery pack.

[0021] 2. The present invention realizes the rapid installation and removal of the battery pack from the power tool through the installation of the quick-release clamping mechanism. Compared with the traditional quick-release structure, the present structure can be operated with one hand. The battery pack can be unlocked by pushing the push button upwards, so that the battery pack falls out of the power tool by itself under the action of its own gravity, which is easy to operate.

[0022] 3. The present invention provides a buffer guide column and a limit block, both of which are made of thermally conductive silicone and have elasticity and thermal conductivity. With the cooperation of the buffer guide column and the limit block, the buffer protection of the battery cell is guaranteed, the suspended installation of the battery cell is realized, and there is no direct contact with the outer shell, thereby avoiding the damage of the battery cell caused by collision. At the same time, an inclined groove is provided on the buffer guide column and a guide groove is provided on the limit block, so that the buffer guide column and the limit block are designed with large openings at both ends and a small opening in the middle, forming a narrow tube effect, thereby forcing the heat dissipation mechanism to absorb heat, increasing the air flow rate and improving the heat dissipation effect. Heat dissipation fins are inserted in the buffer guide column to conduct the heat on the battery cell to the outside for rapid heat dissipation.

[0023] 4. The present invention is provided with two discharge electrodes and one temperature electrode, which ensures the stability and reliability of the battery pack under large discharge current. The two discharge electrodes adopt an elastic structure design and are stably locked with the plug-in electrodes to ensure reliability during discharge. The bottom shell and the package cover are fixed with buckles, which are easy to install and disassemble.

[0024] 5. The positive and negative pole pieces of the battery pack of the present invention are universal, and the positive pole insulating piece is clamped between the positive pole piece and the fixed sleeve, and the negative pole insulating piece is clamped between the negative pole piece and the negative pole piece, thereby ensuring the stable installation of the insulating piece. Compared with the traditional bonding and fixing method, it avoids the occurrence of the insulating piece falling off due to the heating of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0026] Figure 2 This is a three-dimensional diagram of the overall structure after the quick-release clamping mechanism of the present invention is removed;

[0027] Figure 3 It is an exploded view of the overall structure of the present invention;

[0028] Figure 4 The present invention Figure 3 A magnified schematic diagram of area A in the middle;

[0029] Figure 5 is a partially cutaway perspective view of the bottom shell of the present invention;

[0030] Figure 6 The present invention Figure 5 A magnified schematic diagram of area B in the middle;

[0031] Figure 7 This is a three-dimensional diagram of the present invention after the cover is removed;

[0032] Figure 8 is a perspective view of the package cover and circuit board assembly of the present invention after removal;

[0033] Figure 9 This is a three-dimensional diagram of the present invention after the bottom shell is removed;

[0034] Figure 10 It is a three-dimensional diagram of the battery assembly, circuit board assembly, temperature electrode and discharge electrode of the present invention;

[0035] Figure 11 It is an installation schematic diagram of the present invention.

[0036] In the figure: 1. bottom shell; 2. cover; 3. charging port; 4. connecting hole; 5. forced heat dissipation mechanism; 51. heat dissipation hole; 52. suction assembly; 521. L-shaped plate; 522. suction fan blade; 523. mounting shaft; 524. No. 2 spur gear; 525. No. 3 spur gear; 526. driven spur gear; 53. driving bevel gear; 54. connecting rod; 55. No. 1 spur gear; 56. side panel; 6. quick release clamping mechanism; 60. No. 1 plug-in pole piece; 61. push button; 62. lock; 63. fixing cylinder; 64. spring; 65. fixing plate; 66. bracket; 67. rack; 68. No. 2 Plug-in electrode; 69, rotating shaft; 7, battery assembly; 71, positive electrode; 72, positive insulating sheet; 73, fixing sleeve; 74, battery cell; 75, negative electrode; 76, negative insulating sheet; 8, circuit board assembly; 81, control board; 82, button seat; 83, power button; 84, limit block; 85, arc-shaped limit groove; 86, guide groove; 9, temperature electrode; 10, discharge electrode; 11, pressure plate; 12, snap-on hole; 13, heat dissipation vent; 14, buffer guide column; 15, air inlet; 16, slot; 17, block; 18, buckle; 19, filter; 20, heat dissipation fin. DETAILED DESCRIPTION

[0037] The present application is described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0038] Example: See Figure 1 、 Figure 2 and Figure 3 A battery pack with a quick-release structure includes a bottom shell 1, a pack cover 2 is fixedly installed on the left side of the bottom shell 1, a snap-in hole 12 is opened on the top of the pack cover 2, a quick-release snap-in mechanism 6 for quick installation and disassembly is fixed inside the snap-in hole 12, a circuit board assembly 8 is provided in the middle of the bottom shell 1, a battery assembly 7 is provided on the circuit board assembly 8, and a forced heat dissipation mechanism 5 for rapid heat dissipation is provided on the top of the bottom shell 1.

[0039] The quick-release clamping mechanism 6 is installed as a whole inside the power tool. The quick-release clamping mechanism 6 is locked and fixed with the clamping hole 12, so that the battery pack can be quickly installed and disassembled as a whole inside the power tool. The circuit board assembly 8 is used to fix the battery assembly 7 and realize charging and discharging protection. The forced heat dissipation mechanism 5 is used to force the heat to be drawn out when the battery pack is disassembled after it is heated during use, so as to facilitate the rapid heat dissipation of the battery pack.

[0040] See also Figure 1 、 Figure 3 and Figure 5 The bottom shell 1 includes an arc segment and a vertical segment. The inner wall of the arc segment of the bottom shell 1 is evenly fixed with a number of buffer guide columns 14. The buffer guide columns 14 are made of thermally conductive silicone. The thermally conductive silicone itself has elasticity and thermal conductivity, which is convenient for buffering and heat dissipation. The top and bottom of the buffer guide columns 14 are provided with two inclined grooves. The two vertical inner walls of the bottom shell 1 are respectively fixed with two blocks 17 symmetrically installed up and down. Each block 17 has two slots 16 symmetrically opened up and down. The arc segment of the bottom shell 1 is evenly fixed with a number of heat dissipation fins 20 corresponding to the buffer guide columns 14. One end of the heat dissipation fin 20 After being fixed through the bottom shell 1, it is inserted into the buffer guide column 14. The buffer guide column 14 absorbs the heat and transfers it to the heat dissipation fins 20, which transfers it to the outside through the heat dissipation fins 20 for heat exchange and heat dissipation, thereby improving the heat dissipation effect. A number of air inlets 15 are evenly arranged on the bottom of the bottom shell 1, and two connecting holes 4 are symmetrically arranged on the top of the bottom shell 1. A filter 19 is fixedly installed on the bottom surface of the bottom shell 1 by screws, which makes it convenient to remove the filter 19 for cleaning. A number of heat dissipation ports 13 are evenly arranged on the bag cover 2, and a number of clips 18 that are fixed to the card slots 16 are symmetrically fixed on the bag cover 2.

[0041] When in use, the buffer guide column 14 is glued and fixed to the arc section of the inner wall of the bottom shell 1 at equal intervals, and two inclined grooves are provided on the top and bottom of the buffer guide column 14, so that the cavity between the two adjacent buffer guide columns 14 forms a structure with large ends and small middle, forming a narrow tube effect, thereby accelerating the air flow rate and increasing the heat dissipation effect. The positions of the buckle 18 and the slot 16 correspond to each other, which is convenient for the snap connection and fixation between the bottom shell 1 and the cover 2. Compared with the screw installation method, the installation and disassembly are simple. The filter 19 is used to filter the air entering the bottom shell 1, and the heat dissipation port 13 is used for heat dissipation.

[0042] See also Figure 1 、 Figure 3 、 Figure 7 、 Figure 9 and Figure 10The circuit board assembly 8 includes a control board 81 fixedly mounted inside the bottom shell 1. A charging port 3 is fixedly mounted in the middle of the left side of the control board 81. The charging port 3 adopts a TYPE-C charging interface. The charging port 3 runs through the front side of the bottom shell 1 and the cover 2, which is convenient for charging using a TYPE-C cable. A power button 83 is fixedly mounted on the bottom left side of the control board 81. A button seat 82 is provided on the power button 83. The button seat 82 movably runs through the bottom of the cover 2. Two limit blocks 84 are fixedly mounted symmetrically on the right side of the control board 81. An arc-shaped limit groove 85 is opened on the side of the two limit blocks 84 away from the control board 81, and a guide groove 86 is opened symmetrically up and down on both limit blocks 84.

[0043] When in use, first open the arc-shaped limit groove 85 and the guide groove 86 on the limit block 84, and then fix the two limit blocks 84 to the control board 81 by bonding, then fix the power button 83 to the control board 81, and install the button holder 82 to the designated position of the package cover 2. The button holder 82 is used to press the power button 83 to open and close the power button 83.

[0044] See also Figure 3 、 Figure 8 、 Figure 9 and Figure 10 The battery assembly 7 includes a positive electrode sheet 71 fixedly connected to the bottom of the control board 81, a positive electrode insulating sheet 72 is attached to the top of the positive electrode sheet 71, a fixed sleeve 73 is attached to the top of the positive electrode insulating sheet 72, a battery cell 74 is movably sleeved on the top of the fixed sleeve 73, an avoidance hole is opened at the bottom of the fixed sleeve 73, and the top of the positive electrode sheet 71 passes through the avoidance hole and is welded and fixed to the positive electrode of the battery cell 74, the top of the battery cell 74 is welded and fixed to the negative electrode sheet 75, the negative electrode sheet 75 is welded and fixed to the top of the control board 81, and a negative electrode insulating sheet 76 is attached to the top of the negative electrode sheet 75. Two discharge electrode sheets 10 are fixedly connected to the top of the control board 81 symmetrically from front to back, and the bottoms of the two discharge electrode sheets 10 are attached to the top of the negative electrode insulating sheet 76. A temperature electrode 9 is fixedly connected to the middle part of the top of the control board 81, and the bottom of the temperature electrode 9 is attached to the top of the negative electrode insulating sheet 76. A pressing plate 11 is fixedly installed on the top right side of the cover 2, and the bottom of the pressing plate 11 is attached to the top of the temperature electrode 9.

[0045] When in use, first fix the fixing sleeve 73 to the bottom of the battery cell 74 by means of sleeve installation, then use tin soldering to fix the positive electrode piece 71 and the negative electrode piece 75 to the control board 81, and then use bonding to bond the positive electrode insulating sheet 72 to the bottom of the fixing sleeve 73. At this time, the battery cell 74 and the fixing sleeve 73 are installed as a whole between the positive electrode piece 71 and the negative electrode piece 75, and then the positive electrode piece 71 is welded and fixed to the positive pole of the battery cell 74, and the negative electrode piece 75 is welded and fixed to the negative pole of the battery cell 74, and then the negative electrode insulating sheet 76 is bonded to the top of the negative electrode piece 75, and then the discharge electrode piece 10 and the temperature electrode piece 9 are fixed to the control board 81 by tin soldering. When the battery cell 74 is installed, the arc-shaped limit groove 85 is fitted with the outer wall of the battery cell 74, and the arc-shaped limit groove 85 on the limit block 84 is used to limit the battery cell 74. The position is fixed, which ensures the installation stability of the battery cell 74, and a guide groove 86 is opened on the limit block 84, so that a cavity structure with large ends and a small middle is formed between the limit block 84 and the battery cell 74, and a narrow tube effect is formed during suction and heat dissipation, which improves the heat dissipation rate of the battery cell 74. During suction, the air inside the battery pack and the dust in the air can be quickly discharged to the outside, realizing rapid suction and dust removal. The positive insulating sheet 72 is arranged between the positive electrode sheet 71 and the battery cell 74, which ensures the installation stability of the positive insulating sheet 72, and the negative insulating sheet 76 is arranged between the negative electrode sheet 75 and the discharge electrode sheet 10. Compared with the traditional single bonding method, the installation stability of the positive insulating sheet 72 and the negative insulating sheet 76 is ensured, and the problem of the positive insulating sheet 72 and the negative insulating sheet 76 falling off due to the decrease in glue viscosity caused by the heating of the battery cell 74 is avoided.

[0046] See also Figure 2 、 Figure 3 and Figure 4 The quick-release card connection mechanism 6 includes a bracket 66 and a No. 2 plug-in electrode 68. There are two No. 2 plug-in electrodes 68. The two No. 2 plug-in electrodes 68 are fixedly installed on the bracket 66 symmetrically in front and back. The bottom of the No. 2 plug-in electrode 68 passes through the connecting hole 4 and is movably plugged into the inside of the discharge electrode 10. The left and right sides of the two No. 2 plug-in electrodes 68 are fixedly installed with racks 67 that mesh with the No. 1 spur gear 55. The right side of the bracket 66 is fixedly installed with the No. 1 plug-in electrode 60 that contacts the temperature electrode 9.

[0047] See also Figure 2 、 Figure 3 、 Figure 4 and Figure 11A fixing plate 65 is fixedly installed on the left side of the top of the bracket 66, and a spring 64 is fixedly installed on the fixing plate 65. A fixing cylinder 63 is fixedly installed on the end of the spring 64 away from the fixing plate 65. A mounting groove is provided on the fixing cylinder 63, which is convenient for one end of the spring 64 to be clamped and fixed in the mounting groove, thereby improving the installation stability of the spring 64. A lock buckle 62 is clamped and fixed on the end of the fixing cylinder 63 away from the spring 64. A clamping groove is provided at the bottom of the fixing cylinder 63, and the lock buckle 62 is clamped and fixed with the clamping groove on the fixing cylinder 63. A rotating shaft 69 is passed through the middle of the lock buckle 62, and the rotating shaft 69 is fixedly installed inside the power tool. The bottom of the lock buckle 62 is clamped inside the clamping hole 12, and a push button 61 is attached to the top of the lock buckle 62, and the push button 61 is installed inside the power tool by sliding up and down.

[0048] When in use, first weld the spring 64 to the fixing plate 65, then fit the fixing cylinder 63 onto the spring 64, then fix the bracket 66 to the inner shell of the battery compartment of the power tool, and connect the No. 2 plug-in pole piece 68 and the No. 1 plug-in pole piece 60 to the internal electrical equipment of the power tool through the wire, then plug and fix the rotating shaft 69 on the lock buckle 62 to the inner shell of the battery compartment of the power tool, and ensure that the top of the lock buckle 62 is fixed to the card slot on the fixing cylinder 63, and then slide the push button 61 up and down to connect it to the battery compartment shell of the power tool. After installation, the battery pack needs to be installed. During installation, the battery pack is inserted along the battery compartment of the power tool. The top of the battery pack squeezes the bottom of the lock buckle 62, driving the lock buckle 62 to rotate clockwise around the rotating shaft 69 until the bottom of the lock buckle 62 is engaged with the inside of the engaging hole 12. At this time, the spring 64 is in a compressed state. When the battery pack needs to be removed, the push button 61 is pushed upward, and the top of the push button 61 squeezes the lock buckle 62, driving the lock buckle 62 to rotate clockwise around the rotating shaft 69, loosening the locking fixation of the lock buckle 62 to the engaging hole 12. At this time, under the action of the battery pack's own gravity, the battery pack quickly detaches from the power tool, realizing rapid installation and disassembly of the battery pack.

[0049] See also Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6The forced heat dissipation mechanism 5 includes a plurality of heat dissipation holes 51 evenly opened on the top of the bottom shell 1. Two suction assemblies 52 are symmetrically arranged on the top surface of the bottom shell 1. The suction assembly 52 includes a mounting shaft 523 rotatably mounted on the top surface of the bottom shell 1. A plurality of suction blades 522 are fixedly mounted on the middle of the mounting shaft 523. A number three spur gear 525 is fixedly sleeved on the bottom of the mounting shaft 523. An L-shaped plate 521 is fixedly connected to the top surface of the bottom shell 1. The L-shaped plate 521 includes a horizontal section and a vertical section. The horizontal section of the L-shaped plate 521 is fixed to the top surface of the bottom shell 1. A connecting shaft runs through the rotating section, and a No. 2 spur gear 524 meshing with the No. 3 spur gear 525 is fixedly sleeved on the top of the connecting shaft, and a driven spur gear 526 is fixedly sleeved on the bottom of the connecting shaft. Side plates 56 are fixedly installed at the four corners of the top surface of the bottom shell 1. The four side plates 56 are grouped in twos, and a connecting rod 54 is installed between the two side plates 56 in the same group to rotate together. A driving bevel gear 53 meshing with the driven spur gear 526 is fixedly sleeved in the middle of the connecting rod 54, and a No. 1 spur gear 55 is fixedly sleeved at both ends of the connecting rod 54.

[0050] During use, when the battery pack is removed, the battery pack moves downward, synchronously driving the side plate 56 and the connecting rod 54 thereon to move downward, and at the same time driving the No. 1 spur gear 55 to move downward. Since the No. 1 spur gear 55 is engaged with the rack 67, when it falls, it drives the No. 1 spur gear 55 and the connecting rod 54 thereon to rotate, synchronously driving the active bevel gear 53 and the driven spur gear 526 to rotate. The gear ratio of the active bevel gear 53 and the driven spur gear 526 is five to one. The driven spur gear 526 drives the connecting shaft and the No. 2 spur gear 524 thereon to rotate, and at the same time drives the No. 3 spur gear 525 and the mounting shaft 523 thereon to rotate. The No. 2 spur gear 524 and the No. 3 spur gear 525 The gear ratio is six to one, and at the same time, the suction fan blades 522 are driven to rotate at a high speed, thereby performing suction, extracting the heat inside the battery pack from the heat dissipation holes 51, achieving rapid heat dissipation of the battery pack, and buffering the narrow tube effect between the guide columns 14, and the narrow tube effect between the limit block 84 and the battery cell 74, thereby increasing the suction air flow rate and compounding the principle of hot air rising to improve the heat dissipation efficiency. During suction, the external cold air enters the battery pack from the air inlet 15 after being filtered by the filter 19, thereby achieving filtration of the air intake and extracting the dust inside the battery pack, thereby achieving suction and dust removal inside the battery pack, reducing the impact of dust on the inside of the battery pack, and extending the service life of the equipment.

[0051] It should be noted that when using this battery pack with a quick-release structure, the buffer guide column 14 is first fixed to the arc section of the inner wall of the bottom shell 1 at equal intervals, and the fixing sleeve 73 is fixed to the bottom of the battery cell 74 by means of sleeve installation. Then, the positive electrode sheet 71 and the negative electrode sheet 75 are fixed to the control board 81 by means of soldering, and then the positive electrode insulating sheet 72 is bonded to the bottom of the fixing sleeve 73 by means of bonding. At this time, the battery cell 74 and the fixing sleeve 73 are fixed. The assembled whole is installed between the positive electrode piece 71 and the negative electrode piece 75, and then the positive electrode piece 71 is welded and fixed to the positive electrode of the battery cell 74, and the negative electrode piece 75 is welded and fixed to the negative electrode of the battery cell 74, and then the negative electrode insulating sheet 76 is bonded to the top of the negative electrode piece 75, and then the discharge electrode piece 10 and the temperature electrode piece 9 are fixed to the control board 81 by soldering, thus realizing the installation of the battery assembly 7 and the circuit board assembly 8. The battery assembly 7 and the circuit board assembly 8 are installed as a whole inside the bottom shell 1. The battery pack is then quickly removed from the tool by the user, and the user can then remove the battery pack by pressing the locking button 62 against the locking button 62.

[0052] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A battery pack with a quick-release structure, comprising a bottom shell (1), characterized in that: A cover (2) is fixedly mounted on the left side of the bottom shell (1), a snap-in hole (12) is provided on the top of the cover (2), a quick-release snap-in mechanism (6) for quick installation and removal is snap-in fixed inside the snap-in hole (12), a circuit board assembly (8) is provided in the middle of the bottom shell (1), a battery assembly (7) is provided on the circuit board assembly (8), and a forced heat dissipation mechanism (5) for quick heat dissipation is provided on the top of the bottom shell (1); The forced heat dissipation mechanism (5) comprises a plurality of heat dissipation holes (51) evenly arranged on the top of the bottom shell (1); two suction assemblies (52) are symmetrically arranged on the top surface of the bottom shell (1); the suction assembly (52) comprises a mounting shaft (523) rotatably mounted on the top surface of the bottom shell (1); a plurality of suction blades (522) are fixedly mounted on the middle of the mounting shaft (523); a third spur gear (525) is fixedly sleeved on the bottom of the mounting shaft (523); an L-shaped plate (521) is fixedly connected to the top surface of the bottom shell (1); and a horizontal section of the L-shaped plate (521) is rotatably penetrated. A connecting shaft, a second spur gear (524) meshing with a third spur gear (525) is fixedly sleeved on the top of the connecting shaft, a driven spur gear (526) is fixedly sleeved on the bottom of the connecting shaft, and side plates (56) are fixedly mounted on the four corners of the top surface of the bottom shell (1), and the four side plates (56) are arranged in pairs, and a connecting rod (54) is mounted between the two side plates (56) of the same group so as to rotate together. The middle of the connecting rod (54) is fixedly sleeved with a driving bevel gear (53) meshing with the driven spur gear (526), ​​and the two ends of the connecting rod (54) are fixedly sleeved with a first spur gear (55); The quick-release clamping mechanism (6) includes a bracket (66) and a No. 2 plug-in electrode (68). There are two No. 2 plug-in electrodes (68). The two No. 2 plug-in electrodes (68) are fixedly installed on the bracket (66) at the front and rear ends. The bottom of the No. 2 plug-in electrode (68) is movably inserted into the discharge electrode (10). Racks (67) meshing with the No. 1 spur gear (55) are fixedly installed on the left and right sides of the two No. 2 plug-in electrodes (68). The No. 1 plug-in electrode (60) in contact with the temperature electrode (9) is fixedly installed on the right side of the bracket (66).

2. The battery pack with a quick-release structure according to claim 1, characterized in that: The bottom shell (1) comprises an arc section and a vertical section. A plurality of buffer guide columns (14) are evenly fixedly installed on the inner wall of the arc section of the bottom shell (1). The top and bottom of the buffer guide columns (14) are both provided with two inclined grooves. A clamping block (17) is fixedly installed on both vertical inner walls of the bottom shell (1). The clamping block (17) is provided with a clamping groove (16). A plurality of heat dissipation fins (20) corresponding to the buffer guide columns (14) are evenly fixedly passed through the arc section of the bottom shell (1). One end of the heat dissipation fin (20) is fixedly passed through the bottom shell (1) and then inserted into the interior of the buffer guide column (14).

3. The battery pack with a quick-release structure according to claim 1, characterized in that: The bottom of the bottom shell (1) is evenly provided with a plurality of air inlets (15), the top of the bottom shell (1) is provided with two communication holes (4) at the front and rear, and a filter screen (19) is detachably mounted on the inner bottom surface of the bottom shell (1).

4. The battery pack with a quick-release structure according to claim 2, characterized in that: A plurality of heat dissipation openings (13) are evenly arranged on the bag cover (2), and a buckle (18) is fixedly mounted on the bag cover (2) and is engaged and fixed with the card slot (16).

5. The battery pack with a quick-release structure according to claim 1, characterized in that: The circuit board assembly (8) includes a control board (81) fixedly mounted inside the bottom shell (1), a charging port (3) fixedly mounted on the middle portion of the left side of the control board (81), a power button (83) fixedly mounted on the bottom portion of the left side of the control board (81), a button seat (82) provided on the power button (83), the button seat (82) movably extending through the bottom portion of the cover (2), two limit blocks (84) fixedly mounted on the front and rear portions of the right side of the control board (81), an arc-shaped limit groove (85) provided on the side of the two limit blocks (84) away from the control board (81), and guide grooves (86) provided on the upper and lower portions of the two limit blocks (84).

6. The battery pack with a quick-release structure according to claim 5, characterized in that: The battery assembly (7) includes a positive electrode sheet (71) fixedly connected to the bottom of the control board (81), a positive electrode insulating sheet (72) is attached to the top of the positive electrode sheet (71), a fixed sleeve (73) is attached to the top of the positive electrode insulating sheet (72), a battery cell (74) is movably sleeved on the top of the fixed sleeve (73), a avoidance hole is opened at the bottom of the fixed sleeve (73), and the top of the positive electrode sheet (71) passes through the avoidance hole and is welded to the positive electrode of the battery cell (74).

7. The battery pack with a quick-release structure according to claim 6, characterized in that: The top of the battery cell (74) is welded and fixed to the negative electrode sheet (75), the negative electrode sheet (75) is welded and fixed to the top of the control board (81), the top of the negative electrode sheet (75) is bonded with a negative electrode insulating sheet (76), two discharge electrode sheets (10) are fixedly connected to the front and back of the top of the control board (81), the bottoms of the two discharge electrode sheets (10) are bonded to the top of the negative electrode insulating sheet (76), a temperature electrode (9) is fixedly connected to the middle of the top of the control board (81), the bottom of the temperature electrode (9) is bonded to the top of the negative electrode insulating sheet (76), and a pressing plate (11) is fixedly installed on the top of the cover (2), and the bottom of the pressing plate (11) is bonded to the top of the temperature electrode (9).

8. The battery pack with a quick-release structure according to claim 1, characterized in that: A fixing plate (65) is fixedly mounted on the left side of the top of the bracket (66), a spring (64) is fixedly mounted on the fixing plate (65), and a fixing cylinder (63) is fixedly mounted on one end of the spring (64) away from the fixing plate (65).

9. The battery pack with a quick-release structure according to claim 8, characterized in that: The end of the fixing cylinder (63) away from the spring (64) is fixedly connected with a lock buckle (62), and a rotating shaft (69) is rotated and passed through the middle of the lock buckle (62). The rotating shaft (69) is fixedly installed inside the power tool. The bottom of the lock buckle (62) is connected to the inside of the clamping hole (12). The top of the lock buckle (62) is fitted with a push button (61), and the push button (61) is installed inside the power tool so as to slide up and down.

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