Split-type power bank convenient to carry

Abstract

The invention discloses a split-type power bank convenient to carry, and belongs to the technical field of power banks, the split-type power bank comprises a base, a plurality of main batteries are uniformly arranged on the base, side plates are symmetrically and rotatably mounted on the base, an unfolding assembly is arranged between the two side plates, and by arranging the unfolding assembly and a fixing assembly, the portability of the power bank is improved; the portable power bank can be quickly unfolded or folded according to the actual requirements of a user, the problem that storage is inconvenient due to the fact that the size of the portable power bank is too large can be effectively solved, by arranging an auxiliary unit, a cover plate can be quickly fixed, under the action of an arc-shaped strip block and an arc-shaped strip plate, double locking of the position of the cover plate is achieved, and use is convenient. And by arranging the positioning sliding block, the position of the main battery can be positioned when the main battery is installed, so that the situation that the positive electrode and the negative electrode are reversely connected when the main battery is installed is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of power banks, and in particular to a split power bank that is easy to carry. Background Art

[0002] In the current use scenario of mobile devices, power banks, as a portable charging device, have been widely used in people's daily lives. However, the design of traditional power banks often has problems such as being too large and inconvenient to carry. Especially when traveling or going on long trips, the size of the power bank often becomes a burden for users. Although the existing split power banks have a reduced size after being disassembled, the folding structure is complex, which is not convenient for users to quickly unfold, and the firmness and stability after assembly are often difficult to ensure, and the assembly process is cumbersome, which is not conducive to users' quick use. Therefore, the present invention provides a split power bank that is easy to carry. Summary of the invention

[0003] The present invention aims at the defects in the prior art and provides a split-type power bank that is easy to carry, which overcomes the problems that the firmness and stability of the power bank after assembly are often difficult to ensure and the assembly process is cumbersome, which is not conducive to quick use by users.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a split-type power bank that is easy to carry, comprising a base, on which a plurality of main batteries are evenly arranged, side panels are symmetrically rotatably installed on the base, an unfolding assembly is arranged between the two side panels, and the unfolding assembly is used to adjust the position of the side panels, and a fixing assembly is also arranged on the base, and the fixing assembly comprises a cover plate, and the side panels are movably connected to the cover plate, and a bar rotating plate is also symmetrically rotatably installed on the base, and an arc-shaped strip is fixedly arranged at the end of the bar rotating plate, and a slide groove cooperating with the arc-shaped strip is symmetrically arranged on the cover plate, and the arc-shaped strip is used to limit the position of the cover plate, and a long-arm rotating plate is also rotatably installed on the side plate, and an arc-shaped strip is fixedly arranged at the end of the long-arm rotating plate, and an arc-shaped slide groove cooperating with the arc-shaped strip is arranged on the bar rotating plate, and the arc-shaped strip is used to limit the position of the bar rotating plate, and an auxiliary unit is arranged between the bar rotating plate and the base, and the auxiliary unit is used to adjust the positions of the bar rotating plate and the long-arm rotating plate.

[0005] Furthermore, a torsion spring is arranged between the base and the side plate, positioning blocks are symmetrically fixed on the end surfaces of the side plates, the positioning blocks on the two side plates are staggered, and a groove cooperating with the positioning blocks is arranged on the cover plate, and an installation chamber for the main battery is formed between the base, the cover plate and the side plates.

[0006] Furthermore, the unfolding assembly includes two symmetrically rotatably mounted transmission shafts on the base, on which unfolding screw rods are rotatably mounted, and a torsion spring is arranged between the transmission shafts and the corresponding unfolding screw rods. An unfolding rack is also symmetrically slidably mounted on the base, and a fan-shaped gear is fixedly arranged on the side of the side plate. The unfolding rack and the fan-shaped gear constitute a gear rack pair, and the unfolding rack and the unfolding screw rod constitute a spiral pair.

[0007] Furthermore, the auxiliary units all include auxiliary strips, which are rotatably mounted on the corresponding strip-shaped rotating plates, and auxiliary gears are fixedly mounted on the long arm rotating plates. Arc-shaped racks are fixedly mounted on the ends of the auxiliary strips, and a gear rack pair is formed when the arc-shaped racks and the corresponding auxiliary gears are engaged. Limiting short columns are fixedly mounted on the side plates, and the limiting short columns are used to limit the rotating position of the strip-shaped rotating plates. A torsion spring is arranged between the long arm rotating plate and the corresponding side plate.

[0008] Furthermore, the center line of the rotational connection between the strip rotating plate and the auxiliary strip plate is on the same straight line as the center line of the rotational connection between the strip rotating plate and the base, a torsion spring is arranged between the strip rotating plate and the base, and a torsion spring is arranged between the strip rotating plate and the auxiliary strip plate. The elastic force of the torsion spring between the strip rotating plate and the auxiliary strip plate is always greater than the elastic force of the torsion spring between the strip rotating plate and the base.

[0009] Furthermore, a second arc-shaped clearance groove cooperating with the arc-shaped strip block is symmetrically arranged on the base, and a first arc-shaped clearance groove cooperating with the arc-shaped rack is also symmetrically arranged on the base.

[0010] Furthermore, the auxiliary unit also includes a gear box fixedly mounted on the base, the output shaft of the gear box is fixedly connected to the auxiliary strip, an auxiliary worm gear is fixedly mounted on the input shaft of the gear box, an auxiliary worm is fixedly arranged at the end of the transmission shaft, and the auxiliary worm gear and the corresponding auxiliary worm constitute a worm gear mechanism.

[0011] Furthermore, a positive electrode contact plate and a negative electrode contact plate are fixedly mounted on the base, a positive electrode contact block and a negative electrode contact block are fixedly mounted on the lower end surface of the main battery, a display panel and a wiring board are also fixedly mounted on the base, and a backup battery is symmetrically fixedly mounted on the base.

[0012] Furthermore, a plurality of positioning sliders are evenly and slidably installed on the base, spring sheets are arranged between the positioning sliders and the base, limiting grooves cooperating with the positioning sliders are arranged on the lower end surfaces of the main batteries, and positioning grooves are arranged on the positioning sliders, and the positioning grooves are used to limit the position of the main battery on the base.

[0013] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention improves the portability of the power bank by providing an unfolding component and a fixing component, and can be quickly unfolded or stored according to the actual needs of the user, and can also effectively avoid the storage inconvenience caused by the large size of the power bank. (2) The present invention can quickly fix the cover plate by providing an auxiliary unit, and under the action of the arc-shaped strip and the arc-shaped strip, the position of the cover plate can be double locked, thereby improving the firmness of the assembled power bank. (3) The present invention can provide positioning for the position of the main battery when installing the main battery by providing a positioning slider, thereby preventing the positive and negative poles of the main battery from being connected in reverse when installing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 It is a structural schematic diagram of the cover plate of the present invention.

[0016] Figure 3 for Figure 2 A local enlarged schematic diagram of point A in the middle.

[0017] Figure 4 It is a structural schematic diagram of the strip-shaped rotating plate of the present invention.

[0018] Figure 5 for Figure 4 A local enlarged schematic diagram of point B in the middle.

[0019] Figure 6 It is a front view of the structure of the strip-shaped rotating plate of the present invention.

[0020] Figure 7 This is a front view of the structure of the unfolded rack of the present invention.

[0021] Figure 8 It is a structural schematic diagram of the positioning slider of the present invention.

[0022] Fig. 9 It is a structural schematic diagram of the positioning groove of the present invention.

[0023] Fig.10 It is a schematic diagram of the structure of the limiting groove of the present invention.

[0024] Fig.11 It is a schematic diagram of the structure of the base of the present invention in a folded state.

[0025] Figure numerals: 101-base; 102-cover plate; 103-main battery; 104-side plate; 105-cover housing 1; 106-cover housing 2; 107-display panel; 108-wiring board; 109-strip rotating plate; 110-auxiliary strip plate; 111-positioning block; 112-arc strip block; 113-limiting short column; 114-arc rack; 115-long arm rotating plate; 116-arc strip plate; 117-auxiliary gear; 118-spare battery; 119-gear Box; 120- auxiliary motor; 121- transmission shaft; 122- auxiliary worm gear; 123- auxiliary worm; 124- unfolding rack; 125- unfolding screw rod; 126- fan gear; 127- positive electrode contact plate; 128- negative electrode contact plate; 129- positioning slider; 130- positioning groove; 131- arc-shaped clearance groove one; 132- arc-shaped clearance groove two; 133- spring sheet; 134- limiting groove; 135- positive electrode contact block; 136- negative electrode contact block. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0027] Example: Reference Figure 1-Figure 11 A split power bank that is easy to carry includes a base 101, on which a plurality of main batteries 103 are evenly arranged, on which side panels 104 are symmetrically rotatably installed, an unfolding assembly is arranged between the two side panels 104, and the unfolding assembly is used to adjust the position of the side panels 104, and a torsion spring is arranged between the base 101 and the side panels 104, one end of the torsion spring is fixedly connected to the base 101, and the other end of the torsion spring is fixedly connected to the side panels 104.

[0028] The unfolding assembly includes two symmetrical transmission shafts 121 rotatably mounted on the base 101, an auxiliary motor 120 is fixedly mounted on the base 101, both ends of the output shaft of the auxiliary motor 120 are fixedly connected to the two transmission shafts 121, and unfolding screw rods 125 are rotatably mounted on the transmission shafts 121, and the rotation directions of the two unfolding screw rods 125 are opposite. A torsion spring is arranged between the transmission shafts 121 and the corresponding unfolding screw rods 125, one end of the torsion spring is fixedly connected to the transmission shaft 121, and the other end of the torsion spring is fixedly connected to the unfolding screw rod 125. An unfolding rack 124 is also symmetrically slidably mounted on the base 101, and the unfolding rack 124 and the unfolding screw rod 125 constitute a spiral pair, and a fan gear 126 is fixedly arranged on the side of the side plate 104, and the unfolding rack 124 and the fan gear 126 constitute a gear rack pair.

[0029] In the initial position, the torsion spring between the side plate 104 and the base 101 is not compressed, and the side plate 104 is in a horizontal state. At this time, the side plate 104 is in a folded state relative to the base 101, and the two unfolding racks 124 are located at the farthest position.

[0030] Starting the auxiliary motor 120 drives the two transmission shafts 121 to rotate synchronously. Under the action of the torsion spring between the transmission shaft 121 and the unfolding screw rod 125, the two unfolding screw rods 125 rotate synchronously. Since the rotation directions of the two unfolding screw rods 125 are opposite, the two unfolding racks 124 move in the direction of approaching each other, and the two fan gears 126 rotate synchronously, and the rotation directions of the two fan gears 126 are opposite, so that the two side plates 104 rotate synchronously in opposite directions, and finally the two side plates 104 are in a vertical upward state. At this time, the side plates 104 contact the inner wall of the base 101 and cannot continue to rotate, and the transmission shaft 121 continues to rotate. Since the side plates 104 cannot continue to rotate, that is, the unfolding screw rod 125 cannot continue to rotate, the transmission shaft 121 rotates relative to the unfolding screw rod 125, and the torsion spring between the transmission shaft 121 and the unfolding screw rod 125 is compressed.

[0031] A fixing assembly is also provided on the base 101, and the fixing assembly includes a cover plate 102. The side plates 104 are movably connected to the cover plate 102, and positioning blocks 111 are symmetrically fixedly provided on the end faces of the side plates 104. The positioning blocks 111 on the two side plates 104 are staggered, and a groove cooperating with the positioning blocks 111 is provided on the cover plate 102. An installation chamber for the main battery 103 is formed between the base 101, the cover plate 102, and the side plates 104.

[0032] A positive electrode contact plate 127 and a negative electrode contact plate 128 are fixedly arranged on the base 101, a positive electrode contact block 135 and a negative electrode contact block 136 are fixedly arranged on the lower end surface of the main battery 103, a plurality of positioning sliders 129 are evenly and slidably installed on the base 101, a spring sheet 133 is arranged between the positioning slider 129 and the base 101, a limiting groove 134 cooperating with the positioning slider 129 is arranged on the lower end surface of the main battery 103, a positioning groove 130 is arranged on the positioning slider 129, the positioning groove 130 is not located at the center position of the positioning slider 129, and the positioning groove 130 is used to limit the position of the main battery 103 on the base 101, and a display panel 107 and a wiring board 108 are also fixedly installed on the base 101, the display panel 107 is used to limit the power of the main battery 103, and the wiring board 108 is used to connect the charging cable.

[0033] When the main battery 103 is installed on the base 101, the limiting groove 134 on the main battery 103 is engaged with the corresponding positioning slider 129. Under the action of the positioning groove 130, the position of the main battery 103 on the base 101 is limited, so that the positive electrode contact block 135 can always contact the positive electrode contact plate 127 and the negative electrode contact block 136 can always contact the negative electrode contact plate 128, thereby preventing the positive electrode contact block 135 from contacting the negative electrode contact plate 128 and preventing the negative electrode contact block 136 from contacting the positive electrode contact plate 127.

[0034] When the side plate 104 is in a horizontal state, the spring sheet 133 is in a compressed state, that is, the upper end surface of the positioning slider 129 and the inner surface of the base 101 are on the same plane, that is, the side plate 104 is folded and gives way.

[0035] When the main battery 103 is installed on the base 101, the limiting groove 134 is engaged with the corresponding positioning slider 129. At this time, the positive electrode contact block 135 is in contact with the corresponding positive electrode contact plate 127, and the negative electrode contact block 136 is in contact with the corresponding negative electrode contact plate 128. After the main battery 103 is installed, the cover plate 102 and the side plate 104 are engaged, that is, the groove on the cover plate 102 is engaged with the positioning block 111. At this time, the main battery 103 is located inside the installation chamber formed between the base 101, the cover plate 102, and the side plate 104.

[0036] A bar rotating plate 109 is also symmetrically installed on the base 101 for rotation, and a torsion spring is arranged between the bar rotating plate 109 and the base 101, one end of the torsion spring is fixedly connected to the base 101, and the other end of the torsion spring is fixedly connected to the bar rotating plate 109, and an arc-shaped strip 112 is fixedly arranged on the end of the bar rotating plate 109, and sliding grooves cooperating with the arc-shaped strip 112 are symmetrically arranged on the cover plate 102, and the arc-shaped strip 112 is used to limit the position of the cover plate 102, and limiting short columns 113 are fixedly arranged on the side plates 104, and the limiting short columns 113 are used to limit the rotation position of the bar rotating plate 109.

[0037] A long arm rotating plate 115 is also rotatably installed on the side plate 104, and a torsion spring is arranged between the long arm rotating plate 115 and the corresponding side plate 104, one end of the torsion spring is fixedly connected to the side plate 104, and the other end of the torsion spring is fixedly connected to the long arm rotating plate 115, and an arc-shaped strip plate 116 is fixedly arranged at the end of the long arm rotating plate 115, and an arc-shaped slide groove cooperating with the arc-shaped strip plate 116 is arranged on the strip rotating plate 109, and the arc-shaped strip plate 116 is used to limit the position of the strip rotating plate 109.

[0038] An auxiliary unit is arranged between the bar rotating plate 109 and the base 101, and the auxiliary unit is used to adjust the position of the bar rotating plate 109 and the long arm rotating plate 115. The auxiliary unit includes an auxiliary strip 110, and the auxiliary strip 110 is rotatably installed on the corresponding bar rotating plate 109. The center line of the rotation connection between the bar rotating plate 109 and the auxiliary strip 110 is on the same straight line as the center line of the rotation connection between the bar rotating plate 109 and the base 101. A torsion spring is arranged between the bar rotating plate 109 and the auxiliary strip 110, one end of the torsion spring is fixedly connected to the bar rotating plate 109, and the other end of the torsion spring is fixedly connected to the auxiliary strip 110. The elastic force of the torsion spring between the bar rotating plate 109 and the auxiliary strip 110 is always greater than the elastic force of the torsion spring between the bar rotating plate 109 and the base 101.

[0039] An auxiliary gear 117 is fixedly installed on the long arm rotating plate 115, and an arc-shaped rack 114 is fixedly provided at the end of the auxiliary strip plate 110. When the arc-shaped rack 114 and the corresponding auxiliary gear 117 are engaged, a gear rack pair is formed. The base 101 is symmetrically provided with an arc-shaped clearance groove 132 that cooperates with the arc-shaped strip block 112, and the base 101 is also symmetrically provided with an arc-shaped clearance groove 131 that cooperates with the arc-shaped rack 114.

[0040] In the initial position, that is, when the side plate 104 is in a horizontal state, the arc-shaped rack 114 and the corresponding arc-shaped make way groove 1 131 are located on the base 101, and the arc-shaped strip block 112 is located at the symmetrical arc-shaped make way groove 2 132 on the base 101. At this time, the strip rotating plate 109 and the auxiliary strip plate 110 are both in a horizontal state, that is, the strip rotating plate 109 and the auxiliary strip plate 110 are in a folded state. At this time, the auxiliary gear 117 and the arc-shaped rack 114 are not in contact, and the torsion spring between the base 101 and the strip rotating plate 109 and the torsion spring between the strip rotating plate 109 and the auxiliary strip plate 110 are not compressed.

[0041] After the side plate 104 is in a vertical upward state and the cover plate 102 and the side plate 104 are engaged, the auxiliary strip plate 110 is driven to rotate. Under the action of the torsion spring between the strip rotating plate 109 and the auxiliary strip plate 110, the strip rotating plate 109 and the auxiliary strip plate 110 rotate synchronously, and the torsion spring between the base 101 and the auxiliary strip plate 110 is compressed, and finally the strip rotating plate 109 contacts the corresponding limiting short column 113. At this time, the arc strip block 112 is engaged with the corresponding sliding groove on the cover plate 102. Under the action of the arc strip block 112, the cover plate 102 cannot move relative to the side plate 104, that is, the position between the cover plate 102 and the side plate 104 is locked. At this time, the arc strip plate 116 is not engaged with the arc sliding groove on the strip rotating plate 109, but the circumferential direction of the arc strip plate 116 is the same as the circumferential direction of the arc sliding groove on the strip rotating plate 109.

[0042] The auxiliary strip plate 110 continues to rotate. At this time, the strip rotating plate 109 cannot continue to rotate under the action of the limiting short column 113. The auxiliary strip plate 110 continues to rotate relative to the strip rotating plate 109, the torsion spring between the strip rotating plate 109 and the auxiliary strip plate 110 is compressed, and the arc rack 114 engages with the auxiliary gear 117. The auxiliary strip plate 110 continues to rotate. Under the action of the arc rack 114, the auxiliary gear 117 rotates, that is, the long arm rotating plate 115 and the arc strip plate 116 rotate synchronously, the torsion spring between the long arm rotating plate 115 and the side plate 104 is compressed, and the arc strip plate 116 engages with the arc slot on the strip rotating plate 109, that is, the arc strip plate 116 and the strip rotating plate 109 engage. Under the action of the arc strip plate 116, the strip rotating plate 109 cannot continue to rotate, that is, the position of the strip rotating plate 109 is locked, and then the position of the cover plate 102 is locked again.

[0043] The auxiliary unit also includes a gear box 119 fixedly mounted on the base 101, wherein two bevel gears are arranged in the gear box 119, and the two bevel gears in the gear box 119 are meshed to form a gear pair, and the output shaft of the gear box 119 is fixedly connected to the auxiliary strip 110, that is, one of the two bevel gears in the gear box 119 is fixedly connected to the auxiliary strip 110, and an auxiliary worm gear 122 is fixedly mounted on the input shaft of the gear box 119, that is, the other bevel gear of the two bevel gears in the gear box 119 is fixedly connected to the auxiliary worm gear 122, and an auxiliary worm 123 is fixedly arranged at the end of the transmission shaft 121, and the auxiliary worm gear 122 and the corresponding auxiliary worm gear 123 form a worm gear mechanism.

[0044] Start the auxiliary motor 120 to drive the transmission shaft 121 to rotate, and the auxiliary worm 123 and the unfolding screw 125 rotate synchronously. The rotation of the auxiliary worm 123 causes the auxiliary worm wheel 122 to rotate. Under the action of the gear box 119, the two auxiliary strips 110 rotate synchronously. When the unfolding screw 125 can no longer rotate, the arc strip 112 is located in contact with the cover plate 102, and the transmission shaft 121 continues to rotate. The torsion spring between the unfolding screw 125 and the transmission shaft 121 is compressed, and the auxiliary worm 123 continues to rotate synchronously, so that the two strip rotating plates 109 continue to rotate synchronously, so that the arc strip 112 and the cover plate 102 are engaged, thereby fixing the cover plate 102.

[0045] A backup battery 118 is also symmetrically fixedly installed on the base 101, and the backup battery 118 is used to provide emergency power to the auxiliary motor 120. A cover shell 105 is fixedly set on the base 101, and the cover shell 105 is used to cover the auxiliary unit. A cover shell 2 106 is symmetrically fixedly set on the cover shell 105, and the cover shell 2 106 is fixedly connected to the base 101, and the cover shell 2 106 is used to cover and protect the corresponding backup batteries 118.

[0046] Working principle: In the initial state, the side panel 104, the strip rotating plate 109, and the auxiliary strip plate 110 are in a folded state. At this time, the base 101, the cover plate 102, and the main battery 103 are each an integral whole, so that the base 101, the cover plate 102, and the main battery 103 are convenient to carry, thereby avoiding the base 101, the cover plate 102, the main battery 103, and the side panel 104 being combined into a larger volume that is inconvenient to carry.

[0047] When it is necessary to combine the base 101, the cover 102, and the main battery 103, the auxiliary motor 120 is started. Under the action of the unfolding assembly, the two side panels 104 are first placed in a vertical upward state, and then the main batteries 103 are installed on the base 101 one by one. The limiting grooves 134 on the main batteries 103 are engaged with the positioning sliders 129 on the base 101, and then the cover 102 and the side panels 104 are engaged. Then the auxiliary motor 120 is started again. Under the action of the auxiliary unit, the strip rotating plate 109 and the auxiliary strip plate 110 are rotated, that is, the arc strip block 112 is engaged with the cover 102, and then the arc strip plate 116 is engaged with the strip rotating plate 109, that is, the double locking of the position of the cover 102 is achieved, thereby improving the stability of the base 101, the cover 102, the main battery 103, and the side panels 104 after assembly.

[0048] The present invention is not limited to the above-mentioned specific implementation modes. Various changes made by technicians in the relevant technical field based on the above-mentioned conception without creative work all fall within the protection scope of the present invention.

Claims

1. A portable split power bank, comprising a base (101), on which a plurality of main batteries (103) are evenly arranged, characterized in that: The base (101) is symmetrically rotatably mounted with side panels (104), an expansion assembly is arranged between the two side panels (104), and the expansion assembly is used to adjust the position of the side panels (104). The base (101) is also provided with a fixing assembly, and the fixing assembly includes a cover plate (102), and the side panels (104) are movably connected to the cover plate (102). The base (101) is also symmetrically rotatably mounted with a strip rotating plate (109), and an arc-shaped strip block (112) is fixedly arranged at the end of the strip rotating plate (109), and the cover plate (102) is symmetrically provided with a fixing assembly that cooperates with the arc-shaped strip block (112). The arc strip (112) is used to limit the position of the cover plate (102); a long arm rotating plate (115) is also rotatably mounted on the side plate (104); an arc strip (116) is fixedly arranged at the end of the long arm rotating plate (115); an arc slide groove cooperating with the arc strip (116) is arranged on the strip rotating plate (109); the arc strip (116) is used to limit the position of the strip rotating plate (109); an auxiliary unit is arranged between the strip rotating plate (109) and the base (101); the auxiliary unit is used to adjust the position of the strip rotating plate (109) and the long arm rotating plate (115).

2. A portable split power bank according to claim 1, characterized in that: A torsion spring is provided between the base (101) and the side plate (104); positioning blocks (111) are symmetrically fixedly provided on the end surfaces of the side plates (104); the positioning blocks (111) on the two side plates (104) are staggered; a groove cooperating with the positioning blocks (111) is provided on the cover plate (102); and a mounting chamber for a main battery (103) is formed between the base (101), the cover plate (102) and the side plates (104).

3. A portable split power bank according to claim 2, characterized in that: The unfolding assembly comprises two symmetrical transmission shafts (121) rotatably mounted on a base (101), an unfolding screw rod (125) being rotatably mounted on each of the transmission shafts (121), a torsion spring being arranged between the transmission shafts (121) and the corresponding unfolding screw rods (125), an unfolding rack (124) being symmetrically slidably mounted on the base (101), a fan-shaped gear (126) being fixedly arranged on the side of the side plate (104), the unfolding rack (124) and the fan-shaped gear (126) forming a gear rack pair, and the unfolding rack (124) and the unfolding screw rod (125) forming a spiral pair.

4. A portable split power bank according to claim 3, characterized in that: The auxiliary units all include an auxiliary strip plate (110), the auxiliary strip plate (110) is rotatably mounted on the corresponding strip-shaped rotating plate (109), an auxiliary gear (117) is fixedly mounted on the long arm rotating plate (115), an arc-shaped rack (114) is fixedly arranged at the end of the auxiliary strip plate (110), and the arc-shaped rack (114) and the corresponding auxiliary gear (117) form a gear rack pair when they are engaged, a limiting short column (113) is fixedly arranged on the side plate (104), and the limiting short column (113) is used to limit the rotation position of the strip-shaped rotating plate (109), and a torsion spring is arranged between the long arm rotating plate (115) and the corresponding side plate (104).

5. A portable split power bank according to claim 4, characterized in that: The center line of the rotational connection between the strip rotating plate (109) and the auxiliary strip plate (110) is on the same straight line as the center line of the rotational connection between the strip rotating plate (109) and the base (101); a torsion spring is provided between the strip rotating plate (109) and the base (101); and a torsion spring is provided between the strip rotating plate (109) and the auxiliary strip plate (110); the elastic force of the torsion spring between the strip rotating plate (109) and the auxiliary strip plate (110) is always greater than the elastic force of the torsion spring between the strip rotating plate (109) and the base (101).

6. A portable split power bank according to claim 5, characterized in that: The base (101) is symmetrically provided with a second arc-shaped clearance groove (132) that cooperates with the arc-shaped strip block (112), and the base (101) is also symmetrically provided with a first arc-shaped clearance groove (131) that cooperates with the arc-shaped rack (114).

7. A portable split power bank according to claim 6, characterized in that: The auxiliary unit further comprises a gear box (119) fixedly mounted on the base (101); an output shaft of the gear box (119) is fixedly connected to the auxiliary strip plate (110); an auxiliary worm wheel (122) is fixedly mounted on the input shaft of the gear box (119); an auxiliary worm (123) is fixedly arranged at the end of the transmission long shaft (121); the auxiliary worm wheel (122) and the corresponding auxiliary worm (123) constitute a worm gear machine.

8. The portable split power bank according to claim 7, characterized in that: A positive electrode contact plate (127) and a negative electrode contact plate (128) are fixedly mounted on the base (101); a positive electrode contact block (135) and a negative electrode contact block (136) are fixedly mounted on the lower end surface of the main battery (103); a display panel (107) and a wiring board (108) are also fixedly mounted on the base (101); and a backup battery (118) is symmetrically fixedly mounted on the base (101).

9. A portable split power bank according to claim 8, characterized in that: A plurality of positioning sliders (129) are evenly and slidably mounted on the base (101); spring sheets (133) are provided between the positioning sliders (129) and the base (101); limiting grooves (134) cooperating with the positioning sliders (129) are provided on the lower end surfaces of the main batteries (103); positioning grooves (130) are provided on the positioning sliders (129); and the positioning grooves (130) are used to limit the position of the main batteries (103) on the base (101).

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