A mobile power supply

Abstract

The application belongs to the technical field of power supply, and particularly relates to a mobile power supply which comprises a shell and an electric core, the electric core is arranged in the interior of the shell, the top of the shell is provided with a shell cover, the bottom of the shell cover is provided with a middle cover, the middle part of the middle cover is provided with a middle groove, the interior of the middle groove is rotationally connected with a curved arm, the torsional spring is fixedly connected between the curved arm and the inner wall of the middle groove, and the torsional spring is coaxial with the curved arm. The mobile power supply realizes the intelligent locking of the shell cover through the mechanical linkage structure of the roller pressure, the curved arm rotation and the gear groove transmission. Compared with the pure electronic lock of the traditional mobile power supply, the mechanical trigger mechanism has a faster response speed than the electronic sensor, and still maintains good trigger reliability in a low-temperature environment. The industry problem that the electronic elements of the electronic lock of the traditional mobile power supply fail in an extreme temperature is solved. The transmission components are highly integrated in the middle groove space, and the space utilization rate in the mobile power supply is improved.

Description

Technical Field

[0001] This invention relates to the field of power supply technology, and more particularly to a portable power supply. Background Technology

[0002] As a crucial energy supply device for portable electronic devices, the safety and reliability of power banks have always been a focus of industry attention. Traditional power bank locking mechanisms mainly rely on electromagnetic locks or purely mechanical locks to open and close the cover, but these methods face numerous technical bottlenecks in practical applications.

[0003] A search revealed Chinese patent application CN207134825U, which discloses a power bank top cover and a power bank. The power bank top cover is installed at the opening on the top of the power bank's outer casing. The power bank using this structure has a small overall volume, and the top cover is easy to install and remove, as are the parts that can be replaced.

[0004] However, the aforementioned patents have not yet solved the technical problem of automating the locking process. Their locking function still relies on traditional mechanical structures, and the level of intelligence and reliability are insufficient. There is an urgent need to design a mobile power supply to solve the above problems. Summary of the Invention

[0005] To address the technical problem of insufficient automation in existing mobile power bank locking mechanisms, this invention proposes a mobile power bank.

[0006] This invention proposes a portable power supply, comprising a housing and a battery cell. The battery cell is disposed inside the housing. A cover is provided at the top of the housing, and a middle cover is provided at the bottom of the cover. A central groove is formed in the middle of the middle cover. A curved arm is rotatably connected inside the central groove. A torsion spring is fixedly connected between the curved arm and the inner wall of the central groove, and the torsion spring is coaxial with the curved arm. A first roller is rotatably connected to the end of the curved arm near the battery cell. A pressure groove is provided at the top of the battery cell. The rim of the first roller is fitted into the pressure groove. A toothed groove is formed on the side of the curved arm away from the first roller. A slider is slidably connected inside the central groove. A locking tooth is fixedly connected to the side of the slider, and the locking tooth engages with the toothed groove of the curved arm. A limit switch is fixedly connected to the inner wall of the central groove. The trigger part of the limit switch is located on the side of the slider away from the curved arm. An electromagnetic locking mechanism is provided between the housing and the cover, and the limit switch is electrically connected to the electromagnetic locking mechanism.

[0007] Preferably, a partition is fixedly connected to the top of the battery cell, a guide rail is fixedly connected to the top of the partition, and sliding sleeves are slidably connected to both ends of the guide rail. A spring sheet is fixedly connected between the two sliding sleeves. The spring sheet is set as an arc shape with a central protrusion. A protrusion is provided on the top of both sliding sleeves. The sliding sleeve is located between the two protrusions. A slot is opened at the bottom of the pressure groove, and the middle part of the spring sheet is engaged in the inside of the slot.

[0008] Preferably, an impact pad is fixedly connected to the middle of the slider near the limit switch, and the impact pad corresponds to and cooperates with the trigger part of the limit switch.

[0009] Preferably, two second rollers are fixedly connected to both sides of the slider. The two second rollers located on the same side of the slider are respectively attached to the two sides of the middle cover. The cover body of the middle cover has four wheel grooves, and the wheel rims of the four second rollers are respectively fitted into the four wheel grooves.

[0010] Preferably, a base support is fixedly connected to the inner wall of the bottom of the housing. The base support is made of thermally conductive modified plastic. The battery cell is fixedly connected to the top of the base support. Support feet are fixedly connected to the four corners of the outer wall of the bottom of the housing. The support feet are made of rubber.

[0011] Preferably, the outer circumferential surface of the middle cover is fixedly connected to a side ring, which is configured as a closed rectangular ring structure. The four corners of the top of the side ring are fixedly connected to insert rods, and the four corners of the bottom of the cover are fixedly connected to sleeves. The four insert rods are respectively inserted into the interior of the four sleeves. The inner walls on both sides of the cover are fixedly connected to limit blocks, and the two limit blocks are respectively slidably connected to both sides of the side ring.

[0012] Preferably, a power interface is provided on one side of the battery cell, the power interface extends to the outside of the housing, and a protective sleeve is fitted over the portion of the power interface located outside the housing, with raised strips provided on the outer wall of the protective sleeve.

[0013] Preferably, a storage groove is fixedly connected to the outer wall of the top of the shell cover, and a handle is rotatably connected inside the storage groove.

[0014] Preferably, the electromagnetic locking mechanism includes:

[0015] The locking buckle is fixedly connected to the outer wall of the shell cover. The inside of the locking buckle is rotatably connected to a hook. A support plate is fixedly connected to the inner wall of one side of the locking buckle. The support plate and the hook are fixedly connected to the same tension spring. An electromagnet is fixedly connected to the side of the locking buckle away from the support plate. A positioning block is fixedly connected to the side of the hook close to the electromagnet. The positioning block is made of iron.

[0016] The lower locking buckle has a threaded sleeve fixedly connected to its outer wall. The threaded sleeve has a screw connected to its inner thread. One end of the screw extends into the interior of the lower locking buckle, and the other end of the screw is fixedly connected to a knob. The extended end of the screw is located on the rotation path of the hook.

[0017] Preferably, a display screen is fixedly connected to the top of the cover, and buttons are symmetrically distributed on both sides of the display screen.

[0018] Compared with the prior art, the present invention provides a portable power source with the following advantages:

[0019] 1. This portable power bank achieves intelligent locking of the cover through a mechanical linkage structure of roller pressure, curved arm rotation, and toothed transmission. Compared with the purely electronic locks of traditional portable power banks, the mechanical triggering mechanism has a faster response speed than electronic sensors and maintains good triggering reliability in low-temperature environments. It solves the industry problem of electronic component failure in the electronic locks of traditional portable power banks under extreme temperatures. The transmission components are highly integrated in the central slot space, improving the internal space utilization of the portable power bank.

[0020] 2. This portable power bank, by setting up a spring sheet, sliding sleeves, and guide rails, when the cover is pressed down, the torsion spring, the first roller, and the pressure groove compress the spring sheet downwards. The deformation of the spring sheet buffers the pressure and prevents direct damage to the battery cell. The two sliding sleeves can slide along the guide rails to constrain the deformation trajectory of the spring sheet. The two protrusions constrain the position range of the pressure groove. When the cover is locked with the housing, if the battery cell expands, the expansion force of the battery cell acts on the partition, and the sliding sleeves on the guide rails compress the spring sheet, causing its arc-shaped protrusion to dynamically engage with the slot, thereby achieving adaptive pressure adjustment.

[0021] 3. This portable power bank, by setting up a hook, screw, tension spring and electromagnet, attracts an iron positioning block when the electromagnet is energized, overcoming the tension of the tension spring to disengage the hook from the screw. When the cover is closed, the hook extends into the lower locking buckle, triggering the limit switch, de-energizing the electromagnet, resetting the tension spring, and locking the hook with the screw, thus achieving locking between the housing and the cover. This facilitates quick disassembly and maintenance of the cover and is suitable for application scenarios that require frequent replacement of battery cells. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a portable power supply proposed in this invention;

[0023] Figure 2 This is a schematic diagram of the internal structure of the housing of a portable power bank proposed in this invention;

[0024] Figure 3 This is a partial structural schematic diagram of a mobile power supply proposed in this invention;

[0025] Figure 4 This is a front view of the curved arm, slider, and limit switch of a mobile power supply according to the present invention.

[0026] Figure 5This is a schematic diagram of the middle cover structure of a mobile power bank proposed in this invention;

[0027] Figure 6 Exploded view of the sliding sleeve, guide rail and partition of a mobile power supply proposed in this invention;

[0028] Figure 7 This is a schematic diagram of the electromagnetic locking mechanism structure of a mobile power supply proposed in this invention.

[0029] Figure 8 This is a schematic diagram of the internal structure of the locking latch of a portable power bank proposed in this invention.

[0030] In the diagram: 1. Housing; 2. Support leg; 3. Housing cover; 4. Storage slot; 5. Handle; 6. Display screen; 7. Button; 8. Upper lock; 9. Lower lock; 10. Protective sleeve; 11. Raised strip; 12. Battery cell; 13. Power interface; 14. Base; 15. Middle cover; 16. Sleeve; 17. Insert rod; 18. Limit block; 19. Middle slot; 20. Crank arm; 21. Slider; 22. Limit switch; 23. Pressure groove; 24. Torsion spring; 25. First roller; 26. Clamping tooth; 27. Second roller; 28. Partition plate; 29. ​​Guide rail; 30. Sliding sleeve; 31. Spring plate; 32. Impact pad; 33. Side ring; 34. Wheel groove; 35. Clamping groove; 36. Hook; 37. Support plate; 38. Electromagnet; 39. Tension spring; 40. Threaded sleeve; 41. Screw; 42. Knob; 43. Positioning block. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] Reference Figures 1-8A portable power bank includes a housing 1 and a battery cell 12. The battery cell 12 is disposed inside the housing 1. A cover 3 is disposed on the top of the housing 1, and a middle cover 15 is disposed on the bottom of the cover 3. A central groove 19 is formed in the middle of the middle cover 15. A crank arm 20 is rotatably connected inside the central groove 19. A torsion spring 24 is fixedly connected between the crank arm 20 and the inner wall of the central groove 19, and the torsion spring 24 is coaxial with the crank arm 20. A first roller 25 is rotatably connected to the end of the crank arm 20 near the battery cell 12. A pressure groove 23 is provided on the top of the battery cell 12. The rim of the roller 25 is fitted into the inside of the pressure groove 23. The side of the crank arm 20 away from the first roller 25 has a toothed groove. The inside of the middle groove 19 is slidably connected to the slider 21. The side of the slider 21 is fixedly connected to the locking tooth 26, which engages with the toothed groove of the crank arm 20. The inner wall of the middle groove 19 is fixedly connected to the limit switch 22. The trigger part of the limit switch 22 is located on the side of the slider 21 away from the crank arm 20. An electromagnetic locking mechanism is provided between the housing 1 and the cover 3. The limit switch 22 is electrically connected to the electromagnetic locking mechanism.

[0033] When in use, when the user closes the cover 3, the first roller 25 exerts downward pressure on the pressure groove 23 on the top of the battery cell 12, driving the crank arm 20 to rotate around the torsion spring 24. Through the meshing transmission of the tooth groove and the locking tooth 26, the slider 21 is pushed to move laterally and triggers the limit switch 22, thereby controlling the electromagnetic locking mechanism to cut off the power and locking the cover 3 and the housing 1. The mechanical pressure and mechanical transmission when the cover 3 is pressed down realize the automatic locking of the housing 1 and the cover 3.

[0034] In this invention, a partition plate 28 is fixedly connected to the top of the battery cell 12, and a guide rail 29 is fixedly connected to the top of the partition plate 28. Sliding sleeves 30 are slidably connected to both ends of the guide rail 29. A spring plate 31 is fixedly connected between the two sliding sleeves 30. The spring plate 31 is configured as an arc shape with a central protrusion. A protrusion is provided on the top of each of the two sliding sleeves 30, and the sliding sleeve 30 is located between the two protrusions. A slot 35 is provided at the bottom of the pressure groove 23, and the middle part of the spring plate 31 is engaged inside the slot 35. When the cover 3 is pressed down, the torsion spring 24, the first roller 25, and the pressure groove 23... The spring plate 31 is compressed downwards, and the deformation of the spring plate 31 buffers the pressure to prevent direct damage to the battery cell 12. The two sliding sleeves 30 can slide along the guide rail 29 to constrain the deformation trajectory of the spring plate 31. The two protrusions constrain the position range of the pressure groove 23. When the cover 3 is locked with the housing 1, if the battery cell 12 expands, the expansion force of the battery cell 12 acts on the partition 28, and the sliding sleeves 30 on the guide rail 29 compress the spring plate 31, so that its arc-shaped protrusion dynamically engages with the slot 35 to achieve adaptive pressure adjustment.

[0035] In this invention, an impact pad 32 is fixedly connected to the middle of the slider 21 near the limit switch 22. The impact pad 32 corresponds to and cooperates with the trigger part of the limit switch 22. When the slider 21 moves, the impact pad 32 presses the trigger part of the limit switch 22 vertically in a surface contact manner.

[0036] In this invention, two second rollers 27 are fixedly connected to both sides of the slider 21. The two second rollers 27 located on the same side of the slider 21 are respectively attached to the two sides of the middle cover 15. The cover body of the middle cover 15 has four wheel grooves 34. The wheel rims of the four second rollers 27 are respectively fitted into the interior of the four wheel grooves 34. The four second rollers 27 roll in the wheel grooves 34 respectively, restricting the slider 21 to only move in a straight line.

[0037] In this invention, a base support 14 is fixedly connected to the inner wall of the bottom of the housing 1. The base support 14 is made of thermally conductive modified plastic. The battery cell 12 is fixedly connected to the top of the base support 14. Support legs 2 are fixedly connected to the four corners of the outer wall of the bottom of the housing 1. The support legs 2 are made of rubber. The base support 14 supports and fixes the battery cell 12. The base support 14 can conduct the heat generated by the battery cell 12 during operation to the housing 1. The rubber support legs 2 are used to support the housing 1. When the bottom of the housing 1 contacts the support surface, the support legs 2 can absorb the vibration energy generated by the collision.

[0038] In this invention, a side ring 33 is fixedly connected to the outer circumferential surface of the middle cover 15. The side ring 33 is configured as a closed rectangular ring structure. Insert rods 17 are fixedly connected to the four corners of the top of the side ring 33. Sleeves 16 are fixedly connected to the four corners of the bottom of the shell cover 3. The four insert rods 17 are respectively inserted into the interior of the four sleeves 16. Limiting blocks 18 are fixedly connected to the inner walls on both sides of the shell cover 3. The two limiting blocks 18 are respectively slidably connected to the two sides of the side ring 33. The insertion and engagement of the insert rods 17 and the sleeves 16 realizes the longitudinal positioning between the middle cover 15 and the shell cover 3. The sliding engagement of the spring sheet, the limiting block 18 and the side ring 33 constrains the longitudinal positioning between the shell 1 and the middle cover 15.

[0039] In this invention, a power interface 13 is provided on one side of the battery cell 12. The power interface 13 extends to the outside of the housing 1. A protective sleeve 10 is fitted onto the part of the power interface 13 located outside the housing 1. A protrusion 11 is provided on the outer wall of the protective sleeve 10. The exposed part of the power interface 13 is protected by the protective sleeve 10. The protrusion 11 facilitates the gripping of the protective sleeve 10 when inserting or removing it.

[0040] In this invention, a storage groove 4 is fixedly connected to the outer wall of the top of the cover 3, and a handle 5 is rotatably connected inside the storage groove 4. The cover 3 can be moved by the handle 5. After the cover 3 and the housing 1 are locked together, the power supply can be carried by the handle 5. The handle 5 can be rotated and stored in the storage groove 4.

[0041] In this invention, the electromagnetic locking mechanism includes:

[0042] The locking buckle 8 is fixedly connected to the outer wall of the shell cover 3. The locking buckle 8 is rotatably connected to the inside of the locking buckle 8. The inner wall of one side of the locking buckle 8 is fixedly connected to the support plate 37. The support plate 37 and the hook 36 are fixedly connected to the same tension spring 39. The side of the locking buckle 8 away from the support plate 37 is fixedly connected to the electromagnet 38. The side of the hook 36 close to the electromagnet 38 is fixedly connected to the positioning block 43, which is made of iron.

[0043] The lower locking buckle 9 has a threaded sleeve 40 fixedly connected to its outer wall. The threaded sleeve 40 has a screw 41 threadedly connected to its inner thread. One end of the screw 41 extends into the interior of the lower locking buckle 9, and the other end of the screw 41 is fixedly connected to a knob 42. The extended end of the screw 41 is located on the rotation path of the hook 36.

[0044] When the electromagnet 38 is energized, it attracts the iron positioning block 43, which overcomes the tension of the tension spring 39 and causes the hook 36 to disengage from the screw 41. When the cover 3 is closed, the hook 36 extends into the lower locking buckle 9, triggering the limit switch 22. The electromagnet 38 is de-energized, the tension spring 39 is reset, and the hook 36 engages with the screw 41, thus achieving locking between the housing 1 and the cover 3. This facilitates quick disassembly and maintenance of the cover 3 and is suitable for application scenarios that require frequent replacement of the battery cell 12.

[0045] In this invention, a display screen 6 is fixedly connected to the top of the cover 3, and buttons 7 are symmetrically distributed on both sides of the display screen 6. The display screen 6 can be used to display information such as battery level, battery cell status, and cover locking status. One of the buttons 7 is electrically connected to an electromagnet 38, and manual unlocking can be achieved through the button 7.

[0046] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A portable power supply, comprising a housing (1) and a battery cell (12), wherein the battery cell (12) is disposed inside the housing (1), characterized in that: The top of the housing (1) is provided with a cover (3), and the bottom of the cover (3) is provided with a middle cover (15). The middle cover (15) has a middle groove (19) in the middle, and a crank arm (20) is rotatably connected inside the middle groove (19). A torsion spring (24) is fixedly connected between the crank arm (20) and the inner wall of the middle groove (19), and the torsion spring (24) is coaxial with the crank arm (20). The curved arm (20) is rotatably connected to a first roller (25) at one end near the battery cell (12). A pressure groove (23) is provided on the top of the battery cell (12), and the rim of the first roller (25) is fitted into the inside of the pressure groove (23). The curved arm (20) has a toothed groove on the side away from the first roller (25), and a slider (21) is slidably connected inside the middle groove (19). A locking tooth (26) is fixedly connected to the side of the slider (21), and the locking tooth (26) meshes with the toothed groove of the curved arm (20). A limit switch (22) is fixedly connected to the inner wall of the middle groove (19), and the trigger part of the limit switch (22) is located on the side of the slider (21) away from the crank arm (20); An electromagnetic locking mechanism is provided between the housing (1) and the cover (3). The limit switch (22) is electrically connected to the electromagnetic locking mechanism. The electromagnetic locking mechanism includes an upper locking buckle (8), which is fixedly connected to the outer wall of the cover (3). A hook (36) is rotatably connected inside the upper locking buckle (8). A support plate (37) is fixedly connected to the inner wall of one side of the upper locking buckle (8). The same tension spring (39) is fixedly connected between the support plate (37) and the hook (36). An electromagnet (38) is fixedly connected to the side of the upper locking buckle (8) away from the support plate (37). A positioning block (43) is fixedly connected to the side of the hook (36) near the electromagnet (38). The positioning block (43) is made of iron. A lower locking buckle (9) is also provided. 9) The outer wall is fixedly connected with a threaded sleeve (40), and the threaded sleeve (40) is connected with a screw (41) by a thread. One end of the screw (41) extends into the interior of the lower latch (9), and the other end of the screw (41) is fixedly connected with a knob (42). The extended end of the screw (41) is on the rotation path of the hook (36). When the electromagnet (38) is energized, it attracts the iron positioning block (43), which overcomes the tension of the tension spring (39) and causes the hook (36) to disengage from the screw (41). When the shell cover (3) is closed, the hook (36) extends into the lower latch (9), the limit switch (22) is triggered, the electromagnet (38) is de-energized, the tension spring (39) is reset, and the hook (36) engages the screw (41), thus achieving the locking between the shell (1) and the shell cover (3).

2. The mobile power source of claim 1, wherein, The top of the battery cell (12) is fixedly connected to a partition plate (28), the top of the partition plate (28) is fixedly connected to a guide rail (29), both ends of the guide rail (29) are slidably connected to a sliding sleeve (30), the same spring plate (31) is fixedly connected between the two sliding sleeves (30), the spring plate (31) is set as an arc shape with a central protrusion, the top of the two sliding sleeves (30) is provided with a protrusion, the sliding sleeve (30) is located between the two protrusions, the bottom of the pressure groove (23) is provided with a slot (35), and the middle part of the spring plate (31) is engaged in the inside of the slot (35).

3. The mobile power source of claim 1, wherein, An impact pad (32) is fixedly connected to the middle of the slider (21) near the limit switch (22), and the impact pad (32) is correspondingly engaged with the trigger part of the limit switch (22).

4. The mobile power source of claim 1, wherein, Two second rollers (27) are fixedly connected to both sides of the slider (21). The two second rollers (27) located on the same side of the slider (21) are respectively attached to the two sides of the middle cover (15). The cover body of the middle cover (15) has four wheel grooves (34), and the wheel rims of the four second rollers (27) are respectively fitted into the interior of the four wheel grooves (34).

5. The mobile power source of claim 1, wherein, The bottom inner wall of the housing (1) is fixedly connected to a base (14), which is made of thermally conductive modified plastic. The battery cell (12) is fixedly connected to the top of the base (14). The four corners of the bottom outer wall of the housing (1) are fixedly connected to support feet (2), which are made of rubber.

6. A portable power bank according to claim 1, characterized in that, The outer periphery of the middle cover (15) is fixedly connected to a side ring (33). The side ring (33) is set as a closed rectangular ring structure. The four corners of the top of the side ring (33) are fixedly connected to insert rods (17). The four corners of the bottom of the shell cover (3) are fixedly connected to sleeves (16). The four insert rods (17) are respectively inserted into the interior of the four sleeves (16). The inner walls on both sides of the shell cover (3) are fixedly connected to limit blocks (18). The two limit blocks (18) are respectively slidably connected to the two sides of the side ring (33).

7. A portable power bank according to claim 1, characterized in that, A power interface (13) is provided on one side of the battery cell (12). The power interface (13) extends to the outside of the housing (1). The part of the power interface (13) located outside the housing (1) is fitted with a protective sleeve (10). The outer wall of the protective sleeve (10) is provided with a protrusion (11).

8. A portable power bank according to claim 1, characterized in that, The outer wall of the top of the shell cover (3) is fixedly connected to a storage groove (4), and a handle (5) is rotatably connected inside the storage groove (4).

9. A portable power bank according to claim 6, characterized in that, The top of the cover (3) is fixedly connected to a display screen (6), and buttons (7) are symmetrically distributed on both sides of the display screen (6).

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