Magnetic type cascaded charging 14550 battery conversion device

Abstract

The utility model discloses a magnetic type cascaded charging 14550 battery conversion device, which comprises a shell, a charging port, a lithium battery charging and discharging PCB (Printed Circuit Board), an output voltage selection switch and a cascaded charging magnetic contact elastic sheet, the lithium battery charging and discharging PCB is provided with a lithium battery charging and discharging management chip, a synchronous step-down DC-DC converter chip, a positive electrode unit and a negative electrode unit; the charging port is connected with the lithium battery charging and discharging PCB; the output voltage selection switch is installed on the lithium battery charging and discharging PCB. The cascade charging magnetic attraction contact elastic sheet comprises a positive electrode contact elastic sheet and a negative electrode contact elastic sheet, the positive electrode contact elastic sheet is connected with the positive electrode unit, and the negative electrode contact elastic sheet is connected with the negative electrode unit; the positive contact elastic sheet and the negative contact elastic sheet are respectively provided with a contact end, and magnets are arranged on the contact ends. The battery conversion device can charge a plurality of batteries at the same time in a magnetic attraction cascade mode; and a 10440 rechargeable lithium battery can be converted into a 14550 battery for use, and the switching of the output voltage of the battery can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of battery conversion products, in particular to a magnetic adsorption type cascading charging 14550 battery conversion device. Background Art

[0002] In daily life, 14550 batteries with a DC 1.5V voltage output are often used in toys, electronic devices, instruments and meters, and are an indispensable battery type in people's daily life. However, traditional dry batteries do not have a charging function, and can only be discarded after the power is exhausted.

[0003] With the development of lithium batteries, lithium batteries of various sizes have been manufactured. However, lithium batteries usually have an output voltage between 3.6V and 4.7V and cannot directly replace commonly used 1.5V dry batteries. The 10440 to 14550 battery converter on the market can only convert the 10440 battery size into the size of a 1.5V dry battery, and cannot achieve rechargeable and reusable functions. Therefore, the existing battery converter should be improved to design a conversion device that can not only perform size conversion, but also be rechargeable and reusable. Summary of the Utility Model

[0004] In view of this, in view of the deficiencies of the existing technology, the main purpose of the present utility model is to provide a magnetic adsorption type cascading charging 14550 battery conversion device, which integrates a charging port, a lithium battery charge and discharge PCB board, an output voltage selection switch and a cascading charging magnetic contact elastic sheet in a housing to form a battery conversion device. The battery conversion device can simultaneously charge multiple batteries in a magnetic adsorption cascading manner; and can convert a 10440 rechargeable lithium battery into a 14550 battery for use, and can realize the switching of the battery output voltage through the output voltage selection switch.

[0005] To achieve the above purpose, the present utility model adopts the following technical solutions:

[0006] A magnetic adsorption type cascading charging 14550 battery conversion device, which comprises a housing, a charging port, a lithium battery charging and discharging PCB board, an output voltage selection switch and a cascading charging magnetic adsorption contact elastic sheet. The interior of the housing has a first accommodating space for installing a 10440 rechargeable lithium battery and a second accommodating space for installing the lithium battery charging and discharging PCB board. The lithium battery charging and discharging PCB board is provided with a lithium battery charging and discharging management chip, a synchronous buck DC-DC converter chip, a positive electrode unit and a negative electrode unit. The charging port is connected to the lithium battery charging and discharging PCB board and is exposed outside the housing. The output voltage selection switch is installed on the lithium battery charging and discharging PCB board and extends outside the housing. The cascading charging magnetic adsorption contact elastic sheet comprises a positive electrode contact elastic sheet and a negative electrode contact elastic sheet. The positive electrode contact elastic sheet is connected to the positive electrode unit, and the negative electrode contact elastic sheet is connected to the negative electrode unit. The positive electrode contact elastic sheet and the negative electrode contact elastic sheet respectively have contact ends exposed outside the housing, and magnets are arranged on the contact ends.

[0007] As a preferred scheme: the cascading charging magnetic adsorption contact elastic sheet comprises two positive electrode contact elastic sheets and two negative electrode contact elastic sheets. The rear ends of the two positive electrode contact elastic sheets are symmetrically connected to the positive electrode unit, and the contact ends of the two positive electrode contact elastic sheets are symmetrically distributed on both sides of the housing. The rear ends of the two negative electrode contact elastic sheets are symmetrically connected to the negative electrode unit, and the contact ends of the two negative electrode contact elastic sheets are symmetrically distributed on both sides of the housing. The positive electrode contact elastic sheet and the negative electrode contact elastic sheet on the same side are horizontally opposite to each other, and the contact ends of the positive electrode contact elastic sheet and the negative electrode contact elastic sheet on the same side are located on a straight line. An extension hole is arranged on the housing corresponding to the magnet on the contact end, and the magnet is embedded in the extension hole.

[0008] As a preferred scheme: the interior of the housing has a lining piece, and the lining piece divides the interior of the housing into the first accommodating space and the second accommodating space. The first accommodating space is located above the second accommodating space.

[0009] As a preferred scheme: an elastic sheet accommodating area for accommodating the positive electrode contact elastic sheet and the negative electrode contact elastic sheet is formed between the lining piece and the inner side walls on both sides of the housing.

[0010] As a preferred scheme: a positive electrode installation area for accommodating the positive electrode unit is formed between the upper end of the lining piece and the inner side top wall of the housing, and a negative electrode installation area for accommodating the negative electrode unit is formed between the lower end of the lining piece and the inner side bottom wall of the housing.

[0011] As a preferred scheme: an embedding groove for accommodating the charging port is arranged at the upper end of the housing.

[0012] As a preferred solution: the positive contact elastic piece and the negative contact elastic piece respectively include an elastic piece and the contact end, and the contact end is located at the end of the elastic piece; a receiving cover is arranged at the contact end, the magnet is located in the receiving cover, and the receiving cover is exposed outside the housing through the protruding hole.

[0013] As a preferred solution: an elastic avoidance section is arranged on the elastic piece close to the contact end and towards the inner side of the housing.

[0014] As a preferred solution: a planar fitting portion for tightly fitting the cascade batteries is horizontally arranged on the outer wall of the housing corresponding to the position of the magnet.

[0015] As a preferred solution: an adjustment hole for adjusting the length of the magnet protruding outside the housing is arranged on the inner lining corresponding to the magnet.

[0016] Compared with the prior art, the present utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solutions, by integrating the charging port, the lithium battery charging and discharging PCB board, the output voltage selection switch, and the cascade charging magnetic contact elastic piece into the housing to form a battery conversion device, the battery conversion device has the following advantages:

[0017] First, multiple battery conversion housings can be used to charge multiple batteries simultaneously in a magnetic cascade manner;

[0018] Second, the 10440 rechargeable lithium battery can be converted into a 14550 battery for use;

[0019] Third, the output voltage of the battery can be switched through the output voltage selection switch, and two voltages of 1.5V and 3V can be output;

[0020] Fourth, the magnetic elastic piece can be made to carry 5V electricity through the switching of the output voltage selection switch, thereby realizing cascade charging; charging is convenient by using the TypeC USB interface.

[0021] To more clearly illustrate the structural features and functions of the present utility model, the following will be a detailed description thereof in combination with the drawings and specific embodiments. Description of the Drawings

[0022] Figure 1 It is a three-dimensional schematic diagram of the conversion device of the present utility model;

[0023] Figure 2 It is another three-dimensional schematic diagram of the conversion device of the present utility model from a different perspective;

[0024] Figure 3 It is a three-dimensional schematic diagram of the conversion device of the present utility model with the battery installed inside;

[0025] Figure 4Exploded perspective view of the conversion device of the present utility model;

[0026] Figure 5 Another perspective exploded perspective view of the conversion device of the present utility model;

[0027] Figure 6 Perspective view of the main body part of the conversion device of the present utility model;

[0028] Figure 7 Perspective view of the housing of the conversion device of the present utility model;

[0029] Figure 8 Perspective view of the cascaded state of two batteries of the present utility model;

[0030] Figure 9 Schematic diagram of the circuit principle of the present utility model.

[0031] Explanation of the reference numerals in the drawings:

[0032] 10. Housing; 11. First accommodation space; 12. Second accommodation space; 13. Protrusion hole; 14. Lining member; 141. Adjustment hole; 15. Elastic sheet accommodation area; 16. Positive electrode installation area; 17. Negative electrode installation area; 18. Embedded groove; 19. Plane fitting part; 20. Charging port; 30. Lithium battery charge and discharge PCB board; 31. Lithium battery charge and discharge management chip; 32. Synchronous buck DC-DC converter chip; 33. Positive electrode unit; 34. Negative electrode unit; 35. Indicator light; 40. Output voltage selection switch; 50. Cascaded charging magnetic contact elastic sheet; 51. Positive electrode contact elastic sheet; 52. Negative electrode contact elastic sheet; 53. Contact end; 531. Accommodation cover; 54. Magnet; 55. Elastic sheet; 551. Elastic avoidance section; 60. Battery. Detailed implementation manners

[0033] As shown in the present utility model Figures 1 to 9 A magnetic-attraction type cascaded chargeable 14550 battery conversion device includes a housing 10, a charging port 20, a lithium battery charge and discharge PCB board 30, an output voltage selection switch 40, and a cascaded charging magnetic contact elastic sheet 50, wherein:

[0034] Inside the housing 10, there is a first accommodation space 11 for installing the rechargeable lithium battery 60 (model 10440) and a second accommodation space 12 for installing the lithium battery charge and discharge PCB board 30. The lithium battery charge and discharge PCB board 30 is installed in the second accommodation space 12. On the lithium battery charge and discharge PCB board 30, there are a lithium battery charge and discharge management chip 31 (model ESOP8), a synchronous buck DC-DC converter chip 32 (model SOT23-5), a positive electrode unit 33, a negative electrode unit 34, and an indicator light 35 for displaying the charging status, fully charged status, and battery level; the charging port 20 is connected to the lithium battery charge and discharge PCB board 30 and exposed outside the housing 10. The charging port 20 is a Type-C USB charging port 20; the output voltage selection switch 40 is installed on the lithium battery charge and discharge PCB board 30, and its toggling part extends outside the housing 10.

[0035] The cascading charging magnetic contact elastic piece 50 includes a positive electrode contact elastic piece 51 and a negative electrode contact elastic piece 52. The positive electrode contact elastic piece 51 is connected to the positive electrode unit 33, and the negative electrode contact elastic piece 52 is connected to the negative electrode unit 34; and the positive electrode contact elastic piece 51 and the negative electrode contact elastic piece 52 respectively have contact ends 53 exposed outside the housing 10, and magnets 54 are provided on the contact ends 53.

[0036] In this embodiment, the cascading charging magnetic contact elastic piece 50 includes two positive electrode contact elastic pieces 51 and two negative electrode contact elastic pieces 52. The rear ends of the two positive electrode contact elastic pieces 51 are symmetrically connected to the positive electrode unit 33, and the contact ends 53 of the two positive electrode contact elastic pieces 51 are symmetrically distributed on both sides of the housing 10; the rear ends of the two negative electrode contact elastic pieces 52 are symmetrically connected to the negative electrode unit 34, and the contact ends 53 of the two negative electrode contact elastic pieces 52 are symmetrically distributed on both sides of the housing 10; and the positive electrode contact elastic piece 51 and the negative electrode contact elastic piece 52 on the same side are horizontally opposite to each other, and the contact ends 53 of the positive electrode contact elastic piece 51 and the negative electrode contact elastic piece 52 on the same side are located on a straight line; on the housing 10, there are through holes 13 corresponding to the magnets 54 on the contact ends 53, and the magnets 54 are embedded in the through holes 13; the symmetrical distribution of the two positive electrode contact elastic pieces 51 and the two negative electrode contact elastic pieces 52 is mainly for cascading multiple batteries.

[0037] The positive contact elastic piece 51 and the negative contact elastic piece 52 respectively include an elastic piece 55 and the contact end 53. The contact end 53 is located at the end of the elastic piece 55. A receiving cover 531 is provided at the contact end 53. The magnet 54 is located in the receiving cover 531. The receiving cover 531 is exposed outside the housing 10 through the protruding hole 13. Installing the magnet 54 in the receiving cover 531 can prevent the magnet 54 from being adsorbed and separated from the housing 10 by the magnet 54 on another device during battery cascading. An elastic avoidance section 551 is provided on the elastic piece 55 close to the contact end 53 and extends towards the inner side of the housing 10. The elastic piece 55 provides an elastic force for the contact end 53, enabling the magnet 54 thereon to elastically float relative to the housing 10. The elastic avoidance section 551 keeps the magnet 54 always inside the protruding hole 13, preventing the magnet 54 from protruding too much outside the protruding hole 13 and providing a driving force for the rebound of the magnet 54.

[0038] There is a lining member 14 inside the housing 10. The lining member 14 divides the interior of the housing 10 into the first accommodation space 11 and the second accommodation space 12. The first accommodation space 11 is located above the second accommodation space 12. An elastic piece accommodation area 15 for accommodating the positive contact elastic piece 51 and the negative contact elastic piece 52 is formed between the lining member 14 and the inner side walls of both sides of the housing 10. The elastic piece accommodation area 15 provides space for the installation of the positive contact elastic piece 51 and the negative contact elastic piece 52 on the one hand, and on the other hand, its narrow space structure limits the elastic swing amplitude of the positive contact elastic piece 51 and the negative contact elastic piece 52. A positive electrode installation area 16 for accommodating the positive electrode unit 33 is formed between the upper end of the lining member 14 and the inner top wall of the housing 10. A negative electrode installation area 17 for accommodating the negative electrode unit 34 is formed between the lower end of the lining member 14 and the inner bottom wall of the housing 10. An embedding groove 18 for accommodating the charging port 20 is provided at the upper end of the housing 10. By providing the above-mentioned multiple accommodation spaces, accommodation areas, and installation areas inside the housing 10, the components of the device are reasonably distributed, achieving an external dimension identical to that of a 14550 dry battery.

[0039] An adjustment hole 141 for adjusting the length of the magnet 54 protruding outside the housing 10 is provided on the lining member 14 corresponding to the magnet 54. When the magnetic suction force is insufficient during cascading batteries due to the magnet 54 being located at the bottom of the protruding hole 13, a tool can be used to push the magnet 54 outwards through the adjustment hole 141, so that the magnet 54 is exposed outside the housing 10 for the mutual adsorption between cascading batteries.

[0040] In addition, a planar fitting portion 19 for making the cascading batteries fit closely is transversely provided on the outer wall of the housing 10 at the position corresponding to the magnet 54. The setting of the planar fitting portion 19 enables the cascading batteries to achieve planar fitting, increasing the mutual contact area and improving the electrical contact stability between the charging magnetic contact elastic pieces 50 during cascading charging.

[0041] According to the defects existing in the traditional conversion shell for converting 10440 rechargeable lithium batteries into 14550 batteries, the purpose of the present utility model is to provide a new magnetic adsorption cascade charging 10440 to 14550 battery conversion scheme by converting 10440 rechargeable lithium batteries into 14550 battery size and outputting a voltage of 1.5V. This scheme realizes:

[0042] (1) Convert the rechargeable 10440 lithium battery into a 14550-sized battery and achieve an output voltage of 1.5V or 3V. (2) The cascade charging magnetic adsorption contact elastic pieces 50 on both sides of the conversion device have positive and negative contact elastic pieces 52, which can realize the cascade charging of multiple battery conversion devices by magnetic adsorption, and can charge multiple batteries through the Type-C USB charging port 20 of any one battery conversion device. (3) The battery can be charged by using the Type-C USB charging port 20. (4) Use the lithium battery charge and discharge management chip 31 to manage the charging and discharging of the lithium battery, output a DC 5V voltage, and then convert the DC 5V voltage into a DC 1.5V voltage output or a DC 3V voltage output through the synchronous buck DC-DC converter chip 32. (5) Use the output voltage selection switch 40 to realize the switching of the output DC 1.5V, 3V and cascade charging states.

[0043] The external dimensions of the battery conversion device are the same as those of ordinary 14550 dry batteries, and a 10440 rechargeable lithium battery 60 can be placed inside its first accommodating space 11. The cascade charging magnetic adsorption contact elastic pieces 50 on both sides of the battery conversion device are used for the cascade of multiple battery conversion devices; the conversion device is charged by the Type-C USB charging port 20; the lithium battery charge and discharge PCB board 30 has a lithium battery charge and discharge management chip 31 and can output a DC 5V voltage, and then convert the DC 5V voltage into a DC 1.5V voltage output or a DC 3V voltage output through the synchronous buck DC-DC converter chip 32; the output voltage selection switch 40 is a double-pole triple-throw output voltage selection switch 40, which is used to realize the switching of two voltages of 1.5V and 3V and the cascade charging state.

[0044] The design focus of the present utility model is to integrate the charging port, the lithium battery charge and discharge PCB board, the output voltage selection switch and the cascade charging magnetic adsorption contact elastic pieces into the shell to form a battery conversion device, and this battery conversion device has the following advantages:

[0045] First, multiple battery conversion devices can be used to charge multiple batteries simultaneously by magnetic adsorption cascade;

[0046] Second, the 10440 rechargeable lithium battery can be converted into a 14550 battery for use;

[0047] Thirdly, the output voltage of the battery can be switched by an output voltage selection switch, and two voltages of 1.5V and 3V can be output;

[0048] Fourthly, the cascading charging magnetic contact elastic sheet can be switched to have a DC 5V voltage through the output voltage selection switch, so as to realize cascading charging; charging is convenient by using a Type-C USB interface.

[0049] The above are only the preferred embodiments of the present invention, and do not impose any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A magnetic adsorption type cascading chargeable 14550 battery conversion device, characterized in that: It includes a housing, a charging port, a lithium battery charge and discharge PCB board, an output voltage selection switch, and a cascading charging magnetic contact elastic piece. Inside the housing, there is a first accommodating space for installing a 10440 rechargeable lithium battery and a second accommodating space for installing the lithium battery charge and discharge PCB board. On the lithium battery charge and discharge PCB board, there are a lithium battery charge and discharge management chip, a synchronous buck DC-DC converter chip, a positive electrode unit, and a negative electrode unit. The charging port is connected to the lithium battery charge and discharge PCB board and is exposed outside the housing. The output voltage selection switch is installed on the lithium battery charge and discharge PCB board and extends outside the housing. The cascading charging magnetic contact elastic piece includes a positive electrode contact elastic piece and a negative electrode contact elastic piece. The positive electrode contact elastic piece is connected to the positive electrode unit, and the negative electrode contact elastic piece is connected to the negative electrode unit. The positive electrode contact elastic piece and the negative electrode contact elastic piece respectively have contact ends exposed outside the housing, and magnets are provided on the contact ends.

2. The magnetic adsorption type cascade chargeable 14550 battery conversion device according to claim 1, characterized in that: The cascading charging magnetic contact elastic piece includes two positive electrode contact elastic pieces and two negative electrode contact elastic pieces. The rear ends of the two positive electrode contact elastic pieces are symmetrically connected to the positive electrode unit, and the contact ends of the two positive electrode contact elastic pieces are symmetrically distributed on both sides of the housing. The rear ends of the two negative electrode contact elastic pieces are symmetrically connected to the negative electrode unit, and the contact ends of the two negative electrode contact elastic pieces are symmetrically distributed on both sides of the housing. The positive electrode contact elastic piece and the negative electrode contact elastic piece on the same side are horizontally opposite to each other, and the contact ends of the positive electrode contact elastic piece and the negative electrode contact elastic piece on the same side are located on a straight line. On the housing, there are protruding holes corresponding to the magnets on the contact ends, and the magnets are embedded in the protruding holes.

3. The magnetic adsorption type cascading chargeable 14550 battery conversion device according to claim 1, characterized in that: Inside the housing, there is a lining piece. The lining piece divides the inside of the housing into the first accommodating space and the second accommodating space. The first accommodating space is located above the second accommodating space.

4. The magnetic attraction type cascading chargeable 14550 battery conversion device according to claim 3, characterized in that: An elastic piece accommodating area for accommodating the positive electrode contact elastic piece and the negative electrode contact elastic piece is formed between the lining piece and the inner side walls of both sides of the housing.

5. The magnetic adsorption type cascade chargeable 14550 battery conversion device according to claim 3, wherein: A positive electrode installation area for accommodating the positive electrode unit is formed between the upper end of the lining piece and the inner side top wall of the housing, and a negative electrode installation area for accommodating the negative electrode unit is formed between the lower end of the lining piece and the inner side bottom wall of the housing.

6. The magnetic adsorption type cascading chargeable 14550 battery conversion device according to claim 1, characterized in that: An embedding groove for accommodating the charging port is provided at the upper end of the housing.

7. The magnetic adsorption type cascading chargeable 14550 battery conversion device according to claim 2, characterized in that: The positive electrode contact elastic piece and the negative electrode contact elastic piece respectively include an elastic piece and the contact end. The contact end is located at the end of the elastic piece. A accommodating cover is provided at the contact end, the magnet is located in the accommodating cover, and the accommodating cover is exposed outside the housing through the protruding hole.

8. The magnetic adsorption type cascading chargeable 14550 battery conversion device according to claim 7, characterized in that: An elastic avoidance section is provided on the elastic piece near the contact end and extends towards the inside of the housing.

9. The magnetic adsorption type cascading rechargeable 14550 battery conversion device according to claim 1, characterized in that: A plane fitting portion for making the cascading batteries fit tightly is horizontally provided on the outer wall of the housing corresponding to the position of the magnet.

10. The magnetic-attraction type cascade chargeable 14550 battery conversion device according to claim 3, wherein: An adjusting hole for adjusting the length of the magnet protruding outside the housing is provided on the lining piece corresponding to the magnet.

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