Explosion-proof rechargeable battery with two constant voltage output paths

Abstract

The utility model discloses an explosion-proof rechargeable battery with two constant-voltage output paths. The explosion-proof rechargeable battery comprises an insulating sheath, a conductive barrel, a battery core body, an explosion-proof sheet, a circuit board, a connecting cap and a plugging port, the explosion-proof sheet is arranged in the mounting cavity and blocks the opening of the mounting cavity; a cutting mark is concavely arranged on the surface of the anti-explosion sheet; when the internal pressure of the mounting cavity is too large, the explosion-proof sheet is snapped to disconnect the circuit, then the shear mark on the explosion-proof sheet is broken, the pressure is released from the broken part of the explosion-proof sheet, the battery explosion is prevented, the connecting cap is a first output path of the battery, and the plugging port is arranged in the connecting cap and is electrically connected with the circuit board. The plugging port is exposed out of the outer side wall of the connecting cap; the plug interface serves as a charging path of the battery and also serves as a second output path of the battery; the constant-voltage chip arranged on the circuit board can ensure the input of the battery, the stability of the output voltage and the stability of the working state of the battery.

Description

Technical Field

[0001] This utility model relates to the field of rechargeable batteries, and in particular to an explosion-proof rechargeable battery with two constant voltage output paths. Background Technology

[0002] A battery is a device that converts chemical energy into electrical energy. It contains an electrolyte solution and metal electrodes, forming a cup, tank, or other container or composite container that generates an electric current. It has a positive and a negative electrode. With technological advancements, the term "battery" now generally refers to any small device capable of generating electrical energy. Batteries are widely used in daily life; various electronic products require them to provide power, and the safety and functionality requirements for batteries are constantly increasing.

[0003] Existing batteries have a relatively limited function, only providing power to electronic products when installed in them, failing to meet diverse user needs. Furthermore, the presence of electrolyte decomposition gases within the sealed internal space can sometimes lead to excessive internal pressure during use. When this pressure becomes too high, existing batteries may explode due to the inability to effectively release the pressure, posing a significant safety hazard. Therefore, further improvements to the existing battery structure are necessary. Utility Model Content

[0004] In view of this, the present invention addresses the deficiencies of the existing technology and its main purpose is to provide an explosion-proof rechargeable battery with two constant voltage output paths, which can effectively solve the problems of existing batteries having limited functions, failing to meet the needs of more users, and posing a high risk of use.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An explosion-proof rechargeable battery with two constant voltage output paths includes an insulating outer sheath, a conductive cylinder, a battery cell, an explosion-proof sheet, a circuit board, a connecting cap, and a connector. The conductive cylinder is disposed within the insulating outer sheath and has an open mounting cavity at one end. The end of the conductive cylinder away from the opening of the mounting cavity protrudes from the insulating outer sheath, serving as one output electrode of the battery. The battery cell is disposed within the mounting cavity and immersed in electrolyte, with one electrode of the battery cell in conductive contact with the inner wall of the conductive cylinder. The explosion-proof sheet is disposed within the mounting cavity of the conductive cylinder and blocks the opening of the mounting cavity. An insulating seat is sandwiched between the explosion-proof sheet and the side wall of the mounting cavity. The explosion-proof sheet and the battery cell... The other electrode of the battery cell is electrically connected to the explosion-proof sheet, and the surface of the explosion-proof sheet is recessed with grooves. The circuit board is disposed in the insulating outer sheath and electrically connected to the explosion-proof sheet. A constant voltage chip connected to the circuit board is disposed on the circuit board. The circuit board is electrically connected to the conductive cylinder. The connecting cap is disposed on the insulating outer sheath and extends outward from the insulating outer sheath. The connecting cap is connected to the other electrode of the battery cell through the circuit board and the explosion-proof sheet. The connecting cap becomes the other electrode of the battery. The plug is disposed inside the connecting cap and electrically connected to the circuit board. The plug protrudes outward from the outer wall of the connecting cap. The plug becomes the charging path of the battery and also becomes the second output path of the battery.

[0007] As a preferred option, the conductive cylinder is a nickel-plated steel cylinder, and the connecting cap is a nickel-plated steel cylinder.

[0008] As a preferred embodiment, the insulating base includes a first mounting groove with an upper opening and a second mounting groove with a lower opening, the first mounting groove and the second mounting groove being connected; the explosion-proof sheet is disposed in the first mounting groove; the explosion-proof sheet is in contact with the positive electrode of the battery cell through a connecting bridge piece, the surface of the connecting bridge piece having a through groove.

[0009] As a preferred embodiment, the connecting bridge piece is located in the second mounting groove, and the explosion-proof plate protrudes outward toward the second mounting groove with a contact portion that contacts and communicates with the connecting bridge piece.

[0010] As a preferred option, the explosion-proof sheet and the circuit board are electrically connected via a first connector.

[0011] As a preferred option, the circuit board surface has vent holes corresponding to the positions of the explosion-proof sheet.

[0012] As a preferred embodiment, the opening end of the conductive cylinder is integrally formed into a connecting part, the circuit board is disposed on the insulating base and located in the mounting cavity, and the circuit board and the connecting part are electrically connected through a second connector.

[0013] As a preferred option, the extension direction of the connector is the same as the extension direction of the connector cap, and the connector extends outward beyond the outer end of the connector cap.

[0014] As a preferred option, an insulating sleeve is sandwiched between the plug and the connector cap.

[0015] As a preferred option, the interface is a Type-C interface.

[0016] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution:

[0017] An explosion-proof plate is installed in the mounting cavity and blocks the opening of the cavity. The surface of the explosion-proof plate has recessed grooves. This ensures that when the pressure inside the mounting cavity becomes too high, the explosion-proof plate will first break, disconnecting the circuit. Secondly, it will break through the grooves on the explosion-proof plate, releasing the pressure from the punctured area, preventing battery explosion and enhancing safety. The conductive cylinder has an insulating outer sheath protruding from its end away from the mounting cavity opening. The connector is located inside the connecting cap and electrically connected to the circuit board, with the connector protruding from the outer wall of the connecting cap. The battery has two outputs: the connecting cap is the first output path, and the connector is the charging path and also the second output path. No additional management circuitry is required. Not only can it be used like a regular battery, but it can also discharge and charge via the connector, functioning as a power bank. When a higher voltage is needed, the connector cap of another battery can be connected to the exposed insulating part of the conductive tube to conduct electricity, thus connecting the two batteries in series. This process can be repeated to achieve even higher voltages with multiple batteries connected in series. Connecting two batteries in parallel doubles the battery capacity, and so on, allowing for a larger discharge capacity. This enhances the battery's functionality and meets a wider range of user needs. Furthermore, the constant voltage chip on the circuit board ensures stable output and input voltages, guaranteeing stable battery operation.

[0018] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a preferred embodiment of the present utility model;

[0020] Figure 2 This is an exploded view of a preferred embodiment of the present invention;

[0021] Figure 3 This is a cross-sectional schematic diagram of a preferred embodiment of the present invention;

[0022] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0023] Figure 5 This is a three-dimensional structural diagram of the explosion-proof sheet in a preferred embodiment of the present invention.

[0024] Explanation of reference numerals in the attached diagram:

[0025] 10. Insulating outer sheath; 20. Conductive cylinder

[0026] 201. Mounting cavity; 21. Connecting part

[0027] 30. Battery cell body; 40. Explosion-proof sheet

[0028] 401. First mounting slot; 402. Second mounting slot

[0029] 403, through slot 41, insulating base

[0030] 42. Cut marks 43. Connecting bridge plates

[0031] 44. Contact part; 45. First connector

[0032] 50. Circuit board 501, vent hole

[0033] 51. Second connector 52. Constant voltage chip

[0034] 60. Connecting cap; 70. Plug interface

[0035] 71. Insulating sleeve. Detailed Implementation

[0036] Please refer to Figures 1 to 5 As shown, it illustrates the specific structure of a preferred embodiment of the present invention, including an insulating outer sheath 10, a conductive cylinder 20, a battery cell 30, an explosion-proof sheet 40, a circuit board 50, a connecting cap 60, and a plug-in interface 70.

[0037] The conductive cylinder 20 is disposed inside the insulating outer sheath 10. The conductive cylinder 20 has a mounting cavity 201 with one open end, and the mounting cavity 201 contains electrolyte. The end of the conductive cylinder 20 away from the opening of the mounting cavity 201 protrudes outward from the insulating outer sheath 10 and serves as one output electrode of the battery. In this embodiment, the conductive cylinder 20 is a nickel-plated steel cylinder. A connecting portion 21 is integrally formed inward from the open end of the conductive cylinder 20.

[0038] The battery cell 30 is disposed in the mounting cavity 201 and immersed in the electrolyte, and one electrode of the battery cell 30 is in contact with the inner wall of the conductive cylinder 20, thereby forming an electrode of the battery by exposing the portion of the conductive cylinder 20 with the insulating outer skin 10 exposed.

[0039] The explosion-proof plate 40 is disposed in the mounting cavity 201 of the conductive cylinder 20 and blocks the opening of the mounting cavity 201; an insulating seat 41 is sandwiched between the explosion-proof plate 30 and the side wall of the mounting cavity 201 to prevent the explosion-proof plate 40 from directly contacting the conductive cylinder 20 and causing a short circuit. The explosion-proof plate 40 is conductive to the other electrode of the battery cell 30. The surface of the explosion-proof plate 40 is recessed with a cut 42. When the internal pressure of the mounting cavity 201 is too high, the excessive pressure can break through the cut 42, thereby releasing the excessive pressure outward through the explosion-proof plate 40 and preventing the battery from exploding. In this embodiment, the cut 42 is recessed inward from the side of the explosion-proof plate 40 away from the battery cell 30, so that the side of the explosion-proof plate 40 close to the battery cell 30 is flat, preventing the explosion-proof plate 40 from being broken by a small internal pressure.

[0040] In this embodiment, the insulating base 41 includes a first mounting groove 401 with an upper opening and a second mounting groove 402 with a lower opening, and the first mounting groove 401 and the second mounting groove 402 are connected. The explosion-proof sheet 40 is disposed in the first mounting groove 401. The explosion-proof sheet 40 is in contact with the positive electrode of the battery cell 30 through a connecting bridge piece 43. The surface of the connecting bridge piece 43 has a through groove 403, which allows the internal pressure of the battery to pass through and reach the surface of the explosion-proof sheet 40. The connecting bridge piece 43 is located in the second mounting groove 402, and the explosion-proof sheet 40 has a contact portion 44 protruding outward toward the second mounting groove 402 to contact and communicate with the connecting bridge piece 43, thereby ensuring the connection process between the explosion-proof sheet 40 and the connecting bridge piece 43.

[0041] The circuit board 50 is disposed within the insulating outer sheath 10 and electrically connected to the explosion-proof sheet 40. A constant voltage chip 52 connected to the circuit board 50 is disposed on the circuit board 50. Through the processing of the constant voltage chip 52, the circuitry on the circuit board ensures that the battery input and output currents are at a constant voltage. The specific structure and working principle of the constant voltage chip 52 are existing technologies and will not be detailed here. The circuit board 50 is electrically connected to the conductive cylinder 20, allowing the circuit board 50 to be simultaneously connected to both the positive and negative terminals of the battery cell 30. In this embodiment, the explosion-proof sheet 40 and the circuit board 50 are electrically connected via a first connector 45. This first connector 45 provides some support to the circuit board 50, preventing short circuits caused by the explosion-proof sheet 40 and the circuit board 50 coming into contact. A vent hole 501 corresponding to the position of the explosion-proof sheet 40 is formed through the surface of the circuit board 50. This vent hole 501 is used to release the pressure emanating from the explosion-proof sheet 40. The circuit board 50 is disposed on the insulating base 41 and located in the mounting cavity 201. The circuit board 50 and the connecting part 21 are electrically connected through a second connector 51.

[0042] The connecting cap 60 is disposed on the insulating outer sheath 10 and extends outward from the insulating outer sheath 10. The connecting cap 60 is connected to the other electrode of the battery cell 30 through the circuit board 50 and the explosion-proof sheet 40, thereby forming the connecting cap 60 as the other electrode of the battery. In this embodiment, the connecting cap 60 is a nickel-plated steel cylinder.

[0043] The connector 70 is disposed inside the connector cap 60 and electrically connected to the circuit board 50. The connector 70 protrudes outward from the outer wall of the connector cap 60, serving as a charging path for the battery and a second output path. This allows for both external discharge and battery charging, enabling it to function as a power bank with enhanced functionality. In this embodiment, the extension direction of the connector 70 is the same as that of the connector cap 60, extending outward from the outer end of the connector cap 60. Similarly, in other embodiments, the connector 70 may also extend outward from the side wall of the connector cap 60, and the position of the connector 70 extending outward from the connector cap 60 is not limited. An insulating sleeve 71 is sandwiched between the connector 70 and the connector cap 60 to prevent short circuits caused by contact between the connector 70 and the connector cap 60. The connector 70 is a Type-C interface; however, it can also be a USB or Lightning interface, and the number of connectors 70 can be set to multiple according to actual needs.

[0044] The key design features of this invention are: an explosion-proof sheet is placed inside the mounting cavity and blocks its opening; the surface of the explosion-proof sheet has recessed grooves; this ensures that when the pressure inside the mounting cavity becomes too high, the explosion-proof sheet will first break, disconnecting the circuit, and then the grooves on the explosion-proof sheet will be punctured, releasing the pressure from the punctured area and preventing battery explosion, thus enhancing safety; the conductive tube has an insulating outer sheath protruding from the end furthest from the mounting cavity opening; and the connector is located inside the connecting cap and electrically connected to the circuit board, with the connector protruding from the outer wall of the connecting cap. The battery has two outputs: the connecting cap is the first output path, and the connector is the charging path and also the second output path; and no additional... The management circuitry allows the battery to function not only like a regular battery but also to discharge and charge via the connector, effectively turning it into a power bank. When a higher voltage is needed, the connector cap of another battery can be connected to the exposed insulating portion of the conductive tube, thus connecting the two batteries in series. This process can be repeated to achieve even higher voltages with multiple batteries connected in series. Connecting two batteries in parallel doubles the battery capacity, and so on, allowing for a larger discharge capacity. This enhances the battery's functionality and meets a wider range of user needs. Simultaneously, a constant voltage chip on the circuit board ensures stable input and output voltages, guaranteeing stable battery operation.

[0045] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. An explosion-proof rechargeable battery with two constant voltage output paths, characterized in that: The battery includes an insulating outer sheath, a conductive tube, a battery cell, an explosion-proof plate, a circuit board, a connecting cap, and a connector. The conductive tube is housed within the insulating outer sheath and has a mounting cavity with one open end. The end of the conductive tube away from the opening of the mounting cavity protrudes from the insulating outer sheath, serving as one output electrode of the battery. The battery cell is housed within the mounting cavity and immersed in electrolyte, with one electrode of the battery cell in contact with the inner wall of the conductive tube. The explosion-proof plate is housed within the mounting cavity of the conductive tube and blocks the opening of the mounting cavity. An insulating seat is sandwiched between the explosion-proof plate and the side wall of the mounting cavity, and the explosion-proof plate is in contact with the other electrode of the battery cell. The explosion-proof sheet has recessed grooves on its surface; the circuit board is disposed in the insulating outer sheath and electrically connected to the explosion-proof sheet, and a constant voltage chip connected to the circuit board is disposed on the circuit board; the circuit board is electrically connected to the conductive cylinder; the connecting cap is disposed on the insulating outer sheath and extends outward from the insulating outer sheath, and the connecting cap is connected to the other electrode of the battery cell through the circuit board and the explosion-proof sheet, and the connecting cap becomes the other electrode of the battery; the plug is disposed inside the connecting cap and electrically connected to the circuit board, and the plug protrudes outward from the outer wall of the connecting cap; the plug becomes the charging path of the battery and also becomes the second output path of the battery.

2. The explosion-proof secondary cell having a 2-way constant voltage output path according to claim 1, characterized by: The conductive cylinder is a nickel-plated steel cylinder, and the connecting cap is a nickel-plated steel cylinder.

3. The explosion-proof secondary cell having a 2-way constant voltage output path according to claim 1, characterized by: The insulating base includes a first mounting groove with an upper opening and a second mounting groove with a lower opening, and the first mounting groove and the second mounting groove are connected; the explosion-proof sheet is disposed in the first mounting groove; the explosion-proof sheet is in contact with the positive electrode of the battery cell through a connecting bridge piece, and the surface of the connecting bridge piece has a through groove.

4. The explosion-proof secondary cell having a 2-way constant-voltage output path according to claim 3, characterized by: The connecting bridge piece is located in the second mounting groove, and the explosion-proof piece protrudes outward toward the second mounting groove with a contact portion that contacts and communicates with the connecting bridge piece.

5. The explosion-proof secondary cell having a 2-way constant-voltage output path according to claim 1, characterized by: The explosion-proof sheet and the circuit board are electrically connected through a first connector.

6. The explosion-proof rechargeable battery with two constant voltage output paths according to claim 1, characterized in that: The circuit board surface has vent holes corresponding to the positions of the explosion-proof sheet.

7. The explosion-proof secondary cell having a 2-way constant-voltage output path according to claim 1, characterized by: The conductive cylinder has an integrally formed connecting part at its open end. The circuit board is mounted on an insulating base and located in the mounting cavity. The circuit board and the connecting part are electrically connected through a second connector.

8. The explosion-proof secondary cell having a 2-way constant-voltage output path according to claim 1, characterized by: The extension direction of the connector is the same as that of the connector cap, and the connector extends outward from the outer end of the connector cap.

9. The explosion-proof secondary cell having a 2-way constant-voltage output path according to claim 1, characterized by: An insulating sleeve is sandwiched between the plug and the connector cap.

10. The explosion-proof secondary cell having a 2-way constant-voltage output path according to claim 1, characterized by: The interface is a Type-C interface.

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