Short circuit prevention output device of storage battery

Abstract

The utility model discloses an anti-short-circuit output device of a storage battery. The anti-short-circuit output device comprises a storage battery outer cover, an insulating protective sleeve, a lead tail section, a connecting part and a lead front section, the other end of the lead front section is provided with a thread mounting part protruding along the radial direction; a threaded blind hole part and a mounting hole part which are axially communicated are arranged on the upper surface of the storage battery outer cover; the threaded blind hole part is in threaded connection with the threaded mounting part, and a storage battery output end is arranged in the threaded blind hole part; and an insulating cover covers the mounting hole part. According to the utility model, the threaded mounting part at the front section of the lead is in threaded connection with the threaded blind hole part on the outer cover of the storage battery, so that the lead can be detachably connected with the output end of the storage battery, the lead and the storage battery are convenient to disassemble, the lead is convenient to replace and maintain, and the use convenience is improved. Meanwhile, the joint of the front section of the lead and the threaded blind hole part of the outer cover of the storage battery is insulated from the outside through the insulating cover, so that the use safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of solar energy storage batteries, in particular to a short-circuit prevention output device for a storage battery. Background Technique

[0002] A solar cell, also known as a solar chip or a photovoltaic cell, is a thin photoelectric semiconductor sheet that directly generates electricity using sunlight. As long as it is irradiated by light with a certain illumination condition, it can instantaneously output voltage and generate current in the case of a loop, which is called solar photovoltaics, abbreviated as PV in physics. A solar energy storage battery is a device that directly converts light energy into electrical energy through the photovoltaic effect or the photochemical effect. Currently, the storage batteries used in solar street lamps generally adopt lead wire output, which is convenient for installation. During the transportation and installation of the storage battery, due to various reasons, the positive and negative poles of the storage battery are short-circuited, burning out the lead wires of the storage battery, resulting in the storage battery being unable to be used. Even after replacing the lead wires, the inside of the storage battery is also affected by the impact of large current. If the short circuit of the storage battery occurs during transportation, it is very likely to cause a fire, posing a safety hazard.

[0003] In the prior art, Chinese Patent CN205319221U discloses a short-circuit prevention output device for a storage battery. This device can prevent the positive and negative poles of the storage battery from being short-circuited. However, this device requires welding the front end of the lead wire to the output end of the solar energy storage battery. When the front end of the lead wire is damaged or needs to be replaced and maintained, the disassembly process of the welding part is time-consuming and laborious, and it is easy to damage the output end of the storage battery, making it very inconvenient to use. Content of the Utility Model

[0004] In order to solve the above problems existing in the prior art, the utility model provides a short-circuit prevention output device for a storage battery and a circuit breaker structure. The technical problems to be solved by the utility model are realized through the following technical solutions:

[0005] An embodiment of the utility model provides a short-circuit prevention output device for a storage battery, including: a storage battery outer cover, an insulating protection sleeve, a tail section of the lead wire, a connection part, and a front section of the lead wire;

[0006] The insulating protection sleeve is sleeved on one end of the tail section of the lead wire;

[0007] The other end of the tail section of the lead wire is fixedly connected to the connection part;

[0008] The connection part is fixedly connected to one end of the front section of the lead wire, and a short-circuit insurance structure is arranged inside;

[0009] The tail section of the lead wire is detachably connected to the front section of the lead wire through the connection part;

[0010] The other end of the front section of the lead wire is provided with a radially protruding threaded installation part;

[0011] An axially communicating threaded blind hole portion and a mounting hole portion are provided on the upper surface of the battery cover;

[0012] The threaded blind hole portion and the mounting hole portion form a stepped hole structure, and the inner diameter of the threaded blind hole portion is smaller than the inner diameter of the mounting hole portion. The threaded blind hole portion is located below the mounting hole portion;

[0013] The threaded blind hole portion is threadedly connected to the threaded mounting portion, and a battery output terminal is provided in the threaded blind hole portion;

[0014] An insulating cover is provided on the mounting hole portion, the insulating cover is snap-connected to the mounting hole portion, and the insulating cover is snap-connected to the end face of the threaded mounting portion;

[0015] The front section of the lead wire passes through the insulating cover and is hermetically connected to the insulating cover.

[0016] In an embodiment of the present invention, at least one axially extending slot is provided on the inner wall of the mounting hole portion;

[0017] A snap connection portion cooperating with the slot is provided on the edge of the insulating cover facing the threaded blind hole portion;

[0018] The snap connection portion extends away from the cover surface of the insulating cover, and the snap connection portion is inserted into the slot.

[0019] In an embodiment of the present invention, a jack is provided on the end face of the threaded mounting portion;

[0020] A plug inserted into the jack is provided on the surface of the insulating cover facing the threaded blind hole portion.

[0021] In an embodiment of the present invention, the short-circuit protection structure includes: a support spring, a fuse, a partition plate, and an isolation spring;

[0022] One end of the support spring is fixedly connected to one end inside the connection portion, and the other end is fixedly connected to one end of the fuse;

[0023] The other end of the fuse is connected to the front section of the lead wire inside the connection portion;

[0024] The partition plate is located on one side of the fuse, and one end faces the fuse and abuts against the fuse;

[0025] One end of the isolation spring abuts against the inner side wall of the connection portion, and the other end abuts against the other end of the partition plate.

[0026] In an embodiment of the present utility model, a warning light is provided on the side wall of the connecting portion, and a switching circuit is further provided inside the connecting portion;

[0027] The switching circuit is electrically connected to the warning light;

[0028] The switch of the switching circuit can be in contact with one end of the partition board.

[0029] Advantages of the present utility model:

[0030] In the present utility model, the threaded mounting portion at the front section of the lead wire is threadedly connected to the threaded blind hole portion on the outer cover of the storage battery, so that the lead wire can be detachably connected to the output end of the storage battery, facilitating the disassembly of the lead wire from the storage battery, and further facilitating the replacement and maintenance of the lead wire, improving the convenience of use. At the same time, the connection between the front section of the lead wire and the threaded blind hole portion of the outer cover of the storage battery is insulated from the outside through an insulating cover, improving the safety of use.

[0031] Other features and advantages of the present utility model will be described in the following description, and some will be obvious from the description or understood by implementing the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained through the structures specifically pointed out in the written description, claims, and drawings.

[0032] The technical solution of the present utility model will be further described in detail below through the drawings and embodiments. Description of the Drawings

[0033] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the description. They are used together with the embodiments of the present utility model to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0034] Figure 1 is a schematic structural diagram of a short-circuit prevention output device for a storage battery provided by an embodiment of the present utility model;

[0035] Figure 2 is a schematic structural diagram of a lead wire provided by an embodiment of the present utility model;

[0036] Figure 3 is a top view of an outer cover of a storage battery provided by an embodiment of the present utility model;

[0037] Figure 4 is a schematic structural diagram of an insulating cover provided by an embodiment of the present utility model;

[0038] Figure 5 is a schematic cross-sectional structural diagram of the front section of a lead wire provided by an embodiment of the present utility model;

[0039] Figure 6This is the structural diagram of the short - circuit insurance structure provided by the embodiment of the present utility model.

[0040] Explanation of reference numerals:

[0041] 10 - Battery outer cover; 11 - Threaded blind hole part; 12 - Mounting hole part; 13 - Slot; 20 - Insulating protective sleeve; 30 - Tail section of lead; 40 - Connecting part; 50 - Front section of lead; 51 - Threaded mounting part; 52 - Jack; 60 - Insulating cover; 61 - Clamping part; 62 - Plug; 70 - Support spring; 71 - Fuse; 72 - Partition board; 73 - Isolation spring; 80 - Switch. Specific embodiments

[0042] The following further describes the present utility model in detail with reference to specific embodiments, but the implementation manners of the present utility model are not limited thereto.

[0043] As Figure 1 shown, the embodiment of the present utility model provides a battery short - circuit prevention output device, including: a battery outer cover 10, an insulating protective sleeve 20, a tail section of lead 30, a connecting part 40, and a front section of lead 50.

[0044] The insulating protective sleeve 20 is sleeved on one end of the tail section of lead 30, and the other end of the tail section of lead 30 is fixedly connected to the connecting part 40. The connecting part 40 is fixedly connected to one end of the front section of lead 50, and a short - circuit insurance structure is arranged inside the connecting part 40. When a short - circuit occurs between the positive and negative electrodes of the battery, the short - circuit insurance structure can disconnect the short - circuited circuit to prevent the further propagation of the short - circuit current. The tail section of lead 30 is detachably connected to the front section of lead 50 through the connecting part 40.

[0045] The other end of the front section 50 of the lead wire is provided with a radially protruding threaded mounting portion 51. On the upper surface of the battery outer cover 10, there are axially communicating threaded blind hole portions 11 and mounting hole portions 12. The threaded blind hole portion 11 and the mounting hole portion 12 form a stepped hole structure, and the inner diameter of the threaded blind hole portion 11 is smaller than that of the mounting hole portion 12, and the threaded blind hole portion 11 is located below the mounting hole portion 12. The threaded blind hole portion 11 of the stepped hole structure is the smaller hole, and the mounting hole portion 12 is the larger hole. The threaded blind hole portion 11 is threadedly connected to the threaded mounting portion 51, and a battery output terminal is arranged in the threaded blind hole portion 11. The threaded mounting portion 51 of the front section 50 of the lead wire is threadedly connected to the threaded blind hole portion 11 on the battery outer cover 10, so that the lead wire can be detachably connected to the battery output terminal, facilitating the disassembly of the lead wire from the battery, and further facilitating the replacement and maintenance of the lead wire, improving the convenience of use. An insulating cover 60 is provided on the mounting hole portion 12, and the insulating cover 60 is snap-connected to the mounting hole portion 12 and is snap-connected to the end face of the threaded mounting portion 51; the front section 50 of the lead wire passes through the insulating cover 60 and is hermetically connected to the insulating cover 60. The connection between the front section 50 of the lead wire and the threaded blind hole portion 11 of the battery outer cover 10 is insulated from the outside through the insulating cover 60, improving the safety of use. At the same time, the insulating cover 60 is snap-connected to the mounting hole portion 12 and the threaded mounting portion 51, so that the threaded mounting portion 51 is further limited. Therefore, the threaded mounting portion 51 is not easily loosened, improving the reliability of the connection and further improving the reliability and safety of use.

[0046] Further, as Figure 2 , Figure 3 and Figure 4 shown, at least one axially extending slot 13 is provided on the inner wall of the mounting hole portion 12; a snap connection portion 61 cooperating with the slot 13 is provided on the edge of the insulating cover 60 facing the threaded blind hole portion 11. The snap connection portion 61 extends away from the cover surface of the insulating cover 60, and the snap connection portion 61 is inserted into the slot 13, and the snap connection portion 61 is snap-connected to the slot 13, so that the insulating cover 60 is fixed on the mounting hole portion 12.

[0047] As Figure 4 and Figure 5 shown, a jack 52 is provided on the end face of the threaded mounting portion 51; a plug 62 inserted into the jack 52 is provided on the surface of the insulating cover 60 facing the threaded blind hole portion 11. When the insulating cover 60 is provided on the mounting hole portion 12, the plug 62 of the insulating cover 60 is inserted into the jack 52, thereby circumferentially limiting the threaded mounting portion 51. Therefore, the threaded mounting portion 51 is not easily loosened, improving the reliability of the connection and further improving the reliability and safety of use.

[0048] In this embodiment, during installation, first connect the tail section 30 of the lead wire and the front section 50 of the lead wire, then threadedly connect the threaded mounting portion 51 of the front section 50 of the lead wire to the threaded blind hole portion 11 of the battery outer cover 10, and then cover the insulating cover 60. Among them, the insulating cover 60 is pre-connected to the front section 50 of the lead wire.

[0049] Furthermore, as Figure 6 shown, the short-circuit protection structure includes: a support spring 70, a fuse 71, a partition plate 72, and a separation spring 73. The interior of the connecting portion 40 is a hollow structure. One part of the connecting portion 40 is fixedly connected to the tail section 30 of the lead wire, and the other part is fixedly connected to the front section 50 of the lead wire. The two parts of the connecting portion 40 are threadedly connected. At the same time, a sealing ring is provided at the connection of the two parts. One end of the support spring 70 is fixedly connected to one end inside the connecting portion 40, and the other end of the support spring 70 is fixedly connected to one end of the fuse 71. The other end of the fuse 71 is connected to the front section 50 of the lead wire inside the connecting portion 40. In the normal state, the support spring 70 is in a compressed state, so that the fuse 71 has good contact with the front section 50 of the lead wire. When a short circuit occurs, the fuse 71 will be blown to prevent the further propagation of the short-circuit current from damaging the lead wire and the battery.

[0050] The partition plate 72 is located on one side of the fuse 71. One end of the partition plate 72 faces the fuse 71 and abuts against the fuse 71; one end of the separation spring 73 abuts against the inner side wall of the connecting portion 40, and the other end of the separation spring 73 abuts against the other end of the partition plate 72. When the fuse 71 is blown, the end of the partition plate 72 in contact with the fuse 71 is released. Under the push of the separation spring 73, the partition plate 72 moves to further separate the two parts of the blown fuse 71, forming an additional layer of protection. In this way, a double protection against short circuits is formed, further improving safety and reliability.

[0051] Furthermore, a warning light is provided on the side wall of the connecting portion 40, and a switch circuit is also provided inside the connecting portion 40; the switch circuit is electrically connected to the warning light; the switch 80 of the switch circuit can contact one end of the partition plate 72. In this embodiment, when no short circuit occurs, the warning light is in the off state. After the fuse 71 is blown, the partition plate 72 moves to separate the two parts of the fuse 71, and one end of the partition plate 72 can touch the switch 80 of the switch circuit after the partition plate 72 moves, and the warning light is lit. At this time, the user can observe that a short circuit has occurred through the warning light, so as to take corresponding measures in time.

[0052] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant are intended to cover non-exclusive inclusion, so that an article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of another identical element in the article or device comprising the element. Similar words such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The orientation or positional relationship indicated by "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present utility model.

[0053] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0054] Obviously, those skilled in the art can make various modifications and variations to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and their equivalent technologies, the present utility model is also intended to include these modifications and variations.

Claims

1. A battery short-circuit prevention output device, characterized in that Comprising: An outer cover of a storage battery (10), an insulating protective sleeve (20), a tail section of a lead wire (30), a connecting portion (40), and a front section of a lead wire (50); The insulating protective sleeve (20) is sleeved on one end of the tail section of the lead wire (30); For the tail section of the lead wire (30), the other end is fixedly connected to the connecting portion (40); The connecting portion (40) is fixedly connected to one end of the front section of the lead wire (50), and a short - circuit insurance structure is arranged inside; The tail section of the lead wire (30) is detachably connected to the front section of the lead wire (50) through the connecting portion (40); For the front section of the lead wire (50), a threaded mounting portion (51) protruding radially is arranged at the other end; On the upper surface of the outer cover of the storage battery (10), a threaded blind - hole portion (11) and a mounting - hole portion (12) that are axially communicated are provided; The threaded blind - hole portion (11) and the mounting - hole portion (12) form a stepped - hole structure, and the inner diameter of the threaded blind - hole portion (11) is smaller than the inner diameter of the mounting - hole portion (12), and the threaded blind - hole portion (11) is located below the mounting - hole portion (12); The threaded blind - hole portion (11) is threadedly connected to the threaded mounting portion (51), and a storage - battery output terminal is arranged inside the threaded blind - hole portion (11); An insulating cover (60) is covered on the mounting - hole portion (12), the insulating cover (60) is snap - connected to the mounting - hole portion (12), and the insulating cover (60) is snap - connected to the end face of the threaded mounting portion (51); The front section of the lead wire (50) passes through the insulating cover (60) and is hermetically connected to the insulating cover (60).

2. The battery short-circuit prevention output device according to claim 1, wherein, At least one axially - extending slot (13) is arranged on the inner wall of the mounting - hole portion (12); On the edge of the insulating cover (60) facing the threaded blind - hole portion (11), a snap - connection portion (61) that cooperates with the slot (13) is provided; The snap - connection portion (61) extends towards the cover surface of the insulating cover (60), and the snap - connection portion (61) is inserted into the slot (13).

3. The anti-short-circuit output device for a storage battery according to claim 1 or 2, characterized in that, A jack (52) is arranged on the end face of the threaded mounting portion (51); On the surface of the insulating cover (60) facing the threaded blind - hole portion (11), a pin (62) that is inserted into the jack (52) is provided.

4. The battery short-circuit prevention output device according to claim 1, characterized in that, The short - circuit insurance structure includes: a support spring (70), a fuse (71), a partition plate (72), and a spacer spring (73); For the support spring (70), one end is fixedly connected to one end inside the connecting portion (40), and the other end is fixedly connected to one end of the fuse (71); For the fuse (71), the other end is connected to the front section of the lead wire (50) inside the connecting portion (40); The partition plate (72) is located on one side of the fuse (71), and one end faces the fuse (71) and abuts against the fuse (71); For the spacer spring (73), one end abuts against the inner side wall of the connecting portion (40), and the other end abuts against the other end of the partition plate (72).

5. The battery short-circuit prevention output device according to claim 4, wherein, A warning lamp is arranged on the side wall of the connecting portion (40), and a switch circuit is also arranged inside the connecting portion (40); The switch circuit is electrically connected to the indicator light; The switch (80) of the switch circuit can contact one end of the isolation board (72).

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