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CN-224204088-U - Fuse protector

CN224204088UCN 224204088 UCN224204088 UCN 224204088UCN-224204088-U

Abstract

The utility model belongs to the technical field of electronic devices, and particularly relates to a fuse, which comprises a shell and a conductive part arranged on the shell, wherein a heating element is arranged adjacent to the conductive part and is electrically connected with a first fuse, the first fuse and the heating element are both arranged in the shell, a blocking part is arranged in the shell, at least part of the heating element is abutted against the blocking part, a second fuse is arranged in a containing cavity defined by the blocking part and the shell, at least part of the conductive part is connected with the second fuse, and a concave part is arranged at the edge of the conductive part. The utility model has the advantages of quick protection response, automatic circuit breaking when the main circuit has short-circuit fault, active circuit breaking by using external current, and protection effect.

Inventors

  • Zhong Yabao
  • HU ZHIMIN
  • WANG LONG
  • BU WENHUI

Assignees

  • 东莞市贝特电子科技股份有限公司

Dates

Publication Date
20260505
Application Date
20231205

Claims (10)

  1. 1. A fuse, characterized by comprising: A housing (1) and a conductive part (2) provided to the housing (1); The heating element (3) is arranged adjacent to the conductive part (2), the heating element (3) is electrically connected to the first fusing element (4), and the first fusing element (4) and the heating element (3) are both arranged in the shell (1); The inside of casing (1) has separation portion (10), at least part of piece (3) that generates heat support in separation portion (10), separation portion (10) with appearance chamber (11) that casing (1) encloses are provided with second fuse (5), at least part of electrically conductive portion (2) with second fuse (5) meet, the border of electrically conductive portion (2) is provided with depressed part (20).
  2. 2. The fuse of claim 1, wherein at least two of said heat generating elements (3) are disposed opposite to each other in said housing (1), a heat transfer passage is provided between said two heat generating elements (3) disposed opposite to each other, and said first fuse element (4) is disposed in said heat transfer passage.
  3. 3. The fuse of claim 2, wherein a projected area of said heat generating element (3) in a height direction of said housing (1) is not larger than a projected area of said heat generating element (3) in a width direction of said housing (1).
  4. 4. The fuse of claim 1, wherein at least two of said heat generating elements (3) are disposed opposite to each other on the side of said second fuse element (5), and wherein said heat generating elements (3) are disposed within said cavity (11).
  5. 5. The fuse of claim 1, wherein said heat generating element (3) is cylindrical, and said second fuse element (5) is sleeved in said heat generating element (3).
  6. 6. A fuse as in claim 1 or 2, wherein the conductive part (2) comprises a first conductive body (21) and a second conductive body (22) connected, the first conductive body (21) extending to the outside of the housing (1), the second conductive body (22) being located inside the housing (1), the second conductive body (22) having clamping teeth (23) for clamping the second fuse element (5).
  7. 7. The fuse of claim 6, wherein said blocking portion (10) comprises a first partition (101) and a plurality of second partitions (102) respectively abutted against said first partition (101), said heat generating member (3) is abutted against said first partition (101), said first partition (101) is disposed between said first fuse (4) and a plurality of said second partitions (102), said clamping teeth (23) and said second fuse (5) each have a plurality of clamping grooves (24) between said clamping teeth (23) for clamping said second partitions (102).
  8. 8. A fuse as claimed in claim 6, characterized in that the junction of the first electrical conductor (21) and the second electrical conductor (22) has a through-hole (25), the through-hole (25) corresponding to the interior of the housing (1).
  9. 9. The fuse of claim 6, wherein a first positioning groove (12) and a second positioning groove (13) are formed in the side portion of the housing (1), the first conductor (21) is arranged in the first positioning groove (12), the end portion of the heating element (3) is provided with an outgoing conductor (7), and the outgoing conductor (7) is arranged in the second positioning groove (13).
  10. 10. A fuse as per claim 1 or 2, characterized in that one side of the housing (1) is provided with a cover (6), the surface of the cover (6) having at least one through hole (61) corresponding to the interior of the housing (1), the side of the cover (6) facing the interior of the housing (1) having a plurality of protrusions (62).

Description

Fuse protector Technical Field The utility model belongs to the technical field of electronic devices, and particularly relates to a fuse. Background With the development of the energy storage industry, the energy storage capacity of a chemical battery becomes a bottleneck for energy storage development. To solve this problem, the larger the capacity of the battery is, the higher the platform voltage is at the same time, so as to reduce reactive power loss. However, this may lead to a number of safety hazards, such as short circuits, and if the power supply is not turned off in time when the circuit fails, a large capacity, high voltage battery may cause a significant loss of property to people. In this case, a fuse is arranged on the circuit, and the conventional fuse is disconnected after the body senses the temperature and reaches the melting point of a fuse fusing medium material (alloy and the like), so that the circuit protection effect of the fuse has hysteresis. At present, the over-temperature fuse of single-group circuit design occupies more than about 95% of the current over-temperature fuse market, and the over-temperature fuse of single-group circuit design always has the phenomenon of slow response in the protection process, when the fuse does not exert the protection effect yet, the protected components and parts burn out because of too fast temperature rise, the two groups of combined circuits, namely main circuit and control circuit design, are designed for auxiliary quick heating in combination with practical application, the defect of slow response of the original traditional single-group circuit design is greatly improved, and the effective quick response protection components and parts are not burnt out, so that the real quick protection effect is achieved. However, the fuse of the two groups of circuit designs has larger volume and size because the fuse is applied to the circuit board and limited by space such as height, therefore, the fuse can be applied to electrical products with small space only by further development and optimization. For this reason, a new solution is needed to solve the above problems. Disclosure of utility model The utility model aims to provide a fuse aiming at the defects of the prior art, so as to solve the problems that the existing fuse is slow in response and cannot be applied to electrical products with small space. In order to achieve the above purpose, the present utility model adopts the following technical scheme: a fuse, comprising: a housing and a conductive portion provided to the housing; The heating piece is arranged adjacent to the conductive part and is electrically connected to the first fusing piece, and the first fusing piece and the heating piece are both arranged in the shell; The inside of casing has the separation portion, the at least part of piece that generates heat support in the separation portion, separation portion with the appearance chamber that the casing encloses is provided with the second fuse, the conduction portion at least part with the second fuse meets, the border of conduction portion is provided with the depressed part. Preferably, at least two heating elements are oppositely arranged in the shell, a heat transfer channel is arranged between the two heating elements which are oppositely arranged, and the first fusing element is arranged in the heat transfer channel. Preferably, the projection area of the heating element along the height direction of the shell is not larger than the projection area of the heating element along the width direction of the shell. Preferably, at least two heating elements are oppositely arranged on the side face of the second fusing element, and the heating elements are arranged in the containing cavity. Preferably, the heating element is cylindrical, and the second fusing element is sleeved in the heating element. Preferably, the conductive part includes a first conductive body and a second conductive body connected to each other, the first conductive body extending to the outside of the housing, the second conductive body being located inside the housing, the second conductive body having clamping teeth for clamping the second fuse. Preferably, the blocking portion includes a first partition plate and a plurality of second partition plates respectively abutted against the first partition plate, the heating element is abutted against the first partition plate, the first partition plate is arranged between the first fuse element and the second partition plates, the clamping teeth and the second fuse element are respectively provided with a plurality of clamping grooves, and clamping the second partition plates are arranged between the clamping teeth. Preferably, the connection part of the first conductor and the second conductor is provided with a through hole, and the through hole corresponds to the inside of the shell. Preferably, the side portion of the housing has a first positioning