Fuse unit and conductive module

Abstract

Protect the conductive parts. [Solution] The circuit protection component comprises a circuit protection component 30, a first terminal fitting 40 that directly electrically connects a first electrical connection portion 41 to a first electrode 31 of the circuit protection component, a second terminal fitting 50 that directly electrically connects a second electrical connection portion 51 to a second electrode 32 of the circuit protection component, a wiring component 60 interposed between the second terminal fitting and the second object to be electrically connected, with one end of the conductor portion 61 directly electrically connected to the wiring connection portion 52 of the second terminal fitting, and the other end of the conductor portion directly or indirectly electrically connected to the second object to be electrically connected, and a housing component 70 in which one end of the first electrical connection portion, the second electrical connection portion, the circuit protection component installed spanning the first and second electrical connection portions, the wiring connection portion, and the conductor portion are housed in a housing chamber 70a.

Claims

1. A circuit protection component that melts a fusible part when an overcurrent flows between the first electrical connection target and the second electrical connection target, A first terminal fitting that directly electrically connects a first electrical connection portion to the first electrode of the circuit protection component, and directly or indirectly electrically connects a conductor connection portion to the first object to be electrically connected, A second terminal fitting that directly electrically connects the second electrical connection portion to the second electrode of the circuit protection component, and also directly or indirectly electrically connects to the second object to be electrically connected, A wiring component interposed between the second terminal fitting and the second object to be electrically connected, with one end of the conductor directly electrically connected to the wiring connection portion of the second terminal fitting, and the other end of the conductor directly or indirectly electrically connected to the second object to be electrically connected, The first electrical connection part, the second electrical connection part, the circuit protection component installed spanning the first electrical connection part and the second electrical connection part, the wiring connection part, and the electrically insulating housing component in which one end of the conductor part is housed in a housing chamber, A fuse unit characterized by having the following features.

2. The wiring component is provided with an electrically insulating covering at its terminal that covers at least one end of the conductor portion on the side of the second electrical connection target, The housing component comprises a housing member having a bottom portion on which the first electrical connection portion, the second terminal fitting, the circuit protection component, and the terminals of the wiring component are installed, and a pair of side wall portions extending downward from the bottom portion and positioned opposite each other with a gap between them, with the first electrical connection portion, the second terminal fitting, the circuit protection component, and the terminals of the wiring component in between. The housing member has a housing chamber in the space enclosed by the bottom and the pair of side walls, and one opening enclosed by the bottom and the pair of side walls is designated as the first outlet, and the other opening enclosed by the bottom and the pair of side walls is designated as the second outlet. The first electrical connection part is positioned such that its conductor connection part is pulled out from the first outlet to the outside of the housing chamber. The fuse unit according to claim 1, characterized in that the wiring component extends from the second outlet to the housing chamber beyond its terminal, on the side of the second electrical connection target.

3. The housing member has an opening between the respective ends of the pair of side wall portions located in the vertical direction from the bottom, which serves as the insertion point for the first electrical connection portion, the second terminal fitting, the circuit protection component, and the end of the wiring component. The fuse unit according to claim 2, characterized in that the housing component includes a cover member that covers the insertion opening in the assembled and fixed position on the housing member.

4. The fuse unit according to claim 3, characterized in that the cover member comprises: a lid portion that covers the insertion opening at the completed assembly position; a first side lid portion that extends downward from the lid portion and covers the first outlet at the completed assembly position, and allows the conductor connection portion side of the first electrical connection portion to be pulled out of the housing chamber from the gap with the bottom at the completed assembly position; and a second side lid portion that extends downward from the lid portion and covers the second outlet at the completed assembly position, and allows the electrical connection target side of the wiring component to be pulled out of the housing chamber from the gap with the bottom at the completed assembly position.

5. The housing member has a pair of second side walls that are suspended from the bottom at one of the openings and the other opening, which are surrounded by the bottom and a pair of the side walls that serve as a pair of first side walls. The second side wall portion has a notch cut out from the tip located in the vertical direction from the bottom towards the bottom, which serves as the first outlet. The other side of the second side wall portion has a notch cut out from the tip located in the vertical direction from the bottom towards the bottom, which serves as the second outlet. The fuse unit according to claim 3, characterized in that the cover member comprises: a lid portion that covers the insertion opening at the completed assembly position; a first side lid portion that extends downward from the lid portion and covers the first outlet at the completed assembly position, and allows the conductor connection portion side of the first electrical connection portion to be pulled out of the housing chamber from the gap with the bottom at the completed assembly position; and a second side lid portion that extends downward from the lid portion and covers the second outlet at the completed assembly position, and allows the electrical connection target side of the wiring component to be pulled out of the housing chamber from the gap with the bottom at the completed assembly position.

6. The aforementioned housing component has connecting portions that are connected to the housing member and the cover member, respectively. The fuse unit according to claim 3, characterized in that the connecting portion displaces the relative positions of the housing member and the cover member between a first state in which the insertion opening is exposed and a second state in which the insertion opening is covered by the cover member.

7. A fuse unit according to any one of claims 2 to 6, characterized in that it comprises the first electrical connection part, the second terminal fitting, the circuit protection part, and an electrically insulating covering resin part that encloses the terminal of the wiring part.

8. A connecting conductor that is directly electrically connected to the electrode terminals of the battery cells that make up the battery module, A fuse unit that indirectly electrically connects the connecting conductor to a battery monitoring unit that monitors the battery state of the battery cell, Equipped with, The aforementioned fuse unit is A circuit protection component that melts a fusible part when an overcurrent flows between the connecting conductor and the battery monitoring unit, A first terminal fitting that directly electrically connects the first electrical connection portion to the first electrode of the circuit protection component, and directly or indirectly electrically connects the conductor connection portion to the connecting conductor, A second terminal fitting that directly electrically connects the second electrical connection portion to the second electrode of the circuit protection component and directly or indirectly electrically connects to the battery monitoring unit, A wiring component interposed between the second terminal fitting and the battery monitoring unit, with one end of the conductor directly electrically connected to the wiring connection portion of the second terminal fitting, and the other end of the conductor directly or indirectly electrically connected to the battery monitoring unit, The first electrical connection part, the second electrical connection part, the circuit protection component installed spanning the first electrical connection part and the second electrical connection part, the wiring connection part, and the electrically insulating housing component in which one end of the conductor part is housed in a housing chamber, A conductive module characterized by having the following features.

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