KR20230129870A - Fuse-box for battery-module of vehicle - Google Patents

Abstract

An invention for a fuse box for a vehicle battery is disclosed. The fuse box for the battery of the disclosed vehicle includes: a middle body forming a receiving space that is open on one side to accommodate the fuse, a lower body detachably coupled to the middle body to block the open side of the middle cover, and a lower body on both sides of the fuse. A first conductive member that is each connected to an extending electrode piece and protrudes out of the other side of the middle body, a plate-shaped plate bus bar supported in contact with the other side of the middle body and in contact with the corresponding first conductive member so as to conduct electricity, and It is characterized in that it includes a second conductive member that is fixed to the middle body and contacts the corresponding plate bus bar in a conductive manner and connects a battery bus bar disposed in parallel with the corresponding plate bus bar.

Description

Fuse box for vehicle battery {FUSE-BOX FOR BATTERY-MODULE OF VEHICLE}

The present invention relates to a fuse box for a vehicle battery. More specifically, the present invention relates to a fuse box for a vehicle battery, and more specifically, a fuse mounted in the fuse box is disposed in parallel with the plate bus bars, with pin-shaped conductive members in contact with each of the roughly plate-shaped plate bus bars. As the battery bus bar contacts the current-carrying member and guides the current, the shape is implemented to enable two-way current transmission, simplifying the shape of the battery current-carrying bus bar to improve workability, and simplifying the shape of the battery current-carrying bus bar to a plate shape. This relates to a fuse box for a vehicle battery that aims to reduce production and maintenance costs by doing so.

In general, vehicles are equipped with various electrical devices for the operation of the vehicle itself and the convenience of passengers. These electrical devices are electrically connected to the battery and generator to receive the power necessary for operation, and the driver's switch operation and controller's electronics It is operated by control.

In addition, fuses are provided on the power supply lines of electrical devices to protect them by generating short circuits when excessive current flows due to abnormalities in the electrical system or overload. They are integrated and installed in the fuse box for convenience of management.

Meanwhile, in an electric vehicle equipped with a high-voltage battery, the fuse box where the fuse for the high-voltage battery is installed has an optimal size to reduce cost and weight during design, and is easy to replace the fuse in case of failure, while improving watertightness. Design conditions such as minimum opening, securing rigidity against external impact, electromagnetic wave shielding, and ease of workability inside the battery must be considered.

In particular, Republic of Korea Patent Publication No. 10-2086128 (registration date: 2020.03.02.) discloses “battery pack and electric vehicle including such battery pack,” and Republic of Korea Patent Publication No. 10-2020-0080068 (publication date: :2020.07.06.) discloses “a battery module, a battery pack including such a battery module, and a vehicle including such a battery pack.”

The above-described technical configuration is background technology to aid understanding of the present invention, and does not mean that it is widely known prior art in the technical field to which the present invention belongs.

The fuse box connected to the vehicle battery pack according to the prior art must be located on the cover side of the battery pack to ensure ease of maintenance, and the bus bar inside the fuse box must be connected to the inside of the battery pack due to the conduction of electricity to the battery. Assembly quality is reduced, and the location of the fuse maintenance window is located at the bottom of the battery pack, which causes the inconvenience of having to replace the fuse toward the bottom. In addition, the energized bus bar is located at the top of the fuse box, making wiring work with the battery difficult. There is a difficult problem.

Therefore, there is a need to improve this.

The present invention was devised to improve the problems described above. A battery is disposed in parallel with the plate bus bars, with pin-shaped conductive members in contact with each of the roughly plate-shaped plate bus bars on both sides of the fuse mounted in the fuse box. As the bus bar contacts the current-carrying member and guides the current, the shape is implemented to enable two-way electrical conduction to improve workability by simplifying the shape of the battery current-carrying bus bar, and is manufactured by simplifying the shape of the battery current-carrying bus bar into a plate shape. The purpose is to provide a fuse box for the battery of a vehicle to reduce costs and maintenance costs.

The fuse box for a vehicle battery according to the present invention includes: a middle body forming an accommodating space that is open on one side to accommodate a fuse; a lower body detachably coupled to the middle body to block the open side of the middle cover; a first conductive member protruding outside the other side of the middle body while being connected to electrode pieces extending to both sides of the fuse; a plate bus bar supported in contact with the other side of the middle body and in contact with the corresponding first conductive member to enable electricity to be passed; a second conductive member fixed to the middle body and in electrically contact with the corresponding plate bus bar, and connecting a battery bus bar disposed in parallel with the corresponding plate bus bar; and a cover that covers and protects the middle body and the plate bus bar and is detachably coupled to the lower body or the middle body.

The middle body is characterized in that it forms a cap that covers and protects at least one of the corresponding first and second conductive members.

The plate bus bar is characterized in that it forms an edge groove to guide the slide insertion of the corresponding first and second conductive members, respectively, in the lateral direction.

The middle body is characterized in that it is provided with an elastic support member to elastically support the corresponding plate bus bar in contact with the other side while being in contact with the first conductive member and the second conductive member.

As described above, the fuse box for a vehicle battery according to the present invention, unlike the prior art, has a pin-shaped conductive member in contact with each of the roughly plate-shaped plate bus bars on both sides of the fuse mounted in the fuse box, and the plate bus. As the battery busbar, which is arranged in parallel with the bar, contacts the current-carrying member and guides the current, the shape is implemented to enable two-way current conduction, simplifying the shape of the battery busbar to improve workability, and the shape of the battery current-carrying busbar. By simplifying it into a plate, manufacturing and maintenance costs can be reduced.

1 is a perspective view of a fuse box for a vehicle battery according to an embodiment of the present invention.
Figure 2 is a perspective view of the cover of a fuse box for a vehicle battery according to an embodiment of the present invention with the cover removed.
Figure 3 is a rear perspective view of the cover of a fuse box for a vehicle battery according to an embodiment of the present invention with the cover removed.
Figure 4 is an exploded perspective view of a fuse box for a vehicle battery according to an embodiment of the present invention.
Figure 5 is an exploded perspective view of the bottom of a fuse box for a vehicle battery according to an embodiment of the present invention.
Figure 6 is a front view of a fuse box for a vehicle battery according to an embodiment of the present invention with the cover removed.
Figure 7 is a plan view of a fuse box for a vehicle battery according to an embodiment of the present invention with the cover removed.
Figure 8 is a cross-sectional view taken along line AA of Figure 7.
Figure 9 is a cross-sectional view taken along line BB of Figure 7.

Hereinafter, an embodiment of a fuse box for a vehicle battery according to the present invention will be described with reference to the attached drawings. In this process, the thickness of lines or sizes of components shown in the drawing may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are terms defined in consideration of functions in the present invention, and may vary depending on the intention or custom of the user or operator. Therefore, definitions of these terms should be made based on the content throughout this specification.

Figure 1 is a perspective view of a fuse box for a vehicle battery according to an embodiment of the present invention, Figure 2 is a perspective view of a cover of a fuse box for a vehicle battery according to an embodiment of the present invention with the cover removed, and Figure 3 is a perspective view of the fuse box for a vehicle battery according to an embodiment of the present invention. This is a rear perspective view of the cover of a fuse box for a vehicle battery according to an embodiment of the invention with the cover removed.

Figure 4 is an exploded perspective view of a fuse box for a vehicle battery according to an embodiment of the present invention, and Figure 5 is an exploded perspective view of the bottom of a fuse box for a vehicle battery according to an embodiment of the present invention.

Figure 6 is a front view with the cover of the fuse box for the battery of a vehicle according to an embodiment of the present invention removed, and Figure 7 is a plan view with the cover of the fuse box for the battery of a vehicle removed according to an embodiment of the present invention. am.

FIG. 8 is a cross-sectional view taken along line A-A of FIG. 7, and FIG. 9 is a cross-sectional view taken along line B-B of FIG. 7.

1 to 9, the fuse box 100 for a vehicle battery according to an embodiment of the present invention includes a middle body 110, a lower body 120, a first energizing member 130, and a plate bus bar. (140), it includes a second conductive member (150) and a cover (160).

The fuse box 100 according to the present invention is electrically connected to a vehicle battery pack (not shown).

At this time, the middle body 110 accommodates the fuse 10 and forms the outer shape of the fuse box 100.

In particular, the middle body 110 forms an accommodation space 112 on one side (lower part) to accommodate the fuse 10 in order to prevent the fuse 10 from being exposed to the outside.

The fuse 10 extends one electrode piece 12 to one side along the axial direction, and extends the other electrode piece 14 to the other side. Then, one electrode piece (12) passes through one side opening hole (13), and the other electrode piece (14) passes through the other opening hole (15). One electrode piece 12 and the other electrode piece 14 are made of a material that can conduct electricity.

In addition, the lower body 120 is detachably coupled to the middle body 110 in order to block the open side of the middle body 110. At this time, the lower body 120 is detachably coupled to the lower part of the middle body 110 by a fastening bolt 122.

In addition, the middle body 110 or the lower body 120 may be detachably coupled to a fixture such as a battery pack.

Of course, the middle body 110 and the lower body 120 can be modified into various shapes and are made of an insulating material.

In addition, the first conductive member 130 serves to fix the fuse 10 inside the middle body 110, especially the receiving space 112, and guide the electrical connection to the battery pack.

For this purpose, the first conductive member 130 is provided on one electrode piece 12 and the other electrode piece 14, respectively. In detail, the first conductive member 130 has a bolt or pin shape and is inserted into the one side opening hole 13 and the other opening hole 15, respectively. The lower portion of the first conductive member 130 protruding toward the lower side of the one side opening hole 13 (as seen in the drawing) and the lower side of the other side opening hole 15 is coupled to and fixed to the nut member 132.

Of course, the lower part of the first energizing member 130 may be coupled to the lower body 120 and fixed thereto. Therefore, the first conductive member 130 is electrically connected to one electrode piece 12 and the other electrode piece 14, respectively.

In addition, the upper portion of each first conductive member 130 is inserted into the middle body 110 so as to protrude toward the upper portion of the middle body 110 (as seen in the drawing). At this time, the middle body 110 may be formed with a portion of the upper surface open in the upward direction, or may be formed as a relatively small hole of a size into which each of the first conductive members 130 is axially inserted.

In addition, the plate bus bar 140 is supported in contact with the other side (upper surface) of the middle body 110 and has a plate shape that contacts the corresponding first conductive member 130 to enable electricity to pass. That is, since the plate bus bar 140 is formed in a plate shape, assembly can be improved through simplification of the shape and manufacturing costs can be reduced.

In addition, the second conductive member 150 is fixed to the middle body 110, particularly the other side (upper side) of both edges of the middle body 110, and is in contact with the corresponding plate bus bar 140 to enable electricity to be conducted. In addition, the second conductive member 150 connects the battery bus bar 152 arranged in parallel with the corresponding plate bus bar 140.

That is, the plate bus bar 140 is faced with the upper side at both edges along the axial direction of the middle body 110 and comes into contact with the corresponding first and second conductive members 130 and 150.

In addition, the battery bus bar 152 is connected to the second conductive member 150 that protrudes further above the middle body 110 so as to conduct electricity. Accordingly, the fuse 10, the first conductive member 130, the plate bus bar 140, the second conductive member 150, and the battery bus bar 152 are electrically connected. The second current-carrying member 150 can be modified into various shapes, but is shown as having a bolt or pin shape.

At this time, the plate bus bar 140 and the battery bus bar 152 may be arranged to overlap on both upper sides along the axial direction of the middle body 110, or may be arranged on the same plane with a gap between them.

In addition, the battery bus bar 152 may be connected to the second energizing member 150 in various ways.

In particular, in order to increase the assembly ability of the plate bus bar 140, the plate bus bar 140 has the corresponding first and second conductive members 130 and 150 respectively on the upper side of the middle body 110. An edge groove 142 is formed to guide slide insertion in the lateral direction. At this time, the place bus bar forms an edge groove 142 to accommodate the corresponding first and second conductive members 130 and 150 on a one-to-one basis. Of course, the edge groove 142 can be modified into various shapes.

In addition, the cover 160 covers and protects the middle body 110, especially the upper part of the middle body 110, the pair of plate bus bars 140, and the pair of battery bus bars 152, 120) or is detachably coupled to the middle body 110. At this time, the cover 160 is detachably coupled to the lower body 120 or middle body 110 by various methods such as bolting or hooking.

The cover 160 and the middle body 110 may have heat dissipation holes for heat dissipation.

Meanwhile, as the plate bus bar 140 contacts the first and second conductive members 130 and 150 while being in contact with the upper surfaces of both sides of the middle body 110, shaking in the vertical direction may occur. .

To prevent this, the middle body 110 extends a cap 114 that covers and protects at least one of the corresponding first and second conductive members 130 and 150. At this time, the cap 114 is provided with a gap equal to the thickness of the plate bus bar 140 and the upper surfaces of both edges of the middle body 110 where the plate bus bar 140 is interviewed.

Therefore, the plate bus bar 140 is slidably inserted into the space between the upper surfaces of both edges of the middle body 110 and the cap 114 and contacts the corresponding first and second conductive members 130 and 150. I do it. At this time, the plate bus bar 140 is prevented from shaking upward by the cap 114.

Additionally, the plate bus bar 140 may arbitrarily slide away from both edges toward the rear along the axial direction of the middle body 110.

To prevent this, the middle body 110 elastically holds the corresponding plate bus bar 140 in contact with the other side (upper side) while contacting the first and second conductive members 130 and 150. An elastic support member 116 is provided for support. At this time, the elastic support member 116 serves to elastically press the plate bus bar 140 toward the corresponding first and second conductive members 130 and 150. Of course, the elastic support member 116 can be transformed into various shapes.

The present invention has been described with reference to the embodiments shown in the drawings, but these are merely exemplary, and those skilled in the art will recognize that various modifications and other equivalent embodiments are possible therefrom. You will understand. Therefore, the true technical protection scope of the present invention should be determined by the claims below.

10: Fuse 12: One side electrode piece
14: Other electrode piece 100: Fuse box
110: middle body 112: accommodation space
114: cap 116: elastic support member
120: Lower body 130: First energizing member
132: nut member 140: plate bus bar
142: Edge groove 150: Second energizing member
152: battery bus bar 160: cover

Claims (5)

A middle body forming a receiving space that is open on one side to accommodate a fuse;
a lower body detachably coupled to the middle body to block the open side of the middle cover;
a first conductive member protruding outside the other side of the middle body while being connected to electrode pieces extending to both sides of the fuse;
a plate bus bar in the shape of a plate supported in contact with the other side of the middle body and in contact with the corresponding first conductive member to conduct electricity; and
A fuse for a battery of a vehicle, comprising a second conductive member fixed to the middle body and in contact with the corresponding plate bus bar in a conductive manner, and connecting a battery bus bar disposed in parallel with the corresponding plate bus bar. box.
According to clause 1,
A fuse box for a vehicle battery, comprising a cover that covers and protects the middle body and the plate bus bar and is detachably coupled to the lower body or the middle body.
According to clause 1,
The middle body is a fuse box for a vehicle battery, characterized in that it forms a cap that covers and protects at least one of the corresponding first and second conductive members.
According to any one of claims 1 to 3,
A fuse box for a battery of a vehicle, wherein the plate bus bar forms an edge groove to guide the slide insertion of the corresponding first and second conductive members, respectively, in the lateral direction.
According to clause 4,
The middle body is a fuse for a vehicle battery, characterized in that it is provided with an elastic support member to elastically support the corresponding plate bus bar in contact with the other side while in contact with the first conductive member and the second conductive member. box.

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