JP2011258487A - Battery cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a battery cover which can reduce the number of components and the number of mold types with a structure having a function of distributing battery current.SOLUTION: The battery cover includes a cover body 5 which faces an upper surface of batteries 2 and 3, a branch circuit body 6 which is embedded in the cover body and distributes supply current from the battery, an input electric wire 7 which connects a plus electrode 23 of the battery 2 with the branch circuit body 6 to supply current to the branch circuit body 6, an output terminal part 8 which is connected to a load side to supply current from the battery 2 to the load side, and a fuse element part 9 which is provided between the branch circuit body 6 and the output terminal part 8 and disconnects the load side and the battery side with excess current.

Description

  The present invention relates to a battery cover that covers an upper surface of an in-vehicle battery and protects the battery.

  FIG. 20 shows a structure in which a fuse box for distributing and supplying the current of an on-vehicle battery to a vehicle load is attached to the battery (see Patent Document 1).

  The fuse box 100 has a box-shaped box body 120 and a lid 130, which are made of resin. Various electrical components 160 including a terminal 150 connected to the battery post 140 of the battery 110 are arranged in the box main body 120. In order to attach the box main body 120 to the battery 110, a hook claw 170 protrudes downward from the box main body 120, and the hook claw 170 is engaged with an edge portion of the lid portion 110 a of the battery 110. The lid 130 closes the upper surface of the box body 120 and is attached to the box body 120 so that it can be opened and closed.

  In a vehicle such as a truck, since the battery 110 is installed outside the vehicle, it is necessary to protect the battery 110 and the fuse box 100 from an environment such as water and dust. For this reason, a cover (not shown) is placed on the top of the fuse box 100 to cover the entire battery 110 including the fuse box 100.

EP1332924A1 publication

  In the structure of FIG. 20, the fuse box 100 for distributing the current of the battery 110 and a cover for protecting the fuse box 100 are disposed with respect to the battery 110. For this reason, the three parts of the box main body 120 and the cover 130 of the fuse box 100 and the cover which covers the fuse box 100 are required, and the number of parts is increasing. And since these components are shape | molded with resin, the metal mold | die for shape | molding each component is needed, and the kind of metal mold | die has also increased.

  The present invention has been made in consideration of such conventional problems, and the structure having a function of distributing the battery current can reduce the number of parts and the types of molds. An object of the present invention is to provide a battery cover.

  In order to achieve the above object, a first aspect of the present invention provides a battery cover that covers and protects the upper surface of a battery, the cover body facing the upper surface of the battery, and the battery cover embedded in the cover body. A branch circuit body that distributes the supply current of the battery, an input wire that connects the positive electrode of the battery and the branch circuit body and supplies current to the branch circuit body, and a load that is connected to the load side to supply current from the battery. It has an output terminal part supplied to the load side, and a fusible body part provided between the branch circuit body and the output terminal part, which cuts off the load side and the battery side due to overcurrent.

  The invention according to claim 2 is the battery cover according to claim 1, wherein the fusible part is a circuit body side terminal connected to the branch circuit body, a load side terminal connected to the output terminal part, and these It consists of a soluble part provided between the circuit body side terminal and the load side terminal.

  Invention of Claim 3 is a battery cover of Claim 2, Comprising: The said circuit body side terminal, the said load side terminal, and the said soluble part are integrally formed with the said branch circuit body, The said branch circuit body and the said The circuit body-side terminal, the load-side terminal, and the fusible part are embedded in the cover body.

  A fourth aspect of the invention is the battery cover according to the second or third aspect, wherein the soluble portion is formed of a soluble electric wire that is fused by an overcurrent.

  According to the first aspect of the present invention, the cover body covers the upper surface of the battery, so that the battery cover protects the battery from the environment such as water and dust. In this battery cover, since a branch circuit body that distributes the supply current from the battery is embedded in the cover body, there is no need to connect a fuse box or fuse unit for distributing and supplying the battery current to the battery.

  Since such a battery cover has a battery current distribution function and a battery protection function, the number of components attached to the battery can be reduced. Further, since the number of parts is reduced, the types of molds for molding the parts to be attached to the battery can be reduced.

  According to the second aspect of the invention, in addition to having the effect of the first aspect of the invention, the fusible part that cuts off the load side and the battery side due to overcurrent includes the circuit body side terminal and the load side terminal. Since it is formed by the fusible portion, the battery and the load can be electrically connected and the load can be protected from overcurrent.

  According to the invention of claim 3, in addition to having the effect of the invention of claim 2, the fusible part is integrated with the branch circuit body, and the fusible part and the branch circuit body are the cover body. Therefore, the number of parts for electrical connection can be reduced, and the electrical connection work is simplified. In addition, the battery and the load can be electrically connected only by handling the cover body, which improves workability.

  According to the invention described in claim 4, in addition to the effects of the inventions described in claims 2 and 3, since the soluble part is formed by the soluble electric wire, replacement of the soluble part becomes easy.

It is a perspective view which shows the relationship between the battery cover and battery of 1st Embodiment of this invention. It is the M section expansion perspective view in FIG. It is a perspective view from the bottom face of the battery cover which shows the connection with a battery and load. It is a perspective view from the bottom face of a battery cover. (A), (b) is a figure which shows the bolt for connection. It is a front view of a branch circuit body. It is a front view which shows the connection state to a branch circuit body. It is a top view of the state which attached the battery cover of 1st Embodiment to the battery. It is a front view of FIG. It is a side view of FIG. It is a perspective view which shows the relationship between the battery cover and battery of 2nd Embodiment of this invention. FIG. 12 is an enlarged perspective view of a portion N in FIG. 11. It is a perspective view from the bottom face of the battery cover which shows the connection with a battery and load. It is a perspective view which shows the branch circuit body of 2nd Embodiment. It is a perspective view which shows the soluble body part of 2nd Embodiment. It is a perspective view of the state which attached the battery cover of 2nd Embodiment to the battery. FIG. 17 is a plan view of FIG. 16. FIG. 17 is a front view of FIG. 16. FIG. 17 is a side view of FIG. 16. It is a perspective view which shows the conventional structure described in patent document 1. FIG.

  Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. In each embodiment, the same member is assigned the same reference numeral.

[First Embodiment]
1 to 10 show a first embodiment of the present invention, FIG. 1 is a perspective view showing a relationship between a battery cover and a battery, FIG. 2 is an enlarged perspective view of a portion M in FIG. 1, FIG. 4 is a perspective view from the bottom surface of the battery cover, FIG. 5 is a front view of a connection bolt used for the battery cover, and FIG. 6 is a front view of the branch circuit body. 7 is a front view showing a connection state to the branch circuit body, FIG. 8 is a plan view of the battery cover attached to the battery, FIG. 9 is a front view of FIG. 8, and FIG. 10 is a side view of FIG. is there.

  As shown in FIG. 1, the battery cover 1 of this embodiment has a cover body 5 having a size that covers the two batteries 2 and 3. The cover body 5 is formed of resin, and includes a rectangular plate-shaped cover plate portion 5a having a size obtained by combining the two batteries 2 and 3, and four peripheral wall portions 5b suspended from four sides of the cover plate portion 5a. Is formed by.

  The battery cover 1 includes a branch circuit body 6, an input electric wire 7, two output terminal portions 8, and a fusible body portion 9 as shown in FIG.

  As shown in FIG. 6, the branch circuit body 6 is formed integrally with the soluble body portion 9, and the bus bar 10 is configured by the branch circuit body 6 and the soluble body portion 9. The bus bar 10 is embedded in the cover main body 5, and the cover main body 5 is molded by injecting resin in a state where the bus bar 10 is inserted into the mold.

  The branch circuit body 6 constituting the bus bar 10 includes an input side circuit unit 11 connected to the input electric wire 7 side and two output side circuit units 12 connected to the load side.

  The fusible part 9 constituting the bus bar 10 is provided between the input side circuit part 11 and the two output side circuit parts 12 so as to connect them. Each fusible part 9 includes a circuit body side terminal 13 connected to the input side circuit part 11, a load side terminal 14 connected to the output terminal part 8 via the output side circuit part 12, a circuit body side terminal 13, and And a fusible portion 15 provided between the load side terminals 14. When an overcurrent flows from the battery 2 to the branch circuit body 6 via the input electric wire 7, the fusible portion 15 is melted. Thereby, the battery 2 side and the load side of the vehicle are blocked, and the load on the vehicle can be protected.

  Bolt holes 16, 17, and 18 are formed in the input side circuit portion 11 and the two output side circuit portions 12 in the branch circuit body 6 embedded in the cover body 5. By inserting a connecting bolt 19 shown in FIG. 5 into the bolt holes 16, 17, and 18, current can be input and output to the branch circuit body 6.

  As shown in FIG. 2 and the like, a washer-shaped input terminal portion 20 and two output terminal portions 8 are formed on the bottom surface of the cover plate portion 5 a corresponding to the bolt holes 16, 17, and 18 of the branch circuit body 6. It is attached. The connection bolt 19 is press-fitted into the three bolt holes 16, 17, 18 of the branch circuit body 6, and then penetrates the input terminal portion 20 and the two output terminal portions 8. Thereby, the input side circuit unit 11 and the input terminal unit 20 of the branch circuit body 6 are electrically connected, and the output side circuit unit 12 and the output terminal unit 8 of the branch circuit body 6 are electrically connected.

  The input electric wire 7 is connected to the input terminal portion 20 on the bottom surface of the cover plate portion 5a via the connection bolt 19, and the output electric wire 21 (see FIG. 3) from the load side is connected to the output terminal portion 8 for the connection bolt 19. Connected through. These connections are made by screwing a nut 22 (see FIG. 5) into the connection bolt 19.

  One end of the input wire 7 is connected to the plus electrode 23 (see FIG. 1) protruding from one battery 2 in a post shape, and the other end is connected to the branch circuit body 6. In order to connect the other end of the input electric wire 7 to the branch circuit body 6, the other end of the input electric wire 7 is provided with a terminal portion 7a as shown in FIG. This terminal portion 7 a is connected to the branch circuit body 6 via a connection bolt 19. That is, by passing the connecting bolt 19 penetrating the bolt hole 16 of the input side circuit portion 11 of the branch circuit body 6 into the terminal portion 7a, the input electric wire 7 and the input side circuit portion 11 of the branch circuit body 6 are electrically connected. (See FIGS. 2 and 7).

  As shown in FIG. 7, a terminal portion 21 a is formed at the terminal of the output electric wire 21 from the load side, and this terminal portion 21 a is connected to the output side circuit portion 12 of the branch circuit body 6 via the connection bolt 19. Connected. That is, the connection is made by penetrating the connecting bolt 19 that penetrates the bolt holes 17 and 18 of the output side circuit portion 12 of the branch circuit body 6 into the terminal portion 21a (see FIGS. 2 and 7).

  Next, an operation for electrically connecting the battery cover 1 of this embodiment to the battery 2 will be described.

  As shown in FIG. 4, connection bolts 19 that are press-fitted into the input side circuit portion 11 and the two output side circuit portions 12 of the branch circuit body 6 are extracted from the bottom surface of the cover plate portion 5 a of the cover body 5. Yes. Each connection bolt 19 is in a state of penetrating the input terminal portion 20 and the two output terminal portions 8.

  As shown in FIGS. 2, 3, 7 and 8, the electrical connection between the branch circuit body 6 and the vehicle load is as shown in FIGS. 2, 3, 7 and 8, with respect to the terminal portion 21a formed at the terminal of the output electric wire 21 from the load. The connection bolt 19 penetrating through the two output terminal portions 8 is allowed to pass through, and the nut 22 is screwed into the connection bolt 19.

  As shown in FIGS. 2, 3, 7 and 8, the branch circuit body 6 and the battery 2 are electrically connected to the terminal portion 7 a of the input wire 7 connected to the positive electrode 23 of the battery 2. The connection bolt 19 penetrating the input terminal portion 20 is passed through and the nut 22 is screwed into the connection bolt 19.

  In such a first embodiment, the cover body 5 covers the upper surfaces of the batteries 2 and 3, so that the battery cover 1 can protect the batteries 2 and 3 from an environment such as water and dust. Moreover, since the branch circuit body 6 for distributing the supply current from the battery 2 is embedded in the cover body 5, it is not necessary to connect a fuse box or a fuse unit for distributing and supplying the current of the battery 2 to the battery. Since such a battery cover 1 has a battery current distribution function and a battery 2 and 3 protection function, the number of components attached to the batteries 2 and 3 can be reduced. Further, since the number of parts is reduced, the types of molds for molding the parts to be attached to the batteries 2 and 3 can be reduced.

  Furthermore, since the fusible part 9 has the fusible part 15 that is melted by an overcurrent, the load can be protected from the overcurrent.

  Further, since the fusible part 9 is integrated with the branch circuit body 6 and the fusible part 9 and the branch circuit body 6 are embedded in the cover body 5, the number of parts for electrical connection is reduced. This makes electrical connection easier. In addition, the battery 2 and the load can be electrically connected only by handling the cover main body 5 and workability is improved.

[Second Embodiment]
FIGS. 11 to 19 show a second embodiment of the present invention, FIG. 11 is a perspective view showing the relationship between the battery cover and the battery, FIG. 12 is an enlarged perspective view of a portion N in FIG. 11, and FIG. FIG. 14 is a perspective view of a branch circuit body of this embodiment, FIG. 15 is a perspective view of a fusible part used in this embodiment, and FIG. 16 is a perspective view of the battery cover. FIG. 17 is a plan view of a battery cover attached to the battery, FIG. 18 is a front view of FIG. 17, and FIG. 19 is a side view of FIG.

  As shown in FIG. 11, the battery cover 51 of this embodiment has a cover body 55 having a size that covers the two batteries 2 and 3. The cover body 55 is formed of resin, and includes a rectangular plate-shaped cover plate portion 55a having a size obtained by combining the two batteries 2 and 3, and four peripheral wall portions 55b suspended from four sides of the cover plate portion 55a. Is formed by.

  In addition to the cover main body 55, the battery cover 51 includes the input electric wire 7, the branch circuit body 56, the input electric wire 7, two output terminal portions 58, and a fusible body portion 59 as shown in FIG. I have.

  The branch circuit body 56 is embedded in the cover plate portion 55 a of the cover body 55. That is, the cover main body 55 is formed by injecting resin in a state where the branch circuit body 56 is inserted into the mold.

  As shown in FIG. 14, the branch circuit body 56 is formed of a horizontally long conductive metal, and bolt holes 66, 67, 68 are formed at the center and both left and right ends. The central bolt hole 66 is connected to the input electric wire 7, and the bolt holes 67 and 68 at both ends are connected to the fusible part 59. In order to make these connections, connection bolts 19 similar to those shown in FIG. 5 are press-fitted into the respective bolt holes 66, 67 and 68. The connection bolt 19 is extracted from the bottom surface of the cover plate portion 55a of the cover main body 55, and the input electric wire 7 and the soluble body portion 59 are connected to the extracted portion.

  As shown in FIG. 12, the electrical connection between the input electric wire 7 and the branch circuit body 56 is performed by connecting bolts 19 extracted from the bolt holes 66 to the terminal portions 7 a provided at the ends of the input electric wires 7. And the nut 22 is screwed onto the connecting bolt 19 in the same manner as in FIG.

  In this embodiment, the two output terminal portions 58 are formed on the cover plate portion 55 a of the cover main body 55 so as to be separated from the branch circuit body 56. As shown in FIGS. 12 and 13, the two output terminal portions 58 are formed by washers fixed to the bottom surface of the cover plate portion 55a. When the connecting bolt 19 is press-fitted into the washer-like output terminal portion 58, the connecting bolt 19 is exposed from the cover plate portion 55a.

  FIG. 15 shows the fusible part 59 used in this embodiment. The fusible part 59 has a fusible electric wire 65 and a circuit body side terminal 63 and a load side terminal 64 attached to both terminal parts of the fusible electric wire 65 by caulking. The circuit body side terminal 63 is connected to the branch circuit body 56, and the load side terminal 64 is connected to the output electric wire 21 from the load side. In order to make these connections, connection holes 63a and 64a are formed in the circuit body side terminal 63 and the load side terminal 64, respectively.

  As shown in FIGS. 12 and 13, the circuit body side terminal 63 is electrically connected to the branch circuit body 56 by connecting the connection bolts 19 protruding from the bolt holes 67 and 68 at both ends of the branch circuit body 56. This is performed by passing through the connection hole 63a of the body side terminal 63 and screwing the nut 22 into the connection bolt 19.

  As shown in FIGS. 12 and 13, the electrical connection of the load side terminal 64 to the output electric wire 21 is such that the connection bolts 19 of the two output terminal portions 58 penetrate the output electric wire 21 through the terminal portion 21 a of the terminal. At the same time, the connecting hole 64 a of the load side terminal 64 is passed through and the nut 22 is screwed into the connecting bolt 19. Thereby, the terminal part 21a of the output electric wire 21 and the load side terminal 64 are fastened together by the nut 22, and the electrical connection between the load side terminal 64 and the output electric wire 21 is performed.

  With the above connection, the fusible body portion 59 is connected to the input electric wire 7 via the branch circuit body 56 and also connected to the output electric wire 21 via the output terminal portion 58. In this connected state, when an overcurrent flows from the battery 2, the fusible wire 65 of the fusible body portion 59 is melted and the battery 2 and the load are electrically disconnected. Thereby, the load can be protected from overcurrent.

  In the second embodiment, similarly to the first embodiment, the cover main body 55 covers the upper surfaces of the batteries 2 and 3, so that the battery cover 51 protects the batteries 2 and 3 from the environment such as water and dust. can do. Further, since the branch circuit body 56 for distributing the supply current from the battery 52 is embedded in the cover body 55, there is no need to connect a fuse box or fuse unit for distributing and supplying the current of the battery 52 to the battery. The number of parts attached to the batteries 2 and 3 can be reduced.

  In particular, in this embodiment, the fusible part 59 is formed by the fusible electric wire 65 and the circuit body side terminal 63 and the load side terminal 64 at both ends of the fusible electric wire 65 and provided outside the cover plate part 55a of the cover main body 55. Therefore, it is easy to replace the fusible part 59. For this reason, the replacement | exchange operation | work at the time of the meltable electric wire 65 fusing by overcurrent can be performed easily.

DESCRIPTION OF SYMBOLS 1, 51 Battery cover 2, 3 Battery 5, 55 Cover main body 6, 56 Branch circuit body 7 Input electric wire 8, 58 Output terminal part 9, 59 Soluble body part 13, 63 Circuit body side terminal 14, 64 Load side terminal 15 Soluble Part 23 Positive electrode 65 Fusible wire

Claims (4)

A battery cover that covers and protects the upper surface of the battery,
A cover body facing the upper surface of the battery, a branch circuit body that is embedded in the cover body and distributes a supply current from the battery, and a positive electrode of the battery and the branch circuit body are connected to the branch circuit body. An input electric wire for supplying current, an output terminal portion connected to the load side for supplying current from the battery to the load side, a load caused by overcurrent provided between the branch circuit body and the output terminal portion A battery cover, comprising: a fusible part that cuts off the battery side and the battery side. The battery cover according to claim 1,
The fusible part includes a circuit body side terminal connected to the branch circuit body, a load side terminal connected to the output terminal part, and a fusible part provided between the circuit body side terminal and the load side terminal. A battery cover comprising: The battery cover according to claim 2,
The circuit body side terminal, the load side terminal, and the fusible part are formed integrally with the branch circuit body, and the circuit body side terminal, the load side terminal, and the fusible part are embedded in the cover body together with the branch circuit body. A battery cover characterized by being made. The battery cover according to claim 2 or 3,
The battery cover, wherein the fusible part is made of a fusible electric wire that is melted by an overcurrent.

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