JP2001325941A - Connection structure of battery for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To regulate a connection sequence of wiring terminals to a positive and a negative terminal of a battery for vehicle by the sequence with excellent safety. SOLUTION: For the connecting structure of a battery for vehicle connecting a positive terminal of wiring side Tp to a positive terminal of battery 30P and a negative terminal of wiring side Tn to a negative terminal of battery 30N, as an attachment and detachment preventing part 28 is connected to the negative terminal of wiring side Tn in order to prevent the operation of attaching and detaching the positive terminal of wiring side Tp to the positive terminal of battery 30P while the negative terminal of wiring side with the attachment and detachment preventing part is connected to the negative terminal of wiring side Tn, the attaching operation is started from attaching the positive terminal of wiring side Tp and detaching operation is started from detaching the negative terminal of wiring side Tn infallibly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle battery connection structure for electrically connecting a battery wiring to a terminal of a battery mounted on a vehicle.

[0002]

2. Description of the Related Art FIG. 5 shows an example of a conventional battery connection structure for a vehicle. A battery positive terminal 90P is provided on the upper surface of one corner of the illustrated battery BT,
A battery negative terminal 90N is provided on the upper surface of the other corner,
Each is projected upward. The battery positive terminal 90P is connected to a wiring-side positive terminal 92P provided at the terminal of the vehicle-mounted load-side wiring, and the battery negative terminal 90N is connected to a wiring-side negative terminal 92N provided at the terminal of the ground wire. It is to be combined.

Each of the wiring terminals 92P and 92N is formed by bending a conductive metal plate into a substantially C-shape at an intermediate portion thereof, and connecting the intermediate portion to the battery terminals 90P and 9N.
After loosely fitting the outside of 0N, the battery terminals 90P, 90N and the wiring terminals 92P, 92N are connected by tightening both ends of the wiring terminal 92 with bolts 94 or the like.

[0004]

Among the two battery terminals 90P and 90N, the battery negative terminal 90N is connected to the ground, while the battery positive terminal 90N is connected to the ground.
Since P has a higher potential than the ground, these battery terminals 90P and 90N are connected to the wiring-side terminals 92P and 90N.
As for the order of connecting P and 92N, it is preferable from the viewpoint of safety that first, the wiring-side positive terminal 92P is connected to the battery positive terminal 90P, and then the wiring-side negative terminal 92N is connected to the battery negative terminal 90N. Conversely, battery terminals 90P,
As for the order of removing the wiring-side terminals 92P and 92N from the battery 90N, it is preferable for safety to remove the wiring-side negative terminal 92N from the battery negative terminal 90N and then remove the wiring-side positive terminal 92P from the battery positive terminal 90P. By observing the order of attachment and detachment, it is possible to reliably prevent a situation in which the battery positive terminal 90P is short-circuited through a tool or the like that comes into contact with the battery positive terminal 90P.

However, in the conventional structure shown in FIG. 5, the battery can be actually attached and detached from either of the battery positive terminal 90P and the battery negative terminal 90N, and the order of attaching and detaching is not restricted at all. Terminal 90
Prior to P, the negative terminal 9 on the wiring side is connected to the negative terminal 90N of the battery.
2N is connected, or conversely, from the battery positive terminal 90P to the wiring side positive terminal 92P before the battery negative terminal 90N.
May be removed.

The present invention has been made in view of the above circumstances, and provides a battery connection structure having a simple structure and capable of regulating the order of attaching and detaching the wiring-side terminals to and from the battery positive terminal and the battery negative terminal in an order that is excellent in safety. With the goal.

[0007]

According to the present invention, a battery mounted on a vehicle is provided with a battery positive terminal and a battery negative terminal, and is connected to the battery positive terminal. A wiring-side positive terminal for electrically connecting the battery positive terminal to the load-side wiring; and a wiring side for electrically connecting the battery negative terminal to the ground wiring by being coupled to the battery negative terminal. In the battery connection structure for a vehicle having a negative terminal, the wiring-side positive terminal is connected to the wiring-side negative terminal, and the wiring-side positive terminal is connected to the battery positive terminal in a state where the wiring-side negative terminal is connected to the battery negative terminal. An attachment / detachment preventing portion for preventing work and work of detaching the wiring-side positive terminal from the battery positive terminal is provided.

According to this structure, even if the wiring negative terminal is erroneously connected to the battery negative terminal first, the attachment / detachment preventing portion of the wiring negative terminal is connected to the wiring positive terminal of the battery in the connected state. The latter connection cannot be made because the positive terminal is prevented from being connected. That is, the connection of the wiring side terminal to both battery terminals cannot be completed unless the order of connecting the wiring side positive terminal to the battery positive terminal first and then connecting the wiring side negative terminal to the battery negative terminal is not followed. Therefore, it is possible to reliably restrict the order of the terminal connection work to the order of excellent safety from the battery positive terminal to the battery negative terminal.

Conversely, in a state where the wiring side terminals are connected to both battery terminals, the work of detaching the wiring side terminal from the battery positive terminal is prevented by the attachment / detachment preventing portion. Unless it is removed, the wiring side positive terminal cannot be removed from the battery positive terminal. Therefore, the order of the removal operation can be reliably restricted to the order of excellent safety from the battery negative terminal to the battery positive terminal.

[0010] The attachment / detachment preventing portion includes a terminal that covers the battery positive terminal from the direction in which the wiring-side positive terminal is coupled to the battery positive terminal in a state where the wiring-side negative terminal is coupled to the battery negative terminal. Those having a cover portion are more preferable. According to this configuration, since the terminal cover portion hinders the battery positive terminal from approaching the wiring-side positive terminal from the connection direction, the connection can be reliably prevented.

Further, a fitting portion is provided around the battery negative terminal, which can be fitted only when the wiring-side negative terminal is connected to the battery negative terminal in a predetermined direction. The configuration is such that the wiring-side negative terminal can be coupled to the battery negative terminal only in a state where the wiring-side negative terminal is fitted to the mating portion, and the orientation of the wiring-side negative terminal to be fitted to the fitting portion. However, if the terminal cover portion of the wiring-side negative terminal is configured to cover the wiring-side positive terminal, the direction in which the wiring-side negative terminal is coupled to the battery negative terminal is the direction of the wiring-side negative terminal. Since the terminal cover is regulated so as to cover the battery positive terminal, the terminal cover can function more reliably to regulate the order of attachment and detachment.

[0012] Further, a reverse connection preventing portion for preventing the wiring side negative terminal from being erroneously connected to the battery positive terminal is provided on the surface of the battery, so that each terminal of the battery is provided. On the other hand, reverse connection in which the wiring side terminals are connected in reverse can also be prevented.

[0013]

FIG. 1 shows a first embodiment of the present invention.
A description will be given based on FIG.

The battery connecting structure of the vehicle shown in the drawing has a battery positive terminal 30P and a battery negative terminal 30N provided on the upper surface of a battery BT, a wiring-side positive terminal Tp coupled to the battery positive terminal 30P, and a battery negative terminal. And a wiring-side negative terminal Tn coupled to 30N.

First, the structure of the battery BT will be described. One rectangular corner of the battery BT has two rectangular recesses 32P and 32N adjacent to each other, and a fitting groove 34 connecting these recesses 32P and 32N. Are formed, the recess 32P and the fitting groove 34 form a fitting portion of the wiring-side positive terminal Tp, and the recess 32N and the fitting groove 34 form a fitting portion of the wiring-side negative terminal Tn. The concave battery 32P is provided with the battery positive terminal 30P, and the concave 32N is provided with the battery negative terminal 30N.

In this embodiment, both battery terminals 3
0P and 30N are constituted by bolts, and each of the recesses 3
It protrudes upward from the bottom surface of 2P, 32N. Also,
The battery terminal 30P is provided at an appropriate position on the bottom of the recess 32P.
Separately, a reverse contact prevention pin 33 protruding upward is provided, and a regulating pin insertion hole 37 that opens upward is provided on the bottom surface of the fitting groove 34.

On the other hand, the wiring-side positive terminal Tp has a conductor portion 10 for making an electrical connection between the battery positive terminal 30P and the load-side wire, and an insulating portion 20P partially covering the conductor portion 10. are doing.

The conductor 10 has a circular cup-shaped main body 12 that opens upward, and a terminal insertion hole 14 through which the battery positive terminal 30P can be inserted is formed at the center of the bottom wall. The size of the main body 12 is set to be large enough to accommodate the nut 31 screwed to the battery positive terminal 30P. A wiring connection portion 16 extends rearward in the horizontal direction from the main body portion 12, and a barrel portion 18 is integrally formed at the rear end. A terminal of a load-side wiring (not shown) connected to the on-vehicle load side is crimped to the barrel portion 18.

The insulating portion 20P has a substantially rectangular main portion covering the main portion 12 and the first half of the wiring connection portion 16, and has a shape that can be fitted into the recess 32P with almost no gap. I have. A pin insertion hole 23 into which the reverse connection prevention pin 33 can be inserted is provided in an appropriate position of the main body, and the ear 21 projects laterally from a lower portion of the side surface of the main body. This ear 2
The projecting position and shape of 1 are set so as to be able to be fitted into the fitting groove 34, and the thickness thereof is about half of the depth of the fitting groove 34. The ear 21 has a restriction pin insertion hole 21 a that matches the restriction pin insertion hole 37. Further, from the position just above the ear portion 21 to the upper end opening of the main body portion 12 of the conductor portion 10, the insulating portion 20P
A shallow fitting groove 22 is formed continuously on the upper surface of the main body and the upper surface of the main body 12 of the conductor 10.

The wiring-side negative terminal Tn includes a conductor 10 for electrically connecting the battery negative terminal 30N to the ground wiring, and an insulating portion 20 that partially covers the conductor 10.
N. The shape and structure of the conductor 10 are the same as the shape and structure of the wiring-side positive terminal Tp.

The insulating portion 20N has a substantially rectangular main body portion covering the main body portion 12 of the conductor portion 10 and the first half of the wiring connection portion 16 similarly to the insulating portion 20P, and has a shape of the concave portion 32N. The shape is such that it can be fitted into the device with almost no gap. However, the pin insertion hole 23 is not provided in the main body of the insulating portion 20N.

An attachment / detachment preventing portion 28 extends laterally from the upper side surface of the insulating portion 20N. This attachment / detachment preventing portion 28
In order from the base side (main body side), a wide base 24,
A small width relay portion 25 and a circular terminal cover 26 are integrally provided, and a regulating pin 27 projects downward from the base portion 24.

The attachment / detachment preventing portion 28 is in a state where the conductor portion 10 is connected to the battery negative terminal 30N, that is,
In a state where the main body of the insulating portion 20N is fitted into the concave portion 32N (hereinafter referred to as a “negative terminal coupling state”), a shape for preventing the coupling operation and the detachment operation of the wiring positive terminal Tp with respect to the battery positive terminal 30P. have.

More specifically, when the negative terminal is connected to the main body 24, the regulating pin 27 is connected to the pin insertion hole 21a.
And inserted into the pin insertion hole 37 so as to overlap the ear 21 in the fitting groove 34. The relay portion 25 has a shape fitted into the fitting groove 22 in the negative terminal connection state, and the terminal cover 26 has the wiring side positive terminal T in the negative terminal connection state.
It has a shape that closes the opening of the body portion 12 of the p conductor portion 10, in other words, a shape that covers the battery positive terminal 30P from above.

According to this structure, first, the wiring-side positive terminal Tp is connected to the battery positive terminal 30P, and then the wiring-side negative terminal Tn is connected to the battery negative terminal 30N. Can be combined.

Specifically, the ear 21 of the wiring-side positive terminal Tp
Is inserted into the insertion groove 34 and the reverse insertion preventing pin 33 is inserted into the pin insertion hole 23 while the terminal insertion hole 14 of the main body 12 in the conductor 10 of the wiring-side positive terminal Tp is inserted.
The battery positive terminal 30P is inserted into the battery positive terminal 30P, the nut 31 is screwed into the battery positive terminal 30P, and tightened by the tool TL.
Can be combined. Thereafter, the regulating pin 27 of the wiring-side negative terminal Tn is inserted into the pin insertion hole 21a and the pin insertion hole 37, and the base 24 of the attachment / detachment prevention unit 28 and the relay unit 2 are inserted.
5 and the terminal cover 26 into the fitting groove 34 and the fitting groove 2 respectively.
2 and the terminal insertion hole 1 of the main body 12 in the conductor 10 of the wiring side negative terminal Tn while being fitted into the opening of the main body 12.
4, the battery-side negative terminal TN can be connected to the battery negative terminal 30N by inserting the battery negative terminal 30N into the battery negative terminal 30N and screwing and tightening the nut 31 to the battery negative terminal 30N.

However, if the wiring-side negative terminal Tn is connected to the battery negative terminal 30N before the wiring-side positive terminal Tp, the terminal cover 2 of the wiring-side negative terminal Tn may be used.
6 covers the battery positive terminal 30P from above, so that the wiring-side positive terminal Tp cannot be coupled to the battery positive terminal 30P. That is, only in the order of the connection between the battery positive terminal 30P and the wiring-side positive terminal Tp → the connection between the battery negative terminal 30N and the wiring-side negative terminal Tn.
Not all terminals can be combined. By regulating the terminal connection order in this way, the safety at the time of the terminal connection operation is kept high.

On the other hand, when removing the wiring-side terminals Tp and Tn from the battery terminals 30P and 30N, the detachment preventing portions 28
Since the wiring-side positive terminal Tp is pressed down from above, the wiring-side positive terminal Tp is earlier than the wiring-side negative terminal Tn.
Cannot be removed from the battery positive terminal 30P. In other words, first, the wiring side negative terminal Tn is removed from the battery negative terminal 30N, and then the battery positive terminal 30P is removed.
The removal of all the terminals can be completed only in the order of removing the wiring-side positive terminal Tp from. By restricting the terminal detachment order in this way, the safety at the time of the terminal detachment operation is also kept high.

Further, in this embodiment, the reverse connection prevention pin 33 is provided only in the concave portion 32P in which the battery positive terminal 30P is provided, and the pin insertion hole 23 into which the reverse connection prevention pin 33 can be inserted is connected to the wiring side positive terminal. Since it is formed only at Tp, even if the wiring side negative terminal Tn is erroneously coupled to the battery positive terminal 30P, the reverse connection prevention pin 33
Can disturb the connection. Therefore, the connection (reverse connection) can be reliably prevented.

FIGS. 3 and 4 show a second embodiment of the present invention.
Shown in

In this embodiment, both battery terminals 4
0P and 40N have a substantially columnar shape, and a connection recess 42 that opens upward is formed on the upper portion thereof, and a screw hole 44 that opens upward on the bottom surface of the connection recess 42 is provided. The battery terminals 40P, 40N are embedded in the resin portion of the battery BT to a depth at which the upper surfaces of the battery terminals 40P, 40N are substantially flush with the bottom surfaces of the recesses 32P, 32N. The recess 32P is provided in the recess 3
It is one step deeper than 2N and the fitting groove 34.

On the other hand, the wiring side terminal Tp is constituted by the conductor portion 10 and an insulating portion 50P partially covering the conductor portion, and the wiring side negative terminal Tn is constituted by the conductor portion 10 and the insulating portion 50N partially covering the conductor portion 10. I have. The structure of each conductor 10 is substantially the same as the structure of the conductor 10 in the first embodiment, but the height of the main body 12 is set to be slightly larger, and To the recesses 32P, 32 of the battery terminals 40P, 40N.
It is possible to fit into N with almost no gap. A bolt insertion hole 14 ′ is formed in the bottom wall of the main body 12 instead of the terminal insertion hole 14.

The insulating portions 50P, 5 of the wiring side terminals Tp, Tn
0N integrally includes a main body covering portion 52 covering the entire upper portion of the main body portion 12 and a straight portion 54 extending rearward from the main body covering portion 52 and covering the front half of the wiring connection portion 16. Further, in the wiring side negative terminal Tn, an arm portion 56 extends from the main body covering portion 52 toward the wiring side positive terminal side, and a terminal fitting portion (terminal cover portion) protruding downward from the lower surface of the distal end portion of the arm portion 56. ) 58 are formed. The width dimension of the arm section 56 is a dimension that can be fitted into the fitting groove 34, and the size and position of the terminal fitting section 58 are
The main body 12 is connected to the connection recess 4 of the battery negative terminal 40N.
2 and the arm portion 56 is fitted in the fitting groove 34, and the terminal fitting portion 58 has a size and a position where it is fitted into the upper opening of the main body portion 12 of the wiring-side positive terminal Tp. Is set.

Also in this battery connection structure, first, the wiring-side positive terminal Tp is connected to the battery positive terminal 40P,
Thereafter, by taking the procedure of connecting the wiring side negative terminal Tn to the battery negative terminal 40N, both the positive and negative terminals can be connected.

Specifically, the main body 1 of the wiring-side positive terminal Tp
2 is inserted into the connection recess 42 of the battery positive terminal 40P, and a bolt 46 is inserted from above into the bolt insertion hole 14 and screwed into the screw hole 44, thereby connecting the battery positive terminal 40P and the wiring side. Coupling and electrical connection with the positive terminal Tp can be performed. Thereafter, the arm portion 56 and the terminal fitting portion 58 of the wiring side negative terminal Tp are inserted into the fitting groove 34 and the body portion 12 of the wiring side positive terminal Tp, respectively. The downward projecting portion is connected to the connection concave portion 42 of the battery negative terminal
By inserting the bolt 46 from above into the bolt insertion hole 14 and screwing it into the screw hole 44, the battery negative terminal 40N and the wiring-side negative terminal Tn can be connected and electrically connected.

However, if the wiring-side negative terminal Tn is connected to the battery negative terminal 40N before the wiring-side positive terminal Tp, the terminal fitting portion 58 of the wiring-side negative terminal Tn is inserted into the battery positive terminal 40P. Since the connection concave portion 42 is covered from above, the wiring-side positive terminal Tp cannot be coupled to the battery positive terminal 40P. That is,
Connection between battery positive terminal 40P and wiring-side positive terminal Tp →
The connection of all the terminals can be completed only in the order of the connection between the battery negative terminal 30N and the wiring-side negative terminal Tn. By regulating the terminal connection order in this way, the safety at the time of the terminal connection operation is kept high.

On the other hand, when removing the wiring side terminals Tp and Tn from the battery terminals 40P and 40N, the arm 5
Since the wiring-side positive terminal Tp is pressed from above by the 6 and the terminal fitting portion 58, the wiring-side positive terminal Tp cannot be removed from the battery positive terminal 40P before the wiring-side negative terminal Tn. In other words, the removal of all the terminals can be completed only in the order of removing the wiring-side negative terminal Tn from the battery negative terminal 40N and then removing the wiring-side positive terminal Tp from the battery positive terminal 40P. By restricting the terminal detachment order in this way, the safety at the time of the terminal detachment operation is also kept high.

Further, in this embodiment, since the battery terminals 40P and 40N have a shape having the connection concave portion 42 and are substantially embedded in the battery BT, a tool or the like is inadvertently provided with a tool or the like. , 40
Contact with N can be effectively prevented.

Note that the present invention is not limited to the above-described embodiment, and for example, the following embodiment can be adopted.

In the above embodiment, the attachment / detachment preventing portion
Although the terminal cover 26 and the terminal fitting portion 58 that cover the battery positive terminal from above (that is, from the direction of connection between the battery positive terminal and the wiring-side positive terminal) are provided on the wiring-side negative terminal,
The attachment / detachment preventing portion only needs to be at least an obstacle to the connection and detachment of the battery positive terminal and the wiring-side positive terminal. For example, in FIG. 4, not the battery positive terminal 40P but the peripheral battery portion (for example, the wiring-side positive terminal). 50P
(The part to which the main body covering portion 52 is attached). However, as described above, by providing a terminal cover portion that covers all (or a part of) the battery terminals on the wiring-side negative terminal, it is possible to more reliably regulate the coupling order and the detachment order. Become.

A recess 32 provided on the battery BT side
P, 32N and the fitting groove 34 can be omitted as appropriate. However, by these formations, the direction in which the wiring-side negative terminal Tn is mounted on the battery BT is restricted to the direction in which the attachment / detachment preventing portion of the wiring-side negative terminal Tn prevents attachment / detachment of the battery positive terminal and the wiring-side positive terminal. This allows the attachment / detachment preventing portion to function more reliably.

In the first embodiment, when both battery terminals 30P and 30N are male terminals in the form of bolts,
In the second embodiment, both battery terminals 40P, 4P
Although the case where 0N is a female terminal having the connection concave portion 42 is shown, for example, if the battery positive terminal is a female terminal and the battery negative terminal is a male terminal, there is an advantage that so-called reverse connection can be reliably prevented. Also, in the conventional battery connection structure as shown in FIG. 5, it is possible to regulate the attachment / detachment order by providing an appropriate attachment / detachment preventing portion at the wiring-side negative terminal.

[0043]

As described above, according to the present invention, the operation in which the wiring-side positive terminal is connected to the battery-side positive terminal in the connected state to the wiring-side negative terminal connected to the battery-negative terminal, A detachment prevention part that prevents the work of detaching the wiring-side positive terminal is provided. With such a simple structure, the order of attaching and detaching the wiring-side terminal to and from the battery positive terminal and battery negative terminal is regulated to an order that is excellent in safety. There is an effect that can be done.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a vehicle battery connection structure according to a first embodiment of the present invention.

FIG. 2 is a sectional front view of the vehicle battery connection structure according to the first embodiment of the present invention.

FIG. 3 is a perspective view of a battery connection structure for a vehicle according to a second embodiment of the present invention.

FIG. 4 is a sectional front view of a battery connection structure for a vehicle according to a second embodiment of the present invention.

FIG. 5 is a perspective view showing an example of a conventional battery connection structure of a vehicle.

[Explanation of symbols]

 Tp Wiring side positive terminal Tn Wiring side negative terminal 10 Conductor part 12 Body part 20P, 20N Insulation part 26 Terminal cover (Terminal cover part) 28 Detachment prevention part 30P, 40P Battery positive terminal 30N, 40N Battery negative terminal 50P, 50N Insulation part 56 Arm part (removal prevention part) 58 Terminal fitting part (terminal cover part)

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Yoshihiro Kumazawa 1-7-10 Kikuzumi, Minami-ku, Nagoya-shi, Aichi F-term in Harness Research Institute, Inc. (Reference) 5H022 BB03 CC04 CC10 CC12 KK04

Claims (4)

[Claims] A battery mounted on a vehicle is provided with a battery positive terminal and a battery negative terminal,
A wiring-side positive terminal electrically connected to the battery positive terminal and the load-side wiring by being coupled to the battery positive terminal; and a battery negative terminal and a ground wiring being coupled to the battery negative terminal. And a wiring-side negative terminal for electrically connecting the battery-side negative terminal to the wiring-side negative terminal. A battery connection structure for a vehicle, comprising: a detachment preventing portion for preventing an operation of connecting the wiring-side positive terminal and an operation of detaching the wiring-side positive terminal from the battery positive terminal. 2. The battery connection structure for a vehicle according to claim 1, wherein the attachment / detachment preventing portion connects the battery positive terminal to the battery positive terminal in a state where the wiring-side negative terminal is coupled to the battery negative terminal. And a terminal cover portion for covering from a direction in which the wiring-side positive terminal is coupled. 3. The vehicle battery connection structure according to claim 2, wherein the wiring-side negative terminal is fitted around the battery negative terminal only when the wiring-side negative terminal is coupled to the battery negative terminal in a predetermined direction. And the wiring-side negative terminal can be connected to the battery negative terminal only in a state where the wiring-side negative terminal is fitted to the fitting portion. A battery connection structure for a vehicle, wherein the direction of the wiring-side negative terminal fitted to the portion is such that the terminal cover of the wiring-side negative terminal covers the wiring-side positive terminal. 4. The battery connection structure for a vehicle according to claim 1, wherein the wiring-side negative terminal is prevented from being erroneously connected to the battery positive terminal on the surface of the battery. A battery connection structure for a vehicle, comprising: a reverse connection preventing portion.