JP3427900B2 - Battery pack - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery pack for accommodating a battery cell and mounting it in a device such as a video camera, and more particularly to a battery pack which can be incorporated in the device or used externally.

[0002]

2. Description of the Related Art In a portable device such as a video camera, a battery pack accommodating battery cells is attached to the device as a power source.

[0003]

However, the conventional battery pack can only be mounted either inside the device or outside the device. In addition, since the terminals on the battery pack side are exposed and attached to the outside of the battery pack in a flat shape, when the battery cells are stored in the battery pack and the user puts them in a bag, etc., There was a risk of contact with other keys and other metal in the place, causing a short circuit and heat generation. Further, in the case of the battery pack external, terminals with a spring is provided on the device side, the spring is adapted to act in a direction perpendicular to the mounting direction of the battery Pas <br/> click Therefore, there is a problem that the attachment cannot be performed smoothly and the contact of the terminals is not stable.

The present invention has been made in view of the above circumstances, and can be easily attached to a device by either internal or external methods, and can prevent occurrence of a short-circuit accident. An object of the present invention is to provide a battery pack having the above structure.

[0005]

According to a first aspect of the present invention, there is provided a battery pack in which battery cells are housed and mounted in a device, wherein a first convex engaging portion provided in the device is engaged. A back wall portion having a recessed groove formed parallel to the longitudinal direction of the battery pack, and a second projection provided on the device at a position farthest from the back wall portion and connected to the back wall portion in a substantially arc shape. Of the pair of opposing side walls having an introducing portion for introducing the groove-like engaging portion and a concave engaging portion for engaging the second convex engaging portion provided in the equipment introduced from the introducing portion. An end surface portion and a bottom wall portion facing the back wall portion are provided, and only one end surface portion of the pair of end surface portions internally includes a concave connection terminal that is joined to the convex connection terminal of the device. In addition to having holes, one end of the concave groove on the back wall is open, and the bottom wall is the convex shape of the device. When the connection terminals are bonded to the concave connection terminal of the end surface portion, and having a locking hole to be engaged to the device.

A bottom wall portion of the battery pack according to claim 2.
Has an opening on the end face for checking the battery cell
It has a detection hole, and the detection hole and the concave groove are housed adjacent to each other.
It is characterized in that it is formed in a space between two battery cells .

[0007]

In the battery pack according to claim 1,
Due to the substantially arcuate shape formed on the side wall portion, the storage volume when incorporated in the device is reduced, and moreover, it is possible to prevent the front and back reverse insertion. Further, the recessed groove formed at the center of the back wall portion and opened at one end face is in paddle contact with the device, so that the backward and forward insertion can be prevented. When further inserted battery pack in the device, opposite 1
A convex connecting terminal provided inside the device is inserted into a hole provided in either one of the pair of end face portions, and is held by the concave connecting terminal. At this time, since the concave connection terminal as the terminal on the battery pack side is provided in the hole, metal or the like does not come into contact with each other to cause a short circuit. Also,
When installing the repack externally to the device, the
The convex engagement part provided is introduced, the introduced convex engagement
The part is engaged with the recess.

On the other hand, when the battery pack is externally attached to the equipment, the concave engagement portion provided on the side wall portion is engaged with the convex engagement portion provided on the equipment side to be attached. Convex
The connection of the flat connection terminals is the same as that of the built-in case. For both internal and external, Ru can be locked against the battery pack to the device via the lock hole.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the battery pack of the present invention will be described below with reference to the drawings.

1 to 7 show the configuration of an embodiment of the present invention. The battery pack 1 is formed in a rectangular parallelepiped shape having a vertically long outer shape, and the back wall portion 2 shown in FIG. 1 is provided with a groove 3 parallel to the longitudinal direction at the center in the width direction.
One end of the groove 3 on the side of the mounting direction shown by arrow A is open to the end face, and the other end is closed. The shoulder portions 4 on both sides of the back wall portion 2 in the width direction are formed in an arc shape in cross section.

On both side wall portions 5 shown in FIGS. 2 and 3 which are parallel to the longitudinal direction, there are provided two external claws 6 for engaging with locking pins 25 provided on the side surface of the device 21 side (not shown). The grooves are provided in parallel with each other in the longitudinal direction. And outside
The side wall 5 at the tip of the attaching claw 6 is formed with an introducing portion 8 that opens to the bottom wall portion 7, and the locking pin 25 passes through the introducing portion 8 and is located inside the external attaching nail 6. It is designed to engage.

As shown in FIG. 4, the bottom wall portion 7 provided in parallel with the back wall portion 2 is provided with a pair of inlets of the above-mentioned four introduction portions 8 on two opposite sides in the longitudinal direction. A detection hole 9 is provided. Further, another two detection holes 9 are provided on the center line in the width direction.
And a lock hole 10 are provided. Then, the battery cells housed in the battery pack 1 via the detection holes 9 (for example, the battery cells 31 in FIGS.
32) Check the, Do shown of the apparatus 21 side into the lock hole 10
The locking claw is engaged.

As shown in FIGS. 5 and 6, end faces 11 and 12 are provided at both ends in the longitudinal direction of the battery pack 1, and the end face 12 on the mounting direction side indicated by arrow A has a bottom wall. A pair of left and right recessed holes 13 is provided on the side of the portion 7. In the recessed hole 13, as shown in FIG.
4 are provided so as to face each other in the axial direction, and when the terminal 24 on the device 21 side is inserted into the recessed hole 13, the terminal 24 is held and crimped by the spring 14. A recess communicating with the recessed groove 3 of the back wall 2 and the detection hole 9 of the bottom wall 7 is formed at the center of the end surface 12 in the width direction.

Next, the operation of this embodiment will be described. First case of built-in battery pack 1 in a pack mounting hole 22 provided in the device 21 as shown in FIG. 8, a cross-sectional shape of the pack mounting hole 22 as shown in FIG. 9 equal to the cross-sectional shape of the battery pack 1 By doing so, the shoulder portion 4 of the battery pack 1 and the R portion on the inner circumference of the pack mounting hole 22 are in contact with each other, so that the front and back reverse insertion can be prevented. At this time, by increasing the radius of curvature R of each of the shoulder portion 4 and the pack mounting hole 22, the inner volume of the pack mounting hole 22 can be minimized. Further, the recess 23 formed in the back wall portion 2 of the battery pack 1 is engaged with the rib 23 provided on the inner peripheral upper portion of the pack mounting hole 22 to prevent the front-back reverse insertion. it can. Here for external
Since the claw 6 does not project from the outer periphery of the battery pack 1, it does not interfere with the built-in operation. Further, when the battery pack 1 is inserted into the pack mounting hole 22, the terminal 24 provided in the back of the pack mounting hole 22 so as to project in parallel with the insertion direction is provided with the recessed portion provided in the end surface portion 12 as shown in FIG. It is inserted into the hole 13 and held by a spring 14 shown in FIG. 7 to be electrically connected. At this time, the lock hole 10
The lock claw (not shown) on the device 21 side is engaged, and the battery pack
Ku1 is locked.

When the battery pack 1 is externally attached to the outside of the device 21 as shown in FIG. 11, the locking pin 25 provided on the side surface of the device 21 is attached by engaging with the external pawl 6. . At this time, if the length of the introduction portion 8 in the longitudinal direction is increased, the locking pin 25 can be easily inserted. The terminals 26 to be described later in the longitudinal direction of the mounting Stroke is the length of the external pawl 6
By making the stroke longer than, the insertion of the terminal 26 can be stabilized. Further, since the battery pack 1 is supported with its longitudinal direction being vertical, it is stably supported by the device 21.

As shown in FIG. 12, a pair of terminals 26 are vertically provided on the lower portion of the side surface of the device 21, and a pair of recessed holes 13 provided in one end face 12 of the battery pack 1.
Are electrically connected by inserting the terminals 26 into the respective terminals. At this time, as in the case of the built-in type, as shown in FIGS. 13 and 14, the terminal 26 is held by the pair of springs 14 provided in the recessed hole 13. If the spring constants of the pair of springs 14 are different, the stability of contact can be further ensured. The terminal 26 also has the effect of being self-cleaned when it is attached and detached.

According to this embodiment, one battery pack 1 can be used for the device 21 both in the case of the internal system and in the case of the external system. Further, since the spring 14, which is the terminal on the battery pack 1 side, is housed in the recessed hole 13,
It is possible to prevent the occurrence of a short circuit between terminals when the battery cell is stored in the battery pack 1 and carried alone. Further, since the detection hole 9 and the lock hole 10 face the surface on the device 21 side when externally attached, unsightly unevenness does not appear on the outer appearance side. In addition, the outer shape is downsized, and the space for the device can be saved.

[0018] Note that the battery pack 1 is intended for accommodating a normal one on the batteries, by properly setting the dimensions of the internal volume, a high voltage as shown in FIG. 15 and 16
In the case of storing two battery cells 31 in parallel,
To the low voltage battery cell 32 as shown in FIG.
The external dimensions can be minimized and used for both main storage. As shown in FIG. 15, the two bags are
If the telcel cells 31 are housed next to each other,
The groove 3 on the line and the detection hole 9 opened in the end face portion 12 are
It will be located in the space between the two battery cells 31.
It

[0019]

As described above, according to the battery pack of the first aspect, the outer periphery is provided with the recessed groove, the recessed engagement portion, and the hole including the recessed connection terminal therein. It can be used for both internal and external systems. In addition, it is possible to prevent a short circuit between the concave connection terminals when the unit is carried by itself. Moreover, the external appearance can be improved and the external size can be reduced. Further, since the lock hole is provided, when the battery pack and the device are joined, the device can be locked in a stable state. Also,
When attaching the battery pack to the equipment,
Introducing the convex engagement part provided on the vessel, the convex engagement introduced
Since the part is adapted to engage with the recess,
Can be easily inserted into.

Further, according to the battery pack of the second aspect, since the detection hole is provided in the bottom wall portion, the battery cell can be secured.
Can be recognized. Also, connect the detection hole and the concave groove
And provided in the separation part of the battery cells housed in two rows
Therefore, minimize the external dimensions of the battery pack.
You can

[Brief description of drawings]

FIG. 1 is a rear view showing the configuration of an embodiment of a battery pack of the present invention.

FIG. 2 is a left side view of FIG.

FIG. 3 is a right side view of FIG.

FIG. 4 is a rear view of FIG.

5 is an end view on the side opposite to the mounting direction in FIG.

FIG. 6 is an end view of the mounting direction side of FIG.

7 is a cross-sectional view of the concave hole of FIG.

FIG. 8 is an explanatory diagram showing a mounting direction when the battery pack according to the present embodiment is built into a device.

9 is an explanatory view showing the mounting structure of FIG.

FIG. 10 is an explanatory view showing the terminal connection structure of FIG.

FIG. 11 is an explanatory diagram showing a mounting direction when the battery pack according to the present embodiment is externally attached to a device.

12 is an explanatory view showing the terminal connection structure of FIG.

FIG. 13 is a cross-sectional view showing a state of a terminal and a recessed hole before connecting terminals in FIG.

14 is a cross-sectional view showing a state after connecting the terminals of FIG.

FIG. 15 is an explanatory plan view showing a state in which two high voltage cells are housed in the battery pack according to the present embodiment.

16 is an explanatory end view of FIG.

FIG. 17 is an explanatory plan view showing a state where five low voltage cells are housed in the battery pack according to the present embodiment.

FIG. 18 is an explanatory side view of FIG. 17.

19 is an explanatory end view of FIG.

[Explanation of reference numerals] 1 battery pack 2 back wall portion 3 concave groove 4 shoulder portion 5 side wall portion 6 externally attached claw 7 bottom wall portion 9 detection hole 10 lock holes 11 and 12 end face portion 13 recessed hole 14 spring 21 device 24 terminal 25 Locking pins 31, 32 Battery cell

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) H01M 2/10

Claims (2)

(57) [Claims] 1. A battery pack for accommodating a battery cell and mounting it in a device, wherein a concave shape formed parallel to a longitudinal direction of the battery pack is engaged with a first convex engaging portion provided in the device. Is connected to the back wall portion having a groove in a substantially arc shape and is farthest from the back wall portion.
To have a position, guiding the second convex engaging portion provided in the apparatus
Introducing part to enter, and the above introduced from the introducing part
Concave engagement for engaging the second convex engagement portion provided in the device
A side wall portion having a portion, a pair of end surface portions facing each other, and a bottom wall portion facing the back wall portion, and only one end surface portion of the pair of end surface portions.
Is a concave connection terminal that joins with the convex connection terminal of the device.
It has a hole inside and a concave groove in the back wall.
Is opened at one end thereof, and the bottom wall portion has a lock hole that is locked to the device when the convex connection terminal of the device is joined to the concave connection terminal of the end face part. And battery pack. 2. The bottom wall portion opens to the end surface portion,
It has a detection hole for confirming the battery cell, and the detection hole and the concave groove are formed in a space between two battery cells that are housed adjacent to each other. The battery pack according to claim 1.