WO2005078822A1

WO2005078822A1 - Battery accommodation equipment

Info

Publication number: WO2005078822A1
Application number: PCT/CN2004/000078
Authority: WO
Inventors: Daomo Jin; Zunzhi Wang; Bixia Lun; Cheng Wang; Jun Gou; Feng Lv; Yuanzhi Ju
Original assignee: Haier Group Corporation; Qing Dao Haier Digital Intelligence Technology Co., Ltd.
Priority date: 2004-01-20
Filing date: 2004-01-20
Publication date: 2005-08-25

Abstract

This invention provides battery accommodation equipment for accommodating the batteries which shape, size or thickness are different. According to one embodiment of the invention, the battery accommodation equipment comprises box having chamber for accommodating batteries; retaining members in horizontal direction are provided in the box, the said retaining members comprise rack and slip locking member; elasticity member and battery press member which is telescopic via the elasticity member are set on cover; and guide member is set for guiding the press member. According to another embodiment of the invention, battery accommodation equipment comprises the first box and the second box provided in the first box. The first box is able to accommodate the first battery, the second box is able to accommodate the second battery. Battery contact located inside the second box is connected with battery contact located outside the second box, when the second box is arranged into the first box, the connection contact is connected with the battery contact located inside the first box.

Description

Battery holding device

Technical field

The present invention relates generally to battery containing devices. More specifically, the present invention relates to a receiving device that can accommodate batteries of different shapes, sizes, or thicknesses.

technical background

With the development of technology, mobile phones are becoming more and more popular. As a necessary accessory for mobile phones, mobile phone batteries are usually nickel-metal hydride batteries or lithium batteries, which can maintain a longer working time. Compared with dry batteries, it has the advantages of longer power supply time and less waste disposal. The mobile phone battery may be eliminated after a certain period of use, and it is very beneficial to use the old mobile phone battery reasonably.

Battery-powered electric products are very popular in today's market, such as electric toys with broad market prospects. Existing electric products usually use dry batteries for power driving, and the dry batteries have a small electric energy reserve, so the working time is short, and because dry batteries are usually alkaline batteries, the harmful chemical components in them have great environmental pollution. In the existing battery-driven electric products, the battery accommodating device is usually a battery box provided on the product. The battery box is usually provided with a fixed structure and shape corresponding to a specific battery. Only a specific model and structure can be used. battery.

Generally, electric products driven by other batteries have lower requirements on battery performance than mobile phones. Therefore, old mobile phone batteries can generally meet the power supply requirements of these electric products. If the old mobile phone battery can be applied to these electric products, it can further utilize these old mobile phone batteries and reduce the use of dry batteries.

However, since the battery sizes of mobile phones of different manufacturers or models are different, a battery accommodating device capable of accommodating batteries of different shapes, sizes, or thicknesses is required.

In addition, users of electric products may not want to use mobile phone batteries, so in this case, it is also necessary to provide a device that can accommodate dry batteries, that is, the mobile phone battery and the dry battery can be replaced with each other in the battery storage device. The user provides a choice of multiple types of batteries. Summary of the invention

Aiming at the shortcomings that the above-mentioned battery is not firmly pressed in the battery accommodating device and is easy to be released, resulting in poor contact, a new battery accommodating device is provided.

According to an aspect of the present invention, a battery accommodating device is provided for accommodating batteries of different thicknesses, including a box body for mounting the battery, and a box cover provided on the top of the box body, wherein the box cover is on the box cover. An elastic element and a pressing member that is retractable by the elastic element are provided.

Preferably, the pressing member has a guide member, the guide member is provided with a limiting portion that prevents the pressing member from detaching, and the pressing member is provided with a limiting portion that cooperates with the limiting portion of the guide member.

Preferably, the guide member is an annular body that can be fixed on the box cover.

Preferably, the limiting portion of the guide member is an inner concave ring recessed into the annular body.

Preferably, the limiting portion of the pressing member is an inverted flange provided on a side wall of the pressing portion. Preferably, the battery accommodating device further includes a transition fixing member, the transition fixing member is fixed at the bottom of the box cover, and the guide device is fixed at a lower portion of the transition fixing member.

Preferably, the elastic element is a spring.

Preferably, a positioning member of the spring is provided on an upper portion of the pressing portion.

Preferably, the lower part of the transition fixing member and / or the upper part of the pressing portion is provided with a positioning member of the elastic element.

According to another aspect of the present invention, a battery accommodating device is provided for accommodating different types of batteries, including a first case body having an opening at the top and a first case cover, for receiving the first battery case. A battery body is provided with a battery contact, and the battery accommodating device is further provided with a second case body having a top opening, and the second case body for accommodating a second battery is disposed on the first case body. Wherein the second box body is provided with a battery contact, and the outer wall of the second box body is provided with a connection contact corresponding to the contact point of the first box body, and the connection contact and the second box body are provided The battery contacts are connected, and after the second case is installed in the first case, the connection contacts are The battery contacts of the first case are contacted and connected.

Preferably, a detachable second box cover is provided at an opening of the second box body.

Preferably, two sides of the opening of the second box body are provided with slots, and the second box cover is inserted into the slot to close the second box body.

Preferably, the second battery is a cylindrical battery.

Preferably, a separator is provided in the second case, and the separator divides the second case into a plurality of parts that can accommodate a single battery.

Preferably, a second box cover push-pull control block is provided on the top surface of the second box cover.

Preferably, the contacts in the first box body are retractable contacts.

Preferably, the first case is provided with an elastic clamping member capable of holding the first battery or the second case.

Preferably, the first box cover is provided with an elastic element and a pressing member that can be extended and contracted by the elastic element.

According to another aspect of the present invention, a battery accommodating device is provided for accommodating batteries of different sizes, including a box body for mounting batteries, wherein one or more battery holding devices are installed in the box body. To hold the battery in one or more directions.

Preferably, the battery holding device includes racks fixed on both sides of the box body and sliding clamping members provided between the racks.

Preferably, the battery holding device includes a holding plate and a holding plate spring.

Preferably, the sliding holding member has a laterally protruding baffle, which cooperates with the rack to fix the sliding holding member.

Preferably, the sliding holding member has an elastic member, and the elastic member controls the baffle to contract inwardly so that the sliding holding member can be pushed.

Preferably, the sliding holder has a cavity for receiving the elastic member, and the space has a side surface. An opening slot, the baffle is connected to the elastic member and extends out of the cavity from the opening slot.

Preferably, the sliding holder is provided with a control member, and the control member has an inclined surface to control the elastic member, thereby controlling the expansion and contraction of the baffle.

Preferably, the holding device includes two or more independent holding devices for holding the battery in two directions perpendicular to each other.

BRIEF DESCRIPTION OF THE DRAWINGS

A more complete understanding of the present invention and the attendant many advantages will be better understood and made clear by reference to the following detailed description in conjunction with the accompanying drawings. It should be understood that the drawings and their descriptions are for explanatory purposes only and do not limit the invention. Similar reference numerals in the drawings indicate the same or similar components, wherein-FIG. 1 is a perspective view of a battery containing device according to an aspect of the present invention, in which an elastic member, a guide member and a pressing member are in an assembled state, and a horizontal clamping device is also in an assembly Status

2 is a perspective view of a battery accommodating device according to an aspect of the present invention, in which an elastic member, a guide member, and a pressing member are in a disassembled state, and a horizontal clamping device is also in a disassembled state;

3 is a perspective view of a battery containing device according to another aspect of the present invention;

4 is a perspective view of a case of a battery containing device according to the present invention; and

Fig. 5 is a perspective view of a case of a battery accommodating device according to the present invention and a horizontal-direction holding device mounted therein.

detailed description

Numerous specific details are set forth in the following detailed description of the present invention to facilitate a full understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced without these specific details. In the examples described, well-known methods, processes, and components are not described in detail to avoid diluting the main content of the present invention.

Referring now to FIG. 1, FIG. 1 illustrates a battery receiving device according to an aspect of the present invention, which can be used to accommodate different types Size and structure of the battery. Preferably, it is used for accommodating a flat-shaped mobile phone battery.

The battery accommodating device shown in FIG. 1 includes a box body 1 for accommodating a battery. The box body 1 is a cavity structure with one side open, and includes four side walls 11, 12, 13, 14, and a bottom (see FIGS. 4 and 5). Preferably, the cross-section of the cavity of the case body 1 is larger than the lateral area of the ordinary model cell phone battery, so as to install the flat-shaped cell phone battery 2 in the case body 1.

The cavity of the box body 1 is provided with a holding device for the mobile phone battery 2 in a horizontal direction (a direction parallel to the bottom of the cavity). The horizontal holding device includes a vertical holding device and a horizontal holding device. The longitudinal clamping device includes a rack 3 provided between the side walls 12, 14 and the bottom of the box body, and a sliding holding member 4 disposed between the rack 3; the horizontal clamping device includes a clamp for holding the battery from one side Holding pieces 5.

As shown in FIG. 2, the sliding holder 4 includes a body 41 provided with a cavity in the lower portion, an opening 42 in the upper portion of the cavity, a telescopic button 43 passing through the hole 42, and a limit plate 44 provided in the lower portion of the button 43. Wherein, a limiting plate 44 having two inclined sides is provided in the cavity of the body 41 to prevent the button 43 from being loosened from the hole 42; and a spring is provided at the bottom of the limiting plate 44 to lift the limiting plate. The telescopic button 43 is extended from the hole 42. Further, grooves 45 communicating with the cavity are provided on both sides of the body 41, and a telescopic element 46 is provided in the cavity. The telescopic element 46 includes a telescopic baffle 460. A spring is provided in the body 41 to press the baffle 460 of the telescopic member 46 outward, so that the telescopic baffle protrudes from the groove 45. A guide rail 47 is provided on the bottom of the slide holder 4.

FIG. 5 shows a perspective view of the rack and the clamping member and the clamping member in an assembled state. The operation method of the horizontal clamping device will be described in detail below with reference to FIGS. 2 and 5.

The manner in which the rack 3 and the holding member 4 cooperate with each other to fix the battery 2 in the longitudinal direction is: first place the battery 2 on a side close to the side wall 11 at this time, there is a certain gap between the battery 2 and the holding member 4; Press the button 43 of the holding member 4 to move the limit plate 44 and the slopes on both sides thereof downward, and the retractable baffle 460 is retracted into the cavity of the body 41. Push the holding member 4 toward the battery 2 and hold the The part 4 presses the position of the battery 2 tightly, and the button 43 is released, so that the baffle plate 460 protrudes from the groove 45 on both sides of the body 41 into the tooth holes of the racks 3 on both sides, thereby positioning the holding part 4. The battery 2 is thereby fixed in the longitudinal direction.

The manner in which the holder 5 laterally fixes the battery is: The holder 5 includes a holding plate 51 and a guide rail 52, and the holder 5 is fixed On the side of the side walls 12 and / or 14, a clamping spring is also provided on the clamping member 5. The clamping plate 51 can clamp the battery 2 from one or both sides through the pulling or pushing of the spring. The battery 2 is fixed in the horizontal direction of the holder 4.

As shown in FIG. 1 and FIG. 2, a box cover 6 is provided at an upper portion of the box body 1 of the battery accommodating device, and a transition fixing plate 7 is provided at a lower portion of the box cover 6. As shown in FIG. 2, holes 71 are provided in the middle of the transition fixing plate 7, and the transition fixing plate can be fixed in the screw holes in the lower part of the box cover 1 through the holes 71; at the four corners of the lower bottom surface of the transition fixing plate 7 A fixing hole post 72 is provided.

A guide ring 8 having a rectangular cross section is provided at a lower portion of the transition fixing plate, and an inner concave ring 81 recessed inward is provided at a lower portion of the guide ring 8. Corresponding to the fixing hole column 72 of the transition fixing plate, a fixing hole 82 is provided on the outer wall of the guide ring.

As shown in FIG. 1 and FIG. 2, the lower part of the cover 6 of the battery accommodating device is provided with a pressing plate 9. The pressing plate 9 has a side wall 91, and an upper part of the side wall 91 is provided with an inverted flange 92.

As shown in FIG. 2, a spring 100 is provided on the upper surface of the pressing plate 9, and the spring 100 is sleeved on the cylindrical spring positioning member 101.

A method of fixing a battery in the above battery accommodating device will be described in detail below.

The transition fixing plate 7 is fixed to the bottom surface of the box body 1 through a hole 71 of the transition fixing plate with screws. Put the spring 100 on the fixing member 101 of the pressing plate 9, and place the pressing plate 9 in the guide ring 8. The recessed ring 81 at the lower part of the guide ring 8 cooperates with the flange 92 at the upper part of the side wall 91 of the pressing plate 9 to prevent the pressing plate from loosening from the guide ring. The fixing holes 82 on the outer wall of the guide ring 8 are correspondingly fitted on the fixing hole posts 72 on the four corners of the bottom of the transition fixing plate, and the guide ring is fixed on the transition fixing piece 7 by screws.

The flat cell phone battery 2 is placed in the cavity of the case 1. Press the button 43 downward to move the main body 41 and release the button at a position where the battery 2 can be fastened, so that the telescopic baffle 460 of the holder 4 is matched with the tooth hole of the rack 3, and the battery is in this direction On fixed. The clamping plate 51 of the clamping member 5 is pushed or pulled by the popping, so that the clamping member 5 fixes the battery 2 in the horizontal direction corresponding to the holding member 4.

As shown in FIG. 1, after the pressing plate is installed on the box cover 6, the pressing plate 9 is caused by the external thrust of the spring 100. The side wall 91 projects outward from the guide ring. When the thickness of the battery 2 installed in the case is thin, the pressing plate 9 can still press the battery 2 to firmly fix the battery 2 on the bottom of the case 1; and when the thickness of the battery 2 is thick, When the box cover is installed, the spring 100 can be retracted, and the thicker battery can also be fixed in the box body 1.

In order to firmly fix the box cover on the box body, as shown in FIGS. 1 and 2, a hook-shaped box cover spring piece 201 is provided on the box cover, and a corresponding card slot 202 is provided on the side wall 14 of the box body 1. The elastic piece 201 cooperates with the slot 202 to securely fix the box cover on the box body 1.

As shown in FIG. 1 and FIG. 2, in order to conveniently fix the battery accommodating device on the electric product and consider other possible functions and structural requirements, an auxiliary slot 110 is provided on the left side of the accommodating device, and on the right side of the accommodating device. A fixing plate 120 is provided.

As shown in FIG. 1, a battery electrode contact device 130 is provided at a lower portion of the containing device near the side wall 11. The electrode contact device 130 includes a base 131 and a columnar contact 132 provided on the base 131. The electrode contact device can be fixed on the bottom of the box body 1 by screws through the post hole 133 on the base 131.

It should be noted that, in the above specific embodiment, the transition fixing plate 7 is optional, because the guide ring 8 is directly fixed on the bottom of the box cover 6, and the function of the present invention can also be realized. The guide ring 8 is also optional, and the spring 100 is directly fixed between the box cover 6 and the pressing plate 9 by a simple fixing device, which can also achieve the function of the present invention, but this method may cause the pressing plate to be in the pressing process due to the lack of a guide ring. If the battery 2 is thin, or the spring force of the battery 2 is weak, the battery is not easily pressed.

According to the second aspect of the present invention, if a user wants to use a dry battery to replace a mobile phone battery, the present invention provides a second box body that replaces the original elastic guide and pressing member, thereby providing a battery accommodating device capable of accommodating the dry battery.

The battery accommodating device shown in FIG. 3 includes a first case 1. The box body 1 is a cavity structure, and includes four side walls 11, 12, 13, 14 and a bottom (see FIGS. 4 and 5). Preferably, the cross section of the cavity of the box body 1 is larger than the lateral area of the battery of a common mobile phone. A second case 301 having a top opening is provided in the case 1 for accommodating a dry battery. A separator 302 is provided in the case 301. As an example, the separator 302 divides the case 301 into three independent slots 303, and each slot 303 can accommodate a dry battery 300. As shown in FIG. 3 and FIG. 4, a retractable battery contact 132 is provided in the box body 1, and a connection contact 304 (not shown) corresponding to the contact 132 is provided on the bottom of the box body 301. 304 is connected to contacts (not shown) of the dry battery 300 in the case 301. After the case 301 is installed in the case 1, the connection contact 304 is in contact with the contact 132 and connected.

Slots 305 are provided on both sides of the top opening of the box body 301. Both sides of the box cover 306 of the box body 301 are inserted into the slot 305 to close the box body 301 for fixing the dry battery 300. The top surface of the box cover 306 A push-pull control block 307 is provided.

Hereinafter, referring to FIG. 3, the installation manner of the dry battery and the case 301 will be described. First install the dry battery 300 in the box body 301 in a series of positive and negative electrodes, insert the box cover 306 into the slots 305 on both sides of the top opening of the box body 301, seal the box body 301, and then install the box body 301 into the box Body 1.

As shown in FIG. 3, a horizontal direction (direction parallel to the cavity bottom) holding device of the box body 301 is provided in the box body 1. The horizontal direction holding device includes a longitudinal holding device and a horizontal holding device. The longitudinal clamping device includes a rack 3 provided between the side walls 12, 14 and the bottom of the box body, and a sliding holding member 4 disposed between the rack 3; the horizontal clamping device includes a clamp for holding the battery from one side Holding pieces 5.

As shown in FIG. 3, the sliding holder 4 includes a main body 41 provided with a cavity in the lower portion, an opening 42 in the upper portion of the cavity, a telescopic button 43 extending from the hole 42, and a limit plate 44 provided in the lower portion of the button 43. Wherein, a limiting plate 44 having two inclined sides is provided in the cavity of the body 41 to prevent the button 43 from being loosened from the hole 42; and a spring is provided at the bottom of the limiting plate 44 to lift the limiting plate. The telescopic button 43 is extended from the hole 42. Furthermore, grooves 45 communicating with the cavity are provided on both sides of the body 41, and a telescopic element 46 is provided in the cavity. The telescopic element 46 includes a telescopic baffle 460. A spring is provided in the body 41 to press the baffle 460 of the telescopic member 46 outward, so that the telescopic baffle protrudes from the groove 45. A guide rail 47 is provided on the bottom of the slide holder 4. FIG. 5 shows a perspective view of the rack and the clamping member and the clamping member in an assembled state. The operation method of the horizontal clamping device is described in detail below with reference to FIGS. 3 and 5.

The manner in which the rack 3 and the holding member 4 cooperate with each other to longitudinally fix the box body 301 is: first place the box body 301 on the side close to the side wall 11 at this time, there is a certain distance between the box body 301 and the holding member 4 Press the button 43 of the holding member 4 to move the limit plate 44 and the inclined surfaces on both sides thereof downward, and the retractable baffle 460 is retracted into the cavity of the body 41. Push the holding member 4 toward the box body 301 At the position where the clamping member 4 is pressed against the box body 301, the button 43 is released, so that the baffle plate 460 protrudes from the grooves 45 on both sides of the body 41 into the tooth holes of the racks 3 on both sides, so that the clamping member 4 Positioning. Thereby, the case 301 is fixed in the longitudinal direction.

The manner in which the clamping member 5 laterally fixes the box body 301 is: The clamping member 5 includes a clamping plate 51 and a guide rail 52, the clamping member 5 is fixed on one side of the side wall 12 and / or 14, and the clamping member 5 is further provided with There is a spring, and by the pulling or pushing of the spring, the clamping plate 51 can clamp the box body 301 from one or both sides, and fix the box body 301 in a horizontal direction corresponding to the holding member 4.

As shown in FIGS. 3 and 4, a battery electrode contact device 130 is provided at a lower portion of the receiving device on the side closer to the side wall 11. The electrode contact device 130 includes a base 131 and a columnar contact 132 provided on the base 131. The electrode contact device can be fixed on the bottom of the box body 1 by screws through the post hole 133 on the base 131.

As shown in FIG. 3, the upper part of the box body 1 of the battery containing device is provided with a box cover 6, a hook-shaped box cover spring piece 201 is provided on the box cover, and a corresponding card slot 202 is provided on the side wall 14 of the box body 1. The elastic piece 201 cooperates with the slot 202 to securely fix the box cover on the box body 1.

When operating the battery accommodating device, the battery 300 is first installed in the box body 301, the box body 301 is closed with the box cover 306, and then the box body 301 is installed in the box body 1, and the box cover 6 of the box body 61 is covered. The connection contact 304 on the bottom of the box body 301 is connected to the contact 132 in the box body 1, so that the dry battery 300 in the box body 301 provides electric power for electric products and drives the electric products (such as electric toys) to work.

It should be understood that, in the above specific implementation, the battery contacts 132 in the box body 1 may be provided at any other position in the box body 1 as needed, and the connection contacts 304 of the box body 301 may be correspondingly provided at Box 301 Corresponding position on the outer wall.

In the above detailed description, the method and apparatus of the present invention have been described with reference to specific exemplary embodiments of the present invention. However, it is apparent that various modifications and changes can be made to the present invention without departing from the broader spirit and scope of the present invention. The present description and drawings are to be regarded as illustrative in nature and not restrictive.

Claims

Claim

1. A battery accommodating device for accommodating batteries of different sizes, including a box body for installing batteries, wherein:

One or more battery holding devices are installed in the case to hold the battery in one or more directions.

2. The battery accommodating device according to claim 1, characterized in that the battery holding device comprises racks fixed on both sides of the box body and sliding holding members provided between the racks.

3. The battery accommodating device according to claim 1, wherein the battery holding device comprises a holding plate and a holding plate spring.

4. The battery accommodating device according to claim 2, wherein the slide holder has a side plate protruding laterally, and cooperates with the rack to fix the slide holder.

5. The battery accommodating device according to claim 4, wherein the slide holder has an elastic member, and the elastic member controls the shutter to contract inwardly so that the slide holder can be pushed.

6. The battery accommodating device according to claim 5, wherein the sliding holder has a cavity for accommodating the elastic member, the space has a side opening groove, and the baffle is connected to the elastic member and A cavity extends from the open slot.

7. The battery accommodating device according to claim 6, wherein the slide holder is provided with a control member, and the control member has an inclined surface to control the elastic member, thereby controlling the expansion and contraction of the baffle.

The battery accommodating device according to claim 1, wherein said holding means includes two or more independent holding means for holding the battery in two directions perpendicular to each other.

9. A battery accommodating device for accommodating batteries of different thicknesses, comprising a box body for mounting the battery and a box cover provided on the top of the box body, wherein:

The box cover is provided with an elastic element and a pressing member that can be extended and contracted by the elastic element.

10. The battery accommodating device according to claim 9, wherein the pressing member has a guide member, the guide member is provided with a stopper portion that prevents the pressing member from detaching, and the pressing member is provided with the guide member The limit part cooperates with the limit part.

The battery accommodating device according to claim 10, wherein the guide member is a ring-shaped body that can be fixed to the case cover.

The battery accommodating device according to claim 11, wherein the restricting portion of the guide member is a recessed ring recessed into the annular body.

13. The battery accommodating device according to claim 10, 11 or 12, wherein the limiting portion of the pressing member is divided into a turned-out flange provided on a side wall of the pressing portion.

The battery accommodating device according to claim 10, 11 or 12, wherein the battery accommodating device further comprises a transition fixing member, the transition fixing member is fixed on a bottom of the box cover, and guides the guide The device is fixed on the lower part of the transition fixture.

15. The battery accommodating device according to claim 13, wherein the battery accommodating device further comprises a transition fixing member, the transition fixing member is fixed at the bottom of the box cover, and the guide device is fixed at The lower part of the transition fixture is described.

16. The battery accommodating device according to claim 9, wherein the elastic element is a spring.

The battery accommodating device according to claim 16, wherein a positioning member of the spring is provided on an upper portion of the pressing portion.

18. The battery accommodating device according to claim 14, wherein a lower portion of the transition fixing member and / or an upper portion of the pressing portion is provided with a positioning member of the elastic element.

19. The battery accommodating device according to claim 15, wherein a lower portion of the transition fixing member and / or an upper portion of the pressing portion is provided with a positioning member of the elastic element.

20. A battery accommodating device for accommodating different types of batteries, including a first box body having an opening at the top and a first box cover, wherein a battery contact is provided in the first box body for receiving a first battery A point is characterized in that: the battery accommodating device is further provided with a second box body having a top opening, and the second box body for accommodating a second battery is disposed in the first box body, wherein:

A battery contact is provided in the second case, and a connection contact is provided on an outer wall of the second case corresponding to the contact of the first case, and the connection contact is in contact with the battery of the second case. Point connection, after the second box body is installed in the first box body, the connection contacts are in contact with the battery contacts of the first box body to be connected.

The battery accommodating device according to claim 20, wherein a detachable second box cover is provided at an opening of the second box body.

22. The battery accommodating device according to claim 21, a slot is provided on both sides of the mouth of the second box body, and the second box cover is inserted into the slot to close the second box body .

23. The battery accommodating device according to claim 20, wherein the second battery is a cylindrical battery.

24. The battery accommodating device according to claim 20, wherein a partition is provided in the second case, and the partition divides the second case into a plurality of parts that can accommodate a single battery.

25. The battery accommodating device according to claim 21 or 22, wherein a second box cover push-pull control block is provided on a top surface of the second box cover.

26. The battery accommodating device according to claim 20, wherein the contacts in the first case are retractable contacts.

27. The battery accommodating device according to claim 20, wherein the first case is provided with an elastic holder capable of holding the first battery or the second case.

28. The battery accommodating device according to claim 20, wherein the first case cover is provided with an elastic member, and a pressing member that is retractable by the elastic member.