JP5994645B2 - Charger - Google Patents

Description

  The present invention relates to a charger that selectively charges a plurality of types of secondary batteries.

  Generally, when charging a plurality of types of secondary batteries, a charger corresponding to each type of battery is used. As a charger corresponding to a plurality of types of batteries, a charger having a terminal for identifying the type of the battery has been proposed. In this case, the battery side also needs to be provided with an identification terminal, which increases the manufacturing cost of the charger and the battery. In addition, a charger in which one terminal has a plurality of functions has been proposed. In this case, special specifications are required for the charger and the battery, and the manufacturing cost of the charger and the battery increases.

  Moreover, the charger provided with a some terminal is proposed corresponding to the battery from which arrangement | positioning of a terminal differs for every kind. In this case, the charger and the battery have a relatively simple configuration, and further, it is possible to reduce the accident of charging a battery that is not supported. However, there is a risk that unused terminals will contact the battery and damage the battery. Even if a dummy shape is provided in the battery, it is necessary to newly design the battery, and further, the battery design is limited. On the other hand, the charger connected to the terminal of a battery via the terminal unit for exclusive use according to the kind of battery is proposed (refer patent document 1).

JP 7-335268 A

  However, since the invention described in Patent Document 1 requires the same number of terminal units as the types of secondary batteries to be charged, there is a risk that the method of use becomes complicated and the manufacturing cost increases.

  In view of the above problems, an object of the present invention is to provide a charger that does not require a dedicated terminal unit corresponding to the type of secondary battery.

  In order to achieve the above object, according to a first aspect of the present invention, a first positive terminal (301) that supplies power for charging a first battery and power for charging a second battery different from the first battery are supplied. A main body (1) including a second positive electrode terminal (302) and a negative electrode terminal (304) selectively used for the first battery and the second battery, and the main body (1) in the first direction and the first direction. A charger comprising an adapter (2) that can be selectively attached to the main body (1) in a second direction different from the one direction, and the first battery and the second battery can be selectively loaded. In summary, the adapter (2) is attached to the main body (1) in the first direction, and when the first battery is loaded, the first positive terminal (301) and the negative terminal (304) are in contact with the first battery. The second positive terminal (302) is configured not to contact the first battery, and the second The second positive electrode terminal (302) and the negative electrode terminal (304) are in contact with the second battery, and the first positive electrode terminal (301) is in the first position. 2. It is comprised so that it may not contact a battery.

  ADVANTAGE OF THE INVENTION According to this invention, the charger which does not require the terminal unit for exclusive use according to the kind of secondary battery can be provided.

It is a typical perspective view explaining the charger which concerns on embodiment of this invention. It is a typical top view explaining the main body with which the charger which concerns on embodiment of this invention is provided. It is a typical top view explaining the adapter with which the charger concerning an embodiment of the invention is provided. It is a typical top view explaining the charger which concerns on embodiment of this invention. It is the end elevation seen from the AA direction of FIG. It is the end elevation seen from the BB direction of FIG. It is a typical perspective view explaining the case where the charger which concerns on embodiment of this invention charges a 2nd battery. It is the perspective view seen from the back side of FIG. It is a typical perspective view explaining the case where the charger which concerns on embodiment of this invention charges a 1st battery. It is the perspective view seen from the back side of FIG.

  Next, embodiments of the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals, and redundant description is omitted. Further, the embodiments described below exemplify elements and devices for embodying the technical idea of the present invention, and the technical idea of the present invention is the shape, structure, arrangement, etc. of components. Is not specified as follows. The technical idea of the present invention can be variously modified within the technical scope described in the claims.

(Charger)
As shown in FIG. 1, the charger according to the embodiment of the present invention is different from the main body 1 that selectively charges a plurality of types of secondary batteries, and the main body 1 in the first direction and the first direction. An adapter 2 that can be selectively attached to the main body 1 is provided in the second direction.

  In an embodiment of the present invention, a secondary battery that can be charged by a charger is a second battery of a different type from the first battery and the first battery, the first battery is a nickel metal hydride battery, and the second battery is a lithium ion battery. It will be described as a battery. The description will be made assuming that the attaching / detaching direction of the adapter 2 with respect to the main body 1 is a vertical direction, the first direction is a direction orthogonal to the attaching / detaching direction, and the second direction is a direction opposite to the first direction. That is, the second direction is a direction rotated by 180 ° from the first direction with respect to the rotation axis along the vertical direction.

  The main body 1 has a generally rectangular prism-shaped cavity portion 10 that opens upward, as a mounting portion to which the adapter 2 is mounted. The cavity portion 10 is a gap formed by one rectangular flat plate-like bottom portion 11 and four rectangular flat plate-like side wall portions 12 extending vertically from four sides of the bottom portion 11.

  As shown in FIG. 2, the bottom portion 11 has a first type indication 111 indicating the type of the first battery and a second type indication 112 indicating the type of the second battery on the upper surface. The first type indication 111 indicates “Ni-MH” indicating nickel hydrogen, which is the type of the first battery. The 2nd kind indication 112 shows "Li-ion" which shows lithium ion which is the kind of the 2nd battery. The arrangement of the first type indication 111 and the second type indication 112 has a point-symmetric plane pattern with the center of the bottom 11 as the center of symmetry.

  A pair of adapter guides 13 are formed on the inner surfaces of the two side wall portions 12 facing each other. Each adapter guide 13 is a rib-like rail extending in the vertical direction. The adapter guide 13 guides the adapter 2 to an appropriate position when the adapter 2 is selectively attached to the main body 1 in the first direction and the second direction.

  The two side wall portions 12 on which the adapter guides 13 are formed are each provided with a handle receiving portion 14 and a hook receiving portion 141 that are used when the adapter 2 is attached to and detached from the main body 1 at the upper central portion. The handle receiving part 14 is a notch part in which the height of the side wall part 12 is formed lower than the other part.

  The main body 1 includes a first positive terminal 301 for supplying power for charging the first battery, a second positive terminal 302 for supplying power for charging the second battery, a T terminal 303, and a negative terminal 304. The first positive electrode terminal 301, the second positive electrode terminal 302, the T terminal 303, and the negative electrode terminal 304 are sequentially arranged in the horizontal direction on one of the two side walls 12 on which the adapter guide 13 is not formed.

  The first positive terminal 301, the second positive terminal 302, the T terminal 303, and the negative terminal 304 are each formed of a leaf spring that extends in the vertical direction and is bent so as to protrude inside the cavity portion 10. The first positive terminal 301, the second positive terminal 302, the T terminal 303, and the negative terminal 304 have protrusions that protrude inside the cavity 10 at positions corresponding to the terminals of the first battery and the second battery, respectively. And a contact portion that contacts each terminal of the first battery and the second battery. The first positive terminal 301, the second positive terminal 302, the T terminal 303, and the negative terminal 304 are formed so as to be pushed back inward when pressed in the outward direction of the cavity portion 10.

  The first positive electrode terminal 301 contacts the positive electrode terminal of the first battery when charging the first battery. The second positive electrode terminal 302 contacts the positive electrode terminal of the second battery when charging the second battery.

  The T terminal 303 is a terminal commonly used for the first battery and the second battery. The T terminal 303 contacts the T terminal of the first battery when charging the first battery, and contacts the T terminal of the second battery when charging the second battery. The T terminal 303 is electrically connected to a thermistor or the like included in the first battery or the second battery. The T terminal 303 inputs a voltage corresponding to the internal temperature of the secondary battery being charged from the first battery or the second battery to the main body 1. The main body 1 can reduce accidents such as overcharging by stopping the supply of power to the secondary battery being charged according to the voltage input from the T terminal 303.

  The negative electrode terminal 304 is a terminal used in common for the first battery and the second battery. The negative terminal 304 is connected to the ground potential, and contacts the negative terminal of the first battery when charging the first battery, and contacts the negative terminal of the second battery when charging the second battery.

  The adapter 2 is roughly a rectangular parallelepiped box shape that opens the entire upper surface, and includes one rectangular flat plate bottom 21 and four rectangular flat plate side walls extending vertically from the four sides of the bottom 21. 12. The adapter 2 has a rectangular column-shaped cavity portion 20 as a loading portion into which the first battery and the second battery are selectively loaded. The cavity part 20 is a gap formed by the bottom part 21 and the side wall part 22. The adapter 2 can selectively load the first battery and the second battery. The adapter 2 can be integrally molded from, for example, a synthetic resin material.

  As shown in FIG. 3, the bottom portion 21 has an indication window 210 that selectively displays the first type indication 111 and the second type indication 112 of the main body 1 when the adapter 2 is attached to the main body 1. The marking window 210 is a through hole that opens from the upper surface to the lower surface.

  The indication window 210 is located above the first type indication 111 so that the first type indication 111 is visible through the indication window 210 with the adapter 2 mounted on the main body 1 in the first direction. The first type indication 111 is displayed. The marking window 210 is located above the second type marking 112 so that the second type marking 112 is visible through the marking window 210 with the adapter 2 mounted on the main body 1 in the second direction. The second type indication 112 is displayed.

  The bottom 21 has a first terminal marking 211 on the top surface for indicating the type and position of the terminal used for charging the first battery in a state where the adapter 2 is mounted on the main body 1 in the first direction. The bottom portion 21 has a second terminal marking 212 on the top surface for indicating the type and position of the terminal used for charging the second battery in a state where the adapter 2 is attached to the main body 1 in the second direction.

  A pair of first adapter guide grooves 231 and second adapter guide grooves 232 are formed on the outer surfaces of the two side wall portions 22 facing each other (see FIG. 1). The first adapter guide groove 231 and the second adapter guide groove 232 are grooves corresponding to the adapter guide 13 and extending in the vertical direction.

  When the adapter 2 is attached to the main body 1 in the first direction, the first adapter guide groove 231 and the adapter guide 13 correspond to each other so that the adapter 2 slides downward from above. When the adapter 2 is attached to the main body 1 in the second direction, the second adapter guide groove 232 and the adapter guide 13 correspond to each other and slide from the top to the bottom.

  The side wall portion 22 is gripped by the user when the adapter 2 is attached to or detached from the main body 1 at the center of the upper end of each of the two sheets formed with the first adapter guide groove 231 and the second adapter guide groove 232. Two handle portions 24 are provided. The handle portion 24 extends outward from the upper end portion of the side wall portion 22. The handle portion 24 is disposed on the handle receiving portion 14 when the adapter 2 is selectively attached to the main body in the first direction and the second direction. The handle receiving portion 14 has a shape that can be easily grasped by the user when the adapter 2 is removed.

  The two side wall portions 22 on which the handle portion 24 is formed are respectively protruded vertically from the upper end of the side wall portion 22 to both ends where the handle portion 24 is located. A handle slit 240 is formed. The two handle portions 24 can be displaced in opposite directions by elastically deforming portions sandwiched between the handle slits 240 of the side wall portion 22.

  Each of the two handle portions 24 includes a hook portion 241 for fixing the adapter 2 corresponding to the hook receiving portion 141 of the main body 1 below. Each of the handle portion 24 and the hook portion 241 has a two-fold rotationally symmetric topology with a perpendicular passing through the center of the bottom portion 21 as the center of symmetry. The hook portion 241 engages with the hook receiving portion 141 to fix the adapter 2 in a state where the adapter 2 is selectively attached to the main body 1 in the first direction and the second direction. The hook portion 241 is separated from the hook receiving portion 141 when the handle portion 24 is moved inward, and the fixation of the adapter 2 to the main body 1 is released.

  The side wall portion 22 is formed with two pairs of the first battery guide 251 and the second battery guide 252 having a different shape from the first battery guide 251 on the inner surfaces of the two sheets on which the handle portions 24 are formed. .

  Each of the first battery guides 251 is a rib-like rail extending in the vertical direction. The first battery guide 251 guides the first battery to a predetermined position when the adapter 2 is mounted on the main body in the first direction and the first battery is loaded. Each of the second battery guides 252 is a rib-like rail extending in the vertical direction, and has a plane pattern different from that of the first battery guide 251. The second battery guide 252 guides the second battery to a predetermined position when the adapter 2 is mounted on the main body in the second direction and the second battery is loaded.

  The adapter 2 has a first positive terminal slit 411, a first unused terminal slit 412, a first T terminal slit 413, and a second one on the one side of the two opposing sides where the handle portion 24 of the side wall portion 22 is not formed. 1 negative terminal slit 414. The adapter 2 includes a second non-use terminal slit 421, a second positive terminal slit 422, a second T terminal slit 423, 2 negative electrode terminal slits 424.

  The first positive terminal slit 411, the first unused terminal slit 412, the first T terminal slit 413, and the first negative terminal slit 414 are formed so as to penetrate from the one surface of the bottom portion 21 and the side wall portion 22 to the other surface, respectively. The first positive terminal slit 411, the first T terminal slit 413, and the first negative terminal slit 414 each extend vertically from a part of the bottom 21 to the upper part of the side wall 22. The first unused terminal slit 412 extends from a part of the bottom portion 21 to an intermediate portion of the side wall portion 22, and has an upper end position higher than the first positive terminal slit 411, the first T terminal slit 413, and the first negative terminal slit 414. Formed low.

  The first positive terminal slit 411, the first unused terminal slit 412, the first T terminal slit 413, and the first negative terminal slit 414 are respectively provided in the main body 1 when the adapter 2 is attached to the main body in the first direction. It is formed at a position corresponding to the first positive terminal 301, the second positive terminal 302, the T terminal 303 and the negative terminal 304.

  The second unused terminal slit 421, the second positive terminal slit 422, the second T terminal slit 423, and the second negative terminal slit 424 are formed so as to penetrate from one surface of the bottom portion 21 and the side wall portion 22 to the other surface, respectively. The second positive terminal slit 422, the second T terminal slit 423, and the second negative terminal slit 424 each extend in a vertical direction from a part of the bottom portion 21 to an upper portion of the side wall portion 22. The second unused terminal slit 421 extends from a part of the bottom portion 21 to an intermediate portion of the side wall portion 22 and has an upper end position that is higher than the second positive terminal slit 422, the second T terminal slit 423, and the second negative terminal slit 424. Formed low.

  The second unused terminal slit 421, the second positive terminal slit 422, the second T terminal slit 423, and the second negative terminal slit 424 are respectively provided in the main body 1 when the adapter 2 is attached to the main body in the second direction. It is formed at a position corresponding to the first positive terminal 301, the second positive terminal 302, the T terminal 303 and the negative terminal 304.

  Arrangement of the first positive terminal slit 411, the first unused terminal slit 412, the first T terminal slit 413, and the first negative terminal slit 414, the second unused terminal slit 421, the second positive terminal slit 422, and the second T terminal slit The arrangement of 423 and the second negative terminal slit 424 has a two-fold rotationally symmetric topology with a perpendicular passing through the center of the bottom 21 as the center of symmetry.

  For example, as shown in FIG. 4, when the adapter 2 is attached to the main body 1 in the second direction, the indication window 210 displays a second type indication 112 that indicates the type of the second battery. The second battery is loaded into the adapter 2 by being guided by the second battery guide 252. The adapter 2 is mounted on the main body 1 in the second direction, and is configured such that the second positive terminal 302, the T terminal 303, and the negative terminal 304 are in contact with the terminals of the second battery when the second battery is loaded. Has been.

  As shown in FIG. 5, the first positive electrode terminal 301 used for charging the first battery is deformed by being pressed against the edge of the second unused terminal slit 421, and the contact portion is outside the cavity portion 20. Displace in the direction. A contact surface P that is inclined along the first positive electrode terminal 301 and is in contact with the first positive electrode terminal 301 is formed at the edge of the second unused terminal slit 421. The first positive terminal 301 is pressed to the contact surface P and is deformed to a position where it does not contact the second battery.

  As shown in FIG. 6, the second positive terminal 302 used for charging the second battery is not pressed against the edge of the second positive terminal slit 422, and the contact portion is not displaced. Similarly, the T terminal 303 and the negative terminal 304 are not pressed against the edges of the second T terminal slit 423 and the second negative terminal slit 424, respectively, and the contact portions are not displaced.

  As described above, when the adapter 2 is attached to the main body 1 in the second direction and the second battery is loaded, the second positive terminal 302, the T terminal 303, and the negative terminal 304 are in contact with the terminals of the second battery. The first positive terminal 301 is configured not to contact the second battery.

  For example, as shown in FIGS. 7 and 8, the lithium ion battery 6 that is the second battery includes a second positive terminal 62, a second T terminal 63, a second negative terminal 64, and a second battery guide groove 65. Is provided. The lithium ion battery 6 is loaded into the adapter 2 when the second battery guide groove 65 slides corresponding to the second battery guide 252. The second positive terminal 62, the second T terminal 63, and the second negative terminal 64 are configured such that the adapter 2 is mounted on the main body 1 in the second direction, and the lithium ion battery 6 is mounted on the adapter 2 corresponding to the second battery guide 252. The second positive terminal 302, the T terminal 303, and the negative terminal 304 of the main body 1 are in contact with each other.

  The power input unit 35 provided on the back side of the main body 1 is a receptacle that inputs power for supplying power to the secondary battery charged by the main body 1 from an external power supply device such as an AC adapter.

  The first battery guide 251 does not mechanically correspond to the second battery guide groove 65 of the lithium ion battery 6, and the adapter 2 can load the lithium ion battery 6 at a predetermined position by the second battery guide 252. Further, even if the adapter 2 is erroneously attached to the main body 1 in the first direction and the lithium ion battery 6 is loaded on the second battery guide 252 side, the second positive terminal 62, the second T terminal 63, and Since the second negative terminal 64 is not in contact with each terminal of the main body 1, accidents such as erroneous charging can be reduced.

  When the adapter 2 is attached to the main body 1 in the first direction, the indication window 210 displays a first type indication 111 that indicates the type of the first battery. The first battery is loaded into the adapter 2 by being guided by the first battery guide 251. The adapter 2 is attached to the main body 1 in the first direction, and is configured such that the first positive terminal 301, the T terminal 303, and the negative terminal 304 are in contact with each terminal of the first battery when the first battery is loaded. Has been.

  The second positive terminal 302 is deformed by being pressed against the edge of the first unused terminal slit 412, and the contact part moves to the outside of the cavity part 20. A contact surface (not shown) that contacts the second positive terminal 302 is formed at the edge of the first unused terminal slit 412 so as to be inclined along the second positive terminal 302. The contact surface is pressed and deformed to a position where it does not contact the first battery.

  The first positive terminal 301, the T terminal 303, and the negative terminal 304 are not pressed against the edges of the first positive terminal slit 411, the first T terminal slit 413, and the first negative terminal slit 414, respectively, and the contact portions are not displaced.

  Thus, when the adapter 2 is mounted on the main body 1 in the first direction and the first battery is loaded, the first positive terminal 301, the T terminal 303, and the negative terminal 304 are in contact with the terminals of the first battery. The second positive terminal 302 is configured not to contact the first battery.

  For example, as shown in FIGS. 9 and 10, the nickel metal hydride battery 5 that is the first battery includes a first positive terminal 51, a first T terminal 53, a first negative terminal 54, and a first battery guide groove 55. Is provided. The nickel metal hydride battery 5 is loaded into the adapter 2 when the first battery guide groove 55 slides corresponding to the first battery guide 251. The first positive terminal 51, the first T terminal 53, and the first negative terminal 54 have the adapter 2 mounted in the main body 1 in the first direction and the nickel metal hydride battery 5 mounted in the adapter 2 corresponding to the first battery guide 251. The first positive terminal 301, the T terminal 303, and the negative terminal 304 of the main body 1 are in contact with each other.

  The second battery guide 252 does not mechanically correspond to the first battery guide groove 55 of the nickel metal hydride battery 5, and the adapter 2 can load the nickel metal hydride battery 5 into a predetermined position by the first battery guide 251. Furthermore, even if the adapter 2 is erroneously attached to the main body 1 in the second direction and the nickel metal hydride battery 5 is loaded on the first battery guide 251 side, the first positive electrode terminal 51, the first T terminal 53, and Since the first negative electrode terminal 54 is not in contact with each terminal of the main body 1, accidents such as erroneous charging can be reduced.

  According to the charger according to the embodiment of the present invention, the main body 1 and the adapter 2 are attached to a plurality of types of secondary batteries by determining the mounting direction of the adapter 2 according to the type of the secondary battery to be charged. Can be shared. Therefore, the charger according to the embodiment of the present invention does not require a dedicated terminal unit corresponding to the type of the secondary battery, and can reduce the manufacturing cost with a simple configuration.

  Moreover, according to the charger which concerns on embodiment of this invention, since the positive electrode terminal which is not used for the secondary battery to charge does not contact a secondary battery according to the mounting direction of the adapter 2, a secondary battery is damaged. The secondary battery can be easily designed without being attached. Furthermore, it can easily cope with existing secondary batteries in the market, and the development cost is low.

  Moreover, according to the charger which concerns on embodiment of this invention, the positive electrode terminal which is not used for the secondary battery to charge can be deformed using a slit, and the burden of a positive electrode terminal can be reduced.

  In addition, according to the charger according to the embodiment of the present invention, by having the first battery guide 251 and the second battery guide 252, it is possible to mechanically prevent the incompatible secondary battery from being loaded. Accidents such as charging can be reduced.

  In addition, according to the charger according to the embodiment of the present invention, the indication window 210 selectively displays the first type indication 111 and the second type indication 112 according to the mounting direction of the adapter 2. Type of secondary battery can be easily identified.

  Moreover, according to the charger which concerns on embodiment of this invention, since the adapter 2 can be integrally molded from a single synthetic resin material, manufacturing cost is low.

(Other embodiments)
As described above, the embodiments of the present invention have been described. However, it should not be understood that the descriptions and drawings constituting a part of this disclosure limit the present invention. From this disclosure, various alternative embodiments, examples and operational techniques will be apparent to those skilled in the art.

  For example, in the embodiment already described, the first unused terminal slit 412 and the second unused terminal slit 421 are not limited to the slit shape. The first unused terminal slit 412 and the second unused terminal slit 421 are configured as pressing parts that are deformed by pressing the first positive terminal 301 or the second positive terminal 302 and do not contact the second battery or the first battery. It only has to be done.

  In the embodiment described above, the first direction and the second direction are not limited to the opposite directions, and can be various other directions. In this case, what is necessary is just to change each part of the adapter 2 according to a 1st direction and a 2nd direction. In addition, the number of secondary batteries that can be charged by the charger is not limited to two, and charging is possible by setting the positive terminal of the charger to three or more types and the corresponding adapter installation direction to three or more directions. The number of secondary batteries can be three or more.

  In the above-described embodiment, the configuration in which the adapter 2 is used as a non-use terminal that is not used for charging by deforming any of the plurality of positive terminals is described. Any of the (first main electrode terminal), the negative electrode terminal (second main electrode terminal), and the T terminal may be used as an unused terminal. For example, the charger main body may include one positive terminal and a plurality of negative terminals, and the adapter may use any of the plurality of negative terminals as an unused terminal. In this case, of course, the plurality of negative terminals are connected to different potentials. In addition, the charger body includes a plurality of positive terminals, a negative terminal, and a T terminal, respectively, and the adapter selectively selects the positive terminal, the negative terminal, and the T terminal as unused terminals according to the secondary battery to be charged. You may do it.

  In addition, of course, the present invention includes various embodiments that are not described here, such as a configuration in which the above-described configurations are mutually applied. Therefore, the technical scope of the present invention is defined only by the invention specifying matters according to the scope of claims reasonable from the above description.

P Contact surface 1 Main body 2 Adapter 10 Cavity part 11 Bottom part 12 Side wall part 13 Adapter guide 14 Handle receiving part 20 Cavity part 21 Bottom part 22 Side wall part 24 Handle part 111 First type indication 112 Second type indication 141 Hook receiving part 210 Marking window 211 First terminal marking 212 Second terminal marking 231 First adapter guide groove 232 Second adapter guide groove 240 Handle slit 241 Hook portion 251 First battery guide 252 Second battery guide 301 First positive terminal 302 Second positive terminal 303 T Terminal 304 Negative electrode terminal 411 First positive terminal slit 412 First unused terminal slit 413 First T terminal slit 414 First negative terminal slit 421 Second unused terminal slit 422 Second positive terminal slit 423 Second T terminal slit 424 2 negative terminal slit

Claims (8)

A first positive terminal for supplying power for charging the first battery, a second positive terminal for supplying power for charging a second battery different from the first battery, and selectively used for the first battery and the second battery A main body comprising a negative electrode terminal;
An adapter that can be selectively attached to the main body in the first direction and a second direction different from the first direction with respect to the main body, and the first battery and the second battery can be selectively loaded. And
The adapter is attached to the main body in the first direction, and when the first battery is loaded, the first positive terminal and the negative terminal are in contact with the first battery, and the second positive terminal is The second positive electrode terminal and the negative electrode terminal are in contact with the second battery when the second battery is loaded when the second battery is loaded in the main body in the second direction. And the said 1st positive electrode terminal is comprised so that it may not contact the said 2nd battery, The charger characterized by the above-mentioned.   The adapter deforms the second positive terminal when mounted on the main body in the first direction, and deforms the first positive terminal when mounted on the main body in the second direction. The charger according to claim 1. The adapter has a first unused terminal slit and a second unused terminal slit extending in the attaching / detaching direction,
When the adapter is attached to the main body in the second direction, the first positive terminal is deformed by being pressed against an edge of the second unused terminal slit, and the second positive terminal is 3. The charger according to claim 1, wherein when the adapter is attached to the main body in the first direction, the adapter is deformed by being pressed by an edge of the first unused terminal slit. 4. .   The adapter has a first battery guide that guides the first battery to a predetermined position when the first battery is loaded, and a shape different from the first battery guide, and the second battery is loaded. The charger according to any one of claims 1 to 3, further comprising a second battery guide for guiding the second battery to a predetermined position. The main body has a first type indication indicating the type of the first battery, and a second type indication indicating the type of the second battery,
The adapter has an indication window for selectively displaying the first type indication and the second type indication,
The indication window displays the first type indication in a state where the adapter is attached to the main body in a first direction, and the second type in a state when the adapter is attached to the main body in a second direction. The charger according to any one of claims 1 to 4, wherein a sign is displayed.   The charger according to claim 1, wherein the adapter is integrally formed from a synthetic resin material.   The said 1st direction is a direction orthogonal to the attachment or detachment direction of the said adapter, and the said 2nd direction is a direction opposite to the said 1st direction, The any one of Claims 1-6 characterized by the above-mentioned. Charger as described in. The main body includes a T terminal for inputting a voltage according to the internal temperature of the first battery or the second battery,
The adapter is attached to the main body in the first direction, and when the first battery is loaded, the T terminal is configured to contact the first battery, and the adapter is connected to the main body in the second direction. The charging according to any one of claims 1 to 7, wherein the T terminal is configured to come into contact with the second battery when the second battery is mounted. vessel.

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