JPH0739314Y2 - Charger - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a charging device capable of charging various types of batteries having different battery terminal positions for battery identification.

[Prior Art] In recent years, portable transceivers have been widely used in the field of communication, and rechargeable nickel-cadmium batteries are used as the power source of the portable transceivers. In such a portable transceiver, a nickel-cadmium battery having a battery voltage or a battery capacity suitable for the portable transceiver can be selected and mounted depending on the purpose of use such as communication distance or use time.
Therefore, in this type of nickel-cadmium battery, the outer dimensions are the same, and the positions of the terminals provided on one side surface of the nickel-cadmium battery are different according to the specifications of the battery in order to identify the battery.

When the battery capacity of the nickel-cadmium battery is reduced due to use, the battery is charged by a charging device and used repeatedly.

[Problems to be solved by the invention] Nickel used in the above-mentioned portable transceiver
When charging a cadmium battery, use a charging device that matches the terminal position of the nickel-cadmium battery.
When charging various types of nickel-cadmium batteries having different positions of terminals provided on one side of the battery, there is a disadvantage in that it is necessary to use separate charging devices corresponding to the respective terminal positions. Therefore, a charging device that can be commonly used for charging various types of nickel-cadmium batteries having different terminal positions has been considered. However, the charging device
The same number of positive electrode terminals for charging as nickel-cadmium batteries having different terminal positions that can be mounted for charging are required, and these positive electrode terminals for charging must be arranged in parallel in the charging device. However, since the nickel-cadmium batteries have the same outer dimensions, there is a problem that there is a limit to the number of charging positive electrodes that can be arranged in parallel. Therefore, there is a problem that it is not possible to obtain a charging device that can be commonly used for all kinds of nickel-cadmium batteries having different terminal positions.

In view of the above problems, the present invention uses a number of positive electrode terminals for charging that are smaller than the number of types of batteries that can be mounted for charging, and uses various types of nickel-type terminals having different terminal positions and more than the number of positive electrode terminals for charging. An object of the present invention is to provide a charging device that can be charged by sharing a cadmium battery.

[Means for Solving the Problems]

The charging device according to the present invention has the same shape and can be charged by mounting various types of batteries having different terminal positions according to the battery voltage, which is smaller than the number of types of batteries that can be mounted for charging. Is provided with a positive electrode for charging, and a battery discriminating means including a logic circuit for discriminating a specific battery connected to the positive electrode for charging, and a charging current and a charging voltage in response to the output of the battery discriminating means. And a charging control means for controlling.

[Action]

Connect the terminal of the battery to be charged to the charging positive terminal. The battery discriminating means discriminates and specifies the battery to be charged in relation to the battery voltage given to the positive electrode for charging. The battery is charged according to the specified battery voltage.

As a result, the number of positive electrode terminals for charging can be smaller than the number of types of batteries having different terminal positions.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the drawings showing an embodiment thereof.
FIG. 1 is a block diagram of a charging device according to the present invention, FIG. 2 is a perspective view of a nickel-cadmium battery having different battery terminal positions, and FIG. 3 is a block diagram of the charging device.

In FIG. 1, a battery inlet / outlet 1a is opened on the upper surface of the charging device 1. For example, a nickel-cadmium battery (hereinafter referred to as a battery) 2T to be charged is inserted into the battery inlet / outlet 1a and attached to the charging device 1. Battery installed 2T
The battery positive terminals 2a, 2b and the battery negative terminal 2c provided on the lower one side surface of the charging positive terminal 3a, 3b and the negative electrode terminal 3c for charging which are erected so as to be in contact with them in the charging device 1. Is in contact with. The charging device 1 has a built-in power supply unit, which will be described later, including a power supply transformer and a rectifier circuit (not shown) connected to an AC power supply, and a control unit that controls the charging current of the battery supplied from the power supply unit. Etc. are built in. Therefore, by connecting the charging device 1 to the AC power source, the installed battery is charged.

Each of the batteries 2R, 2S, 2T has the same outer shape and dimensions as shown in FIGS. 2 (A), (B), (C). Battery positive terminals 2a, 2b and battery negative terminal 2
c is provided as appropriate. The battery 2R shown in FIG. 2A has a battery voltage of 4 V, for example, and has a battery positive terminal 2b provided near the center of one side surface and a battery negative terminal 2c provided near the right end.

The battery 2S shown in FIG. 2B has a battery voltage of 6 V, for example, and has a battery positive terminal 2a near the left end of one side and a battery negative terminal 2c near the right end. The battery 2T shown in FIG. 2 (C) is provided with the battery positive terminals 2a, 2b and the battery negative terminal 2c at the same positions as the battery positive terminals 2a, 2b and the battery negative terminal 2c described above. The battery voltages at the terminals 2a and 2b are, for example, 4V and 4V.

When the battery 2R shown in FIG. 2 (A) is attached to the charging device 1 by installing the battery positive terminals 2a, 2b and the battery negative terminal 2c in this way, the battery positive and negative terminals 2b, 2c are When the battery 2R shown in FIG. 2 (B) is attached, the battery positive and negative terminals 2a, 2c are in contact with the positive and negative terminals 3b, 3c for charging.
Contacts the positive and negative terminals 3a, 3c for charging, and when the battery 2T shown in FIG. 2 (C) is installed, the positive and negative terminals 2a, 2
b and 2c contact the positive and negative terminals 3a, 3b and 3c for charging.

In FIG. 3, the positive electrode terminal 3a for charging is connected to the connection detection unit 10 and the charging control unit 12 to which the DC power is supplied from the power supply unit 11. The charging positive electrode terminal 3b is connected to the connection detection unit 13 and the charging control unit 12. Connection detector 10 and
Both the outputs S ₁₀ and S ₁₃ of ₁₃ are given to the battery determination units 14, 15, and 16. The outputs S ₁₄ and S ₁₅ of the battery determination units 14, 15, 16 are given to the voltage level switching unit 17 and the charging current control unit 18, and the outputs of the voltage level switching unit 17 and the charging current control unit 18 are both the charging control unit. Giving to 12. The charging negative electrode terminal 3c is grounded, and the negative electrode side of the power supply unit 11 is grounded.

The battery discriminating units 14, 15, 16 are each configured as shown in FIG. The output S 10 of the connection detector ₁₀ is input to one input terminal 20a of the NAND gate 20 and the other input terminal 21b of the NAND gate 21. The output S 13 of the connection detector ₁₃ is input to one input terminal 22a of the NAND gate 22 and one input terminal 21a of the NAND gate 21. The output of the NAND gate 21 is the other input terminal 20 of the NAND gate 20.
b and the other input terminal 22b of the NAND gate 22. Then, the battery discriminating unit 14 outputs only the output of the NAND gate 22 as the output S ₁₄ of the battery discriminating unit 14, and the battery discriminating unit 15 outputs only the output of the NAND gate 20 as the output S ₁₅ of the battery discriminating unit 15. The discrimination unit 16 outputs only the output of the NAND gate 21 as the output S ₁₆ of the battery discrimination unit 16.

Next, the charging device configured as described above is used to charge various types of batteries having different battery terminal positions as shown in FIGS.
This will be described with reference to FIGS. 3 and 4. When the charging device 1 is connected to an AC power supply (not shown), the power supply unit 11 changes to the charging control unit 12
A voltage is applied to the connection detecting units 10 and 13 via. Then, for example, to charge the battery 2R, from the battery inlet / outlet 1a to the battery 2R
When the battery is inserted and attached to the charging device 1, the battery positive and negative terminals 2b and 2c of the battery 2R are charged positive and negative terminals 3b and 3c as described above.
Contact with. As a result, the terminal voltage of the battery 2R is supplied from the charging positive electrode terminal 3b to the connection detection unit 13, and the connection detection unit 13 supplies the output S ₁₃ of "H" to the battery determination units 14, 15, 16. Therefore, the input terminals 21a and 22a of the NAND gates 21 and 22 in the battery determining units 14, 15 and 16 are both "H". In addition, since the terminal voltage of the battery 2R is not input to the connection detection unit 10, the output S
₁₀ is "L", and one input terminal 20a and N of the NAND gate 20
The other input terminals 21b of the AND gate 21 are both "L". Therefore, the output of the NAND gate 21 becomes "H", and the NAND gate 21
The other input terminals 20b, 22b of 20, 22 both become "H". The output S ₁₅ of therefore NAND gate 20 becomes "H", the output S ₁₄ of the NAND gate 22 is "L".

That is, only the output S ₁₄ of the NAND gate 22 becomes “L”, and it is determined that the battery mounted on the charging device 1 is the battery 2R.

When the battery 2S is mounted on the charging device 1 in the same manner as described above, the battery positive and negative terminals 2a and 2c of the battery 2S come into contact with the charging positive and negative terminals 3a and 3c. As a result, the terminal voltage of the battery 2S is applied from the charging positive terminal 3a to the connection detection unit 10 and the charge control unit 12, and the connection detection unit 10 outputs the output S ₁₀ of "H" to the battery determination units 14, 15, 16. give. Therefore, one input terminal 20a of the NAND gate 20 and the other input terminal 21b of the NAND gate 21 in the battery discriminating units 14, 15, 16 both become "H". Then, since the terminal voltage of the battery 2S is not input to the connection detection unit 13, the output S ₁₃
Is "L", and one input terminal 21a of the NAND gates 21 and 22
Both 22a and 22a are "L". Therefore NAND gate 21
Output becomes "H" and the other input terminal 2 of NAND gates 20 and 22
Both 0b and 22b are "H". Therefore, the output S ₁₅ of the NAND gate 20 becomes “L”, and the output S ₁₄ of the NAND gate 22 becomes “H. That is, only the output S ₁₅ of the NAND gate 20 becomes“ L ”, whereby the charging device 1 The battery set in
It is determined to be 2S.

Further, when the battery 2T is set in the charging device 1 in the same manner as described above, the battery positive and negative terminals 2a, 2b and 2c of the battery 2T come into contact with the charging positive and negative terminals 3a, 3b and 3c. As a result, the connection detection unit 10,13
Is supplied with different terminal voltages of the battery 2T, and the connection detection unit
Both outputs S ₁₀ and S ₁₃ of ₁₀ , ₁₃ are “H” and are given to the battery discriminating units 14, 15, 16.

Therefore, one of the NAND gate 21 and the other input terminals 21a and 21b of the battery discriminating units 14, 15 and 16 are both "H", and one input terminal 20a and 22a of the NAND gates 20 and 22 are both "H".
And the output of NAND gate 21 becomes "L", and the NAND gate
Both outputs of 20 and 22 are "H".

That is, only the output S ₁₆ of the NAND gate 21 becomes “L”, and it is determined that the battery mounted on the charging device 1 is the battery 2T.

Battery discrimination unit corresponding to the battery installed as described above
The outputs S ₁₄ , S ₁₅ and S _{16 of 14} , ₁₅ and ₁₆ are given to the voltage level switching unit 17 and the charging current control unit 18, and the voltage level switching unit 17
The charging control unit 12 sends the command signal so that the charging control unit 12 sets the charging voltage corresponding to the determined battery voltage of the battery.
The charging current control unit 18 also gives the command signal to the charging control unit 12 so that the charging control unit 12 sets the charging current corresponding to the determined battery. The charging control unit 12 sets the charging voltage and the charging current according to the given command signal, and starts charging the battery 2R, 2S or 2T mounted on the charging device 1. When the charging of the battery is completed and the battery reaches a predetermined voltage, a signal from a voltage sensor (not shown) that detects the terminal voltage of the battery is given to the charging control unit 12, and the charging control unit
12 cuts off the charging current and terminates the charging operation.

When two charging positive terminals 2 are thus provided, a battery connected to the charging negative terminal 3c and one charging positive terminal 3a, a charging negative terminal 3c and the other charging positive terminal 3b. It is possible to charge a battery connected to and a charging negative electrode terminal 3c and three types of batteries connected to one and the other charging positive electrode terminals 3a and 3b.

Further, when the first, second, and third charging positive terminals are provided, the charging negative terminal is commonly used, and the first charging positive terminal, the second charging positive terminal, and the first charging positive terminal The three types of batteries, which are separately connected to the three positive electrode terminals for charging, and the negative electrode terminal for charging are commonly used, and the first, second positive electrode terminals for charging, first, third positive electrode terminals for charging, and first , 3 types of batteries that are connected to the third charging positive electrode terminal separately, and 7 types of batteries that are connected to the 1st, 2nd, and 3rd charging positive electrode terminals in common with the charging negative electrode terminal The battery of can be charged. That is, it is possible to charge a large number of types of batteries, which are larger than the number of charging positive terminals, by sharing one charging device.

In the present embodiment, the battery discrimination units 14, 15 and 16 are configured by combining NAND gates, but logic gates other than NAND gates may be combined, or manual switches may be used.

The battery to be charged is a nickel-cadmium battery, but the battery is not limited to this battery. Further, two positive electrode terminals for charging are provided, but the number is not limited.

[Effect of device]

As described above in detail, according to the present invention, the number of charging positive terminals provided in the charging device is set to be equal to or less than the number of types of batteries having different terminal positions that can be mounted in the charging device, and the number of other types of batteries is set to
The charging device of the stand can be charged in common. In other words, it suffices to provide the number of positive electrode terminals for charging equal to or less than the number of types of batteries mounted on the charging device for charging.

Further, according to the present invention, the battery can be charged by appropriately controlling the charging current and the charging voltage according to the type of battery (that is, battery capacity and battery voltage).

Therefore, it is possible to provide a charging device that does not require a plurality of charging devices and can charge various types of batteries having different terminal positions with one charging device.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram of a charging device according to the present invention, and FIGS. 2 (A), (B), and (C) are perspective views of batteries having different terminal positions, and FIG. FIG. 4 is a block diagram of a charging device according to the present invention, and FIG. 4 is a circuit diagram of a battery discriminating unit. 1 ... Charging device, 1a ... Battery inlet / outlet, 2a, 2b ... Battery positive terminal, 2
c ... Battery negative terminal, 3a, 3b ... Power receiving positive terminal, 3c ... Charging negative terminal, 10 ... Connection detecting section, 12 ... Charge control section, 13 ... Connection detecting section, 14, 15, 16 ... Battery determining section

Claims (1)

[Scope of utility model registration request] 1. A charging device, which has the same shape and can be charged by mounting various types of batteries having different terminal positions depending on the battery voltage, for charging a number of batteries smaller than the number of types of batteries that can be mounted for charging. A positive electrode terminal is provided, and a battery determination means including a logic circuit for determining a specific battery connected to the positive electrode for charging and a charging current and a charging voltage are controlled in response to an output of the battery determination means. A charging device, comprising: a charging control unit.