WO2005122358A1 - Chargeur de batteries multifonctions - Google Patents

Chargeur de batteries multifonctions Download PDF

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Publication number
WO2005122358A1
WO2005122358A1 PCT/CN2005/000348 CN2005000348W WO2005122358A1 WO 2005122358 A1 WO2005122358 A1 WO 2005122358A1 CN 2005000348 W CN2005000348 W CN 2005000348W WO 2005122358 A1 WO2005122358 A1 WO 2005122358A1
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WO
WIPO (PCT)
Prior art keywords
circuit
voltage
current
charging
input terminal
Prior art date
Application number
PCT/CN2005/000348
Other languages
English (en)
Chinese (zh)
Inventor
Yiping Sun
Yongqiang Zhou
Original Assignee
Yiping Sun
Yongqiang Zhou
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yiping Sun, Yongqiang Zhou filed Critical Yiping Sun
Publication of WO2005122358A1 publication Critical patent/WO2005122358A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage

Definitions

  • the invention relates to a battery charger, in particular to a multifunctional battery charger for alkaline batteries and nickel-cadmium / nickel-metal hydride batteries. Background technique
  • the charging time is too long, which will not only lengthen the charging monitoring time and cause waste of electrical energy; but long-time low-current charging can easily cause the phenomenon of "polarization" in the charging process, and sulfur crystals will appear inside , Greatly reducing the cycle life of the battery.
  • Pulse charging method is a new development of battery charging theory. Pulse charging method is that the charging current is output in pulse mode. When the battery is charged in time, the charging is temporarily suspended, which can quickly and effectively eliminate various polarization voltages, thereby improving The charging speed can also speed up the reaction speed of the active material, effectively preventing sulfur crystals and battery heating.
  • the Ni-Cr / Ni-MH battery charger with self-stop function on the market uses a negative voltage increase (- ⁇ ⁇ ) detection method to determine whether the battery is fully charged (that is, when the battery is charged, the voltage will rise when the battery is fully charged. Value, the voltage will drop when it is overcharged, that is, the characteristics of "- ⁇ ⁇ " appear to complete the automatic control of the charging process).
  • Utility model ZL02260542.8 discloses a Ni-Cr / Ni-MH battery with self-stop function.
  • the voltage comparison control circuit consists of a battery voltage divider sampling circuit, a peak holding circuit, a- ⁇ V comparison control circuit, a D 1 reverse leakage current suppression circuit, a stable voltage as a peak, a sample holding capacitor positive terminal reference voltage circuit, and an op amp input. End bias current suppression circuit.
  • the disadvantages of this charger are its complicated structure, high cost, and its inability to automatically adjust the charging current based on the charging situation.
  • alkaline batteries and nickel-chromium / nickel-metal hydride batteries have different end-of-charge voltages.
  • the object of the present invention is to provide a versatile battery charger for alkaline batteries and nickel-cadmium / nickel-metal hydride batteries that have a reasonable structure, can automatically adjust the charging current according to the charging situation, and have an accurate stopping function.
  • a charging base comprises a housing and a circuit which operates in a pulse charging mode placed inside the housing.
  • the upper surface of the housing is provided with a recess for placing a battery to be charged, and the recess is provided with the recess.
  • the charging port, the setting of the charging port, and its electrical connection with the working circuit enable the battery to be charged to correctly transmit the charging current and the battery signal after the battery to be charged is placed in the recess, and the circuit working in the pulse charging mode includes a shallow
  • the pulsating DC power generating circuit is characterized by:
  • the circuit that operates in pulse charging mode further includes a reference voltage preset circuit, a sample comparison circuit, a charging indication circuit, and an adjustment link;
  • the shallow pulsating DC power generating circuit is connected to a charging power input port of an adjustment link, and provides a shallow pulsating DC charging current for a charging port through the adjusting link.
  • the shallow pulsating DC power generating circuit is connected to a reference voltage preset circuit and a sampling comparison circuit.
  • the working power input port is connected to provide working power for the reference voltage preset circuit and the sampling comparison circuit; the reference voltage output terminal of the reference voltage preset circuit is connected to the reference voltage input terminal of the sampling comparison circuit; the sampling of the sampling comparison circuit
  • the input terminal of the voltage input is connected to the sample voltage output terminal of the charging port.
  • the output terminal of the sampling comparison circuit is connected to the control current input terminal of the adjustment link and the current input terminal of the charging instruction circuit.
  • the sampling comparison circuit has a common potential reference point for it. The input voltages of the reference voltage input terminal and the sampling voltage input terminal are compared, and the output terminals respectively output a control current to the adjustment link and the charging instruction circuit.
  • the adjustment link adjusts the magnitude of the shallow pulsating DC charging current output to the charging port according to the control current.
  • the shallow pulsating DC power generating circuit includes a bridge rectifier circuit composed of a power transformer and a diode, wherein the power transformer converts the AC voltage into a required voltage value, and then rectifies the AC voltage into a pulsating DC through a bridge rectifier circuit composed of a diode. Voltage.
  • the charging instruction circuit is a light emitting diode.
  • the adjusting step includes adjusting a transistor, a collector of the adjusting transistor is connected to a current output terminal of the shallow pulsating DC power generating circuit through a third current limiting resistor, an emitter terminal is connected to a charging port, and a base electrode is connected to an output terminal of the sampling comparison circuit .
  • the sampling-like comparison circuit includes two operational amplifiers. One input terminal of the two operational amplifiers is a reference voltage input terminal, and the other input terminal is a sampling voltage input terminal.
  • the current output terminal of the shallow pulsating DC power source generating circuit is connected, and the output terminal is respectively connected to the control current input terminal of the adjustment link and the current input terminal of the charging instruction circuit.
  • the output terminals of one of the two operational amplifiers of the sampling comparison circuit described above pass through the first
  • the current-limiting resistor is connected to the base of the adjusting transistor of the adjustment link, and after having common power to it, the control current is output to the base of the adjusting transistor to control and adjust the current of the emitter of the transistor; the other output terminal is connected to the charging indicator circuit.
  • the P area of the light emitting diode is connected. After comparing the input voltages of the reference voltage input terminal and the sampling voltage input terminal having a common potential reference point, it outputs or stops outputting a working current to the light emitting diode to indicate charging in progress and end of charging.
  • the reference voltage preset circuit includes first and second voltage dividing resistors, a third light emitting diode, and a double-knife switch, wherein when the double-knife switch is in a closed state, the third light-emitting diode and the first voltage-dividing resistor
  • the third light emitting diode is connected in series to an operating voltage output terminal of the shallow pulsating DC power generating circuit, and is connected between a reference voltage input terminal of the sampling and comparison circuit and a common potential reference point, and the terminal voltage is used as a reference voltage input for sampling.
  • the second voltage dividing resistor is vacant; when the double-knife switch is in the closed state of two, the second voltage dividing resistor and the first voltage dividing resistor are connected in series to the working voltage output terminal of the shallow pulsating DC power generating circuit,
  • the second voltage-dividing resistor is connected between the reference voltage input terminal of the sampling comparison circuit and a common potential reference point thereof, and the terminal voltage is used as the reference voltage to input the sampling comparison circuit, and the third light emitting diode is vacant.
  • the third light-emitting diode is in the two states of light-on and light-off when the two closed states of the double-knife blade are closed, so as to indicate the type of the battery currently being charged.
  • Figure 1 is a block diagram of the working circuit structure of the present invention.
  • FIG. 2 is a schematic structural diagram of a core chip of a sampling comparison circuit according to an embodiment of the present invention.
  • FIG. 3 is a schematic circuit diagram of an embodiment of the present invention. detailed description
  • the multifunctional battery charger of the present invention includes a charging base including a casing and a circuit working in a pulse charging manner placed inside the casing.
  • the upper surface of the casing is provided with a recess for placing a battery to be charged, and the recess is provided with a recess.
  • the charging port, the setting of the charging port and its electrical connection with the working circuit enable the battery and the circuit to correctly transmit the charging current and the battery signal after the battery to be charged is placed in the recess.
  • a circuit that operates in a pulse charging mode includes a shallow pulsating DC power source generating circuit 1, a reference voltage preset circuit 2, a sampling comparison circuit 3, a charging indicating circuit 4 and an adjustment link 5.
  • the shallow pulsating DC power generation circuit 1 is connected to the charging power input port of the adjustment link 5, and provides a shallow pulsating DC charging current to the charging port 6 through the adjustment link 5.
  • the shallow pulsating DC power generation circuit 1 is also connected to a reference voltage preset circuit. 2.
  • the working power input port of the sampling comparison circuit 3 is connected to provide working power for the reference voltage preset circuit 2 and the sampling comparison circuit 3.
  • the reference voltage output terminal of the reference voltage preset circuit 2 is connected to the reference voltage input terminal of the sampling comparison circuit 3.
  • the sampling voltage input terminal of the sampling comparison circuit 3 is connected to the sampling voltage output terminal of the charging port 6.
  • the output terminal is connected to the adjustment link.
  • the control current input terminal of 5 and the current input terminal of the charge indicating circuit 4 are connected.
  • the sampling comparison circuit 3 compares the input voltages of the reference voltage input terminal and the sampling voltage input terminal which have a common potential reference point, and outputs a control current to the adjustment link 5 and the charge indication circuit 4 respectively at the output terminals.
  • the adjustment link 5 adjusts the magnitude of the shallow pulsating DC charging current output to the charging port 6 according to the control current, and stops outputting the shallow pulsating DC charging current when the output current of the output terminal of the sampling and comparison circuit 3 is zero.
  • Charge indication circuit 4 When the output terminal of the sample comparison circuit 3 has an output current, the light emitting state is maintained, and when the output current of the output terminal of the sample comparison circuit 3 is zero, it is turned off to indicate that the charging is completed.
  • FIG. 2 and FIG. 3 provide an embodiment of a circuit working in a pulse charging mode according to the present invention.
  • This embodiment provides a charging circuit for charging two batteries at the same time, that is, two circuits for charging one battery described in the present invention are connected in parallel. If three or more batteries are to be charged at the same time, as long as the same number is charged The circuits of the present invention can be connected in parallel.
  • the sampling comparison circuit 3 in this embodiment includes four operational amplifiers Ul, U2, U3, and U4, and is implemented by using a core chip U.
  • the core chip U is an integrated chip, where pin 11 is the power supply terminal of the integrated chip U; pin 4 is the ground terminal of the integrated chip U; pin 1 is the output of U1, pin 7 is the output of U2, and pin 8 is The output of U3 and pin 14 are the output of U4; pin 2, pin 3 is the input of U1, pin 5, 6 is the input of U2, pin 9, 10 is the input of U3, pin 12, pin 13 is the input of U4.
  • One of these operational amplifiers Ul, U2, U3, U4 is a reference voltage input terminal, and the other input terminal is a sampling voltage input terminal.
  • the shallow pulsating DC power supply generating circuit 1 of the present invention may use required voltage transformation, rectification, filtering, and other technologies to form the required circuits.
  • a power transformer T1 is first used to change the AC grid 220V AC voltage to The required voltage value, and then rectify the AC voltage into a pulsating DC voltage through a bridge rectifier circuit composed of diodes D1, D2, D3, and D4.
  • the obtained DC voltage provides working power for the sampling and comparison circuit 3 integrated chip U: Its positive terminal is connected to pin 11 of integrated chip U through a fifth current-limiting resistor R5, and its negative terminal is connected to ground terminal 4 of integrated chip U, and a parallel-connected thyristor DW is connected between pin 11 and pin 4 of integrated chip U.
  • a voltage-stabilizing filter circuit formed in parallel with the filter capacitor C 1, so that the DC voltage as the working power of the integrated chip U is more stable; on the other hand, it provides a shallow pulsating DC charging power for the charging port 6 through the adjustment link 5.
  • the adjusting link 5 of this embodiment is implemented by using two adjusting triodes Q l and Q2.
  • the collectors of the first and second adjusting triodes Ql and Q2 are connected through a third current limiting resistor R3 and a fourth current limiting resistor R4, respectively.
  • Sampling and comparison circuit 3 Integrated pin U, pin 13 and pin 10 of the integrated chip U are short-circuited and then connected to the first trimming pole
  • the emitter of the tube Q l, the pin 14 is connected to the base of the first adjusting transistor Q l through the first current limiting resistor R1.
  • the pins 2 and 5 of the integrated chip U are short-circuited and then connected to the emitter of the second adjusting transistor Q2, and pin 1 is connected to the base of the second adjusting transistor Q2 through the second current limiting resistor R2.
  • the first battery BT1 to be charged is connected in series between the emitter of the first adjusting transistor Q 1 and the ground pin 4 of the integrated chip U.
  • the positive electrode is connected to the emitter of the first adjusting transistor Q 1 and the negative electrode is grounded.
  • the battery BT2 is connected in series between the emitter of the second adjusting transistor Q2 and the ground pin 4 of the integrated chip U, the positive electrode is connected to the emitter of the second adjusting transistor Q2, and the negative electrode is grounded.
  • the charging instruction circuit 4 of this embodiment is implemented by using two light emitting diodes LED1 and LED2 to indicate the charging status of the rechargeable batteries (BT1, BT2).
  • the P region of the first light-emitting diode LED 1 is connected to pin 8 of the integrated chip U, and the N region of the first light-emitting diode LED 2 is connected to pin 4 of the integrated chip U.
  • the P region of the second light-emitting diode LED 2 is connected to pin 7 of the integrated chip U, and the N region is integrated. Ground terminal 4 of chip U.
  • the reference voltage preset circuit 2 in this embodiment includes first and second voltage dividing resistors R6 and R8, a third light-emitting diode LED3, and a double-link switch K.
  • Sampling and comparison circuit 3 integrates chip U, pin 9, pin 3, and pin 6 of the chip U, and then connects to contact 1 and contact 4 of the double knife switch K. The contacts 1 and 4 are short-circuited and pass
  • the first voltage dividing resistor R6 is connected to the pins 11 of the integrated chip U.
  • a third light-emitting diode LED3 is connected in series between the contact 5 of the double-knife switch K and the ground terminal 4 of the integrated chip U.
  • the P region of the third light-emitting diode LED3 is connected to the contact 5 of the double-knife switch K.
  • the N region is connected to the ground terminal pin 4 of the integrated chip U.
  • the contact 6 of the double-knife switch K is connected to the ground terminal 4 of the integrated chip U through the second voltage dividing resistor R8, and the electric shocks 2 and 3 are vacant.
  • the first state of the double-knife switch K of the reference voltage preset circuit 2 is closed, that is, the contact 1 and the contact 5 of the double-knife switch K communicate with each other, and the contact 3 and the contact 6
  • the 220V AC power passes the shallow pulsating DC power generation circuit 1.
  • the DC shallow pulsating power generated by the voltage transformation, rectification, voltage stabilization, and filtering provides a DC pulsating current to the adjustment link. 5 Adjust the transistors Q l, Q2.
  • the on-state of the double-knife switch K at this time causes the voltage drop across the third light-emitting diode LED3 to be input as a preset reference voltage to the 12-pin of the integrated chip U of the sampling and comparison circuit 3, which is an input terminal of the operational amplifier U4 Pin 9 is an input of the operational amplifier U3, and pin 3 of the integrated chip U is an input of the operational amplifier U1, and pin 6 is an input of the operational amplifier U2.
  • pin 13 of the integrated chip U connected to the positive electrode of the first battery BT1 is the other input terminal of the operational amplifier U4
  • pin 10 is the other input terminal of the operational amplifier U3, and 2 of the integrated chip U connected to the positive electrode of the second battery BT2.
  • Pin is the other input terminal of the operational amplifier U1
  • pin 5 is the other input terminal of the operational amplifier U2, and samples the current voltages of the batteries BT1 and BT2.
  • the 14-pin of the integrated chip U is the output of the operational amplifier U4 and the 1-pin of the integrated chip U is the operational amplifier U1.
  • the output terminal outputs a suitable control current to the bases of the adjustment transistors Ql, Q2, and adjusts the magnitude of the shallow pulsating DC charging current output by the emitters of the adjustment transistors Ql, Q2 to charge the batteries BT1, BT2; and integrates the chip
  • the output current of pin 8 of U that is, the output terminal of the operational amplifier U3, causes the first light-emitting diode LED1 of the charging instruction circuit 4 to emit light.
  • the light emitting diode LED2 emits light, and is used to indicate that the batteries BT1 and BT2 are in the charging process, respectively.
  • the voltages of the batteries BT1 and BT2 gradually increase, so that the voltage difference between the input terminals of the four operational amplifiers Ul, U2, U3, and U4 in the integrated chip U gradually becomes smaller, so that the four The output currents from the output terminals of the operational amplifiers Ul, U2, U3, U4 to the bases of the adjustment transistors Ql, Q2 change with the progress of the charging process, so as to control and adjust the currents of the emitters of the transistors Ql, Q2.
  • the batteries BT1 and BT2 are charged to a preset voltage, the voltage difference between the input terminals of the four operational amplifiers Ul, U2, U3, and U4 in the integrated chip U becomes zero, so that the output current at its output terminal also becomes zero.
  • the base currents of the adjusting transistors Ql and Q2 become zero, and the emitter currents of the adjusting transistors Ql and Q2 then become zero. Then, the charging of the batteries BT1 and BT2 stops in time.
  • the first and second light-emitting diodes LED1 and LED1 LED2 is also off at the same time.
  • the double-knife switch K of the reference voltage preset circuit 2 is in the closed state two, that is, the double-knife switch K is in a state where the contact 2 and the contact 5 are in communication, and the contact 4 and the contact 6 are in the state
  • the second voltage-dividing resistor R8 replaces the position of the third light-emitting diode LED3
  • the voltage drop across the voltage-dividing resistor R8 becomes a preset comparison voltage. Therefore, as long as the third light-emitting diode LED3 and the second voltage-dividing resistor R8 are Reasonable setting of the parameters can make it possible to preset different terminations for the charger when charging alkaline batteries and nickel-chromium / nickel-metal hydride batteries with different termination voltages.
  • the third light-emitting diode LED3 is in series or vacant state with the first voltage-dividing resistor R6, so that the third light-emitting diode LED3 is light-emitting. Or in an off state, so as to indicate the type of battery currently being charged.
  • This embodiment is mainly directed to a working circuit for charging two batteries, and the two batteries can be charged at the same time or at different times.
  • the working circuit of the present invention needs to charge other number of batteries, the number of operational amplifiers connected in parallel with the sampling comparison circuit and the number of adjustment transistors connected in parallel in the adjustment link can be adjusted accordingly. For example, only one battery needs to be charged. For the working circuit, only two operational amplifiers and one adjusting transistor are needed. If three or more batteries are to be charged at the same time, as long as the corresponding number of operational amplifiers are connected in parallel, the adjusting transistors can be adjusted.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

La présente invention a trait à un chargeur de batteries multifonctions, et son circuit de fonctionnement équipé d'un circuit de génération d'alimentation en courant continu en petites pulsations, un circuit de préréglage de tension de référence, un circuit d'échantillonnage et de comparaison, un circuit d'indication de charge et une circuit de réglage. Une tension de référence est préétablie au niveau de la borne d'entrée du circuit d'échantillonnage et de comparaison par le circuit de préréglage de tension de référence, et le circuit d'échantillonnage et de comparaison compare les tensions d'entrée de la borne d'entrée de la tension présente de la batterie de charge d'échantillonnage avec la borne d'entrée de la tension de référence, les deux étant munies d'une point de référence de potentiel commun, et émet en sortie le courant de commande correspondant vers la section de réglage et le circuit d'indication de charge au niveau de la borne de sortie respectivement pour contrôler la grandeur et l'instant d'arrêt du courant de charge continu en petites pulsations émis en sortie par la section de réglage vers la borne de charge et contrôler les états de luminescence et d'extinction du circuit d'indication de charge.
PCT/CN2005/000348 2004-06-10 2005-03-21 Chargeur de batteries multifonctions WO2005122358A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200410025082.1 2004-06-10
CNB2004100250821A CN100369353C (zh) 2004-06-10 2004-06-10 一种电池充电器

Publications (1)

Publication Number Publication Date
WO2005122358A1 true WO2005122358A1 (fr) 2005-12-22

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Application Number Title Priority Date Filing Date
PCT/CN2005/000348 WO2005122358A1 (fr) 2004-06-10 2005-03-21 Chargeur de batteries multifonctions

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CN (1) CN100369353C (fr)
WO (1) WO2005122358A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107526045A (zh) * 2017-09-25 2017-12-29 山西工程技术学院 一种Led指示型汽车电瓶健康检测仪
CN110061555A (zh) * 2019-05-27 2019-07-26 深圳市助尔达电子科技有限公司 智能校准输出充电器
CN110071544A (zh) * 2019-04-26 2019-07-30 东莞市天富励德实业有限公司 一种智能手机壳

Families Citing this family (3)

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US9132740B2 (en) * 2009-06-29 2015-09-15 Ford Global Technologies, Llc Automotive exterior lamp assembly with charge port
CN105071483B (zh) * 2015-08-25 2017-11-07 深圳还是威健康科技有限公司 一种可显示充电状态的充电电路和智能手环充电器
CN105490344B (zh) * 2016-01-05 2018-04-06 深圳市金霆正通科技有限公司 电动汽车充电电流控制方法及其控制系统

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CN2358622Y (zh) * 1999-02-04 2000-01-12 北京有色金属研究总院 二次电池恒流恒压充电装置

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CN2150658Y (zh) * 1993-03-06 1993-12-22 中山市小榄镇新艺电子厂 全自动充电器
CN2183039Y (zh) * 1993-12-18 1994-11-16 王坚 全自动电池充电器
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107526045A (zh) * 2017-09-25 2017-12-29 山西工程技术学院 一种Led指示型汽车电瓶健康检测仪
CN110071544A (zh) * 2019-04-26 2019-07-30 东莞市天富励德实业有限公司 一种智能手机壳
CN110061555A (zh) * 2019-05-27 2019-07-26 深圳市助尔达电子科技有限公司 智能校准输出充电器

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Publication number Publication date
CN1707902A (zh) 2005-12-14
CN100369353C (zh) 2008-02-13

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