Intelligent pulse temperature control charger

• US 20140139177A1
• Filed: 09/12/2012
• Published: 05/22/2014
• Est. Priority Date: 04/12/2012
• Status: Active Grant

• Current Assignee: Hangzhou Chuangmei Industry Co., Ltd.
• Original Assignee: Hangzhou Chuangmei Industry Co., Ltd.
• Inventors: Li, Mengquan
• Granted Patent: US 9,270,129 B2
• Time in Patent Office: Days
• US Class Current: 320/107
• CPC Class Codes: B60K 1/00 Arrangement or mounting of electrical propulsion units B60K7/00 takes precedence; arrangement or mounting of plural diverse prime-movers for mutual or common propulsion B60K6/00; electric transmission arrangements B60K17/12; electric equipment or propulsion of electrically-propelled vehicles per se B60L; current-collectors for power supply lines of electrically-propelled vehicles B60L5/00
• CPC Class Codes: B62D 49/06 adapted for multi-purpose use
• CPC Class Codes: B65H 75/44 Constructional details
• CPC Class Codes: H02G 11/02 using take-up reel or drum
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• CPC Class Codes: H02J 7/00711 with introduction of pulses during the charging process
• CPC Class Codes: H02J 7/007192 in response to temperature
• CPC Class Codes: H02J 7/04 Regulation of charging current or voltage
• CPC Class Codes: H02J 7/14 for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

A battery charger employs a temperature sensor and single chip microcomputer (SCM) programs for controlling and performs charging with a pulse current. The polarization occurred during battery charging can be eliminated and the charging voltage and current can be automatically regulated based on ambient temperature. An intelligent pulse temperature control charger has a casing and a charging circuit having a high voltage switch power supply circuit and a low voltage control circuit. In the low voltage control circuit, a SCM is employed for controlling, the SCM has three pins as input terminals connected to a temperature sampling circuit, charging voltage sampling circuit and charging current sampling circuit of the battery, respectively, and the SCM has two pins as output terminals, one connected via a photoelectric coupler with the high voltage switch power supply and the other connected with a dichromatic light emitting tube and a heat dissipation fan.

Claims

1. An intelligent pulse temperature control charger, comprising a casing and a charging circuit having a high voltage switch power supply circuit and a low voltage control circuit, wherein in the low voltage control circuit, a single chip microcomputer (SCM) is employed for controlling, the SCM has three pins as input terminals which are connected to a temperature sampling circuit, a charging voltage sampling circuit and a charging current sampling circuit of the battery, respectively;

the SCM has two pins as output terminals, one of which is connected via a photoelectric coupler with a high voltage switch power supply and the other of which is connected in turn with a dichromatic light emitting tube and a heat dissipation fan.

2. The intelligent pulse temperature control charger according to claim 1, characterized in that

the SCM in the low voltage control circuit has three pins as input terminals;

a stablized voltage integration block is connected via a resistor to a temperature sensitive diode and diodes which are connected in series with one another, and is grounded via the negative electrode of the diode, the node of the resistor and the temperature sensitive diode is connected to the fifth pin of the SCM, thus functioning as the temperature sampling circuit;

the negative electrode of the battery is connected via an insert connector to an end of resistors, the other end of the resistor is grounded, and the other end of the resistor is connected to a capacitor and the sixth pin of the SCM, thus functioning as the charging current sampling circuit;

the positive electrode of the battery is connected via an insert connector to the positive electrode of a diode and an end of the contact of a relay, the negative electrode of the diode is connected to the coil of the relay and an end of a resistor, the other end of the resistor is grounded via a resistor which is connected in parallel with a capacitor, functioning as a voltage division filtering circuit, and the voltage division point of the resistors is connected to the seventh pin of the SCM, thus functioning as the charging voltage sampling circuit;

the other end of the contact of the relay is connected to the negative electrode of a diode, the positive electrode of the diode is connected to the fifth connecting terminal of the secondary coil of a high frequency transformer, and the sixth connecting terminal of the secondary coil is grounded.

3. The intelligent pulse temperature control charger according to claim 1, characterized in that

the SCM in the low voltage control circuit has two pins as output terminals;

the second pin of the SCM is grounded via a resistor, the light emitting tube of the photoelectric coupler, and an indication light emitting tube, to control the high voltage switch power supply;

the third pin of the SCM is connected via a resistor to the base of a triode, and the collector of the triode is connected to the connection point of resistors, the other end of the resistor is connected to the red light of the dichromatic light emitting tube, the other end of the resistor is connected to the base of a triode, and the emitter of the triode is connected to the base of a triode, the collector of triode is connected to the green light of the dichromatic light emitting tube and one end of a resistor, the emitter of the triode is grounded, and the collector of the triode is connected to the negative terminal of the heat dissipation fan, and the positive terminal of the heat dissipation fan is connected via a resistor to the positive terminal of a capacitor and the negative electrode of a diode, the positive electrode of the diode is connected to the seventh connecting terminal of the secondary coil of the high frequency transformer, and the eighth connecting terminal of the secondary coil is grounded.

4. The intelligent pulse temperature control charger according to claim 3, characterized in that in the low voltage control circuit, the battery is connected with the insert connector, the battery has its positive electrode voltage-divided via the diode, the coil of the relay, resistors, is filtered via capacitors, is voltage stablized via the stablized voltage integration block, and is fine-tuned via a resistor, to output a voltage of 5.12V, and is filtered via capacitors, to supply the SCM with operation power.

5. The intelligent pulse temperature control charger according to claim 3, characterized in that in the high voltage switch power supply circuit, the collector of the photoelectric triode of the photoelectric coupler is connected to the node of resistors, the other end of the resistor is extended into two branches, one of which is connected via a resistor to the first connecting terminal of a primary coil of the high frequency transformer and the other of which is connected via a resistor and a diode to the third connecting terminal of the primary coil of the high frequency transformer, and the other end of the resistor is connected to the second pin of the integrate circuit.