Circuits and methods for heating batteries in series using resonance components in series

• US 8,823,317 B2
• Filed: 07/22/2011
• Issued: 09/02/2014
• Est. Priority Date: 07/30/2010
• Status: Active Grant

• Current Assignee: BYD Semiconductor Co., Ltd.
• Original Assignee: BYD Company Limited
• Inventors: Xu, Wenhui, Han, Yaochuan, Feng, Wei, Yang, Qinyao, Xia, Wenjin, Ma, Shibin
• Primary Examiner(s): DIAO, M BAYE
• Application Number:
  US13/189,114
• Publication Number:
  US 20120025756A1
• Time in Patent Office: 1,138 Days
• Field of Search: 320/103, 320/128, 320/166, 320/129, 219/209
• US Class Current: 320/103
• CPC Class Codes: H01L 23/345 Arrangements for heating thermal treatment apparatus H01L21/00
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
• CPC Class Codes: H01M 10/615 Heating or keeping warm
• CPC Class Codes: H01M 10/625 Vehicles
• CPC Class Codes: H01M 10/651 characterised by parameters specified by a numeric value or mathematical formula, e.g. ratios, sizes or concentrations
• CPC Class Codes: H01M 10/657 by electric or electromagnetic means
• CPC Class Codes: H01M 10/6571 Resistive heaters arrangements for heating the battery by its resistance to the internal current H01M10/637
• CPC Class Codes: H01M 10/6572 Peltier elements or thermoelectric devices
• CPC Class Codes: H02J 7/0014 Circuits for equalisation of charge between batteries
• CPC Class Codes: H02J 7/0069 Charging or discharging for charge maintenance, battery initiation or rejuvenation
• CPC Class Codes: H02J 7/00711 with introduction of pulses during the charging process
• CPC Class Codes: H02J 7/007194 of the battery
• CPC Class Codes: H02J 7/342 The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging with circuits for polarity protection H02J7/0034
• CPC Class Codes: H02M 3/158 including plural semiconductor devices as final control devices for a single load
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

Circuit and method for heating first and second batteries. The heating circuit includes first and second switch units, first and second damping components, first and second current storage components, switching control module and charge storage component. The first battery, first damping and current storage components, first switch unit and charge storage component are connected in a first loop to form a first charging/discharging circuit. The second battery, second damping and current storage components, charge storage component and second switch unit are connected in a second loop to form a second charging/discharging circuit. When the charge storage component is charged or discharges, charging/discharging current in the second charging/discharging circuit is reverse to that in the first charging/discharging circuit. The switching control module controls the first and second switch units to switch on in alternate, so as to control electric energy flow among the first battery, charge storage component and second battery.

Claims

1. A heating circuit for a battery comprising a first battery and a second battery, the heating circuit comprising a first switch unit, a second switch unit, a first damping component, a second damping component, a first current storage component, a second current storage component, a switching control module and a charge storage component, wherein:

the first battery, the first damping component, the first current storage component, the first switch unit and the charge storage component are connected in a first loop to form a first charging/discharging circuit;

the second battery, the second damping component, the second current storage component, the charge storage component and the second switch unit are connected in a second loop to form a second charging/discharging circuit;

when the charge storage component is charged or discharges, a direction of a charging/discharging current in the second charging/discharging circuit is reverse to a direction of a charging/discharging current in the first charging/discharging circuit;

the switching control module is electrically connected with the first switch unit and the second switch unit, and the switching control module is configured to control the first switch unit and the second switch unit to switch on in alternate, so as to control electric energy flow among the first battery, the charge storage component and the second battery.

2. The heating circuit according to claim 1, wherein the first damping component and the second damping component are parasitic resistances in the first battery and the second battery respectively, the first current storage component and the second current storage component are parasitic inductances in the first battery and the second battery respectively, and the charge storage component is a capacitor.

3. The heating circuit according to claim 1, wherein the heating circuit further comprises a third current storage component and a fourth current storage component, wherein:

the third current storage component is connected in series in the first charging/discharging circuit, and the fourth current storage component is connected in series in the second charging/discharging circuit.

4. The heating circuit according to claim 3, wherein the third current storage component and the fourth current storage component are inductors.

7. The heating circuit according to claim 1, wherein the first switch unit and/or the second switch unit comprise a switch and a one-way semiconductor component connected in parallel with the switch in a reverse direction, the switching control module is electrically connected with the switch, and the switching control module is configured to control ON/OFF of forward direction branches of the first switch unit and/or the second switch unit by controlling ON/OFF of the switch.

8. The heating circuit according to claim 7, wherein when or after the current flowing through the first switch unit or the second switch unit reaches zero, the switching control module is configured to control the first switch unit or the second switch unit to switch off respectively.

5. A heating circuit for a battery comprising a first battery and a second battery, the heating circuit comprising a first switch unit, a second switch unit, a first damping component, a second damping component, a first current storage component, a second current storage component, a switching control module, a charge storage component, a third current storage component, a fourth current storage component, a first one-way semiconductor component, a second one-way semiconductor component, a third one-way semiconductor component and a fourth one-way semiconductor component, wherein:

the first battery, the first damping component, the first current storage component, the first switch unit and the charge storage component are connected in a first loop to form a first charging/discharging circuit;

the second battery, the second damping component, the second current storage component, the charge storage component and the second switch unit are connected in a second loop to form a second charging/discharging circuit;

when the charge storage component is charged or discharges, a direction of a charging/discharging current in the second charging/discharging circuit is reverse to a direction of a charging/discharging current in the first charging/discharging circuit;

the switching control module is electrically connected with the first switch unit and the second switch unit, and the switching control module is configured to control the first switch unit and the second switch unit to switch on in alternate, so as to control electric energy flow among the first battery, the charge storage component and the second battery;

the third one-way semiconductor component and the first switch unit are connected in series with each other and the first one-way semiconductor component and the third current storage component connected in series with each other are connected in parallel between the ends of the third one-way semiconductor component and the first switch unit, so as to limit the current in the first charging/discharging circuit in a reverse direction; and

,

the fourth one-way semiconductor component and the second switch unit are connected in series with each other and the fourth current storage component and the second one-way semiconductor component connected in series with each other are connected in parallel between the ends of the fourth one-way semiconductor component and the second switch unit, so as to limit the current in the second charging/discharging circuit in a reverse direction.

6. The heating circuit according to claim 5, wherein the third current storage component and fourth current storage component are inductors.