Battery heating circuits and methods based on battery discharging and charging using resonance components in series and multiple charge storage components

• US 9,093,414 B2
• Filed: 07/18/2011
• Issued: 07/28/2015
• 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, Li, Xianyin
• Primary Examiner(s): Dunn, Drew A
• Assistant Examiner(s): Zhou, Zixuan
• Application Number:
  US13/184,915
• Publication Number:
  US 20120025781A1
• Time in Patent Office: 1,471 Days
• Field of Search: 320/128, 320/139, 320/150, 320/153
• US Class Current: 1/1
• 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

Under one aspect, a heating circuit for a battery includes a plurality of switch units, a switching control module, a damping component, an energy storage circuit, and a polarity inversion unit. The energy storage circuit is connected with the battery, and includes a current storage component and a plurality of charge storage components that respectively are connected with the plurality of switch units in series to form a plurality of branches that are connected in parallel with each other and in series with the current storage and damping components. The switching control module controls switching on and off of the switch units, so that energy flows back-and-forth between the battery and the energy storage circuit when the switch units switch on. The polarity inversion unit is connected with the energy storage circuit inverts a voltage polarity of the plurality of charge storage components after the switch units switch off.

Claims

1. A heating circuit for a battery, comprising:

a plurality of switch units, a switching control module, a damping component, an energy storage circuit, and a polarity inversion unit, wherein;

the energy storage circuit is connected with the battery, and comprises a first current storage component and a plurality of charge storage components;

the plurality of charge storage components are connected with the plurality of switch units in series in one-to-one correspondence to form a plurality of branches;

the plurality of branches are connected in parallel with each other and connected with the first current storage component and damping component in series;

the switching control module is connected with the switch units, and is configured to control switching on and off of the switch units, so that energy flows back-and-forth between the battery and the energy storage circuit when the switch units switch on;

the polarity inversion unit is connected with the energy storage circuit, and is configured to invert a voltage polarity of the plurality of charge storage components after the switch units switch from on to off.

2. The heating circuit according to claim 1, wherein:

the polarity inversion unit comprises a plurality of inversion circuits;

the plurality of inversion circuits are connected with the plurality of charge storage components in one-to-one correspondence, wherein;

each inversion circuit comprises a one-way switch and the first current storage component connected in series with each other;

the switching control module is also connected with the one-way switches, and is configured to invert the voltage polarity of the plurality of charge storage components by controlling the one-way switches to switch on.

3. The heating circuit according to claim 1, wherein:

the polarity inversion unit comprises a plurality of one-way switches and a second current storage component;

the plurality of one-way switches are connected at one end to the plurality of charge storage components at one end in one-to-one correspondence, the plurality of one-way switches are connected at the other end to one end of the second current storage component, and the other end of the second current storage component is connected to the plurality of charge storage components at the other end;

the switching control module is also connected with the one-way switches, and is configured to invert the voltage polarity of the plurality of charge storage components at the same time or in sequence by controlling the one-way switches to switch on.

4. The heating circuit according to claim 1, wherein:

each switch unit is a two-way switch.

5. The heating circuit according to claim 1, wherein:

each switch unit comprises a first one-way branch configured to transfer energy from the battery to the energy storage circuit and a second one-way branch configured to transfer energy from the energy storage circuit to the battery;

the switching control module is connected with either or both of the first one-way branch and second one-way branch, to control switching on and off of the connected branch.

6. The heating circuit according to claim 5, wherein:

each switch unit comprises a first two-way switch and a second two-way switch,

the first two-way switch and the second two-way switch are connected in series opposite to each other to form the first one-way branch and the second one-way branch;

the switching control module is connected with the first two-way switch and the second two-way switch respectively, and is configured to control switching on and off of the first one-way branch and the second one-way branch by controlling switching on and off of the first two-way switch and the second two-way switch.

7. The heating circuit according to claim 5, wherein:

each switch unit comprises a first switch, a first one-way semiconductor component, and a second one-way semiconductor component, the first switch and the first one-way semiconductor component are connected with each other in series to constitute the first one-way branch;

the second one-way semiconductor component constitutes the second one-way branch;

the switching control module is connected with the first switch, and is configured to control switching on and off of the first one-way branch by controlling switching on and off of the first switch.

8. The heating circuit according to claim 7, wherein:

each switch unit further comprises a second switch in the second one-way branch, and the second switch is connected with the second one-way semiconductor component in series;

the switching control module is also connected with the second switch, and is configured to control switching on and off of the second one-way branch by controlling switching on and off of the second switch.

9. The heating circuit according to claim 5, wherein:

each switch unit further comprises a resistor connected in series with the first one-way branch and/or the second one-way branch.

10. The heating circuit according to claim 1, wherein:

the switching control module controls each switch unit to switch off when or after a current through that switch unit reaches zero after that switch unit switches on.

11. The heating circuit according to claim 1, wherein:

the switching control module controls the plurality of switch units, so that the energy can flow from the battery to the charge storage components at the same time or in sequence, and the energy can flow from the charge storage components to the battery at the same time or in sequence.

12. The heating circuit according to claim 1, wherein:

the damping component is a parasitic resistance in the battery, and the first current storage component is a parasitic inductance in the battery.