Battery heating circuits and methods using resonance components in series and bridging charge storage components

• US 9,160,041 B2
• Filed: 06/01/2012
• Issued: 10/13/2015
• 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): DO, THUAN V
• Application Number:
  US13/486,883
• Publication Number:
  US 20120280659A1
• Time in Patent Office: 1,229 Days
• Field of Search: 320/129
• US Class Current: 1/1
• CPC Class Codes: B60L 58/27 by heating
• CPC Class Codes: H01M 10/615 Heating or keeping warm
• CPC Class Codes: H01M 10/625 Vehicles
• CPC Class Codes: H01M 10/63 Control systems charging or discharging in response to temperature H01M10/44 , H01M10/443; measurement of temperature H01M10/48 , H01M10/486
• CPC Class Codes: H01M 10/637 characterised by the use of reversible temperature-sensitive devices, e.g. NTC, PTC or bimetal devices; characterised by control of the internal current flowing through the cells, e.g. by switching means for preventing undesired use or discharge H01M50/572
• 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

According to certain embodiments, a battery heating circuit is provided, comprising a first switch unit 11, a second switch unit 12, a third switch unit 13, a fourth switch unit 14, a switching control module 100, a damping component R1, a current storage component L1, and a charge storage component C1; the damping component R1 and the current storage component L1 are configured to connect with the battery in series to form a branch; the first switch unit 11 and the second switch unit 12 are connected in series with each other and then connected in parallel with the branch; the third switch unit 13 and the fourth switch unit 14 are connected in series with each other and then connected in parallel with the branch.

Claims

1. A circuit for heating a battery, the circuit comprising:

the battery including a first damping component and a first current storage component, the first damping component and the first current storage component being parasitic to the battery;

a first switch unit including a first terminal and a second terminal;

a second switch unit including a third terminal and a fourth terminal, the third terminal being connected to the second terminal;

a third switch unit including a fifth terminal and a sixth terminal, the fifth terminal being connected to the first terminal;

a fourth switch unit including a seventh terminal and an eighth terminal, the seventh terminal being connected to the sixth terminal, the eighth terminal being connected to the fourth terminal;

a switching control component coupled to the first switch unit, the second switch unit, the third switch unit, and the fourth switch unit; and

a charge storage component connected to the second terminal, the third terminal, the sixth terminal and the seventh terminal;

wherein;

the first damping component and the first current storage component are connected with a combination of the first switch unit, the second switch unit, the third switch unit, the fourth switch unit, and the charge storage component;

the switching control component is configured to turn on and off each of the first switch unit, the second switch unit, the third switch unit, and the fourth switch unit so as to control one or more currents flowing from the battery to the charge storage component and flowing from the charge storage component to the battery;

wherein the circuit for heating the battery is configured to heat the battery by at least discharging and charging the battery.

2. The circuit of claim 1, wherein the switching control component is further configured to turn on and off each of the first switch unit and the fourth switch unit so as to control the one or more currents flowing through at least the first switch unit and the fourth switch unit.

3. The circuit of claim 2, wherein the switching control component is further configured to turn off the first switch unit and the fourth switch unit when or after the one or more currents flowing through at least the first switch unit and the fourth switch unit reduce to zero in magnitude after the first switch unit and the fourth switch unit are turned on.

4. The circuit of claim 1, wherein the switching control component is further configured to turn on and off each of the second switch unit and the third switch unit so as to control the one or more currents flowing through at least the second switch unit and the third switch unit.

5. The circuit of claim 4, wherein the switching control component is further configured to turn off the second switch unit and the third switch unit when or after the one or more currents flowing through at least the second switch unit and the third switch unit reduce to zero in magnitude after the second switch unit and the third switch unit are turned on.

6. The circuit of claim 1 wherein each of the first switch unit, the second switch unit, the third switch unit, and the fourth switch unit includes a two-way switch.

7. The circuit of claim 1 wherein each of the first switch unit, the second switch unit, the third switch unit, and the fourth switch unit includes two one-way switches connected in parallel to each other.

8. The circuit of claim 1 wherein each of the first switch unit, the second switch unit, the third switch unit, and the fourth switch unit includes two two-way switches connected in series with each other.

9. The circuit of claim 1, and further comprising a resistor connected in series with the first switch unit and the fourth switch unit.

10. The circuit of claim 1, and further comprising a resistor connected in series with the second switch unit and the third switch unit.

11. The circuit of claim 1 is further configured to:

start heating the battery if at least one heating start condition is satisfied; and

stop heating the battery if at least one heating stop condition is satisfied.

12. A circuit for heating a battery, the circuit comprising:

the battery including a first damping component and a first current storage component, the first damping component and the first current storage component being parasitic to the battery;

a first switch unit including a first terminal and a second terminal;

a second switch unit including a third terminal and a fourth terminal, the third terminal being connected to the second terminal;

a third switch unit including a fifth terminal and a sixth terminal, the fifth terminal being connected to the first terminal;

a fourth switch unit including a seventh terminal and an eighth terminal, the seventh terminal being connected to the sixth terminal, the eighth terminal being connected to the fourth terminal;

a switching control component coupled to the first switch unit, the second switch unit, the third switch unit, and the fourth switch unit; and

a charge storage component connected to the second terminal, the third terminal, the sixth terminal and the seventh terminal;

,

wherein;

the first damping component and the first current storage component are connected in series with a combination of the first switch unit, the second switch unit, the third switch unit, the fourth switch unit, and the charge storage component;

the switching control component is configured to turn on and off each of the first switch unit, the second switch unit, the third switch unit, and the fourth switch unit so as to control one or more currents flowing from the battery to the charge storage component and flowing from the charge storage component to the battery;

wherein the circuit for heating the battery is configured to heat the battery by at least discharging and charging the battery, wherein;

the first damping component is a parasitic resistor of the battery; and

the first current storage component is a parasitic inductor of the battery.

13. The circuit of claim 12 wherein the first charge storage component is a capacitor.