Method, battery management system and vehicle for charging awakening

• US 10,363,825 B2
• Filed: 05/16/2017
• Issued: 07/30/2019
• Est. Priority Date: 01/26/2017
• Status: Active Grant

• Current Assignee: Borgward Trademark Holdings GmbH
• Original Assignee: Borgward Trademark Holdings GmbH
• Inventors: Rao, Hang, Wang, Zhongmin
• Primary Examiner(s): Memula, Suresh
• Application Number:
  US15/596,047
• Publication Number:
  US 20180208066A1
• Time in Patent Office: 805 Days
• Field of Search: 320109
• CPC Class Codes: B60L 2250/10 by alarm
• CPC Class Codes: B60L 2250/16 by display
• CPC Class Codes: B60L 3/00 Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption methods or circuit arrangements for monitoring or controlling batteries or fuel cells B60L58/00
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• CPC Class Codes: B60L 58/10 for monitoring or controlling batteries
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 7/0036 using connection detecting circuits H02J7/0034 takes precedence
• CPC Class Codes: H02J 7/0048 Detection of remaining charge capacity or state of charge [SOC]
• CPC Class Codes: H02J 9/005 using a power saving mode for copiers G03G15/5004
• CPC Class Codes: Y02B 70/30 Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/92 Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles
• CPC Class Codes: Y04S 20/20 End-user application control systems

Abstract

The present invention relates to a method, a battery management system and a vehicle for charging awakening. The battery management system includes a wake-up module, used for generating a wake-up signal when the battery management system is in a dormant or power-off state and an external charging plug is connected with a charging interface; and a power management module, used for conducting a power supply circuit between a battery module and a preset function module in the battery management system when receiving the wake-up signal. According to the system for charging wake-up provided by the present invention, the battery management system is automatically woken up when the external charging plug is accessed to charge the vehicle, so the battery management system automatically enters a normal working state from the power-off state or the dormant state.

Claims

1. A battery management system, comprising:

a wake-up module, configured to generate a wake-up signal when the battery management system is in one of a dormant and a power-off state and an external charging plug is connected with a charging interface; and

a power management module, configured to conduct a power supply circuit between a battery module and a preset function module in the battery management system when receiving the wake-up signal.

2. The system of claim 1, further comprising:

a detection module, configured to detect a connection state of the external charging plug and the charging interface; and

a control module, configured to generate at least one of a fault prompt signal and a preset control signal when the connection state is abnormal.

3. The system of claim 2, wherein the detection module is further configured to:

obtain a voltage value across the external charging plug and the charging interface; and

the control module is configured to determine a resistance value across the external charging plug and the charging interface according to the voltage value, and to match the resistance value with a preset resistance value to judge whether the connection state is abnormal or not.

4. The system of claim 2, further comprising:

a switching module, configured to generate a control signal when a preset function switching signal sent by the control module is received, wherein the control signal is configured to control a detection process of the detection module; and

the control module is further configured to generate the preset function switching signal and to send the preset function switching signal to the switching module, when the power supply circuit between the battery module and the preset function module in the battery management system is conducted.

5. The system of claim 4, the wake-up module includes:

a MOS transistor Q1, a resistor R1, a resistor R2 and a diode D1;

a source of the MOS transistor Q1 is connected with a positive electrode of the battery module, a drain of the MOS transistor Q1 is connected with the power management module, and a gate of the MOS transistor Q1 is connected with the positive electrode of the diode D1 through the resistor R2;

a negative electrode of the diode D1 is connected with the charging interface; and

one end of the resistor R1 is respectively connected with the source of the MOS transistor Q1 and the positive electrode of the battery module, and the other end of the resistor R1 is connected with the gate of the MOS transistor Q1.

6. The system of claim 5, the switching module includes:

a triode Q2 and a resistor R4;

a base of the triode Q2 is connected with the control module, a collector of the triode Q2 is connected with the positive electrode of the diode D1, and an emitter of the triode Q2 is grounded; and

one end of the resistor R4 is respectively connected with a switching signal source and the base of the triode Q2, and the other end of the resistor R4 is connected with the emitter of the triode Q2.

7. The system of claim 4, the switching module includes:

a relay; and

a first input end of the relay is connected with the positive electrode of the battery module, a second input end of the relay is connected with a switching signal source, a first output end of the relay is connected with the wake-up module, and a second output end of the relay is grounded.

8. The system of claim 7, the wake-up module includes:

a MOS transistor Q3, a resistor R5 and a resistor R6;

the source of the MOS transistor Q3 is connected with the first output end of the relay, the drain of the MOS transistor Q3 is connected with the power management module, and the gate of the MOS transistor Q3 is connected with the charging interface through the resistor R6; and

one end of the resistor R5 is respectively connected with the first output end of the relay and the source of the MOS transistor Q3, and the other end of the resistor R5 is connected with the gate of the MOS transistor Q3.

9. A vehicle, comprising a battery management system, wherein the battery management system comprises:

a wake-up module, configured to generate a wake-up signal when the battery management system is in one of a dormant and a power-off state and an external charging plug is connected with a charging interface; and

a power management module, configured to conduct a power supply circuit between a battery module and a preset function module in the battery management system when receiving the wake-up signal.

10. A method for charging awakening, comprising:

generating a wake-up signal when a battery management system is in one of a dormant and a power-off state and an external charging plug is connected with a charging interface; and

conducting a power supply circuit between a battery module and a preset function module in the battery management system according to the wake-up signal.

11. The method of claim 10, further comprising:

generating a control signal according to a received preset function switching signal, wherein the control signal is configured to control a detection process of the connection state of the external charging plug and the charging interface.

12. The method of claim 10, further comprising:

obtaining charge quantity of the battery pack in real time, when the power supply circuit between the battery module and the preset function module is conducted and external power supply equipment charges a battery pack of a vehicle; and

sending the charge quantity to a display module to be displayed.

13. The method of claim 12, further comprising:

sending a prompt message to a configured target terminal, when the charge quantity exceeds a preset threshold.

14. The method of claim 12, further comprising:

controlling the control module to enter a low power consumption working state, when the charge quantity reaches a preset electric quantity threshold.