INTEGRATED BATTERY SENSOR FOR MULTIPLE BATTERY MODULES

• US 20150293180A1
• Filed: 04/02/2015
• Published: 10/15/2015
• Est. Priority Date: 04/11/2014
• Status: Active Grant

• Current Assignee: CPS Technology Holdings, LLC
• Original Assignee: Johnson Controls Technology Company (Johnson Controls International plc)
• Inventors: Dulle, Ronald J.
• Granted Patent: US 11,112,463 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60L 2240/545 Temperature
• CPC Class Codes: B60L 2240/547 Voltage
• CPC Class Codes: B60L 2240/549 Current
• CPC Class Codes: B60L 58/19 Switching between serial connection and parallel connection of battery modules
• CPC Class Codes: B60L 58/20 having different nominal voltages
• CPC Class Codes: G01R 31/364 Battery terminal connectors with integrated measuring arrangements
• CPC Class Codes: G01R 31/374 with means for correcting the measurement for temperature or ageing
• CPC Class Codes: G01R 31/378 specially adapted for the type of battery or accumulator
• CPC Class Codes: G01R 31/379 for lead-acid batteries
• CPC Class Codes: G01R 31/3835 involving only voltage measurements
• CPC Class Codes: G01R 31/3842 combining voltage and current measurements
• CPC Class Codes: G01R 31/388 involving voltage measurements
• CPC Class Codes: G01R 31/392 Determining battery ageing or deterioration, e.g. state of health
• CPC Class Codes: G01R 31/396 Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 10/06 Lead-acid accumulators semi-lead accumulators H01M10/20
• CPC Class Codes: H01M 10/48 Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569
• CPC Class Codes: H01M 10/482 for several batteries or cells simultaneously or sequentially
• CPC Class Codes: H01M 10/486 for measuring temperature
• CPC Class Codes: H01M 16/00 Structural combinations of different types of electrochemical generators
• CPC Class Codes: H01M 2010/4271 : Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
• CPC Class Codes: H01M 2220/20 : Batteries in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: H01M 50/569 : Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals battery terminal connectors with integrated measuring arrangements G01R31/364
• CPC Class Codes: H02J 7/0016 : using shunting, discharge or bypass circuits
• CPC Class Codes: Y02E 60/10 : Energy storage using batteries
• CPC Class Codes: Y02P 70/50 : Manufacturing or production processes characterised by the final manufactured product
• CPC Class Codes: Y02T 10/70 : Energy storage systems for electromobility, e.g. batteries

Abstract

The present disclosure includes a method that includes receiving, via a processor disposed within a lithium ion battery module, a voltage signal associated with a resistor coupled to a negative terminal of the lithium ion battery module. The negative terminal of the lithium ion battery module is coupled to a negative terminal of a lead acid battery module. The method also includes determining, via the processor, one or more properties associated with the lead acid battery module based on the voltage signal.

Claims

1. An automotive battery system, comprising:

a lead acid battery module configured to couple to an electrical system;

a lithium ion battery module coupled in parallel with the lead acid battery module;

a first terminal of the lithium ion battery corresponding to a positive voltage;

a second terminal and a third terminal of the lithium ion battery corresponding to a first negative voltage;

a resistor coupled to the second terminal and the third terminal, wherein the second terminal is coupled to a fourth terminal of the lead acid battery module, and wherein the fourth terminal corresponds to a second negative voltage; and

a control system disposed within the lithium ion battery module, wherein the control system is configured to receive a voltage signal associated with the resistor, and wherein the voltage signal is associated with a voltage of the lead acid battery module.

2. The battery system of claim 1, wherein the control system is configured to determine a state of charge (SOC), a state of health (SOH), or any combination thereof associated with the lead acid battery module based on the voltage signal.

3. The battery system of claim 1, wherein the lead acid battery module comprises a temperature sensor configured to measure an internal temperature of the lead acid battery module.

4. The battery system of claim 3, wherein the control system is configured to:

receive the temperature measurement from the temperature sensor; and

determine a state of charge (SOC), a state of health (SOH), or any combination thereof associated with the lead acid battery module based on the temperature measurement.

5. The battery system of claim 1, wherein the lithium battery module comprises a plurality of battery cells.

6. The battery system of claim 5, wherein the plurality of battery cells comprise at least two separate sets of battery cells coupled in series with each other.

7. The battery system of claim 5, wherein the control system is configured to:

receive data associated with the plurality of battery cells;

determine a state of charge (SOC), a state of health (SOH), or any combination thereof associated with the lithium ion battery module based on the data.

8. The battery system of claim 5, comprising an additional resistor coupled between the plurality of battery cells and the third terminal.

9. The battery system of claim 1, wherein the lithium ion battery module comprises a chemistry having a higher coulombic efficiency than the lead acid battery module.

10. A method, comprising:

receiving, via a processor disposed within a lithium ion battery module, a voltage signal associated with a resistor coupled to a negative terminal of the lithium battery module, wherein the negative terminal of the lithium ion battery module is coupled to a negative terminal of a lead acid battery module;

determining, via the processor, one or more properties associated with the lead acid battery module based on the voltage signal.

11. The method of claim 10, wherein the properties comprise a current being conducted through the lead acid battery module.

12. The method of claim 10, wherein the properties comprise a state of charge (SOC), a state of health (SOH), or any combination thereof associated with the lead acid battery module.

13. The method of claim 10, receiving, via the processor, a temperature measurement associated with the lead acid battery module.

14. The method of claim 13, determining the properties based on the temperature measurement.

15. A battery module for use in a vehicle, comprising:

a housing;

a first terminal, a second terminal, and a third terminal, wherein the first terminal and the second terminal are associated with a same polarity;

a plurality of battery cells;

a first resistor coupled to the plurality of battery cells and the first terminal;

a second resistor coupled to the first resistor and to the second terminal, wherein the second terminal is configured to couple to a fourth terminal of a separate battery module; and

a control system configured to;

receive a first voltage signal associated with the first resistor and a second voltage signal associated with the second resistor; and

determine a first set of properties associated with the separate battery module based on the second voltage signal.

16. The battery module of claim 15, wherein the plurality of battery cells comprises a plurality of lithium ion cells.

17. The battery module of claim 15, wherein the separate battery module comprises a plurality of lead acid battery cells.

18. The battery module of claim 15, wherein the control system is configured to determine a second set of properties associated with the battery module.

19. The battery module of claim 15, wherein the control system is configured to receive a temperature measurement associated with the separate battery module.

20. The battery module of claim 19, wherein the control system is configured to determine the first set of properties based on the temperature measurement.