# US 2012/0074894 A1 · Hybrid battery module and battery management method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2012/0074894 A1 - Document ID: US20120074894A1 - Status: Published application - Kind: A1 - Application number: 13/004,134 - Filed: 2011-01-11 - Published: 2012-03-29 - Earliest claimed: 2010-09-24 - Assignees: Lite-On Clean Energy Technology Corp. - Inventors: Jan-Gee Chen; Ming-Wang Cheng - Web page: https://patentgrep.com/patent/US20120074894A1 ## CPC - H02J 7/00: Circuit arrangements for charging or discharging batteries or for supplying loads from batteries - B60L 50/40: using propulsion power supplied by capacitors - B60L 58/20: having different nominal voltages - B60L 58/21: having the same nominal voltage - H01M 16/00: Structural combinations of different types of electrochemical generators - 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 H02J7/68)} - H02J 7/865: {Battery or charger load switching, e.g. concurrent charging and load supply (H02J7/50 takes precedence)} - H02J 2105/37: exchanging power with electric vehicles [EV] or with hybrid electric vehicles [HEV] - Y02E 60/10: Energy storage using batteries - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A hybrid battery module and a battery management method are provided. The hybrid battery module comprises a first energy storage unit, a second energy storage unit, and a charging unit. The charging unit is coupled between the first energy storage unit and the second energy storage unit for selectively providing a charging path between the first energy storage unit and the second storage unit. The first energy storage unit and the second energy storage unit transmit the energy stored therein to each other through the charging unit to maintain optimum power statuses thereof. ## Claims ### Claim 1 A hybrid battery module for supplying energy to a load terminal, comprising: a first energy storage unit; a second energy storage unit; a charging unit coupled between the first energy storage unit and the second energy storage unit for selectively providing a charging path between the first energy storage unit and the second energy storage unit, so that the first energy storage unit charges the second energy storage unit or the second energy storage unit charges the first energy storage unit; and a power supply switching unit coupled between the first energy storage unit, the second energy storage unit, and the load terminal for selectively electrically connecting the load terminal to the first energy storage unit or the second energy storage unit so as to supply power to the load terminal. ### Claim 2 (depends on 1) The hybrid battery module according to claim 1, wherein a power density of the first energy storage unit is greater than that of the second energy storage unit and an energy density of the second energy storage unit is greater than that of the first energy storage unit. ### Claim 3 (depends on 1) The hybrid battery module according to claim 1, wherein the first energy storage unit is a power type secondary battery and the second energy storage unit is an energy type secondary battery. ### Claim 4 (depends on 1) The hybrid battery module according to claim 1, wherein the first energy storage unit is a supercapacitor and the second energy storage unit is a secondary battery. ### Claim 5 (depends on 1) The hybrid battery module according to claim 1, wherein charging unit restricts a current flowing through the charging path based on power statuses of the first energy storage unit and the second energy storage unit. ### Claim 6 (depends on 5) The hybrid battery module according to claim 5, wherein the charging unit comprises: a current limit unit coupled to the first energy storage unit for limiting the current flowing through the charging path; and a first switch coupled between the current limit unit and the second energy storage unit. ### Claim 7 (depends on 6) The hybrid battery module according to claim 6, wherein the current limit unit comprises: a impedance component coupled between the first energy storage unit and the first switch. ### Claim 8 (depends on 1) The hybrid battery module according to claim 1, wherein the charging unit comprises: a bidirectional DC-DC power converter coupled to the first energy storage unit; and a first switch coupled between the bidirectional DC-DC power converter and the second energy storage unit. ### Claim 9 (depends on 1) The hybrid battery module according to claim 1, wherein the power supply switching unit comprises: a second switch coupled between the first energy storage unit and the load terminal; and a third switch coupled between the load terminal and the second energy storage unit. ### Claim 10 (depends on 1) The hybrid battery module according to claim 1, wherein the power supply switching unit comprises: a bidirectional DC-DC power converter coupled between the first energy storage unit and the second energy storage unit for selectively providing the charging path between the first energy storage unit and the second energy storage unit. ### Claim 11 (depends on 1) The hybrid battery module according to claim 1, wherein the charging unit comprises: a current limit unit coupled to the first energy storage unit for restricting a current flowing through the charging path; and a first switch coupled between the current limit unit and the second energy storage unit; wherein the power supply switching unit comprises: a second switch coupled between the first energy storage unit and the load terminal; and a third switch coupled between the load terminal and the second energy storage unit. ### Claim 12 (depends on 1) The hybrid battery module according to claim 1 further comprising: a battery management circuit coupled to the first energy storage unit, the second energy storage unit, the charging unit, and the power supply switching unit for controlling the charging unit and the power supply switching unit according to power statuses of the first energy storage unit and the second energy storage unit. ### Claim 13 (depends on 12) The hybrid battery module according to claim 12, wherein the battery management unit comprises: a first battery management unit coupled to the first energy storage unit for monitoring the power status of the first energy storage unit; a second battery management unit coupled to the second energy storage unit for monitoring the power status of the second energy storage unit; a current detecting unit coupled to the first energy storage unit and the second energy storage unit for detecting current values of the first energy storage unit and the second energy storage unit; and a control unit coupled to the first battery management unit, the second battery management unit, the current detecting unit, the charging unit, and the power supply switching unit for controlling the charging unit and the power supply switching unit. ### Claim 14 A battery management method suitable for managing a hybrid battery module to supply power to a load terminal, comprising: providing a first energy storage unit and a second energy storage unit; selectively providing a charging path between the first energy storage unit and the second energy storage unit, so that the first energy storage unit charges the second energy storage unit or the second energy storage unit charges the first energy storage unit; and selectively electrically connecting the load terminal to the first energy storage unit or the second energy storage unit so as to supply power to the load terminal. ### Claim 15 (depends on 14) The battery management method according to claim 14 further comprising: restricting a current flowing through the charging path based on power status of the first energy storage unit and the second energy storage unit. ### Claim 16 (depends on 14) The battery management method according to claim 14 further comprising: controlling the charging unit and the power supply switching unit based on power status of the first energy storage unit and the second energy storage unit. ### Claim 17 (depends on 14) The battery management method according to claim 14, wherein a power density of the first energy storage unit is greater than that of the second energy storage unit and an energy density of the second energy storage unit is greater than that of the first energy storage unit. ### Claim 18 (depends on 14) The battery management method according to claim 14, wherein the first energy storage unit is a power type secondary battery and the second energy storage unit is an energy type secondary battery. ### Claim 19 (depends on 14) The battery management method according to claim 14, wherein the first energy storage unit is a supercapacitor and the second energy storage unit is a secondary battery.