Method for replacing battery pack of hybrid electric vehicle
OwnerHeung Woo Leeinventor
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Abstract
The present invention relates to a method for replacing a battery pack of a hybrid electric vehicle, characterized in that a nickel-metal hydride battery pack in which 28 cell modules with a nominal voltage of 7.2V are arranged in series and in which pack terminals N1 to N15 for voltage sensors are installed alternately in order in the cell modules, is replaced with a lithium-ion battery pack in which a plurality of cell modules with a nominal voltage of 28.8V are arranged in series and in which module terminals R1 to R12 for voltage sensors are respectively installed in the cell modules.
Claims4
A method of replacing a battery pack for an electric vehicle, in which a nickel-metal hydride battery pack, in which 28 cell modules each having a nominal voltage of 7.2 V are disposed in series and pack terminals (N1 to N15) for a voltage sensor are sequentially and alternately installed in the cell modules, is replaced with a lithium-ion battery pack in which a plurality of cell modules having a nominal voltage of 28.8 V are disposed in series and module terminals (R1 to R12) for a voltage sensor are installed in the cell modules, the method comprising:
- operation A) of separating and removing the nickel-metal hydride battery pack from an electronic control unit (ECU) for a battery of the nickel-metal hybrid electric vehicle and identifying 15 voltage sensor terminals connected to the pack terminals (N1 to N15) among voltage sensor terminals (E1 to E20) disposed in the ECU;
- operation B) of connecting seven cell modules constituting the lithium-ion battery pack in series and assembling a recombinant lithium-ion battery pack having the same nominal voltage of 201.6 V as the nickel-metal hydride battery pack;
- operation C) of sequentially identifying 15 module terminals having the same cumulative voltages as the pack terminals (N1 to N15) of the nickel-metal hydride battery among 84 module terminals [(R1 to R12)×(M1 to M7)] installed in cell modules (M1 to M7) of the recombinant lithium-ion battery pack and constructing a battery management system (BMS) corresponding to the nickel-metal hydride battery pack;
- operation D) of connecting the 15 module terminals of the recombinant lithium-ion battery pack identified in operation C) to the 15 voltage sensor terminals of the ECU identified in operation A) according to the BMS;
- and
- operation E) of installing a temperature sensor and an air sensor of the ECU to the recombinant lithium-ion battery pack and connecting a negative electrode output cable and a positive electrode output cable.
The method of claim, 3, wherein the hybrid cable is manufactured by connecting the cable wires (L1 to L15) and the 15 socket terminal wires remaining in the socket terminals (S1 to S7) as follows:
- L1 and L2 are connected to the wires of socket S1 corresponding to module terminals R3 and R1, respectively,
- L3 and L10 are connected to the wires of socket S2 corresponding to module terminals R3 and R1, respectively,
- L11 and L12 are connected to the wires of socket S3 corresponding to module terminals R3 and R1, respectively,
- L4 and L5 are connected to the wires of socket S4 corresponding to module terminals R3 and R1, respectively,
- L6 and L13 are connected to the wires of socket S5 corresponding to module terminals R3 and R1, respectively,
- L14 and L15 are connected to the wires of socket S6 corresponding to module terminals R3 and R1, respectively,
- L7 and L8 are connected to the wires of socket S7 corresponding to module terminals R3 and R1, respectively, and
- L9 is connected to the wire of socket S1 corresponding to the module terminal R5.
Dependencies are inferred from the claim text.