Electric vehicle running control system
View Patent ↗An electric vehicle running control system is provided. The electric vehicle running control system comprises a heating circuit coupled with an in-vehicle battery and configured to heat the in-vehicle battery. The vehicle running control system further comprises a load capacitor and a first current storage element. The first current storage element may be coupled with the load capacitor and the heating circuit respectively configured to reduce interference between the heating circuit and the load capacitor.
1. An electric vehicle running control system, comprising:
a heating circuit coupled with an in-vehicle battery and configured to heat the in-vehicle battery;
a load capacitor, wherein one end of the load capacitor is coupled with one end of the heating circuit; and
a first current storage element, wherein one end of the first current storage element is coupled with the other end of the load capacitor, the other end of the first current storage element is coupled with the other end of the heating circuit, and the first current storage element is configured to reduce interference between the heating circuit and the load capacitor,
wherein the heating circuit comprises a damping element, a bidirectional switchgear, a second current storage element and a first charge storage element, and
wherein the damping element and the second current storage element are connected in series to form a first circuit, the bidirectional switchgear and the first charge storage element are connected in series to form a second circuit, one end of the first circuit is connected with one end of the in-vehicle battery, the other end of the first circuit is connected with one end of the second circuit and one end of the first current storage element respectively, the other end of the second circuit is connected with the load capacitor and the other end of the in-vehicle battery.
2. The electric vehicle running control system according to claim 1 , further comprising a heating circuit control module configured to control the heating circuit to connect with or disconnect from the in-vehicle battery by turning the bidirectional switchgear to on state or off state.
3. The electric vehicle running control system according to claim 1 , wherein the damping element comprises an internal parasitic resistor of the in-vehicle battery, and the second current storage element comprises an internal parasitic inductor of the in-vehicle battery.
4. The electric vehicle running control system according to claim 1 , wherein the damping element comprises a resistor, each of the first current storage element and the second current storage element comprises an inductor, and the first charge storage element comprises a capacitor.
5. The electric vehicle running control system according to claim 1 , wherein the heating circuit further comprises an energy summing unit configured to sum energy in the heating circuit and energy in the in-vehicle battery after the bidirectional switchgear is turned to off state, and the energy summing unit comprises a polarity reversing unit configured to reverse a voltage polarity of the first charge storage element after the bidirectional switchgear is turned to off state.
6. The electric vehicle running control system according to claim 1 , wherein the heating circuit further comprises an energy transferring unit configured to transfer energy in the heating circuit to an energy storage element after the bidirectional switchgear is turned to off state, and wherein the energy transferring unit comprises an electric power recharging unit configured to transfer the energy in the heating circuit to the energy storage element after the bidirectional switchgear is turned to off state.
7. The electric vehicle running control system according to claim 1 , wherein the heating circuit further comprises an energy summing and transferring unit configured to transfer part of energy in the heating circuit to an energy storage element after the bidirectional switchgear is turned to off state, and sum remaining energy in the heating circuit and energy in the in-vehicle battery.
8. The electric vehicle running control system according to claim 7 , wherein the energy summing and transferring unit comprises an energy summing unit and an energy transferring unit,
wherein the energy transferring unit is configured to transfer part of the energy in the heating circuit to the energy storage element after the bidirectional switchgear is turned to off state,
the energy summing unit is configured to sum the remaining energy in the heating circuit and the energy in the in-vehicle battery after part of the energy is transferred by the energy transferring unit.
9. The electric vehicle running control system according to claim 7 , wherein
the polarity reversing unit comprises a first single-pole double-throw switch coupled with ends of the first charge storage element respectively, and a second single-pole double-throw switch coupled with ends of the first charge storage element respectively,
a lead-in wire of the first single-pole double-throw switch coupled with the heating circuit, a first lead-out wire of the first single-pole double-throw switch coupled with a first pole plate of the first charge storage element, a second lead-out wire of the first single-pole double-throw switch coupled with a second pole plate of the first charge storage element,
a lead-in wire of the second single-pole double-throw switch coupled with the heating circuit, a first lead-out wire of the second single-pole double-throw switch coupled with the second pole plate of the first charge storage element, a second lead-out wire of the second single-pole double-throw switch coupled with the first pole plate of the first charge storage element, and
the heating circuit control module coupled with the first single-pole double-throw switch and the second single-pole double-throw switch respectively, wherein the heating circuit control module is configured to reverse the voltage polarity of the first charge storage element.
10. The electric vehicle running control system according to claim 7 , wherein the polarity reversing unit comprises:
a third current storage element;
a first switch coupled with the first charge storage element and the third current storage element in series, the heating circuit control module coupled with the first switch configured to reverse the voltage polarity of the first charge storage element by turning the first switch to on state; and
a first unidirectional semiconductor element, wherein the first unidirectional semiconductor element is coupled between the first charge storage element and the third current storage element or between the third current storage element and the first switch.
11. The electric vehicle running control system according to claim 7 , wherein the polarity reversing unit comprises:
a second charge storage element; and
a first DC-DC module, the heating circuit control module coupled with the first DC-DC module to transfer energy in the first charge storage element to the second charge storage element, and transfer energy in the second charge storage element to the first charge storage element.
12. The electric vehicle running control system according to claim 11 , wherein the electric power recharging unit comprises a second DC-DC module and the heating circuit control module is coupled with the second DC-DC module configured to transfer energy in the first charge storage element to the in-vehicle battery.
13. The electric vehicle running control system according to claim 12 , wherein the energy summing and transferring unit comprises a third DC-DC module, and the heating circuit control module is connected with the third DC-DC module configured to transfer part energy in the first charge storage element to the energy storage element, and sum remaining energy in the first charge storage element and the energy in the in-vehicle battery.
14. The electric vehicle running control system according to claim 13 , further comprising:
an energy limiting circuit configured to limit current flowing between the heating circuit and the in-vehicle battery.
15. The electric vehicle running control system according to claim 14 , wherein
the bidirectional switchgear comprises a first unidirectional branch and a second unidirectional branch to control energy flow between the in-vehicle battery and the heating circuit, and
wherein the heating circuit control module is coupled with one of the first unidirectional branch and the second unidirectional branch.
16. The electric vehicle running control system according to claim 15 , wherein the energy limiting circuit comprises a fourth current storage element in the second unidirectional branch.
17. The electric vehicle running control system according to claim 16 , wherein the first unidirectional branch comprises a second switch coupled in series with a second unidirectional semiconductor element and the second unidirectional branch comprises a third unidirectional semiconductor element, and wherein the heating circuit control module coupled with the second switch is configured to control on and off states of the second switch, and the fourth current storage element is connected with the third unidirectional semiconductor element in series.
18. The electric vehicle running control system according to claim 17 , wherein the second unidirectional branch further comprises a third switch coupled with the third unidirectional semiconductor element, wherein the heating circuit control module is connected with the third switch configured to control the second unidirectional branch.
19. An electric vehicle running control system, comprising:
a first current storage element;
a heating circuit coupled with an in-vehicle battery and configured to heat the in-vehicle battery, the heating circuit comprising a switch coupled in series with a first unidirectional semiconductor element and a second unidirectional semiconductor element coupled with a second current storage element in series; and
a load capacitor,
wherein one end of the load capacitor is coupled with one end of the heating circuit,
wherein one end of the first current storage element is coupled with the other end of the load capacitor, the other end of the first current storage element is coupled with the other end of the heating circuit, and the first current storage element is configured to reduce interference between the heating circuit and the load capacitor,
wherein the heating circuit comprises a damping element, a bidirectional switchgear, a second current storage element and a first charge storage element, and
wherein the damping element and the second current storage element are connected in series to form a first circuit, the bidirectional switchgear and the first charge storage element are connected in series to form a second circuit, one end of the first circuit is connected with one end of the in-vehicle battery, the other end of the first circuit is connected with one end of the second circuit and one end of the first current storage element respectively, the other end of the second circuit is connected with the load capacitor and the other end of the in-vehicle battery.