JUMP STARTING DEVICE WITH A JUMP START CURRENT SHARING SYSTEM, AND A JUMP START CURRENT SHARING METHOD

Abstract

Provided is a jump starting device for charging a depleted discharge battery, the device includes a rechargeable battery having a positive terminal and negative terminal; a switch comprising a jump start current sharing circuit electrically connected to the rechargeable battery; and a battery clamp electrically connected to the jump start current sharing circuit.

Claims

1. A jump starting device for charging a depleted discharge battery, the device comprising: a rechargeable battery having a positive terminal and negative terminal; a switch comprising a jump start current sharing circuit electrically connected to the rechargeable battery; and a battery clamp electrically connected to the jump start current sharing circuit.

2. The device according to claim 1, wherein the switch comprises one or more relays and one or more field effect transistors (FETs) arranged in parallel in the jump start current sharing circuit.

3. The device according to claim 1, wherein the switch comprises a single relay and multiple field effect transistors (FETs) arranged in parallel in the jump start current sharing circuit.

4. The device according to claim 1, wherein the switch comprises multiple relays and a single field effect transistor (FET) arranged in parallel in the jump start current sharing circuit.

5. The device according to claim 1, wherein the switch comprises multiple relays and multiple field effect transistors (FETs) arranged in parallel in the jump start current sharing circuit.

6. The device according to claim 1, wherein the one or more relays and the one or more FETs are configured to be selectively switched on or off.

7. The device according to claim 1, further comprising an electrical conductor or bus for electrically connecting the battery clamp to the jump start current sharing circuit.

8. The device according to claim 7, wherein the electrical conductor or bus is a copper plate.

9. The device according to claim 1, wherein the switch is electrically connected to the negative terminal of the rechargeable battery.

10. The device according to claim 1, wherein the rechargeable battery is a lithium ion battery.

11. The device according to claim 1, wherein the battery clamp is a negative polarity battery clamp connectable to a negative terminal of the depleted or discharged battery to be charged.

12. A jump start current sharing method for use in a jump starter for charging a depleted or discharged battery, the method comprising: providing a rechargeable battery; providing a battery clamp connectable to the depleted or discharged battery; and providing a switch between the rechargeable battery and the battery clamp, wherein the switch comprises one or more relays and one or more field effect transistors (FET) connected together in parallel.

13. The method according to claim 12, wherein the switch comprises one or more relays and one or more field effect transistors (FETs) arranged in parallel in the jump start current sharing circuit.

14. The method according to claim 12, wherein the switch comprises a single relay and multiple field effect transistors (FETs) arranged in parallel in the jump start current sharing circuit.

15. The method according to claim 12, wherein the switch comprises multiple relays and a single field effect transistor (FET) arranged in parallel in the jump start current sharing circuit.

16. The method according to claim 12, wherein the switch comprises multiple relays and multiple field effect transistors (FETs) arranged in parallel in the jump start current sharing circuit.

17. The method according to claim 12, wherein the one or more relays and the one or more FETs can be selectively switched on or off.

18. The method according to claim 12, further comprising an electrical conductor or bus for electrically connecting the battery clamp to the jump start current sharing circuit.

19. The method according to claim 17, wherein the electrical conductor or bus is a copper plate.

20. The method according to claim 12, wherein the jump start current sharing circuit is electrically connected to the negative terminal of the rechargeable battery.

21. The method according to claim 12, wherein the rechargeable battery is a lithium ion battery.

22. The method according to claim 12, wherein the battery clamp is a negative polarity battery clamp connectable to a negative terminal of the depleted or discharged battery to be charged.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0032] FIG. 1 is a circuit diagram of a jump start current sharing system and circuit according to the present invention.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

[0033] A jump start current sharing system 10 for use in a jump starter according to the present invention is shown in FIG. 1.

[0034] The jump start current sharing circuit system 10 comprises or consists of: [0035] 1) a switch 12 comprising a jump start current sharing circuit comprising or consisting of: [0036] i) a relay 14 having a switch arrangement 14A, 14B, 14C and a coil arrangement 14D, 14F, 14E; [0037] ii) a FET1 16 having a GATE 1 16A, the FET1 16 connected in parallel relative to the relay 14; [0038] iii) a FET2 18 having a GATE 2 18A, the FET2 18 connected in parallel relative to the relay 14; [0039] iv) a FETN 20 having a GATE N 20A, the FETN 20 connected in parallel relative to the relay 14; and [0040] v) an electrical conductor (e.g. copper) 22 connected between the relay 14, FET1 16, FET2, 18, FETN 20 and the black (negative) battery clamp 26. [0041] 2) a lithium ion battery 24 having a negative terminal connected to the switch 12; and [0042] 3) a black (negative) battery clamp 26 connected to the switch 12.

[0043] The relay 14 of the switch 12, for example, can be a single relay or multiple relays. The FETs 16, 18, 20 of the switch 12, for example, can be a single FET or multiple FETs.

[0044] The electrical conductor 22, for example, is a metal cable or metal plate (e.g. made of copper metal). The electrical conductor 22 is selected or configured to accommodate a significant current from the jump start current sharing circuit 12 to the black (negative) battery clamp 26.

[0045] The switch 12 can be provided with various switches to selectively connect the relay 14, FET1 16, FET2 18, FETN 20, for example, depending on the operating ambient conditions (e.g. ambient temperature, jump starter temperature), conditions of the depleted or discharged battery being charged (e.g. depleted or discharged voltage, current, battery temperature), and/or current demands to charge the depleted or discharged battery.