# US 12,003,100 B2 · Jumper cable, starting power supply and jump start device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,003,100 B2 - Document ID: US12003100B2 - Status: Granted - Kind: B2 - Application number: 17/943,228 - Filed: 2022-09-13 - Published: 2023-06-22 - Granted: 2024-06-04 - Earliest claimed: 2021-12-17 - Assignees: Shenzhen Caross Co., Ltd - Applicants: Shenzhen Caross Co., Ltd - Inventors: Chunyi Zhu; Maolin Liang - Web page: https://patentgrep.com/patent/US12003100B2 ## CPC - H02J 1/122: {Provisions for temporary connection of DC sources of essentially the same voltage, e.g. jumpstart cables} - 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 7/68: using circuits for correcting or protecting against reverse-polarity - H02J 7/927: {with introduction of pulses during the charging process} - H01R 11/22: End pieces terminating in a spring clip - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS ## Abstract Disclosed are a jumper cable, a starting power supply and a jump start device. The jumper cable includes first and second input terminals respectively configured to be connected with positive and negative electrodes of a starting power supply; first and second clamps respectively configured to be clamped to positive and negative electrodes of a vehicle battery; the second input terminal and the second clamp are electrically connected; a switching device, wherein the first input terminal and the first clamp are electrically connected through the switching device; and a non-MCU controlling circuit electrically connected with a controlling terminal of the switching device, configured to control the switching device to be switched on when the clamps are properly connected to the electrodes of the vehicle battery, and configured to not control the switching device to be switched on when the clamps are reversely connected to the electrodes of the vehicle battery. ## Claims ### Claim 1 A jumper cable, comprising: a first input terminal configured to be electrically connected with a positive electrode of a starting power supply; a second input terminal configured to be electrically connected with a negative electrode of the starting power supply; a first clamp configured to be clamped to a positive electrode of a vehicle battery; and a second clamp configured to be clamped to a negative electrode of the vehicle battery; wherein the second input terminal and the second clamp are electrically connected; a switching device having a controlling terminal, wherein the first input terminal and the first clamp are electrically connected through the switching device; and a controlling circuit electrically connected with the controlling terminal of the switching device, and configured to control the switching device to be switched on when the first clamp and the second clamp are properly connected to the electrodes of the vehicle battery such that a path is formed between the starting power supply and the vehicle battery; and configured to not control the switching device to be switched on when the first clamp and the second clamp are reversely connected to the electrodes of the vehicle battery such that no path is formed between the starting power supply and the vehicle battery; wherein the controlling circuit does not include a MCU, wherein, the controlling circuit further comprises a triggering terminal, the triggering terminal is connected in circuit between the first clamp and the switching device; when the first clamp and the second clamp are properly connected to the electrodes of the vehicle battery, the triggering terminal gets electricity from the positive electrode of the vehicle battery through the first clamp, the controlling circuit is triggered to control the switching device to be switched on; and when the first clamp and the second clamp are reversely connected to the electrodes of the vehicle battery, the triggering terminal is unable to get electricity from the first clamp which is connected to the negative electrode of the vehicle battery, the controlling circuit is not triggered and fails to control the switching device to be switched on. ### Claim 2 (depends on 1) The jumper cable according to claim 1, wherein, the controlling circuit comprises a timing circuit electrically connected with the controlling terminal of the switching device; and wherein the timing circuit comprises the triggering terminal and is configured to output a control signal to the controlling terminal of the switching device when the triggering terminal gets electricity; and the control signal is configured to control the switching device to circularly execute activities of switch-on and switch-off in accordance with a preset switching frequency when the starting power supply boosts the vehicle battery. ### Claim 3 (depends on 2) The jumper cable according to claim 2, wherein, the timing circuit comprises a timing management chip U2, a first triode Q9 of an NPN transistor, and a first MOS transistor Q8, and wherein a base of the first triode Q9 serves as the triggering terminal; when the first clamp and the second clamp are properly connected to the electrodes of the vehicle battery respectively, the vehicle battery supplies power to the base of the first triode Q9 through the first clamp, and the first triode Q9 controls the first MOS transistor Q8 to conduct, such that, an output of the starting power supply, after a voltage stabilization, supplies power to the timing management chip U2 through the first MOS transistor Q8; and an output of the timing management chip U2 is electrically connected with the controlling terminal of the switching device, and is configured to output the control signal. ### Claim 4 (depends on 3) The jumper cable according to claim 3, wherein, the timing management chip U2 is an NE555 timing chip; the timing circuit further comprises: a first resistor R2, a second resistor R30, a third resistor R31, a fourth resistor R32, a fifth resistor R38, a first capacitor C14, a second capacitor C16, a third capacitor C17, a first diode D14, and a second diode D15; a first terminal of the first resistor R2 is electrically connected with the first clamp, a second terminal of the first resistor R2 is electrically connected with the base of the first triode Q9, an emitter of the first triode Q9 is grounded, the output of the starting power supply after the voltage stabilization is connected with a collector of the first triode Q9 through the fifth resistor R38; after the voltage stabilization, the output of the starting power supply is connected with a source of the first MOS transistor Q8; a gate of the first MOS transistor Q8 is electrically connected with the collector of the first triode Q9, and a drain of the first MOS transistor Q8 is grounded through the second capacitor C16; and a first pin of the timing management chip U2 is grounded, a fifth pin of the timing management chip U2 is grounded through the first capacitor C14, a fourth pin and a eighth pin of the timing management chip U2 are both electrically connected with the drain of the first MOS transistor Q8; a second pin and a sixth pin of the timing management chip U2 are both electrically connected with a first terminal of the third capacitor C17, and a second terminal of the third capacitor C17 is grounded; the second pin and the sixth pin of the timing management chip U2 are further electrically connected with an anode of the second diode D15, and a cathode of the second diode D15 is electrically connected with the drain of the first MOS transistor Q8 successively through the second resistor R30 and the fourth resistor R32; a seventh pin of the timing management chip U2 is electrically connected with an anode of the first diode D14, and a cathode of the first diode D14 is electrically connected with the first terminal of the third capacitor C17; the seventh pin of the timing management chip U2 is further electrically connected with a point where the second resistor R30 and the fourth resistor R32 are connected in series; and a third pin of the timing management chip U2 is electrically connected with the controlling terminal of the switching device through the third resistor R31. ### Claim 5 (depends on 3) The jumper cable according to claim 3, wherein, the jumper cable further comprises a delay circuit; an output terminal of the delay circuit is electrically connected with the controlling terminal of the switching device, and is configured to further control a maximum conduction time of the switching device in the form of delay when the timing circuit controls the switching device, and controls the switching device to be switched off when a present starting ignition time reaches a preset maximum conduction time. ### Claim 6 (depends on 1) The jumper cable according to claim 1, wherein, the jumper cable further comprises a normal working indicator; the normal working indicator is connected between the switching device and the first input terminal, and is configured to indicate a control state of the controlling circuit for the switching device when the first clamp and the second clamp are properly connected to the electrodes of the vehicle battery. ### Claim 7 (depends on 1) The jumper cable according to claim 1, wherein, the jumper cable further comprises a reverse connection indicator; the reverse connection indicator is connected between the second clamp and the first clamp, and is configured to illuminate when the first clamp and the second clamp are reversely connected to the electrodes of the vehicle battery. ### Claim 8 (depends on 1) The jumper cable according to claim 1, wherein, the jumper cable further comprises: an unidirectional conducting component having a first terminal connected in circuit between the second input terminal and the second clamp and a second terminal grounded, wherein a conduction direction of the unidirectional conducting component is from the ground to the second clamp, and configured to ensure that the switching device is not to be switched on through an unidirectional conducting characteristic, thereby protecting the jumper cable when the first clamp and the second clamp are reversely connected to the electrodes of the vehicle battery. ### Claim 9 (depends on 8) The jumper cable according to claim 8, wherein, the unidirectional conducting component comprises a third diode D12, an anode of the third diode D12 is grounded, and a cathode of the third diode D12 is connected with the second clamp. ### Claim 10 (depends on 1) The jumper cable according to claim 1, wherein, the switching device comprises a power relay. ### Claim 11 (depends on 1) A jump start device, comprising a starting power supply, and a jumper cable according to claim 1. ### Claim 12 A starting power supply, configured to be connected to a jumper cable having first and second input terminals, wherein, the starting power supply comprises a positive electrode and a negative electrode, the negative electrode is configured to be electrically connected with the second input terminal of the jumper cable; the jumper cable further comprises a first clamp configured to be clamped to a positive electrode of a vehicle battery and a second clamp configured to be clamped to a negative electrode of the vehicle battery; the first input terminal is electrically connected with the first clamp, and the second input terminal is electrically connected with the second clamp; wherein the starting power supply further comprises: a switching device having a controlling terminal, wherein the first input terminal and the positive electrode of the starting power supply are electrically connected through the switching device; and a controlling circuit electrically connected with the controlling terminal of the switching device, and configured to control the switching device to be switched on when the first clamp and the second clamp are properly connected to the electrodes of the vehicle battery such that a path is formed between the starting power supply and the vehicle battery; and configured to not control the switching device to be switched on when the first clamp and the second clamp are reversely connected to the electrodes of the vehicle battery such that no path is formed between the starting power supply and the vehicle battery; wherein the controlling circuit does not include a MCU, wherein, the controlling circuit further comprises a triggering terminal, the triggering terminal is electrically connected to a position whereby the switching device and the first input terminal are connected; when the triggering terminal gets electricity from a wire between the first input terminal and the switching device, the controlling circuit is triggered to control the switching device to be switched on; and when the triggering terminal fails to get electricity from the wire between the first input terminal and the switching device, the controlling circuit is not triggered and fails to control the switching device to be switched on. ### Claim 13 (depends on 12) The starting power supply according to claim 12, further comprising an unidirectional conducting component having a first terminal connected in circuit between the switching device and the second input terminal and a second terminal grounded, wherein unidirectional conducting component has a conduction direction from the ground to the second input terminal, and is configured to ensure that the switching device is not to be switched on through an unidirectional conducting characteristic, thereby protecting the jumper cable when the first clamp and the second clamp are reversely connected to the electrodes of the vehicle battery. ### Claim 14 (depends on 13) The starting power supply according to claim 13, wherein, the unidirectional conducting component comprises a third diode D12, an anode of the third diode D12 is grounded, and a cathode of the third diode D12 is connected with the second input terminal. ### Claim 15 (depends on 12) The starting power supply according to claim 12, wherein, the switching device comprises a power relay. ### Claim 16 (depends on 12) The starting power supply according to claim 12, wherein, the controlling circuit comprises a timing circuit electrically connected with the controlling terminal of the switching device; and the timing circuit comprises the triggering terminal and is configured to output a control signal to the controlling terminal of the switching device when the triggering terminal gets electricity; and the control signal is configured to control the switching device to circularly execute activities of switch-on and switch-off in accordance with a preset switching frequency when the starting power supply boosts the vehicle battery. ### Claim 17 (depends on 16) The starting power supply according to claim 16, wherein, the timing circuit comprises a timing management chip U2, a first triode Q9 of an NPN transistor, and a first MOS transistor Q8, and wherein a base of the first triode Q9 serves as the triggering terminal; when the first clamp and the second clamp are properly connected to the electrodes of the vehicle battery, the vehicle battery passes successively through the first clamp and the first input terminal and supplies power to the base of the first triode Q9, and the first triode Q9 controls the first MOS transistor Q8 to conduct, such that, an output of the starting power supply after a voltage stabilization supplies power to the timing management chip U2 through the first MOS transistor Q8; and an output of the timing management chip U2 is electrically connected with the controlling terminal of the switching device, and is configured to output the control signal. ### Claim 18 (depends on 17) The starting power supply according to claim 17, further comprising a delay circuit; an output terminal of the delay circuit is electrically connected with the controlling terminal of the switching device, and is configured to further control a maximum conduction time of the switching device in the form of delay when the timing circuit controls the switching device, and controls the switching device to be switched off when a present starting ignition time reaches a preset maximum conduction time.