In general, the subject matter of the disclosure relates to an orientation agnostic battery placement device. Connecting a battery in a reversed polarity configuration may cause the battery-powered electronic devices to not work or in some cases may even cause damage to the device itself. The disclosed orientation agnostic battery placement device includes a latch relay device that includes a first latch switch that electrically connects the first and second terminals of a battery compartment to the positive and negative electrical power connections of a load circuitry associated with the battery-powered electronic device respectively when the battery received within the battery compartment is in a first orientation and a second switch that electrically connects the first and second terminals of the battery compartment to the negative and positive electrical power connections of the load circuitry respectively when the battery received within the battery compartment is in a second orientation.

This charger 1 is provided with: a battery housing unit 2 including a first contact T1 and a second contact T2 which touch the respective electrode terminals of a battery BAT to be housed therein; a high-potential power supply line 3 and a low-potential power supply line 4 to which power for charging the battery BAT is supplied; a connection switching circuit 5 capable of switching between a first connection state in which the first contact T1 is connected to the high-potential power supply line 3 and the second contact T2 is connected to the low-potential power supply line 4 and a second connection state in which the second contact T2 is connected to the high-potential power supply line 3 and the first contact T1 is connected to the low-potential power supply line 4; and a control device 7 for controlling the connection switching circuit 5 to perform charging control on the battery BAT. The control device 7 performs preliminary charging on the battery BAT in the first connection state and, when a battery voltage VB does not exceed a set voltage VS, switches the connection state to the second connection state and performs preliminary and normal charging on the battery BAT.

The present disclosure provides a smart connection device, a jump starter and a battery clamp. The smart connection device includes a power connection terminal coupled to an energy storage module, a load connection terminal coupled to an external load, a switch element, a power supply loop, and a reverse connection detection module. The reverse connection detection module outputs a first control signal to the power supply loop, when the external load is reversely coupled to the load connection terminal. The power supply loop is in a disconnection state and supplies no power to the switch element when it receives the first control signal. The switch element is in an off state when it receives no power supply, to make the power connection terminal and the load connection terminal be in a disconnection state, thereby preventing the energy storage module from providing a discharge output to the external load.

The present disclosure provides a smart connection device, a jump starter and a battery clamp. The smart connection device includes a switch circuit, a drive signal transmission module and a reverse connection detection module. The drive signal transmission module is configured to transmit a drive signal output by a controller to the switch circuit, so as to conduct the switch circuit. The reverse connection detection module is configured to detect a connection state of the external load through a load connection terminal, and output a corresponding control signal to the drive signal transmission module according to a detection result, wherein the control signal is configured to control a transmission of the drive signal by the drive signal transmission module.

The invention relates to a rechargeable battery discharge device (10) for discharging rechargeable batteries (20) with (a) a first rechargeable battery connection (12.1) for connecting a first rechargeable battery (20.1), (b) a second rechargeable battery connection (12.2) for connecting a second rechargeable battery (20.2), (c) at least a third rechargeable battery connection (12.3) for connecting a third rechargeable battery (20.3) and (d) a load connection (14) for a load (16) for dissipating an electric output during discharging of the rechargeable batteries (20). The invention provides for (e) a discharge circuit (18) comprising (i) a first short circuit switch (24.1), (ii) a first voltmeter (22.1) that is arranged to measure a first rechargeable battery voltage (U.sub.20.1) dropped across the first rechargeable battery connection (12.1), (iii) a second short circuit switch (24.2), (iv) a second voltmeter (22.2) that is arranged to measure a second rechargeable battery voltage (U.sub.20.2) dropped across the second rechargeable battery connection (12.2), (v) a third short circuit switch (24.3), (vi) a third voltmeter (22.3) that is arranged to measure a third rechargeable battery voltage (U.sub.20.3) dropped across the third rechargeable battery connection (12.3), and (vii) a control unit (27), the control unit (27) being designed to automatically carry out a method comprising the steps: (i) for all voltmeters (22.i), detecting the respective rechargeable battery voltage (U.sub.20.i), (ii) when the respective rechargeable battery voltage (U.sub.20.i) exceeds a predetermined minimum voltage (U.sub.min), connecting the corresponding rechargeable battery (20.i) into a series circuit with at least one other rechargeable battery and (iii) when the respective rechargeable battery voltage (U.sub.20.i) does not exceed a minimum voltage (U.sub.min), removing the corresponding rechargeable battery (20.i) from the series circuit by means of the corresponding short circuit switch.

In some examples, a controller circuit comprises: a voltage subtractor circuit having a subtractor output and first and second subtractor inputs, the first subtractor input adapted to be coupled to a first current terminal of a transistor, and the second subtractor input adapted to be coupled to a second current terminal of the transistor; an internal voltage generator circuit having a generator input and a generator output, the generator input adapted to be coupled to the first current terminal; and a gate control circuit having a gate control input and a gate control output, the gate control input coupled to the subtractor output, the gate control output adapted to be coupled to a gate of the transistor, the gate control circuit including a switch coupled between the gate control output and the generator output.

An apparatus for jump starting a vehicle includes a handheld booster device comprising a rechargeable battery pack, a control circuit, a power switch, and an output port, wherein the control circuit detects when it is safe to couple the handheld booster device to the vehicle's battery and connects the rechargeable battery pack to the output port thru the power switch; and a jumper cable device comprising a plug and a pair of cables integrated with the plug, the plug being configured to connect to the output port of the handheld booster device in a specific orientation.

The invention provides a docking charging circuit and an electronic device, including a power supply side module and a receiving side module that can be docked with each other, wherein the power supply side module further includes a power supply side drive unit, a power generating unit, a first switch unit and a first intermediate terminal, and the receiving side module further includes a second intermediate terminal, a first resistance circuit and a second resistance circuit, with the control of the first switch unit by the power supply side drive unit, the first switch unit can be controlled to be turned on when in positive connection to realize power supply, and the first switch unit can be controlled to be turned off when in reverse connection to avoid damage to the devices in the power supply side module and the receiving side module caused by power supply during the reverse connection.

Systems include a coil, a drive circuit, a sense circuit, and a communication and control circuit for providing power inductively to a portable device comprising a battery and an inductive receiver unit including a receiver coil and a receiver circuit. A portable device includes a battery and a receiver unit capable of receiving inductive power from a compatible inductive charging system including a base unit with a primary coil and associated circuit.

Systems/methods for operating a solar charger system. The system comprises: preventing, by a first circuit, damage to the solar charger system when a reverse polarity connection exists between a solar panel and the solar charger system; preventing, by a second circuit, damage to the solar charger system when a reverse polarity connection exists between the battery and the solar charger system; preventing, by a third circuit, damage to the battery when a temperature of a surrounding environment exceeds a pre-defined value while the battery is being charged by the solar charger system; and preventing, by a fourth circuit, back-feed from the battery without any voltage drop or loss while the battery is being charged by the solar charger system.