Systems, methods and devices for managing power systems and energy storage devices, such as a rechargeable batteries, at operational temperature limits of the energy storage device. The systems control the operation of a charging device in a low temperature operating mode below a charging low temperature limit of the energy storage device at which the energy storage device may be damaged or dangerous if in a charging state. The system controls a current output of the charging device to provide at least some of the power required to power a heater which heats the energy storage device while at the same time avoiding the energy storage device going into a charging state, based on the one or more sensor signals.

Disclosed herein is a switching board having switching elements for temperature measurement mounted on a printed circuit board (PCB) having a circuit electrically connected to a unit cell constituting a battery module, the switching board including an upper board having a pair of switching elements, a temperature detection element, and one or more vertical through holes, the switching elements being electrically connected to the circuit, the temperature detection element and the vertical through holes being disposed between the switching elements, and a lower board having a heating pad at a position corresponding to the vertical through holes and the temperature detection element.

The invention relates to a temperature-control device for the temperature control of an energy source, wherein the temperature-control device comprises a temperature-control unit, which has at least one Peltier element which is arranged between an accommodation area for the energy source and a fluid area in a thermally effective manner. Furthermore, the temperature-control device comprises a control unit for supplying voltage to the Peltier element, wherein the control unit is designed to supply a voltage to the Peltier element, which causes the Peltier element to transfer heat from the hotter part of the accommodation area or fluid area to the colder part of the accommodation area or fluid area.

In accordance with one embodiment, a solid-state battery system includes a first anode, a first cathode, a first solid-state electrolyte layer positioned between the first anode and the first cathode, a housing enclosing the first anode, the first cathode, and the first solid-state electrolyte layer, and at least one thermal control wire positioned within the housing and configured to modify a temperature within the housing.

Systems and methods for storing energy for use by an electric vehicle are disclosed. Systems can include an electric vehicle battery pack including a rack configured to couple a plurality of independently removable battery strings to the vehicle, the battery strings configured to be selectively coupled in parallel to a vehicle power bus. The battery strings may include a housing, a plurality of electrochemical cells disposed within the housing, a circuit for electrically connecting the electrochemical cells, a positive high-voltage connector, a negative high-voltage connector, a switch within the housing, and a string control unit configured to control the switch. Each battery string can include a coolant inlet and a coolant outlet configured to couple with and sealingly uncouple from an external coolant supply conduit and an external coolant return conduit, and an auxiliary connector configured to couple with an external communications system and/or an external low-voltage power supply.

A power electronics assembly may include a power electronics device, a packaging assembly, a thermal management system, and an emitter. The packaging assembly supports power electronics device. The thermal management system supports the packaging assembly and includes a thermal plate to deliver coolant for thermally communicating with the device. The thermal plate defines a channel with a wall. The emitter is arranged with the wall to form a peristaltic pump to adjust a cross-sectional area of the channel to control a flow of coolant therethrough. A membrane may be partially secured to the wall and include one of dielectric particles or magnetic particles. The emitter may selectively output one of a voltage, an electric field, or a magnetic field to impart a force on the particles to move the membrane and adjust the cross-sectional area of the channel to control a flow of coolant therethrough.

Systems and methods for monitoring the temperature of a liquid are disclosed herein. Systems can include a thermistor in contact with a liquid coolant and circuitry configured to measure a temperature of the thermistor by applying a nominal current through the thermistor and detecting a voltage drop across the thermistor. The circuitry may be further configured to apply a current pulse greater than the nominal current through the thermistor, detect a transient thermistor response to the current pulse, and compare the detected transient thermistor response to an expected transient response. The circuitry may be capable of determining if the thermistor is immersed in a fluid or at least partially located within a fluid-free region based on comparing the detected transient thermistor response to the expected transient response.

Systems and methods for monitoring the temperature of a liquid are disclosed herein. Systems can include a thermistor in contact with a liquid coolant and circuitry configured to measure a temperature of the thermistor by applying a nominal current through the thermistor and detecting a voltage drop across the thermistor. The circuitry may be further configured to apply a current pulse greater than the nominal current through the thermistor, detect a transient thermistor response to the current pulse, and compare the detected transient thermistor response to an expected transient response. The circuitry may be capable of determining if the thermistor is immersed in a fluid or at least partially located within a fluid-free region based on comparing the detected transient thermistor response to the expected transient response.

A cooling module for an electrical energy storage system for an electric drive vehicle. The cooling module has an exchanger plate that is hollow on the inside so as to have, on the inside, a circulation chamber that is designed to contain a cooling liquid. The exchanger plate has: an inlet opening that is obtained through a front wall of the exchanger plate and is designed to allow the cooling liquid to flow into the circulation chamber, and an outlet opening that is obtained through a rear wall of the exchanger plate and is designed to allow the cooling liquid to flow out of the circulation chamber. The cooling module has a plurality of interface elements, which are placed inside the circulation chamber, are shaped like a wave, and are arranged in rows.

In general, this disclosure includes systems, methods, and techniques for inducing electrical current through one or more battery banks. For example, a circuit may include a switching element. The circuit may be configured to draw, using the switching element, a current from a first battery bank when the switching element is turned on, the first battery bank emitting an excess current after the switching element is turned off, where the current increases a temperature of the first battery bank. Additionally, the circuit may be configured to deliver at least some of the excess current to a second battery bank when the switching element is turned off, where the excess current charges the second battery bank, and where the excess current increases a temperature of the second battery bank.