Abstract: A lithium-based battery system for a vehicle includes a plurality of lithium battery cells arranged in series that provide energy to propel the vehicle. Each of the battery cells includes a first terminal, a second terminal, a plurality of lithium battery elements arranged in parallel, a plurality of disconnect switches, and a shunt switch. Each of the battery elements includes a first terminal and a second terminal. The first terminal of each of the battery elements is connected to the first terminal of the battery cell. The second terminal of each of the battery elements is connected to the second terminal of the battery cell via a corresponding one of the disconnect switches. The shunt switch is connected between the first and second terminals of the battery cell. A control module selectively opens and closes the shunt switches and the disconnect switches.

Abstract: An electrical battery includes a plurality of electrical energy generating elements formed by at least one electrochemical cell that is packaged in a flexible sealed envelope, and a system for the mechanical and thermal conditioning of the elements. The conditioning system forms a structural body made from thermally conductive material. The body has two longitudinal members and a plurality of cross-members connecting the longitudinal members so as to form between the cross-members housings in which respectively a generating element is disposed. The body includes a circulation path for a thermal conditioning fluid. The path has two channels, respectively upstream and downstream, that are formed respectively in a longitudinal member and passages formed in each of the cross-members. The passages are in fluid communication on each side with respectively the upstream channel and the downstream channel.

Abstract: The invention relates to a method for managing the heat in an electric battery including a plurality of elements for generating electric power, the method including, when recharging said battery from an external power source, preconditioning said battery at an average temperature T0 and, when using said battery, determining the absolute value ?T2 of the difference between the temperature T0 and the average temperature T of said battery, wherein said method includes activating a heat-conditioning device of the battery when the difference ?T2 is higher than a setpoint C2, said setpoint being established on the basis of the state of charge (SOC) of said battery.

Abstract: A motor vehicle has a low exhaust heat engine (ME) for driving the driven wheels and a system for conditioning the air temperature of the passenger compartment (CAB). The conditioning system includes a reversible heat pump (PAC) which conditions in temperature respectively a distribution loop (DI) and an exhaust loop (RE) through which flows a coolant. The distribution loop (DI) is connected to an exchanger (H2) with the air entering the space compartment (CAB) and is connectable via an electromagnetic valve (EV1) to another exchanger (H1) with the air entering the passenger compartment (CAB). The exhaust loop (RE) is connected to an exchanger (F1) with the outside air. The exhaust loop being further connected to the engine (ME) for exchanging heat with the engine.

Abstract: Methods for managing the heat in an electric battery, including, when recharging said battery, preconditioning at an average temperature T0 and, when using said battery, determining the difference ?T1 between the temperatures of the hottest element and of the coolest element and as the absolute value ?T2 of the difference between the temperature T0 and the average temperature T of said battery. The method includes, when the difference ?T1 is lower than a first setpoint C1, deactivating the circulating device and as the heat-conditioning devices and, when the difference ?T1 is higher than a first setpoint C1 or when the difference ?T2 is higher than a second setpoint C2, activating the fluid-circulating device while keeping the heat-conditioning devices deactivated if the difference ?T2 is lower than the second setpoint C2, or while activating a heat-conditioning device if the difference ?T2 is higher than the second setpoint C2.

Abstract: A lithium-based battery system for a vehicle includes a plurality of lithium battery cells arranged in series that provide energy to propel the vehicle. Each of the battery cells includes a first terminal, a second terminal, a plurality of lithium battery elements arranged in parallel, a plurality of disconnect switches, and a shunt switch. Each of the battery elements includes a first terminal and a second terminal. The first terminal of each of the battery elements is connected to the first terminal of the battery cell. The second terminal of each of the battery elements is connected to the second terminal of the battery cell via a corresponding one of the disconnect switches. The shunt switch is connected between the first and second terminals of the battery cell. A control module selectively opens and closes the shunt switches and the disconnect switches.

Abstract: An electric battery includes a plurality of electric energy generators and a system for mechanical and thermal conditioning of the elements, which system includes a one-piece structural body in which housings are formed in order to each receive an element, in which the housings have at least one internal area of contact with an element, and the contact area is continuous and has a shape suitable for ensuring contact between the area and the periphery of the element, in which the body also includes chambers that each extend around a contact area, and which system also includes a device enabling a thermal conditioning fluid to circulate in the chambers so as to ensure the thermal conditioning of the elements.

Abstract: The invention relates to a method for securing the operation of an electric battery comprising a plurality of electrical energy-generating elements which are mounted within an electricity production circuit, said method providing for monitoring the occurrence of a malfunction of each of said elements and, in case a malfunction of an element is detected, to actuate a shunting of said defective element so the electrical current no longer crosses through said defective element while maintaining the production circuit closed. The invention also relates to a battery in which such a method can be implemented.

Abstract: The invention relates to a method for managing the heat in an electric battery including a plurality of elements for generating electric power, the method including, when recharging said battery from an external power source, preconditioning said battery at an average temperature T0 and, when using said battery, determining the absolute value ?T2 of the difference between the temperature T0 and the average temperature T of said battery, wherein said method includes activating a heat-conditioning device of the battery when the difference ?T2 is higher than a setpoint C2, said setpoint being established on the basis of the state of charge (SOC) of said battery.

Abstract: Methods for managing the heat in an electric battery, including, when recharging said battery, preconditioning at an average temperature T0 and, when using said battery, determining the difference ?T1 between the temperatures of the hottest element and of the coolest element and as the absolute value ?T2 of the difference between the temperature T0 and the average temperature T of said battery. The method includes, when the difference ?T1 is lower than a first setpoint C1, deactivating the circulating device and as the heat-conditioning devices and, when the difference ?T1 is higher than a first setpoint C1 or when the difference ?T2 is higher than a second setpoint C2, activating the fluid-circulating device while keeping the heat-conditioning devices deactivated if the difference ?T2 is lower than the second setpoint C2, or while activating a heat-conditioning device if the difference ?T2 is higher than the second setpoint C2.

Abstract: A method of monitoring the voltage UELT of an electrical energy generating element of a battery, comprising measuring the voltage UBRUT at the terminals of said element by means of a subtractor assembly and carrying out a calibrating procedure. The invention also relates to a monitoring device for the implementation of this method, a system for monitoring voltages of elements of a battery as well as an electric battery comprising at least one module formed from several electrical energy generating elements, said battery comprising, for each module, a system for monitoring voltages.