927 results about "Battery thermal management" patented technology

A HVAC and battery thermal management system for a vehicle having a HVAC portion and a battery portion, and a method of operation, is disclosed. The HVAC portion may include a main chamber, an evaporator located in the main chamber, a heater extending across a portion of the main chamber downstream of the evaporator, a battery duct extending from the main chamber adjacent to the heater and in fluid communication with the main chamber both upstream and downstream of the heater. The battery portion may include a battery pack in fluid communication with the battery duct, a battery cooling valve located in the battery duct and configured to selectively allow fluid flow from the main chamber between the evaporator and the heater, and a battery heating valve located in the battery duct and configured to selectively allow fluid flow from the main chamber downstream of the heater.

The invention provides a vehicle battery thermal management system, and belongs to the technical field of automobile batteries. The vehicle battery thermal management system solves the problem that battery thermal management in the prior art is not accurate and timely and comprises a first liquid circulation loop, wherein the first liquid circulation loop consists of a battery pack, a water tank, a water pump and a radiator; a cooling structure and a heater are sequentially connected between the water pump and the battery pack to form a second liquid circulation loop; solenoid valves which only control respective liquid circulation loop are arranged on the first liquid circulation loop and the second liquid circulation loop; a temperature sensor is arranged on the battery pack; a battery management unit, the temperature sensor, the water pump, a first solenoid valve, a second solenoid valve, the cooling structure and the heater are connected with a complete vehicle controller; and the complete vehicle controller can receive a detection signal of the temperature sensor, process the detection signal, and send a control signal to control the operation of the water pump, the two solenoid valves, the cooling structure, the heater and the battery management unit. The system can accurately and timely judge a battery thermal environment and perform effective adjustment.

An HVAC system for a vehicle having a battery pack, and a method of operation, is disclosed. The HVAC system may comprise a refrigerant loop having a first leg and a second leg, and a refrigerant compressor in the refrigerant loop. In the first leg, an evaporator provides cooling to a passenger cabin of the vehicle, an evaporator shut-off valve selectively blocks the flow of refrigerant through the evaporator, and an evaporator thermal expansion valve is upstream from the evaporator. In the second leg, a battery heat exchanger receives the refrigerant, a battery thermal expansion valve is located upstream from the battery heat exchanger, and a battery cooling shut-off valve selectively blocks the flow of refrigerant through the battery heat exchanger. The shut-off valves and compressor are controlled to control the cooling of the passenger cabin and the battery pack.

The invention relates to a thermal management system of a power battery, and belongs to a component of a battery management system. The thermal management system of the power battery mainly consists of a battery box, a heat pipe, a liquid flow pipe, a liquid box, a semiconductor heating/refrigerating element, a liquid circulating pump, a battery control unit, a temperature sensor, a radiator and a fan. The radiator and the fan are installed outside the battery box, the battery box, the heat pipe, the liquid flow pipe, the liquid box, the semiconductor heating/refrigerating element, the liquid circulating pump, the battery control unit and the temperature sensor are installed in the battery box and organically combined with a battery module. The heat pipe is inserted into the battery module. The heat pipe is compactly attached to the battery module and the liquid flow plate above the battery module. The liquid flow plate is internally provided with a liquid circulating pipeline connected with the liquid circulating pump which is further connected with the liquid box filled with a circulating liquid. The semiconductor heating/refrigerating element is contacted with the liquid box and attached to the radiator. The battery box is further provided with the temperature sensor connected with battery control unit which controls the liquid circulating pump, the semiconductor heating/refrigerating element and the fan to work. The thermal management system of the power battery provided by the utility model is reasonable in structure and can quickly heat and cool.

A heat exchanger for thermal management of battery units made-up of plurality of battery cells or battery cell containers housing one or more battery cells is disclosed. The heat exchanger has a main body portion defining at least one primary heat transfer surface for surface-to-surface contact with a corresponding surface of at least one of the battery cells or containers. A plurality of alternating first and second fluid flow passages are formed within the main body portion each defining a flow direction, the flow direction through the first fluid flow passages being generally opposite to the flow direction through the second fluid flow passages providing a counter-flow heat exchanger. In some embodiments the heat exchanger has a two pairs of inlet and outlet manifolds, the heat exchanger providing a single-pass, counter-flow arrangement. In other embodiments the first and second fluid flow passages are interconnected by turn portions forming a U-flow, counter-flow heat exchanger.

In certain embodiments, a battery thermal management system includes at least one battery, at least one thermoelectric device in thermal communication with the at least one battery, and a conduit comprising an inlet configured to allow a working fluid to enter and flow into the conduit and into thermal communication with the at least one thermoelectric device. The conduit further comprises an outlet configured to allow the working fluid to exit and flow from the conduit and away from being in thermal communication with the at least one thermoelectric device. The battery thermal management system can further include a first flow control device which directs the working fluid through the inlet of the conduit and a second flow control device which directs the working fluid through the outlet of the conduit. The first flow control device and the second flow control device are each separately operable from one another.

The invention discloses a vehicle-mounted lithium battery charging system, which comprises a battery management system and a charger, wherein the battery management system comprises a battery management module, a battery thermal management module, a high-voltage safety management module and a CAN bus communication interface, and is used for monitoring and controlling the charging and discharging processes of each battery module in a battery pack; and the charger comprises a charging port, an auxiliary power port and a power output port, is used for monitoring and controlling the charging current and the charging voltage of the battery pack. Therefore, each battery module in the battery pack and a battery monomer are charged according to an ideal charging curve. The vehicle-mounted lithium battery charging system reduces the cost, realizes the balanced and safe charge of the battery pack, and can prolong the service life of the battery.

The invention discloses a whole automobile heat management system for a hybrid power automobile. The whole automobile heat management system comprises a heat pump circulation loop, an engine heat management loop, a passenger cabin heat management loop, a motor heat management loop and a battery heat management loop, wherein the heat pump circulation loop comprises a compressor, a first heat exchanger, a heat exchanger, an evaporator and a second heat exchanger; the battery cooler is connected in parallel with the evaporator and is then connected with the second heat exchanger; the engine heat management loop comprises an engine, a first heat radiator and a first water pump; the motor heat management loop comprises a motor, a third water pump and a second heat radiator; the passenger cabin heat management loop comprises a hot air core body, a second water pump and a first heat exchanger; the battery heat management loop comprises a battery pack, a fourth water pump and a battery cooler. The system realizes the whole automobile heat management and reasonable distribution and utilization of the hybrid power automobile.

The invention discloses an automobile battery thermal management system, which comprises a battery pack consisting of battery units, and cooling fluid is filled among the battery units; an inlet and an outlet of the cooling fluid are connected to two pipelines respectively so as to form a big cycle and a small cycle; the big cycle is connected with a main heat exchanger, the small cycle is connected with a refrigeration unit, a position in which the big cycle pipeline is connected with the small cycle pipeline is provided with a valve, and the big cycle pipeline and the small cycle pipeline are provided with a pump for driving the cooling fluid to flow; in addition, the system also comprises a control unit for acquiring signals of a temperature sensor in the battery pack and controlling other components. The invention also discloses a method for the automobile battery thermal management system, which can ensure that the temperature of the cooling fluid in the battery pack is constant within a proper range. The system and the method can make a battery in a proper temperature environment so as to prolong the service life of a battery system, ensure the safety of the battery system and reduce the using cost of the battery system.

The invention provides a thermal management method, system and device of a battery. The method comprises the steps of: collecting the temperature of each single battery in a battery pack and calculating the temperature rising rate of the each single battery, the average temperature of the battery pack and the temperature rising rate of the battery pack; and when any one of the temperature of eachsingle battery, the temperature rising rate of the each single battery, the average temperature of the battery pack and the temperature rising rate of the battery pack is higher than the corresponding heat dissipation threshold value, carrying out heat dissipation on the battery pack. In the invention, the temperature value and the temperature rising rate of the single battery as well as the average temperature value and the temperature rising rate of the battery pack are used as references and the heat quantity of the battery pack under a working state is controlled to ensure that the thermal management can be controlled more accurately and the potential safety hazard can be eliminated.

The invention discloses a power accumulator heat management system and a vehicle therewith. The power accumulator heat management system comprises a first heat radiator and a second heat radiator, wherein the first heat radiator absorbs heat generated by a power accumulator and emits the heat to environmental air, and the second heat radiator absorbs the heat generated by the power accumulator and can radiate the heat in a heat exchange mode through a refrigerant flowing by the second radiator. The power accumulator heat management system provided by the invention can match a suitable cooling system for the power accumulator, not only ensures the suitable cooling of the power accumulator, but also ensures the energy-saving effect of a vehicle using the power accumulator heat management system so that the vehicle can run in the most reliable and energy-saving state.

The invention discloses a battery thermal management control method, which comprises the steps of: using a water pump to drive cooling liquid to realize heat exchange between the cooling liquid and a battery module so as to cool the battery module; acquiring the temperature of the cooling liquid; under the situation that the water pump is shut down, when the temperature of the cooling liquid reaches startup temperature, starting up the water pump; and under the situation that the water pump is started up, when the temperature of the cooling liquid reaches shutdown temperature, shutting down the water pump, wherein the startup temperature is higher than the shutdown temperature. Therefore, the situation that the water pump is apt to be damaged because the water pump is frequently started up is avoided. Moreover, energy wastage can be avoided by avoiding the frequent startup of the water pump.

The invention discloses an integrated passenger compartment heat pump air conditioner for a pure electric vehicle and a tri-electric heat management system. The integrated passenger compartment heat pump air conditioner comprises a three-heat-exchanger heat pump air conditioning system, a battery heat management system and a motor electric-control heat management system, wherein a heat pump air conditioning system of a passenger compartment is a novel three-heat-exchanger heat pump air conditioning system; the battery heat management system and the heat pump air conditioning system exchange heat to define a secondary loop; the battery heat management system is regulated by an electronic expansion valve, and different temperature-control needs are realized through an electronic water pump,so that different mode functions are realized through switching of a three-way valve. A heat management function of the tri-electric heat management system is controlled by two three-way valves, fivesolenoid valves and one one-way valve. During electric-motor heat dissipation, the motor independently dissipates heat through a low-temperature water tank, and also can be connected with a battery inseries and then can co-dissipate heat through the low-temperature tank. The whole vehicle heat management system of the electric vehicle integrates functions of passenger compartment heat management,battery heat management and motor electric-control heat management, and can realize heat management needs of full-range working conditions.

The invention discloses a finite element method-based storage battery thermal management analysis and optimization method. The finite element method-based storage battery thermal management analysis and optimization method comprises the following steps of: acquiring parameters of a plurality of batteries and a battery pack respectively and establishing three-dimensional models of the plurality of batteries and the battery pack; performing the meshing of a definite element on the three-dimensional models of the plurality of batteries and then performing thermal field analysis after the meshing to acquire temperature field analytical results of the plurality of batteries; performing fluid mechanics meshing on the three-dimensional models of fluid in the battery pack and then after the meshing, using temperature field analytical results of the plurality of batteries as constraint conditions of the plurality of batteries in the fluid grid models in the battery pack; performing fluid mechanics calculation on the constrained grid models to acquire flow field analytical results of the storage batteries; judging whether the flow field analytical results accord with preset conditions or not; and if the flow field analytical results do not accord with the preset conditions, optimizing the design scheme of the battery pack and establishing the models again. The finite element method-based storage battery thermal management analysis and optimization method is not limited to mathematic analysis capacity, has higher adaptability and solving capacity, does not need entity models, is economic and quick in the analytical process, and has higher degree of freedom and flexibility.

The invention discloses a thermal management system for a fuel cell of a commercial vehicle. The thermal management system comprises a controller, a hydrogen fuel cell system, an electric control three-way valve, an electric heater, a radiator, a variable frequency fan, a make-up water tank, a variable frequency water pump, a deionizer, a throttle valve, a particulate matter filter, a temperaturesensor I and a temperature sensor II. Due to the cell thermal management system, a coolant of the thermal management system flows through small circulation and is rapidly warmed when the vehicle is started at the low temperature, the temperature of the coolant is guaranteed to reach the optimal temperature range for the reaction of the hydrogen fuel cell within a short period of time, the reactionefficiency of the hydrogen fuel cell is improved, the small circulation of the coolant is gradually switched to large circulation through the electric control three-way valve after the temperature ofthe coolant reaches the set optimal reaction temperature range, a better cooling effect is achieved, the hydrogen fuel cell is within the optimal reaction temperature range, and the reaction efficiency is improved. The rapid warming of the thermal management system in the cold start also reduces the damage on the cell, and the service life of the cell is prolonged.

A thermal management system heat management method and automobile, wherein the thermal management system comprises a motor cooling system and a battery thermal management system, Also includes three-way valve, Branch circuits and heat exchangers, The three-way valve is connected to a first coolant loop between the drive motor of the motor cooling system and the radiator, one end of the branch loopis connected to an outlet of the three-way valve, the branch loop is connected in parallel with the first coolant loop, and the branch loop and the second coolant loop of the battery thermal management system are connected in parallel with heat exchange through a heat exchanger. When the battery thermal management system heats the battery at a low temperature, the heat absorbed by the motor cooling system drives the motor to assist in heating the battery in the battery thermal management system, thereby reducing the battery heating power consumption in the battery thermal management system.

The invention discloses a cooling device for a battery pack. The cooling device for the battery pack comprises a vehicle-mounted air conditioner. The vehicle-mounted air conditioner comprises an air conditioner controller which is respectively connected with an air conditioner panel, a compressor, a condensing fan and an air blower. The air blower comprises an air blower motor and an air door adjusting motor; an air blowing opening of the air door adjusting motor is respectively communicated with the battery pack and an in-vehicle space; a battery box and a temperature sensor are arranged inside the battery pack, and the temperature sensor is electrically connected with a battery heat management system of the battery box; and the battery heat management system is electrically connected with the air conditioner controller. The cooling device provided by the invention has the beneficial effects that by using the vehicle-mounted air conditioner and allocating a working state. different refrigeration methods are used according to different temperature levels in the battery pack and the cooling device is not influenced by ambient temperature in use, so that the temperature of the power battery pack is effectively reduced, the unnecessary energy consumption of a battery is avoided, the maximum utilization ratio of electric energy is reached, and the driving range of an electro-mobile is increased.

The invention relates to a thermal management technology for power batteries, and belongs to the field of power batteries. A thermal management method for a battery pack is characterized in that a heat-conducting sleeve coating one battery is arranged outside one battery cell of the battery pack; each heat-conducting sleeve is connected with a heat-conducting pipe with a heat transfer function; and heat exchange is achieved for the batteries of the battery pack through heat transmission of the heat-conducting pipe. A device for thermal management employing the thermal management method for the battery pack is characterized by comprising the heat-conducting pipes and the heat-conducting sleeves, wherein each heat-conducting sleeve is fixedly connected with the corresponding heat-conducting pipe; each heat-conducting sleeve coats the outside of each battery cell of the battery pack; the internal sizes of the heat-conducting sleeves are matched with the external sizes of the batteries; the outer side of each heat-conducting sleeve is fixedly connected to the corresponding heat-conducting pipe; the heat-conducting pipes transmit the heat generated by the batteries through heat transmission; and heat exchange is achieved for the batteries of the battery pack. According to the thermal management method and device, the temperature adjusting effect is improved; the mechanical properties of the batteries and the thermal management device are strengthened; and the device is portable and easy to assemble.

The invention discloses an air cooled electric automobile battery thermal-management device containing a phase change material. The device comprises an interlayer sleeved on the outer wall of a battery, wherein an inner casing of the interlayer is fit with the outer wall of the battery; a porous medium is filled between the inner casing and an outer casing of the interlayer; the phase change material is filled in holes of the porous medium; radiating fins are arranged on the outer casing of the interlayer. Heat emitted from the battery is transmitted to the inner casing of the interlayer through heat conduction, transmitted to the outer casing of the interlayer through a porous medium frame and finally emitted out through the radiating fins in an air cooled way, and the phase change material filled in the holes of the porous medium can ensure that the temperature of the battery is kept within a constant optimal operation temperature range. The device has a simple structure, is easy to manufacture and convenient to popularize and apply, and simultaneously, can ensure that the temperature in the battery is uniformly distributed and that the temperature of the battery is kept within an optimal operation temperature range.