Combustion type rapid preheating device of vehicle-mounted power battery

Abstract

The utility model discloses a combustion type rapid preheating device of a vehicle-mounted power battery, which comprises a water tank, a water pump, a thermal cycle controller ECU (electronic control unit), a water temperature sensor and a combustion chamber provided with an ignition device which are arranged in a preheating main body, and an outlet of the water pump, an outlet of the water tank and an inlet of the combustion chamber are connected through a first three-way joint. An inlet of the water pump is connected with a water inlet of the preheating main body so as to be respectively connected with an anti-freezing solution inlet and an anti-freezing solution outlet of the power battery; and the water pump and the combustion chamber work through the thermal cycle controller ECU, and the anti-freezing solution flowing through the combustion chamber is heated, so that the power battery is preheated through the heated anti-freezing solution. According to the utility model, a heating cycle is formed with the power battery of the battery heat management system, so that the energy consumption of the power battery in the heating process is avoided, and higher heating cycle power is provided, so that the temperature of the power battery is quickly increased to a proper temperature, the heating time of the power battery is shortened, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to new energy automobile technical field, specifically speaking, it is a kind of vehicle-mounted power battery's combustion formula quick preheating device. BACKGROUND

[0002] Power battery as the core component of new energy automobile, ensure its work at optimum working temperature for the performance of battery, life and safety are very important. However, due to the low temperature effect of power battery, the available energy and power attenuation of power battery under low temperature environment is serious, because in low temperature environment, the charge transport rate of power battery can reduce, and the chemical reaction in battery can also slow down, cause battery energy and power output to drop. Especially long-term use in low temperature environment can accelerate the aging of power battery, affect the charge-discharge safety of battery, reduce its overall performance, shorten service life, and further affect the reliability and usability of new energy automobile.

[0003] Pure electric vehicle stops after driving in severe winter, and the temperature of power battery cell will drop to the outside extremely cold temperature, when the vehicle starts again, the battery thermal management system BMS of whole vehicle needs to heat power battery cell, and the temperature of power battery is raised to the optimum working temperature of battery. However, the energy of power battery is consumed when the battery thermal management system BMS works, and power battery slowly discharges, so that PTC heater works, and the antifreeze circulating through power battery is heated, and then power battery is heated, and the process needs to consume the power of whole vehicle, and because power battery cannot release large working current when starting cold, the heating process is slow. UTILITARIAN CONTENT

[0004] In order to solve the above technical problems, the purpose of the utility model is to provide a kind of vehicle-mounted power battery's combustion formula quick preheating device, by battery thermal management system external combustion formula quick preheating device, with battery thermal management system forms heating cycle, avoids the consumption of power battery energy, and the combustion formula quick preheating device of external connection has greater heating cycle power, can quickly raise the temperature of power battery to suitable temperature.

[0005] The utility model solves the above problems by the following technical solutions:

[0006] A kind of vehicle-mounted power battery's combustion formula quick preheating device is connected with the import and export of power battery antifreeze of battery thermal management system, and includes:

[0007] The preheating body is internally provided with a water tank, a water pump, a heat cycle controller ECU, a water temperature sensor, and a combustion chamber provided with an ignition device; the water pump outlet, the water tank outlet and the combustion chamber inlet are connected through a first three-way joint; the combustion chamber outlet is connected with the water outlet of the preheating body; and the water pump inlet is connected with the water inlet of the preheating body, so as to be respectively connected with the power battery anti-freezing liquid inlet and outlet through the water outlet and the water inlet of the preheating body.

[0008] The heat cycle controller ECU is connected with the water temperature sensor, the water pump and the ignition device; the water temperature sensor is arranged at the water pump outlet position and used for detecting the temperature of the anti-freezing liquid in the pipeline; the water pump and the combustion chamber are controlled by the heat cycle controller ECU to heat the anti-freezing liquid flowing through the combustion chamber, so as to preheat the power battery through the heated anti-freezing liquid.

[0009] As a further improvement, the preheating body is further internally provided with a battery power supply; the preheating body is provided with an external power supply interface; and the battery power supply and the external power supply interface are connected with the heat cycle controller ECU, so as to charge the battery power supply through the connection with the commercial power through the external power supply interface.

[0010] As a further improvement, the water tank is provided with an anti-freezing liquid filling port extending out of the preheating body, so as to conveniently fill the anti-freezing liquid into the water tank through the anti-freezing liquid filling port.

[0011] As a further improvement, the heat cycle controller ECU is connected with an audible and visual alarm unit to send an alarm signal through the audible and visual alarm unit.

[0012] As a further improvement, the heat cycle controller ECU is further connected with an information interaction interface arranged outside the preheating body and used for information interaction with external equipment.

[0013] As a further improvement, the combustion chamber outlet is connected with the water outlet of the preheating body through a second three-way joint; the water pump inlet is connected with the water inlet of the preheating body through a third three-way joint; and a normally closed electromagnetic valve is arranged on a hydraulic control line between the combustion chamber outlet and the water pump inlet, so as to form a bypass circuit between the water inlet and the water outlet of the preheating body through the second three-way joint and the third three-way joint.

[0014] As a further improvement, the preheating body is provided with a wheel at the bottom, so as to be convenient to move.

[0015] As a further improvement, the combustion chamber is provided with a heating pipe connected with the combustion chamber inlet and the combustion chamber outlet, and the anti-freezing liquid flows into and out of the combustion chamber through the heating pipe.

[0016] As a further improvement thereof, the combustion chamber is externally connected with an air inlet pipe and an air outlet pipe, the air inlet pipe and the air outlet pipe are arranged to extend out of the preheating body, and the air outlet pipe and the air inlet pipe are cyclic interfaces for energy exchange with external equipment.

[0017] As a further improvement thereof, the combustion chamber is externally connected with a fuel storage tank, the fuel storage tank stores fuel, and provides a heating energy source for the combustion chamber.

[0018] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0019] The utility model discloses a heating cycle is formed with the battery thermal management system by the combustion type quick preheating device, avoid the consumption of power battery energy, and the combustion type quick preheating device has greater heating cycle power simultaneously, can quickly promote power battery temperature to suitable temperature, shorten power battery heating time, improve production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the structural diagram of a battery thermal management system of the utility model;

[0021] Figure 2 It is the structural diagram of a battery thermal management system of the utility model;

[0022] Reference Signs: 1, water tank;2, water temperature sensor;3, water pump;4, heat cycle controller ECU;5, audible and visual alarm unit;6, battery power supply;7, external power supply interface;8, information interaction interface;9, water inlet of preheating body;10, electromagnetic valve;11, water outlet of preheating body;12, heating pipe;13, combustion chamber;14, ignition device;15, fuel storage tank;16, wheel;17, air inlet pipe;18, air outlet pipe;19, antifreeze filling port. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] EMBODIMENT

[0025] Refer to the drawings Figure 1The utility model provides a kind of battery thermal management system, mainly by battery thermal manager BMS, BMS water pump, PTC heater, first expansion water tank, power battery, high voltage wiring harness, low voltage wiring harness, controller, water temperature sensor and pressure sensor etc.

[0026] Battery thermal manager BMS obtains the battery temperature of power battery in real time, when battery temperature is lower, battery thermal manager BMS controls PTC heater to work, simultaneously controls BMS water pump to work, antifreeze in pipeline is heated by PTC heater by BMS water pump, flows through power battery, returns BMS water pump again, power battery energy is consumed in this circulation process;PTC heater heating power is limited, heating speed is slow, and power battery temperature rises slowly.

[0027] Thus, with reference to the accompanying drawings Figure 2 The utility model provides a kind of burning type quick preheating device of vehicle-mounted power battery, and the import and export of power battery antifreeze of battery thermal management system are connected respectively, provide the antifreeze after heating for the power battery of battery thermal management system, and PTC heater does not need to consume power battery electric quantity to heat the antifreeze provided by BMS water pump.

[0028] The burning type quick preheating device includes:

[0029] Preheating main part is provided with water tank 1, water pump 3, heat cycle controller ECU 4, water temperature sensor 2 in preheating main part and is provided with ignition device 14 combustion chamber 13, water pump export, water tank export and combustion chamber entrance are connected by first three-way joint, and combustion chamber export is connected with the water outlet 11 of preheating main part;Water pump inlet is connected with the water inlet 9 of preheating main part, to connect with the import and export of power battery antifreeze by the water outlet and water inlet of preheating main part respectively;

[0030] Heat cycle controller ECU is connected with water temperature sensor 2, water pump 3 and ignition device 14 respectively, and water temperature sensor is set to water pump export position, for detecting the temperature of antifreeze in pipeline;Water pump, combustion chamber are worked by heat cycle controller ECU 4, and antifreeze flowing in combustion chamber is heated, so as to preheat power battery by heated antifreeze.

[0031] In a specific embodiment, the preheating body is provided with a water tank 1, a water pump 3, a heat cycle controller ECU 4, a battery power supply 6, a water temperature sensor 2, an audible and light alarm unit 5, a combustion chamber 13, an electromagnetic valve 10 and other components, wherein the water tank is provided with an anti-freezing liquid filling port 19 extending out of the preheating body, the anti-freezing liquid filling port 19 facilitates the filling of the water tank with anti-freezing liquid, and the water tank provides the device with circulating liquid.

[0032] The liquid control line between the water pump outlet, the water tank outlet and the combustion chamber inlet is connected through a first three-way joint, the combustion chamber outlet is connected with a water outlet extending out of the preheating body through a second three-way joint, and the water pump inlet is connected with a water inlet extending out of the preheating body through a third three-way joint; preferably, the second three-way joint and the third three-way joint are connected through a liquid control line, and an electromagnetic valve is arranged on the liquid control line connecting the second three-way joint and the third three-way joint, so as to form a bypass circuit between the water inlet and the water outlet through the second three-way joint and the third three-way joint, and the electromagnetic valve is a normally closed electromagnetic valve, and the bypass circuit is turned on when the electromagnetic valve is powered on.

[0033] The heat cycle controller ECU is connected with the battery power supply, the water temperature sensor, the audible and light alarm unit, the water pump, the ignition device 14, the electromagnetic valve and the external power supply interface 7 arranged on the preheating body through electric control lines; the external power supply interface 7 is an interface connected with the mains, and the heat cycle controller ECU controls the internal circuit and charges the battery power supply.

[0034] As a preferred, the heat cycle controller ECU is further connected with an information interaction interface 8 arranged outside the preheating body through an electric control line. The information interaction interface 8 is a connection interface for information interaction with external devices, and is usually in the form of a CAN line or the like.

[0035] Further, the combustion chamber is provided with a heating pipe 12, the heating pipe 12 connects the combustion chamber inlet and the combustion chamber outlet, the anti-freezing liquid flows into and out of the combustion chamber through the heating pipe, so as to heat the anti-freezing liquid flowing through the combustion chamber; the combustion chamber is externally connected with an air inlet pipe 17, an air outlet pipe 18 and an ignition device 14, the air outlet pipe 18 and the air inlet pipe 17 are circulating interfaces for energy exchange with external devices; the ignition device 14 is connected with the heat cycle controller ECU 4 through an electric control line, so as to control the ignition device to ignite and heat the combustion chamber through the heat cycle controller ECU; and is connected with a fuel storage tank 15, the fuel storage tank 15 stores fuel, usually liquefied petroleum gas, and provides the combustion chamber with heating energy;

[0036] In an optional embodiment, the preheating main body of the combustion type rapid preheating device is provided with wheels 16 to facilitate rapid movement of the combustion type rapid preheating device. To facilitate connection with external equipment, the information interaction interface, water inlet and water outlet are usually integrated as a structure for quick plug connection with external equipment.

[0037] (1) When preheating alone:

[0038] The heat cycle controller ECU controls the ignition device to ignite, fuel in the fuel storage tank is injected into the combustion chamber, the fuel in the combustion chamber is fully mixed with the air entering through the air inlet pipe and burns, the heat generated by the burning heats the liquid in the heating pipe, and the exhaust gas of the burning is discharged into the atmosphere through the exhaust pipe.

[0039] The heat cycle controller ECU synchronously controls the water pump to work, the antifreeze liquid flows along the water pump outlet, the first three-way joint, the heating pipe in the combustion chamber, the second three-way joint, the electromagnetic valve (at this time the heat cycle controller ECU controls the electromagnetic valve to be powered on), the third three-way joint, and the water pump inlet, forming an internal circulation.

[0040] When the antifreeze liquid circulates in the pipeline, the water temperature sensor connected in the pipeline transmits the temperature of the antifreeze liquid in the pipeline to the heat cycle controller ECU in real time. When the temperature of the antifreeze liquid in the pipeline reaches a predetermined value, the heating of the heating pipe in the combustion chamber is stopped, the water pump stops working, and at the same time the audible and visual alarm unit issues a continuous alarm signal.

[0041] (2) When charging:

[0042] The external power source interface connects the external power source, and the heat cycle controller ECU controls the charging of the battery power supply.

[0043] (3) When connecting an external power battery:

[0044] The information interaction interface, water inlet and water outlet are respectively connected with the corresponding interfaces of the external equipment.

[0045] For example, the water inlet is connected to the water outlet of the power battery, and the water outlet is connected to the water inlet of the BMS water pump or the water inlet of the power battery.

[0046] The heat cycle controller ECU controls the ignition device to ignite, fuel in the fuel storage tank is injected into the combustion chamber, the fuel in the combustion chamber is fully mixed with the air entering through the air inlet pipe and burns, the heat generated by the burning heats the liquid in the heating pipe, and the exhaust gas of the burning is discharged into the atmosphere through the exhaust pipe.

[0047] The heat cycle controller ECU synchronously controls the water pump to work, and the antifreeze circulates along the water pump outlet, the first three-way joint, the combustion pipe in the combustion chamber, the second three-way joint, the water outlet, the external device (power battery), the water inlet, the third three-way joint and the water pump inlet (water pump inlet), to form an external heating cycle.

[0048] When the external power battery has no information interaction with the device, the heat cycle controller ECU monitors the antifreeze temperature in real time when the external heating cycle is performed, so that the antifreeze temperature is stabilized at a preset position, and the device working time T is set; when the working time T reaches the preset time, the external heating cycle is stopped, and the sound and light alarm unit of the device sends a continuous alarm signal.

[0049] The utility model discloses a heating cycle is formed by the combustion type quick preheating device and battery thermal management system, avoids the consumption of power battery energy, and the combustion type quick preheating device has greater heating cycle power, can quickly improve power battery temperature to suitable temperature, shortens power battery heating time, improves production efficiency.

[0050] Although the utility model has been described with reference to the explanatory embodiments of the utility model herein, the above-mentioned embodiments are only the preferred implementation of the utility model, and the implementation of the utility model is not limited by the above-mentioned embodiments, and it should be understood that the person skilled in the art can design many other modifications and implementation, and these modifications and implementation will fall in the principle range and spirit disclosed by the application.

Claims

1. A quick preheating device for combustion of a vehicle-mounted power battery, which is connected with a power battery anti-freezing liquid inlet and outlet of a battery thermal management system, characterized in that, The application relates to a preheating body, a water tank, a water pump, a heat cycle controller ECU, a water temperature sensor and a combustion chamber provided with an ignition device are arranged in the preheating body, a water pump outlet, a water tank outlet and a combustion chamber inlet are connected through a first three-way joint, a combustion chamber outlet is connected with a water outlet of the preheating body, a water pump inlet is connected with a water inlet of the preheating body, and the water outlet and the water inlet of the preheating body are connected with power battery anti-freezing liquid inlets and outlets respectively. The heat cycle controller ECU is connected with the water temperature sensor, the water pump and the ignition device, the water temperature sensor is arranged at the water pump outlet position and is used for detecting the temperature of the anti-freezing liquid in the pipeline; the water pump and the combustion chamber are controlled by the heat cycle controller ECU, the anti-freezing liquid flowing through the combustion chamber is heated, and the power battery is preheated by the heated anti-freezing liquid. A battery power supply is arranged in the preheating body, an external power supply interface is arranged on the preheating body, and the battery power supply and the external power supply interface are connected with the heat cycle controller ECU so as to charge the battery power supply through the external power supply interface and municipal power.

2. The quick preheating device for combustion of the power battery on vehicle according to claim 1, characterized in that, An anti-freezing liquid filling port extending out of the preheating body is arranged above the water tank, and the anti-freezing liquid filling port is convenient for filling the water tank with anti-freezing liquid.

3. The quick preheating device for combustion of the power battery on vehicle according to claim 1, characterized in that, The heat cycle controller ECU is connected with an audible and visual alarm unit so as to send an alarm signal through the audible and visual alarm unit.

4. The quick preheating device for combustion of the power battery on vehicle according to claim 1, characterized in that, The heat cycle controller ECU is further connected with an information interaction interface arranged outside the preheating body and used for information interaction with external equipment.

5. The quick preheating device for combustion of the power battery on vehicle according to claim 1, characterized in that, The combustion chamber outlet is connected with the water outlet of the preheating body through a second three-way joint, the water pump inlet is connected with the water inlet of the preheating body through a third three-way joint, a normally closed electromagnetic valve is arranged on a hydraulic control line between the combustion chamber outlet and the water pump inlet, and a bypass loop is formed between the water inlet and the water outlet of the preheating body through the second three-way joint and the third three-way joint.

6. The quick preheating device for combustion of the power battery on vehicle according to claim 1, characterized in that, Wheels are arranged at the bottom of the preheating body and are convenient for moving.

7. The quick preheating device for combustion of the power battery on vehicle according to claim 1, characterized in that, A heating pipe is arranged in the combustion chamber, the heating pipe is connected with the combustion chamber inlet and the combustion chamber outlet, and the anti-freezing liquid flows into and out of the combustion chamber through the heating pipe.

8. The quick preheating device for combustion of the power battery in a vehicle according to any one of claims 1-7, characterized in that, An air inlet pipe and an air outlet pipe are connected with the combustion chamber, the air inlet pipe and the air outlet pipe extend out of the preheating body and are arranged, and the air outlet pipe and the air inlet pipe are circulation interfaces for energy exchange with external equipment.

9. The quick preheating device for combustion of the power battery on vehicle according to claim 8, characterized in that, A fuel storage tank is further connected with the combustion chamber, fuel is stored in the fuel storage tank, and the fuel storage tank provides a heating energy source for the combustion chamber.

10. The quick preheating device for combustion of the power battery on vehicle according to claim 9, characterized in that, ​

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