Mine truck power battery heat preservation device and mine truck

Abstract

The utility model discloses a mining truck power battery heat preservation device and a mining truck. The mining truck power battery heat preservation device comprises a heat management system and a cooling liquid closed loop, the heat management system is provided with a reserved power supply interface connected with an external power supply, and is respectively connected with a PTC heater of a cooling liquid closed loop and a water pump through hard wires, so that the external power supply supplies power to the heat management system, and the water pump and the PTC heater are started to continuously heat the power battery; the thermal management system is further provided with a plurality of voltage converters and a thermal management system control module, and high voltage provided by the external power source is converted into low voltage through the voltage converters to supply power to the thermal management system control module. The thermal management system is provided with the external power supply interface to be connected with the mains supply or other external power supplies, so that the power battery can be heated without starting the whole vehicle, the working time of parts of the whole vehicle is reduced, the attenuation of the power battery is prevented, and the operation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of electric mining truck technology, specifically, to a power battery insulation device for mining trucks and a mining truck. Background Technology

[0002] As the mining truck market continues to expand, range-extended mining trucks, pure electric mining trucks, and unmanned mining trucks are constantly being introduced. However, problems with mining trucks during operation are also being exposed. In particular, when range-extended mining trucks are parked for a long time in winter and then restarted, the overall power performance of the vehicle decreases due to the lower ambient temperature. Furthermore, the power battery consumes a lot of power after thermal management is activated, which affects operating costs.

[0003] Most existing electric mining trucks use a fully electric system, with the power battery as the power source to power the thermal management system, which in turn heats the power battery. Alternatively, the power battery can be kept warm by plugging in a charging gun, or a heated room can be built to keep the entire vehicle warm. The first two methods require the entire vehicle to be powered, while the third method requires the construction of a factory, which is extremely costly and unsuitable for the operating environment of mining trucks.

[0004] Therefore, there is an urgent need for a device that can adapt to the environment, save resources, and heat the power battery without requiring the entire vehicle to be powered. Utility Model Content

[0005] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a power battery insulation device for mining vehicles and a mining vehicle.

[0006] The present invention solves the above problems through the following technical solution:

[0007] A power battery insulation device for mining vehicles includes: a thermal management system and a closed-loop coolant circuit formed by sequentially connecting a water pump, a PTC heater, and a power battery; the thermal management system is provided with a reserved power interface for connecting to an external power source, and is connected to the PTC heater and water pump of the closed-loop coolant circuit via hard wires, so that the external power source supplies power to the thermal management system and starts the water pump and PTC heater to continuously heat the power battery; the thermal management system is also provided with several voltage converters and a thermal management system control module, so that the high voltage provided by the external power source is converted into low voltage through the voltage converters to supply power to the thermal management system control module.

[0008] As a further improvement, the thermal management system is also connected to an inlet water temperature sensor and an outlet water temperature sensor via a low-voltage connection to collect the inlet and outlet temperatures of the water pump or power battery.

[0009] As a further improvement, the voltage converter includes an AC / DC converter and a DC-DC converter, with a DC power supply provided between the AC / DC converter and the DC-DC converter. An external power supply, a reserved power interface, the AC / DC converter, the DC power supply, and the PTC heater are connected in sequence at high voltage.

[0010] As a further improvement, the DC power supply is also connected to a high-voltage DC-DC converter with a thermal management system control module connected to a low-voltage connection.

[0011] As a further improvement, the external power source is household electricity.

[0012] As a further improvement, a battery liquid cooling plate is arranged outside the power battery to heat and keep the cells inside the power battery by circulating coolant through the battery liquid cooling plate.

[0013] In addition, the present invention also solves the above problems through the following technical solutions:

[0014] A mining vehicle is equipped with a power battery insulation device as described above, which heats and insulates the power battery through an external power source.

[0015] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0016] (1) The thermal management system of this utility model is equipped with an external power interface, which makes it convenient to connect to the mains power or other external power sources; the thermal management system can work as long as it is connected to the mains power, without the need to start the whole vehicle, reducing the risk of the whole vehicle, reducing the working time of the whole vehicle parts, and improving the service life of the whole vehicle.

[0017] (2) The thermal management system can detect the temperature of the water pump or the inlet and outlet of the power battery in real time, and control the operation and stop of the water pump, so that the battery is kept in a constant temperature environment to prevent the power battery from degrading; it can effectively keep the battery temperature in the optimal range for mining vehicles in low temperature environments, prevent the power battery from degrading, and improve operating efficiency. Attached Figure Description

[0018] Figure 1 This is a block diagram of a power battery insulation device for mining vehicles according to the present invention;

[0019] Figure 2 This is a line drawing of the thermal management system of this utility model.

[0020] Reference numerals: 1. External power supply; 2. Thermal management system; 21. Reserved power interface; 22. AC / DC converter; 23. DC power supply; 24. DC-DC converter; 25. Thermal management system control module; 26. Inlet water temperature sensor; 27. Outlet water temperature sensor; 3. PTC heater; 4. Water pump; 5. Power battery. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example

[0023] Combined with appendix Figure 1 As shown, a power battery insulation device for a mining vehicle includes: a thermal management system 2, a PTC heater 3, a water pump 4, and a power battery 5. The thermal management system 2 is provided with a reserved power interface for connecting to an external power source 1. The thermal management system 2 is connected to the PTC heater 3 via a hard wire, and the PTC heater 3 is used to heat the water in the water pipe. The thermal management system 2 is also connected to the water pump 4 via a hard wire. The water pump, PTC heater 3, and power battery 5 are connected in sequence through water pipes to form a closed loop for coolant. The external power source 1 supplies power to the thermal management system 2 and starts the water pump and PTC heater 3 to continuously heat the power battery 5.

[0024] Under normal circumstances, the thermal management system 2 operates on high-voltage power supplied by the vehicle to control the water pump and to heat the coolant in the water pipes using the PTC heater 3, thus preheating the power battery. When the vehicle is stationary in a low-temperature environment for an extended period, such as more than 4 hours, it can be connected to an external power source 1 via the reserved power interface of the thermal management system 2. In this case, the external power source 1 supplies power to the PTC heater 3 through the thermal management system 2, and simultaneously, the thermal management system 2 starts the water pump 4. The coolant heated by the PTC heater 3 continuously heats the power battery 5 through the water pump and water pipes. Since the PTC heater 3 is a constant-power heater, the power battery temperature remains stable. With the vehicle not operating (meaning the power battery is not discharging externally or self-heating), it is essentially stored in a constant-temperature environment. Upon the next start-up, the external power source 1 is disconnected. Starting the vehicle at this time ensures the power battery temperature remains at a good level, allowing the vehicle to operate normally and efficiently.

[0025] Furthermore, a reserved power interface is connected to external power supply 1 via a hardwire.

[0026] In an optional embodiment, the thermal management system 2 includes: a reserved power interface 21, an AC / DC converter 22, a DC power supply 23, a DC-DC converter 24, a thermal management system control module 25, an inlet water temperature sensor 26, and an outlet water temperature sensor 27; to convert external high voltage into low voltage to power the thermal management system control module; the external power supply, reserved power interface 21, AC / DC converter 22, DC power supply 23, and PTC heater are sequentially connected at high voltage; the DC power supply 23 is also connected at low voltage to the DC-DC converter 24 connected to the thermal management system control module 25. The thermal management system control module 25 is connected to the inlet water temperature sensor 26 and the outlet water temperature sensor 27 via a low-voltage connection. When preheating the power battery via an external power supply, a reserved power interface 21 is connected to an external power supply. At this time, the power supply can be 220V or 380V AC mains power. The DC-DC converter 24 is used to convert 220V or 380V AC mains power or other external power supply to 600V. Therefore, the voltage of the DC power supply 23 is 600V. The DC-DC converter 24 is used to convert the voltage of the DC power supply 23 to 24V so that it can be connected to the thermal management system control module 25 via a low-voltage connection.

[0027] Furthermore, a battery liquid cooling plate is arranged outside the power battery to circulate coolant for heating and heat preservation of the battery cells inside the power battery.

[0028] In this embodiment, the external power supply is household electricity, which can be 600V DC converted from 220V or 380V AC power, or it can be a 660V DC high voltage power supply.

[0029] The thermal management system 2 is equipped with several voltage converters, namely DC-DC converter 24 and AC / DC converter 22, to convert the high voltage supplied by the external power supply 1 into low voltage to power the thermal management system control module 25.

[0030] The thermal management system mainly integrates sampling of inlet and outlet water temperatures, which can be achieved by setting the inlet water temperature sensor 26 and the outlet water temperature sensor 27 at the inlet and outlet of the water pump or the inlet and outlet of the power battery, respectively; to start the water pump, it integrates a high-voltage to low-voltage DC-DC converter, monitors the inlet and outlet water temperatures in real time, and controls the operation and stop of the water pump.

[0031] A water pump operates to circulate coolant through the battery liquid cooling plate, thereby keeping the power battery warm. Preferably, the battery liquid cooling plate is arranged at the bottom and around the power battery. As the coolant circulates, it can heat and keep the cells inside the power battery warm, thus maintaining a constant power battery temperature.

[0032] In one possible embodiment, a mining vehicle is equipped with the aforementioned power battery insulation device to keep the power battery warm through an external power source, thereby avoiding power consumption of the power battery.

[0033] This utility model features a reserved power interface in its thermal management system, facilitating connection to mains power or other external power sources. This allows the thermal management system to operate simply by connecting to mains power or other external power sources, eliminating the need for vehicle startup, reducing overall vehicle risk, minimizing component downtime, and extending vehicle lifespan. Furthermore, the thermal management system can monitor the water pump or battery inlet and outlet temperatures in real time. Preferably, the inlet and outlet water temperature sensors are located at the water pump inlet and outlet, respectively. The thermal management system controls the pump's operation and shutdown, ensuring the battery operates at a constant temperature and preventing battery degradation. This effectively maintains the battery temperature within the optimal range for mining vehicles operating in low-temperature environments, preventing battery degradation and improving operational efficiency.

[0034] Although the present invention has been described herein with reference to illustrative embodiments, the above embodiments are merely preferred embodiments of the present invention, and the implementation of the present invention is not limited to the above embodiments. It should be understood that those skilled in the art can design many other modifications and implementations, which will fall within the scope and spirit of the principles disclosed in this application.

Claims

1. A mine car power battery heat preservation device, characterized in that, The application relates to a heat management system and a cooling liquid closed loop formed by sequentially connecting a water pump, a PTC heater and a power battery; the heat management system is provided with a reserved power supply interface connected with an external power supply, and is connected with the PTC heater and the water pump of the cooling liquid closed loop through hard wires respectively, so that the external power supply supplies power for the heat management system, and the water pump and the PTC heater are started to continuously heat the power battery; the heat management system is further provided with a plurality of voltage converters and a heat management system control module, so that the high voltage provided by the external power supply is converted into low voltage by the voltage converters to supply power for the heat management system control module. The heat management system is further connected with a water inlet temperature sensor and a water outlet temperature sensor through low voltage, and is used for collecting the inlet and outlet water temperature of the water pump or the power battery.

2. The mine car power battery heat preservation device according to claim 1, characterized in that, The voltage converter comprises an AC / DC converter and a DC-DC converter, and a direct current power supply is arranged between the AC / DC converter and the DC-DC converter; the external power supply, the reserved power supply interface, the AC / DC converter, the direct current power supply and the PTC heater are sequentially connected in high voltage.

3. The mine car power battery heat preservation device according to claim 1, characterized in that, The direct current power supply is further connected with the DC-DC converter of the heat management system control module in high voltage.

4. The mine car power battery heat preservation device according to claim 3, characterized in that, The external power supply is a domestic power supply.

5. The mine car power battery heat preservation device according to claim 1, characterized in that, The power battery is externally arranged with a battery liquid cooling plate, so that the battery liquid cooling plate circulates cooling liquid to heat and keep warm the battery cells in the power battery.

6. The mine car power battery heat preservation device according to any one of claims 1-5, characterized in that, The application is used for setting the power battery heat preservation device of the mine truck, so that the external power supply is used for heating and keeping warm the power battery.

7. A mine truck, characterized in that ​

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