CN221585060U - Thermal management control system for power battery of pure electric mine card - Google Patents
Thermal management control system for power battery of pure electric mine card Download PDFInfo
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- CN221585060U CN221585060U CN202323075984.3U CN202323075984U CN221585060U CN 221585060 U CN221585060 U CN 221585060U CN 202323075984 U CN202323075984 U CN 202323075984U CN 221585060 U CN221585060 U CN 221585060U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model provides a thermal management control system for a power battery of a pure electric mine truck, and relates to the technical field of electric mine cars. The system comprises: the electric compressor is characterized in that one end of the electric compressor is connected with a condenser, the other end of the condenser is connected with a first expansion valve, the other end of the first expansion valve is connected with a PTC heater through a heat exchanger, the other end of the PTC heater is connected with a water pump, the other end of the water pump is respectively connected with a water tank and a coolant machine, the coolant machine is connected with a second expansion valve through the heat exchanger, and the other end of the second expansion valve is connected with the electric compressor; the power battery is connected with the cooling liquid machine; by the system, the problems of service life and safety performance of the power battery are improved, the power battery works in the optimal temperature environment, and the safety performance and service life of the power battery achieve the optimal effect.
Description
Technical Field
The utility model relates to the technical field of electric mine cars, in particular to a heat management control system of a pure electric mine card power battery.
Background
The power battery generally provides an energy source for the pure electric mine card, heat can be continuously generated in the process of charging and discharging, and the power battery adopts a completely closed protection structure in order to achieve the protection level of IP67 or IP68, at the moment, the heat dissipation capacity of the battery is far smaller than the heat productivity of the battery only by virtue of natural cooling, and the charging and discharging service performance of the battery is greatly reduced as the working environment temperature of the battery is continuously increased, even the condition of thermal runaway of the battery occurs, the safety of a person is endangered, and the safety performance of the battery is rapidly reduced; for the northern extremely cold region, the temperature of the power battery is reduced to below-20 ℃ in cold weather, and the power battery cannot be normally used at the moment, so that the running of the whole vehicle is influenced, and the service life of the power battery is greatly shortened.
Disclosure of utility model
The utility model aims to provide a thermal management control system for a pure electric mine card power battery, solve the problems of service life and safety performance of the power battery, realize the working of the power battery in an optimal temperature environment and ensure that the safety performance and service life of the power battery achieve the optimal effect.
In order to achieve the above purpose, the technical scheme adopted by the embodiment of the utility model is as follows:
the embodiment of the utility model provides a thermal management control system of a pure electric mine card power battery, which comprises the following components: the electric compressor is characterized in that one end of the electric compressor is connected with a condenser, the other end of the condenser is connected with a first expansion valve, the other end of the first expansion valve is connected with a PTC heater through a heat exchanger, the other end of the PTC heater is connected with a water pump, the other end of the water pump is respectively connected with a water tank and a coolant machine, the coolant machine is connected with a second expansion valve through the heat exchanger, and the other end of the second expansion valve is connected with the electric compressor; and the power battery is connected with the cooling liquid machine.
Optionally, the power battery includes: the power battery is internally provided with a liquid cooling plate; the side wall of the power battery is provided with a water inlet and a water outlet.
Optionally, a cooling fan is further disposed on the condenser.
Optionally, the coolant machine is provided with a coolant inlet end and a coolant outlet end, the coolant inlet end is connected with the water pump, and the coolant outlet end is connected with the heat exchanger.
The beneficial effects of the utility model are as follows:
When the cooling system works, the electric compressor compresses the refrigerant into high-temperature liquid, the high-temperature liquid flows through the condenser to dissipate heat, the high-temperature liquid is converted into low-temperature low-pressure wet steam through the expansion valve, then the low-temperature low-pressure wet steam enters a refrigerant channel of the heat exchanger to absorb heat, so that the temperature of the heat exchanger is reduced, finally the low-temperature wet steam returns to the electric compressor to perform the next refrigeration cycle, meanwhile, the water pump pumps the cooling liquid to pass through a liquid channel of the heat exchanger, and the heat in the cooling liquid is absorbed by the heat exchanger in a low-temperature state, so that the effect of reducing the temperature of the cooling liquid is achieved; when the heating system works, the PTC heater is mainly used for heating the cooling liquid, and the water pump is used for circulating, so that the temperature of the power battery is increased; therefore, the power battery works in the optimal temperature environment, and the safety performance and the service life of the power battery achieve the optimal effect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a block diagram of a thermal management control system for a battery of a pure electric mining card according to an embodiment of the present utility model;
Fig. 2 is an external structure diagram of a power battery of a thermal management control system for a battery of a pure electric mining card according to an embodiment of the present utility model;
Fig. 3 is an internal structure diagram of a power battery of a thermal management control system for a battery of a pure electric mining card according to an embodiment of the present utility model;
Fig. 4 is a circuit diagram of a thermal management control system for a battery of a pure electric mining card according to an embodiment of the present utility model;
Icon: 1-an electric compressor; a 2-condenser; 3-a first expansion valve; 4-heat exchanger; a 5-PTC heater; 6-a water pump; 7-a water tank; 8-a cooling liquid machine; 9-a second expansion valve; 10-a power cell; 101-a liquid cooling plate; 102-a water inlet; 103-a water outlet; 21-a heat radiation fan; 81-a cooling liquid inlet end; 82-a coolant outlet port; 11-24V low-voltage storage battery; 12-battery management system BMS; 13-a vehicle control unit VCU; 14-a thermal management system DCDC controller; 15-CAN network.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Fig. 1 is a block diagram of a thermal management control system for a battery of a pure electric mining card according to an embodiment of the present utility model.
Referring to fig. 1, an embodiment of the present utility model provides a thermal management control system for a battery of a pure electric mining card, including: the electric compressor is characterized in that one end of the electric compressor is connected with a condenser, the other end of the condenser is connected with a first expansion valve, the other end of the first expansion valve is connected with a PTC heater through a heat exchanger, the other end of the PTC heater is connected with a water pump, the other end of the water pump is respectively connected with a water tank and a coolant machine, the coolant machine is connected with a second expansion valve through the heat exchanger, and the other end of the second expansion valve is connected with the electric compressor; and the power battery is connected with the cooling liquid machine.
In the application, the electric compressor compresses gas, and the pressure and the density of the gas are improved, namely, the refrigerant can be compressed into high-temperature liquid; the condenser is used for quickly condensing high-temperature refrigerant vapor into liquid and releasing heat to the outside; the expansion valve mainly plays roles of throttling, reducing pressure and regulating flow, and has the functions of preventing wet compression, protecting the compressor by liquid impact and abnormal overheating; heat exchangers transfer heat from one fluid to another, thereby effecting transfer and utilization of energy; the PTC heater is a heating device designed by utilizing the constant temperature heating characteristic of a constant temperature heating PTC thermistor; the cooling liquid in the cooling liquid machine is a liquid containing special additives and is mainly used for a water-cooled engine cooling system, and the cooling liquid takes away the heat of the engine by continuously circulating and flows, so that the temperature of the engine is kept within a specified range; the power battery is a power source for providing a power source for the electric vehicle.
The system is divided into two working modes of cooling and heating: when the cooling system works, the electric compressor compresses the refrigerant into high-temperature liquid, the high-temperature liquid passes through the condenser to dissipate heat, the low-temperature low-pressure wet steam is formed after passing through the expansion valve, then the wet steam enters the refrigerant channel of the heat exchanger to absorb heat, so that the temperature of the heat exchanger is reduced, finally the wet steam returns to the electric compressor to perform the next refrigeration cycle, meanwhile, the water pump pumps the cooling liquid to pass through the liquid channel of the heat exchanger, and the heat in the cooling liquid is absorbed by the heat exchanger in a low-temperature state, so that the effect of reducing the temperature of the cooling liquid is achieved; when the heating system works, the PTC heater is mainly used for heating the cooling liquid, and the water pump is used for circulating, so that the temperature of the power battery is increased.
The thermal management control system for the power battery of the pure electric mine card verifies after the pure electric mine card is installed, so that the vehicle is always in a high-efficiency working state and a maximum power charging state, the temperature of the power battery can be controlled within a range of 26-32 ℃, the optimal performance using temperature range of the power battery is met, particularly in a charging mode, the charging time is shortened, the using time of the vehicle is greatly prolonged, the power battery works in an optimal temperature environment, and the safety performance and the service life of the power battery reach optimal effects.
Fig. 2 is an external structure diagram of a power battery of a thermal management control system for a power battery of a pure electric mining card according to an embodiment of the present utility model, and fig. 3 is an internal structure diagram of a power battery of a thermal management control system for a power battery of a pure electric mining card according to an embodiment of the present utility model.
Referring to fig. 2 and 3, the power battery includes: the power battery is internally provided with a liquid cooling plate; the side wall of the power battery is provided with a water inlet and a water outlet.
The application relates to a liquid cooling plate which is a key technology used in a battery system of an electric car, and mainly aims to provide heat dissipation and temperature control for the battery system, the whole liquid cooling plate consists of a plurality of cooling plates, a pipeline with a certain distance is arranged between the cooling plates, fluid circulates in the pipeline, and the battery module is dissipated to a heat sink through the cooling plates, so that the battery is ensured to always keep lower temperature under all use conditions, and damage caused by overhigh temperature is prevented; the water inlet is used for controlling the internal temperature of the battery pack, so that the normal operation of the battery system is ensured, and the water inlet and the water outlet can be connected to a heat dissipation system or a temperature control system through a water pipe under normal conditions; the water outlet is used for cooling.
Further, a cooling fan is further arranged on the condenser.
In this embodiment, the heat dissipation fan is used for dissipating heat from the condenser.
Further, a cooling liquid inlet end and a cooling liquid outlet end are arranged on the cooling liquid machine, the cooling liquid inlet end is connected with the water pump, and the cooling liquid outlet end is connected with the heat exchanger.
Fig. 4 is a circuit diagram of a thermal management control system for a battery of a pure electric mining card according to an embodiment of the present utility model.
Referring to fig. 4, a circuit connection diagram of the electric only mining card power battery thermal management control system is as follows:
One end of a 24V low-voltage storage battery is connected with a DCDC controller, and the DCDC controller is connected with a power battery through an auxiliary relay KM 4; the other end of the 24V low-voltage storage battery is connected with a battery management system BMS, a vehicle control unit VCU and an electric compressor respectively; the electric compressor is connected with the whole vehicle controller and then is connected with a DCDC controller of the thermal management system through a CAN network, and the DCDC controller of the thermal management system is respectively connected with a cooling fan and a water pump; the electric compressor and the DCDC controller of the thermal management system are connected with the power battery through the thermal management PTC relay KM 6; the PTC heater is connected to the power battery through a thermal management PTC relay KM 7.
In the application, a thermal management system of a pure electric mine card power battery can ensure that the whole vehicle can work normally in a charging and discharging working mode and can communicate with a battery management system BMS, and the thermal management system executes the working mode sent by the battery management system BMS, wherein a PTC heater, a DCDC controller of the thermal management system and a high-voltage power supply of an electric compressor in the thermal management system are directly arranged in front of a main positive contactor, and the DCDC controller of the thermal management system mainly provides power supply for a water pump and a cooling fan; typically, a group of power batteries is provided with a set of thermal management systems, and the number of the thermal management systems can be calculated in a matching manner according to the heat dissipation requirements of the batteries.
The following describes the working mode of the heat management control system of the battery of the pure electric mine card power battery in detail:
the battery management system BMS mainly works in a charging mode and a discharging mode, and sends corresponding working modes to the thermal management system by utilizing an internal algorithm strategy according to the temperature of the single battery collected by the battery management unit, wherein the working modes mainly comprise a standby mode, a refrigerating mode, a heating mode and a self-circulation mode.
1. Cooling mode: the battery management system BMS sends a refrigeration mode to the thermal management system, and requests high-voltage power-on, the vehicle controller controls the liquid cooling unit contactor to be closed, the liquid cooling unit works, and the compressor sets the target water temperature to be 15 ℃; when Tmax is less than 28 ℃ or Tavg is less than 25 ℃ or the temperature difference is more than 20 ℃, the refrigeration mode is closed;
2. Heating mode: the battery management system BMS sends a heating mode to the thermal management system and requests high-voltage power-on, the whole vehicle controller controls the liquid cooling unit contactor to be closed, the PTC heater contactor to be closed, the water pump, the PTC and the cooling fan work, and the target water temperature of the PTC heater is 60 ℃; when Tmin is more than or equal to 12 ℃ or Tavg is more than or equal to 18 ℃ or the temperature difference is more than or equal to 20 ℃, the heating mode is closed;
3. Self-circulation mode: after the refrigeration mode or the heating mode is closed, self-circulation is carried out for 10 minutes; the battery management system BMS sends out a high-voltage instruction, the liquid cooling unit contactor is closed, and the liquid cooling unit is controlled to start the water pump and not to start the compressor.
4. Standby mode: ① Entering a standby mode after the self-circulation mode is completed; ② And (5) powering up to judge, and entering a standby mode if the cooling or heating mode is not entered.
5. In a special case, when the communication of the CAN bus of the thermal management system fails, the battery management system BMS shall process according to the control strategy and report the corresponding failure level, and the power processing CAN be reduced when appropriate.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (4)
1. The utility model provides a pure electric ore deposit card power battery thermal management control system which characterized in that includes:
The electric compressor is characterized in that one end of the electric compressor is connected with a condenser, the other end of the condenser is connected with a first expansion valve, the other end of the first expansion valve is connected with a PTC heater through a heat exchanger, the other end of the PTC heater is connected with a water pump, the other end of the water pump is respectively connected with a water tank and a coolant machine, the coolant machine is connected with a second expansion valve through the heat exchanger, and the other end of the second expansion valve is connected with the electric compressor;
And the power battery is connected with the cooling liquid machine.
2. The electric only mining card power cell thermal management control system of claim 1, wherein the power cell comprises:
The power battery is internally provided with a liquid cooling plate; the side wall of the power battery is provided with a water inlet and a water outlet.
3. The electric only mining card power battery thermal management control system of claim 1, wherein a radiator fan is further arranged on the condenser.
4. The battery thermal management control system of the pure electric mining card power battery according to claim 1, wherein a cooling liquid inlet end and a cooling liquid outlet end are arranged on the cooling liquid machine, the cooling liquid inlet end is connected with the water pump, and the cooling liquid outlet end is connected with the heat exchanger.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323075984.3U CN221585060U (en) | 2023-11-14 | 2023-11-14 | Thermal management control system for power battery of pure electric mine card |
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| CN202323075984.3U CN221585060U (en) | 2023-11-14 | 2023-11-14 | Thermal management control system for power battery of pure electric mine card |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119170956A (en) * | 2024-11-22 | 2024-12-20 | 临工重机股份有限公司 | A control method, device and mine car for thermal management system |
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- 2023-11-14 CN CN202323075984.3U patent/CN221585060U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119170956A (en) * | 2024-11-22 | 2024-12-20 | 临工重机股份有限公司 | A control method, device and mine car for thermal management system |
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