A new energy locomotive power battery heat guarantee device

Abstract

The utility model discloses a new energy locomotive power battery heat guarantee device relates to rail transit heat exchange technical field, including frame body, frame body is used for being linked with locomotive, and frame body is equipped with condensation chamber, and is equipped with fan, dry cooling device, condenser and compressor in condensation chamber, and dry cooling device is equipped with first pipeline for first medium circulation, and first pipeline is used for communicating with the heat exchange pipeline of battery, and condenser is equipped with second pipeline for second medium circulation, and compressor and second pipeline are in fluid communication, and fan is used for making gas flow in condensation chamber and exchanging heat with first medium, second medium and compressor, and through the integration design, the same fan realizes the cooling of dry cooling device, condenser and compressor three, effectively improves the occupation of multiple fan to condensation chamber, thereby effectively utilizes the space in condensation chamber, and further reduces the occupation of locomotive space.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange technology in rail transit, and in particular to a thermal protection device for the power battery of a new energy locomotive. Background Technology

[0002] As the core energy source of new energy vehicles, the performance of power batteries directly affects the overall performance and range of the vehicle. Power batteries need to be regulated by thermal protection devices to keep them within a suitable operating temperature range, so as to effectively ensure their performance, safety and extend their service life.

[0003] To maintain the power battery within a suitable operating temperature range, it is necessary to configure not only a cooling circuit to cool the power battery, but also a heating circuit to heat the power battery so that the temperature of the power battery is maintained within a controllable range.

[0004] In the process of realizing this utility model, the inventors discovered that the prior art has at least the following problems: In the existing system, multiple independent devices are usually used to cool and heat the power battery, which occupies a lot of space in the locomotive. Moreover, the dry cooler and condenser are independent of each other, and fans need to be configured for the dry cooler and condenser respectively, which occupies a lot of space.

[0005] Therefore, how to effectively reduce the space occupied by locomotives is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to provide a thermal protection device for the power battery of a new energy locomotive, which can effectively improve the problem of space occupation in the locomotive.

[0007] To achieve the above objectives, this utility model provides a thermal protection device for the power battery of a new energy locomotive, including a frame for connecting to the locomotive. The frame is provided with a condensing chamber, which contains a fan, a dry cooler, a condenser, and a compressor. The dry cooler is provided with a first pipe for supplying a first medium, which is connected to the heat exchange pipe of the battery. The condenser is provided with a second pipe for supplying a second medium. The compressor is connected to the second pipe. The fan is used to make the gas flow in the condensing chamber and exchange heat with the first medium, the second medium, and the compressor.

[0008] In one possible design, the condensation chamber includes two air inlet sides arranged opposite each other, and an air outlet side corresponding to the air outlet of the fan, with the air outlet side located between the two air inlet sides;

[0009] At least one air inlet side is provided with a dry cooler, and / or, at least one air inlet side is provided with a condenser.

[0010] In one possible design, the dry cooler and / or condenser are tilted relative to the fan rotation axis.

[0011] In one possible design, there are two dry coolers connected in parallel, with each dry cooler located on a separate air inlet side; and / or,

[0012] There are two condensers, which are connected in parallel and located on two separate air inlet sides.

[0013] In one possible design, when a dry cooler and a condenser are provided on the same air inlet side, the condenser is located on the side of the dry cooler away from the air inlet side, so that the gas enters the condensing chamber from the outside of the condensing chamber through the dry cooler and the condenser in sequence.

[0014] The dry cooler and condenser are integrated into one unit.

[0015] In one possible design, the compressor and the fan are arranged adjacent to each other, with the compressor located between the two air inlet sides. A gas-liquid separator is also provided in the condensation chamber, and the outlet of the gas-liquid separator is in fluid communication with the inlet of the compressor.

[0016] In one possible design, a first cover plate is provided on the air outlet side of the condensing chamber, and a second cover plate is provided on the air inlet side of the condensing chamber. The second cover plate is at least partially angled to the fan rotation axis.

[0017] In one possible design, the frame also includes an evaporation chamber, in which a heat exchanger is provided. The heat exchanger has a first flow channel and a second flow channel spaced apart from each other. The first flow channel is used to allow the first medium to flow, and the second flow channel is used to allow the second medium to flow, so that the first medium and the second medium flowing into the heat exchanger can exchange heat.

[0018] In one possible design, an electric heater is provided in the evaporation chamber, and the heating pipe of the electric heater is connected to the first flow channel. The electric heater is used to heat the first medium flowing through the first flow channel into the heating pipe.

[0019] In one possible design, there are two electric heaters connected in parallel.

[0020] In one possible design, the outlet ends of all heating pipes are connected to the inlet end of a third pipe. The outlet end of the third pipe is provided with two parallel coolant outlets, which are used to connect with the inlet ends of different heat exchange pipes for the first medium to flow into the heat exchange pipes.

[0021] In one possible design, the electric heater is also electrically connected to an electrical control box, which is rotatably connected to the frame and can rotate relative to the frame to be in an open or closed state. The frame is connected to a support rod, and the end of the support rod away from the frame can be connected to the electrical control box in the open state so that the electrical control box can be kept in the open state.

[0022] In one possible design, the frame also includes two side covers arranged opposite each other, and an evaporation cover plate located between the two side covers, the evaporation cover plate and the side covers being used to seal the evaporation chamber.

[0023] Compared with the prior art, the technical solution provided by this utility model has at least the following beneficial effects:

[0024] The dry cooler with a first pipeline, the condenser with a second pipeline, and the compressor connected to the second pipeline are integrated into the same condensing chamber. A fan installed in the condensing chamber operates, causing gas to flow in the condensing chamber and exchange heat with a first medium in the first pipeline, a second medium in the second pipeline for heat exchange with the first medium, and the compressor connected to the second pipeline. The first medium flows to the heat exchange pipeline connected to the first pipeline and then exchanges heat with the battery. Through integrated design, a single fan can cool the dry cooler, condenser, and compressor, effectively reducing the space occupied by multiple fans in the condensing chamber, thereby making effective use of the space in the condensing chamber and reducing the space occupied by the locomotive. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of the thermal protection device for the power battery of a new energy locomotive provided in an embodiment of the present utility model;

[0027] Figure 2 This is a schematic diagram of the internal structure of the thermal protection device for the power battery of a new energy locomotive provided in an embodiment of the present utility model;

[0028] Figure 3 This is a schematic diagram of the evaporation chamber provided in an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of the coolant inlet and the coolant outlet provided in an embodiment of the present invention.

[0030] in:

[0031] 1-Frame, 101-Condensation chamber, 102-First cover plate, 103-Second cover plate, 104-Evaporation chamber, 105-Side cover, 106-Evaporation cover plate, 107-Liquid filling cover plate, 108-Unit outlet;

[0032] 2- Fan;

[0033] 3-Dry cooler;

[0034] 4-Condenser;

[0035] 5-Compressor;

[0036] 6-Gas-liquid separator;

[0037] 7-Heat exchanger;

[0038] 8-Electric heater;

[0039] 9-Coolant inlet;

[0040] 10 - Coolant outlet;

[0041] 11-Electrical control box, 111-Connector;

[0042] 12-Drying filter;

[0043] 13-Expansion tank;

[0044] 14-Water pump;

[0045] 15-Liquid path filter;

[0046] 16-Strut. Detailed Implementation

[0047] 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.

[0048] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0049] In the description of this utility model, it should be understood that the terms "inner", "outer", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the position or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations of this utility model.

[0050] The purpose of this invention is to provide a thermal protection device for the power battery of a new energy locomotive, which can effectively reduce the space occupied by the locomotive.

[0051] Please see Figure 1 and Figure 3 To achieve the above objectives, this utility model provides a thermal protection device for a power battery of a new energy locomotive, including a frame 1. The frame 1 is used to connect to the locomotive to achieve top-mounted installation of the thermal protection device on the top of the locomotive. The frame 1 is provided with a condensing chamber 101. The frame 1 includes a base plate and several side plates connected to the base plate. The frame 1 can be fixed by connecting the base plate to the top of the locomotive. The condensing chamber 101 is formed by the side plates and part of the base plate and has a certain accommodating space. The condensing chamber 101 is provided with a fan 2, a dry cooler 3, a condenser 4, and a compressor 5. The dry cooler 3, the condenser 4, and the compressor 5 share the same fan 2. The dry cooler 3 is provided with a first pipe for the flow of a first medium. The first pipe is used to connect with the heat exchange pipe of the battery so that the first medium flowing to the heat exchange pipe can heat or cool the battery. The condenser 4 is provided with a second medium for the flow of... The second pipeline is connected to the compressor 5 in fluid communication. The compressor 5 is used to convert low-temperature, low-pressure gas into high-temperature, high-pressure gas, which is then condensed into liquid after flowing into the condenser 4. The second medium is used to exchange heat with the first medium in the heat exchanger 7 to reduce the temperature of the first medium. The fan 2 is used to make the gas flow in the condensing chamber 101 and exchange heat with the first medium, the second medium, and the compressor 5. The condensing chamber 101 is not equipped with a baffle to block the flow of gas, so as to ensure that the gas can fully contact the dry cooler 3, the condenser 4, and the compressor 5 and effectively remove excess heat from the dry cooler 3, the condenser 4, and the compressor 5.

[0052] The dry cooler 3 with a first pipeline, the condenser 4 with a second pipeline, and the compressor 5 connected to the second pipeline are integrated into the same condensing chamber 101. A fan 2 installed in the condensing chamber 101 operates, causing gas to flow within the chamber and exchange heat with the first medium in the first pipeline, the second medium in the second pipeline (used for heat exchange with the first medium), and the compressor 5 connected to the second pipeline. This effectively removes excess heat from the dry cooler 3, condenser 4, and compressor 5, thus improving the cooling efficiency of the dry cooler 3 and condenser 4. The temperature of the condenser 4 and the motor section of the compressor 5 is effectively reduced, which in turn effectively reduces the temperature of the second and first media. The first media then flows to the heat exchange pipeline connected to the first pipeline for heat exchange with the battery. Through integrated design, the same fan 2 cools the dry cooler 3, condenser 4, and compressor 5, effectively reducing the occupancy of the condensing chamber 101 by multiple fans 2. This effectively utilizes the space within the condensing chamber 101, reducing the space occupied by the locomotive and improving the utilization rate of natural cooling sources, thus contributing to energy conservation. Simultaneously, the fan 2 accelerates the heat exchange efficiency between the compressor 5's casing and the surrounding air through forced convection, effectively improving the situation where the heat from the compressor 5 cannot dissipate within the frame 1, leading to a decrease in overall system efficiency or even a chain reaction of failures, thus effectively ensuring the service life of the compressor 5.

[0053] In one embodiment, the condensing chamber 101 includes two air inlet sides arranged opposite each other and an air outlet side corresponding to the air outlet of the fan 2. The air outlet side is located between the two air inlet sides. The two air inlet sides arranged opposite each other can expand the air inlet area and effectively reduce the problem of uneven airflow distribution caused by excessively high or low wind speed when air is introduced from one side. By placing the air outlet side between the two air inlet sides, the distance between the air outlet side and the air inlet side can be shortened, which facilitates the dissipation of gas from various positions in the condensing chamber 101 along the air outlet side, effectively improving the gas flow effect in the condensing chamber 101. It should be noted that the air inlet side and the air outlet side do not need to be provided with separate air ducts and can be directly utilized by the frame. The ventilation holes provided on the frame 1 are sufficient. At least one dry cooler 3 and / or at least one condenser 4 are provided on the air inlet side. By placing at least one of the dry cooler 3 and condenser 4 on the air inlet side, it is convenient to directly exchange heat with the gas outside the condensation chamber 101. For example, when the train is running, when air flows over the outer surface of the frame 1, it can directly exchange heat with the dry cooler 3 and condenser 4 on the air inlet side, reducing the use of the fan 2 and saving energy. In addition, when the gas enters the condensation chamber 101 and carries away heat, the gas temperature at the air inlet side is usually lower. Compared with other positions, the heat exchange efficiency of the dry cooler 3 or condenser 4 on the air inlet side is higher.

[0054] In one embodiment, a first cover plate 102 is provided on the air outlet side of the condensing chamber 101, and a second cover plate 103 is provided on the air inlet side of the condensing chamber 101. The first cover plate 102 has a first ventilation hole for airflow from the air outlet of the fan 2 to exit the condensing chamber 101. The second cover plate 103 has a second ventilation hole with a mesh structure, which can both allow gas to enter the condensing chamber 101 and block impurities in the air. The second cover plate 103 is at least partially angled to the rotation axis of the fan 2 to effectively prevent airflow from flowing out of the fan 2. The airflow direction into the condensing chamber 101 is perpendicular to the rotation axis of the fan 2, so as to guide the airflow to various positions in the condensing chamber 101. At the same time, the tilt of part of the second cover plate 103 relative to the rotation axis of the fan 2 can effectively reduce the overall volume of the frame 1. The dry cooler 3 and / or condenser 4 are tilted relative to the rotation axis of the fan 2, corresponding to the second cover plate 103, so as to make the gas flowing into the condensing chamber 101 along the air inlet side flow vertically to the dry cooler 3 and condenser 4, thereby improving the heat dissipation effect of the dry cooler 3 and condenser 4.

[0055] In one embodiment, there are two dry coolers 3, which are connected in parallel and located on two separate air inlet sides in a figure-eight configuration. By having one dry cooler 3 exchange heat on one air inlet side and the other on the other, the heat exchange efficiency of the dry coolers 3 can be effectively improved. Furthermore, if one dry cooler 3 fails, the other dry cooler 3 can still ensure the normal operation of the entire device. Similarly, there are two condensers 4, which are connected in parallel and located on two separate air inlet sides in a figure-eight configuration. By having one condenser 4 exchange heat on one air inlet side and the other on the other, the heat exchange efficiency of the condensers 4 can be effectively improved. Furthermore, if one condenser 4 fails, the other condenser 4 can still ensure the normal operation of the entire device.

[0056] It should be noted that when both the dry cooler 3 and the condenser 4 are installed on the same air inlet side, the condenser 4 is located on the side of the dry cooler 3 away from the air inlet side. This allows the gas to enter the condensing chamber 101 from outside and pass through the dry cooler 3 and the condenser 4 sequentially. This effectively prevents the air from carrying away a large amount of heat when passing through the condenser 4 first, thus avoiding the inability to effectively cool the dry cooler 3. When both the dry cooler 3 and the condenser 4 use fins for heat dissipation, they can be configured to share a set of fins. Even if only one of the dry cooler 3 or the condenser 4 is operating, the fins can be fully utilized to improve the heat exchange efficiency of either the dry cooler 3 or the condenser 4. The dry cooler 3 and the condenser 4 are integrated into one unit.

[0057] In one embodiment, the dry cooler 3 and the condenser 4 are arranged in the radial direction of the fan 2, and the two air inlet sides are located on opposite sides in the radial direction of the fan 2. The compressor 5 is arranged adjacent to the fan 2 and is located between the two air inlet sides, so that the airflow entering the condensing chamber 101 along the two air inlet sides can exchange heat with the compressor 5. The adjacent arrangement of the compressor 5 and the fan 2 increases the airflow velocity at the compressor 5, effectively improving the cooling efficiency of the compressor 5. The condensing chamber 101 is also provided with a gas-liquid separator 6 and a dryer filter 12 to improve the space utilization of the condensing chamber 101. The outlet of the gas-liquid separator 6 is fluidly connected to the inlet of the compressor 5. The gas-liquid separator 6 is used to separate gas and liquid and prevent the liquid second medium from entering the compressor 5. The dryer filter 12 is used to filter impurities in the second medium to prevent impurities in the second medium from affecting the function of the expansion valve in the following refrigeration circuit.

[0058] In one embodiment, the frame 1 further includes an evaporation chamber 104, which is separated from the condensation chamber 101 by a partition. When the fan 2 is running, the condensation chamber 101 is easily formed into a negative pressure environment. The evaporation chamber 104 is provided with a heat exchanger 7, which can be, but is not limited to, a plate heat exchanger 7. The heat exchanger 7 is provided with a first flow channel and a second flow channel that are spaced apart and can exchange heat with each other. The first flow channel is used for the flow of a first medium, and the second flow channel is used for the flow of a second medium, so that the first medium and the second medium flowing into the heat exchanger 7 can exchange heat. The frame 1 is also equipped with a water pump 14 and a circulation pipe. The circulation pipe is equipped with a valve body to control the flow of the first medium in the circulation pipe to the first flow channel and / or the first pipeline. When the first medium flows to the first flow channel, it can exchange heat with the second medium in the second flow channel to reduce its own temperature. When the first medium flows to the first pipeline and the fan 2 is running, the first medium can be cooled down by the flow of air. The inlet end of the circulation pipe is used to connect with the outlet end of the heat exchange pipeline of the battery. The water pump 14 is set on the circulation pipe to provide power for the circulation of the first medium.

[0059] It should be noted that the compressor 5, the second pipeline of the condenser 4, the expansion valve, the second flow channel of the heat exchanger 7, the gas-liquid separator 6, and the corresponding pipelines constitute a refrigeration circuit. The refrigeration circuit is filled with a second medium, which is refrigerant. Under the driving force provided by the compressor 5, the refrigerant can achieve the following flow path: compressor 5 - second pipeline of condenser 4 - expansion valve - second flow channel of heat exchanger 7 - compressor 5, thereby realizing a refrigeration cycle. The expansion valve can be, but is not limited to, an electronic expansion valve. The refrigeration circuit is equipped with a frequency converter, which is electrically connected to the compressor 5 to control the variable frequency operation of the compressor 5 according to the refrigeration needs.

[0060] Please see Figure 2In one embodiment, an electric heater 8 is provided in the evaporation chamber 104. The heating pipe of the electric heater 8 is connected to the first flow channel. The electric heater 8 is used to heat the first medium flowing through the first flow channel into the heating pipe. The outlet ends of the first pipe and all heating pipes are connected to the inlet end of the third pipe. The outlet end of the third pipe is used to connect to the inlet end of the heat exchange pipe so that the first medium can flow into the heat exchange pipe. It should be noted that an expansion tank 13 is also connected to the flow pipe. The expansion tank 13 is used to buffer the change in volume of the first medium caused by thermal expansion and contraction. The first medium is a coolant. The water pump 14, the expansion tank 13, the first pipe of the dry cooler 3 and the corresponding pipes form a first liquid cooling circuit. The water pump 14, the expansion tank 13, the first flow channel of the heat exchanger 7, the electric heater 8 and the corresponding pipes form a second liquid cooling circuit. The coolant from the heat exchange pipeline can selectively connect to the first pipeline of the dry cooler 3 and / or the first flow channel of the heat exchanger 7, that is, the first liquid cooling circuit and the second liquid cooling circuit can be selectively used. A liquid filter 15 is also provided in the evaporation chamber 104 to filter the coolant entering the first and second liquid cooling circuits, preventing impurities in the coolant from affecting the operation of the water pump 14 and the heat exchanger 7. In addition, one end of the first pipeline is connected upstream of the first flow channel, and the other end of the first pipeline is connected downstream of the heating pipeline.

[0061] Please see Figure 4 There are two electric heaters 8, which are connected in parallel to improve the heating efficiency of the electric heaters 8. Only one electric heater 8 can be turned on according to actual heating needs to reduce energy consumption. The outlet end of the third pipe has two parallel coolant outlets 10, which are used to connect with the inlet ends of different heat exchange pipelines. The inlet end of the flow pipe has two parallel coolant inlets 9, which are used to connect with the outlet ends of different heat exchange pipelines. This allows the first medium to flow into the first and second liquid cooling circuits, and the battery temperature is regulated by the coolant. Each coolant outlet 10 and coolant inlet 9 is configured with two lines, and both are connected in parallel to the heat exchange pipelines of the locomotive power battery. This helps to improve the coolant circulation rate, further improving the thermal management effect of the power battery. It also has interface redundancy, improving the overall reliability of the device.

[0062] When battery cooling is required, the electric heater 8 can be turned off and the fan 2 can be turned on. The refrigerant flows along the first liquid cooling circuit and / or the second liquid cooling circuit, and after being cooled by the dry cooler 3 and / or the heat exchanger 7, it flows to the heat exchange pipeline to cool the battery. When battery heating is required, the electric heater 8 can be turned on and the fan 2 can be turned off. The refrigerant flows along the second liquid cooling circuit, and after being heated by the electric heater 8, it flows to the heat exchange pipeline to heat the battery. It should be noted that turning off the electric heater 8 does not block the flow of the first medium; that is, turning off the electric heater 8 only turns off the heating function.

[0063] In one embodiment, the electric heater 8 is also electrically connected to an electrical control box 11. The electrical control box 11 is rotatably connected to the frame 1 and can rotate relative to the frame 1 to be in an open or closed state. The rotatable connection between the electrical control box 11 and the frame 1 can be hinged. The frame 1 is provided with a support rod 16, and the electrical control box 11 is provided with a support rod seat. The end of the support rod 16 facing away from the frame 1 can be connected to the support rod seat of the electrical control box 11 in the open state, so as to keep the electrical control box 11 in the open state, that is, the electrical control box 11 and the frame 1 maintain a certain rotation angle. The design provides a maintenance space between the electrical control box 11 and the frame 1, which can be used to maintain the components on the frame 1 (e.g., the electric heater 8) and the electrical components (e.g., the cooling fan) at the bottom of the electrical control box 11. The airflow in the maintenance space can also be used to dissipate heat from the components on the frame 1 and the electrical control box 11. The electrical control box 11 is equipped with a connector 111 for cable connection. The frame 1 is also equipped with two spaced unit outlets 108 for cables to pass through the frame 1 and connect to an external power source.

[0064] In one embodiment, the frame 1 further includes two side covers 105 disposed opposite to each other, and an evaporation cover plate 106 located between the two side covers 105. The evaporation cover plate 106 and the side covers 105 are used to close the evaporation chamber 104. A liquid filling cover plate 107 may be provided on the side covers 105 and the evaporation cover plate 106 for adding coolant to the expansion tank 13.

[0065] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0066] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0067] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A thermal protection device for the power battery of a new energy locomotive, characterized in that, The system includes a frame (1) for connecting to a locomotive. The frame (1) is provided with a condensing chamber (101). The condensing chamber (101) is provided with a fan (2), a dry cooler (3), a condenser (4), and a compressor (5). The dry cooler (3) is provided with a first pipeline for supplying a first medium. The first pipeline is connected to the heat exchange pipeline of the battery. The condenser (4) is provided with a second pipeline for supplying a second medium. The compressor (5) is connected to the second pipeline. The fan (2) is used to make the gas flow in the condensing chamber (101) and exchange heat with the first medium, the second medium, and the compressor (5).

2. The thermal protection device for the power battery of a new energy locomotive according to claim 1, characterized in that, The condensation chamber (101) includes two air inlet sides arranged opposite to each other, and an air outlet side corresponding to the air outlet of the fan (2), the air outlet side being located between the two air inlet sides; At least one of the air inlet sides is provided with the dry cooler (3), and / or at least one of the air inlet sides is provided with the condenser (4).

3. The thermal protection device for the power battery of a new energy locomotive according to claim 1, characterized in that, The dry cooler (3) and / or the condenser (4) are arranged at an angle relative to the rotation axis of the fan (2).

4. The thermal protection device for the power battery of a new energy locomotive according to claim 2, characterized in that, There are two dry coolers (3), and the two dry coolers (3) are arranged in parallel, with the two dry coolers (3) located at the two air inlet sides respectively; and / or, There are two condensers (4), and the two condensers (4) are arranged in parallel, and the two condensers (4) are located at the two air inlet sides respectively.

5. The thermal protection device for the power battery of a new energy locomotive according to claim 2, characterized in that, When the dry cooler (3) and the condenser (4) are provided on the same air inlet side, the condenser (4) is located on the side of the dry cooler (3) away from the air inlet side, so that when the gas enters the condensing chamber (101) from outside the condensing chamber (101), it passes through the dry cooler (3) and the condenser (4) in sequence. The dry cooler (3) and the condenser (4) are integrated into one unit.

6. The thermal protection device for the power battery of a new energy locomotive according to claim 2, characterized in that, The compressor (5) is arranged adjacent to the fan (2), and the compressor (5) is located between the two air inlet sides. The condensing chamber (101) is also provided with a gas-liquid separator (6), and the outlet of the gas-liquid separator (6) is in fluid communication with the inlet of the compressor (5).

7. The thermal protection device for the power battery of a new energy locomotive according to claim 2, characterized in that, The condensing chamber (101) has a first cover plate (102) on the air outlet side and a second cover plate (103) on the air inlet side. The second cover plate (103) is at least partially angled to the rotation axis of the fan (2).

8. The thermal protection device for the power battery of a new energy locomotive according to any one of claims 1-7, characterized in that, The frame (1) also includes an evaporation chamber (104), in which a heat exchanger (7) is provided. The heat exchanger (7) has a first flow channel and a second flow channel spaced apart. The first flow channel is used for the flow of a first medium, and the second flow channel is used for the flow of a second medium, so that the first medium and the second medium flowing into the heat exchanger (7) can exchange heat.

9. The thermal protection device for the power battery of a new energy locomotive according to claim 8, characterized in that, An electric heater (8) is provided in the evaporation chamber (104). The heating pipe of the electric heater (8) is connected to the first flow channel. The electric heater (8) is used to heat the first medium that flows through the first flow channel into the heating pipe.

10. The thermal protection device for the power battery of a new energy locomotive according to claim 9, characterized in that, There are two electric heaters (8), and the two electric heaters (8) are connected in parallel.

11. The thermal protection device for the power battery of a new energy locomotive according to claim 9, characterized in that, The outlet end of all the heating pipes is connected to the inlet end of the third pipe. The outlet end of the third pipe is provided with two parallel coolant outlets (10). The two coolant outlets (10) are used to connect with the inlet ends of different heat exchange pipes so that the first medium can flow into the heat exchange pipes.

12. The thermal protection device for the power battery of a new energy locomotive according to claim 9, characterized in that, The electric heater (8) is also electrically connected to an electric control box (11). The electric control box (11) is rotatably connected to the frame (1) and can rotate relative to the frame (1) to be in an open or closed state. The frame (1) is connected to a support rod (16). One end of the support rod (16) away from the frame (1) can be connected to the electric control box (11) in the open state so that the electric control box (11) can maintain the open state.

13. The thermal protection device for the power battery of a new energy locomotive according to claim 8, characterized in that, The frame (1) also includes two side covers (105) arranged opposite to each other, and an evaporation cover (106) located between the two side covers (105), the evaporation cover (106) and the side covers (105) being used to close the evaporation chamber (104).

Images