Power battery heat guarantee device and new energy locomotive

Abstract

The utility model discloses a power battery heat guarantee device, including frame and install in the condenser, dry cooling ware and fan of frame, the side board surface of condenser and the side board surface of dry cooling ware are opposite and are close to each other, and the opposite board surface between condenser and dry cooling ware is provided with gap, and the fan provides heat exchange airflow for condenser and dry cooling ware, namely, condenser and dry cooling ware share the fan. It can be seen that the opposite board surface between condenser and dry cooling ware is provided with gap to effectively prevent heat transfer interference of both, and condenser and dry cooling ware are close to each other, and are integrated conveniently, and the structure is more compact, improves space utilization, and condenser and dry cooling ware can share a set of fan, and reduce manufacturing cost. The utility model discloses a new energy locomotive including above-mentioned power battery heat guarantee device.

Description

Technical Field

[0001] This utility model relates to the field of rail transit, and in particular to a power battery thermal protection device. Furthermore, this utility model also relates to a new energy locomotive including the aforementioned power battery thermal protection device. Background Technology

[0002] To maintain the power battery of new energy vehicles within a suitable operating temperature range, a power battery thermal protection device is needed to regulate the temperature of the power battery, thereby ensuring its performance, safety, and extending its service life.

[0003] In the existing system, the power battery thermal protection device includes a refrigeration circuit and a liquid cooling circuit. The refrigeration circuit consists of a compressor, a plate heat exchanger, a condenser, an electronic expansion valve, and corresponding pipelines. The refrigeration circuit is filled with refrigerant, which circulates under the driving force provided by the compressor, thereby realizing a refrigeration cycle. The liquid cooling circuit consists of a circulating pump, an expansion tank, a dry cooler, an electric heater, and corresponding pipelines. The coolant flow channel of the plate heat exchanger is connected to the liquid cooling circuit. The coolant from the battery cabinet can selectively connect to the coolant flow channel of the dry cooler and / or the plate heat exchanger, thereby realizing a liquid cooling cycle.

[0004] In the process of realizing this invention, the inventors discovered that the prior art has at least the following problems: the condenser and the dry cooler are arranged separately, which requires more space and requires fans to be configured separately, resulting in higher manufacturing costs.

[0005] Therefore, how to provide a power battery thermal protection device that uses a shared fan for both the refrigeration circuit and the liquid cooling circuit 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 power battery thermal protection device that shares a fan between the cooling circuit and the liquid cooling circuit, resulting in a more compact structure and improved space utilization. Another purpose of this invention is to provide a new energy locomotive that includes the aforementioned power battery thermal protection device.

[0007] To effectively solve the above-mentioned technical problems, this utility model provides a power battery thermal protection device, including a frame and a condenser, a dry cooler and a fan installed in the frame. One side plate of the condenser and one side plate of the dry cooler are arranged opposite to each other and close to each other, and a gap is provided between the opposite plates of the condenser and the dry cooler. The condenser and the dry cooler share the fan.

[0008] Optionally, the condenser and the dry cooler are integrated into one unit;

[0009] The condenser and the dry cooler are rectangular plates arranged opposite each other. One longitudinal end of the condenser and the dry cooler is connected to a first positioning plate, and the other longitudinal end of the condenser and the dry cooler is connected to a second positioning plate.

[0010] Optionally, the first positioning plate is provided with a condenser inlet manifold and a condenser outlet manifold connecting the condenser, and the first positioning plate is also provided with a dry cooler inlet manifold and a dry cooler outlet manifold connecting the dry cooler. The second positioning plate is connected to the inner wall of the frame. The dry cooler is located above the condenser. The inner side of the first positioning plate is connected to the condenser and the dry cooler. The dry cooler inlet manifold and the dry cooler outlet manifold are located on the upper part of the outer side of the first positioning plate, and the condenser inlet manifold and the condenser outlet manifold are located on the lower part of the outer side of the first positioning plate.

[0011] Optionally, the fan includes two condensers and two dry coolers, with one set of condensers and dry coolers located on one side of the fan and the other set of condensers and dry coolers located on the other side of the fan.

[0012] Optionally, the two sets of condensers and dry coolers are arranged symmetrically and obliquely on both sides of the fan, with the inner side of the condenser and dry cooler in the same set being higher than the outer side.

[0013] Optionally, air inlet grilles are provided on both sides of the frame in the lateral direction, the upper plate of the dry cooler faces the corresponding air inlet grille, and the lower plate of the condenser faces the fan, so that the airflow flows through the dry cooler and the condenser in sequence.

[0014] Optionally, the frame is provided with a first cavity and a second cavity arranged longitudinally. The fan, two sets of condensers and the dry cooler are installed in the first cavity. The first cavity is also equipped with a compressor, a gas-liquid separator and a dry filter. The second cavity is equipped with a circulating pump, a plate heat exchanger, an expansion tank and an electrical control box.

[0015] Optionally, the condenser is connected to the refrigerant flow path of the compressor and the plate heat exchanger, one end of the dry cooler is connected upstream of the coolant flow path of the plate heat exchanger, and the other end of the dry cooler is connected downstream of the coolant flow path of the plate heat exchanger.

[0016] Optionally, the fan is located in the middle of the upper part of the first cavity, the two sets of condensers and the dry cooler are located on the lateral sides of the upper part of the first cavity, and the compressor and the dry filter are located in the middle of the lower part of the first cavity, respectively on the longitudinal sides.

[0017] This utility model provides a new energy vehicle, including a vehicle body and a power battery thermal protection device installed on the top of the vehicle body, wherein the power battery thermal protection device is specifically any of the power battery thermal protection devices described above.

[0018] Compared with the prior art, the technical solution provided by this utility model has at least the following beneficial effects:

[0019] This utility model provides a power battery thermal protection device, including a frame and a condenser, a dry cooler, and a fan installed within the frame. One side panel of the condenser and one side panel of the dry cooler are positioned opposite each other and close to each other, with a gap between the opposing panels. The condenser and dry cooler share a fan. It can be seen that the gap between the opposing panels of the condenser and dry cooler effectively prevents mutual interference in heat transfer. The close proximity of the condenser and dry cooler facilitates integration into a single unit, resulting in a more compact structure and improved space utilization. Furthermore, the ability for the condenser and dry cooler to share a single fan reduces manufacturing costs.

[0020] This utility model also provides a new energy locomotive including the above-mentioned power battery thermal protection device. Since the above-mentioned power battery thermal protection device has the above-mentioned technical effects, the above-mentioned new energy locomotive should also have the same technical effects, and will not be described in detail here. Attached Figure Description

[0021] Figure 1 A schematic diagram of a specific embodiment of the power battery thermal protection device provided by this utility model;

[0022] Figure 2 This is an internal schematic diagram of a specific embodiment of the power battery thermal protection device provided by this utility model.

[0023] Figure 3 This is a schematic diagram of the condenser and dry cooler in one specific embodiment of the power battery thermal protection device provided by this utility model.

[0024] The components include: frame 1, condenser 2, dry cooler 3, fan 4, first positioning plate 5, second positioning plate 6, condenser inlet manifold 7, condenser outlet manifold 8, dry cooler inlet manifold 9, dry cooler outlet manifold 10, air inlet grille 11, compressor 12, gas-liquid separator 13, dryer filter 14, circulating pump 15, plate heat exchanger 16, expansion tank 17, and electrical control box 18. Detailed Implementation

[0025] The core of this invention is to provide a power battery thermal protection device, in which the cooling circuit and liquid cooling circuit share a common fan, resulting in a more compact structure and improved space utilization. Another core aspect of this invention is to provide a new energy locomotive that includes the aforementioned power battery thermal protection device.

[0026] 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.

[0027] Please refer to Figures 1 to 3 , Figure 1 A schematic diagram of a specific embodiment of the power battery thermal protection device provided by this utility model; Figure 2 This is an internal schematic diagram of a specific embodiment of the power battery thermal protection device provided by this utility model. Figure 3 This is a schematic diagram of the condenser and dry cooler in one specific embodiment of the power battery thermal protection device provided by this utility model.

[0028] This utility model provides a power battery thermal protection device, including a frame 1 and a condenser 2, a dry cooler 3, and a fan 4 installed within the frame 1. The frame 1 is used to install on the top of the vehicle body. The frame 1 can be a rectangular structure, embedded in a groove on the top of the vehicle body. A cover plate is provided above the frame 1 to cover the components within the frame 1, and the cover plate is flush with the top of the vehicle body, forming an integrated structure to ensure the streamlined structure of the new energy vehicle during operation. The vehicle body's running direction is defined as longitudinal, that is, the length direction of the vehicle body is longitudinal, and the width direction of the vehicle body is transverse. Both condenser 2 and dry cooler 3 are coil structures with fins on the outside of the coil structure to enhance heat exchange between the air and the medium inside the coil. The coil structure and fins of condenser 2 and dry cooler 3 form a plate structure. One side of the plate of condenser 2 and one side of the plate of dry cooler 3 are arranged opposite each other and close to each other, and there is a gap between the opposite plates of condenser 2 and dry cooler 3. Fan 4 provides heat exchange airflow for condenser 2 and dry cooler 3, that is, condenser 2 and dry cooler 3 share fan 4.

[0029] Condenser 2 connects the refrigerant channels of compressor 12 and plate heat exchanger 16 to achieve a refrigeration cycle. One end of dry cooler 3 is connected between circulating pump 15 and the coolant channel of plate heat exchanger 16, and the other end of dry cooler 3 is connected downstream of the coolant channel of plate heat exchanger 16 to achieve liquid cooling cycle. A gap is provided between the opposing plates of condenser 2 and dry cooler 3 to effectively prevent mutual interference in heat transfer. Condenser 2 and dry cooler 3 are close to each other, facilitating integration into a single unit, resulting in a more compact structure, improved space utilization, and the ability of condenser 2 and dry cooler 3 to share a single fan 4, reducing manufacturing costs.

[0030] In one embodiment, the condenser 2 and the dry cooler 3 are integrated into one unit, and the condenser 2 and the dry cooler 3 share the fan 4.

[0031] The power battery thermal protection device provided in this specific embodiment integrates a condenser 2 and a dry cooler 3 into one unit. Specifically, the condenser 2 and the dry cooler 3 are rectangular plates arranged opposite each other. One longitudinal end of the condenser 2 and the dry cooler 3 is connected to a first positioning plate 5, and the other longitudinal end of the condenser 2 and the dry cooler 3 is connected to a second positioning plate 6. In this embodiment, the two plates, condenser 2 and dry cooler 3, are stacked together. In the attached drawings, the two longitudinal ends of the condenser 2 and the dry cooler 3 are the left and right ends, respectively. The left ends of the condenser 2 and the dry cooler 3 are connected to the first positioning plate 5, and the right ends of the condenser 2 and the dry cooler 3 are connected to the second positioning plate 6. Specifically, the side of the first positioning plate 5 and the second positioning plate 6 facing the condenser 2 and the dry cooler 3 is the inner side, and the side away from the condenser 2 and the dry cooler 3 is the outer side. The edges of the first positioning plate 5 and the second positioning plate 6 are provided with outwardly extending flanges, which not only improve the strength of the plates, but also provide mounting holes on the flanges to connect with the frame 1, so that the condenser 2 and the dry cooler 3 can be stably installed in the frame 1.

[0032] Preferably, in order to achieve smooth flow of the medium, both the condenser 2 and the dry cooler 3 need to be equipped with inlet manifolds and outlet manifolds. Therefore, the condenser 2 is equipped with a condenser inlet manifold 7 and a condenser outlet manifold 8, and the dry cooler 3 is equipped with a dry cooler inlet manifold 9 and a dry cooler outlet manifold 10. In the first embodiment, the condenser inlet manifold 7, the condenser outlet manifold 8, the dry cooler inlet manifold 9, and the dry cooler outlet manifold 10 are all set on the first positioning plate 5, so that each manifold is set on the same side, which facilitates the layout of each component. The second positioning plate 6 is connected to the inner wall of the frame 1.

[0033] Furthermore, the dry cooler 3 is positioned above the condenser 2. The inner side of the first positioning plate 5 connects the condenser 2 and the dry cooler 3. The dry cooler inlet manifold 9 and the dry cooler outlet manifold 10 are located on the upper part of the outer side of the first positioning plate 5, while the condenser inlet manifold 7 and the condenser outlet manifold 8 are located on the lower part of the outer side of the first positioning plate 5. The inlet and outlet manifolds of the same component are arranged horizontally side by side, and the positions of the interfaces are set according to the layout of other components.

[0034] In Embodiment 2, the condenser inlet manifold 7 and the condenser outlet manifold 8 are mounted on the first positioning plate 5, the dry cooler inlet manifold 9 and the dry cooler outlet manifold 10 are mounted on the second positioning plate 6, the dry cooler 3 is mounted above the condenser 2, the dry cooler inlet manifold 9 and the dry cooler outlet manifold 10 are mounted on the upper outer side of the second positioning plate 6, and the condenser inlet manifold 7 and the condenser outlet manifold 8 are mounted on the lower outer side of the first positioning plate 5.

[0035] The layout of each pipe fitting can also be adjusted according to the situation, all of which are within the protection scope of this utility model.

[0036] Based on the power battery thermal protection device provided in the above specific embodiments, to achieve redundancy design, two condensers 2 and two dry coolers 3 can be set up. The two condensers 2 are connected in parallel and arranged on both sides of the fan 4, and the two dry coolers 3 are also connected in parallel and arranged on both sides of the fan 4. That is, the condensers 2 and dry coolers 3 on the same side form a group, one group of condensers 2 and dry coolers 3 is set on one side of the fan 4, and the other group of condensers 2 and dry coolers 3 is set on the other side of the fan 4. In this way, the reliability and safety of the equipment are improved, and when one group of equipment fails, the other group of equipment can still operate normally.

[0037] Furthermore, the two sets of condensers 2 and dry coolers 3 are arranged symmetrically and obliquely on both sides of the fan 4, with the inner side of the condenser 2 and dry cooler 3 in the same set being higher than the outer side. That is, the side of the condenser 2 and dry cooler 3 closer to the fan 4 is the inner side, and the side farther from the fan 4 is the outer side. The outer side of the condenser 2 and dry cooler 3 is inclined downwards, and the two sets of equipment are arranged in a figure-eight shape within the frame 1.

[0038] The frame 1 has inlet grilles 11 on both sides. Due to the inclined arrangement of the condenser 2 and the dry cooler 3, the upper surface of the dry cooler 3 faces the corresponding inlet grille 11, and the lower surface of the condenser 2 faces the fan 4, allowing airflow to pass sequentially through the dry cooler 3 and the condenser 2. Specifically, during operation, the fan 4 starts, and the airflow enters the frame 1 laterally through the inlet grille 11. After passing sequentially through the dry cooler 3 and the condenser 2, the heat-exchange airflow is discharged vertically upwards under the action of the fan 4. An outlet grille can be installed on the cover plate of the frame 1 corresponding to the position of the fan 4 to save space and achieve optimal airflow direction. The arrangement of the dry cooler 3 and the condenser 2 can also be adjusted as needed. For example, if only one set of dry cooler 3 and condenser 2 is installed, the fan 4 can be directly placed above the dry cooler 3, with the heat-exchange airflow flowing vertically. Additionally, a grille can be installed on the cover plate of the frame 1 corresponding to the position of the dry cooler 3 to increase the airflow and improve the heat exchange efficiency of the dry cooler 3 and the condenser 2. Furthermore, an air guide structure can be installed between the condenser 2, the dry cooler 3 and the frame 1 to guide the airflow introduced at the grille to the dry cooler 3 and the condenser 2 more efficiently, reducing air leakage.

[0039] In the power battery thermal protection device provided in the specific embodiment of this utility model, the frame 1 is provided with a first cavity and a second cavity arranged longitudinally. A partition can be provided between the first cavity and the second cavity to effectively prevent heat transfer between them. The fan 4, two sets of condensers 2 and dry cooler 3 are installed in the first cavity. At the same time, the compressor 12, gas-liquid separator 13 and dry filter 14 are also installed in the first cavity. The circulating pump 15, plate heat exchanger 16, expansion tank 17 and electrical control box 18 are installed in the second cavity.

[0040] Specifically, the fan 4 is located in the middle of the upper part of the first chamber, the two sets of condensers 2 and the dry cooler 3 are located on the horizontal sides of the upper part of the first chamber, and the compressor 12 and the dryer filter 14 are located in the middle of the lower part of the first chamber, respectively on the vertical sides. The gas-liquid separator 13 is located between the compressor 12 and the dryer filter 14, and the three are close to the edge, forming sufficient space to install the fan 4 and providing a smooth air duct for the fan 4. In the second chamber, the plate heat exchanger 16, the circulating pump 15, and the expansion tank 17 are arranged horizontally on the right side, and the electrical control box 18 is arranged on the left side. The electrical control box 18 is connected to each electrical device to control the stable operation of each device.

[0041] Specifically, condenser 2 connects the refrigerant channels of compressor 12 and plate heat exchanger 16, and one end of dry cooler 3 is connected upstream of the coolant channel of plate heat exchanger 16, while the other end is connected downstream of the coolant channel of plate heat exchanger 16. The power battery thermal protection device includes two circuits: a refrigeration circuit and a liquid cooling circuit. The refrigeration circuit consists of compressor 12, plate heat exchanger 16, condenser 2, electronic expansion valve, and corresponding pipelines. The refrigeration circuit is filled with refrigerant. Under the driving force provided by compressor 12, the refrigerant can achieve the following flow path: compressor 12 - condenser 2 - electronic expansion valve - refrigerant channel of plate heat exchanger 16 - compressor 12, thereby realizing a refrigeration cycle. In addition, the refrigeration circuit is equipped with a frequency converter, which is electrically connected to compressor 12 to control the variable frequency operation of compressor 12. The liquid cooling circuit consists of a circulating pump 15, an expansion tank 17, a dry cooler 3, an electric heater, and corresponding piping. The coolant channel of the plate heat exchanger 16 can exchange heat with the refrigerant channel. The coolant channel of the plate heat exchanger 16 is connected to the liquid cooling circuit. The coolant from the battery cabinet of the new energy vehicle can selectively connect to the coolant channel of the dry cooler 3 and / or the coolant channel of the plate heat exchanger 16 to achieve liquid cooling circulation. The condenser 2 and the dry cooler 3 share a fan 4 to provide a stable heat exchange airflow for heat exchange with the air.

[0042] In addition to the aforementioned power battery thermal protection device, this utility model also provides a new energy locomotive that includes the aforementioned power battery thermal protection device. For the structure of other parts of the new energy locomotive, please refer to the prior art, which will not be repeated here.

[0043] The power battery thermal protection device and new energy locomotive provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core idea 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 principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A power battery thermal protection device, characterized in that, The device includes a frame (1) and a condenser (2), a dry cooler (3) and a fan (4) installed in the frame (1). One side plate of the condenser (2) and one side plate of the dry cooler (3) are arranged opposite to each other and close to each other. A gap is provided between the opposite plates of the condenser (2) and the dry cooler (3). The condenser (2) and the dry cooler (3) share the fan (4).

2. The power battery thermal protection device according to claim 1, characterized in that, The condenser (2) and the dry cooler (3) are integrated into one unit; The condenser (2) and the dry cooler (3) are rectangular plates arranged opposite to each other. The condenser (2) and the dry cooler (3) are connected together at one end of the longitudinal direction by a first positioning plate (5), and the condenser (2) and the dry cooler (3) are connected together at the other end of the longitudinal direction by a second positioning plate (6).

3. The power battery thermal protection device according to claim 2, characterized in that, The first positioning plate (5) is provided with a condenser inlet manifold (7) and a condenser outlet manifold (8) connecting the condenser (2), and the first positioning plate (5) is also provided with a dry cooler inlet manifold (9) and a dry cooler outlet manifold (10) connecting the dry cooler (3). The second positioning plate (6) is connected to the inner wall of the frame (1). The dry cooler (3) is located above the condenser (2). The inner side of the first positioning plate (5) is connected to the condenser (2) and the dry cooler (3). The dry cooler inlet manifold (9) and the dry cooler outlet manifold (10) are located on the upper part of the outer side of the first positioning plate (5). The condenser inlet manifold (7) and the condenser outlet manifold (8) are located on the lower part of the outer side of the first positioning plate (5).

4. The power battery thermal protection device according to any one of claims 1 to 3, characterized in that, It includes two condensers (2) and two dry coolers (3), one set of the condensers (2) and the dry coolers (3) is arranged on one side of the fan (4) in the transverse direction, and the other set of the condensers (2) and the dry coolers (3) is arranged on the other side of the fan (4) in the transverse direction.

5. The power battery thermal protection device according to claim 4, characterized in that, The two sets of condensers (2) and dry coolers (3) are arranged symmetrically and obliquely on both sides of the fan (4), with the inner side of the condenser (2) and dry cooler (3) in the same set being higher than the outer side.

6. The power battery thermal protection device according to claim 5, characterized in that, The frame (1) has air inlet grilles (11) on both sides in the horizontal direction. The upper plate of the dry cooler (3) faces the corresponding air inlet grille (11), and the lower plate of the condenser (2) faces the fan (4), so that the airflow passes through the dry cooler (3) and the condenser (2) in sequence.

7. The power cell thermal assurance device of claim 6, wherein, The frame (1) has a first cavity and a second cavity arranged longitudinally inside. The fan (4), two sets of condensers (2) and the dry cooler (3) are installed in the first cavity. The first cavity is also equipped with a compressor (12), a gas-liquid separator (13) and a dry filter (14). The second cavity is equipped with a circulating pump (15), a plate heat exchanger (16), an expansion tank (17) and an electrical control box (18).

8. The power battery thermal protection device according to claim 7, characterized in that, The condenser (2) is connected to the refrigerant flow channel of the compressor (12) and the plate heat exchanger (16). One end of the dry cooler (3) is connected to the upstream of the cooling liquid flow channel of the plate heat exchanger (16), and the other end of the dry cooler (3) is connected to the downstream of the cooling liquid flow channel of the plate heat exchanger (16).

9. The power cell thermal assurance device of claim 8, wherein, The fan (4) is located in the middle of the upper part of the first cavity, the two sets of condensers (2) and the dry cooler (3) are located on the horizontal sides of the upper part of the first cavity, and the compressor (12) and the dry filter (14) are located in the middle of the lower part of the first cavity, respectively on the vertical sides.

10. A new energy locomotive, comprising a vehicle body and a power battery heat guarantee device installed on the top of the vehicle body, characterized in that, The power battery thermal protection device is specifically the power battery thermal protection device as described in any one of claims 1 to 9.

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