Thermal management system of PACK battery box

Abstract

The utility model relates to the technical field of thermal management, in particular to a thermal management system of a PACK battery box. According to the technical scheme, the heat exchange assembly comprises a temperature sensor, an electric push rod and a heat insulation block, the temperature sensor is electrically connected with the electric push rod, the end of the electric push rod is fixedly connected with the heat insulation block, and the side, away from the electric push rod, of the heat insulation block is fixedly connected with a radiator. When the temperature of the battery inner box is too high and the electric push rod completely extends out, the radiator is positioned outside the battery outer box, and heat exchange is performed on the battery inner box through the radiator, so that the temperature of the battery inner box is reduced; when the temperature of the inner battery box is too low and the electric push rod is completely contracted, the radiator is located in the outer battery box and emits heat in the outer battery box, the temperature of the environment where the inner battery box is located is increased through air circulation, and the two closing plates are combined to close the outer battery box for heat preservation.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal management, in particular to a thermal management system for a PACK battery box. Background Art

[0002] The PACK battery box is a battery module, which includes a group of batteries consisting of several single cells, a box, a battery management system and a thermal management system. The PACK battery box has high reliability, good stability, can continuously exert high performance, and has high capacity, high energy density and safety. The thermal management system in the PACK battery box dissipates heat from the battery, so that the battery can operate better and improve the safety of the PACK battery box.

[0003] The thermal management system in the prior art senses the temperature inside the PACK battery box and uses heat dissipation, heating, insulation and other means to maintain the temperature inside the PACK battery box within an appropriate range, making the PACK battery box more stable and safe during operation.

[0004] However, when this thermal management system is in use, a PACK battery box is required to power the thermal management system. The power supply is used to activate the heat dissipation and heating functions, which consumes the power of the PACK battery box and affects the power supply time of the PACK battery box. Utility Model Content

[0005] The utility model aims to solve the problem in the background technology that the thermal management system consumes a lot of power of the PACK battery box and affects the power supply time, and proposes a thermal management system for the PACK battery box.

[0006] The technical solution of the utility model: a thermal management system of a PACK battery box, comprising a battery outer box, a radiator is fixedly installed inside the battery outer box, a radiator is slidably connected to the left inner wall of the battery outer box, a heat exchange plate is fixedly installed on the side of the radiator, a battery inner box is fixedly installed inside the battery outer box, and the heat exchange plate is in contact with the battery inner box;

[0007] The heat exchange assembly comprises a temperature sensor, an electric push rod and a heat insulation block, wherein the temperature sensor is electrically connected to the electric push rod, an end of the electric push rod is fixedly connected to the heat insulation block, and a side of the heat insulation block away from the electric push rod is fixedly connected to the radiator;

[0008] The temperature sensor is fixedly installed on the right side of the battery inner box, a protruding opening is opened on the left side of the battery outer box, the heat insulation block slides at the protruding opening, and a cleaning component is arranged inside the battery outer box.

[0009] Optionally, linkage rods are hinged on both the upper and lower sides of the insulation block, and a closing plate is hinged on the end of the linkage rod, and the closing plate slides on the left inner wall of the battery outer box.

[0010] Optionally, the two closing plates are combined to form a heat-insulating plate, the heat-insulating plate covers the protruding opening, and there is a distance between the closing plate and the heat-insulating block.

[0011] Optionally, the heat exchange plate passes through the insulation block, and the cross-sectional area of ​​the radiator is smaller than the cross-sectional area of ​​the insulation block.

[0012] Optionally, when the electric push rod is fully extended, the radiator is located outside the battery outer box, and the two closing plates are separated; when the electric push rod is fully retracted, the radiator is located inside the battery outer box, and the two closing plates are merged.

[0013] Optionally, the cleaning assembly includes a brush and a guide rail, the brush is fixedly mounted on a side of the closing plate, the guide rail is fixedly mounted on a left inner wall of the battery outer box, and the side wall of the brush is in contact with the radiator.

[0014] Optionally, a heat insulation plate is fixedly installed on the left side of the battery inner box, the heat insulation plate isolates the radiator and the battery inner box, and the other end of the electric push rod is fixedly connected to the heat insulation plate.

[0015] Optionally, there is a gap between the battery inner box and the battery outer box, and air circulates around the battery inner box at the gap. A slide groove is opened on the left side of the battery inner box, and the heat exchange plate is inserted into the slide groove.

[0016] Compared with the prior art, the utility model has the following beneficial technical effects:

[0017] According to the utility model, when the temperature of the battery inner box is too high, the electric push rod is fully extended, the radiator is located outside the battery outer box, and heat is exchanged with the battery inner box through the radiator to reduce the temperature of the battery inner box; when the temperature of the battery inner box is too low, the electric push rod is fully retracted, the radiator is located inside the battery outer box, the radiator generates heat inside the battery outer box, the ambient temperature of the battery inner box is increased through air circulation, and the two sealing plates are combined to seal the battery outer box for heat preservation.

[0018] Furthermore, when the two closing plates move toward each other, the brushes on their sides contact the radiator and clean the outside of the radiator to prevent dust from adhering to the surface of the radiator, which would cause the heat dissipation effect of the radiator to deteriorate and affect the operation of the battery inner box. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the overall structure of an embodiment of the utility model is given;

[0020] Figure 2 A schematic diagram of the battery inner box structure of an embodiment of the utility model is given;

[0021] Figure 3 A schematic cross-sectional view of a battery outer box structure according to an embodiment of the utility model is given;

[0022] Figure 4 Given Figure 3 A magnified schematic diagram of the brush structure of part A.

[0023] Figure numerals: 1. battery outer box; 2. radiator; 3. heat exchange plate; 4. battery inner box; 5. slide slot; 6. heat exchange assembly; 61. temperature sensor; 62. electric push rod; 63. insulation block; 64. linkage rod; 65. closing plate; 66. extension port; 7. cleaning assembly; 71. brush; 72. guide rail; 73. insulation board. DETAILED DESCRIPTION

[0024] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0025] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0026] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0027] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0029] This embodiment proposes a thermal management system for a PACK battery box, such as Figure 1 As shown, it includes a battery outer box 1, in which a battery inner box 4 is fixedly installed. There is a gap between the battery inner box 4 and the battery outer box 1, and air circulates around the battery inner box 4 at the gap. The air circulation makes the temperature of each position inside the battery outer box 1 the same.

[0030] A radiator 2 is fixedly installed inside the battery outer box 1, and the radiator 2 is slidably connected to the left inner wall of the battery outer box 1. A heat exchange plate 3 is fixedly installed on the side of the radiator 2. A slide groove 5 is opened on the left side of the battery inner box 4. The heat exchange plate 3 is inserted into the slide groove 5. Heat exchange is carried out through the contact between the heat exchange plate 3 and the battery inner box 4. The heat is transferred to the radiator 2 through the heat exchange plate 3, and the radiator 2 is used to dissipate heat.

[0031] like Figure 3 and 4 As shown, it also includes a heat exchange component 6, which includes a temperature sensor 61, an electric push rod 62 and an insulation block 63. The temperature sensor 61 is electrically connected to the electric push rod 62 through a controller, the end of the electric push rod 62 is fixedly connected to the insulation block 63, the side of the insulation block 63 away from the electric push rod 62 is fixedly connected to the radiator 2, and the temperature sensor 61 is fixedly installed on the right side of the battery inner box 4.

[0032] The temperature sensor 61 senses the temperature of the battery inner box 4. When the temperature of the battery inner box 4 is too high, the temperature sensor 61 fully extends the electric push rod 62 through the controller, and the electric push rod 62 pushes the radiator 2 out of the battery outer box 1 through the insulation block 63, so that the radiator 2 dissipates heat outside the battery outer box 1; when the temperature of the battery inner box 4 is too low, the temperature sensor 61 fully retracts the electric push rod 62 through the controller, and the electric push rod 62 pulls the radiator 2 from the outside of the battery outer box 1 through the insulation block 63, so that the radiator 2 dissipates heat inside the battery outer box 1, and the heat emitted by the radiator 2 is used to heat the air and circulate around the battery inner box 4 to increase the temperature of the battery inner box 4.

[0033] like Figure 4As shown, a protruding opening 66 is provided on the left side of the battery outer box 1, the heat insulating block 63 slides at the protruding opening 66, the heat exchange sheet 3 penetrates the heat insulating block 63, and the cross-sectional area of ​​the radiator 2 is smaller than the cross-sectional area of ​​the heat insulating block 63. This prevents the radiator 2 from directly contacting the battery outer box 1 and causing the battery outer box 1 to deform due to heat.

[0034] The upper and lower sides of the heat insulation block 63 are both hinged with linkage rods 64, and the ends of the linkage rods 64 are hinged with closing plates 65, which slide on the left inner wall of the battery outer box 1. When the radiator 2 is put into the battery outer box 1, the two closing plates 65 move toward each other and merge to form a heat preservation plate, which covers the extension 66 and closes the battery outer box 1, so that the heat emitted by the radiator 2 is retained inside the battery outer box 1, avoiding low ambient temperature when the battery inner box 4 is running. There is a gap between the closing plate 65 and the heat insulation block 63. When the radiator 2 is put into the battery outer box 1, the closing plate 65 contacts the radiator 2 and is stuck to each other.

[0035] In this embodiment, when the temperature of the battery inner box 4 is too high, the electric push rod 62 is fully extended, and the radiator 2 is located outside the battery outer box 1, and heat is exchanged with the battery inner box 4 through the radiator 2 to reduce the temperature of the battery inner box 4; when the temperature of the battery inner box 4 is too low, the electric push rod 62 is fully retracted, and the radiator 2 is located inside the battery outer box 1, and the radiator 2 generates heat inside the battery outer box 1, and the ambient temperature of the battery inner box 4 is increased through air circulation, and the two closing plates 65 are combined to close the battery outer box 1 for insulation. Example

[0036] Based on Example 1, this example proposes a thermal management system for a PACK battery box, such as Figure 2-4 As shown, a cleaning assembly 7 is provided inside the battery outer box 1, and the cleaning assembly 7 includes a brush 71 and a guide rail 72. The brush 71 is fixedly mounted on the side of the closing plate 65, and the guide rail 72 is fixedly mounted on the left inner wall of the battery outer box 1, and the side wall of the brush 71 contacts the radiator 2. When the closing plate 65 moves, the brush 71 cleans the outside of the radiator 2, and the guide rail 72 guides the moving direction of the closing plate 65.

[0037] A heat insulation board 73 is fixedly installed on the left side of the battery inner box 4, and the heat insulation board 73 isolates the radiator 2 and the battery inner box 4. The other end of the electric push rod 62 is fixedly connected to the heat insulation board 73. The heat insulation board 73 prevents the radiator 2 from being too close to the radiator 2, resulting in different temperatures on both sides of the battery inner box 4.

[0038] In this embodiment, when the two closing plates 65 move toward each other, the brushes 71 on their sides contact the radiator 2 and clean the outside of the radiator 2 to prevent dust from adhering to the surface of the radiator 2, which would cause the heat dissipation effect of the radiator 2 to deteriorate and affect the operation of the battery inner box 4.

[0039] The above-mentioned specific embodiments are only several optional embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A thermal management system for a PACK battery box, characterized in that: include: A battery outer box (1), wherein a radiator (2) is fixedly mounted inside the battery outer box (1), the left inner wall of the battery outer box (1) is slidably connected to the radiator (2), a heat exchange plate (3) is fixedly mounted on the side of the radiator (2), and a battery inner box (4) is fixedly mounted inside the battery outer box (1), and the heat exchange plate (3) is in contact with the battery inner box (4); A heat exchange assembly (6), comprising a temperature sensor (61), an electric push rod (62) and a heat insulation block (63), wherein the temperature sensor (61) is electrically connected to the electric push rod (62), an end of the electric push rod (62) is fixedly connected to the heat insulation block (63), and a side of the heat insulation block (63) away from the electric push rod (62) is fixedly connected to the radiator (2); The temperature sensor (61) is fixedly mounted on the right side of the battery inner box (4); a protruding opening (66) is provided on the left side of the battery outer box (1); the heat insulating block (63) slides at the protruding opening (66); and a cleaning assembly (7) is provided inside the battery outer box (1).

2. A thermal management system for a PACK battery box according to claim 1, characterized in that: The upper and lower sides of the heat insulation block (63) are both hingedly connected with linkage rods (64), and the ends of the linkage rods (64) are hingedly connected with a closing plate (65), and the closing plate (65) slides on the left inner wall of the battery outer box (1).

3. The thermal management system of a PACK battery box according to claim 2, characterized in that: The two closing plates (65) are combined to form a heat-insulating plate, which covers the protruding opening (66), and there is a distance between the closing plate (65) and the heat-insulating block (63).

4. The thermal management system of a PACK battery box according to claim 1, characterized in that: The heat exchange plate (3) passes through the heat insulation block (63), and the cross-sectional area of ​​the radiator (2) is smaller than the cross-sectional area of ​​the heat insulation block (63).

5. The thermal management system of a PACK battery box according to claim 3, characterized in that: When the electric push rod (62) is fully extended, the radiator (2) is located outside the battery outer box (1), and the two closing plates (65) are separated; when the electric push rod (62) is fully retracted, the radiator (2) is located inside the battery outer box (1), and the two closing plates (65) are combined.

6. The thermal management system of a PACK battery box according to claim 1, characterized in that: The cleaning assembly (7) comprises a brush (71) and a guide rail (72); the brush (71) is fixedly mounted on the side of the closing plate (65); the guide rail (72) is fixedly mounted on the left inner wall of the battery outer box (1); and the side wall of the brush (71) is in contact with the radiator (2).

7. A thermal management system for a PACK battery box according to claim 6, characterized in that: A heat insulation board (73) is fixedly mounted on the left side of the battery inner box (4), the heat insulation board (73) isolating the radiator (2) and the battery inner box (4), and the other end of the electric push rod (62) is fixedly connected to the heat insulation board (73).

8. The thermal management system of a PACK battery box according to claim 1, characterized in that: There is a gap between the battery inner box (4) and the battery outer box (1), and air circulates around the battery inner box (4) at the gap. A slide groove (5) is provided on the left side of the battery inner box (4), and the heat exchange plate (3) is inserted into the slide groove (5).

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