A power supply device for a low-temperature heat pump unit

Abstract

The utility model discloses a power supply device for a low-temperature heat pump unit, including a battery module and a battery box. The battery module is installed in the battery box. The battery box includes a box body and a box cover slidably arranged in the box body. Ear seats are symmetrically arranged on the end faces of two opposite side walls of the box body. Ear holes are arranged on the ear seats. Removable limit beams are arranged in the ear holes. A pressure relief hole penetrating the side wall of the box body is arranged on the inner wall of the box body near the open end. The power supply device for a low-temperature heat pump unit described in the utility model is provided with a pressure relief structure on the battery box. When the battery module is in danger and a certain pressure is reached in the box body, the high-pressure gas in the box body can be discharged from the pressure relief hole to reduce the pressure in the box body, prevent the box body from exploding, and protect the safety of the low-temperature heat pump.

Description

Technical Field

[0001] The utility model relates to the technical field of low-temperature heat pumps, and more specifically, to a power supply device for a low-temperature heat pump unit. Background Art

[0002] When the low-temperature heat pump is working in a low-temperature environment, it will stop working in the event of a power outage, which will cause the water system and the heat pump unit to freeze. Severe freezing will cause damage to the water system and the heat pump unit. Therefore, the low-temperature heat pump needs to be equipped with a UPS power supply to ensure that the low-temperature heat pump system can still operate normally for a certain period of time when the power is off to prevent the water system and the heat pump unit from freezing. The UPS power supply includes a battery module. When the battery module is damaged, leaked, or has an internal short circuit, the battery temperature will rise sharply, causing the battery module to discharge high-temperature gas, catch fire, burn, or even explode.

[0003] Chinese patent document CN 220544116 U discloses a reinforced structure and explosion-proof battery housing. The explosion-proof battery housing in the above technical solution does not have a pressure relief device. When the pressure inside the battery explosion-proof housing is too high, the battery explosion-proof housing is at risk of bursting, which will damage the low-temperature heat pump system when the battery module is in danger.

[0004] Therefore, it is necessary to propose a power supply device for a low-temperature heat pump unit to solve the problems existing in the prior art. Utility Model Content

[0005] A series of simplified concepts are introduced in the utility model content section, which will be further described in detail in the detailed implementation section. The utility model content section of the utility model does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0006] To solve the above problems, the utility model provides a power supply device for a low-temperature heat pump unit, including a battery module and a battery box, the battery module is installed in the battery box, the battery box includes a box body with an opening at the upper end and a box cover slidably arranged in the box body, ear seats are symmetrically arranged on the end surfaces of two opposite side walls of the box body, ear holes are opened on the ear seats, and limiting beams are detachably arranged in the ear holes, and a pressure relief hole penetrating the side wall of the box body is opened on the inner wall of the box body near the opening end; the box cover is located below the pressure relief hole.

[0007] Preferably, a connecting ring is fixedly provided on the upper end surface of the box cover;

[0008] A guide hole is provided at the center of the limiting beam, a guide column is slidably arranged in the guide hole, one end of the guide column is threadedly connected to the connecting ring, a spring is sleeved on the guide column, the lower end of the spring contacts the upper end surface of the connecting ring, and the upper end of the spring contacts the lower end surface of the limiting beam.

[0009] Preferably, the pressure relief hole is an L-shaped hole.

[0010] Preferably, a vertically arranged slide groove is relatively provided on the inner wall of the box body, and a sliding block is provided at a position on the box cover corresponding to the slide groove, and the sliding block is slidably arranged in the slide groove.

[0011] Preferably, the box body is a rectangular structure, and at least two longitudinal beams are fixedly arranged on the inner side of each side wall of the box body, and the length of the longitudinal beams is smaller than the height of the inner cavity of the box body.

[0012] Preferably, a sealing groove is provided around the side wall of the box cover, and a sealing ring is arranged in the sealing groove.

[0013] Preferably, the power supply device further comprises a charging interface, and the charging interface is electrically connected to the battery module.

[0014] Preferably, a filter screen is fixedly arranged at the end of the pressure relief hole.

[0015] Preferably, the box body is made of high-strength steel or carbon fiber material.

[0016] Preferably, a fireproof and heat-insulating layer is provided on the inner wall of the box.

[0017] Preferably, a fixed structure is provided on one side of the box body for fixing to the outer wall on the water side of the low-temperature heat pump unit, a detour pipeline is provided inside, and an inlet and an outlet of the detour pipeline are provided on the outside of the box body, and the inlet and outlet are respectively connected to the water side circulation pipeline.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] The power supply device of the low-temperature heat pump unit described in the utility model is provided with a pressure relief structure on the battery box. When the battery module is in danger and the pressure in the box reaches a certain level, the high-pressure gas in the box can be discharged from the pressure relief hole to reduce the pressure in the box, prevent the box from exploding, and protect the safety of the low-temperature heat pump. Since it is used on the low-temperature heat pump unit, the working environment of the low-temperature heat pump unit is -20℃ to 50℃, and the ambient temperature will have an adverse effect on the power supply. Therefore, a detour pipeline is provided to be connected to the pipeline of the circulating water pump of the low-temperature heat pump unit and the box is fixed to the outer wall on the water side through a fixed structure to ensure the working environment of the power supply.

[0020] The power supply device of the low-temperature heat pump unit described in the utility model, other advantages, objectives and features of the utility model will be partially reflected through the following description, and partly will also be understood by technicians in this field through research and practice of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 It is a structural schematic diagram of the power supply device of the low-temperature heat pump unit disclosed in the utility model;

[0023] Figure 2 It is a structural schematic diagram of the power supply assembly disclosed in the utility model;

[0024] Figure 3 It is a cross-sectional view of the pressure relief hole disclosed in the utility model;

[0025] Figure 4 It is a structural schematic diagram of the box disclosed in the utility model;

[0026] Figure 5 It is a structural schematic diagram of the box cover disclosed in the utility model;

[0027] Figure 6 It is a schematic structural diagram of a cross-section of the box cover disclosed in the utility model. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0029] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0030] like Figure 1-6 As shown, a power supply device for a low-temperature heat pump unit includes a battery module and a battery box 3. The battery module is installed in the battery box 3. The battery box 3 includes a box body 4 with an opening at the upper end and a box cover 5 slidably arranged in the box body 4. Ear seats 6 are symmetrically arranged on the end surfaces of two opposite side walls of the box body 4. Ear holes 7 are arranged on the ear seats 6. A limiting beam 8 is detachably arranged in the ear hole 7. A pressure relief hole 9 that penetrates the side wall of the box body 4 is arranged on the inner wall of the box body 4 near the open end; the box cover 5 is located below the pressure relief hole 9.

[0031] A connecting ring 10 is fixedly arranged on the upper end surface of the box cover 5;

[0032] A guide hole 11 is provided at the center of the limiting beam 8, and a guide column 12 is slidably arranged in the guide hole 11. One end of the guide column 12 is threadedly connected to the connecting ring 10. A spring 13 is sleeved on the guide column 12. The lower end of the spring 13 contacts the upper end surface of the connecting ring 10, and the upper end of the spring 13 contacts the lower end surface of the limiting beam 8.

[0033] The pressure relief hole 9 is an L-shaped hole.

[0034] The working principle of the above technical solution is as follows: the power supply device is electrically connected to the electronic control system of the heat pump unit 1, including a battery module and a battery box 3. The battery box 3 is used to accommodate the battery module. The battery box 3 includes a box body 4 with an upper opening and a box cover 5. The battery module is installed in the battery box 3, and the box cover 5 is pressed on the top of the battery module to fix the battery module. A limiting beam 8 is inserted into the ear holes 7 of the two ear seats 6 of the battery box 3, and a guide hole 11 is provided in the center of the limiting beam 8. A guide column 12 is slidably arranged in the guide hole 11, and one end of the guide column 12 is threadedly connected to the connecting ring 10. A spring 13 is sleeved on the guide column 12, and the spring 13 provides elastic force. When the battery module in the battery box 3 leaks and produces high-temperature gas, burns or explodes, pressure is applied to the box cover 5 to limit the explosion and reduce the power of the explosion. The box cover 5 compresses the spring 13 and moves upward. When the lower edge position of the box cover 5 exceeds the lower edge position of the pressure relief hole 9, the high-pressure gas in the box body 4 can be discharged from the pressure relief hole, and the L-shaped pressure relief hole can prevent flames from spraying out of the pressure relief hole.

[0035] Beneficial effects of the above technical solution:

[0036] The power supply device of the low-temperature heat pump unit described in the utility model is provided with a pressure relief structure on the battery box. When the battery module is in danger and the pressure in the box reaches a certain level, the high-pressure gas in the box can be discharged from the pressure relief hole to reduce the pressure in the box, prevent the box from exploding, and protect the safety of the low-temperature heat pump.

[0037] In one embodiment, a vertically arranged slide groove 14 is relatively provided on the inner wall of the box body 4 , and a sliding block 15 is provided at a position corresponding to the slide groove 14 on the box cover 5 , and the sliding block 15 is slidably arranged in the slide groove 14 .

[0038] The working principle of the above technical solution is as follows: a vertically arranged slide groove 14 is relatively provided on the inner wall of the box body 4, a slider 15 is provided at a position corresponding to the slide groove 14 on the box cover 5, and the slider 15 is slidably arranged in the slide groove 14 so that the box cover maintains balance when sliding in the box body.

[0039] In one embodiment, the box body 4 is a rectangular structure, and at least two longitudinal beams 16 are fixedly disposed on the inner side of each side wall of the box body 4 . The length of the longitudinal beam 16 is less than the height of the inner cavity of the box body 4 .

[0040] The working principle of the above technical solution is as follows: when the battery module is installed inside the box body 4, the outer wall of the battery module is in contact with the longitudinal beam, and the longitudinal beam plays the role of fixing the battery module. A pressure relief channel is formed between the box body 4 and the battery module between the longitudinal beams. When the battery module is in danger, the gas in the box body 4 can be discharged upward through the pressure relief channel.

[0041] The height of the longitudinal beam 16 is less than the height of the inner cavity of the box body 4, leaving space for the box cover 5 to slide up and down. When the battery module is installed inside the box body 4, the upper end of the battery module is higher than the upper end surface of the longitudinal beam.

[0042] In one embodiment, a sealing groove 17 is formed around the side wall of the box cover 5 , and a sealing ring 18 is disposed in the sealing groove 17 .

[0043] The working principle of the above technical solution is as follows: a sealing groove 17 is provided around the side wall of the box cover 5, and a sealing ring 18 is arranged in the sealing groove 17 to prevent gas or flame from being discharged from around the box cover when a danger occurs to the battery module. The sealing ring can be made of a polytetrafluoroethylene plate material with a flame retardant added thereto, and the flame retardant can be an aluminum oxide flame retardant.

[0044] In one embodiment, a charging interface is also included, and the charging interface is electrically connected to the battery module.

[0045] The working principle of the above technical solution is: the charging interface is used to charge the battery module, and the battery module is charged after the battery module is used or not used for a long time. The charging interface is embedded on the outside of the battery box.

[0046] In one embodiment, a filter screen is fixedly disposed at the end of the pressure relief hole 9 .

[0047] The working principle of the above technical solution is: a filter is fixedly arranged at the end of the pressure relief hole 9 to prevent the debris of the battery module from being sprayed to the outside of the box when the battery module in the box is in danger.

[0048] In one embodiment, the box body 4 is made of high-strength steel or carbon fiber material.

[0049] The working principle of the above technical solution is: the box body 4 is made of high-strength steel or carbon fiber material, and when a dangerous situation occurs in the battery module, it can withstand a certain impact force to prevent damage to the low-temperature heat pump unit.

[0050] In one embodiment, a fireproof and heat-insulating layer is provided on the inner wall of the box body 4 .

[0051] The working principle of the above technical solution is: a fireproof and heat-insulating layer is set on the inner wall of the box body 4, and the fireproof and heat-insulating layer can be made of glass fiber fireproof cloth or fire-retardant paint. The glass fiber fireproof cloth can be bonded to the inner wall of the box body 4, and the fire-retardant paint can be directly sprayed on the inner wall of the box body 4.

[0052] In one embodiment, a fixed structure is provided on one side of the box body for fixing to the outer wall on the water side of the low-temperature heat pump unit, a detour pipeline is provided inside, and an inlet and an outlet of the detour pipeline are provided on the outside of the box body, and the inlet and outlet are respectively connected to the water side circulation pipeline.

[0053] The fixed structure fixes the power supply device to the outer wall of the water side of the low-temperature heat pump unit, and is embedded in the insulation layer of the outer wall, so that the box can be close to the water side of the low-temperature heat pump unit to absorb the water side temperature; in addition, by connecting the detour pipeline to the circulating water pump, the circulating water pump can be used to circulate the water on the water side to further absorb heat to ensure the performance of the power supply device in a low-temperature environment. The fixed structure can be specifically formed in the form of hook holes, for example, three hook holes distributed in a triangular shape are used to cooperate with corresponding triangular hooks set on the outer wall of the water side.

[0054] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0055] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A power supply device for a low-temperature heat pump unit, for supplying power to a low-temperature heat pump unit (1), characterized in that: include: A battery module and a battery box (3), wherein the battery module is installed in the battery box (3); The battery box (3) comprises a box body (4) with an opening at the upper end and a box cover (5) slidably arranged in the box body (4); ear seats (6) are symmetrically arranged on the end surfaces of two opposite side walls of the box body (4); ear holes (7) are arranged on the ear seats (6); a limit beam (8) is detachably arranged in the ear holes (7); a pressure relief hole (9) penetrating the side wall of the box body (4) is arranged on the inner wall of the box body (4) near the opening end; and the box cover (5) is located below the pressure relief hole (9).

2. The power supply device of the low-temperature heat pump unit according to claim 1, characterized in that: A connecting ring (10) is fixedly arranged on the upper end surface of the box cover (5); A guide hole (11) is provided at the center of the limiting beam (8), a guide column (12) is slidably arranged in the guide hole (11), one end of the guide column (12) is threadedly connected to the connecting ring (10), a spring (13) is sleeved on the guide column (12), the lower end of the spring (13) contacts the upper end surface of the connecting ring (10), and the upper end of the spring (13) contacts the lower end surface of the limiting beam (8).

3. The power supply device of the low-temperature heat pump unit according to claim 2, characterized in that: The pressure relief hole (9) is an L-shaped hole.

4. The power supply device of the low-temperature heat pump unit according to claim 1, characterized in that: A vertically arranged slide groove (14) is relatively provided on the inner wall of the box body (4), a sliding block (15) is arranged at a position corresponding to the slide groove (14) on the box cover (5), and the sliding block (15) is slidably arranged in the slide groove (14).

5. The power supply device of the low-temperature heat pump unit according to claim 4, characterized in that: The box body (4) is a rectangular structure, and at least two longitudinal beams (16) are fixedly arranged on the inner side of each side wall of the box body (4), and the length of the longitudinal beams (16) is less than the height of the inner cavity of the box body (4).

6. The power supply device of the low-temperature heat pump unit according to claim 5, characterized in that: A sealing groove (17) is provided around the side wall of the box cover (5), and a sealing ring (18) is arranged in the sealing groove (17).

7. The power supply device of the low-temperature heat pump unit according to claim 1, characterized in that: It also includes a charging interface, which is electrically connected to the battery module.

8. The power supply device of the low-temperature heat pump unit according to claim 1, characterized in that: A filter screen is fixedly arranged at the end of the pressure relief hole (9).

9. The power supply device of the low-temperature heat pump unit according to claim 1, characterized in that: The box body (4) is made of high-strength steel or carbon fiber material.

10. The power supply device of the low-temperature heat pump unit according to claim 1, characterized in that: A fixing structure is arranged on one side of the box body for fixing to the outer wall of the water side of the low-temperature heat pump unit. A detour pipeline is arranged inside, and an inlet and an outlet of the detour pipeline are arranged on the outside of the box body. The inlet and the outlet are respectively connected to the water side circulation pipeline.

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