High-efficiency temperature control type power battery box for new energy automobile

Abstract

The invention discloses an efficient temperature control type power battery box for a new energy automobile, which comprises a battery box body, a heat insulation box body is arranged outside the battery box body, heat exchange pipes are arranged on each surface of the outer side of the battery box body, and an outer sleeve shell is arranged outside the heat insulation box body; a heat insulation layer is arranged between each surface of the outer side of the heat insulation box body and the inner wall of each outer sleeve shell, a hollow outer heat dissipation plate is arranged on one surface of each outer sleeve shell, and a heat dissipation pipe arranged in a snake shape is arranged in each outer heat dissipation plate; the device further comprises a circulating pump, the two ends of the circulating pump are communicated with a circulating liquid inlet pipe and a circulating liquid outlet pipe respectively, one end of the radiating pipe is communicated with a liquid outlet header pipe communicated with one end of each heat exchange pipe, the other end of the radiating pipe is communicated with the circulating liquid inlet pipe, and the circulating liquid outlet pipe is communicated with a spiral heat exchange pipe. The free end of the spiral heat exchange pipe is communicated with a liquid inlet header pipe communicated with the other end of each heat exchange pipe. The influence of the external environment on the battery is reduced through heat preservation measures, so that the temperature of the battery is regulated and controlled with low energy consumption.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy batteries, and in particular to a high-efficiency temperature-controlled power battery box for new energy vehicles. Background Art

[0002] With the global emphasis on environmental protection and sustainable development, new energy vehicles (NEVs) have experienced rapid growth as an alternative to traditional thermal oil-powered vehicles. Power batteries are a core component of NEVs, impacting not only their range but also their safety and service life. However, effectively managing battery operating temperature under varying environmental conditions has become a key challenge.

[0003] In existing technology, the power batteries of new energy vehicles are typically installed in specially designed battery boxes to protect them from external physical damage. However, the design of these battery boxes often focuses on mechanical protection, with relatively little consideration given to temperature regulation. Batteries are particularly susceptible to external temperature fluctuations in extreme climates: when the external environment is high, the internal temperature of the battery rises accordingly; and in extremely cold environments, the battery temperature also drops significantly. These temperature fluctuations caused by changes in the external environment pose a serious threat to battery performance, lifespan, and even safety.

[0004] Due to the lack of effective thermal insulation measures, existing power battery systems rely on additional energy consumption to maintain the battery within a suitable operating temperature range. For example, heating devices are activated to preheat the battery in low-temperature environments, or cooling systems are used to reduce battery temperature in high-temperature conditions. These processes undoubtedly increase vehicle energy consumption, reduce the range of new energy vehicles, and indirectly increase user costs. Summary of the Invention

[0005] The purpose of the present invention is to provide a high-efficiency temperature-controlled power battery box for new energy vehicles, which reduces the impact of the battery on the external environment through insulation measures, so as to achieve low-energy consumption and control of battery temperature.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: a high-efficiency temperature-controlled power battery box for new energy vehicles, comprising a battery box body, an insulating box body is arranged outside the battery box body, a plurality of heat exchange fins are arranged between each side of the outer side of the battery box body and the inner wall of the insulating box body, each side of the outer side of the battery box body is provided with a heat exchange tube serpentinely wound around the corresponding heat exchange fins, an outer shell body is arranged outside the insulating box body, a heat insulation layer is arranged between each side of the outer side of the insulating box body and the inner walls of most outer shell bodies, a hollow outer heat dissipation plate is provided on one side of the outer shell body, a heat dissipation pipe arranged in a serpentine shape is arranged in the outer heat dissipation plate, and the inner wall of the outer heat dissipation plate protrudes outward to form a serpentine heat dissipation protrusion for accommodating the heat dissipation pipe;

[0007] It also includes a circulation pump, the inlet end of the circulation pump is connected to a circulation liquid inlet pipe, the outlet end of the circulation pump is connected to a circulation liquid outlet pipe, one end of the heat dissipation pipe is connected to a liquid outlet main pipe connected to and in communication with one end of each heat exchange pipe, the other end of the heat dissipation pipe is connected to and in communication with the circulation liquid inlet pipe, the free end of the circulation liquid outlet pipe is connected to a spiral heat exchange pipe, and the free end of the spiral heat exchange pipe is connected to a liquid inlet main pipe connected to and in communication with the other end of each heat exchange pipe;

[0008] It also includes a compression refrigerator, wherein the evaporator of the compression refrigerator is covered with the spiral heat exchange tube, and an electric heating tube is arranged inside the spiral heat exchange tube.

[0009] By adopting the above technical solution, when the battery temperature is too high, the circulation pump works to make the internal thermal oil pass through the heat exchange tube, the liquid outlet pipe, the heat dissipation pipe, the circulation inlet pipe, the circulation pump, the circulation outlet pipe, the spiral heat exchange tube, and the liquid inlet pipe in sequence, and then circulate into the heat exchange tube. During the driving process of the vehicle, there is a high-speed airflow under the chassis. When the heat exchange tube carries the high temperature generated by the battery into the heat dissipation pipe, the airflow passes through the serpentine heat dissipation protrusion to dissipate the heat of the thermal oil in the heat dissipation pipe. Through continuous circulation, the temperature of the battery is gradually reduced.

[0010] When air cooling is insufficient to cool the battery, the compression cooler starts working, causing the evaporator to generate low temperature to quickly cool the thermal oil in the spiral heat exchange tube. The oil is then circulated to the heat exchange tube through the circulation pump, rapidly cooling the battery. When the temperature drops to a certain level, the compression cooler stops working and switches to air cooling again.

[0011] In the severe winter climate, the battery temperature is too low. At this time, the circulation pump works to circulate the heat transfer oil through the spiral heat exchange tube. The electric heating tube works to heat the heat transfer oil in the spiral heat exchange tube. The heated heat transfer oil circulates into the heat exchange tube to heat the battery, thereby increasing the battery temperature.

[0012] After using a compression refrigerator to cool down or an electric heating tube to heat up, the circulation pump needs to stop working intermittently until the battery temperature is too high or too low. Under the protection of the thermal insulation layer, the external temperature will not easily affect the battery temperature. The battery can maintain a healthy temperature for a long time, reducing the energy consumption of the circulation pump, compression refrigerator and electric heating tube.

[0013] The present invention is further configured such that a temperature sensor is provided on the outer wall of the battery box.

[0014] The present invention is further configured as follows: the battery box has an opening on one side away from the external heat dissipation plate; the open end of the battery box is detachably connected to a battery sealing cover; and a plurality of heat exchange fins are provided on the outer side of the battery sealing cover.

[0015] The present invention is further configured as follows: the insulation box body and the outer shell body are both open on one side away from the external heat dissipation plate, the open ends of the insulation box body and the outer shell body are detachably connected with a hollow insulation cover, and an insulation layer is provided inside the insulation cover.

[0016] The present invention is further configured such that: the heat insulation layer is aerogel.

[0017] The present invention is further configured such that: the heat exchange tube, the heat dissipation tube and the spiral heat exchange tube are all copper tubes.

[0018] The present invention is further configured as follows: a plurality of strip-shaped heat dissipation fins are arranged outwardly from the outer side of the serpentine heat dissipation protrusion.

[0019] The present invention is further configured as follows: the evaporator is spirally sheathed with the spiral heat exchange tube.

[0020] In summary, the present invention has the following beneficial effects:

[0021] First, the power battery box of the present invention is not only equipped with a thermal oil temperature control system that can intelligently regulate the battery temperature, but also has a fully covered thermal insulation layer. The thermal insulation layer can effectively isolate the internal battery from the influence of the external ambient temperature, allowing the battery to maintain a healthy temperature for a long time, reducing the energy consumption of the circulation pump, compression refrigerator and electric heating tube.

[0022] Secondly, the serpentine heat dissipation protrusions and strip heat sinks extend out from the lower side of the car chassis. When the vehicle is moving, the airflow generated by the vehicle can be used to continuously cool the battery. The battery can be cooled by only using a circulation pump to continuously circulate the thermal oil to the external heat sink, which can effectively reduce the energy consumption of the compression refrigerator when cooling the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 is an exploded view of the present invention;

[0025] Figure 3 Used to show the strip heat sink at the bottom of the external heat sink;

[0026] Figure 4 Used to demonstrate the connection between the battery box and the heat exchange tube;

[0027] Figure 5 Used to display the insulation layer outside the insulation box;

[0028] Figure 6 Used to show the insulation layer inside the thermal cover;

[0029] Figure 7 Used to display the heat pipes inside the external heat sink.

[0030] In the figure: 1. Battery case; 11. Temperature sensor; 12. Battery sealing cover; 13. Heat exchange fins; 2. Heat exchange tubes; 21. Liquid outlet pipe; 22. Spiral heat exchange tubes; 23. Liquid inlet pipe; 3. Insulated case; 4. Outer shell; 41. External heat sink; 42. Serpentine heat dissipation protrusion; 43. Strip heat sink; 5. Insulation cover; 6. Insulation layer; 7. Heat dissipation pipe; 8. Circulation pump; 81. Circulation liquid inlet pipe; 82. Circulation liquid outlet pipe; 9. Compression refrigerator; 91. Evaporator; 10. Electric heating tube. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below with reference to the accompanying drawings.

[0032] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", "front", "back", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0033] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0034] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections, direct connections, indirect connections via an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0035] Example, see Figure 1-7 A high-efficiency temperature-controlled power battery box for new energy vehicles includes a battery box 1. A temperature sensor 11 is provided on the outer wall of the battery box 1 to facilitate sensing the temperature changes of the batteries in the battery box. The upper side of the battery box 1 is open, and a battery sealing cover 12 is detachably connected to the open end of the battery box 1 to facilitate installation of the batteries in the battery box 1. An insulating box 3 with an upper side opening is provided outside the battery box 1. A plurality of heat exchange fins 13 are provided between each side of the outer side of the battery box 1 and the battery sealing cover 12 and the inner wall of the insulating box 3. Each side of the outer side of the battery box 1 is provided with a heat exchange tube 2 that is serpentinely wound around the corresponding heat exchange fin 13. The heat exchange tube 2 is made of copper tube. The heat exchange is carried out by the heat transfer oil in the heat exchange tube 2 and the outer wall of the battery box 1 and the heat exchange fins 13 to achieve the temperature control of the battery.

[0036] An outer shell 4 with an open top is disposed outside the insulating box 3. A hollow insulation cover 5 is removably connected to the open ends of the insulating box 3 and the outer shell 4. A thermal insulation layer 6 is disposed between each outer surface of the insulating box 3 and the inner walls of most outer shells 4. The insulation cover 5 contains a thermal insulation layer 6 made of aerogel, which has excellent thermal insulation properties and effectively reduces the impact of the external temperature environment on the battery. A hollow outer heat sink 41 is disposed at the bottom of the outer shell 4. A serpentine heat pipe 7 made of copper tubing is disposed within the outer heat sink 41. The inner wall of the outer heat sink 41 protrudes outward to form a serpentine heat dissipation protrusion 42 for accommodating the heat pipe 7. Multiple strip-shaped heat sinks 43 are disposed outwardly from the outer side of the serpentine heat sink 42. The serpentine heat sink 42 and the strip heat sinks 43 extend outward from the underside of the vehicle chassis, allowing the flowing airflow to dissipate heat from the thermal oil in the heat pipe 7 while the vehicle is in motion.

[0037] It also includes a circulation pump 8, the inlet end of the circulation pump 8 is connected to a circulation liquid inlet pipe 81, the outlet end of the circulation pump 8 is connected to a circulation liquid outlet pipe 82, one end of the heat dissipation pipe 7 is connected to a liquid outlet main pipe 21 connected to and communicated with one end of each heat exchange tube 2, the other end of the heat dissipation pipe 7 is connected to and communicated with the circulation liquid inlet pipe 81, the free end of the circulation liquid outlet pipe 82 is connected to a spiral heat exchange tube 22 made of copper tube, and the free end of the spiral heat exchange tube 22 is connected to a liquid inlet main pipe 23 connected to and communicated with the other end of each heat exchange tube 2.

[0038] The refrigerator further comprises a compression refrigerator 9 , wherein the evaporator 91 of the compression refrigerator 9 is in a spiral shape and is covered with a spiral heat exchange tube 22 , and an electric heating tube 10 is arranged inside the spiral heat exchange tube 22 .

[0039] Working principle: When the battery temperature is too high, the circulation pump 8 works to make the internal thermal oil pass through the heat exchange tube 2, the liquid outlet pipe 21, the heat dissipation pipe 7, the circulation liquid inlet pipe 81, the circulation pump 8, the circulation liquid outlet pipe 82, the spiral heat exchange tube 22, and the liquid inlet pipe 23 in sequence, and then circulate into the heat exchange tube 2. When the vehicle is driving, there is a high-speed airflow under the chassis. When the heat exchange tube 2 carries the high temperature generated by the battery into the heat dissipation pipe 7, the airflow passes through the serpentine heat dissipation protrusion 42 to dissipate the heat from the thermal oil in the heat dissipation pipe 7. Through continuous circulation, the battery temperature is gradually reduced.

[0040] When air cooling is insufficient to cool the battery, the compression refrigerator 9 operates, causing the evaporator 91 to generate low temperature to quickly cool the thermal oil in the spiral heat exchange tube 22. The oil is then circulated to the heat exchange tube 2 through the circulation pump 8, rapidly cooling the battery. When the temperature drops to a certain level, the compression refrigerator 9 stops operating and switches to air cooling again.

[0041] In the severe winter climate, the battery temperature is too low. At this time, the circulation pump 8 works to circulate the heat transfer oil through the spiral heat exchange tube 22. The electric heating tube 10 works to heat the heat transfer oil in the spiral heat exchange tube 22. The heated heat transfer oil circulates into the heat exchange tube 2 to heat the battery, thereby increasing the battery temperature.

[0042] After using the compression refrigerator 9 for cooling and the electric heating tube 10 for heating, the circulating pump 8 needs to stop working intermittently until the battery temperature is too high or too low. Under the protection of the thermal insulation layer 6, the external temperature is not easily affected by the battery temperature. The battery can maintain a healthy temperature for a long time, reducing the energy consumption of the circulating pump 8, the compression refrigerator 9 and the electric heating tube 10.

[0043] This specific embodiment is merely an explanation of the present invention and is not intended to limit the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed. However, as long as such modifications are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A high-efficiency temperature-controlled power battery box for new energy vehicles, comprising a battery box body (1), characterized in that: A heat-insulating box (3) is provided outside the battery box (1), and a plurality of heat exchange fins (13) are provided between each outer surface of the battery box (1) and the inner wall of the heat-insulating box (3), and a heat exchange tube (2) is provided on each outer surface of the battery box (1) and is wound in a serpentine shape around the corresponding heat exchange fins (13). An outer shell (4) is provided outside the heat-insulating box (3), and a heat insulation layer (6) is provided between each outer surface of the heat-insulating box (3) and the inner wall of most outer shells (4). A hollow outer heat dissipation plate (41) is provided on one side of the outer shell (4), and a heat dissipation tube (7) arranged in a serpentine shape is provided inside the outer heat dissipation plate (41), and the inner wall of the outer heat dissipation plate (41) protrudes outward to form a serpentine heat dissipation protrusion (42) for accommodating the heat dissipation tube (7); It also includes a circulation pump (8), the inlet end of the circulation pump (8) is connected to a circulation liquid inlet pipe (81), the outlet end of the circulation pump (8) is connected to a circulation liquid outlet pipe (82), one end of the heat dissipation pipe (7) is connected to a liquid outlet main pipe (21) connected to and in communication with one end of each heat exchange pipe (2), the other end of the heat dissipation pipe (7) is connected to and in communication with the circulation liquid inlet pipe (81), the free end of the circulation liquid outlet pipe (82) is connected to a spiral heat exchange pipe (22), and the free end of the spiral heat exchange pipe (22) is connected to a liquid inlet main pipe (23) connected to and in communication with the other end of each heat exchange pipe (2); It also includes a compression refrigerator (9), wherein the evaporator (91) of the compression refrigerator (9) is covered with the spiral heat exchange tube (22), and an electric heating tube (10) is provided inside the spiral heat exchange tube (22).

2. The high-efficiency temperature-controlled power battery box for new energy vehicles according to claim 1, characterized in that: A temperature sensor (11) is provided on the outer wall of the battery box (1).

3. The high-efficiency temperature-controlled power battery box for new energy vehicles according to claim 1, characterized in that: The battery box (1) is open on one side away from the external heat dissipation plate (41), and the open end of the battery box (1) is detachably connected to a battery sealing cover (12), and a plurality of heat exchange fins (13) are provided on the outer side of the battery sealing cover (12).

4. The high-efficiency temperature-controlled power battery box for new energy vehicles according to claim 1, characterized in that: The heat-insulating box body (3) and the outer shell body (4) are both open on one side away from the outer heat dissipation plate (41); the open ends of the heat-insulating box body (3) and the outer shell body (4) are detachably connected to a hollow heat-insulating cover (5); and a heat-insulating layer (6) is provided inside the heat-insulating cover (5).

5. A high-efficiency temperature-controlled power battery box for new energy vehicles according to any one of claims 1 or 4, characterized in that: The heat insulation layer (6) is aerogel.

6. The high-efficiency temperature-controlled power battery box for new energy vehicles according to claim 1, characterized in that: The heat exchange tube (2), the heat dissipation tube (7) and the spiral heat exchange tube (22) are all copper tubes.

7. The high-efficiency temperature-controlled power battery box for new energy vehicles according to claim 1, characterized in that: A plurality of strip-shaped heat dissipation fins (43) are arranged outwardly on the outer side of the serpentine heat dissipation protrusion (42).

8. The high-efficiency temperature-controlled power battery box for new energy vehicles according to claim 1, characterized in that: The evaporator (91) is in a spiral shape and is sheathed with the spiral heat exchange tube (22).

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