A new energy vehicle battery structure

Abstract

A new energy vehicle battery structure is characterized in that a serpentine cooling tube is used for temperature control. The serpentine cover is formed by bending a double-layer metal sheet structure. A communicating flow cavity is provided between the double-layer metal sheets to improve the heat dissipation performance of the battery. By arranging a cooling cycle heat collection component, the low temperature environment of the battery can be insulated. At low temperatures, the heat collected inside the cooling cycle heat collection component is transferred to the flow cavity of the serpentine cover to maintain the temperature of the battery after parking, prevent the storage and conversion of electricity from being affected by the excessively low temperature, and improve the battery performance. When dissipating heat, the heat generated by the battery body will be absorbed by the serpentine cooling tube inside the serpentine cover, so that the heat on the surface of the battery body is reduced, and a large amount of heat accumulation is avoided to cause damage to the battery. The heat can also be stored in the phase change heat storage material when the car is running, so that there is no need to waste extra battery energy when the battery is insulated.

Description

Technical Field

[0001] The invention relates to the technical field of new power automobiles, and in particular to a new energy automobile battery structure. Background Art

[0002] New energy vehicles refer to vehicles that use unconventional automotive fuels as their power source (or use conventional automotive fuels and adopt new on-board power devices), and integrate advanced technologies in vehicle power control and drive to form vehicles with advanced technical principles, new technologies, and new structures. New energy vehicles include pure electric vehicles, extended-range electric vehicles, hybrid vehicles, fuel cell electric vehicles, hydrogen engine vehicles, and other new energy vehicles.

[0003] A Chinese patent has disclosed a new energy vehicle battery structure (publication number CN207993926U). The battery can reduce the vibration of the battery cell and prevent thermal runaway between the battery cells. The design of the heat insulation layer and the plug-type waterproof breathable valve are conducive to the heat dissipation of the entire structure, and the design of the shockproof layer at the bottom of the groove further reduces the vibration of the battery cell, prevents damage to the battery cell, extends the service life of the battery cell, and enhances the safety and operational performance of the battery structure. However, a large amount of heat will be generated during the use of the battery, and only heat dissipation holes and breathable valves are used for air dissipation, which will cause the heat to dissipate slowly. After long-term use, heat accumulation can easily cause the battery to burn out.

[0004] In addition, the working performance of batteries is related to temperature. If the temperature is too high, the battery is prone to danger. If the temperature is too low, although the battery is not dangerous, the battery's charging and discharging performance is prone to weakening, and the required power storage requirements cannot be achieved, which greatly reduces the battery's performance. The current battery structure generally only considers the heat dissipation performance, but does not consider the low temperature performance.

[0005] Therefore, the present invention provides a new energy vehicle battery structure to solve the problems raised in the above background technology. Summary of the invention

[0006] The purpose of the present invention is to provide a new energy vehicle battery structure to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a new energy vehicle battery structure, comprising a box body, a protective cover is arranged on the top of the box body, characterized in that: the inner wall of the box body is provided with a serpentine cover shell, the serpentine cover shell is a wave structure, and the wave bending part of the serpentine cover shell is evenly spaced with receiving grooves, each battery body of the automobile battery is clamped and positioned in the receiving groove of the serpentine cover shell, the top inner wall of the receiving groove of the serpentine cover shell is tightly connected with a serpentine cooling pipe, and the top of the serpentine cover shell is provided with a sealing cover; characterized in that,

[0008] The serpentine housing is formed by bending a double-layer metal sheet structure that is spaced apart, and a communicating flow cavity is provided between the double-layer metal sheets of the serpentine housing;

[0009] A cooling circulation heat collection component is provided on one side of the box body, and the cooling circulation heat collection component is cyclically connected with the serpentine cooling pipe to cyclically cool the battery cells;

[0010] The cooling cycle heat collection component is also connected to the flow cavity of the serpentine cover so that the heat collected inside the cooling cycle heat collection component can be transferred to the flow cavity of the serpentine cover in a low temperature environment.

[0011] Further, as a preference, the cooling cycle heat collection assembly includes a cooling heat collection box, a cooling circulation pump and heat storage material, wherein a horizontal partition is arranged inside the cooling heat collection box, and a cooling chamber is constructed above the partition, a cooling circulation pump is arranged in the cooling chamber, a cooling medium inlet pipe of the cooling circulation pump is connected to one end of the cooling pipe, and a cooling medium outlet pipe of the cooling circulation pump is connected to the outside of the cooling heat collection box or to the other end of the cooling pipe; a heat exchange pipe is also connected to the cooling medium outlet pipe of the cooling circulation pump, and the heat exchange pipe extends downward under the partition, and the area constructed between the bottom of the partition and the cooling heat collection box is a heat collection area, a phase change material is arranged inside the heat collection area, the heat exchange pipe is coiled in the phase change material, and the end of the heat exchange pipe extends out of the cooling heat collection box, and a ventilation pipe is arranged on the side of the cooling heat collection box close to the box body, and the ventilation pipe is connected to the flow cavity of the serpentine cover.

[0012] Furthermore, as a preference, a control valve 1 is also provided on the ventilation pipe, a control valve 2 is also provided at the connection between the heat exchange pipe and the cooling medium outlet pipe, a temperature sensor is provided in the battery cell, the temperature sensor is connected to the controller, and the control valve 1, control valve 2 and cooling circulation pump are all connected to the controller.

[0013] Furthermore, preferably, a thermal insulation sleeve is provided between the phase change thermal storage material and the cooling thermal collector box, and the phase change thermal storage material is placed in the thermal insulation sleeve.

[0014] Furthermore, preferably, the cooling circulation pump is also connected to a heat dissipation pipe, the heat dissipation pipe extends upward from the top of the cooling heat collection tank, and the heat exchange pipe is coiled.

[0015] Further, preferably, a plurality of reinforcing ribs are arranged on the inner surface of the serpentine cover.

[0016] Further, preferably, both sides of the inner wall of the box body are fixedly connected with stoppers, the stoppers are heat-resistant silicone material components, and the stoppers are in contact with the battery body.

[0017] Further, as a preference, arc grooves are provided on both sides of the inner wall of the box body, and the serpentine cover is movably connected to the arc grooves.

[0018] Further, preferably, the interior of the serpentine cooling tube is filled with a cooling medium, and a medium outlet is provided at the top of the serpentine cooling tube, and the cooling medium is liquid or gaseous.

[0019] Further, as a preference, grooves are provided on both sides of the inner wall of the box body, and blocks are fixedly connected to both sides of the serpentine cover shell, the blocks are plugged into the grooves, a limiting block is fixedly connected inside the grooves, a limiting groove is provided on one side of the block, and the limiting groove matches the limiting block.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. The serpentine cover of the present invention is formed by bending a double-layer metal sheet structure that is spaced apart, and a communicating flow cavity is provided between the double-layer metal sheets of the serpentine cover, so that not only the heat dissipation performance of the battery can be improved, but also, by providing a cooling cycle heat collection component, the low temperature environment of the battery can be heat-insulated, so that in the cold winter, the heat collected inside the cooling cycle heat collection component is transferred to the flow cavity of the serpentine cover, so as to maintain the temperature of the battery after parking, prevent the battery temperature from being too low to affect the storage and conversion of electricity, and improve the battery performance;

[0022] 2. When dissipating heat, a serpentine cooling tube is arranged inside the serpentine casing. During the use of the battery, the cooling medium inside the serpentine cooling tube keeps the temperature inside the serpentine casing low all the time. The serpentine casing is in close contact with the battery, so the heat generated by the battery body will be absorbed by the serpentine cooling tube inside the serpentine casing, reducing the heat on the surface of the battery body, avoiding the situation where a large amount of heat accumulation causes the battery to burn out. At the same time, the heat can be stored in the phase change heat storage material when the car is running, so that there is no need to waste extra battery energy when keeping the battery warm.

[0023] 3. By setting the arc groove, the position of the serpentine cover can be limited, so that it is not easy to be misaligned with the box body, and the serpentine cover can be prevented from moving inside the box body by the clamping block stuck in the groove, and the limit block stuck in the limit groove can make the serpentine cover and the box body more stable;

[0024] 4. The present invention can effectively reduce the harm of vibration to the battery body and ensure the heat dissipation and shock absorption effects by arranging the battery body on the inner side of the serpentine cover. At the same time, under the further limitation of the block, the shaking of the battery body can be effectively avoided, so that the service life of the battery body is longer. In addition, a thermal conductive silicone sheet can be filled in the gap between the battery body and the serpentine cover to further ensure the stability of the battery body. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is an exploded diagram of a new energy vehicle battery structure;

[0026] Figure 2 It is a schematic diagram of the structure of a serpentine cover in a new energy vehicle battery structure;

[0027] Figure 3 A new energy vehicle battery structure Figure 1 Enlarged view of point A in the middle.

[0028] Figure 4 A structural diagram of a cooling cycle heat collection component for a new energy vehicle battery structure; DETAILED DESCRIPTION

[0029] See also Figures 1 to 4 In an embodiment of the present invention, a new energy vehicle battery structure includes a box body 1, a protective cover 2 is arranged on the top of the box body 1, and the characteristics are: the inner wall of the box body 1 is provided with a serpentine cover shell 3, the serpentine cover shell 3 is a wave structure, and the wave bending part of the serpentine cover shell 3 is evenly spaced with receiving grooves, each battery body 5 of the automobile battery is clamped and positioned in the receiving groove of the serpentine cover shell 3, the top inner wall of the receiving groove of the serpentine cover shell 3 is tightly connected with a serpentine cooling pipe 8, and the top of the serpentine cover shell 3 is provided with a sealing cover 9;

[0030] The serpentine housing 3 is formed by bending a double-layer metal sheet structure that is spaced apart, and a communicating flow cavity 26 is provided between the double-layer metal sheets of the serpentine housing 3;

[0031] A cooling circulation heat collection component is provided on one side of the box body 1, and the cooling circulation heat collection component is cyclically connected with the serpentine cooling pipe 8 so as to cyclically cool the battery cells;

[0032] The cooling cycle heat collection component is also connected to the flow cavity 26 of the serpentine cover 3, so that the heat collected inside the cooling cycle heat collection component can be transferred to the flow cavity of the serpentine cover 3 in a low temperature environment. When dissipating heat, during the use of the battery, the cooling medium inside the serpentine cooling tube 8 keeps the inside of the serpentine cover 3 at a relatively low temperature. The serpentine cover 3 is in close contact with the battery, so the heat generated by the battery body 5 will be absorbed by the serpentine cooling tube 8 inside the serpentine cover 3, so that the heat on the surface of the battery body 5 is reduced, avoiding the situation where a large amount of heat accumulates and causes the battery to burn out, and solving the problem that the heat dissipation method of opening air vents is slow, and the heat accumulation after long-term use easily causes the battery to burn out. In this way, the need for battery heat dissipation can be guaranteed, and in the cold winter, the battery temperature can be prevented from being too low after parking, thereby ensuring the battery's power storage performance.

[0033] In this embodiment, the cooling circulation heat collection assembly includes a cooling heat collection box 15, a cooling circulation pump 18 and a heat storage material, wherein a horizontal partition is arranged inside the cooling heat collection box, and a cooling cavity is configured above the partition, and a cooling circulation pump is arranged in the cooling cavity, and a cooling medium inlet pipe 19 of the cooling circulation pump 18 is connected to one end of the cooling pipe 8, and a cooling medium outlet pipe 20 of the cooling circulation pump 18 is connected to the outside of the cooling heat collection box 15 or to the other end of the cooling pipe 8; A heat exchange pipe 23 is also connected to the cooling medium outlet pipe 20 of the ring pump 18, and the heat exchange pipe extends downward under the partition. The area constructed between the bottom of the partition and the cooling heat collection box is the heat collection area. A phase change material 21 is arranged inside the heat collection area. The heat exchange pipe 23 is coiled in the phase change material, and the end of the heat exchange pipe extends out of the cooling heat collection box 15. A ventilation pipe 24 is arranged on the side of the cooling heat collection box 15 close to the box body 1, and the ventilation pipe 24 is connected to the flow cavity 26 on the serpentine cover 3.

[0034] As a preferred embodiment, a control valve 1 25 is also provided on the ventilation pipe 24, a control valve 2 17 is also provided at the connection between the heat exchange pipe and the cooling medium outlet pipe 20, a temperature sensor is provided in the battery cell, the temperature sensor is connected to the controller, and the control valve 1, control valve 2 and cooling circulation pump 18 are all connected to the controller.

[0035] Among them, an insulation sleeve 22 is also provided between the phase change heat storage material and the cooling heat collection tank 15, and the phase change heat storage material is placed in the insulation sleeve. The cooling circulation pump 18 is also connected to a heat dissipation pipe 16, which extends upward from the top of the cooling heat collection tank 15, and the heat exchange pipe is coiled.

[0036] In addition, in the present invention, a plurality of reinforcing ribs 4 are provided on the inner surface of the serpentine cover 3, and the reinforcing ribs 4 can prevent the serpentine cover 3 from being deformed as a whole, making it more stable when installed inside the box body 1, and a thermally conductive silicone sheet can be filled in the gap between the battery body 5 and the serpentine cover 3 to further ensure the stability of the battery body 5.

[0037] Blocks 6 are fixedly connected to both sides of the inner wall of the box body 1. The block 6 is a heat-resistant silicone material component. The block 6 contacts the battery body 5. The block 6 can limit the position of the battery body 5, which can effectively prevent the battery body 5 from shaking, extend the service life of the battery body 5, and reduce the damage to the battery body 5 caused by vibration. Arc grooves 7 are provided on both sides of the inner wall of the box body 1. The serpentine cover 3 is movably connected to the arc grooves 7. By setting the arc grooves 7, the position of the serpentine cover 3 can be limited, so that it is not easy to be misaligned with the box body 1. The block 11 is stuck in the groove 10 to prevent the serpentine cover 3 from moving inside the box body 1, and the limit block 12 is stuck in the limit groove 13 to make the serpentine cover 3 and the box body 1 more stable.

[0038] As a preferred embodiment, the interior of the serpentine cooling tube 8 is filled with a cooling medium, and a medium outlet 14 is provided at the top of the serpentine cooling tube 8, and the cooling medium is liquid or gaseous. When the gaseous state is adopted, a non-circulating method can be adopted, that is, the gaseous state is directly discharged from the outside, and the air intake directly absorbs the outside air, while the liquid medium needs to be recycled. Grooves 10 are provided on both sides of the inner wall of the box body 1, and blocks 11 are fixedly connected on both sides of the serpentine cover 3, and the blocks 11 are plugged into the grooves 10. A limiting block 12 is fixedly connected to the interior of the groove 10, and a limiting groove 13 is provided on one side of the block 11, and the limiting groove 13 matches the limiting block 12.

[0039] The working principle of the present invention is: by arranging a serpentine cooling tube 8 inside the serpentine cover 3, during the use of the battery, the coolant inside the serpentine cooling tube 8 keeps the inside of the serpentine cover 3 at a relatively low temperature, and the serpentine cover 3 is in close contact with the battery, so the heat generated by the battery body 5 will be absorbed by the serpentine cooling tube 8 inside the serpentine cover 3, so that the heat on the surface of the battery body 5 is reduced, and the situation that a large amount of heat accumulation causes the battery to burn out is avoided, and the problem that the heat loss is slow when the air vents are opened for heat dissipation, and the heat accumulation easily causes the battery to burn out after long-term use is solved, and the serpentine cover 3 also has a good shock absorption effect, which can reduce the damage caused by vibration to the battery body 5, making the use of the battery body 5 more durable. In the cold winter, the cooling cycle heat collection component can absorb the heat generated when the battery is running, and then after parking, the heat storage heat inside the cooling cycle heat collection component can be slowly and automatically transferred to the internal circulation cavity of the serpentine cover 3, thereby ensuring that the temperature of the battery part is not too low, and improving the performance of the battery.

[0040] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A new energy vehicle battery structure, comprising a box body (1), wherein a protective cover (2) is provided on the top of the box body (1), characterized in that: The inner wall of the box body (1) is provided with a serpentine cover (3), the serpentine cover (3) is a wave structure, and the wave bend of the serpentine cover (3) is provided with receiving grooves at equal intervals, each battery body (5) of the automobile battery is clamped and abutted against the receiving groove of the serpentine cover (3), the top inner wall of the receiving groove of the serpentine cover (3) is tightly connected with a serpentine cooling pipe (8), and the top of the serpentine cover (3) is provided with a sealing cover (9); The serpentine cover (3) is formed by bending a double-layer metal sheet structure that is spaced apart, and a communicating flow cavity is provided between the double-layer metal sheets of the serpentine cover (3); A cooling circulation heat collection component is provided on one side of the box body (1), and the cooling circulation heat collection component is in circulation communication with the serpentine cooling pipe (8) so as to perform circulation cooling on the battery cells; The cooling cycle heat collection component is also in communication with the circulation cavity of the serpentine cover (3), so that heat collected inside the cooling cycle heat collection component can be transferred to the circulation cavity of the serpentine cover (3) in a low-temperature environment.

2. A new energy vehicle battery structure according to claim 1, characterized in that: The cooling circulation heat collection assembly comprises a cooling heat collection box (15), a cooling circulation pump (18) and a phase change heat storage material (21), wherein a horizontal partition is arranged inside the cooling heat collection box, a cooling cavity is configured above the partition, a cooling circulation pump is arranged inside the cooling cavity, a cooling medium inlet pipe (19) of the cooling circulation pump (18) is connected to one end of the cooling pipe (8), and a cooling medium outlet pipe (20) of the cooling circulation pump (18) is connected to the outside of the cooling heat collection box (15) or to the other end of the cooling pipe (8); the cooling circulation pump ( A heat exchange tube (23) is also connected to the cooling medium outflow pipe (20) of the cooling system (18), and the heat exchange tube extends downwardly into the bottom of the partition. The area between the bottom of the partition and the cooling heat collection box is a heat collection area. Phase change heat storage material (21) is arranged inside the heat collection area. The heat exchange tube (23) is coiled and arranged in the phase change heat storage material, and the end of the heat exchange tube extends out of the cooling heat collection box (15). A ventilation pipe (24) is arranged on the side of the cooling heat collection box (15) close to the box body (1), and the ventilation pipe (24) is connected to the flow cavity of the serpentine cover (3).

3. A new energy vehicle battery structure according to claim 2, characterized in that: A control valve 1 (25) is also provided on the ventilation pipe (24), a control valve 2 (17) is also provided at the connection between the heat exchange pipe and the cooling medium outflow pipe (20), a temperature sensor is provided in the battery cell, the temperature sensor is connected to a controller, and the control valve 1, the control valve 2 and the cooling circulation pump (18) are all connected to the controller.

4. A new energy vehicle battery structure according to claim 2, characterized in that: A heat-insulating sleeve (22) is further provided between the phase-change heat-storage material (21) and the cooling heat-collecting box (15), and the phase-change heat-storage material is placed in the heat-insulating sleeve.

5. A new energy vehicle battery structure according to claim 2, characterized in that: The cooling circulation pump (18) is also connected to a heat dissipation pipe (16), the heat dissipation pipe extends upward from the top of the cooling heat collection tank (15), and the heat exchange pipe is arranged in a coil.

6. A new energy vehicle battery structure according to claim 2, characterized in that: A plurality of reinforcing ribs (4) are arranged on the inner surface of the serpentine cover (3).

7. A new energy vehicle battery structure according to claim 1, characterized in that: Blocks (6) are fixedly connected to both sides of the inner wall of the box body (1); the block (6) is a heat-resistant silicone material component; and the block (6) is in contact with the battery body (5).

8. A new energy vehicle battery structure according to claim 1, characterized in that: Arc grooves (7) are provided on both sides of the inner wall of the box body (1), and the serpentine cover shell (3) is movably connected to the arc grooves (7).

9. A new energy vehicle battery structure according to claim 1, characterized in that: The interior of the serpentine cooling tube (8) is filled with a cooling medium, and a medium outlet (14) is provided at the top of the serpentine cooling tube (8), and the cooling medium is in liquid or gaseous state.

10. A new energy vehicle battery structure according to claim 1, characterized in that: Grooves (10) are provided on both sides of the inner wall of the box body (1), and clamping blocks (11) are fixedly connected to both sides of the serpentine cover shell (3), the clamping blocks (11) are plugged into the grooves (10), and a limiting block (12) is fixedly connected inside the grooves (10), and a limiting groove (13) is provided on one side of the clamping block (11), and the limiting groove (13) matches the limiting block (12).

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