New energy battery heat insulation device and manufacturing method

Abstract

The invention belongs to the field of new energy automobiles, and provides a new energy battery heat insulation device and a manufacturing method, the new energy battery heat insulation device comprises a cubic battery jar used for placing a battery pack, the new energy battery heat insulation device is characterized in that a plurality of heat insulation assemblies are arranged in the battery jar, the heat insulation assemblies are arranged between each inner wall of the battery jar and the battery pack, and the battery pack is arranged in the battery jar. Each heat insulation assembly comprises a telescopic part and a heat insulation plate, the fixed end of the telescopic part is fixed on the inner wall of the battery jar, the telescopic end of the telescopic part is connected with the heat insulation plate, and the telescopic part drives the heat insulation plate to be attached to or away from the side wall of the battery pack in the corresponding direction. The battery pack can be subjected to heat insulation when the temperature is lower than the optimal temperature range of the battery pack, and heat dissipation of the battery pack is not affected when the temperature is higher than the optimal temperature range of the battery pack.

Description

Technical Field

[0001] The present invention belongs to the field of new energy vehicles, and particularly relates to a heat insulation device for a new energy battery and a manufacturing method thereof. Background Art

[0002] Through the detection and statistics of a large number of battery packs of new energy vehicles, it is found that the optimal operating temperature of the battery pack is between 0 and 40 °C. When the temperature is lower than the optimal operating temperature, it is easy to reduce the activity of the battery pack inside the battery pack, resulting in a shortened driving range, and there is also a risk of shortening the service life of the battery pack. When the temperature is higher than the optimal operating temperature, the probability of spontaneous combustion of the battery pack increases.

[0003] Currently, in order to avoid the reduction of the activity of the battery pack in winter at low temperatures, it is usually to wrap the battery pack with heat insulation cotton or to provide a vacuum layer outside the battery pack to prevent heat transfer. However, when the temperature is relatively high in non-winter, both the heat insulation cotton and the vacuum layer will affect the heat dissipation of the battery pack, and in severe cases, it may even lead to battery spontaneous combustion. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a heat insulation device for a new energy battery and a manufacturing method thereof, which can insulate and keep warm the battery pack when the temperature is lower than the optimal temperature range of the battery pack, and does not affect the heat dissipation of the battery pack when the temperature is higher than the optimal temperature range of the battery pack.

[0005] The technical solution of the present invention includes a cubic battery slot for placing a battery pack. It is characterized in that a plurality of heat insulation components are arranged inside the battery slot, and the plurality of heat insulation components are arranged between each inner wall of the battery slot and the battery pack. Each heat insulation component includes a telescopic component and a heat insulation plate. The fixed end of the telescopic component is fixed on the inner wall of the battery slot, and the telescopic end of the telescopic component is connected to the heat insulation plate. The telescopic component drives the heat insulation plate to fit or move away from the side wall of the battery pack in the corresponding direction.

[0006] When the temperature is lower than the optimal temperature range of the battery pack, the telescopic end of the telescopic component extends, driving the heat insulation plate to contact the battery pack for heat insulation and heat preservation.

[0007] When the temperature is higher than the optimal temperature range of the battery pack, the telescopic end of the telescopic component contracts, driving the heat insulation plate to separate from the battery pack to avoid affecting the heat dissipation of the battery pack.

[0008] Further, each side wall of the battery slot includes a plurality of movable group plates. Each movable group plate includes an outer mesh plate and two inner mesh plates. A support frame is provided at the center of one side of the outer mesh plate. The two inner mesh plates are respectively arranged on both sides of the support frame, and both inner mesh plates are slidably connected to the outer mesh plate. One ends of the two inner mesh plates away from the support frame are connected to both sides of the outer mesh plate through first springs. The fixed end of the telescopic member is fixed on the support frame, and the telescopic end of the telescopic member is connected to the two inner mesh plates in the corresponding direction through ropes.

[0009] Further, each support frame is provided with two fixed pulleys, and the two fixed pulleys cooperate with the corresponding ropes respectively, so that the ropes can pull the inner mesh plates along the sliding direction of the inner mesh plates.

[0010] Further, each telescopic member includes a cylinder telescopic rod. The fixed ends of each cylinder telescopic rod are respectively fixed on the corresponding support frames, and the inner liner rods of the cylinder telescopic rods are respectively connected to the heat insulation plates in the corresponding direction and the two inner mesh plates in the corresponding direction.

[0011] Further, each heat insulation plate includes a main board and two side boards. Each telescopic member includes a cylinder telescopic rod, a first connecting rod and a sleeve. The two side boards are rotatably connected to both sides of the main board. The sleeve is slidably sleeved on the outer sleeve of the cylinder telescopic rod. The inner liner tube of the cylinder telescopic rod is of a hollow structure, and a ring-shaped protrusion is provided at one end close to the heat insulation plate. The ring-shaped protrusion is used to squeeze the sleeve to make the sleeve slide. A second spring is arranged in the inner liner tube. One end of the first connecting rod is connected to the heat insulation plate, and the other end is inserted into the inner liner tube to squeeze the second spring. The sleeve is rotatably connected to the two side boards through two second connecting rods, and the sleeve is connected to the two inner mesh plates in the corresponding direction.

[0012] Further, a temperature sensor is also arranged inside the battery slot, and each telescopic member is connected to the temperature sensor.

[0013] The present invention also provides a manufacturing method of a new energy battery heat insulation device, including the following steps:

[0014] Step 1: In each side wall of the battery slot, slide the two inner mesh plates on both sides of the support frame of the outer mesh plate, and then connect one ends of the two inner mesh plates away from the support frame to both sides of the outer mesh plate through first springs.

[0015] Step 2: Fix the telescopic member on the support frame, and connect the telescopic ends of the telescopic member to the heat insulation plates respectively.

[0016] Step 3: Repeat Step 1 and Step 2 so that each side wall of the battery slot is connected to the telescopic member, and the telescopic member is connected to the heat insulation plate.

[0017] Step 4: Assemble the side walls of multiple battery slots into a square housing so that grooves are formed between multiple heat insulation plates.

[0018] Step 5: Place the battery pack into the groove in Step 4.

[0019] The technical solution provided by the embodiment of the present invention has the following advantages compared with the prior art:

[0020] When the temperature is lower than the optimal temperature range of the battery pack, the telescopic end of the telescopic member extends, driving the heat insulation plate to contact the battery pack for heat insulation and heat preservation. When the temperature is higher than the optimal temperature range of the battery pack, the telescopic end of the telescopic member contracts, driving the heat insulation plate to separate from the battery pack to avoid affecting the heat dissipation of the battery pack. Compared with the prior art, the present invention can perform heat insulation and heat preservation on the battery pack when the temperature is lower than the optimal temperature range of the battery pack, and does not affect the heat dissipation of the battery pack when the temperature is higher than the optimal temperature range of the battery pack.

[0021] Other advantages, objectives and features of the present invention will be partially reflected by the following description, and partially will be understood by those skilled in the art through the research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 Schematic diagram of the overall structure of the battery heat insulation device according to one embodiment of the present invention;

[0024] Figure 2 For Figure 1 Enlarged view of A in

[0025] Figure 3 Schematic diagram of the structure of the outer mesh plate according to one embodiment of the present invention;

[0026] Figure 4 Schematic diagram of the structure of the inner mesh plate according to one embodiment of the present invention.

[0027] Reference numerals:

[0028] 1. Battery slot; 11. Outer mesh plate; 12. Inner mesh plate; 13. Support frame; 14. First spring; 2. Battery pack; 3. Heat insulation plate; 31. Main board; 32. Side board; 4. Rope; 5. Fixed pulley; 6. Telescopic component; 61. Cylinder expansion rod; 611. Outer sleeve; 612. Inner lining tube; 6121. Annular protrusion; 62. First connecting rod; 63. Sleeve; 631. Second connecting rod; 64. Second spring. Detailed implementation mode

[0029] The following combines the accompanying drawings to describe a specific implementation mode of the present invention in detail. However, it should be understood that the protection scope of the present invention is not limited by the specific implementation mode.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the technical solution of 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. Therefore, it should not be understood as a limitation to the present invention.

[0031] In the description of the embodiments of the present invention, unless otherwise specified, the meaning of "a plurality of" refers to two or more.

[0032] As Figures 1 to 4 shown, the present invention provides a new energy battery heat insulation device, including a cubic battery slot 1 for placing a battery pack 2. It is characterized in that a plurality of heat insulation components are arranged inside the battery slot 1, and the plurality of heat insulation components are arranged between the inner walls of the battery slot 1 and the battery pack 2;

[0033] Each heat insulation component includes a telescopic component 6 and a heat insulation plate 3. The fixed end of the telescopic component 6 is fixed on the inner wall of the battery slot 1, and the telescopic end of the telescopic component 6 is connected to the heat insulation plate 3. The telescopic component 6 drives the heat insulation plate 3 to fit or move away from the side wall of the battery pack 2 in the corresponding direction;

[0034] When the temperature is lower than the optimal temperature range of the battery pack 2, the telescopic end of the telescopic component 6 extends, driving the heat insulation plate 3 to contact the battery pack 2 for heat insulation and heat preservation.

[0035] When the temperature is higher than the optimal temperature range of the battery pack 2, the telescopic end of the telescopic component 6 contracts, driving the heat insulation plate 3 to separate from the battery pack 2 to avoid affecting the heat dissipation of the battery pack 2.

[0036] Optionally, in the embodiments provided by the present invention, the material of the heat insulation plate 3 is a rock wool board, a polyurethane foam material, a polystyrene board, etc. The present invention does not impose any restrictions on this, and any material that can block heat flow transfer can be used.

[0037] In the embodiments provided by the present invention, the material of the battery slot 1 is a heat-conducting material.

[0038] It can be understood that when heat dissipation of the battery pack 2 is required, if the heat conductivity of the battery slot 1 is poor, it is easy to cause serious heat accumulation in the battery slot 1, resulting in a temperature rise and even causing the battery pack 2 to spontaneously combust. Selecting a material with good heat conductivity can better conduct heat transfer when heat dissipation of the battery pack 2 is required.

[0039] Optionally, in the embodiments provided by the present invention, the material of the battery slot 1 is preferably copper, but the present invention does not impose any restrictions on this, and any other material with good heat conductivity can be used.

[0040] In the embodiments provided by the present invention, each side wall of the battery slot 1 includes a plurality of movable group plates. Each movable group plate includes an outer mesh plate 11 and two inner mesh plates 12. A support frame 13 is provided at the center on one side of the outer mesh plate 11. The two inner mesh plates 12 are respectively arranged on both sides of the support frame 13, and the two inner mesh plates 12 are both slidably connected to the outer mesh plate 11. One ends of the two inner mesh plates 12 away from the support frame 13 are connected to both sides of the outer mesh plate 11 through first springs 14. The fixed end of the telescopic member 6 is fixed on the support frame 13, and the telescopic end of the telescopic member 6 is connected to the two inner mesh plates 12 in the corresponding direction through a rope 4.

[0041] In the embodiments provided by the present invention, each support frame 13 is provided with two fixed pulleys 5, and the two fixed pulleys 5 cooperate with the corresponding ropes 4 respectively to enable the ropes 4 to pull the inner mesh plates 12 along the sliding direction of the inner mesh plates 12.

[0042] It can be understood that if the rope 4 directly rubs against the support frame 13, it is easy to cause the rope 4 to break, resulting in the inability of the inner mesh plate 12 and / or the sleeve 63 to move, and ultimately resulting in the inability to insulate and heat-preserve or dissipate heat from the battery pack 2.

[0043] In the embodiments provided by the present invention, each telescopic member 6 includes a cylinder telescopic rod 61. The fixed ends of each cylinder telescopic rod 61 are respectively fixed on the corresponding support frames 13, and the inner liner rods of the cylinder telescopic rods 61 are respectively connected to the heat insulation plates 3 in the corresponding direction and the two inner mesh plates 12 in the corresponding direction.

[0044] It can be understood that when heat preservation of the battery pack 2 is required, the cylinder telescopic rod 61 extends, driving the heat insulation plate 3 to contact the battery pack 2 for heat insulation, and the rope 4 pulls the two inner mesh plates 12 close to the support frame 13 so that the meshes of the two inner mesh plates 12 are misaligned and closed with the meshes of the outer mesh plate 11. When the battery needs to dissipate heat, the cylinder telescopic rod 61 contracts, driving the heat insulation plate 3 to separate from the side wall of the battery slot 1, and the two first springs 14 respectively pull the two inner mesh plates 12 away from the support frame 13 so that the meshes of the two inner mesh plates 12 are aligned with the meshes of the outer mesh plate 11.

[0045] In the embodiment provided by the present invention, each of the heat insulation plates 3 includes a main board 31 and two side boards 32, and each of the telescopic components 6 includes a cylinder telescopic rod 61, a first connecting rod 62 and a sleeve 63. The two side boards 32 are rotatably connected to both sides of the main board 31. The sleeve 63 is slidably sleeved on the outer sleeve 611 of the cylinder telescopic rod 61. The inner liner tube 612 of the cylinder telescopic rod 61 is a hollow structure, and an annular protrusion 6121 is provided at one end close to the heat insulation plate 3. The annular protrusion 6121 is used to squeeze the sleeve 63 to make the sleeve 63 slide. A second spring 64 is provided in the inner liner tube 612. One end of the first connecting rod 62 is connected to the heat insulation plate 3, and the other end is inserted into the inner liner tube 612 to squeeze the second spring 64. The sleeve 63 is rotatably connected to the two side boards 32 through two second connecting rods 631. The sleeve 63 is connected to the two inner mesh plates 12 in the corresponding orientation.

[0046] The working principle is as follows:

[0047] When heat preservation of the battery pack 2 is required, the inner liner tube 612 of the cylinder telescopic rod 61 extends out of the outer sleeve 611, driving the main board 31 of the heat insulation plate 3 towards the battery pack 2 through the first connecting rod 62. At the same time, the annular protrusion 6121 of the inner liner tube 612 abuts against one end of the sleeve 63, driving the sleeve 63 to slide on the outer sleeve 611 towards the direction close to the battery pack 2, driving the two inner mesh plates 12 to be pulled close to the support frame 13. When the main board 31 contacts the side wall of the battery pack 2, the inner liner tube 612 continues to approach the battery pack 2, and the first connecting pipe squeezes the second spring 64 in the inner liner tube 612, so that the sleeve 63 still slides on the outer sleeve 611. At this time, the two second connecting rods 631 on the sleeve 63 squeeze the two side boards 32 so that the two side boards 32 also contact the battery pack 2, completing the heat insulation of the battery pack 2.

[0048] When heat dissipation is required for the battery pack 2, the inner liner tube 612 of the cylinder expansion link 61 contracts into the outer sleeve tube 611. At this time, under the action of the first spring 14, the two inner mesh plates 12 are pulled away from the support frame 13. Meanwhile, the sleeve 63 is pulled by the rope 4 to move away from the battery pack 2 on the outer sleeve tube 611. Since the main board 31 is still in contact with the battery pack 2 under the action of the second spring 64 for the first connecting rod 62, when the sleeve 63 slides, the two side plates 32 are pulled by the second connecting rod 631, causing the two side plates 32 to rotate and fold relative to the main board 31, the inner liner tube 612 further contracts, and the second spring 64 returns to its original state. At this time, the first connecting lever drives the main board 31 away from the battery pack 2.

[0049] It can be understood that when heat dissipation is required for the battery pack 2, if the heat insulation plate 3 is a whole plate, although the heat insulation plate 3 is separated from the battery pack 2, the whole plate will block the air flowing in from the inner mesh plate 12 and the outer mesh plate 11 from acting on the battery pack 2. It is necessary to reduce the area of the heat insulation plate 3 to avoid blocking the air from acting on the battery pack 2. Therefore, the heat insulation plate 3 is divided into the main board 31 and two side plates 32, and the blocking area is reduced by folding the side plates 32.

[0050] In the embodiment provided by the present invention, a temperature sensor is further provided inside the battery slot 1, and each of the telescopic members 6 is connected to the temperature sensor.

[0051] When the temperature detected by the temperature sensor is lower than the optimal temperature range of the battery pack 2, the telescopic end of the telescopic member 6 extends, driving the heat insulation plate 3 to contact the side wall of the battery slot 1 to insulate and keep warm the battery pack 2. The rope 4 pulls the two inner mesh plates 12 close to the support frame 13, so that the meshes of the two inner mesh plates 12 are misaligned and closed with the meshes of the outer mesh plate 11, reducing the influence of the external temperature on the temperature of the battery pack 2.

[0052] When the temperature detected by the temperature sensor is higher than the optimal temperature range of the battery pack 2, the telescopic end of the telescopic member 6 contracts, driving the heat insulation plate 3 to separate from the side wall of the battery slot 1. The two first springs 14 respectively pull the two inner mesh plates 12 away from the support frame 13, so that the meshes of the two inner mesh plates 12 are aligned with the meshes of the outer mesh plate 11 to allow air circulation, thereby dissipating heat from the battery pack 2.

[0053] The present invention also provides a manufacturing method for a new energy battery heat insulation device, including the following steps:

[0054] Step 1: In each side wall of the battery slot 1, the two inner mesh plates 12 are slidably connected to both sides of the support frame 13 of the outer mesh plate 11, and then one end of the two inner mesh plates 12 away from the support frame 13 is connected to both sides of the outer mesh plate 11 through the first spring 14.

[0055] Step 2: Fix the telescopic member 6 on the support frame 13, and connect the telescopic ends of the telescopic member 6 to the heat insulation plate 3 respectively.

[0056] Step 3: Repeat Step 1 and Step 2 so that each side wall of the battery slot 1 is connected to the telescopic member 6, and the telescopic member 6 is connected to the heat insulation plate 3.

[0057] Step 4: Assemble the side walls of multiple battery slots 1 into a square shell so that grooves are formed between multiple heat insulation plates 3.

[0058] Step 5: Place the battery pack 2 into the groove in Step 4.

[0059] It should be noted that in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Without more limitations, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including that element.

[0060] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily achieved. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrated and described examples here.

Claims

1. A new energy battery heat insulation device, comprising a cubic battery slot (1), wherein the battery slot (1) is used to place a battery pack (2), characterized in that: A plurality of heat insulation components are provided inside the battery container (1), and the plurality of heat insulation components are arranged between each inner wall of the battery container (1) and the battery pack (2); Each of the heat insulation components comprises a telescopic component (6) and a heat insulation board (3), the fixed end of the telescopic component (6) is fixed to the inner wall of the battery slot (1), the telescopic end of the telescopic component (6) is connected to the heat insulation board (3), and the telescopic component (6) drives the heat insulation board (3) to fit or move away from the side wall of the battery pack (2) in the corresponding position; When the temperature is lower than the optimal temperature range of the battery pack (2), the telescopic end of the telescopic component (6) extends, driving the heat insulation plate (3) to contact the battery pack (2) to provide heat insulation; When the temperature is higher than the optimal temperature range of the battery pack (2), the telescopic end of the telescopic component (6) contracts, driving the heat insulation board (3) to separate from the battery pack (2), thereby avoiding affecting the heat dissipation of the battery pack (2).

2. A new energy battery heat insulation device as claimed in claim 1, characterized in that: Each side wall of the battery slot (1) comprises a plurality of movable panels, each of the movable panels comprises an outer mesh panel (11) and two inner mesh panels (12), a support frame (13) is provided at the center of one side of the outer mesh panel (11), the two inner mesh panels (12) are respectively arranged on both sides of the support frame (13), and the two inner mesh panels (12) are slidably connected to the outer mesh panel (11), and one end of the two inner mesh panels (12) away from the support frame (13) is connected to both sides of the outer mesh panel (11) via a first spring (14); The fixed end of the telescopic component (6) is fixed on the support frame (13), and the telescopic end of the telescopic component (6) is connected to the two inner mesh plates (12) at corresponding positions via a rope (4).

3. A new energy battery insulation device as claimed in claim 2, characterized in that: Each of the support frames (13) is provided with two fixed pulleys (5), and the two fixed pulleys (5) respectively cooperate with the corresponding ropes (4) so ​​that the ropes (4) can pull the inner mesh plate (12) along the sliding direction of the inner mesh plate (12).

4. A new energy battery heat insulation device as claimed in claim 3, characterized in that: Each of the telescopic components (6) comprises a cylinder telescopic rod (61), the fixed end of each of the cylinder telescopic rods (61) is respectively fixed to the corresponding support frame (13), and the inner lining rod of the cylinder telescopic rod (61) is respectively connected to the insulation board (3) at the corresponding position and to the two inner mesh panels (12) at the corresponding position.

5. A new energy battery heat insulation device as claimed in claim 3, characterized in that: Each of the heat insulation panels (3) comprises a main panel (31) and two side panels (32); each of the telescopic components (6) comprises a cylinder telescopic rod (61), a first connecting rod (62) and a sleeve (63); The two side plates (32) are rotatably connected to the two sides of the main plate (31); the sleeve (63) is slidably sleeved on the outer sleeve (611) of the cylinder telescopic rod (61); the inner lining tube (612) of the cylinder telescopic rod (61) is a hollow structure, and an annular protrusion (6121) is provided at one end close to the heat insulation board (3); the annular protrusion (6121) is used to squeeze the sleeve (63) so that the sleeve (63) slides; a second spring (64) is provided in the inner lining tube (612); one end of the first connecting rod (62) is connected to the heat insulation board (3), and the other end is inserted into the inner lining tube (612) to squeeze the second spring (64); the sleeve (63) is rotatably connected to the two side plates (32) through two second connecting rods (631); and the sleeve (63) is connected to the two inner mesh plates (12) in corresponding positions.

6. A new energy battery heat insulation device as claimed in claim 1, characterized in that: A temperature sensor is also provided inside the battery slot (1), and each of the telescopic components (6) is connected to the temperature sensor.

7. The method for manufacturing a new energy battery heat insulation device according to claim 2, characterized in that: The following steps are involved: Step 1: In each side wall of the battery slot (1), two inner mesh plates (12) are slidably connected to both sides of the support frame (13) of the outer mesh plate (11), and then one end of the two inner mesh plates (12) away from the support frame (13) is connected to both sides of the outer mesh plate (11) through a first spring (14); Step 2: fixing the telescopic component (6) on the support frame (13), and connecting the telescopic ends of the telescopic component (6) to the heat insulation board (3) respectively; Step 3: Repeat steps 1 and 2, so that each side wall of the battery container (1) is connected to the telescopic component (6), and the telescopic component (6) is connected to the heat insulation board (3); Step 4: splicing and assembling the side walls of the plurality of battery containers (1) into a square housing, so that grooves are formed between the plurality of heat insulation plates (3); Step 5: Place the battery pack (2) into the groove in step 4.

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