Smoke exhaust channel, tray, battery pack and electric equipment

Abstract

The utility model discloses a smoke exhaust channel, a tray, a battery pack and electric equipment. The smoke exhaust channel is used for the tray. The smoke exhaust device is characterized in that the smoke exhaust channel is provided with a protection part, a first channel is formed in the protection part, the protection part is provided with a protection section, the first channel penetrates through the protection section, the protection section extends in the first direction to form a taper body, and a gap is formed in the end, close to the outer side of the tray, of the protection section. The gap is one end of the first channel; the first direction is the height direction of the protection part. According to the smoke exhaust channel, the protection piece with the gap in the end is arranged in the channel, it can be effectively guaranteed that the interior of the tray is communicated with the smoke exhaust channel, and foreign matter in the smoke exhaust channel can be effectively prevented from entering the inner side of the tray; and metal dust or foreign matters are prevented from entering the tray along the smoke exhaust channel hole in the production process or in the use process of the battery pack, so that the battery pack is prevented from being scrapped because the battery cell is punctured and damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a smoke exhaust channel for a tray. Background Art

[0002] The smoke exhaust duct in the prior art is usually set at the left and right side beams of the pallet. There will be different degrees of metal dust or foreign matter inside the smoke exhaust duct, which is basically in a dead corner and difficult to remove. During the production process, it will enter the interior of the pallet along the smoke exhaust duct hole, puncture and damage the battery cell, causing the product to be scrapped. Utility Model Content

[0003] The utility model provides a smoke exhaust channel, which reduces the entry of foreign matter in the smoke exhaust channel into the inner side of the tray while effectively ensuring the connection between the inside of the tray and the smoke exhaust channel by arranging a protective piece with a gap in the middle in the channel.

[0004] In order to achieve the purpose of the utility model, the utility model provides the following technical solutions:

[0005] According to a first aspect of the utility model, a smoke exhaust channel is provided for a tray, wherein the smoke exhaust channel is provided with a protective member, a first channel is provided inside the protective member, the protective member is provided with a protective section, the first channel runs through the protective section, the protective section is formed with a taper along a first direction, a gap is provided near the outer end of the tray, and the gap is one end of the first channel;

[0006] The first direction is the direction of the height of the guard.

[0007] Optionally, a cross section of the protection segment passing through the axis in the first direction is an isosceles trapezoid, and an angle between a waistline of the isosceles trapezoid and the axis in the first direction is in a range of 30° to 60°.

[0008] Optionally, the protective element is further provided with a clamping section, which is connected to the protective section, and is used to clamp the protective element to the smoke exhaust channel of the tray.

[0009] Optionally, the clamping section is provided with a clamping groove, the clamping groove is formed with a first annular rib and a second annular rib, and the clamping groove is used to clamp the protective element to the smoke exhaust channel of the tray.

[0010] Optionally, the first channel is arranged along the first direction and passes through the clamping section and the protection section.

[0011] Optionally, the protective member is provided with a first end face and a second end face, the first end face is the end face of the protective section, the second end face is the end face of the clamping section, and the projection of the first end face in the first direction is located within the projection of the second end face in the first direction.

[0012] Optionally, a first opening and a second opening are respectively provided at both ends of the protective member, the first opening is provided on the first end face, and the second opening is provided on the second end face, the second opening is the other end of the first channel, the first opening and the second opening are connected, the projection of the inner contour of the first opening in the first direction is located within the projection of the inner contour of the second opening in the first direction, and the width range of the first opening is 0.2 mm to 0.5 mm.

[0013] According to a second aspect of the utility model, a tray is provided, comprising the above-mentioned smoke exhaust channel.

[0014] According to a third aspect of the present invention, a battery pack is provided, comprising the above-mentioned tray and a battery cell module, wherein the battery cell module is accommodated in the tray.

[0015] According to a fourth aspect of the present invention, there is provided an electrical device, comprising the above-mentioned battery pack, an electrical appliance and a control system, wherein the control system controls the battery pack to supply power to the electrical appliance.

[0016] The utility model provides a smoke exhaust channel. By arranging a protective piece with a gap in the middle in the channel, it can effectively ensure that the interior of the tray is connected with the smoke exhaust channel, and can also effectively reduce the entry of foreign matter in the smoke exhaust channel into the inner side of the tray, thereby preventing metal dust or foreign matter from entering the interior of the tray along the smoke exhaust channel hole during the production process or when the battery pack is in use, puncturing and damaging the battery cell and causing the battery pack to be scrapped. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 It is a schematic diagram of a protective member according to an embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of the tray smoke exhaust channel of the embodiment of the utility model;

[0020] Description of reference numerals:

[0021] Protective member 1, second opening 2, second end face 3, first channel 4, mounting groove 5, first end face 6, first opening 7, gap 8, protective section 9, mounting section 10, first annular rib 11, second annular rib 12, first direction 13, second direction 14, third direction 15, tray 16, smoke exhaust channel 17. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0024] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as those commonly understood by those skilled in the art in the technical field of this invention. The terms used in the specification of this invention are only for the purpose of describing specific embodiments and are not intended to limit this invention. The term "and / or" used in this invention includes any and all combinations of one or more of the related listed items.

[0025] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0026] The smoke exhaust duct in the prior art is usually set at the left and right side beams of the pallet. There will be different degrees of metal dust or foreign matter inside the smoke exhaust duct, which is basically in a dead corner and difficult to remove. During the production process, it will enter the interior of the pallet along the smoke exhaust duct hole, puncture and damage the battery cell, causing the product to be scrapped.

[0027] refer to Figure 1 to Figure 2 The utility model provides a smoke exhaust channel 17 for a tray 16, wherein the smoke exhaust channel 17 is provided with a protective member 1, a first channel 4 is provided inside the protective member 1, the protective member 1 is provided with a protective section 9, the first channel 4 is provided through the protective section 9, the protective section 9 is formed with a taper along a first direction 13, and a gap 8 is provided at the outer end of the protective section 9 near the tray 16, and the gap 8 is one end of the first channel 4;

[0028] The first direction 13 is the direction of the height of the protective element 1 .

[0029] Specifically, the thermal protection design of the entire battery pack needs to consider the control of the flow of high-temperature flue gas caused by thermal runaway of the battery cells, so as to avoid the disorderly diffusion and spread of heat with the high-temperature flue gas. When the flue gas is discharged to the outside of the battery pack through the explosion-proof valve and fully contacts the oxygen in the outside air, it is very easy to cause a deflagration. Therefore, smoke control is generally carried out through the flue gas flow duct preset in the battery pack, and the high-temperature flue gas caused by thermal runaway is discharged from the battery pack according to a preset path through diversion, diversion and commutation. The above-mentioned multiple exhaust channels 17 are arranged on the left and right side beams of the tray 16, and exhaust ports are arranged on the inner sides of the left and right side beams to connect to the inside of the battery pack, and are connected to the outside of the battery pack through the left and right side beam cavities. When the battery pack is thermally runaway, the combustible gas inside the battery pack can be effectively discharged through the exhaust channel 17 to avoid the explosion of the battery pack.

[0030] This embodiment provides a smoke exhaust channel 17 provided with a protective member 1. The protective member 1 is made of silicone or rubber material and is made through a series of process flows. Its basic production process includes six basic processes: plasticizing, mixing, calendering, extrusion, molding, and vulcanization. The processing process of silicone rubber is mainly a process to solve the contradiction between plasticity and elasticity. Through various processing methods, the elastic rubber is turned into plasticized rubber with plasticity, and then various compounding agents are added to make semi-finished products. Then, through vulcanization, the semi-finished products with plasticity are turned into rubber products with high elasticity and good physical and mechanical properties. The structure of the protective segment 9 of the protective member 1 is optimized and designed. The protective segment 9 is formed with a taper in the first direction 13. The design of this structure is equivalent to the protective segment 9 from the inner end of the tray 16 to the outer end of the tray 16. The channel changes from large to small, and the first channel 4 is provided with a gap 8 at the port of the protective segment 9. In summary, the smoke exhaust channel 17 with the protective member 1 can realize smoke exhaust from the inside of the battery pack to the outside, and it is not easy for foreign matter to enter from the smoke exhaust channel 17 to the inside.

[0031] In one embodiment, the cross section of the protection segment passing through the axis of the first direction is an isosceles trapezoid, and the angle between the waistline of the isosceles trapezoid and the axis of the first direction is in the range of 30° to 60°.

[0032] Specifically, the structure of the protective segment 9 of the protective member 1 is optimized, and the cross-section of the protective segment 9 passing through the axis of the first direction 13 is an isosceles trapezoid, and the angle between the waistline of the isosceles trapezoid and the axis of the first direction 13 is in the range of 30° to 60°. The above angle forms a taper of the protective segment 9 along the first direction 13. The design of this structure is equivalent to the protective segment 9 changing from a large channel to a small channel from one end close to the battery pack to the end outside the battery pack. In summary, the smoke exhaust channel 17 with the protective member 1 can realize smoke exhaust from the inside of the battery pack to the outside, and foreign matter is not easily entered from the smoke exhaust channel 17 to the inside.

[0033] In one embodiment, the protective element 1 is further provided with a clamping section 10 , which is connected to the protective section 9 . The clamping section 10 is used to clamp the protective element 1 to the smoke exhaust passage 17 of the tray 16 .

[0034] Specifically, the provision of the mounting section 10 of the protective member 1 facilitates the assembly of the protective member 1 itself with the tray 16 without the aid of an external assembly structure. Since the protective member 1 is made of silicone rubber, the mounting section 10 of the protective member 1 can be assembled with the smoke exhaust channel 17 of the tray 16 through elastic deformation. This assembly process is very simple and easy to operate.

[0035] In one embodiment, the clamping section 10 is provided with a clamping slot 5 , which is formed with a first annular rib 11 and a second annular rib 12 . The clamping slot 5 is used to clamp the protective element 1 to the smoke exhaust channel 17 of the tray 16 .

[0036] Specifically, the mounting slot 5 provided in the mounting section 10 is used to assemble with the smoke exhaust channel 17 of the above-mentioned pallet 16. The smoke exhaust channel 17 is provided on the left and right side beams of the pallet 16. The entrance of the smoke exhaust channel 17 is a machined hole on the side beam. The mounting slot 5 is used to be mounted on the machined hole. The width of the mounting slot 5 in the first direction 13 is the same as the wall thickness of the beam, that is, the wall thickness of the machined hole is the same as the width of the mounting slot 5 in the first direction 13. Such an arrangement can ensure that the protective element 1 and the entrance machined hole of the smoke exhaust channel 17 are effectively assembled without loosening. The height of the first annular rib 11 of the mounting slot 5 in the second direction 14 and the third direction 15 is lower than the height of the second annular rib 12 in the second direction 14 and the third direction 15. The height of this rib is The size from the bottom of the mounting slot 5 to the top of the annular rib in the second direction 14 and the third direction 15, the size of the first annular rib 11 in the second direction 14 and the third direction 15 is larger than the size of the machined hole, the first annular rib 11 is made of silicone rubber, the first annular rib 11 can be deformed when assembled into the machined hole to pass through the machined hole and be inserted into the machined hole, the size of the second annular rib 12 in the second direction 14 and the third direction 15 is much larger than the size of the machined hole, the second annular rib 12 cannot enter the machined hole by deformation, thereby ensuring that the protective component 1 can be fixedly mounted at the entrance machined hole of the smoke exhaust channel 17 without moving, especially when thermal runaway occurs inside the battery pack, the smoke exhaust channel 17 will not be blocked by the airflow, thereby ensuring that the smoke exhaust channel 17 can be discharged smoothly.

[0037] The second direction 14 and the third direction 15 are perpendicular to each other, the first direction 13 is perpendicular to the plane where the parallel vectors of the second direction 14 and the third direction 15 are located, the second direction 14 can be further defined as the longitudinal dimension direction of the protective element 1, and the third direction 15 can be further defined as the transverse dimension direction of the protective element 1.

[0038] In one embodiment, the first channel 4 is arranged along the first direction ( 13 ) through the clamping section 10 and the protection section 9 .

[0039] Specifically, the protective member 1 is arranged in the smoke exhaust channel 17, and firstly needs to be connected with the outside. The above-mentioned arrangement of the first channel 4 can realize the connection between the protective member 1 and the outside of the battery pack. When the battery pack has thermal runaway, the smoke exhaust channel 17 can be connected through the first channel 4 of the protective member 1 in time to exhaust smoke to the outside of the battery pack to avoid explosion of the battery pack.

[0040] In one embodiment, the protective member 1 is provided with a first end face 6 and a second end face 3, the first end face 6 is the end face of the protective section 9, the second end face 3 is the end face of the clamping section 10, and the projection of the first end face 6 in the first direction 13 is located within the projection of the second end face 3 in the first direction 13.

[0041] Specifically, the first end face 6 and the second end face 3 are respectively the two ends of the first channel 4. The first end face 6 is smaller than the second end face 3, so the second end face 3 has a larger area to set a port of the first channel 4, and the area of ​​the first end face 6 to set the other port of the first channel 4 is smaller than the second end face 3. This setting can realize the exhaust of smoke from the battery pack to the outside and prevent external foreign matter from entering the battery pack.

[0042] In one embodiment, a first opening 7 and a second opening 2 are respectively provided at both ends of the protective member 1, the first opening 7 is provided on the first end surface 6, the second opening 2 is provided on the second end surface 3, the second opening 2 is the other end of the first channel 4, the first opening 7 and the second opening 2 are connected, the projection of the inner contour of the first opening 7 in the first direction 13 is located within the projection of the inner contour of the second opening 2 in the first direction 13, and the width range of the first opening 7 is 0.2 mm to 0.5 mm.

[0043] Specifically, the setting of the protective member 1 can ensure that smoke can be discharged to the outside through the protective member 1 through the smoke exhaust channel 17 when the battery pack is thermally runaway, and on the other hand, it is to prevent foreign matter outside the battery pack from entering the battery pack through the smoke exhaust channel 17. The above-mentioned first opening 7 is smaller than the second opening 2. The design of this structure is equivalent to the passage from the second opening 2 of the protective member 1, i.e., one end close to the battery pack, to the first opening 7 of the protective member 1, i.e., the end outside the battery pack, which changes from large to small. The width range of the first opening 7 is also limited to 0.2mm~0.5mm, that is, the opening of the protective member 1 close to the end outside the battery pack is smaller, and the above-mentioned protective section 9 gap 8 is set and the channel trapezoidal shape design is added. The smoke exhaust channel 17 with the protective member 1 can realize smoke exhaust from the inside of the battery pack to the outside, and foreign matter is not easy to enter from the smoke exhaust channel 17 to the inside.

[0044] According to another embodiment of the present application, a tray 16 is provided, comprising the above-mentioned smoke exhaust channel 17 .

[0045] Specifically, the number of smoke exhaust channels 17 on the battery pack tray 16 is set according to the size of the battery pack. The smoke exhaust channels 17 can be set in the middle of the side beam or at both ends of the side beam. Preferably, 6 to 8 smoke exhaust channels 17 are set on a single side beam.

[0046] According to another embodiment of the present application, a battery pack is provided, including the above-mentioned tray 16 and a battery cell module, wherein the battery cell module is accommodated in the tray 16 .

[0047] Specifically, the battery pack uses the tray 16 to accommodate the battery cell modules. A plurality of smoke exhaust channels 17 are arranged on the tray 16. The smoke exhaust channels 17 are provided with the protective member 1. The setting of the protective member 1 can prevent foreign matter from entering the battery pack through the smoke exhaust channels 17 and damaging the battery pack.

[0048] According to another embodiment of the present application, there is provided an electrical device, including the above-mentioned battery pack, an electrical appliance and a control system, wherein the control system controls the battery pack to supply power to the electrical appliance.

[0049] Specifically, the control system of the electrical equipment controls the battery pack to supply power to the electrical equipment. When the electrical equipment needs to work, the control system controls to turn on the power switch, and when the electrical equipment needs to stop working, the control system controls to turn off the power switch. The electrical equipment can be a new energy vehicle or an outdoor energy storage device.

[0050] The utility model provides a smoke exhaust channel 17. By arranging a protective member 1 with a gap 8 in the middle in the channel, it can effectively ensure that the interior of the tray 16 is connected with the smoke exhaust channel 17, and can also effectively reduce the foreign matter in the smoke exhaust channel 17 from entering the inside of the tray 16, so as to avoid metal dust or foreign matter from entering the interior of the tray 16 along the holes in the smoke exhaust channel 17 during the production process or when the battery pack is in use, puncturing and damaging the battery cells and causing the battery pack to be scrapped.

[0051] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described 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 cannot be understood as a limitation on the present invention.

[0052] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A smoke exhaust channel for a pallet, characterized in that: The smoke exhaust channel is provided with a protective member, a first channel is provided inside the protective member, the protective member is provided with a protective section, the first channel is provided through the protective section, the protective section is formed with a taper along a first direction, and a gap is provided near the outer end of the tray of the protective section, and the gap is one end of the first channel; The first direction is the direction of the height of the protective element.

2. The smoke exhaust channel according to claim 1, characterized in that: The cross section of the protection section passing through the axis of the first direction is an isosceles trapezoid, and the angle between the waistline of the isosceles trapezoid and the axis of the first direction is in the range of 30° to 60°.

3. The smoke exhaust channel according to claim 1, characterized in that: The protective element is further provided with a clamping section, which is connected to the protective section and is used for clamping the protective element to the smoke exhaust channel of the tray.

4. The smoke exhaust channel according to claim 3, characterized in that: The clamping section is provided with a clamping groove, the clamping groove is formed with a first annular rib and a second annular rib, and the clamping groove is used to clamp the protective element to the smoke exhaust channel of the tray.

5. The smoke exhaust channel according to claim 3 or 4, characterized in that: The first channel is arranged along a first direction and penetrates the clamping section and the protection section.

6. The smoke exhaust channel according to claim 3, characterized in that: The protective member is provided with a first end face and a second end face, the first end face is the end face of the protective section, the second end face is the end face of the clamping section, and the projection of the first end face in the first direction is located within the projection of the second end face in the first direction.

7. The smoke exhaust channel according to claim 6, characterized in that: The protective member is provided with a first opening and a second opening at both ends thereof, respectively. The first opening is provided at the first end face, and the second opening is provided at the second end face. The second opening is the other end of the first channel. The first opening and the second opening are connected. The projection of the inner contour of the first opening in the first direction is located within the projection of the inner contour of the second opening in the first direction. The width of the first opening ranges from 0.2 mm to 0.5 mm.

8. A pallet, characterized in that: It comprises the smoke exhaust channel as described in any one of claims 1 to 7.

9. A battery pack, characterized in that: It comprises the tray and the battery cell module as claimed in claim 8, wherein the battery cell module is accommodated in the tray.

10. An electrical device, characterized in that: It comprises the battery pack, an electrical appliance and a control system as claimed in claim 9, wherein the control system controls the battery pack to supply power to the electrical appliance.

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