Insulating film, tray, battery pack shell, battery pack and electric equipment

Abstract

The utility model provides an insulating film which is used for a tray and is characterized in that at least one side of the insulating film is provided with back glue, one side of the insulating film, which is provided with the back glue, is adhered to the inner side wall of the tray, the inner side wall of the tray is provided with an exhaust port, and the insulating film is provided with nicks corresponding to the exhaust port of the inner side wall of the tray. And the nicks are used for being broken through by high-pressure gas in the battery pack for exhausting when the battery pack is in thermal runaway. According to the insulating film provided with the nicks in the scheme, the nicks can prevent foreign matters from entering when a battery pack is not subjected to thermal runaway and can be broken through for exhausting when the battery pack is subjected to thermal runaway, so that the problem that the current fully-perforated insulating film cannot prevent the foreign matters from entering a pack body from an exhaust channel opening is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to an insulating film for a battery pack tray. Background Art

[0002] At present, power battery packs often use extruded aluminum profiles to weld pallets. After welding, the pallets often need to be processed secondary (such as exhaust ducts, assembly holes, threaded holes, etc.). However, the metal chips or foreign matter generated by the processing are adsorbed inside the aluminum profile cavity due to the closed cavity after welding and the cutting fluid. The foreign matter inside the cavity cannot be eradicated when the pallet is cleaned; during transportation or actual use, the foreign matter in the cavity is discharged through the exhaust duct or assembly hole after vibration.

[0003] The existing technology is to attach an insulating film under the side beams and the cell cover after cleaning the surface of the pallet to isolate foreign matter and ensure the insulation and safety performance between the pallet and the cells and electrical components in the package. However, the existing insulating film adopts a fully open hole at the exhaust channel opening. The insulating film cannot isolate the metal foreign matter in the cavity from entering the package, which can easily cause short circuits and electrical insulation failure inside the package, and then cause safety accidents and fires in the package. This problem has become a pain point that is difficult to solve in the use of power battery packs in terms of safety when using welded pallet structures. Utility Model Content

[0004] The utility model provides an insulating film having a weak structure punched out at a position corresponding to the exhaust channel opening of the tray. The weak structure can block the entry of foreign matter when thermal runaway does not occur in the battery pack, and can be broken through to exhaust when thermal runaway occurs, thereby solving the problem that the current fully open-hole insulating film cannot block foreign matter from entering the package from the exhaust channel opening.

[0005] In order to achieve the purpose of this utility model, this utility model provides the following technical solutions:

[0006] According to the first aspect of the utility model, an insulating film is provided for a pallet, wherein a backing adhesive is provided on one side of the insulating film, the backing adhesive side of the insulating film is bonded to the inner wall of the pallet, the inner wall of the pallet is provided with an exhaust port, and the insulating film is provided with a notch corresponding to the exhaust port of the inner wall of the pallet, the notch is used to be broken through by the high-pressure gas inside the battery pack to open the exhaust when the battery pack has thermal runaway.

[0007] Optionally, the number of notches is set to correspond to the number of exhaust ports on the inner side wall of the tray.

[0008] Optionally, the notch is in the shape of a cross.

[0009] Optionally, the insulating film is configured to conform to the inner wall surface of the tray.

[0010] According to a second aspect of the utility model, a pallet is provided, comprising a beam and the above-mentioned insulating film, wherein the beam is enclosed to form the pallet, the pallet has an inner side wall, and the insulating film is bonded to the inner side wall of the pallet.

[0011] Optionally, the beams include a first group of beams in the length direction of the pallet and a second group of beams in the width direction of the pallet, the first group of beams is higher than the second group of beams, the insulating films are correspondingly provided with a first group of insulating films and a second group of insulating films, and the height dimensions of the first group of insulating films and the second group of insulating films are corresponding to the height dimensions of the first group of beams and the second group of beams.

[0012] Optionally, the first group of beams includes a left beam and a right beam, the second group of beams includes a front beam and a rear beam, and the number and size of the insulating films are set corresponding to the number and size of the beams.

[0013] Optionally, at least one explosion-proof valve installation hole is provided on at least one beam of the second group of beams, and a through hole is provided on the insulating film corresponding to the position and size of the explosion-proof valve installation hole.

[0014] According to a third aspect of the present utility model, a battery pack housing is provided, comprising an upper cover and the above-mentioned tray, wherein the upper cover is covered on the tray.

[0015] According to a fourth aspect of the present utility model, a battery pack is provided, comprising at least one battery cell module and the above-mentioned battery pack shell, wherein the at least one battery cell module is accommodated in the battery pack shell.

[0016] According to a fifth aspect of the present utility model, there is provided an electrical device, comprising the electrical device and the above-mentioned battery pack, wherein the battery pack is used to supply power to the electrical device.

[0017] The utility model provides an insulating film, which has a notch formed at a position corresponding to the exhaust channel opening of the tray. The notch can block foreign matter from entering the battery pack when thermal runaway does not occur, and can be broken through to exhaust when thermal runaway occurs, thereby solving the problem that the current fully open-hole insulating film cannot block foreign matter from entering the battery pack from the exhaust channel opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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:

[0019] Figure 1 It is a schematic diagram of the insulating film of the present utility model embodiment in a state where it is not installed;

[0020] Figure 2 It is a schematic diagram of the insulating film installation state of the utility model embodiment;

[0021] Description of reference numerals:

[0022] Tray 1, exhaust port 1-1, insulating film 2, notch 2-1. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the implementation of the utility model to clearly and completely describe the technical solutions in the implementation of the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] 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.

[0025] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meaning as those commonly understood by technicians in the technical field of this utility model. The terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used in this utility model includes any and all combinations of one or more related listed items.

[0026] In conjunction with the accompanying drawings, some implementation methods of the present utility model are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0027] The existing technology is to attach an insulating film under the side beams and the cell cover after cleaning the surface of the pallet to isolate foreign matter and ensure the insulation and safety performance between the pallet and the cells and electrical components in the package. However, the existing insulating film adopts a fully open hole at the exhaust channel opening. The insulating film cannot isolate the metal foreign matter in the cavity from entering the package, which can easily cause short circuits and electrical insulation failure inside the package, and then cause safety accidents and fires in the package. This problem has become a pain point that is difficult to solve in the use of power battery packs in terms of safety when using welded pallet structures.

[0028] refer to Figure 1 to Figure 2 The utility model provides an insulating film 2, which is used for a tray 1. A back glue is provided on one side of the insulating film 2. The back glue side of the insulating film 2 is bonded to the inner wall of the tray 1. The inner wall of the tray 1 is provided with an exhaust port 1-1. The insulating film 2 is provided with a notch 2-1 corresponding to the exhaust port 1-1 on the inner wall of the tray 1. The notch 2-1 is used to be broken through by the high-pressure gas inside the battery pack to open the exhaust when the battery pack has thermal runaway.

[0029] Specifically, the above innovatively designed insulating film 2 is specially designed for insulating the battery in the tray 1. The insulating film 2 not only has excellent insulating properties, but also cleverly combines the back glue and the notch 2-1 design to meet the special needs of the tray 1 when the battery pack is in thermal runaway.

[0030] One side of the insulating film 2 is coated with adhesive, which enables the insulating film 2 to be tightly bonded to the inner wall of the tray 1, which is formed by the beam of the tray 1 and does not include the inner bottom surface of the tray 1. The selection of adhesive fully considers its compatibility with the material of the tray 1 and its bonding strength, ensuring that the insulating film 2 is not easy to fall off or shift during use, and provides stable and lasting insulation protection for the batteries in the tray 1.

[0031] Considering that the battery pack may generate high-temperature and high-pressure gas during thermal runaway, the inner wall of the tray 1 is specially provided with an exhaust port 1-1 to discharge these harmful gases in time and avoid damage to the surrounding environment and equipment. In order to cooperate with this design, the insulating film 2 is also provided with notches 2-1 at the position corresponding to the exhaust port 1-1 on the inner wall of the tray 1. The depth and width of these notches 2-1 have been carefully calculated so that they can be quickly broken through when the pressure inside the battery pack increases abnormally, opening the exhaust channel so that harmful gases can be discharged smoothly.

[0032] The design of the insulating film 2 is ingenious in that it can ensure the insulation safety of the batteries in the tray 1 while providing the necessary exhaust function in an emergency. When the battery pack experiences thermal runaway, the notch 2-1 on the insulating film 2 will be quickly broken, and the released high-pressure gas can be quickly discharged, effectively preventing secondary accidents caused by gas accumulation. At the same time, the rest of the insulating film 2 remains intact, continuing to provide insulation protection for the batteries in the tray 1.

[0033] In summary, the insulating film 2 provided by the utility model has important application value in the field of battery safety. It can not only provide stable and lasting insulation protection for the batteries in the tray 1, but also quickly open the exhaust channel when the battery pack is thermally runaway, effectively preventing the accumulation and diffusion of harmful gases, reducing the risk of fire and explosion, and protecting people's lives and property safety.

[0034] In one embodiment, the number of the notches 2 - 1 corresponds to the number of the exhaust ports 1 - 1 on the inner wall of the tray 1 .

[0035] Specifically, the number of notches 2-1 on the insulating film 2 is carefully designed to correspond to the number of exhaust ports 1-1 on the inner wall of the tray 1. This design not only reflects the careful control of details, but also significantly improves the safety performance of the tray 1 when the battery pack is in thermal runaway.

[0036] Specifically, the number of notches 2-1 on the insulating film 2 completely corresponds to the number of exhaust ports 1-1 on the inner wall of the tray 1. Each exhaust port 1-1 has a corresponding notch 2-1, and this design ensures that when thermal runaway occurs in the battery pack, all exhaust ports 1-1 can be opened quickly and effectively to release the high-pressure gas accumulated inside.

[0037] The effect of this design is significant. First, it greatly improves the exhaust efficiency. Since each exhaust port 1-1 has a corresponding notch 2-1, when the gas pressure reaches a certain level, all the notches 2-1 can be broken at the same time or almost at the same time, forming an efficient exhaust channel network, so that the high-pressure gas can be discharged quickly, avoiding the risk of explosion caused by gas accumulation.

[0038] Secondly, this design also enhances the safety performance of the tray 1. When the battery pack is in thermal runaway, since all the exhaust ports 1-1 can be opened in time, the air pressure inside the tray 1 can be quickly reduced, thereby reducing the risk of the tray 1 being ruptured or deformed due to excessive internal pressure. At the same time, since the gas can be discharged quickly, the temperature inside the tray 1 can also be reduced to a certain extent, further reducing the risk of fire and explosion.

[0039] In addition, this design also reflects comprehensive consideration of battery pack safety. By precisely controlling the number and position of the notches 2-1, the tray 1 can quickly and effectively vent when the battery pack thermally runs away, thereby protecting the safety of the battery pack and surrounding equipment to the greatest extent.

[0040] In summary, the corresponding design of the number of notches 2-1 on the insulating film 2 is a very practical and effective improvement measure, which not only improves the exhaust efficiency and the safety performance of the tray 1, but also demonstrates the design concept of comprehensive consideration of battery pack safety.

[0041] In one embodiment, the shape of the notch 2 - 1 is a cross.

[0042] Specifically, in a carefully designed embodiment, the notch 2-1 on the insulating film 2 is in the shape of a cross, which is a design choice with versatility and safety. This unique shape can provide an effective countermeasure when the battery pack is in thermal runaway, protecting the tray 1 and the battery pack from damage.

[0043] First, the design of the cross-shaped notch 2-1 allows the gas to break through the notch 2-1 from multiple directions when the pressure inside the battery pack increases, forming a wide exhaust channel. Compared with straight or other shaped notches 2-1, the cross-shaped notch 2-1 has more breakout points, so that the high-pressure gas accumulated inside can be released more quickly and evenly. This design significantly improves the efficiency and effect of exhaust, helps to quickly reduce the air pressure inside the tray 1, and prevents gas accumulation from causing more serious safety problems.

[0044] Secondly, the design of the cross-shaped notch 2-1 also takes into account the stability of the structure. Due to the cross structure of the notch 2-1, after the notch 2-1 is broken, it can maintain the original structural integrity to a certain extent. This means that even under the impact of high-pressure gas, the notch 2-1 will not be easily torn or expanded, thereby reducing the possibility of external impurities or moisture entering the interior of the tray 1. This self-protection ability further enhances the safety of the tray 1.

[0045] In addition to the cross-shaped notch 2-1, we can further expand and innovate the shape. For example, we can use the "M"-shaped notch 2-1, which adds more breakthrough points on the basis of the cross, making the exhaust more uniform and efficient. In addition, we can also consider using the "star"-shaped notch 2-1, which combines multiple straight lines and curves to form a unique pattern, which is not only beautiful, but also can provide a more stable and reliable exhaust effect.

[0046] In summary, the design of the cross-shaped notch 2-1 on the insulating film 2 can provide an effective countermeasure when the battery pack is in thermal runaway, protecting the tray 1 and the battery pack from damage. At the same time, we can further expand and innovate the shape of the notch 2-1 to meet the needs of different scenarios and improve the safety and reliability of the tray 1.

[0047] In one embodiment, the insulating film 2 is configured to conform to the inner wall surface of the tray 1 .

[0048] Specifically, in order to further improve the fit and sealing between the insulating film 2 and the inner wall of the tray 1, the insulating film 2 is configured to be contoured. This design means that the shape and size of the insulating film 2 are precisely customized according to the actual shape of the inner wall of the tray 1. Through fine molds or advanced CNC cutting technology, the edges of the insulating film 2 are precisely cut to perfectly fit every bump and curve of the inner wall of the tray 1.

[0049] The contoured insulating film 2 brings about a significant improvement in effect. First, it greatly increases the contact area between the insulating film 2 and the inner wall of the tray 1, allowing the adhesive to be more evenly distributed on the contact surface between the two, thereby enhancing the stability of the bond. This means that the insulating film 2 is less likely to fall off or shift during daily use, providing more reliable protection for the battery.

[0050] Secondly, the contoured design also optimizes the air flow and exhaust effect inside the tray 1. Since the insulating film 2 fits perfectly with the inner wall of the tray 1 without any gaps, the resistance to air flow is reduced, so that when the battery pack is thermally runaway, the high-pressure gas generated inside can be discharged more smoothly through the exhaust port 1-1. This not only improves the exhaust efficiency, but also reduces the risk of gas accumulation inside the tray 1, further enhancing the safety of the tray 1.

[0051] In addition, the contoured design also makes the installation process of the insulating film 2 easier and faster. Since the insulating film 2 is in exactly the same shape as the inner wall of the tray 1, no additional adjustment or cutting is required, and it can be directly pasted. This not only improves production efficiency, but also reduces the error rate during installation.

[0052] In summary, the insulating film 2 with a contoured design has shown significant advantages in terms of enhancing the fit and sealing with the inner wall of the tray 1, optimizing the exhaust effect, and improving the installation efficiency. This innovative design provides more comprehensive and reliable protection for the batteries in the tray 1, further improving the safety and stability of the battery system.

[0053] According to another embodiment of the present application, a pallet 1 is provided, comprising a beam and the above-mentioned insulating film 2 , wherein the beam encloses the pallet 1 , the pallet 1 has an inner wall, and the insulating film 2 is bonded to the inner wall of the pallet 1 .

[0054] Specifically, the uniqueness of this Pallet 1 lies in its construction materials and design details. Pallet 1 is mainly composed of a solid beam structure, which is staggered with precise angles and connections to form a stable and durable frame of Pallet 1. At the same time, in order to further enhance the performance and practicality of Pallet 1, we innovatively introduced the element of insulation film 2.

[0055] The inner wall of the tray 1 is an important interface for placing items, and its material and design directly affect the overall performance of the tray 1. In this embodiment, we choose to bond an insulating film 2 to the inner wall of the tray 1. This insulating film 2 not only has excellent electrical insulation performance and can effectively isolate current and electromagnetic interference, but also has a tough and wear-resistant material and can maintain stable performance during long-term use.

[0056] In the bonding process between the insulating film 2 and the inner wall of the tray 1, we use advanced bonding technology to ensure that the insulating film 2 is tightly bonded to the inner wall of the tray 1 without gaps or falling off. This not only enhances the overall structural stability of the tray 1, but also greatly improves the safety and reliability of the tray 1.

[0057] By introducing the insulating film 2, the pallet 1 has shown significant advantages in many aspects. First, the improvement of electrical insulation performance makes the pallet 1 more widely used in electronic components, precision instruments and other fields. Second, the wear resistance of the insulating film 2 ensures that the pallet 1 can still maintain good appearance and performance during repeated use. Finally, the seamless bonding design makes the pallet 1 easier to clean and maintain, reducing the cost of use.

[0058] In summary, this new type of pallet 1 has a wide range of application prospects in logistics, warehousing, electronic manufacturing and other fields with its unique design and excellent performance. By innovatively introducing insulation film 2, we have brought new development momentum to the pallet 1 industry and provided users with more high-quality and reliable product choices.

[0059] In one embodiment, the beams include a first group of beams in the length direction of the tray 1 and a second group of beams in the width direction of the tray 1, the first group of beams is higher than the second group of beams, the insulating film 2 is correspondingly provided with a first group of insulating films 2 and a second group of insulating films 2, and the height dimensions of the first group of insulating films 2 and the second group of insulating films 2 are corresponding to the height dimensions of the first group of beams and the second group of beams.

[0060] Specifically, the pallet 1 has a more detailed structure and layout. The beam structure of the pallet 1 is composed of two groups of beams in different directions: one group is a first group of beams extending along the length direction of the pallet 1, and the other group is a second group of beams extending along the width direction of the pallet 1. Such a layout not only ensures the structural stability of the pallet 1, but also gives the pallet 1 good load-bearing capacity and stability.

[0061] It is worth noting that the first set of beams is designed to be higher in height than the second set of beams. This design can effectively disperse and withstand the pressure from the goods above, especially the load distribution in the length direction of the pallet 1 is more uniform. By increasing the height of the first set of beams, the pallet 1 can better adapt to and support heavy or long items, ensuring the safety of the goods during transportation and storage.

[0062] In view of such beam structure design, we have also optimized and adapted the insulating film 2 accordingly. Specifically, the insulating film 2 is also divided into two groups: the first group of insulating films 2 corresponding to the first group of beams and the second group of insulating films 2 corresponding to the second group of beams. The height dimensions of these two groups of insulating films 2 are precisely set according to the height dimensions of the first group of beams and the second group of beams. This design ensures that the insulating film 2 can completely cover and fit the inner wall of the tray 1 without leaving any dead corners, further improving the electrical insulation performance and safety of the tray 1.

[0063] Through such meticulous design and layout, the tray 1 in this embodiment not only has stronger load-bearing capacity and stability, but also has significantly improved electrical insulation performance. Whether in the transportation and storage of electronic products or in other occasions with high requirements for electrical insulation performance, this tray 1 can demonstrate its excellent performance and reliability, providing users with a better quality and safer use experience.

[0064] In one embodiment, the first group of beams includes a left beam and a right beam, the second group of beams includes a front beam and a rear beam, and the number and size of the insulating films 2 are set corresponding to the number and size of the beams.

[0065] Specifically, the beam structure of the pallet 1 is cleverly designed into two groups, each group of beams carries a specific function and role. The first group of beams, namely the left beam and the right beam, are located on both sides of the pallet 1. Their function is to enhance the stability of the pallet 1 and provide a firm boundary support. The design of the left beam and the right beam usually takes into account the overall size and load-bearing capacity of the pallet 1, ensuring that the pressure can be evenly distributed when carrying goods, and preventing the pallet 1 from being deformed or damaged.

[0066] The second set of beams, namely the front beam and the rear beam, are located at the front and rear ends of the pallet 1. They not only enhance the structural strength of the pallet 1, but also provide convenient handling and fixing points. The design of the front beam and the rear beam usually takes into account the compatibility and ease of operation of the handling equipment, ensuring that the pallet 1 can be easily operated by forklifts, lifts and other equipment.

[0067] In order to meet the electrical insulation requirements of beams at different locations, the number and size of the insulating films 2 are carefully set accordingly. Insulating films 2 of corresponding sizes are set on the left and right beams respectively to ensure that the inner walls of both sides of the tray 1 are fully covered. Similarly, insulating films 2 of corresponding sizes are also set on the front and rear beams to provide comprehensive electrical insulation protection.

[0068] This arrangement of the insulating film 2 not only takes into account the number of beams, but also accurately matches the size of the beams. By ensuring that the size of the insulating film 2 is consistent with that of the beams, the insulation effect can be maximized to prevent the influence of electric current or electromagnetic interference on the items in the tray 1. At the same time, this design also ensures that the insulating film 2 fits tightly against the inner wall of the tray 1, avoiding safety hazards caused by loosening or falling off.

[0069] In summary, this embodiment provides excellent electrical insulation performance and structural stability for the tray 1 through the fine beam structure design and the matching of the insulating film 2. Whether in the transportation and storage of electronic products or in other occasions with high requirements for electrical insulation performance, this tray 1 can demonstrate its excellent performance and reliability, providing users with a safer and more reliable use experience.

[0070] In one embodiment, at least one explosion-proof valve installation hole is provided on at least one beam of the second group of beams, and a through hole is provided on the insulating film 2 corresponding to the position and size of the explosion-proof valve installation hole.

[0071] Specifically, the second group of beams of the tray 1 are cleverly provided with explosion-proof valve mounting holes, which is an important safety feature, especially suitable for battery storage and transportation environments that may face explosion risks. In this design, at least one explosion-proof valve mounting hole is provided on at least one second group of beams (such as the front beam or the rear beam) so that an explosion-proof valve can be installed to deal with possible battery overheating or explosion.

[0072] The explosion-proof valve is a safety device that automatically opens and releases pressure when the internal pressure of the battery exceeds the safety threshold, thereby preventing the battery from exploding or rupturing. This design is critical to the safe storage and transportation of batteries, as it provides a line of defense to protect the safety of the battery and its surrounding environment in potentially dangerous situations.

[0073] At the same time, as an important component of the tray 1, the insulating film 2 is provided with a through hole corresponding to the position and size of the explosion-proof valve installation hole. This design enables the explosion-proof valve to be smoothly installed on the tray 1 without affecting the overall insulation performance of the insulating film 2. The setting of the through hole of the insulating film 2 not only ensures the normal function of the explosion-proof valve, but also prevents direct contact between the battery and other parts of the tray 1, further improving the safety of battery storage and transportation.

[0074] The effect of this design is significant. First, the installation of the explosion-proof valve provides additional safety protection for the battery, and can release pressure in time when the internal pressure of the battery is abnormal, avoiding potential dangers. Secondly, the setting of the through holes in the insulating film 2 enables the explosion-proof valve to work smoothly while maintaining the overall insulation performance of the tray 1. Finally, this design improves the practicality and flexibility of the tray 1, making it suitable for different types of battery storage and transportation needs. In summary, the tray 1 design of this embodiment has important practical application value in ensuring the safe storage and transportation of batteries.

[0075] According to another embodiment of the present application, a battery pack housing is provided, comprising an upper cover and the above-mentioned tray 1 , wherein the upper cover is covered on the tray 1 .

[0076] Specifically, the battery pack housing is mainly composed of two parts: the upper cover and the aforementioned tray 1. The tray 1, with its solid beam structure and optimized insulating film 2 configuration, provides stable support and excellent electrical insulation performance for the battery pack.

[0077] The upper cover, as another part of the battery pack shell, is also carefully designed. The upper cover fits perfectly with the tray 1, and when closed, forms a closed space for accommodating and protecting the battery pack. The material of the upper cover is strong and durable, able to withstand external shocks and vibrations, ensuring the safety of the battery pack during transportation and use.

[0078] By combining the upper cover with the tray 1, the battery pack shell not only has good structural stability and electrical insulation performance, but also exhibits other significant advantages. First, this design can effectively isolate the battery pack from the external environment, preventing pollutants such as moisture and dust from entering the battery pack, thereby extending the service life of the battery. Secondly, the close fit between the upper cover and the tray 1 enables the battery pack to maintain structural integrity when subjected to external impact, reducing the risk of battery damage.

[0079] In addition, the design of this battery pack shell also takes into account the convenience and safety of use. The upper cover is usually equipped with a convenient opening and closing mechanism to facilitate the user to install and replace the battery pack. At the same time, the battery pack shell is also equipped with necessary safety devices, such as overcurrent protection, overvoltage protection, etc., to ensure the safety of the battery during use.

[0080] In summary, the battery pack shell provided in this embodiment achieves a perfect combination of structural stability, electrical insulation performance and protection function through the combined use of the upper cover and the tray 1. This design not only meets the requirements of the battery pack for safety, reliability and durability, but also provides users with a more convenient and safe use experience. Whether in the field of electric vehicles, mobile devices or other power equipment, this battery pack shell has shown broad application prospects and potential.

[0081] According to another embodiment of the present application, a battery pack is provided, comprising at least one battery cell module and the above-mentioned battery pack shell, wherein the at least one battery cell module is accommodated in the battery pack shell.

[0082] Specifically, the core components of this battery pack include at least one battery cell module and the battery pack housing described above. The battery cell module, as the basic unit of energy storage in the battery pack, is carefully designed and manufactured to provide stable and efficient energy output. The battery pack housing, with its unique structure and function, provides a safe and stable accommodation environment for the battery cell module.

[0083] The cell module is the core of the battery pack's energy storage. Carefully selected high-quality cell materials and advanced production processes ensure that the cell module has excellent performance during the charging and discharging process. At the same time, the precise arrangement and connection between the cell modules achieve efficient energy transmission and management, thus ensuring the stable performance, safety and reliability of the entire battery pack.

[0084] The design and manufacturing of the battery pack shell, as the "protective shell" of the battery cell module, should not be underestimated. The tray 1 design mentioned earlier ensures that the battery pack shell has a stable support structure and excellent electrical insulation performance. The configuration of the insulating film 2 on the tray 1 can not only effectively isolate the battery cell module from external electrical interference, but also prevent safety accidents caused by short circuits and other problems. In addition, the close fit and protective design of the upper cover further enhance the sealing and protection capabilities of the battery pack shell, effectively resisting erosion and damage from the external environment.

[0085] By accommodating the cell module in such a battery pack shell, we have obtained a new type of battery pack with excellent performance, safety and reliability. This battery pack not only meets the needs of modern electronic devices for high energy density, long battery life and safety, but also has good environmental adaptability and service life. Whether in electric vehicles, mobile devices or other power equipment, this battery pack will show a wide range of application prospects and potential. At the same time, its high efficiency and safety performance will also bring users a more convenient and reassuring use experience.

[0086] According to another embodiment of the present application, there is provided an electrical device, including the electrical device and the above-mentioned battery pack, wherein the battery pack is used to supply power to the electrical device.

[0087] Specifically, the above-mentioned electrical equipment integrates the unique battery pack and electrical appliances described above, thereby achieving efficient and safe power supply.

[0088] In this electrical device, the battery pack plays a vital role. As a storage and supply source of energy, it is responsible for providing continuous and stable power to the electrical appliances. The design of the battery pack takes safety and reliability into full consideration. It adopts a unique tray 1 and upper cover structure, combined with the innovative design of the insulating film 2 and the cross-shaped notch 2-1, to ensure that the battery pack can still safely release internal pressure in extreme situations such as thermal runaway, avoiding the risk of explosion or leakage.

[0089] Take an electric car as an example. This electric car uses the battery pack described in this application as its power source. The battery pack provides the required power for the electric car's motor, control system and other key components to ensure the normal operation of the vehicle. Because the battery pack has a high degree of safety and stability, it can maintain stable performance even in extreme conditions such as high temperature and collision, avoiding safety accidents caused by battery problems.

[0090] In addition, this electric car also monitors and manages the status of the battery pack in real time through an intelligent management system. The management system can obtain key parameters such as the battery pack's power, temperature, and pressure in real time, determine the working status of the battery pack based on these data, and take corresponding measures, such as adjusting the charging strategy and starting the cooling system, to ensure the safe operation of the battery pack.

[0091] The launch of this power-consuming device not only improves the overall performance and safety of the power-consuming device, but also brings users a more convenient and efficient use experience. By combining innovative battery pack design and intelligent management system, this power-consuming device has achieved significant advantages in energy utilization, environmental protection, safety assurance, etc., providing strong support for future sustainable development and intelligent applications.

[0092] The utility model provides an insulating film 2, which has a notch 2-1 formed at a position corresponding to the exhaust channel opening of the tray 1. The notch 2-1 can block the entry of foreign matter when thermal runaway does not occur in the battery pack, and can be broken through to exhaust when thermal runaway occurs, thereby solving the problem that the current fully open-pored insulating film 2 cannot block foreign matter from entering the package from the exhaust channel opening.

[0093] In the description of the embodiments of the present utility model, 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 utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model.

[0094] What is disclosed above is only a preferred embodiment of the present invention, and it 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. An insulating film for a pallet, characterized in that: One side of the insulating film is provided with a backing adhesive, and the backing adhesive side of the insulating film is bonded to the inner wall of the tray. The inner wall of the tray is provided with an exhaust port, and the insulating film is provided with a notch corresponding to the exhaust port of the inner wall of the tray. The notch is used to be broken through by the high-pressure gas inside the battery pack to open the exhaust when the battery pack has thermal runaway.

2. The insulating film according to claim 1, wherein The number of the notches is set corresponding to the number of exhaust ports on the inner side wall of the tray.

3. The insulating film according to claim 1, wherein The shape of the notch is a cross.

4. The insulating film according to claim 1, wherein The insulating film is configured to conform to the inner wall surface of the tray.

5. A pallet, characterized in that: It comprises a beam and the insulating film according to any one of claims 1 to 4, wherein the beams are enclosed to form a tray, the tray has an inner wall, and the insulating film is bonded to the inner wall of the tray.

6. The pallet according to claim 5, characterized in that: The beams include a first group of beams in the length direction of the tray and a second group of beams in the width direction of the tray, the first group of beams is higher than the second group of beams, the insulating film is correspondingly provided with a first group of insulating films and a second group of insulating films, and the height dimensions of the first group of insulating films and the second group of insulating films are corresponding to the height dimensions of the first group of beams and the second group of beams.

7. The pallet according to claim 6, characterized in that: The first group of beams includes a left beam and a right beam, the second group of beams includes a front beam and a rear beam, and the number and size of the insulating films are set corresponding to the number and size of the beams.

8. The pallet according to claim 6 or 7, characterized in that: At least one explosion-proof valve installation hole is arranged on at least one beam of the second group of beams, and a through hole is arranged on the insulating film corresponding to the position and size of the explosion-proof valve installation hole.

9. A battery pack housing, characterized in that: It comprises an upper cover and the tray according to any one of claims 5 to 8, wherein the upper cover is covered on the tray.

10. A battery pack, characterized in that: The invention comprises at least one battery cell module and the battery pack casing as claimed in claim 9, wherein at least one of the battery cell modules is accommodated in the battery pack casing.

11. An electrical device, characterized in that: It comprises an electrical appliance and the battery pack according to claim 10, wherein the battery pack is used to supply power to the electrical appliance.

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