Battery and vehicle

Abstract

The utility model provides a battery and a vehicle, the battery comprises a battery monomer, a box body and a protection plate, and the battery monomer is provided with an anti-explosion valve; the battery monomers are accommodated in the box body, the box body is provided with a box wall, and the anti-explosion valve faces the box wall; the protection plate is located between the single battery and the box wall and used for covering the single battery, and an exhaust hole is formed in the position, corresponding to the anti-explosion valve, of the protection plate and penetrates through the protection plate; when the battery is installed on the vehicle, the protection plate is located between the battery monomers and the ground. According to the battery, the protection plate is arranged between the battery monomer and the box wall and fixes the battery monomer, so that the movement of the bottom of the battery monomer relative to the box wall is reduced, the probability that the bottom of the battery monomer is scratched is reduced, the safety and reliability of the battery are improved, and the self-protection performance of the battery is improved. Moreover, the exhaust holes are formed in the positions, corresponding to the anti-explosion valves of the single batteries, of the protection plate, so that gas in the anti-explosion valves can be quickly exhausted, and the risk of thermal runaway is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of lithium batteries, and in particular to a battery and a vehicle. Background Art

[0002] The operating conditions of power batteries are complex. During the use of batteries, they are easily affected by sudden environmental changes, which may cause damage to the battery cells. Therefore, how to improve the battery's own protection performance is an urgent problem that needs to be solved.

[0003] In view of this, a new battery and a vehicle are provided to improve the protection performance of the battery itself. Utility Model Content

[0004] In view of the above problems, the present application provides a battery and a vehicle, aiming to solve the technical problem of how to improve the battery's own protection performance in the related art.

[0005] According to some embodiments of the present application, the present application provides a battery, including a battery cell, a box body and a protective plate, the battery cell having an explosion-proof valve; the battery cell is accommodated in the box body, the box body has a box wall, and the explosion-proof valve faces the box wall; the protective plate is located between the battery cell and the box wall and is used to cover the battery cell, the protective plate is provided with an exhaust hole corresponding to the position of the explosion-proof valve, and the exhaust hole passes through the protective plate; when the battery is installed on a vehicle, the protective plate is located between the battery cell and the ground.

[0006] By setting a protective plate between the battery cell and the box wall, the protective plate fixes the battery cell, reduces the movement of the bottom of the battery cell relative to the box wall, reduces the chance of the bottom of the battery cell being scratched, improves the safety and reliability of the battery, and enhances the battery's own protection performance. In addition, the protective plate has an exhaust hole at the position of the explosion-proof valve of the battery cell, which can quickly discharge the gas in the explosion-proof valve and reduce the risk of thermal runaway.

[0007] In some embodiments, a venting groove communicating with the venting hole is formed on a side of the protective plate facing away from the battery cell, and the venting groove extends along a first direction and passes through the protective plate.

[0008] After the gas in the explosion-proof valve enters the corresponding exhaust hole, the exhaust hole is connected to the exhaust groove, and the gas in the exhaust hole enters the exhaust groove. The exhaust groove runs through the protective plate, and the gas in the exhaust groove enters the box body. By setting the exhaust groove, the internal exhaust capacity of the battery is improved, the exhaust efficiency is improved, and the risk of thermal runaway is further reduced. In addition, the exhaust groove is located on the lower side of the protective plate, and the position of the exhaust groove corresponds to the direction of gas ejection, so that the gas can quickly enter the exhaust groove, further improving the exhaust efficiency.

[0009] In some embodiments, along the axial direction of the exhaust hole, the height dimension of the protective plate is greater than 0.1 mm and less than 50 mm.

[0010] By limiting the height dimension of the protective plate along the axis direction of the exhaust hole to between 0.1mm and 50mm, the protective plate has appropriate structural strength, can support the battery cell, reduce scratches on the bottom of the battery cell, and effectively protect the battery cell under bottom scraping conditions. In addition, the space occupied by the protective plate in the box and the weight of the protective plate are reasonably limited, so that the battery can be lighter.

[0011] In some embodiments, along the axial direction of the exhaust hole, the height dimension of the protective plate is greater than or equal to 0.5 mm and less than or equal to 10 mm.

[0012] The height dimension of the protective plate is further limited so that the protective plate has appropriate structural strength, can effectively protect the bottom of the battery cell under bottom scraping conditions, protect the battery cell, and limit the space occupied by the protective plate in the accommodating cavity. At the same time, the weight of the protective plate can also be limited.

[0013] In some embodiments, the protective plate has a hollow cavity, the hollow cavity penetrates the protective plate along a first direction, and the exhaust hole is connected to the hollow cavity.

[0014] By providing the hollow cavity, the gas in the exhaust hole can enter the hollow cavity, and the hollow cavity provides a larger air release space for the explosion-proof valve, thereby improving the exhaust efficiency of the battery. In addition, the provision of the hollow cavity makes the protective plate lighter, which can reduce the weight of the battery and facilitate the installation and removal of the battery.

[0015] In some embodiments, the box body includes an upper shell and a bottom guard plate, the upper shell cooperates with the bottom guard plate to form a accommodating cavity, the battery cell is accommodated in the accommodating cavity, a side wall of the bottom guard plate facing the upper shell is the box wall, the protective plate is arranged on the bottom guard plate, and the battery cell is arranged between the protective plate and the upper shell.

[0016] By arranging the upper shell and the bottom guard plate to cooperate, the upper shell and the bottom guard plate jointly define a receiving cavity, so that the battery cell and the protective plate can be conveniently received in the receiving cavity, thereby protecting and accommodating the battery cell. The battery cell is arranged between the protective plate and the upper shell to limit the vertical direction of the battery cell, reduce the horizontal movement of the battery cell relative to the bottom guard plate, and reduce the probability of scratching the bottom of the battery cell.

[0017] In some embodiments, the bottom guard plate is formed with a mounting groove, the protective plate is arranged in the mounting groove, and the bottom wall of the mounting groove is the box wall.

[0018] The installation groove is provided to limit the position of the protective plate, and the protective plate can be connected to the groove wall of the installation groove by bonding, so that the protective plate can be stably and reliably installed in the installation groove. In addition, the installation groove is also convenient for positioning the installation of the protective plate, making the installation of the protective plate faster and improving the installation efficiency of the protective plate.

[0019] In some embodiments, the protective plate is detachably connected to the upper shell.

[0020] By providing a detachable connection between the protective plate and the upper shell, the protective plate can be removed from the upper shell, which is convenient for replacing the protective plate when it is worn. It is also convenient to replace different protective plates according to the number and arrangement of batteries, making the use of the protective plate more convenient and improving the flexibility of use of the protective plate.

[0021] In some embodiments, the protective plate is screwed to the upper shell.

[0022] The threaded connection can achieve self-locking, making the connection between the protective plate and the upper shell tight and reliable, strengthening the connection strength between the protective plate and the upper shell, improving the connection reliability between the protective plate and the upper shell, and improving the structural stability of the battery.

[0023] In some embodiments, the protective plate is riveted to the upper shell.

[0024] The protective plate and the upper shell are riveted by rivets, which can be riveted by any of the following methods: pull riveting, press riveting or expansion riveting. Riveting has the advantages of high connection strength, good tightness, not easy to loosen, reliable impact load bearing, high efficiency, low noise and simple operation.

[0025] In some embodiments, the protective plate is bonded to the battery cell.

[0026] By bonding, the battery cells can be stably and reliably fixed on the protective plate, thereby improving the connection stability between the battery cells and the protective plate, reducing the probability of horizontal movement of the battery cells, reducing scratches on the bottom of the battery cells, improving the safety and reliability of the battery, and extending the battery life.

[0027] In some embodiments, there are multiple battery cells, and the multiple battery cells are stacked along a first direction. The number of exhaust holes is consistent with the number of battery cells and is arranged one-to-one. The multiple exhaust holes are arranged in an array along the first direction to form an exhaust hole group.

[0028] There are multiple battery cells, and the multiple battery cells are stacked along the first direction. By setting multiple numbers of battery cells, the number of battery cells can be adjusted according to actual conditions to suit different application scenarios. The number of exhaust holes is consistent with the number of battery cells and is set one-to-one. The position of the explosion-proof valve of each battery cell is correspondingly provided with an exhaust hole, so that the explosion-proof valve of each battery cell can quickly discharge gas.

[0029] In some embodiments, the protective plate includes a plurality of exhaust hole groups, and the plurality of exhaust hole groups are spaced apart along a second direction, and the second direction is perpendicular to the first direction.

[0030] Multiple groups of exhaust holes are arranged at intervals along the front-to-back direction, and each group of exhaust holes includes multiple exhaust holes arranged at intervals along the left-to-right direction, that is, multiple exhaust holes are arranged in an array, and the exhaust holes are arranged one-to-one corresponding to the battery cells, so that multiple battery cells can be evenly distributed, and a certain distance is maintained between two adjacent battery cells, so that the force on the box can be more uniform.

[0031] According to some embodiments of the present application, the present application provides a vehicle, the vehicle includes the battery as described above, and the protective plate is located between the battery cell and the ground. Since the vehicle includes all embodiments of all technical solutions of the above battery, it has at least all the beneficial effects brought by all the above embodiments, which will not be described one by one here.

[0032] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0034] Figure 1 A schematic diagram of the structure of a vehicle according to some embodiments of the present application;

[0035] Figure 2 A schematic diagram of the exploded structure of a battery according to some embodiments of the present application;

[0036] Figure 3 This is a schematic diagram of the structure of batteries in some embodiments of the present application;

[0037] Figure 4This is a schematic diagram of the structure of a protective plate in a battery in some embodiments of the present application;

[0038] Figure 5 for Figure 4 A schematic diagram of the structure from one perspective;

[0039] Figure 6 This is a schematic diagram of the structure of a protective plate in a battery in some other embodiments of the present application;

[0040] Figure 7 for Figure 5 A schematic diagram of the structure from one perspective;

[0041] Figure 8 A schematic diagram of a connection structure of a protective plate in a battery according to some embodiments of the present application;

[0042] Fig. 9 This is another schematic diagram of the connection structure of the protective plate in the battery in some embodiments of the present application;

[0043] Fig.10 This is a schematic diagram of the structure of a battery cell in a battery according to some embodiments of the present application.

[0044] The reference numerals in the specific implementation manner are as follows:

[0045] 1000. Vehicles;

[0046] 100, battery; 200, controller; 300, motor;

[0047] 1. Box body; 11. Upper shell; 110. Second connecting hole; 12. Bottom guard plate; 121. Mounting groove; 1211. Box wall; 13. Accommodating cavity;

[0048] 2. protective plate; 21. exhaust hole; 22. exhaust groove; 23. hollow cavity; 24. first connecting hole;

[0049] 3. Bolt; 31. Screw; 32. End cap;

[0050] 4. Battery cell; 41. Electrode end; 42. Explosion-proof valve. DETAILED DESCRIPTION

[0051] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0053] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0054] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0055] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0056] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0057] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application 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 should not be understood as a limitation on the embodiments of the present application.

[0058] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0059] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0060] The power battery is provided with a plurality of batteries, each of which includes a box body and a plurality of battery cells arranged in the box body. The box body serves to contain and protect the battery cells. Most batteries are installed under the floor of the electric vehicle. The bottom surface of the battery is large and is not protected by the body structure. Therefore, during the driving process of the electric vehicle, the part that is most likely to be scratched, hit and damaged is the bottom of the battery. The bottom scraping condition refers to the horizontal scraping of the bottom of the battery cell. The damage to the battery cell caused by this scraping is destructive and can cause fire and explosion, seriously endangering the safety of life and property. An explosion-proof valve is provided on each battery cell. The explosion-proof valve is used to open and release gas or heat when the battery cell generates a large amount of gas or heat due to thermal runaway, so as to reduce the probability of explosion or fire. Studies have found that the discharge speed of the airflow of the explosion-proof valve is related to the safety of battery use.

[0061] The battery disclosed in the embodiments of the present application can be used in an electrical device that uses the battery as a power source or in various energy storage systems that use the battery as an energy storage element. The electrical device can be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like. Among them, the electric toy can include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, and an electric airplane toy, and the like, and the spacecraft can include an airplane, a rocket, a space shuttle, and a spacecraft, and the like.

[0062] For the convenience of description, the following embodiments are described by taking a vehicle 1000 according to an embodiment of the present application as an example.

[0063] Please refer to Figure 1 , Figure 1A schematic diagram of the structure of a vehicle 1000 provided for some embodiments of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 1000 is provided inside the vehicle 1000, and the battery 1000 may be provided at the bottom, head or tail of the vehicle 1000. The battery 1000 may be used to power the vehicle 1000, for example, the battery 1000 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery 1000 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0064] In some embodiments of the present application, the battery 1000 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0065] Reference Figure 1 According to some embodiments of the present application, the present application provides a battery 100, including a battery cell 4, a box body 1 and a protective plate 2, the battery cell 4 has an explosion-proof valve 42; the battery cell 4 is accommodated in the box body 1, the box body 1 has a box wall, and the explosion-proof valve 42 faces the box wall; the protective plate 2 is located between the battery cell 4 and the box wall and is used to cover the battery cell 4, the protective plate 2 is provided with an exhaust hole 21 at the position corresponding to the explosion-proof valve 42, and the exhaust hole 21 passes through the protective plate 2; when the battery 100 is installed on the vehicle 1000, the protective plate 2 is located between the battery cell 4 and the ground.

[0066] The box body 1 is used to accommodate the battery cell 4, and the box body 1 plays the role of accommodating the battery cell 4 and protecting the battery cell 4. An explosion-proof valve 42 is provided on the battery cell 4, and the explosion-proof valve 42 is located in the middle of the two electrode ends 41 of the battery cell 4. The explosion-proof valve 42 is used to open and release gas or heat when the battery cell 4 generates a large amount of gas or heat due to thermal runaway, so as to reduce the probability of explosion or fire. The protective plate 2 extends in the horizontal direction, and the protective plate 2 is located between the battery cell 4 and the box wall of the box body 1. The upper end of the protective plate 2 is connected to the battery cell 4 and covers the battery cell 4. The lower end of the protective plate 2 is connected to the box wall. The battery cell 4 is fixed by setting the protective plate 2, and the bottom of the battery cell 4 is separated from the box wall, so as to reduce the horizontal movement of the battery cell 4 relative to the box wall. The protective plate 2 is provided with an exhaust hole 21, and the exhaust hole 21 extends through the protective plate 2 in the vertical direction. The exhaust hole 21 corresponds to the position of the explosion-proof valve 42 in the battery cell 4. By opening the exhaust hole 21 on the protective plate 2, the gas in the explosion-proof valve 42 can be quickly discharged, thereby reducing the risk of thermal runaway.

[0067] By setting the protective plate 2 between the battery cell 4 and the box wall, the protective plate 2 fixes the battery cell 4, reduces the movement of the bottom of the battery cell 4 relative to the box wall, reduces the probability of the bottom of the battery cell 4 being scratched, improves the safety and reliability of the battery 100, and improves the self-protection performance of the battery 100. In addition, the protective plate 2 is provided with an exhaust hole 21 at the position corresponding to the explosion-proof valve 42 of the battery cell 4, which can quickly discharge the gas in the explosion-proof valve 42 and reduce the risk of thermal runaway.

[0068] Reference Figure 1 , Figures 4 to 7 In some embodiments, a venting groove 22 communicating with the venting hole 21 is formed on a side of the protective plate 2 facing away from the battery cell 4 , and the venting groove 22 extends along the first direction and passes through the protective plate 2 .

[0069] The first direction is the length direction of the protective plate 2. The protective plate 2 is formed with an exhaust groove 22. The exhaust groove 22 extends along the length direction of the protective plate 2. The exhaust groove 22 is located on the side of the protective plate 2 away from the battery cell 4, that is, the exhaust groove 22 is located on the lower side of the protective plate 2, and the exhaust groove 22 is connected with the exhaust hole 21. The exhaust groove 22 passes through the protective plate 2.

[0070] After the gas in the explosion-proof valve 42 enters the exhaust hole 21, the exhaust hole 21 is connected to the exhaust groove 22, and the gas in the exhaust hole 21 enters the exhaust groove 22. The exhaust groove 22 penetrates the protective plate 2, and the gas in the exhaust groove 22 enters the box body 1. By providing the exhaust groove 22, the internal exhaust capacity of the battery 100 is improved, the exhaust efficiency is improved, and the risk of thermal runaway is further reduced. In addition, the exhaust groove 22 is located on the lower side of the protective plate 2, and the position of the exhaust groove 22 corresponds to the direction of gas ejection, so that the gas can quickly enter the exhaust groove 22, further improving the exhaust efficiency.

[0071] Reference Figure 5 and Figure 7 In some embodiments, along the axial direction of the exhaust hole 21, the height dimension of the protective plate 2 is greater than 0.1 mm and less than 50 mm.

[0072] At the location of the exhaust hole 21, along the axial direction of the exhaust hole 21, the height dimension of the protective plate 2 is H, and the height dimension of the protective plate 2 is greater than 0.1mm and less than 50mm, that is, 0.1mm<H<50mm. The height dimension of the protective plate 2 is greater than 0.1mm. If the height dimension of the protective plate 2 is less than 0.1mm, the height dimension of the protective plate 2 is too small, which may cause the structural strength of some parts of the protective plate 2 to be weak, resulting in damage to the protective plate 2. In addition, the height dimension of the protective plate 2 is less than 50mm. If the height dimension of the protective plate 2 is greater than 50mm, the thickness of the protective plate 2 is too large, which may cause the protective plate 2 to occupy a large amount of space in the box 1.

[0073] By limiting the height dimension of the protective plate 2 along the axial direction of the exhaust hole 21 to between 0.1 mm and 50 mm, the protective plate 2 has appropriate structural strength, can support the battery cell 4, reduce scratches on the bottom of the battery cell 4, and effectively protect the battery cell 4 under scraping conditions. In addition, the space occupied by the protective plate 2 in the box 1 and the weight of the protective plate 2 are reasonably limited, so that the battery 100 can be lighter.

[0074] Reference Figure 5 and Figure 7 In some embodiments, along the axial direction of the exhaust hole 21, the height dimension of the protective plate 2 is greater than or equal to 0.5 mm and less than or equal to 10 mm.

[0075] Along the axial direction of the exhaust hole 21 , the height dimension of the protective plate 2 is greater than or equal to 0.5 mm, and the height dimension of the protective plate 2 is less than or equal to 10 mm, that is, 0.5 mm≤H≤10 mm.

[0076] The height dimension of the protective plate 2 is further limited so that the protective plate 2 has appropriate structural strength, can effectively protect the bottom of the battery cell 4 under bottom scraping conditions, protect the battery cell 4, and limit the space occupied by the protective plate 2 in the box body 1. At the same time, the weight of the protective plate 2 can also be limited.

[0077] Of course, the material of the protective plate 2 will also have a certain impact on the structural strength of the protective plate 2. In this embodiment, the material of the protective plate 2 is a composite material, which improves the structural strength of the protective plate 2.

[0078] Reference Figure 4 and Figure 5 In some embodiments, the protective plate 2 has a hollow cavity 23 , the hollow cavity 23 penetrates the protective plate 2 along the first direction, and the exhaust hole 21 is connected to the hollow cavity 23 .

[0079] The first direction is the length direction of the protective plate 2. The protective plate 2 has a hollow cavity 23. The hollow cavity 23 extends in the horizontal direction. The hollow cavity 23 penetrates the protective plate 2 in the first direction. The exhaust hole 21 is connected with the hollow cavity 23. The hole walls on both sides of the exhaust hole 21 are provided with connecting ports. The exhaust hole 21 is connected with the hollow cavity 23 through the connecting ports. The size of the connecting ports can be flexibly adjusted according to actual needs. After the gas in the explosion-proof valve 42 enters the exhaust hole 21, the exhaust hole 21 is connected with the hollow cavity 23, the gas in the exhaust hole 21 enters the hollow cavity 23, and the gas in the hollow cavity 23 enters the box body 1.

[0080] By providing the hollow cavity 23, the gas in the exhaust hole 21 can enter the hollow cavity 23, and the hollow cavity 23 provides a larger air release space for the explosion-proof valve 42, thereby improving the exhaust efficiency of the battery 100. In addition, the provision of the hollow cavity 23 makes the protective plate 2 lighter, which can reduce the weight of the battery 100 and facilitate the installation and removal of the battery 100.

[0081] In other embodiments, reference Figure 6 and Figure 7 The protective plate 2 can be a solid structure without a hollow cavity 23. By providing the exhaust groove 22, the internal exhaust capacity of the battery 100 is improved, the exhaust efficiency is improved, and the risk of thermal runaway is further reduced.

[0082] Reference Figure 1 In some embodiments, the box body 1 includes an upper shell 11 and a bottom guard plate 12. The upper shell 11 cooperates with the bottom guard plate 12 to form a accommodating cavity 13. The battery cell 4 is accommodated in the accommodating cavity 13. A side wall of the bottom guard plate 12 facing the upper shell 11 is a box wall. The protective plate 2 is arranged on the bottom guard plate 12, and the battery cell 4 is arranged between the protective plate 2 and the upper shell 11.

[0083] The upper shell 11 and the bottom guard plate 12 cover each other, and the upper shell 11 and the bottom guard plate 12 jointly define a receiving cavity 13 for accommodating the battery cell 4. The upper shell 11 is a hollow structure with one end open, and the bottom guard plate 12 is a plate-like structure. The side wall of the bottom guard plate 12 facing the upper shell 11 is a box wall. The bottom guard plate 12 covers the open side of the upper shell 11, so that the bottom guard plate 12 and the upper shell 11 jointly define the receiving cavity 13, and the outer edge of the bottom guard plate 12 is connected to the upper shell 11, so that the connection between the bottom guard plate 12 and the upper shell 11 is stable and reliable. The protective plate 2 is arranged on the bottom guard plate 12, and the lower end of the protective plate 2 is connected to the bottom guard plate 12. The battery cell 4 is arranged between the protective plate 2 and the upper shell 11, the lower end of the battery cell 4 is connected to the protective plate 2, and the upper end of the battery cell 4 abuts against the upper shell 11, thereby realizing the installation and fixation of the battery cell 4.

[0084] The upper shell 11 and the bottom guard plate 12 are matched to define a receiving cavity 13, so that the battery cell 4 and the protective plate 2 can be conveniently received in the receiving cavity 13, thereby protecting and receiving the battery cell 4. The battery cell 4 is arranged between the protective plate 2 and the upper shell 11, so as to limit the vertical position of the battery cell 4, reduce the horizontal movement of the battery cell 4 relative to the bottom guard plate 12, and reduce the probability of scratching the bottom of the battery cell 4.

[0085] Reference Figure 8 In some embodiments, the bottom guard plate 12 is formed with a mounting groove 121, the protective plate 2 is arranged in the mounting groove 121, and the bottom wall of the mounting groove 121 is a box wall.

[0086] A mounting groove 121 is formed in the middle of the bottom guard plate 12 . The mounting groove 121 extends in the vertical direction and is recessed downward. The protective plate 2 is arranged in the mounting groove 121 . The mounting groove 121 is used to accommodate the protective plate 2 . The depth of the mounting groove 121 is adapted to the thickness of the protective plate 2 .

[0087] The installation groove 121 is provided to limit the protective plate 2, and the protective plate 2 can be connected to the groove wall of the installation groove 121 by bonding, so that the protective plate 2 can be stably and reliably installed in the installation groove 121. In addition, the installation groove 121 is also convenient for positioning the installation of the protective plate 2, so that the installation of the protective plate 2 is faster and the installation efficiency of the protective plate 2 is improved.

[0088] Reference Figure 1 and Fig. 9 In some embodiments, the protective plate 2 is detachably connected to the upper shell 11.

[0089] By providing a detachable connection between the protective plate 2 and the upper shell 11, the protective plate 2 can be removed from the upper shell 11, which is convenient for replacing the protective plate 2 when it is worn. It is also convenient to replace different protective plates 2 according to the number and arrangement of batteries 1000, making the use of the protective plate 2 more convenient and improving the flexibility of use of the protective plate 2.

[0090] Reference Fig. 9 In some embodiments, the protective plate 2 is screwed to the upper shell 11 .

[0091] The protective plate 2 and the upper shell 11 can be screwed together by bolts 3. The number of bolts 3 is at least one. Specifically, the protective plate 2 is formed with a first connection hole 24, and the upper shell 11 is formed with a second connection hole 110 at a position corresponding to the first connection hole 24. The second connection hole 110 is a threaded hole, and the bolt 3 includes a screw rod 31 and an end cap 32 connected to each other. The screw rod 31 of the bolt 3 passes through the first connection hole 24 from the side of the protective plate 2 away from the battery cell 4, extends into the second connection hole 110 and is threadedly connected to the second connection hole 110, and the end cap 32 of the bolt 3 is tightly pressed against the protective plate 2, so that the connection between the protective plate 2 and the upper shell 11 is stable and reliable.

[0092] The threaded connection can achieve self-locking, so that the connection between the protective plate 2 and the upper shell 11 is tight and reliable, thereby strengthening the connection strength between the protective plate 2 and the upper shell 11, improving the connection reliability between the protective plate 2 and the upper shell 11, and improving the structural stability of the battery 100.

[0093] In addition, when the number of bolts 3 is multiple, the multiple bolts 3 are arranged at intervals and are all used to connect the protective plate 2 and the upper shell 11, which not only increases the connection strength but also improves the structural stability of the battery 100. Figure 1 and Figure 4The number of the bolts 3 can be two, and the two bolts 3 are arranged at intervals along the length direction of the protective plate 2. The two bolts 3 are respectively located on both sides of the protective plate 2, so that the protective plate 2 can be stably connected to the upper shell 11.

[0094] Reference Figure 1 and Figure 6 The number of bolts 3 can also be four, and the four bolts 3 are respectively located at the four top corners of the protective plate 2, so that the four corners of the protective plate 2 can be connected to the upper shell 11, and the force is evenly applied, thereby improving the connection strength between the protective plate 2 and the upper shell 11.

[0095] When the number of battery cells 4 is large, multiple protective plates 2 can be set to support the battery cells 4. Each protective plate 2 is detachably connected to the upper shell 11. The number and type of protective plates 2 can be flexibly adjusted according to the arrangement of the number of battery cells 4, making the use of protective plates 2 more flexible and convenient.

[0096] Reference Fig. 9 In some embodiments, the protective plate 2 is riveted to the upper shell 11 .

[0097] The protective plate 2 and the upper shell 11 are riveted by rivets, which can be riveted by any of the following methods: pull riveting, press riveting or expansion riveting. Riveting has the advantages of high connection strength, good tightness, not easy to loosen, reliable impact load bearing, high efficiency, low noise, and simple operation.

[0098] Reference Figure 8 In some embodiments, the protective plate 2 is bonded to the battery cell 4 .

[0099] The top of the protective plate 2 is bonded to the battery cell 4, so that the battery cell 4 is fixed on the protective plate 2. Specifically, the top of the protective plate 2 can be bonded to the battery cell 4 by glue such as structural glue and double-sided adhesive.

[0100] By bonding, the battery cell 4 can be stably and reliably fixed on the protective plate 2, thereby improving the connection stability between the battery cell 4 and the protective plate 2, reducing the probability of horizontal movement of the battery cell 4, reducing scratches on the bottom of the battery cell 4, improving the safety and reliability of the battery 100, and extending the service life of the battery 100.

[0101] Reference Figure 1 In some embodiments, the first direction is the length direction of the protective plate 2.

[0102] There are multiple battery cells 4, which are stacked along the first direction. The number of exhaust holes 21 is consistent with the number of battery cells 4 and is arranged one-to-one. The exhaust holes 21 are arranged in an array along the first direction to form an exhaust hole group.

[0103] There are multiple battery cells 4, and multiple battery cells 4 are stacked along the first direction. By setting multiple numbers of battery cells 4, the number of battery cells 4 can be adjusted according to actual conditions to suit different application scenarios. The number of exhaust holes 21 is consistent with the number of battery cells 4 and is set one-to-one. The position of the explosion-proof valve 42 of each battery cell 4 is correspondingly provided with an exhaust hole 21, so that the explosion-proof valve 42 of each battery cell 4 can quickly discharge gas.

[0104] Multiple battery cells 4 can be connected in series, in parallel or in hybrid connection. Hybrid connection means that multiple battery cells 4 are connected in series and in parallel. Multiple battery cells 4 can be directly connected in series, in parallel or in hybrid connection, and then the whole formed by multiple battery cells 4 is accommodated in the battery 100; of course, the battery 1000 can also be a battery module formed by connecting multiple battery cells 4 in series, in parallel or in hybrid connection, and then multiple battery modules are connected in series, in parallel or in hybrid connection to form a whole, and accommodated in the battery 100. The battery 1000 can also include other structures, for example, the battery 1000 can also include a converging component for realizing electrical connection between multiple battery cells 4.

[0105] Each battery cell 4 may be a secondary battery or a primary battery; it may also be a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but is not limited thereto. The battery cell 4 may be cylindrical, flat, rectangular or in other shapes. It should be noted that: Figure 1 The battery cell 4 is square in shape, but in fact the battery cell 4 can be a cylindrical battery cell 4 or a square battery cell 4 .

[0106] Reference Figure 1 In some embodiments, the first direction is the length direction of the protective plate 2 , and the second direction is the width direction of the protective plate 2 .

[0107] The protection plate 2 includes a plurality of exhaust hole groups, and the plurality of exhaust hole groups are arranged at intervals along a second direction, and the second direction is perpendicular to the first direction.

[0108] Multiple groups of exhaust holes are arranged at intervals along the front-to-back direction, and each group of exhaust holes includes multiple exhaust holes 21 arranged at intervals along the left-to-right direction, that is, multiple exhaust holes 21 are arranged in an array, and the exhaust holes 21 are arranged one-to-one with the battery cells 4, so that multiple battery cells 4 can be evenly distributed, and a certain distance is maintained between two adjacent battery cells 4, so that the force on the box body 1 can be more uniform.

[0109] Reference Figure 1In some embodiments, the upper shell 11 cooperates with the bottom guard plate 12 to form a receiving cavity 13, and the bottom of the battery cell 4 is bonded to the protective plate 2, so as to fix the battery cell 4. The protective plate 2 is detachably connected to the upper shell 11, so as to fix the protective plate 2 on the upper shell 11. The protective plate 2 is located between the battery cell 4 and the bottom guard plate 12. The protective plate 2 separates the battery cell 4 from the bottom guard plate 12, and fixes the battery cell 4, reduces the horizontal movement of the battery cell 4, reduces the probability of scratching the bottom of the battery cell 4, and effectively protects the battery cell 4. The protective plate 2 is provided with an exhaust hole 21 corresponding to the position of the explosion-proof valve 42 of the battery cell 4, and an exhaust groove 22 is provided on the protective plate 2, and the exhaust groove 22 is connected with the exhaust hole 21 and the receiving cavity 13. After the gas in the explosion-proof valve 42 enters the corresponding exhaust hole 21, the exhaust hole 21 is connected with the exhaust groove 22, the gas in the exhaust hole 21 enters the exhaust groove 22, the exhaust groove 22 is connected with the accommodating chamber 13, and the gas in the exhaust groove 22 enters the accommodating chamber 13. By setting the exhaust hole 21 and the exhaust groove 22, the internal exhaust capacity of the battery 100 is improved, the exhaust efficiency is improved, and the risk of thermal runaway is further reduced.

[0110] According to some embodiments of the present application, the present application provides a battery 1000, and the battery 1000 includes the battery described above. Since the vehicle includes all embodiments of all technical solutions of the battery 1000, it has at least all the beneficial effects brought by all the above embodiments, which will not be described one by one here.

[0111] According to some embodiments of the present application, the present application provides a vehicle, the vehicle includes a housing, and a mounting position is provided in the housing, and the mounting position is used to install the above-mentioned battery 1000. Since the vehicle includes all embodiments of all technical solutions of the above-mentioned battery 1000, it has at least all the beneficial effects brought by all the above-mentioned embodiments, which will not be repeated here one by one.

[0112] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery for a vehicle, characterized in that: The battery comprises: A battery cell, wherein the battery cell has an explosion-proof valve; A box body, wherein the battery monomer is accommodated in the box body, the box body has a box wall, and the explosion-proof valve faces the box wall; A protective plate is located between the battery cell and the box wall and is used to cover the battery cell. The protective plate is provided with an exhaust hole corresponding to the position of the explosion-proof valve, and the exhaust hole passes through the protective plate. When the battery is installed in a vehicle, the protective plate is located between the battery cell and the ground.

2. The battery according to claim 1, characterized in that An exhaust groove connected to the exhaust hole is formed on a side of the protection plate away from the battery cell, and the exhaust groove extends along a first direction and passes through the protection plate.

3. The battery according to claim 1, characterized in that Along the axial direction of the exhaust hole, the height dimension of the protective plate is greater than 0.1 mm and less than 50 mm.

4. The battery according to claim 3, characterized in that Along the axial direction of the exhaust hole, the height dimension of the protective plate is greater than or equal to 0.5 mm and less than or equal to 10 mm.

5. The battery according to any one of claims 1 to 4, characterized in that The protective plate has a hollow cavity, the hollow cavity penetrates the protective plate along a first direction, and the exhaust hole is communicated with the hollow cavity.

6. The battery according to any one of claims 1 to 4, characterized in that The box body includes an upper shell and a bottom guard plate, the upper shell cooperates with the bottom guard plate to form a accommodating cavity, the battery cell is accommodated in the accommodating cavity, a side wall of the bottom guard plate facing the upper shell is the box wall, the protective plate is arranged on the bottom guard plate, and the battery cell is arranged between the protective plate and the upper shell.

7. The battery according to claim 6, characterized in that The bottom guard plate is formed with a mounting groove, the protective plate is arranged in the mounting groove, and the bottom wall of the mounting groove is the box wall.

8. The battery according to claim 6, characterized in that The protective plate is detachably connected to the upper shell.

9. The battery according to claim 8, characterized in that The protective plate is screwed to the upper shell.

10. The battery according to claim 8, characterized in that The protective plate is riveted to the upper shell.

11. The battery according to any one of claims 1 to 4, characterized in that The protection plate is bonded to the battery cell.

12. The battery according to any one of claims 1 to 4, characterized in that There are multiple battery cells, which are stacked along a first direction. The number of exhaust holes is consistent with the number of battery cells and are arranged one-to-one. The exhaust holes are arranged in an array along the first direction to form an exhaust hole group.

13. The battery according to claim 12, characterized in that The protective plate includes a plurality of exhaust hole groups, and the plurality of exhaust hole groups are arranged at intervals along a second direction, and the second direction is perpendicular to the first direction.

14. A vehicle, characterized in that: The vehicle comprises the battery according to any one of claims 1 to 13, and the protection plate is located between the battery cells and the ground.

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