Battery and vehicle

Abstract

Provided in the present application are a battery and a vehicle. The battery comprises battery cells, a box body and a protection plate, the battery cells being provided with explosion-proof valves. The battery cells are accommodated in the box body, the box body being provided with a box wall, and the explosion-proof valves facing the box wall. The protection plate is located between the battery cells and the box wall and is arranged to cover the battery cells, exhaust holes being formed in the positions of the protection plate corresponding to the explosion-proof valves, and the exhaust holes penetrating through the protection plate. When the battery is installed on a vehicle, the protection plate is located between the battery cells and the ground. Providing between the battery cells and the box wall of the battery the protection plate for fixing the battery cells reduces the movement of the bottoms of the battery cells relative to the box wall, thus reducing the probability of scraping the bottoms of the battery cells, improving the safety and reliability of the battery, and enhancing the self-protection performance of the battery. Moreover, the exhaust holes are formed in the positions of the protection plate corresponding to the explosion-proof valves of the battery cells, such that gas in the explosion-proof valves can be quickly discharged, thereby reducing the risk of thermal runaway.

Description

Batteries and vehicles

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on January 15, 2024, with application number 202420095909.9 and invention name “Battery and Vehicle”, the entire contents of which are incorporated by reference into the application. Technical Field

[0002] The present application relates to the technical field of lithium batteries, and in particular to a battery and a vehicle. Background Art

[0003] 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.

[0004] In view of this, a new battery and vehicle are provided to improve the battery's own protection performance.

[0005] Utility Model Content

[0006] 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.

[0007] 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, wherein the battery cell has 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 configured to cover the battery cell, and 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.

[0008] By installing a protective plate between the battery cells and the box wall, the protective plate secures the battery cells, reducing the movement of the battery cell bottom relative to the box wall and the chance of the battery cell bottom being scraped, thereby improving the battery's safety and reliability and enhancing its inherent protection performance. Furthermore, the protective plate features vent holes corresponding to the battery cell's explosion-proof valve, which quickly expel gas from the valve and reduce the risk of thermal runaway.

[0009] 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.

[0010] After the gas in the explosion-proof valve enters the corresponding exhaust hole, the exhaust hole connects to the exhaust groove. The gas in the exhaust hole enters the exhaust groove, which penetrates the protective plate and enters the box. The provision of the exhaust groove improves the internal exhaust capacity of the battery, improves exhaust efficiency, and further reduces the risk of thermal runaway. In addition, the exhaust groove is located on the lower side of the protective plate and its position corresponds to the direction of gas ejection, allowing gas to quickly enter the exhaust groove, further improving exhaust efficiency.

[0011] In some embodiments, along the axial direction of the exhaust hole, the height of the protective plate is greater than 0.1 mm and less than 50 mm.

[0012] By limiting the height of the protective plate along the axis 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 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.

[0013] In some embodiments, along the axial direction of the exhaust hole, the height of the protective plate is greater than or equal to 0.5 mm and less than or equal to 10 mm.

[0014] The height of the protective plate is further limited so that the protective plate has appropriate structural strength, which can effectively protect the bottom of the battery cell under 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.

[0015] In some embodiments, the protective plate has a hollow cavity, the hollow cavity passes through the protective plate along a first direction, and the exhaust hole is connected to the hollow cavity.

[0016] The hollow cavity allows gas from the vent to flow into the chamber, providing a larger space for the explosion-proof valve to release air, improving the battery's exhaust efficiency. Furthermore, the hollow cavity makes the protective plate lighter, reducing the battery's mass and facilitating its installation and removal.

[0017] 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, the 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.

[0018] The upper shell and bottom guard plate cooperate to define a chamber that allows the battery cells and the guard plate to be easily accommodated within the chamber, protecting and accommodating the battery cells. The battery cells are positioned between the guard plate and the upper shell to limit their vertical position, reducing their horizontal movement relative to the bottom guard plate and minimizing the chance of scratches on the bottom of the battery cells.

[0019] 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.

[0020] The installation slots serve to limit the position of the protective plate, allowing the protective plate to be bonded to the slot walls via adhesive, allowing the protective plate to be stably and reliably installed within the slots. Furthermore, the installation slots facilitate positioning of the protective plate, making installation of the protective plate faster and improving installation efficiency.

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

[0022] By setting up 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.

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

[0024] 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.

[0025] In some embodiments, the protective plate is riveted to the upper shell.

[0026] The protective plate and upper shell are riveted together using rivets, which can be achieved by pull riveting, press riveting, or expansion riveting. Riveting offers advantages such as high connection strength, good tightness, resistance to loosening, reliable impact load resistance, high efficiency, low noise, and simple operation.

[0027] In some embodiments, the protective plate is bonded to the battery cell.

[0028] By bonding, the battery cells can be stably and reliably fixed on the protective plate, 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.

[0029] In some embodiments, the number of the battery cells is multiple, and the multiple battery cells are stacked along the first direction. The number of the exhaust holes is consistent with the number of the 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.

[0030] The battery cells are stacked in a first direction, allowing the number of cells to be adjusted to suit different application scenarios. The number of vents matches the number of cells and is arranged in a one-to-one correspondence. Each cell's explosion-proof valve is positioned at a corresponding vent, enabling each cell's explosion-proof valve to quickly discharge gas.

[0031] 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.

[0032] 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. The exhaust holes are arranged in a one-to-one correspondence with the battery cells, so that the 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.

[0033] According to some embodiments of the present application, a vehicle is provided, comprising the battery described above, wherein the protective plate is positioned between the battery cells and the ground. Because the vehicle includes all embodiments of the technical solutions for the battery described above, it possesses at least all the beneficial effects of all the aforementioned embodiments, which are not further detailed here.

[0034] 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

[0035] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0036] FIG1 is a schematic structural diagram of a vehicle according to some embodiments of the present application;

[0037] FIG2 is a schematic diagram of the exploded structure of a battery according to some embodiments of the present application;

[0038] FIG3 is a schematic structural diagram of batteries according to some embodiments of the present application;

[0039] FIG4 is a schematic diagram of the structure of a protective plate in a battery in some embodiments of the present application;

[0040] FIG5 is a schematic structural diagram of FIG4 from a viewing angle;

[0041] FIG6 is a schematic diagram of the structure of a protective plate in a battery in some other embodiments of the present application;

[0042] FIG7 is a schematic structural diagram of FIG5 from a viewing angle;

[0043] FIG8 is a schematic diagram of a connection structure of a protective plate in a battery according to some embodiments of the present application;

[0044] FIG9 is a schematic diagram of another connection structure of a protective plate in a battery according to some embodiments of the present application;

[0045] FIG10 is a schematic diagram of the structure of a battery cell in a battery according to some embodiments of the present application.

[0046] The accompanying drawings in the specific implementation manner are as follows:

[0047] 1000. Vehicle;

[0048] 100, battery; 200, controller; 300, motor;

[0049] 1. Box body; 11. Upper shell; 110. Second connection hole; 12. Bottom guard plate; 121. Mounting slot; 1211. Box wall; 13. Accommodation cavity;

[0050] 2. Protective plate; 21. Exhaust hole; 22. Exhaust slot; 23. Hollow cavity; 24. First connecting hole;

[0051] 3. Bolt; 31. Screw; 32. End cap;

[0052] 4. Battery cell; 41. Electrode terminal; 42. Explosion-proof valve. DETAILED DESCRIPTION

[0053] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art 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" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0055] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0056] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0057] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0058] 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).

[0059] 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., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and 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 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 embodiments of the present application.

[0060] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0061] Currently, market developments indicate that power batteries are becoming increasingly widely used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As power battery applications continue to expand, market demand is also growing.

[0062] A power battery is equipped with multiple cells, each of which includes a housing and multiple battery cells arranged in the housing. The housing serves to accommodate and protect the battery cells. Most batteries are installed under the floor of an electric vehicle. The bottom surface of the battery is large and is not protected by the body structure. Therefore, the part of the electric vehicle that is most susceptible to scratches, collisions, and damage during driving 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 fires and explosions that seriously endanger the safety of life and property. Each battery cell is equipped with an explosion-proof valve. The explosion-proof valve is set to open and release gas or heat when the battery cell thermal runaway generates a large amount of gas or heat, so as to reduce the probability of explosion or fire. Studies have found that the discharge speed of the airflow from the explosion-proof valve is related to the safety of battery use.

[0063] The battery disclosed in the embodiments of the present application can be used in electrical devices that use the battery as a power source or 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 computer, 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 fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, and the like, and the spacecraft can include airplanes, rockets, space shuttles, and spacecraft, and the like.

[0064] 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.

[0065] Please refer to Figure 1, which is a structural diagram of a vehicle 1000 provided in some embodiments of the present application. The vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can 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 can be provided at the bottom, head or tail of the vehicle 1000. The battery 1000 can be used to power the vehicle 1000. For example, the battery 1000 can serve as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. 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.

[0066] In some embodiments of the present application, the battery 1000 can serve not only as an operating power source for the vehicle 1000, but also 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.

[0067] 1 , according to some embodiments of the present application, the present application provides a battery 100, comprising a battery cell 4, a box body 1 and a protective plate 2, wherein 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, and the protective plate 2 is provided with an exhaust hole 21 at a 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 a vehicle 1000, the protective plate 2 is located between the battery cell 4 and the ground.

[0068] The housing 1 houses and protects the battery cells 4. Each cell 4 is equipped with an explosion-proof valve 42, located between its two electrode terminals 41. This valve is designed to release gas or heat when thermal runaway occurs, thereby reducing the likelihood of explosion or fire. A protective plate 2 extends horizontally and is located between the battery cells 4 and the walls of the housing 1. The upper end of the protective plate 2 is connected to and covers the battery cells 4, while the lower end is connected to the walls. This secures the battery cells 4, separating their bottoms from the walls and minimizing horizontal movement relative to the walls. A vent 21 is defined in the protective plate 2, extending vertically through the plate and corresponding to the location of the explosion-proof valve 42 in the battery cells 4. By providing 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.

[0069] By installing a protective plate 2 between the battery cells 4 and the box wall, the protective plate 2 secures the battery cells 4, reduces movement of the bottom of the battery cells 4 relative to the box wall, and reduces the chance of the bottom of the battery cells 4 being scraped, thereby improving the safety and reliability of the battery 100 and enhancing the inherent protection performance of the battery 100. Furthermore, the protective plate 2 has vent holes 21 formed at locations corresponding to the explosion-proof valves 42 of the battery cells 4, which can quickly discharge gas from the explosion-proof valves 42, reducing the risk of thermal runaway.

[0070] 1 and 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 . The venting groove 22 extends along a first direction and passes through the protective plate 2 .

[0071] 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 to the exhaust hole 21. The exhaust groove 22 passes through the protective plate 2.

[0072] After the gas in explosion-proof valve 42 enters exhaust hole 21, exhaust hole 21 connects to exhaust groove 22. The gas in exhaust hole 21 enters exhaust groove 22, which penetrates protective plate 2. The gas in exhaust groove 22 enters the interior of box body 1. The provision of exhaust groove 22 improves the internal exhaust capacity of battery 100, improves exhaust efficiency, and further reduces the risk of thermal runaway. In addition, exhaust groove 22 is located on the lower side of protective plate 2. The position of exhaust groove 22 corresponds to the direction of gas ejection, allowing gas to quickly enter exhaust groove 22, further improving exhaust efficiency.

[0073] 5 and 7 , in some embodiments, along the axial direction of the exhaust hole 21 , the height of the protective plate 2 is greater than 0.1 mm and less than 50 mm.

[0074] 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 too much space in the box 1.

[0075] By limiting the height dimension of the protective plate 2 along the axis 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 the scratching of the bottom of the battery cell 4, and effectively protect the battery cell 4 under the bottom scraping condition. 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 more lightweight.

[0076] 5 and 7 , in some embodiments, along the axial direction of the exhaust hole 21 , the height of the protective plate 2 is greater than or equal to 0.5 mm and less than or equal to 10 mm.

[0077] Along the axial direction of the exhaust hole 21 , the height of the protective plate 2 is greater than or equal to 0.5 mm, and the height of the protective plate 2 is less than or equal to 10 mm, that is, 0.5 mm ≤ H ≤ 10 mm.

[0078] The height 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 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, it can also limit the weight of the protective plate 2.

[0079] 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.

[0080] 4 and 5 , in some embodiments, the protective plate 2 has a hollow cavity 23 , the hollow cavity 23 passes through the protective plate 2 along a first direction, and the exhaust hole 21 is connected to the hollow cavity 23 .

[0081] The first direction is the length of the protective plate 2. The protective plate 2 has a hollow cavity 23 extending horizontally and extending through the protective plate 2 along the first direction. The exhaust hole 21 is connected to the hollow cavity 23. Connecting openings are provided on the walls of the exhaust hole 21 on both sides. The exhaust hole 21 is connected to the hollow cavity 23 through the connecting openings. The size of the connecting openings 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 to 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 housing 1.

[0082] The hollow cavity 23 allows gas in the exhaust hole 21 to enter the hollow cavity 23, providing a larger space for the explosion-proof valve 42 to release gas, thereby improving the exhaust efficiency of the battery 100. Furthermore, the provision of the hollow cavity 23 makes the protective plate 2 more lightweight, reducing the weight of the battery 100 and facilitating installation and removal of the battery 100.

[0083] In other embodiments, referring to FIG6 and FIG7, the protective plate 2 may 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.

[0084] Referring to Figure 1, in some embodiments, the box body 1 includes an upper shell 11 and a bottom guard plate 12. The upper shell 11 and the bottom guard plate 12 cooperate to form a accommodating cavity 13. The battery cell 4 is accommodated in the accommodating cavity 13. The side wall of the bottom guard plate 12 facing the upper shell 11 is the 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.

[0085] The upper shell 11 and the bottom guard plate 12 cover each other, and together they define a housing 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 together define the housing cavity 13. The outer edge of the bottom guard plate 12 is connected to the upper shell 11, making the connection between the bottom guard plate 12 and the upper shell 11 stable and reliable. The protective plate 2 is disposed 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 disposed between the protective plate 2 and the upper shell 11, and the lower end of the battery cell 4 is connected to the protective plate 2. The upper end of the battery cell 4 abuts against the upper shell 11, thereby achieving the installation and fixation of the battery cell 4.

[0086] The upper shell 11 and the bottom guard plate 12 cooperate to define a receiving cavity 13, which facilitates the placement of the battery cell 4 and the protective plate 2 within the receiving cavity 13, thereby protecting and accommodating the battery cell 4. The battery cell 4 is positioned between the protective plate 2 and the upper shell 11, limiting its vertical position and reducing its horizontal movement relative to the bottom guard plate 12, thereby minimizing the chance of scratches on the bottom of the battery cell 4.

[0087] 8 , in some embodiments, the bottom guard plate 12 is formed with a mounting groove 121 , the protective plate 2 is disposed in the mounting groove 121 , and the bottom wall of the mounting groove 121 is a box wall.

[0088] 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.

[0089] The installation groove 121 serves to limit the position of the protective plate 2. 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 also facilitates the positioning of the installation of the protective plate 2, making the installation of the protective plate 2 faster and improving the installation efficiency of the protective plate 2.

[0090] 1 and 9 , in some embodiments, the protective plate 2 is detachably connected to the upper shell 11 .

[0091] 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.

[0092] 9 , in some embodiments, the protection plate 2 is screwed to the upper shell 11 .

[0093] 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 thereto. 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 pressed against the protective plate 2, so that the connection between the protective plate 2 and the upper shell 11 is stable and reliable.

[0094] 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.

[0095] Furthermore, when there are multiple bolts 3, they are spaced apart and all used to connect the protective plate 2 to the upper shell 11, which not only increases the connection strength but also improves the structural stability of the battery 100. Specifically, referring to Figures 1 and 4, the number of bolts 3 can be two, and the two bolts 3 are spaced apart along the length of the protective plate 2, and the two bolts 3 are located on either side of the protective plate 2, so that the protective plate 2 can be stably connected to the upper shell 11.

[0096] 1 and 6 , the number of bolts 3 may 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 distributed, thereby improving the connection strength between the protective plate 2 and the upper shell 11.

[0097] 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 the protective plates 2 more flexible and convenient.

[0098] 9 , in some embodiments, the protective plate 2 is riveted to the upper shell 11 .

[0099] The protective plate 2 and the upper shell 11 are riveted together by rivets, which can be riveted by pull riveting, press riveting or expansion riveting. Riveting has the advantages of high connection strength, good tightness, not easy to loosen, reliable impact load resistance, high efficiency, low noise and simple operation.

[0100] 8 , in some embodiments, the protection plate 2 is bonded to the battery cell 4 .

[0101] 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 or double-sided tape.

[0102] 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 the battery cell 4 moving horizontally, 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.

[0103] 1 , in some embodiments, the first direction is the length direction of the protective plate 2 .

[0104] 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.

[0105] There are multiple battery cells 4, which are stacked along a first direction. By providing multiple battery cells 4, the number of battery cells 4 can be adjusted according to actual conditions to suit different application scenarios. The number of vents 21 matches the number of battery cells 4 and is arranged in a one-to-one correspondence. The location of the explosion-proof valve 42 of each battery cell 4 corresponds to the vent 21, allowing the explosion-proof valve 42 of each battery cell 4 to quickly discharge gas.

[0106] Multiple battery cells 4 can be connected in series, in parallel, or in a hybrid configuration. A hybrid configuration refers to a combination of series and parallel connections within the multiple battery cells 4. Multiple battery cells 4 can be directly connected in series, in parallel, or in a hybrid configuration, and the entire structure of the multiple battery cells 4 can then be housed within the battery 100. Alternatively, the battery 1000 can be constructed by first connecting multiple battery cells 4 in series, in parallel, or in a hybrid configuration to form a battery module, which is then connected in series, in parallel, or in a hybrid configuration to form a single structure housed within the battery 100. The battery 1000 can also include other structures, such as a busbar assembly for electrically connecting the multiple battery cells 4.

[0107] Each battery cell 4 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 4 can be cylindrical, flat, rectangular, or in other shapes. It should be noted that while the battery cell 4 in FIG1 is square in shape, in practice, the battery cell 4 can be cylindrical or square.

[0108] 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 .

[0109] The protective plate 2 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.

[0110] 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 in a one-to-one correspondence with the battery cells 4, so that the 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.

[0111] 1 , in 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, thereby fixing the battery cell 4. The protective plate 2 is detachably connected to the upper shell 11, thereby fixing the protective plate 2 to 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, thereby reducing the horizontal movement of the battery cell 4 and the chance of the bottom of the battery cell 4 being scratched, thereby effectively protecting the battery cell 4. An exhaust hole 21 is provided on the protective plate 2 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. The exhaust groove 22 is connected to 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 to the exhaust groove 22, the gas in the exhaust hole 21 enters the exhaust groove 22, the exhaust groove 22 is connected to 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.

[0112] According to some embodiments of the present application, a battery 1000 is provided, comprising the battery described above. Since the vehicle includes all embodiments of all technical solutions of the battery 1000 described above, it at least has all the beneficial effects of all the above embodiments, which will not be detailed here.

[0113] According to some embodiments of the present application, a vehicle is provided, comprising a housing having a mounting location provided therein for mounting the aforementioned battery 1000. Because the vehicle includes all embodiments of all technical solutions of the aforementioned battery 1000, it possesses at least all the beneficial effects of all the aforementioned embodiments, which will not be further detailed herein.

[0114] 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 make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions 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, wherein, The battery includes: a battery cell having an explosion-proof valve; a box body in which the battery cell is accommodated, the box body having a box wall, and the explosion-proof valve facing the box wall; a protection plate located between the battery cell and the box wall and configured to cover the battery cell, the protection plate being provided with an exhaust hole corresponding to the position of the explosion-proof valve, the exhaust hole penetrating through the protection plate; when the battery is installed in a vehicle, the protection plate is located between the battery cell and the ground.

2. The battery according to claim 1, wherein, An exhaust groove communicating with the exhaust hole is formed on a side of the protection plate facing away from the battery cell, and the exhaust groove extends in a first direction and penetrates through the protection plate.

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

4. The battery according to claim 3, wherein, Along the axial direction of the exhaust hole, the height dimension of the protection 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, wherein, The protection plate has a hollow cavity that penetrates through the protection plate in the first direction, and the exhaust hole communicates with the hollow cavity.

6. The battery according to any one of claims 1 to 4, wherein The box body includes an upper shell and a bottom guard plate, the upper shell and the bottom guard plate cooperate to form a receiving cavity, the battery cell is accommodated in the receiving cavity, a side wall of the bottom guard plate facing the upper shell is the box wall, the protection plate is disposed on the bottom guard plate, and the battery cell is disposed between the protection plate and the upper shell.

7. The battery according to claim 6, wherein, The bottom guard plate forms an installation groove, the protection plate is disposed in the installation groove, and the bottom wall of the installation groove is the box wall.

8. The battery according to claim 6, wherein, The protection plate is detachably connected to the upper shell.

9. The battery according to claim 8, wherein, The protection plate is screwed to the upper shell.

10. The battery according to claim 8, wherein, The protection plate is riveted to the upper shell.

11. The battery according to any one of claims 1 to 4, wherein, The protection plate is adhesively bonded to the battery cell.

12. The battery according to any one of claims 1 to 4, wherein, The number of the battery cells is multiple, and the multiple battery cells are stacked along the first direction. The number of the exhaust holes is the same as the number of the battery cells and is arranged in one-to-one correspondence. The multiple exhaust holes are arranged in an array along the first direction to form an exhaust hole group.

13. The battery according to claim 12, wherein, The protection plate includes multiple groups of the exhaust hole groups, and the multiple groups of the exhaust hole groups are spaced apart along a second direction, and the second direction is perpendicular to the first direction.

14. A vehicle, wherein, The vehicle includes the battery according to claims 1 to 13, and the protection plate is located between the battery cell and the ground.

Images