Battery box, battery and power-consuming device

Abstract

Battery box (41), comprising: a box body (10) having several side walls enclosing a receiving space for receiving a battery cell (42); a first pressure relief mechanism (20) provided on at least one of the side walls to relieve the pressure in the battery box (41); wherein the first pressure relief mechanism (20) does not project outwards on at least one side wall.

Description

TECHNICAL AREA

[0001] The present invention relates to the field of battery technology, in particular a battery box, a battery and a power-consuming device. STATE OF THE ART

[0002] Secondary batteries, especially lithium-ion batteries, offer advantages such as high voltage, high specific energy, long lifespan, environmentally friendly and emission-free operation, a wide operating temperature range, and low self-discharge. They are widely used in portable electronic devices and the power systems of large electric vehicles and are of great importance in addressing environmental pollution and the energy crisis. With the increasing prevalence of lithium-ion batteries, battery safety has become a major concern for users. CONTENT OF THE PRESENT INVENTION

[0003] In one aspect of the present disclosure, a battery box is provided which includes the following:

[0004] a box that has several side walls enclosing a receiving space for the battery cells;

[0005] a first pressure relief mechanism provided on at least one of the side walls to relieve the pressure in the battery box;

[0006] wherein the first pressure relief mechanism does not protrude outwards on at least one side wall.

[0007] In this embodiment, the first pressure relief mechanism is arranged on at least one side wall of the battery housing. If a battery cell inside the housing malfunctions, the resulting high-temperature, high-pressure gas can be vented from the housing to the outside via the first pressure relief mechanism, thus improving battery safety. By ensuring that the first pressure relief mechanism does not protrude from the side wall, the risk of failure or damage to the first pressure relief mechanism due to collisions with the outer structure of the housing can be effectively reduced or avoided, further enhancing battery safety.

[0008] In some embodiments, it is provided that at least one of the side walls comprises a base plate of the box body, with the first pressure relief mechanism being arranged on the base plate.

[0009] By arranging the first pressure relief mechanism on the base plate of the box body, and by having the first pressure relief opening of the first pressure relief mechanism flush with the outer surface of the base plate or recessed relative to the outer surface of the base plate, the high-temperature and high-pressure gas generated when the battery cell becomes uncontrollable can escape from the bottom of the box body. This reduces the pressure in the box body and decreases the likelihood of the first pressure relief mechanism colliding with or becoming jammed against the underlying support structure. This ensures the reliability of the first pressure relief mechanism and improves the safety of battery use.

[0010] In some embodiments, the outer surface of the base plate is provided to have a first groove, with the first pressure relief mechanism being embedded in the first groove.

[0011] A first groove is provided on the outer surface of the base plate, into which a first pressure relief mechanism is embedded. The concave structure of the first groove is used to accommodate and secure the first pressure relief mechanism, thus fulfilling the requirement that the first pressure relief mechanism does not protrude beyond the outer surface of the base plate and ensuring reliable mounting of the first pressure relief mechanism on the base plate.

[0012] In some embodiments, the inner surface of the base plate is provided to have a first projection, the first projection being located on the opposite side of the first groove.

[0013] A first projection is provided on the inner surface of the base plate, located on the opposite side of the first groove. Using an established process such as sheet metal fabrication, the first groove and the first projection can be formed simultaneously in the base plate; this base plate with the first projection and the first groove exhibits higher structural strength.

[0014] In some embodiments, it is provided that several first grooves are provided, wherein the several first grooves are arranged at intervals along a first direction, and wherein the longitudinal direction of the first groove runs parallel to the second direction, wherein the second direction is perpendicular to the first direction, and the first and the second direction both run parallel to the outer surface of the base plate.

[0015] Several first grooves can be arranged at intervals along a first direction parallel to the outer surface of the base plate to accommodate several first pressure relief mechanisms, and each of the first grooves can extend in a second direction, i.e., the longitudinal direction of the first groove runs parallel to the second direction, this second direction here runs parallel to both the outer surface of the base plate and the first direction, thus the longitudinal direction of the first groove can be used to guide the high-temperature, high-pressure airflow exiting the first pressure relief mechanism.

[0016] In some embodiments, it is provided that, in the vertical direction of the box body, the outer surface of the base plate is lower than the geometric center of the first pressure relief mechanism, and the ratio W / H of the distance W from the outer surface of the base plate to the geometric center of the first pressure relief mechanism to the height H of the box body W / H≥0.001 is satisfied.

[0017] By ensuring the W / H ratio is greater than or equal to 0.001, the risks associated with tolerances can be effectively reduced.

[0018] In some embodiments, the battery box is also designed to include the following:

[0019] a support rod that is located on the inner surface of the base plate and is configured to support the battery cell located in the receiving space,

[0020] where, in the vertical direction of the box body, the support rod is located higher than the first projection.

[0021] To support the battery cell, support rods are arranged on the inside of the base plate. By positioning these support rods higher than the first projection in the vertical direction of the box body, an exhaust gas chamber is created between the lower end of the battery cell and the inner surface of the base plate. This ensures a sufficient exhaust gas gap between the battery cell and the first pressure relief mechanism, thus guaranteeing that the high-temperature and high-pressure gas escaping from the battery cell can be smoothly discharged to the outside through the first pressure relief mechanism.

[0022] In some embodiments, it is provided that several support rods are provided, wherein several support rods are arranged at regular intervals along a first direction parallel to the outer surface of the base plate, the first projection is located between two adjacent support rods.

[0023] Several support rods can be used to support multiple rows of battery cells; the first projection is positioned between two adjacent support rods to prevent the first projection from colliding with the support rods.

[0024] In some embodiments, the support rod has a cavity, wherein a top surface of the support rod, which is used to support the top surface of the battery cell, has several first through-holes passing through the cavity, and wherein at least one side surface of the support rod connected to the top surface has several second through-holes passing through the cavity.

[0025] The support rod, featuring a cavity, a first through-hole, and a second through-hole, is lighter and also allows high-temperature, high-pressure gas to flow through it in the event of a battery cell failure. If the first through-hole of the support rod is at least partially aligned with the second pressure relief mechanism at the bottom of the battery cell, the high-temperature, high-pressure gas inside the battery cell can, in the event of a cell failure, pass through the first through-hole of the second pressure relief mechanism into the cavity of the support rod, then exit the support rod through several second through-holes in the cavity, and finally escape to the outside through the first pressure relief mechanism.This helps to prevent the high-temperature and high-pressure gas from escaping too quickly through the first pressure relief mechanism and thus creating open flames outside the battery.

[0026] In some embodiments, it is provided that the at least one side wall comprises at least one side plate of the box body, wherein the first pressure relief mechanism is arranged on the at least one side plate.

[0027] By arranging the first pressure relief mechanism on the side plate of the battery box and having the first pressure relief opening of the first pressure relief mechanism flush with the outer surface of the side plate or recessed relative to the outer surface of the side plate, the high-temperature and high-pressure gas generated when the battery cell becomes uncontrollable can escape from one side of the battery box. This reduces the pressure inside the battery box and decreases the likelihood of the first pressure relief mechanism colliding with or becoming jammed against other structures on the side of the battery box. This ensures the reliability of the first pressure relief mechanism and improves the safety of battery use.

[0028] In some embodiments, the outer surface of the side plate is provided to have a second groove, with the first pressure relief mechanism embedded in the second groove.

[0029] A second groove is provided on the outer surface of the side plate, into which a first pressure relief mechanism is embedded. The concave structure of the second groove is used to accommodate and secure the first pressure relief mechanism, thus fulfilling the requirement that the first pressure relief mechanism does not protrude beyond the outer surface of the side plate and ensuring reliable mounting of the first pressure relief mechanism on the side plate.

[0030] In some embodiments, the at least one side wall comprises two opposing side plates, with at least two first pressure relief mechanisms being provided, each arranged on two opposing side plates.

[0031] By arranging at least two first pressure relief mechanisms on two opposing side plates, the high-temperature and high-pressure gas in the box body can escape to the outside via the first pressure relief mechanisms on two opposing side plates if the battery cell becomes uncontrollable, thereby shortening the gas relief path and making the pressure relief more uniform and effective.

[0032] In some embodiments, it is provided that, in the vertical direction of the box body, the ratio W / H of the distance W from the outer surface of the base plate to the geometric center of the first pressure relief mechanism to the height H of the box body W / H < 1.

[0033] By ensuring that the ratio of distance W to height H is less than 1, the upper cover of the box body is not equipped with the first pressure relief mechanism, thus preventing the risk of high-temperature and high-pressure gas being expelled upwards from the upper cover of the battery box and entering the passenger compartment if the battery cell becomes uncontrollable.

[0034] In one aspect of the present revelation, a battery is provided which includes the following:

[0035] a previously mentioned battery box;

[0036] Several battery cells are arranged in the battery box. The battery, which includes the aforementioned battery box, offers a higher level of safety.

[0037] In some embodiments, the battery cell is provided to have an electrode connection and a second pressure relief mechanism; in the vertical direction of the box body, the minimum distance h between the second pressure relief opening of the second pressure relief mechanism and the electrode connection is greater than the minimum distance L between the second pressure relief opening of the second pressure relief mechanism and the inlet of the first pressure relief mechanism of the battery box.

[0038] The minimum distance h between the second pressure relief opening of the second pressure relief mechanism of the battery cell and the electrode terminal is greater than the minimum distance L between the second pressure relief opening of the second pressure relief mechanism and the inlet of the first pressure relief mechanism. This allows the high-temperature, high-pressure gas in the battery cell to escape through the second pressure relief opening of the second pressure relief mechanism if the battery cell is running uncontrollably. Because the second pressure relief opening is located closer to the inlet of the first pressure relief mechanism, the high-temperature, high-pressure gas can be released from the first pressure relief mechanism as far as possible first, and is therefore less likely to reach the electrode terminal and impair the insulation properties of the battery cell.This also eliminates the need to install a special exhaust duct in the battery box, which simplifies the design and reduces the manufacturing effort and production costs of the battery box and the battery.

[0039] In some embodiments, the first pressure relief mechanism is located on a side of the second pressure relief mechanism facing away from the electrode connection.

[0040] By arranging the first pressure relief mechanism on the side of the second pressure relief mechanism facing away from the electrode connection, the high-temperature and high-pressure gas released by the second pressure relief mechanism can be discharged more quickly to the outside through the first pressure relief mechanism and therefore reaches the electrode connection less frequently, thus impairing the insulation properties of the battery cell.

[0041] In some embodiments, the second pressure relief mechanism and the electrode connection are located at the lower end and the upper end of the battery cell, respectively, the first pressure relief mechanism is located on the base plate of the box, and in the vertical direction of the box body, the inlet of the first pressure relief mechanism is lower than the second pressure relief opening of the second pressure relief mechanism.

[0042] The second pressure relief mechanism and the electrode connection are located at the bottom and top ends of the battery cell, respectively, with the first pressure relief mechanism being located on the base plate of the box body and below the second pressure relief mechanism. In this way, the high-temperature and high-pressure gas escaping from the second pressure relief mechanism can be discharged more quickly from the bottom of the battery box, and the insulation properties of the battery cell are affected as little as possible.

[0043] In some embodiments, it is provided that the orthogonal projection of the second pressure relief mechanism of the battery cell onto the inner surface of the base plate of the box body does not coincide with the orthogonal projection of the first pressure relief mechanism onto the inner surface of the base plate of the box body.

[0044] The orthogonal projections of the second and first pressure relief mechanisms on the inner surface of the base plate do not coincide, thus preventing the high-temperature and high-pressure gas released by the second pressure relief mechanism from escaping too quickly through the first pressure relief mechanism to the outside, thereby avoiding the danger of open flames on the outside of the battery, which can be caused by flammable gases at high temperature and high pressure.

[0045] In some embodiments, it is provided that, in the vertical direction of the box body, the ratio L / S of the minimum distance L to the minimum distance S between the inlet of the first pressure relief mechanism and the electrode connection is 0.001≤L / S≤1.

[0046] By ensuring that the L / S ratio meets the condition 0.001≤L / S≤1, the high-temperature and high-pressure gas in the battery cell can be smoothly released through the second and first pressure relief mechanisms in the event of uncontrollability of the battery cell, and the insulation performance of the battery is not affected as much as possible, thus improving the safety of use and reliability of the battery.

[0047] In one aspect of the present disclosure, a power-consuming device is provided which includes the aforementioned battery, wherein the battery is used to supply the power-consuming device with electrical energy.

[0048] The power-consuming device that uses the aforementioned battery exhibits the highest level of safety in use. BRIEF DESCRIPTION OF THE DRAWING

[0049] To more clearly explain the technical solutions of the embodiments of this disclosure, the drawings required for these embodiments are briefly described below. Obviously, the accompanying drawings in the following description represent only some embodiments of this disclosure, and other drawings can be derived from them without any creative effort by the person skilled in the art.

[0050] The present revelation will be more clearly understood with reference to the accompanying drawings and the following detailed description: Fig. Figure 1 is a schematic structural representation of some embodiments of the power-consuming device of the present disclosure; Fig. Figure 2 is a schematic structural representation according to some embodiments of the battery of the present disclosure; Fig. 3 and Fig. Figure 4 shows schematic exploded views from different perspectives according to some embodiments of the battery of the present disclosure; Fig. Figure 5 is a schematic sectional view of the xz section according to some embodiments of the battery of the present disclosure; Fig. Figure 6 shows a schematic structural representation of the base plate according to some embodiments of the battery box of the present disclosure; Fig. 7(a) and (b) are each schematic structural representations of the base plate in Fig. 6 from the bottom or top; Fig. Figure 8 is a schematic representation showing the dimensional relationships of the base plate according to some embodiments of the battery box of the present disclosure; Fig. Figure 9 shows a schematic structural representation of the side plate according to some embodiments of the battery box of the present disclosure; Fig. Figure 10 is a schematic representation showing the dimensional relationships according to some embodiments of the battery of the present disclosure.

[0051] It should be noted that the dimensions of the individual parts in the figures are not drawn to a realistic scale. Furthermore, identical or similar reference symbols indicate identical or similar structural elements. DETAILED DESCRIPTION

[0052] The implementations of this disclosure are described below with reference to the accompanying drawings and embodiments. The following detailed description and the accompanying drawings of the embodiments serve to illustrate the principles of this disclosure by way of example; however, they should not be used to limit the scope of this disclosure, that is to say, this disclosure is not limited to the described embodiments.

[0053] In describing this disclosure, it should be noted that, unless otherwise specified, "several" means two or more; the orientations or positional relationships indicated by the terms "above", "below", "left", "right", "inside", "outside", and the like are used only to simplify the description of this disclosure; they are not intended to indicate or imply that the device or element referred to must have a particular orientation or be designed and operated in a particular orientation, and are therefore not to be understood as limiting this disclosure. Furthermore, the terms "first", "second", and "third", and the like, are used for descriptive purposes only and cannot be understood as indicating or implying a relative meaning."Vertical" does not mean vertical in the strict sense, but rather within the range of permissible error tolerance. "Parallel" does not mean parallelism in the strict sense, but rather within the range of permissible error tolerance.

[0054] The directional terms used in the following description refer to the directions depicted in the figure and are not intended to limit the specific structure of this disclosure. In describing this disclosure, it should also be noted that the terms "installation," "tying," and "connecting," unless expressly stated otherwise and limited, are to be understood in the broadest sense; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a direct connection or an indirect connection via an intermediary medium. The average person skilled in the art in this field will be able to understand the specific meanings of the foregoing terms in this disclosure according to specific situations.

[0055] Some embodiments of the present invention are described in detail below with reference to the accompanying drawings. Features in the embodiments described below can be combined without conflict.

[0056] In some related technologies, a first explosion-proof valve is arranged on the base plate of the battery housing as a pressure relief mechanism. Inside the housing, a special air duct structure is designed to channel the high-temperature, high-pressure gas escaping from the battery cell's explosion-proof valve to the first explosion-proof valve. The inventors discovered through their research that, due to structural design, assembly tolerances, or similar factors, the first explosion-proof valve could protrude from the surface of the base plate. This could cause the first explosion-proof valve to be struck or compressed by other structures when the battery is installed in a vehicle, potentially leading to its failure and compromising the battery's operational safety.Furthermore, the installation of a special air duct structure in the box body will make the construction of the battery box more complex, leading to increased manufacturing difficulties and costs for both the battery box and the battery.

[0057] Against this background, embodiments of the present disclosure provide a battery box, a battery and a power-consuming device that can improve the safety of using the battery.

[0058] The battery box of the embodiments disclosed herein is applicable to various battery types. Batteries can be used to supply power to electrical devices such as vehicles; for example, they provide power for vehicle control or for the vehicle's propulsion. A battery can comprise battery cells and a battery box for housing the battery cells. The battery cell can, for example, comprise a lithium-ion secondary battery, a lithium-ion primary battery, a lithium-sulfur battery, a sodium-lithium-ion battery, a sodium-ion battery, or a magnesium-ion battery, and the like, the embodiments disclosed herein being no longer limited to these. The battery cell can have the shape of a cylinder, a flat body, a cuboid, or other shapes, and the embodiments disclosed herein are not limited to these.

[0059] The battery box can accommodate various types of battery cells, such as battery modules, which comprise several battery cells connected in series, parallel, or a mixed configuration. The battery module can be mounted within the body of the battery box. A battery cell, the smallest unit of a battery, can contain electrode arrays capable of undergoing electrochemical reactions.

[0060] The battery of the embodiments of the present disclosure is applicable to various types of power-consuming devices that use batteries.The power-consuming devices can be, for example, mobile phones, portable devices, laptops, electric vehicles, electric cars, ships, spacecraft, electric toys, and power tools, or the like. Spacecraft include, for example, airplanes, rockets, spacecraft, and spacecraft, and so on. Electric toys include stationary or mobile electric toys such as game consoles, electric car toys, electric ship toys, electric airplane toys, and so on. Power tools include metal-cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers. The embodiments described in this disclosure do not impose any specific limitations on the aforementioned power-consuming devices.

[0061] Fig. Figure 1 is a schematic structural representation of some embodiments of the power-consuming device of the present disclosure. For the sake of simplicity, the power-consuming device is explained using a vehicle as an example. The vehicle 50 can be a fuel-powered vehicle, a gas-powered vehicle, or a vehicle with a new energy source, and the vehicle with a new energy source can be a pure electric vehicle, a hybrid vehicle, or the like. The battery 40 can be arranged on the floor, front of the vehicle, or rear of the vehicle 50.

[0062] Battery 40 can be used to power vehicle 50. For example, battery 40 can serve as the operating power source for vehicle 50's electrical system, such as for the power required during starting, navigation, and operation. Battery 40 can also serve as the propulsion power source for vehicle 50, replacing or partially replacing fuel or natural gas to provide the necessary power.

[0063] Within the vehicle 50, axles, wheels, motor 52, and control unit 51 can also be arranged. The control unit 51 serves to control the battery 40 in order to supply power to the motor 52. For example, if the vehicle 50 uses the battery 40 as its power source, the control unit 51 can provide the motor 52 with the power required for constant speed and acceleration. The motor 52 drives the axle to rotate, thus setting the wheels in motion.

[0064] Fig. Figure 2 is a schematic structural representation according to some embodiments of the battery of the present disclosure. Fig. 3 and Fig. Figure 4 shows schematic exploded views from different perspectives according to some embodiments of the battery of the present disclosure. Fig. Figure 5 is a schematic sectional view of the xz section according to some embodiments of the battery of the present disclosure.

[0065] With reference to Fig. 2, Fig. 3, Fig. 4 to Fig. In some embodiments, the battery 40 comprises a battery box 41 and several battery cells 42 arranged within the battery box 41. The battery box 41 can provide the battery cells 42 with functions such as housing, support, cooling, sealing, and shock protection, and can also prevent external liquids or other foreign bodies from affecting the charging, discharging, or safety of the battery cells.

[0066] In the Fig. 2, Fig. 3, Fig. 4 to Fig. 5. The battery cells 42 are electrically connected to one another, for example in series, parallel, or a combination thereof, to achieve the required electrical performance parameters of the battery 40. Several battery cells 42 are arranged in a series. Depending on requirements, one or more rows of battery cells 42 can be arranged in the housing.

[0067] In some embodiments, each battery cell 42 of the battery 40 can be arranged along at least one of the longitudinal and transverse directions of the battery box. Depending on the actual requirements, at least one row or one column of battery cells 42 can be arranged. Depending on the requirements, one or more layers of battery cells 42 can also be provided in the vertical direction of the battery 40.

[0068] In some embodiments, the multiple battery cells 42 can be connected in series, parallel, or in a combination of both to form a battery module. The multiple battery modules are then connected in series, parallel, or in a combination of both to form a complete unit and housed in the battery box 41. In other embodiments, all battery cells 42 are connected in series, parallel, or in a combination of both, and the complete unit, consisting of all battery cells 42, is then housed in a battery box 41.

[0069] With reference to the Fig. 2, Fig. 3 to Fig. Figure 4 presents embodiments of the present disclosure, comprising a battery box 41, a box body 10, and a first pressure relief mechanism 20. The box body 10 has several side walls that enclose a receiving space for the battery cells 42. The first pressure relief mechanism 20 is arranged on at least one side wall to relieve the pressure in the battery box 41. The first pressure relief mechanism 20 does not project outwards on at least one side wall.

[0070] In this embodiment, the first pressure relief mechanism 20 is arranged on at least one side wall of the housing 10. If a battery cell 42 inside the housing 10 malfunctions, the resulting high-temperature and high-pressure gas can be vented from the housing 10 to the outside via the first pressure relief mechanism 20, thereby improving the safety of using the battery 40. By ensuring that the first pressure relief mechanism 20 does not protrude from the side wall, the risk of failure or damage to the first pressure relief mechanism 20 due to collisions with the outer structure of the housing 10 can be effectively reduced or avoided, further improving the safety of using the battery 40.

[0071] In the present embodiment, the multiple side walls of the box body 10 can comprise a base plate 11, side plates 12, and a top cover 13, wherein the base plate 11, the side plates 12, and the top cover 13 are stacked successively on top of each other to enclose the inner receiving space. Fig. In 3, four side plates 12 are connected to form a rectangular frame, and the base plate 11 and the top cover 13 are arranged on the top and bottom surfaces of the rectangular frame, respectively. In further embodiments, the multiple side walls of the box body 10 can also comprise a base plate 11 and a top cover 13, wherein the base plate 11 and the top cover 13 are stacked one on top of the other to enclose an inner receiving space.

[0072] The first pressure relief mechanism 20 serves to release the internal pressure of the battery box 41; in some embodiments, the first pressure relief mechanism 20 may be an explosion-proof valve, an explosion-proof disc, a gas valve, a pressure relief valve, a safety valve, or the like.

[0073] To simplify the description, with reference to the Fig. 2, Fig. 3, Fig. 4 to Fig. 5. The vertical direction of the battery box 41 is defined as z. On a plane perpendicular to the vertical direction z of the battery box 41, the first direction x and the second direction y, which are perpendicular to each other, can be assumed to be the longitudinal direction and the horizontal direction of the battery box 41, respectively. Several battery cells 42 can be arranged in an array along the first direction x and the second direction y. For each side wall of the box body 10, the inner and outer sides are defined by the interior and exterior of the box body 10, respectively. For example, the inner surface of a given side wall is the surface of the side wall adjacent to the receiving space of the interior of the box body, while the outer surface is the surface of the side wall facing away from the receiving space of the interior of the box body.

[0074] In its normal position, the battery box 41's base plate 11 is located at least partially below the battery cell 42, while the top cover 13 is located at least partially above the battery cell 42. The battery box 41 can also be placed in other orientations, for example, in a horizontal position with one side plate located at least partially below the battery cell 42 and the opposite side plate 12 located at least partially above the battery cell 42; for example, the battery box 41 can be inverted, i.e., the top cover 13 of the battery box 41 is located at least partially below the battery cell 42, while the base plate 11 is located at least partially above the battery cell 42.

[0075] With reference to Fig. 3 and Fig. In some embodiments, it is provided that at least one of the side walls comprises a base plate 11 of the box body 10, wherein the first pressure relief mechanism 20 is arranged on the base plate 11. The first pressure relief mechanism 20 can be arranged on the base plate 11 in various ways, e.g. by snapping, gluing, screwing or the like.

[0076] In this embodiment, the first pressure relief mechanism 20 is arranged on the base plate 11 of the box body 10, and the first pressure relief opening 21 of the first pressure relief mechanism 20 is flush with the outer surface 11a of the base plate 11 or recessed relative to the outer surface 11a of the base plate 11. The high-temperature and high-pressure gas that arises when the battery cell 42 becomes uncontrollable can escape from the underside of the box body 10, thereby reducing the pressure inside the box body 10 and decreasing the likelihood of the first pressure relief mechanism 20 colliding with or becoming jammed against the support structures below the box body 10. This ensures the reliability of the first pressure relief mechanism 20 and improves the safety of using the battery 40.

[0077] Fig. Figure 6 shows a schematic structural representation of the base plate according to some embodiments of the battery box of the present disclosure. Fig. 7(a) and (b) are each schematic structural representations of the base plate in Fig. 6 from the bottom or top. With reference to Fig. 7(a) In some embodiments, the outer surface 11a of the base plate 11 has a first groove 111, wherein the first pressure relief mechanism 20 is embedded in the first groove 111. In the vertical direction z of the box body 10, the groove wall and the groove bottom of the first groove 111 are higher than the outer surface of the base plate 11. Fig. 7(a) the groove bottom of the first groove 111 can be provided with a through hole 23 to connect the inside with the outside of the base plate 11.

[0078] A first groove 111 is provided on the outer surface 11a of the base plate 11, into which a first pressure relief mechanism 20 is embedded. In this way, the concave structure of the first groove 111 is used to receive and fix the first pressure relief mechanism 20, thereby fulfilling the requirement that the first pressure relief mechanism 20 does not protrude beyond the outer surface 11a of the base plate 11, and also enabling the first pressure relief mechanism 20 to be reliably mounted on the base plate 11.

[0079] With reference to Fig. In some embodiments, as described in Figures 3 to 6 and 7(b), the base plate 11 has a first projection 112 on its inner surface 11b, the first projection 112 being located on the opposite side of the first groove 111. With this design, the first groove 111 and the first projection 112 can be produced simultaneously on the base plate 11 using a conventional process such as sheet metal fabrication. Furthermore, the base plate 11 with the first projection 112 and the first groove 111 can achieve improved structural strength, withstand impacts, and be less prone to deformation.

[0080] The first groove 111 can have a cross-section of various shapes, e.g., a circular cross-section, a polygonal cross-section, or the like; the number of first grooves 111 can be set to one or more. With multiple first grooves 111, at least one first pressure relief mechanism 20 can be provided in each first groove 111. With reference to Fig. 3, Fig. 4, Fig. 5, Fig. 6 to Fig. In some embodiments, it is provided that several first grooves 111 are provided, wherein the several first grooves 111 are arranged at intervals along a first direction x, and wherein the longitudinal direction of the first groove 111 runs parallel to the second direction y, wherein the first direction x is perpendicular to the second direction y, and wherein the first direction x and the second direction y both run parallel to the outer surface 11a of the base plate 11.

[0081] Several first grooves 111 can be arranged at intervals along a first direction x parallel to the outer surface 11a of the base plate 11 to provide several first pressure relief mechanisms 20, and each first groove 111 can extend along the second direction y, i.e. the longitudinal direction of the first groove 111 is parallel to the second direction y, where the second direction y is parallel to both the outer surface 11a of the base plate 11 and the first direction x, thereby the longitudinal direction of the first groove 111 can be used to guide the high-temperature, high-pressure airflow exiting the first pressure relief mechanism 20.

[0082] Fig. Figure 8 is a schematic representation showing the dimensional relationships of the base plate according to some embodiments of the battery box of the present disclosure. With reference to Fig. In some embodiments, it is provided that in the vertical direction z of the box body 10 the outer surface 11a of the base plate 11 lies lower than the geometric center 22 of the first pressure relief mechanism 20, and wherein in the vertical direction z of the box body 10 the ratio of the distance W from the outer surface 11a of the base plate 11 to the geometric center 22 of the first pressure relief mechanism 20 to the height H is given by Fig. The condition W / H<0.001 is fulfilled in section 2 of the box body 10. The geometric center 22 can be the center point of the first pressure relief mechanism 20 in the vertical direction z of the box body 10.

[0083] H can be assumed to be between 50 and 1000 mm. If the first pressure relief mechanism 20 is located on the base plate 11, W can be between 1 and 1000 mm, and if the first pressure relief mechanism 20 is located on the side plate 12, W can be between 10 and 990 mm. The distance W represents the recess depth of the first pressure relief mechanism 20 on the base plate 11 relative to the outer surface 11a of the base plate 11. Considering the tolerance factors, if the recess depth is too shallow, there is still a risk that the first pressure relief mechanism 20 will protrude from the outer surface 11a of the base plate 11 and collide with or become wedged against the outer structure. Therefore, the above risk due to tolerances can be effectively reduced if W / H ≥ 0.001.

[0084] Referring to the above embodiments, in a test example H is assumed to be 200 mm and W to be 20 mm, the calculated W / H ratio is 0.1, and the W / H value must meet the requirement W / H ≥ 0.001. The experimental results showed that the first pressure relief mechanism 20 can reliably and effectively reduce the pressure.

[0085] Referring to the embodiment described above, in another experimental example, H is 200 mm and W is 5 mm, the calculated W / H ratio is 0.025, and the W / H value meets the requirement that W / H ≥ 0.001. The experimental results showed that the first pressure relief mechanism 20 can reliably and effectively reduce the pressure.

[0086] Referring to the embodiment described above, in a comparative test example, H is 1000 mm and W is 0.5 mm, the calculated W / H ratio is 0.0005, the W / H value does not meet the requirement that W / H ≥ 0.001. In the experimental results, the first pressure relief mechanism 20 fails due to an impact because it protrudes outwards relative to the outer surface of the base plate.

[0087] The above-mentioned experimental example and comparison experiment show that by ensuring that the value of W / H meets the condition W / H≥0.001, the risk can be effectively reduced that the first pressure relief mechanism 20 protrudes beyond the outer surface 11a of the base plate 11 due to tolerances and thereby comes into contact with or is pressed against external structures.

[0088] With reference to Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7 to Fig. In some embodiments, the battery box 41 is provided to also include a support rod 30. The support rod 30 is arranged on the inner surface 11b of the base plate 11 and is configured to support the battery cell 42 located in the receiving space. With reference to the Fig. 5 and Fig. Figure 8 shows that in the vertical direction z of the box body 10 the support rod 30 is higher than the first projection 112.

[0089] To support the battery cell 42, a support rod 30 is provided on the inner surface 11b of the base plate 11, and the support rod 30 is located higher in the vertical direction z of the box body 10 than the first projection 112, thereby allowing an exhaust chamber to be formed between the lower end of the battery cell 42 and the inner surface 11b of the base plate 11, and ensuring that a certain exhaust gap can be formed between the battery cell 42 and the first pressure relief mechanism 20, in order to ensure that the high-temperature and high-pressure gas emitted by the battery cell 42 can escape smoothly to the outside via the first pressure relief mechanism 20.

[0090] With reference to Fig. 3, Fig. 4 to Fig. In some embodiments, it is provided that several support rods 30 are provided, wherein the several support rods 30 are arranged at intervals along a first direction x parallel to the outer surface 11a of the base plate 11, the first projection 112 being located between two adjacent support rods 30. Several support rods 30 can be used to support several rows of battery cells 42, the first projection 112 being arranged between two adjacent support rods 30 to avoid mutual interference between the first projection 112 and the support rod 30.

[0091] With reference to Fig. 4 and Fig. In some embodiments, the support rod 30 has a cavity 33, wherein a top surface of the support rod 30, which is used to support the top surface of the battery cell 42, has several first through holes 31 that pass through the cavity 33, wherein at least one side surface of the support rod 30 connected to the top surface has several second through holes 32 that pass through the cavity 33.

[0092] The support rod 30, which has a cavity 33, a first through-hole 31, and a second through-hole 32, is lighter and contributes to reducing the overall weight of the battery. Furthermore, if the battery cell 42 fails, the high-temperature, high-pressure gas can flow through the support rod 30. If the first through-hole 31 of the support rod 30 is at least partially aligned with the second pressure relief mechanism at the lower end of the battery cell 42, when the battery cell 42 fails, the high-temperature, high-pressure gas inside the battery cell 42 can pass through the first through-hole 31 from the second pressure relief mechanism into the cavity 33 of the support rod 30, then exit through the cavity 33 from the multiple second through-holes 32 in the support rod 30, and finally escape to the outside through the first pressure relief mechanism 20.This helps to prevent the high-temperature, high-pressure gas from escaping too quickly through the first pressure relief mechanism 20, which would otherwise cause open flames outside the battery 40. Multiple through-holes 32 can be used to distribute the high-temperature, high-pressure gas within the cavity 33. This ensures that the gas exiting the support rod 30 is distributed more evenly along its length, thus preventing a local accumulation of the gas and consequently an excessively high local pressure inside the battery box.

[0093] In the embodiment described above, the first pressure relief mechanism 20 can be arranged on the base plate 11 of the box body 10. In further embodiments, the first pressure relief mechanism 20 can also be provided on other side walls of the box body 10, or both the first pressure relief mechanism 20 can be provided on the base plate 11 and the first pressure relief mechanism 20 can be provided on other side walls of the box body 10.

[0094] Fig. Figure 9 shows a schematic structural representation of the side plate according to some embodiments of the battery box of the present disclosure. With reference to Fig. In some embodiments, as described in sections 2 to 4 and 9, the at least one side wall comprises at least one side plate 12 of the box body 10, wherein the first pressure relief mechanism 20 is arranged on the at least one side plate 12.

[0095] In the present embodiment, the first pressure relief mechanism 20 is arranged on the side plate 12 of the housing 10, and the first pressure relief opening 21 of the first pressure relief mechanism 20 is flush with or recessed into the outer surface 12a of the side plate 12. The high-temperature and high-pressure gas that arises when the battery cell 42 becomes uncontrollable can escape laterally from the housing 10, thereby reducing the pressure inside the housing 10 and decreasing the likelihood of the first pressure relief mechanism 20 colliding with or becoming jammed against other structures on the side of the housing 10. This ensures the reliability of the first pressure relief mechanism 20 and improves the safety of using the battery 40.

[0096] With reference to Fig. 3 and Fig. In some embodiments, the outer surface 12a of the side plate 12 has a second groove 121, wherein the first pressure relief mechanism 20 is embedded in the second groove 121. The bottom of the second groove 121 can be provided with a through-hole 24 to connect the inside to the outside of the side plate 12.

[0097] A second groove 121 is provided on the outer surface of the side plate 12, in which the first pressure relief mechanism 20 is embedded. In this way, the concave structure of the second groove 121 is used to receive and fix the first pressure relief mechanism 20, thereby fulfilling the requirement that the first pressure relief mechanism 20 does not protrude beyond the outer surface of the side plate 12, and also enabling the first pressure relief mechanism 20 to be reliably mounted on the side plate 12.

[0098] In the Fig. 3 and Fig. 9 comprises at least one side plate 12 and two opposing side plates 12, wherein at least two first pressure relief mechanisms 20 are provided, each arranged on two opposing side plates 12. For example, a first pressure relief mechanism 20 is provided in each of the two opposing side plates 12, and the two first pressure relief mechanisms 20 can be arranged symmetrically or offset.

[0099] In this embodiment, the high-temperature and high-pressure gas in the box body 10 can escape to the outside via the first pressure relief mechanisms 20 on two opposite side plates 12 by means of the respective arrangement of at least two first pressure relief mechanisms 20 on two opposite side plates 12 when the battery cell 42 becomes uncontrollable, thereby shortening the gas relief path and making the pressure relief more uniform and effective.

[0100] In the respective embodiments of the battery box described above, the ratio of the distance W from the outer surface 11a of the base plate 11 to the geometric center 22 of the first pressure relief mechanism 20 to the height H of the box body 10 can satisfy the condition W / H<1. Since the ratio of distance W to height H is less than 1, the upper cover of the box body 10 is not provided with the first pressure relief mechanism 20. This prevents the risk that, in the event of an uncontrollable battery cell 42, the high-temperature and high-pressure gas from the upper cover of the battery box 41 would be expelled upwards and thus enter the passenger compartment.

[0101] Referring to the above embodiments, in an experimental example H is assumed to be 200 mm and W to be 20 mm, the calculated W / H ratio is 0.1, and the W / H value must meet the requirement W / H < 1. In the experimental results, the first pressure relief mechanism 20 can reliably and effectively reduce the pressure without the high-temperature and high-pressure gas escaping upwards.

[0102] Referring to the embodiment described above, in another experimental example, H is 200 mm and W is 5 mm, the calculated W / H is 0.025, and the W / H value must meet the requirement W / H < 1. In the experimental results, the first pressure relief mechanism 20 can reliably and effectively reduce the pressure without the high-temperature and high-pressure gas escaping upwards.

[0103] Referring to the embodiment described above, in a comparative test example, H is 200 mm and W is 200 mm, the calculated W / H ratio is 1, but the W / H value does not meet the requirement of W / H < 1. In the experimental results, the first pressure relief mechanism, being located on the upper cover, releases the high-temperature and high-pressure gas upwards, creating a risk of it entering the passenger compartment.

[0104] From the above experimental examples and comparative experimental examples, it can be seen that by choosing a W / H value with W / H < 1 the risk can be effectively reduced or avoided that the high-temperature and high-pressure gas will spray upwards from the upper cover of the battery box 41 and thus enter the passenger compartment if the battery cell 42 becomes uncontrollable.

[0105] The respective embodiments of the battery box described above are applicable to all battery types. With reference to the Fig. 2, Fig. 3, Fig. 4 to Fig. Figure 5 represents exemplary embodiments of the present disclosure, namely a battery 40 comprising the aforementioned battery box 41 and several battery cells 42. The several battery cells 42 are arranged in the battery box 41. This battery 40, comprising the aforementioned battery box 41, exhibits a higher level of safety in use.

[0106] Fig. Figure 10 is a schematic representation showing the dimensional relationships according to some embodiments of the battery of the present disclosure. With reference to Fig. 4 and Fig. In some embodiments, each battery cell 42 has an electrode terminal 421 and a second pressure relief mechanism 422. In the case of multiple battery cells, the electrode terminals 421 of each battery cell can be electrically connected to each other via components such as busbars. The second pressure relief mechanism 422 is used to reduce the internal pressure of the battery cell 42. For example, in the event of thermal runaway or other uncontrollable conditions in the battery cell 42, the high-temperature and high-pressure gas generated inside can be vented to the outside via the second pressure relief mechanism 422. In some embodiments, the second pressure relief mechanism 422 can be an explosion-proof valve, an explosion-proof disc, a gas valve, a pressure relief valve, a safety valve, or the like.

[0107] In the vertical direction z of the box body 10, the minimum distance h between the second pressure relief opening 422a of the second pressure relief mechanism 422 and the electrode connection 421 is greater than the minimum distance L between the second pressure relief opening 422a of the second pressure relief mechanism 422 and the inlet 25 of the first pressure relief mechanism 20 of the battery box 41.

[0108] If the battery cell 42 goes out of control, the high-temperature and high-pressure gas in the battery cell 42 is released via the second pressure relief opening 422a of the second pressure relief mechanism 422. Since the second pressure relief opening 422a is located closer to the inlet 25 of the first pressure relief mechanism 20, the high-temperature and high-pressure gas can first be released as far as possible from the first pressure relief mechanism 20 and is therefore less likely to reach the electrode terminal 421 and impair the insulation properties of the battery cell 42. This also eliminates the need to provide a special exhaust duct in the battery box 41, which simplifies the design and reduces the manufacturing effort and production costs of the battery box 41 and the battery 40.

[0109] With reference to Fig. In some embodiments, the first pressure relief mechanism 20 is located on the side of the second pressure relief mechanism 422 facing away from the electrode terminal 421. By arranging the first pressure relief mechanism 20 on the side of the second pressure relief mechanism 422 facing away from the electrode terminal 421, the high-temperature and high-pressure gas released by the second pressure relief mechanism 422 can be discharged more quickly to the outside through the first pressure relief mechanism 20 and therefore less frequently reaches the electrode terminal 421, thus impairing the insulation properties of the battery cell 42.

[0110] In Fig. 10 the second pressure relief mechanism 422 and the electrode connection 421 can each be arranged at the lower end and at the upper end of the battery cell 42 respectively, the first pressure relief mechanism 20 can be arranged on the base plate 11 of the box body 10, and wherein in the height direction z of the box body 10 the inlet 25 of the first pressure relief mechanism 20 is lower than the second pressure relief opening 422a of the second pressure relief mechanism 422.

[0111] The second pressure relief mechanism 422 and the electrode connection 421 are located at the lower and upper ends of the battery cell 42, respectively, such that the first pressure relief mechanism 20 is situated on the base plate 11 of the battery box 10 and lies below the second pressure relief mechanism 422. This allows the high-temperature, high-pressure gas escaping from the second pressure relief mechanism 422 to be discharged more quickly from the base of the battery box 41, minimizing any impairment of the insulation properties of the battery cell 42.

[0112] With reference to Fig. In some embodiments, it is provided that the orthogonal projection of the second pressure relief mechanism 422 of the respective battery cell 42 onto the inner surface 11b of the base plate 11 of the box body 10 does not coincide with the orthogonal projection of the first pressure relief mechanism 20 onto the inner surface 11b of the base plate 11 of the box body 10.

[0113] The orthogonal projections of the second pressure relief mechanism 422 and the first pressure relief mechanism 20 on the inner surface 11b of the base plate 11 do not coincide, thus preventing the high-temperature and high-pressure gas released by the second pressure relief mechanism 422 from escaping too quickly to the outside through the first pressure relief mechanism 20, thereby avoiding the danger of open flames outside the battery 40 caused by the flammable high-temperature and high-pressure gas.

[0114] In the respective embodiment of the battery described above, the second pressure relief mechanism 422 is not limited to being located at the lower end of the battery cell, but can also be located at other points on the battery cell, for example on the side wall or at the upper end. The first pressure relief mechanism 20 is not limited to being located on the base plate, but can also be attached to other side walls of the housing 10.

[0115] With reference to Fig.10 can, in the vertical direction z of the box body 10, the ratio L / S of the minimum distance L between the second pressure relief opening 422a of the second pressure relief mechanism 422 and the inlet 25 of the first pressure relief mechanism 20 of the battery box 41 and of the minimum distance S between the inlet 25 of the first pressure relief mechanism 20 and the electrode connection 421, satisfy the following condition: 0.001≤L / S≤1.

[0116] If the first pressure relief mechanism 20 is located on the base plate 11, L can be 1 to 200 mm and S 5 to 1000 mm. If the first pressure relief mechanism 20 is located on the side plate 12, L can be 1 to 800 mm and S 1 to 1000 mm. L denotes the distance between the second pressure relief opening 422a of the second pressure relief mechanism 422 and the inlet 25 of the first pressure relief mechanism 20 of the battery box 41. If L is too small compared to S, this indicates that the second pressure relief opening 422a of the second pressure relief mechanism 422 is too close to the inlet 25 of the first pressure relief mechanism 20 and the exhaust gap is insufficient, which impairs the smooth escape of the high-temperature and high-pressure gas exiting the battery cell 42.If L is too large compared to S, this indicates that the inlet 25 of the first pressure relief mechanism 20 is located closer to the electrode terminal 421, in this way the high temperature and high pressure gas that escapes to the outside through the first pressure relief mechanism 20 can easily flow to the electrode terminal 421 and impair the insulation performance of the battery 40.

[0117] By ensuring that the L / S ratio meets the condition 0.001≤L / S≤1, the high-temperature and high-pressure gas in the battery cell 42 can be smoothly discharged to the outside via the second pressure relief mechanism 422 and the first pressure relief mechanism 20 during uncontrolled operation of the battery cell 42, and the insulation performance of the battery 40 is not affected as much as possible, thus improving the safety of use and reliability of the battery 40.

[0118] Referring to the above embodiments, in one test example L is 20 mm and S is 200 mm, the calculated L / S is 0.1. The value of L / S must satisfy the condition 0.001 ≤ L / S ≤ 1. The experimental results show no problem that impairs the insulation performance of the electrode connections or the busbar when the high-temperature and high-pressure gas escapes from inside the box body via the first pressure relief mechanism 20.

[0119] Referring to the embodiment described above, in another experimental example, L is assumed to be 10 mm and S to be 300 mm, and the calculated ratio L / S is approximately 0.0333. The value of L / S must satisfy the condition 0.001 ≤ L / S ≤ 1. The experimental results show no problem affecting the insulation performance of the electrode terminals or the busbar when the high-temperature, high-pressure gas escapes from inside the box body via the first pressure relief mechanism 20.

[0120] With reference to the above embodiments, in a further experimental example L is assumed to be 5 mm and S to be 1000 mm, and the calculated L / S is 0.005. The value of L / S must satisfy the condition 0.001 ≤ L / S ≤ 1. In the experimental results, no problem arises that impairs the insulation performance of the electrode terminals or the busbar when the high-temperature and high-pressure gas escapes from the interior of the box body via the first pressure relief mechanism 20.

[0121] Referring to the embodiment described above, in a comparative example, L is 200 mm and S is 20 mm, and the calculated L / S is 10. The value of L / S does not meet the requirement 0.001 ≤ L / S ≤ 1. In the experimental results, a drop in the insulation performance of the electrode terminals or the busbar occurs when the high-temperature and high-pressure gas escapes from inside the box body via the first pressure relief mechanism 20.

[0122] From the above experimental examples and comparative experimental examples, it can be seen that by ensuring that L / S meets the condition 0.001≤L / S≤1, the high-temperature and high-pressure gas in the battery cell 42 can be smoothly discharged to the outside via the second pressure relief mechanism 422 and the first pressure relief mechanism 20 during uncontrolled operation of the battery cell 42, and the insulation performance of the battery 40 is not affected as much as possible, this effectively improves the safety of use and reliability of the battery 40.

[0123] In one aspect of the present disclosure, a power-consuming device is provided which includes the aforementioned battery, wherein the battery is used to supply the power-consuming device with electrical energy. The power-consuming device, which uses the aforementioned battery, offers a maximum level of safety in use.

[0124] Although the present disclosure is described with reference to preferred embodiments, various modifications can be made and components can be replaced by equivalent ones without departing from the scope of the disclosure. In particular, the technical features mentioned in the individual embodiments can be combined arbitrarily, as long as there is no structural conflict. The present disclosure is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions that fall within the scope of the claims. Reference symbol list: 10 boxes; 11 Base plate; 12 Side panel; 13 upper lid; 111 First groove; 112 First lead; 121 Second groove; 11a Outer surface of the base plate; 11b Inner surface of the base plate; 12a Outer surface of the side plate; 20 First pressure relief mechanism; 21 First pressure relief opening; 22 Geometric center; 23 24 Through hole; 25 Admission; 30 support poles; 31 First through hole; 32 Second through hole; 33 Cavity; 40 battery; 41 Battery box; 42 battery cells; 421 Electrode connection; 422 Second pressure relief mechanism; 422a Second pressure relief opening; 50 vehicles; 51 Control; 52 engine.

Claims

Battery box (41), comprising: a box body (10) having several side walls enclosing a receiving space for receiving a battery cell (42); a first pressure relief mechanism (20) provided on at least one of the side walls to relieve the pressure in the battery box (41); wherein the first pressure relief mechanism (20) does not project outwards on the at least one side wall. Battery box (41) according to claim 1, wherein at least one of the side walls comprises a base plate (11) of the box body (10), wherein the first pressure relief mechanism (20) is arranged on the base plate (11). Battery box (41) according to claim 2, wherein the outer surface (11a) of the base plate (11) has a first groove (111), wherein the first pressure relief mechanism (20) is embedded in the first groove (111). Battery box (41) according to claim 3, wherein the base plate (11) has a first projection (112) on its inner surface (11b), the first projection (112) being located on the opposite side of the first groove (111). Battery box (41) according to claim 3 or 4, wherein several first grooves (111) are provided, wherein the several first grooves (111) are arranged at intervals along a first direction (x), and wherein the longitudinal direction of the first groove (111) is parallel to a second direction (y), wherein the first direction (x) is perpendicular to the second direction (y), and wherein the first direction (x) and the second direction (y) are both parallel to the outer surface (11a) of the base plate (11). Battery box (41) according to one of claims 2 to 5, wherein in the height direction (z) of the box body (10) the outer surface (11a) of the base plate (11) is lower than the geometric center (22) of the first pressure relief mechanism (20), and wherein the ratio of the distance W from the outer surface (11a) of the base plate (11) to the geometric center (22) of the first pressure relief mechanism (20) to the height H of the box body (10) satisfies the condition W / H≥0.

001. Battery box (41) according to one of claims 4 to 6, further comprising: a support rod (30) arranged on the inner surface (11b) of the base plate (11) and configured to support the battery cell (42) arranged in the receiving space, wherein in the vertical direction (z) of the box body (10) the support rod (30) is located higher than the first projection (112). Battery box (41) according to claim 7, wherein several support rods (30) are provided, wherein the several support rods (30) are arranged at intervals along a first direction (x) parallel to the outer surface (11b) of the base plate (11), wherein the first projection (112) is located between two adjacent support rods (30). Battery box (41) according to claim 7 or 8, wherein the support rod (30) has a cavity (33), wherein a top surface of the support rod (30), which is used to support the top surface of the battery cell (42), has several first through holes (31) that pass through the cavity (33), wherein at least one side surface of the support rod (30) connected to the top surface has several second through holes (32) that pass through the cavity (33). Battery box (41) according to one of claims 1 to 9, wherein the at least one side wall comprises at least one side plate (12) of the box body (10), wherein the first pressure relief mechanism (20) is arranged on the at least one side plate (12). Battery box (41) according to claim 10, wherein the outer surface (12a) of the side plate (12) has a second groove (121), wherein the first pressure relief mechanism (20) is embedded in the second groove (121). Battery box (41) according to claim 10 or 11, wherein the at least one side wall (12) comprises two opposing side plates (12), wherein at least two first pressure relief mechanisms (20) are provided, each of which is arranged on two opposing side plates (12). Battery box (41) according to one of claims 1 to 12, wherein in the vertical direction (z) of the box body (10) the ratio of the distance W from the outer surface (11a) of the base plate (11) to the geometric center (22) of the first pressure relief mechanism (20) to the height H of the box body (10) satisfies the condition W / H<1. Battery (40), comprising: a battery box (41) according to any one of claims 1 to 13; and several battery cells (42) arranged in the battery box (41). Battery (40) according to claim 14, wherein the battery cell (42) has an electrode connection (421) and a second pressure relief mechanism (422), wherein in the vertical direction (z) of the box body (10) the minimum distance h between a second pressure relief opening (422a) of the second pressure relief mechanism (422) and the electrode connection (421) is greater than the minimum distance L between the second pressure relief opening (422a) of the second pressure relief mechanism (422) and the inlet (25) of the first pressure relief mechanism (20) of the battery box (41). Battery (40) according to claim 14 or 15, wherein the first pressure relief mechanism (20) is located on a side of the second pressure relief mechanism (422) facing away from the electrode connection (421). Battery (40) according to claim 15 or 16, wherein the second pressure relief mechanism (422) and the electrode connection (421) are located at the lower end and the upper end of the battery cell (42), respectively, wherein the first pressure relief mechanism (20) is located on the base plate (11) of the box body (10), and wherein, in the vertical direction (z) of the box body (10), the inlet (25) of the first pressure relief mechanism (20) is lower than the second pressure relief opening (422a) of the second pressure relief mechanism (422). Battery (40) according to one of claims 15 to 17, wherein the orthogonal projection of the second pressure relief mechanism (422) of the battery cell (42) onto the inner surface (11b) of the base plate (11) of the box body (10) does not coincide with the orthogonal projection of the first pressure relief mechanism (20) onto the inner surface (11b) of the base plate (11) of the box body (10). Battery (40) according to one of claims 15 to 18, wherein in the vertical direction (z) of the box body (10) the ratio L / S of the minimum distance L to the minimum distance S between the inlet (25) of the first pressure relief mechanism (20) and the electrode connection (421) satisfies the condition 0.001≤L / S≤1. Power-consuming device comprising: a battery (40) according to any one of claims 14 to 19, wherein the battery (40) is used to supply the power-consuming device with electrical energy.

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