Battery tray and battery pack

Abstract

The utility model discloses a battery tray and a battery pack, the battery tray comprises a tray main body and a pressure module, the tray main body comprises a fixed plate; the pressure module is installed in the tray body and comprises a movable plate and an air bag, the movable plate and the fixed plate are arranged in a spaced mode in the first direction so as to define a containing cavity used for containing a battery, and the air bag abuts against the movable plate so as to apply pressure towards the fixed plate to the movable plate. An air cavity is formed in the air bag, the pressure module comprises an adjusting assembly communicated with the air cavity, and the adjusting assembly is used for adjusting the air pressure in the air cavity. Therefore, the pressure module can apply corresponding pressure according to the state of the battery, adverse effects caused by repeated change of the volume of the battery can be eliminated, the performance of the battery pack is improved, the service life of the pressure module is long, and the after-sale cost can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a battery field especially relates to a battery tray and battery package. BACKGROUND

[0002] The battery will also cause internal pressure due to the effect of side reaction when being used for a long time, thereby affecting the battery structure, the initial efficiency and the cycle performance. Therefore, the all-solid-state battery is operated under a certain restraint pressure in order to eliminate the negative effects caused by expansion. The all-solid-state battery is usually tightened by a pressurizing clamp, and the pressurizing clamp comprises two clamping plates inserted between two surfaces of a battery cell stack and a fastening mechanism for fastening and fixing the two clamping plates to each other. This arrangement can only apply a fixed value. Since the battery package will expand and shrink continuously, the pressurizing clamp will be damaged during use, resulting in a decrease in the total pressure, which in turn has a negative impact on the battery package. SUMMARY

[0003] The utility model discloses at least solve one of the technical problems existing in the prior art. To this end, the utility model provides a battery tray. The pressure module can apply corresponding pressure according to the state of the battery, which is beneficial to eliminate the adverse effects caused by the repeated changes in the volume of the battery, and improves the performance of the battery package.

[0004] The battery tray according to the utility model embodiment comprises a tray body, wherein the tray body comprises a fixed plate; a pressure module is installed in the tray body, and the pressure module comprises a movable plate and an air bag; the movable plate and the fixed plate are arranged in a first direction to define a receiving cavity for accommodating a battery; the air bag abuts against the movable plate to apply pressure to the movable plate towards the fixed plate; the air bag forms an air cavity; the pressure module comprises an adjusting assembly in communication with the air cavity; and the adjusting assembly is used to adjust the air pressure in the air cavity.

[0005] The battery tray according to the utility model embodiment can adjust the air pressure in the air cavity through the adjusting assembly, so that the pressure module can apply corresponding pressure according to the state of the battery, which is beneficial to eliminate the adverse effects caused by the repeated changes in the volume of the battery, improves the performance of the battery package, prolongs the service life of the pressure module, prolongs the service life of the battery package, and reduces the after-sales cost.

[0006] The battery tray according to some embodiments of the utility model comprises an adjusting assembly, wherein the adjusting assembly comprises a pressure increasing valve and a pressure reducing valve; the pressure increasing valve is in communication with the air cavity to input gas into the air cavity; and the pressure reducing valve is in communication with the air cavity to discharge gas outside the air cavity.

[0007] According to the battery tray of some embodiments of the utility model, the battery tray further includes a gas storage part capable of storing gas, the pressure increasing valve and the pressure reducing valve are communicated with the gas storage part respectively, the pressure increasing valve is used for leading the gas in the gas storage part into the air cavity after pressurizing, and the pressure reducing valve is used for leading the gas in the air cavity into the gas storage part after decompressing.

[0008] According to the battery tray of some embodiments of the utility model, the tray body includes a side beam, and at least a part of the side beam is a hollow part to define the gas storage part.

[0009] According to the battery tray of some embodiments of the utility model, the tray body is provided with the side beam on both sides along a second direction, at least one of the two side beams is formed as the gas storage part, and the first direction is arranged to intersect the second direction.

[0010] According to the battery tray of some embodiments of the utility model, the two side beams are both the gas storage part and communicated with each other, the pressure increasing valve is communicated with one of the two side beams, and the pressure reducing valve is communicated with the other side beam.

[0011] According to the battery tray of some embodiments of the utility model, a buffer assembly is further included, the buffer assembly is installed in the air cavity, both ends of the buffer assembly along the first direction are connected with the inner wall of the air cavity respectively, and the buffer assembly is configured to apply a reverse force to the air bag when the length of the air bag exceeds a preset length.

[0012] According to the battery tray of some embodiments of the utility model, the buffer assembly includes an elastic part and a movable rod, two side walls of the air cavity along the first direction are a first side wall and a second side wall respectively, the movable rod is connected with the first side wall, and the elastic part is connected between the movable rod and the second side wall.

[0013] According to the battery tray of some embodiments of the utility model, the buffer assembly further includes a guide sleeve, the guide sleeve is connected with the second side wall, and the guide sleeve is arranged on the outside of the elastic part.

[0014] According to the battery tray of some embodiments of the utility model, the buffer assembly is multiple, and the multiple buffer assemblies are arranged at intervals.

[0015] According to the battery tray of some embodiments of the utility model, the tray body is provided with a first guide part, the movable plate is provided with a second guide part, and the first guide part and the second guide part are matched to guide the movable plate to move along the first direction.

[0016] The battery tray according to some embodiments of the present application is provided with the first guiding part on both sides along the second direction, and the second guiding part is arranged on both ends of the movable plate.

[0017] The battery tray according to some embodiments of the present application is provided with the first guiding part in the form of a guiding groove, and the second guiding part in the form of a guiding wheel, and at least part of the guiding wheel is located in the guiding groove and in rolling contact with the guiding groove.

[0018] The battery tray according to some embodiments of the present application is provided with a protruding part on the side of the movable plate away from the fixed plate, and the air bag is in abutment with the protruding part.

[0019] The battery tray according to some embodiments of the present application is provided with an insulating buffer on the side of the fixed plate facing the movable plate, and / or an insulating buffer on the side of the movable plate facing the fixed plate.

[0020] The battery tray according to some embodiments of the present application further comprises a detection module and a control module, the detection module is used to acquire state information of the battery and air pressure in the air cavity, and the control module is connected with the detection module and the adjusting assembly to adjust the air pressure in the air cavity according to the acquisition result.

[0021] The battery tray according to some embodiments of the present application is provided with an insulating buffer on the side of the fixed plate facing the movable plate, and / or an insulating buffer on the side of the movable plate facing the fixed plate.

[0022] The battery tray according to some embodiments of the present application further comprises a separation plate arranged on the side of the air bag away from the movable plate and used for supporting the air bag, and the side of the separation plate away from the air bag defines a placing cavity, and the control module is located in the placing cavity.

[0023] The battery tray according to some embodiments of the present application further comprises a separation plate arranged on the side of the air bag away from the movable plate and used for supporting the air bag.

[0024] The battery tray according to some embodiments of the present application is provided with the air bag in the form of a metal piece, and / or at least part of the air bag is in the form of a wave shape.

[0025] The utility model further provides a battery pack.

[0026] The battery pack according to the embodiment of the present application comprises: the battery tray and the plurality of batteries according to any one of the above embodiments, and the plurality of batteries are arranged in the accommodating cavity and along the first direction.

[0027] The battery pack and the battery tray have the same advantages compared with the prior art, and details are not described herein.

[0028] The additional aspects and advantages of the present application will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0029] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings in which:

[0030] Figure 1 is a structural schematic view of the battery pack according to the embodiment of the present application;

[0031] Figure 2 is an installation schematic view of the air bag and the buffer assembly according to the embodiment of the present application;

[0032] Figure 3 is a sectional view of the battery pack according to the embodiment of the present application;

[0033] Figure 4 is a front view of the movable plate according to the embodiment of the present application;

[0034] Figure 5 is a top view of the movable plate according to the embodiment of the present application.

[0035] REFERENCE NUMERALS:

[0036] Battery pack 1000, first direction F1, second direction F2,

[0037] Battery tray 100, battery 200,

[0038] Tray body 1, fixed plate 11, edge beam 12, guide groove 121,

[0039] Pressure module 2, movable plate 21, guide wheel 211, protruding part 212, air bag 22, air cavity 221, first side wall 2211, second side wall 2212,

[0040] Adjusting assembly 23, pressure increasing valve 231, pressure reducing valve 232, first on-off valve 233, second on-off valve 234, partition plate 24,

[0041] Buffer assembly 3, elastic member 31, movable rod 32, guide sleeve 33, insulating buffer 4,

[0042] Detection module 5, barometric pressure sensor 51, data acquisition line 52, control module 6.

[0043] First connecting pipe 71, second connecting pipe 72. Detailed Implementation

[0044] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0045] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0046] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0047] Hereinafter, with reference to the accompanying drawings, a battery tray 100 according to an embodiment of the present invention will be described.

[0048] like Figures 1-5As shown, the battery tray 100 according to an embodiment of the present invention includes: a tray body 1 and a pressure module 2. The tray body 1 includes a fixing plate 11. The pressure module 2 is installed inside the tray body 1. The pressure module 2 includes a movable plate 21 and an airbag 22. The movable plate 21 and the fixing plate 11 are spaced apart in a first direction F1 to define a receiving cavity for accommodating the battery 200. The airbag 22 abuts against the movable plate 21 to apply pressure toward the fixing plate 11 to the movable plate 21. An air cavity 221 is formed inside the airbag 22. The pressure module 2 includes an adjustment component 23 communicating with the air cavity 221. The adjustment component 23 is used to adjust the air pressure inside the air cavity 221.

[0049] This helps to eliminate the adverse effects caused by repeated changes in the volume of battery 200, improves the performance of battery pack 1000, and extends the service life of pressure module 2, thus extending the service life of battery pack 1000 and reducing after-sales costs.

[0050] First, such as Figures 1-2 As shown, the battery tray 100 includes a tray body 1 and a pressure module 2. An installation space is formed within the tray body 1, and the tray body 1 extends along a first direction F1 (reference). Figure 1 A fixed plate 11 is provided on one side (shown in the front-back direction). The pressure module 2 includes a movable plate 21 and an airbag 22. The movable plate 21 and the fixed plate 11 are spaced apart along the first direction F1, and a receiving cavity is defined between the movable plate 21 and the fixed plate 11 for accommodating the battery 200. It should be noted that the battery 200 can be an all-solid-state battery or a lithium-ion battery.

[0051] The airbag 22 is located on the side of the movable plate 21 opposite to the receiving cavity. The airbag 22 abuts against the movable plate 21 and applies pressure to the movable plate 21 toward the fixed plate 11 so that the movable plate 21 and the fixed plate 11 can clamp the battery 200 from both sides, so that the battery 200 can maintain suitable pressure conditions. An air cavity 221 is formed inside the airbag 22. The pressure module 2 includes an adjustment component 23, which communicates with the air cavity 221. The adjustment component 23 can inject air into the air cavity 221 or discharge the gas in the air cavity 221 to adjust the air pressure in the air cavity 221.

[0052] Specifically, when the battery 200 is charging, the battery 200 expands, driving the movable plate 21 to move away from the fixed plate 11. The adjusting component 23 can introduce gas into the air chamber 221 to increase the air pressure in the air chamber 221, thereby limiting the outward expansion of the battery 200. When the battery 200 is discharging, the battery 200 contracts, and the airbag 22 drives the movable plate 21 to move closer to the fixed plate 11. The adjusting component 23 can discharge the gas in the air chamber 221 to reduce the air pressure in the air chamber 221, thereby preventing the battery 200 from being over-compressed.

[0053] Through the above settings, the pressure module 2 can dynamically adjust the pressure so that the battery 200 can maintain suitable pressure conditions. This helps to eliminate the adverse effects caused by repeated changes in the volume of the battery 200, such as damage to the electrodes and electrolyte, short circuits leading to overcharging, and unstable capacity. In addition, the structure of the pressure module 2 is not easily damaged, which helps to improve the service life of the pressure module 2, extend the service life of the battery pack 1000, and reduce after-sales costs.

[0054] According to the embodiment of the present utility model, the battery tray 100 can adjust the air pressure in the air chamber 221 by adjusting the adjusting component 23, so that the pressure module 2 can apply corresponding pressure according to the state of the battery 200, which helps to eliminate the adverse effects caused by repeated changes in the volume of the battery 200, improves the performance of the battery pack 1000, and the pressure module 2 has a long service life, which helps to extend the service life of the battery pack 1000 and reduce after-sales costs.

[0055] In some embodiments of this utility model, such as Figures 1-2 As shown, the regulating component 23 includes a pressure boosting valve 231 and a pressure reducing valve 232. The pressure boosting valve 231 is connected to the air chamber 221 and can input gas into the air chamber 221 to increase the air pressure in the air chamber 221. The pressure reducing valve 232 is connected to the air chamber 221 and is used to discharge the gas in the air chamber 221 to the outside of the air chamber 221 to reduce the air pressure in the air chamber 221.

[0056] The above settings ensure that the exhaust and intake of the air chamber 221 do not interfere with each other, which helps to improve the operational stability of the pressure module 2.

[0057] Of course, this invention is not limited to this. The regulating component 23 can also include a pressure regulating valve, which can either input gas into the air chamber 221 or discharge gas from the air chamber 221 outwards. This is beneficial for different design requirements.

[0058] In some embodiments of this utility model, the battery tray 100 further includes a gas storage device for storing gas. A booster valve 231 and a depressurizer valve 232 are respectively connected to the gas storage device. The booster valve 231 is used to pressurize the gas in the gas storage device and then introduce it into the gas chamber 221. The depressurizer valve 232 is used to depressurize the gas in the gas chamber 221 and then introduce it into the gas storage device.

[0059] For example, refer to Figures 1-2As shown, the regulating component 23 also includes a gas storage device, where the gas pressure is greater than atmospheric pressure but less than the gas pressure inside the airbag 22. The regulating component 23 also includes a first switching valve 233 and a second switching valve 234. A pressure-boosting valve 231 is connected to the gas storage device via a first connecting pipe 71, and the first switching valve 233 is located in the first connecting pipe 71. A pressure-reducing valve 232 is connected to the gas storage device via a second connecting pipe 72, and the second switching valve 234 is located in the second connecting pipe 72. It should be noted that the gas in the gas storage device and the airbag 22 can be an inert gas such as helium.

[0060] Specifically, when the battery 200 is charging, it expands and drives the movable plate 21 to move away from the fixed plate 11. This opens the first switch valve 233 and closes the second switch valve 234, allowing the pressure boosting valve 231 to pressurize the gas in the gas storage component and introduce it into the gas chamber 221, thereby increasing the air pressure in the airbag 22. When the battery 200 is discharging, it contracts and the airbag 22 drives the movable plate 21 to move closer to the fixed plate 11. This closes the first switch valve 233 and opens the second switch valve 234, allowing the pressure reducing valve 232 to depressurize the gas in the gas chamber 221 and introduce it into the gas storage component, thereby reducing the air pressure in the airbag 22.

[0061] With the above settings, the gas circulates only between the airbag 22 and the gas storage device, which can ensure the purity of the gas and help improve the service life of the airbag 22. In addition, since the gas pressure in the gas storage device is relatively high, the pressure difference can be reduced, the difficulty of air intake of the airbag 22 can be reduced, and the design rationality of the pressure module 2 can be improved.

[0062] In some embodiments of this utility model, such as Figures 1-3 As shown, the tray body 1 includes a side beam 12, at least a portion of which is hollow to define the gas storage component. This design allows for full utilization of space, increasing the energy density of the battery pack 1000. Furthermore, the gas storage component is separated from the installation space within the tray body 1, reducing the risk of damage to the gas storage component in extreme situations (such as gas leakage), thus improving the safety and reliability of the battery tray 100.

[0063] In some embodiments of this utility model, such as Figure 1 As shown, side beams 12 can be provided on both sides of the pallet body 1 along the second direction F2. The two side beams 12 are respectively connected to both ends of the fixing plate 11 along its length, and at least one of the two side beams 12 is formed as an air-storing component. The first direction F1 intersects with the second direction F2. For example, the first direction F1 can be set as... Figure 1 The forward and backward directions are shown, and the second direction F2 is set as... Figure 1 The left and right directions are shown.

[0064] The above settings can shorten the distance between the gas storage component and the airbag 22, which is beneficial for shortening the length of the first connecting pipe 71 and the second connecting pipe 72. In addition, the side beam 12 is larger in size, which can reserve more space for the gas storage component and facilitate the layout.

[0065] In some embodiments of this utility model, such as Figure 1 As shown, both side beams 12 can be configured as air storage devices and connected to each other. The pressure boosting valve 231 and the pressure reducing valve 232 are arranged at intervals along the second direction F2. The pressure boosting valve 231 can be connected to the closer one of the two side beams 12, and the pressure reducing valve 232 can be connected to the other one of the two side beams 12.

[0066] The above settings can further shorten the length of the first connecting pipe 71 and the second connecting pipe 72, which helps to reduce costs and makes the switching between the gas supply state and the gas storage state of the gas storage device smoother, thereby improving the operational stability of the pressure module 2.

[0067] In some embodiments of the present invention, the battery tray 100 of the present invention further includes a buffer component 3, which is installed in the air cavity 221. The two ends of the buffer component 3 along the first direction F1 are respectively connected to the inner wall of the air cavity 221. The buffer component 3 is configured to apply a reverse force to the air bladder 22 when the length of the air bladder 22 exceeds the preset length.

[0068] For example, refer to Figures 1-2 As shown, the battery tray 100 includes a buffer assembly 3, which is installed inside the air cavity 221. The buffer assembly 3 extends along a first direction F1, and its two ends along the first direction F1 are respectively connected to the inner wall of the air cavity 221. When the length of the airbag 22 exceeds a preset length, the buffer assembly 3 can apply a reverse force to the airbag 22. It should be noted that the preset length is the length of the airbag 22 when the battery 200 is in its initial state. Exceeding the preset length can be less than or greater than the preset length.

[0069] Specifically, when the battery 200 is discharging, it contracts, and the airbag 22 increases in size along the first direction F1 to push the movable plate 21 toward the fixed plate 11. The buffer assembly 3 can apply a reverse force away from the fixed plate 11 to the inner wall of the airbag 22 near the movable plate 21 to slow down the expansion rate of the airbag 22. When the battery 200 is charging, it expands, and the movable plate 21 can compress the size of the airbag 22 along the first direction F1. The buffer assembly 3 can apply a reverse force toward the fixed plate 11 to the inner wall of the airbag 22 near the movable plate 21 to slow down the compression rate of the airbag 22.

[0070] The above-mentioned design slows down the deformation rate of the airbag 22, thus extending its service life. Furthermore, when the battery 200 experiences extreme conditions leading to excessive expansion, the buffer assembly 3 can limit the deformation range of the airbag 22, further extending its service life. This, in turn, reduces the failure rate of the battery pack 1000, extends its service life, and lowers after-sales costs.

[0071] In some embodiments of this utility model, such as Figures 1-2 As shown, the buffer assembly 3 includes an elastic element 31 and a movable rod 32. The elastic element 31 can be configured as a spring. The two side walls of the air cavity 221 in the first direction F1 are a first side wall 2211 and a second side wall 2212, respectively. The movable rod 32 extends along the first direction F1, with one end connected to the first side wall 2211 and the elastic element 31 connecting the other end of the movable rod 32 to the second side wall 2212. For example, the side wall of the air cavity 221 away from the movable plate 21 can be designated as the first side wall 2211, and the side wall of the air cavity 221 closer to the movable plate 21 can be designated as the second side wall 2212.

[0072] The above settings can shorten the length of the elastic element 31, which helps to reduce costs and makes the performance of the buffer assembly 3 easier to control, thus improving the support effect of the buffer assembly 3 on the airbag 22.

[0073] In some embodiments of this utility model, such as Figure 2 As shown, the buffer assembly 3 also includes a guide sleeve 33, which is connected to the second side wall 2212. The guide sleeve 33 is sleeved on the outside of the elastic member 31 and engages with the elastic member 31 for limiting. The guide sleeve 33 can limit the deformation direction of the elastic member 31 to a certain extent. Thus, it can be ensured that the elastic member 31 deforms only in the first direction F1, which helps to improve the reliability of the buffer assembly 3.

[0074] In some embodiments of this utility model, such as Figure 2 As shown, multiple buffer components 3 can be configured, with the multiple buffer components 3 spaced apart. For example, three buffer components 3 can be configured, arranged in a triangular pattern; or, multiple buffer components 3 can be configured, arranged at intervals along a direction perpendicular to the first direction F1 (such as the second direction F2). This invention does not limit the scope of the invention. Therefore, the buffering effect of the buffer components 3 can be improved.

[0075] In some embodiments of this utility model, such as Figures 3-4As shown, the tray body 1 is provided with a first guide portion, and the movable plate 21 is provided with a second guide portion. The first guide portion and the second guide portion cooperate to guide the movable plate 21 to move along the first direction F1. This improves the movement accuracy of the movable plate 21, allowing it to hold the battery 200 more stably and improving the reliability of the battery pack 1000.

[0076] In some embodiments of this utility model, such as Figure 1 and Figure 4 As shown, first guide portions can be provided on both sides of the battery tray 100 along the second direction F2, that is, first guide portions can be provided on the inner sides of the two side beams 12, and second guide portions can be provided at both ends of the movable plate 21. The second guide portions at both ends can respectively cooperate with the first guide portions on the corresponding sides. It should be noted that the first direction F1 and the second direction F2 are intersecting. For example, the first direction F1 can be set as... Figure 1 The forward and backward directions are shown, and the second direction F2 is set as... Figure 1 The left and right directions are shown. This ensures better accuracy of the movement of the movable plate 21.

[0077] In some embodiments of this utility model, such as Figures 3-4 As shown, the first guide portion can be configured as a guide groove 121, and the second guide portion can be configured as a guide wheel 211, with at least a portion of the guide wheel 211 located within the guide groove 121 and in rolling contact with the guide groove 121. It should be noted that lubricating oil can be coated inside the guide groove 121 to further reduce the friction between the guide wheel 211 and the guide groove 121.

[0078] The above settings can reduce the friction between the movable plate 21 and the battery tray 100, making the movement of the movable plate 21 smoother, so as to ensure that the pressure applied by the movable plate 21 to the battery 200 is more stable and precise, which is conducive to improving the overall performance of the battery pack 1000.

[0079] In some embodiments of this utility model, such as Figure 1 and Figure 5 As shown, a protrusion 212 can be provided on the side of the movable plate 21 facing away from the fixed plate 11, and the airbag 22 is adapted to abut against the protrusion 212. With the above arrangement, the structural strength of the movable plate 21 can be improved, the deformation range of the movable plate 21 can be reduced, so that the pressure applied by the movable plate 21 to the battery 200 is more uniform, and the airbag 22 can be more easily arranged, thereby improving the design rationality of the battery pack 1000.

[0080] In some embodiments of this utility model, such as Figure 1As shown, an insulating buffer 4 can be provided on the side of the fixed plate 11 facing the movable plate 21. The insulating buffer 4 is used to separate the fixed plate 11 from the battery 200. It should be noted that the insulating buffer 4 can be made of elastic insulating materials such as silicone rubber or neoprene rubber. This avoids direct contact between the battery 200 and the fixed plate 11, helps prevent leakage, and improves the safety of the battery 200.

[0081] In some embodiments of this utility model, such as Figure 1 As shown, an insulating buffer 4 is provided on the side of the movable plate 21 facing the fixed plate 11. The insulating buffer 4 is used to separate the movable plate 21 from the battery 200. It should be noted that the insulating buffer 4 can be made of elastic insulating materials such as silicone rubber or neoprene rubber. This avoids direct contact between the battery 200 and the movable plate 21, helps prevent leakage, and improves the safety of the battery 200.

[0082] In some embodiments of this utility model, such as Figure 1 As shown, an insulating buffer 4 can be provided on the side of the side beam 12 facing the battery 200. The insulating buffer 4 is used to separate the side beam 12 from the battery 200. It should be noted that the insulating buffer 4 can be made of elastic insulating materials such as silicone rubber or neoprene rubber. This avoids direct contact between the battery 200 and the side beam 12, helps prevent leakage, and improves the safety of the battery 200.

[0083] In some embodiments of this utility model, such as Figure 1 As shown, the battery tray 100 of this utility model embodiment further includes: a detection module 5 and a control module 6. The detection module 5 is used to acquire the status information of the battery 200 and the air pressure in the air chamber 221. The control module 6 is connected to the detection module 5 and the adjustment component 23 respectively to adjust the air pressure in the air chamber 221 according to the acquisition results.

[0084] It should be noted that during the charging process of battery 200, the rate of change of charging pressure of airbag 22 is the ratio of the difference between the maximum and minimum pressure of airbag 22 to the charging capacity of battery 200, where the charging capacity is the product of the time it takes for battery 200 to reach the upper limit voltage from the lower limit voltage and the charging current; during the discharging process of battery 200, the rate of change of discharging pressure of airbag 22 is the ratio of the difference between the maximum and minimum pressure of airbag 22 to the discharging capacity of battery 200, where the discharging capacity is the product of the time it takes for battery 200 to reach the lower limit voltage from the upper limit voltage and the discharging current.

[0085] Specifically, when the battery 200 is charging, the detection module 5 can detect the current capacitance of the battery 200 and the current air pressure in the air chamber 221. The detection module 5 can transmit the acquired results to the control module 6. The control module 6 can obtain a first preset air pressure by multiplying the current capacitance by the rate of change of charging pressure. If the first preset air pressure is greater than the current air pressure, the adjustment component 23 can introduce gas into the air chamber 221 to adjust the air pressure in the air chamber 221 to the first preset air pressure. When the battery 200 is discharging, the detection module 5 can detect the current capacitance of the battery 200 and the current air pressure in the air chamber 221. The detection module 5 can transmit the acquired results to the control module 6. The control module 6 can obtain a second preset air pressure by multiplying the current capacitance by the rate of change of discharging pressure. If the second preset air pressure is less than the current air pressure, the adjustment component 23 can discharge the gas in the air chamber 221 to adjust the air pressure in the air chamber 221 to the second preset air pressure.

[0086] Through the above settings, the pressure applied by the pressure module 2 can correspond to the state of the battery 200, so that the battery 200 has a good operating environment and the overall performance of the battery pack 1000 is improved.

[0087] In some embodiments of this utility model, such as Figure 1 As shown, the detection module 5 includes a pressure sensor 51 and an information acquisition line 52. At least a portion of the pressure sensor 51 extends into the air cavity 221 of the airbag 22, allowing it to detect the air pressure within the airbag 22. The information acquisition line 52 extends into the battery 200 and is used to acquire the status information of the battery 200. The control module 6 is connected to both the pressure sensor 51 and the information acquisition line 52. This ensures the detection accuracy of the detection module 5 and improves the reliability of the battery tray 100.

[0088] In some embodiments of this utility model, the tray body 100 further includes a partition 24, which is disposed on the side of the airbag 22 away from the movable plate 21 and is used to support the airbag 22. The side of the partition 24 away from the airbag 22 defines a placement cavity, and the control module 6 is located in the placement cavity.

[0089] For example, refer to Figure 1 As shown, the tray body 100 also includes a partition 24, which is located on the side of the airbag 22 facing away from the movable plate 21. The partition 24 forms a mounting cavity that opens towards the movable plate 21. The airbag 22 is fitted into the mounting cavity and connected to the partition 24. The partition 24 supports the airbag 22 so that it can better apply pressure to the movable plate 21. Simultaneously, the side of the partition 24 facing away from the airbag 22 defines a placement cavity, within which the control module 6 is located. Specifically, the airbag 22 can be fixed to the partition 24 using screws.

[0090] The above settings can make full use of the space inside the tray body 1, which is conducive to improving the integration of the battery tray 100. It can also maintain a sufficient distance between the control module 6 and the battery 200, reduce the mutual influence between the control module 6 and the battery 200, and improve the stability of the battery pack 1000.

[0091] In some embodiments of this utility model, reference is made to Figure 1 As shown, the tray body 100 also includes a partition 24, which is located on the side of the airbag 22 facing away from the movable plate 21. The partition 24 forms a mounting cavity that opens towards the movable plate 21. The airbag 22 is matched with the mounting cavity and is installed inside the mounting cavity and connected to the partition 24. The partition 24 supports the airbag 22 so that the airbag 22 can better apply pressure to the movable plate 21. This improves the installation stability of the airbag 22 and allows for more flexible arrangement of the airbag 22, thus improving the design rationality of the battery pack 100.

[0092] In some embodiments of this invention, the airbag 22 can be made of metal, such as stainless steel or aluminum alloy. Alternatively, the airbag 22 can be made of elastic non-metallic materials such as silicone rubber or neoprene rubber. This improves the wear resistance of the airbag 22 and extends its service life.

[0093] In some embodiments of this utility model, such as Figure 2 As shown, the outer peripheral wall of the airbag 22 is formed in a wavy shape. Of course, the airbag 22 can also be divided into multiple mutually movable segments, and this invention does not limit this. Thus, the airbag 22 can be easily deformed, so that the airbag 22 can better apply pressure to the movable plate 21.

[0094] This utility model also proposes a battery pack 1000.

[0095] The battery pack 1000 according to an embodiment of the present invention includes: a battery tray 100 according to any of the above embodiments and a plurality of batteries 200, wherein the plurality of batteries 200 are disposed in a receiving cavity and arranged along a first direction F1. It is understood that by arranging the plurality of batteries 200 along the first direction F1, the maximum deformation direction of the plurality of batteries 200 can be made consistent with the direction of pressure applied by the pressure module 2, so that the battery tray 100 can better restrain the batteries 200, thereby improving the overall performance of the battery pack 100.

[0096] According to the embodiment of the present utility model, the battery pack 1000 has a long service life and low after-sales cost, which helps to improve the product competitiveness of the battery pack 1000.

[0097] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0098] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery tray (100), characterized in that, include; The pallet body (1) includes a fixing plate (11); A pressure module (2) is installed inside the tray body (1). The pressure module (2) includes a movable plate (21) and an airbag (22). The movable plate (21) and the fixed plate (11) are spaced apart in a first direction to define a receiving cavity for accommodating the battery (200). The airbag (22) abuts against the movable plate (21) to apply pressure toward the fixed plate (11) to the movable plate (21). An air chamber (221) is formed inside the airbag (22). The pressure module (2) also includes an adjustment component (23) communicating with the air chamber (221). The adjustment component (23) is used to adjust the air pressure inside the air chamber (221).

2. The battery tray (100) according to claim 1, characterized in that, The regulating component (23) includes a pressure boosting valve (231) and a pressure reducing valve (232). The pressure boosting valve (231) is connected to the air chamber (221) to input gas into the air chamber (221), and the pressure reducing valve (232) is connected to the air chamber (221) to discharge gas out of the air chamber (221).

3. The battery tray (100) according to claim 2, characterized in that, The battery tray (100) also includes a gas storage device for storing gas. The pressure boosting valve (231) and the pressure reducing valve (232) are respectively connected to the gas storage device. The pressure boosting valve (231) is used to pressurize the gas in the gas storage device and then introduce it into the gas chamber (221). The pressure reducing valve (232) is used to depressurize the gas in the gas chamber (221) and then introduce it into the gas storage device.

4. The battery tray (100) according to claim 3, characterized in that, The tray body (1) includes a side beam (12), at least a portion of which is hollow to define the gas storage element.

5. The battery tray (100) according to claim 4, characterized in that, The pallet body (1) is provided with side beams (12) on both sides along the second direction, and at least one of the two side beams (12) is formed as the gas storage component, and the first direction and the second direction are intersected.

6. The battery tray (100) according to claim 5, characterized in that, Both of the side beams (12) are gas storage components and are connected to each other. The pressure boosting valve (231) is connected to one of the two side beams (12), and the pressure reducing valve (232) is connected to the other of the two side beams (12).

7. The battery tray (100) according to claim 1, characterized in that, It also includes a buffer assembly (3), which is installed in the air cavity (221). The two ends of the buffer assembly (3) along the first direction are respectively connected to the inner wall of the air cavity (221). The buffer assembly (3) is configured to apply a reverse force to the air bladder (22) when the length of the air bladder (22) exceeds the preset length.

8. The battery tray (100) according to claim 7, characterized in that, The buffer assembly (3) includes an elastic element (31) and a movable rod (32). The two side walls of the air chamber (221) in the first direction are a first side wall (2211) and a second side wall (2212), respectively. The movable rod (32) is connected to the first side wall (2211), and the elastic element (31) is connected between the movable rod (32) and the second side wall (2212).

9. The battery tray (100) according to claim 8, characterized in that, The buffer assembly (3) further includes a guide sleeve (33), which is connected to the second sidewall (2212) and is sleeved on the outside of the elastic member (31).

10. The battery tray (100) according to claim 7, characterized in that, There are multiple buffer components (3), and the multiple buffer components (3) are arranged at intervals.

11. The battery tray (100) according to claim 1, characterized in that, The pallet body (1) is provided with a first guide portion, and the movable plate (21) is provided with a second guide portion. The first guide portion and the second guide portion cooperate to guide the movable plate (21) to move along the first direction.

12. The battery tray (100) according to claim 11, characterized in that, The battery tray (100) is provided with the first guide portion on both sides along the second direction, and the movable plate (21) is provided with the second guide portion at both ends. The first direction and the second direction are intersected.

13. The battery tray (100) according to claim 11, characterized in that, The first guide portion is constructed as a guide groove (121), and the second guide portion is constructed as a guide wheel (211). At least a portion of the guide wheel (211) is located in the guide groove (121) and rolls in contact with the guide groove (121).

14. The battery tray (100) according to claim 1, characterized in that, The movable plate (21) has a protrusion (212) on the side opposite to the fixed plate (11), and the airbag (22) abuts against the protrusion (212).

15. The battery tray (100) according to claim 1, characterized in that, An insulating buffer (4) is provided on the side of the fixed plate (11) facing the movable plate (21); and / or, An insulating buffer (4) is provided on the side of the movable plate (21) facing the fixed plate (11).

16. The battery tray (100) according to any one of claims 1-15, characterized in that, Also includes: The detection module (5) and the control module (6) are used to obtain the status information of the battery (200) and the air pressure in the air chamber (221). The control module (6) is connected to the detection module (5) and the adjustment component (23) respectively to adjust the air pressure in the air chamber (221) according to the obtained results.

17. The battery tray (100) according to claim 16, characterized in that, The detection module (5) includes a pressure sensor (51) and an information acquisition line (52). The pressure sensor (51) is used to detect the air pressure inside the airbag (22), and the information acquisition line (52) is used to acquire the status information of the battery (200). The control module (6) is connected to the pressure sensor (51) and the information acquisition line (52) respectively.

18. The battery tray (100) according to claim 16, characterized in that, The tray body (1) also includes a partition (24), which is located on the side of the airbag (22) away from the movable plate (21) and is used to support the airbag (22). The side of the partition (24) away from the airbag (22) defines a placement cavity, and the control module (6) is located in the placement cavity.

19. The battery tray (100) according to any one of claims 1-15, characterized in that, The tray body (1) also includes a partition (24), which is located on the side of the airbag (22) away from the movable plate (21) and is used to support the airbag (22).

20. The battery tray (100) according to any one of claims 1-15, characterized in that, The airbag (22) is a metal part; and / or, at least a portion of the airbag (22) is constructed in a wavy shape.

21. A battery pack (1000), characterized in that, include: The battery tray (100) and a plurality of batteries (200) according to any one of claims 1-20, wherein the plurality of batteries (200) are disposed in the receiving cavity and arranged along the first direction.

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