Bottom support structure, battery device and electric equipment

Abstract

The utility model discloses a bottom support structure, a battery device and electric equipment, the bottom support structure comprises a bearing plate, a bottom plate and a plurality of partition plates, the bearing plate is used for bearing a plurality of battery monomers and is provided with a plurality of flow guide holes corresponding to pressure relief ports of the battery monomers; the bottom plate is arranged on one side, deviating from the plurality of battery monomers, of the bearing plate; the plurality of partition plates are arranged between the bearing plate and the bottom plate side by side and are matched with the bearing plate and the bottom plate to form a plurality of first flow guide channels, and each first flow guide channel is communicated with the pressure relief opening of the battery monomer through the corresponding flow guide hole. The first flow guide channels are integrated in the bottom support structure, so that fluid released by the battery monomers due to thermal runaway and the like can be directionally guided along the first flow guide channels, the number of influenced battery monomers is reduced, and the reliability is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a bottom support structure, a battery device and an electric equipment. BACKGROUND

[0002] With the popularity of mobile devices and the development of electric vehicles, batteries have gradually become a widely used battery type. A battery can generally include one or more battery monomers, and the battery monomer includes a shell and an electrode assembly arranged inside the shell. In order to keep the inside of the battery monomer within a normal pressure range, in some cases, a pressure relief mechanism is arranged on the shell of the battery monomer. When some of the battery monomers are in thermal runaway, the thermal runaway gas flow and / or liquid flow, etc. can be released through the pressure relief mechanism of the battery monomer, which can reduce the reliability of the battery.

[0003] The above statements are only used to provide background technical information related to the present application, and do not necessarily constitute the prior art. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a bottom support structure, a battery device and an electric equipment, aiming to improve the problem of battery pressure relief.

[0005] To achieve the above technical effects, one technical scheme adopted by the present application is to provide a bottom support structure, which comprises:

[0006] a support plate configured to support a plurality of battery monomers and provided with a plurality of flow guide holes corresponding to pressure relief openings of the plurality of battery monomers;

[0007] a bottom plate arranged on a side of the support plate away from the plurality of battery monomers;

[0008] a plurality of partition plates arranged side by side between the support plate and the bottom plate and cooperating with the support plate and the bottom plate to form a plurality of first flow guide channels, each first flow guide channel being in communication with the pressure relief opening of the battery monomer through a corresponding flow guide hole.

[0009] In the example of the present application, a plurality of first flow guide channels are integrated inside the bottom support structure, so that the fluid released by the battery monomers due to thermal runaway or the like can be directed along the first flow guide channels, reducing the number of other battery monomers affected, thereby helping to improve the reliability.

[0010] In the example of the present application, a plurality of first flow guide channels are integrated inside the bottom support structure, so that the fluid released by the battery monomers due to thermal runaway or the like can be directed along the first flow guide channels, reducing the number of other battery monomers affected, thereby helping to improve the reliability.

[0011] In the example, by limiting the extension direction of the first flow channel and the distribution mode of the battery cells, the number of the first flow channels can be adapted to the number of rows of the battery cells, so that the fluid discharged by the battery cells only affects other battery cells in the same row when flowing along the first flow channel, and has less effect on battery cells in other rows.

[0012] Each battery cell includes two main surfaces arranged opposite to each other, and has a first dimension in a spacing direction of the two main surfaces and a second dimension in a direction perpendicular to the spacing direction and parallel to the support plate. The first dimension is smaller than the second dimension, and the spacing direction of the two main surfaces is parallel to the first direction.

[0013] In the example, by limiting the spacing direction of the two main surfaces of the battery cell to be parallel to the first direction, the number of battery cells in each row is reduced, and the number of affected battery cells is further reduced.

[0014] The plurality of first flow channels are arranged in the first direction and extend in a second direction perpendicular to the first direction. The bottom support structure further includes a discharge port and a second flow channel between the support plate and the bottom plate. The second flow channel is arranged on at least one side of the plurality of first flow channels in the second direction and extends in the first direction. The plurality of first flow channels are respectively connected to the discharge port through the second flow channel.

[0015] In the example, the plurality of first flow channels are converged through the second flow channel and then discharged to the discharge port, which can reduce the number of discharge ports and related components (such as hydraulic valves), and reduce costs.

[0016] The plurality of first flow channels are isolated from each other, and the bottom support structure further includes a plurality of discharge ports respectively connected to the plurality of first flow channels.

[0017] In the example, by isolating the plurality of first flow channels and arranging the discharge ports respectively, the number of affected battery cells can be further reduced, and the reliability can be further improved.

[0018] The discharge port is arranged on the bottom plate. In the example, by arranging the discharge port on the bottom plate, on the one hand, the molding of the discharge port can be facilitated, and on the other hand, the discharge port and the battery cells can be spaced apart to reduce the effect of the fluid on the battery cells during discharge.

[0019] The plurality of partitions are integrally formed with the support plate. In the example, the molding difficulty of the support plate and the partition can be reduced, and the molding process can be simplified.

[0020] The plurality of first flow guide channels are arranged at intervals along a first direction and extend along a second direction perpendicular to the first direction. The support plate comprises at least two sub-support plates spliced with each other along the first direction, and each sub-support plate is provided with at least two first flow guide channels. The plurality of sub-support plates in the example can be formed separately, so as to facilitate the forming and processing of the support plate. By arranging the first flow guide channels extending along the second direction on the sub-support plates, the integrity of the first flow guide channels can be maintained, and the splicing of the plurality of sub-support plates can be facilitated.

[0021] Each sub-support plate has a splicing edge for splicing with other sub-support plates, and a baffle is arranged along the splicing edge. The baffles on the splicing edges of the two adjacent sub-support plates contact each other. In the example, by arranging the baffles along the splicing edges of the sub-support plates, the contact area of the adjacent sub-support plates can be increased, so as to improve the splicing structure strength of the adjacent sub-support plates.

[0022] The thickness of the baffles on the splicing edges of the sub-support plates along the first direction is smaller than the thickness of the baffles at other positions except the splicing edges along the first direction, so as to improve the space utilization of the sub-support plates.

[0023] The application also provides a battery device comprising the support structure of any one of the above examples and a plurality of battery monomers supported on the support plate.

[0024] The application also provides an electrical equipment comprising the battery device in the above example. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0026] Figure 1 is a structural schematic diagram of an example of the electrical equipment of the application;

[0027] Figure 2 is a structural schematic diagram of an example of the battery device of the application;

[0028] Figure 3 is a structural schematic diagram of an example of the battery monomer of the application;

[0029] Figure 4 is a structural schematic diagram of an example of the support structure of the application;

[0030] Figure 5 is a structural schematic diagram of an example of the support plate of the application;

[0031] Figure 6 is a structural schematic diagram of an example of the bottom plate of the application;

[0032] Figure 7 is a structural schematic diagram of another example of the bottom support structure of the application;

[0033] Figure 8 is Figure 7 is a partial enlarged view of the 7A part in

[0034] Figure 9 is a structural schematic diagram of yet another example of the bottom support structure of the application.

[0035] 1000, electrical equipment;

[0036] 100, battery device; 10, battery cell; 11, pressure relief port; 12, main surface;

[0037] 20, bottom support structure; 21, support plate; 211, flow guide hole; 212, baffle; 213, sub-support plate; 214, splicing edge; 22, bottom plate; 221, discharge port; 23, partition plate; 24, first flow guide channel; 25, second flow guide channel;

[0038] 30, box body; 31, first shell; 32, second shell;

[0039] 200, driving device;

[0040] 300, control device;

[0041] 3a, first size; 3b, second size; 4a, first direction; 4b, second direction. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the application.

[0043] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited. It should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" in the description of the present application should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in this text can be understood according to the specific circumstances.

[0044] In the present application, the word "exemplary" is used to mean "serving as an example, instance, or illustration." Any implementation described as "exemplary" in the present application is not necessarily to be construed as preferred or advantageous over other implementations. The following description is presented to enable any person skilled in the art to make and use the present application. In the following description, for the purpose of explanation, details are set forth. It is apparent to those skilled in the art that the present application can be practiced without the use of these specific details. In other instances, well-known structures and processes are not described in detail in order to avoid obscuring the description of the present application. Thus, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features presented herein.

[0045] With the development of market situation, the application of battery is more and more extensive. The battery is not only applied to the energy storage power supply system of hydropower, thermal power, wind power and solar power station, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric vehicles, electric vehicles, military equipment and aerospace. With the continuous expansion of the application field of battery, the demand of its market is also increasing. The battery in the example of the application can be used for mobile phones, tablets, laptops, electric toys, electric tools, electric vehicles, electric vehicles, ships, spacecraft power equipment. The battery can be used to provide power for the power equipment, and the battery can also be used to power the electronic devices on the power equipment.

[0046] The battery device can include a box body, and the battery cells can be installed in the box body. The battery device can generally include one or more battery cells, and when a plurality of battery cells are arranged in the box body, the plurality of battery cells can be arranged according to a preset rule; the plurality of battery cells can be connected in series, connected in parallel, or connected in series and parallel. Other functional components can also be provided on the battery device.

[0047] Taking a lithium battery as an example, when the lithium battery is used, heat accumulation occurs inside the battery, which can easily cause the internal pressure of the battery to rise and explode. Therefore, a pressure relief structure needs to be installed on the cover plate of the square battery to discharge the internal high pressure. This pressure relief mechanism is a one-way valve that only allows excess gas in the battery to be discharged and does not allow gas from outside the battery to enter.

[0048] In some technologies, since a plurality of battery cells are arranged in the battery device, when the pressure of the battery cell is released, the gas flow output by the battery cell can affect the adjacent battery cell, thereby causing thermal runaway in the battery device and affecting the reliability of the battery device.

[0049] The bottom support structure can be used for the battery device, wherein the bottom support structure includes a supporting plate, a bottom plate, and a plurality of partition plates. The supporting plate is used to support a plurality of battery cells and is provided with a plurality of flow guide holes corresponding to the pressure relief openings of the plurality of battery cells. The bottom plate is arranged on the side of the supporting plate away from the plurality of battery cells. The plurality of partition plates are arranged side by side between the supporting plate and the bottom plate and cooperate with the supporting plate and the bottom plate to form a plurality of first flow guide channels. Each first flow guide channel is connected to the pressure relief opening of the battery cell through the corresponding flow guide hole. The flow guide holes on the supporting plate in the example correspond to the pressure relief openings of the battery cells, and the plurality of flow guide holes can be connected to the plurality of first flow guide channels, respectively. Thus, the fluid released by the battery cell can be output to the first flow guide channel through the corresponding flow guide hole, so that the heat can be output in a directional manner, reducing the mutual influence between the battery cells, thereby helping to improve the reliability of the battery cells. The fluid described in the application can be gas, liquid, or a fluid containing both gas and liquid.

[0050] Referring to Figure 1 The bottom support structure 20 described in the present application can be used in an electrical device 1000, which can be an energy storage power system such as a hydroelectric power station, a thermal power station, a wind power station, and a solar power station, or an electric vehicle such as an electric bicycle, an electric motorcycle, and an electric automobile, or a power source for other systems. In the example of the present application, the reliability of the electrical device 1000 can be improved by using the bottom support structure 20.

[0051] Referring to Figure 2 The bottom support structure 20 described in the present application can be used in a battery device 100, which includes at least two battery monomers 10 arranged side by side inside the battery device 100. The bottom support structure 20 can be used in correspondence with the positions of the battery monomers 10 to direct the fluid released by the battery monomers 10 to be discharged along a preset trajectory, thereby facilitating pressure relief and temperature control inside the battery device 100 and helping to improve the reliability of the battery device 100.

[0052] Referring to Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The present application proposes an example of a bottom support structure 20, which includes a support plate 21, a bottom plate 22, and a plurality of partition plates 23. The support plate 21 is used to support a plurality of battery monomers 10 and is provided with a plurality of flow guide holes 211 corresponding to the pressure relief ports 11 of the plurality of battery monomers 10, respectively. The bottom plate 22 is arranged on the side of the support plate 21 away from the plurality of battery monomers 10. The plurality of partition plates 23 are arranged side by side between the support plate 21 and the bottom plate 22 and cooperate with the support plate 21 and the bottom plate 22 to form a plurality of first flow guide channels 24. Each first flow guide channel 24 is connected to the pressure relief port 11 of the battery monomer 10 through the corresponding flow guide hole 211.

[0053] The support plate 21 can serve as a component for supporting the battery monomer 10, and the battery monomer 10 can be placed above the support plate 21. The support plate 21 is provided with flow guide holes 211, which can be through holes penetrating through the thickness direction of the support plate 21. In the example, the flow guide holes 211 can be through holes parallel to the thickness direction of the support plate 21, and the length direction of the flow guide holes 211 can also be non-parallel to the thickness direction of the support plate 21. Alternatively, along the length direction of the flow guide holes 211, the inner diameters of the flow guide holes 211 can be equal. Alternatively, along the length direction of the flow guide holes 211, the inner diameters of the flow guide holes 211 can also be arranged in a variable manner. The flow guide holes 211 are multiple, and the multiple flow guide holes 211 are arranged at intervals on the support plate 21. In the example, the support plate 21 can be used to support multiple battery monomers 10. Since each battery monomer 10 is usually provided with a pressure relief port 11, multiple flow guide holes 211 can be arranged one-to-one with the pressure relief ports 11 of the multiple battery monomers 10, so that the fluid output by the pressure relief port 11 of the battery monomer 10 can enter the corresponding flow guide hole 211.

[0054] The bottom plate 22 is arranged on the side of the support plate 21 away from the battery monomer 10, and the support plate 21 and the bottom plate 22 have a gap therebetween, so that the support plate 21 can be at least partially suspended relative to the bottom plate 22. Alternatively, the support plate 21 can be arranged in parallel with the bottom plate 22.

[0055] The partition plate 23 is arranged between the bottom plate 22 and the support plate 21, and is used to support the support plate 21, so that the support plate 21 is at least partially suspended on the bottom plate 22. The bottom plate 22, the partition plate 23, and the support plate 21 form a first flow guide channel 24, wherein multiple partition plates 23 are arranged side by side between the support plate 21 and the bottom plate 22, so that multiple first flow guide channels 24 arranged side by side are formed between the support plate 21 and the bottom plate 22. Each first flow guide channel 24 corresponds to at least one flow guide hole 211, so that each first flow guide channel 24 is communicated with the pressure relief port 11 of the battery monomer 10 through the corresponding flow guide hole 211. The fluid output from the pressure relief port 11 of the battery monomer 10 can sequentially pass through the corresponding flow guide hole 211 and enter the first flow guide channel 24, and then flow in a preset direction along the trajectory formed by the first flow guide channel 24. In the example, the multiple partition plates 23 can be arranged at intervals along the first direction 4a, so that the flow guide area is formed in the bottom support structure 20 along the first direction 4a. In the example, the width and distance of the multiple partition plates 23 can be determined according to the size of the battery monomer 10, so that the multiple first flow guide channels 24 are adapted to the positions of the battery monomers 10.

[0056] When the fluid output by the battery cell 10 enters the corresponding first flow guide channel 24 via the pressure relief port 11 and the corresponding flow guide hole 211, the fluid can flow along the preset trajectory under the guidance and restriction of the first flow guide channel 24, so as to control the flow direction of the fluid output by the battery cell 10, so that the fluid can be transmitted in a directional manner, thereby reducing the influence of the fluid output by the single battery cell 10 on other battery cells 10, helping to reduce the influence range of the battery cell 10 and improve the reliability of the battery device 100.

[0057] Please refer to Figure 7 , Figure 8 and Figure 9 In some examples, the plurality of first flow guide channels 24 are arranged in a first direction 4a and extend in a second direction 4b perpendicular to the first direction 4a, and the plurality of battery cells 10 are arranged in an array in the first direction 4a and the second direction 4b, the number of the plurality of first flow guide channels 24 is the same as the number of rows of the plurality of battery cells 10 in the first direction 4a, and each row of battery cells 10 corresponds to a first flow guide channel 24.

[0058] The first direction 4a and the second direction 4b are arranged perpendicularly, the first direction 4a can be the length direction of the support plate 21, and the second direction 4b can be the width direction of the support plate 21.

[0059] The plurality of first flow guide channels 24 are arranged in the first direction 4a, so that the plurality of first flow guide channels 24 can be distributed in the length direction of the support plate 21, and when the plurality of battery cells 10 are distributed in the first direction 4a, the plurality of first flow guide channels 24 can correspond to the plurality of battery cells 10 arranged in the first direction 4a respectively. The first flow guide channel 24 has a length direction, the length direction of the first flow guide channel 24 extends in the second direction 4b, and the plurality of battery cells 10 are arranged in an array in the first direction 4a and the second direction 4b, so that the plurality of battery cells 10 can correspond to the positions of the first flow guide channels 24 extending in the second direction 4b. In the example, the number of first flow guide channels 24 is the same as the number of rows of battery cells 10, so that each row of battery cells 10 can correspond to a first flow guide channel 24, and when any battery cell 10 outputs fluid through the pressure relief port 11, there is a first flow guide channel 24 corresponding to the position of the pressure relief port 11, so that the fluid output by the battery cell 10 can be output to the first flow guide channel 24. In the example, the first flow guide channel 24 can be used to guide the fluid output by the battery cell 10 to a preset direction, so that when the battery cell 10 releases pressure, the influence of the battery cell 10 on other rows of battery cells 10 is reduced, and the problem of thermal runaway caused by the mutual influence between battery cells 10 is reduced.

[0060] Please refer to Figure 3In some examples, each battery cell 10 includes two main surfaces 12 arranged opposite to each other, the battery cell 10 has a first dimension 3a in a direction of spacing between the two main surfaces 12 and a second dimension 3b in a direction perpendicular to the direction of spacing and parallel to the support plate 21, the first dimension 3a is smaller than the second dimension 3b, and the direction of spacing of the two main surfaces 12 is arranged parallel to the first direction 4a.

[0061] The first dimension 3a can be a dimension in a thickness direction of the battery cell 10, and the second dimension 3b can be a dimension in a length direction of the battery cell 10. The main surface 12 can be one surface of the battery cell 10 in the thickness direction. The first dimension 3a is smaller than the second dimension 3b, and the direction of spacing of the two main surfaces 12 is arranged parallel to the first direction 4a, so that the battery cell 10 corresponds to the position of the first flow channel 24, and when the pressure relief port 11 of a certain row of battery cells 10 is opened, the influence of the battery cell 10 on other rows of battery cells 10 can be reduced, and the problem of thermal runaway caused by mutual influence between the batteries can be reduced.

[0062] For reference, please see Figure 4 , Figure 6 and Figure 9 In some examples, the plurality of first flow channels 24 are arranged spaced apart along the first direction 4a and extend along a second direction 4b perpendicular to the first direction 4a, the bottom support structure 20 further comprises a discharge port 221 and a second flow channel 25 between the support plate 21 and the bottom plate 22, the second flow channel 25 is arranged on at least one side of the plurality of first flow channels 24 in the second direction 4b and extends along the first direction 4a, and the plurality of first flow channels 24 are respectively connected to the discharge port 221 through the second flow channel 25.

[0063] The plurality of first flow channels 24 are arranged spaced apart along the first direction 4a, so that the plurality of first flow channels 24 can be distributed spaced apart along the length direction of the support plate 21, and when the plurality of battery cells 10 are arranged along the first direction 4a, the plurality of first flow channels 24 can correspond to the plurality of battery cells 10 arranged along the first direction 4a. The first flow channel 24 has a length direction, the length direction of the first flow channel 24 extends along the second direction 4b, and the plurality of battery cells 10 are arranged in an array along the first direction 4a and the second direction 4b, so that the plurality of battery cells 10 can correspond to the position of the first flow channel 24 extending along the second direction 4b. In the present example, the number of rows of the first flow channel 24 and the battery cell 10 along the first direction 4a is the same, so that each row of battery cells 10 can correspond to a first flow channel 24, and when the pressure relief port 11 of any row of battery cells 10 outputs fluid, there is a first flow channel 24 corresponding to the position of the pressure relief port 11, so that the fluid output by the battery cell 10 can be output to the first flow channel 24.

[0064] The discharge port 221 can be used for pressure relief. The second flow channel 25 is located between the support plate 21 and the bottom plate 22, and the second flow channel 25 can be used to connect the discharge port 221 and the first flow channel 24, so that the fluid in the first flow channel 24 can flow along the second flow channel 25 to the discharge port 221. In the present example, the number of second flow channels 25 can be one. The number of second flow channels 25 can be two; alternatively, the two second flow channels 25 can be symmetrically arranged on both sides of the first flow channel 24 along the second direction 4b. The discharge port 221 can be connected between the bottom plate 22 and the support plate 21 and connected to the second flow channel 25; alternatively, the discharge port 221 can also be arranged on the bottom plate 22 or the support plate 21.

[0065] The second flow channel 25 is arranged on at least one side of the first flow channel 24 along the second direction 4b, and the second flow channel 25 in the present example can be used to connect multiple first flow channels 24 to form a channel for guiding fluid in a predetermined direction. The second flow channel 25 can be used for confluence to reduce the number of discharge ports 221 on the bottom support structure 20, which helps to reduce the structural complexity of the bottom support structure 20 and reduce costs.

[0066] In some examples, the plurality of first flow channels 24 are isolated from each other, and the bottom support structure 20 further comprises a plurality of discharge ports 221 respectively connected to the plurality of first flow channels 24.

[0067] The discharge port 221 can be used to discharge the fluid in the first flow channel 24 to the outside of the bottom support structure 20. In the present example, one discharge port 221 can be arranged for each first flow channel 24, so that the fluid in the first flow channel 24 can be output from the discharge port 221. Since the fluid in the first flow channel 24 can be output from the discharge port 221, and the plurality of first flow channels 24 are arranged to be isolated from each other, the fluid output from any first flow channel 24 can be discharged separately, which can facilitate the isolation of adjacent first flow channels 24 from each other, thereby reducing the mutual influence of adjacent battery cells 10 and improving the reliability of the battery device 100.

[0068] In some examples, the discharge port 221 is arranged on the bottom plate 22. In the present example, the bottom plate 22 is arranged on the side of the support plate 21 away from the battery cell 10. When the discharge port 221 is arranged on the bottom plate 22, the fluid can be discharged from the side away from the battery cell 10, thereby reducing the influence of the fluid on the battery cell 10 during the exhaust process.

[0069] In some examples, the plurality of partitions 23 are integrally formed with the support plate 21. In this example, the support plate 21 and the plurality of partitions 23 can be formed by the same process, which can effectively simplify the manufacturing process of the support plate 21 and the plurality of partitions 23.

[0070] In some examples, the plurality of first flow guide channels 24 are arranged at intervals along the first direction 4a and extend along a second direction 4b perpendicular to the first direction 4a, and the support plate 21 comprises at least two sub-support plates 213 that are spliced together along the first direction 4a, and each sub-support plate 213 is provided with at least two first flow guide channels 24.

[0071] In this example, the first flow guide channels 24 extend along the second direction 4b, and the number of sub-support plates 213 is a plurality, and the plurality of sub-support plates 213 are spliced together along the first direction 4a, and the first flow guide channels 24 in each sub-support plate 213 can remain intact, and the corresponding first flow guide channels 24 can be formed on the corresponding sub-support plate 213 during the forming process of the sub-support plate 213; when the plurality of sub-support plates 213 are spliced together, on the one hand, the first flow guide channels 24 on the plurality of sub-support plates 213 do not affect each other, and on the other hand, it is helpful to simplify the splicing process of the plurality of sub-support plates 213. Since each sub-support plate 213 is provided with at least two first flow guide channels 24, each sub-support plate 213 can be used to support a battery cell 10, thereby helping to improve the space utilization rate of the sub-support plate 213.

[0072] In some examples, the bottom plate 22 can be a whole plate structure. In some examples, the bottom plate 22 can also be formed by splicing a plurality of sub-structures, and the plurality of sub-structures can be arranged one-to-one with the plurality of sub-support plates 213.

[0073] In some examples, each sub-support plate 213 has a splicing edge 214 for splicing other sub-support plates 213, and a baffle 212 is arranged along the splicing edge 214, and the baffles 212 on the splicing edges 214 of the adjacent two sub-support plates 213 contact each other.

[0074] The splicing edge 214 can be an edge part of the sub-support plate 213 along the first direction 4a, and the splicing edges 214 of adjacent sub-support plates 213 are spliced together. The splicing edge 214 is provided with a baffle 212, which can be a protruding structure at the splicing edge 214 of the sub-support plate 213. When the sub-support plates 213 are spliced together, the baffles 212 can be used to position the adjacent sub-support plates 213, and can also be used to increase the contact area of the splicing edges 214 of the adjacent sub-support plates 213, thereby improving the splicing strength of the adjacent sub-support plates 213.

[0075] In some examples, the thickness of the baffle 212 along the first direction 4a at the spliced edge 214 of the sub- support plate 213 is less than the thickness of the baffle 212 along the first direction 4a at other positions outside the spliced edge 214. By defining the baffles 212 at different positions to have different thicknesses in the present example, the space occupied by the baffle 212 along the first direction 4a at the spliced edge 214 of the sub- support plate 213 can be relatively small, thereby improving the space utilization, and the thickness of the baffle 212 at the region outside the spliced edge 214 is relatively large to improve the structural strength of the sub- support plate 213.

[0076] Referring to Figure 2 On the basis of the above-mentioned bottom support structure 20, the present application further proposes an example of a battery device 100, which comprises the bottom support structure 20 as described in any of the above-mentioned examples and a plurality of battery monomers 10 supported on the support plate 21.

[0077] The battery monomers 10 can be arranged in a matrix on the bottom support structure 20. The plurality of battery monomers 10 can be arranged in series, in parallel, or in series-parallel mixed connection with each other.

[0078] In some examples, the battery device 100 further comprises a box 30, which can be used to accommodate the plurality of battery monomers 10. The box 30 can comprise a first shell 31 and a second shell 32, which are combined to form the hollow box 30. The bottom support structure 20 can be arranged on the second shell 32 of the box 30, and the battery monomers 10 can be placed above the bottom support structure 20.

[0079] By arranging the above-mentioned bottom support structure 20 in the battery device 100 in the present example, the fluid output by the battery monomers 10 can be conveniently guided in a predetermined direction, which can facilitate the control of the propagation direction of the fluid in the box 30 of the battery device 100, and can facilitate the control of the influence range of the fluid on the battery monomers 10, so as to reduce the influence of the fluid output by the local battery monomers 10 on the surrounding battery monomers 10, thereby improving the reliability of the battery device 100.

[0080] Referring to Figure 1 The present application further proposes an example of an electric equipment 1000, which comprises the battery device 100 as described in any of the above-mentioned examples.

[0081] The battery device 100 can be used as a power source of the electrical equipment 1000, and the battery device 100 can also be used to supply power to electrical components on the electrical equipment 1000. Taking the electrical equipment 1000 as a vehicle as an example, the host can include a driving device 200 and a control device 300, wherein the driving device 200 and the control device 300 can be electrically connected with the battery respectively, the driving device 200 can be a motor, and the control device 300 can be a controller or a control system.

[0082] Please refer to Figures 1 to 9 In the examples of the present application, an example of a bottom support structure 20 that can be used in a battery device 100 is provided. The battery device 100 can have a plurality of battery monomers 10, and the bottom support structure 20 can be used to support the battery monomers 10. The bottom support structure 20 can include a support plate 21, a bottom plate 22, and a plurality of partition plates 23. The support plate 21 is used to support the plurality of battery monomers 10 and is provided with a plurality of flow guide holes 211 corresponding to the pressure relief ports 11 of the plurality of battery monomers 10 respectively. The bottom plate 22 is arranged on the side of the support plate 21 away from the plurality of battery monomers 10. The plurality of partition plates 23 are arranged side by side between the support plate 21 and the bottom plate 22 and cooperate with the support plate 21 and the bottom plate 22 to form a plurality of first flow guide channels 24. Each first flow guide channel 24 is connected to the pressure relief port 11 of the battery monomer 10 through the corresponding flow guide hole 211. In the example, the flow guide holes 211 on the support plate 21 correspond to the pressure relief ports 11 of the battery monomers 10, and at the same time, the plurality of flow guide holes 211 can respectively communicate with the plurality of first flow guide channels 24, so that the fluid released by the battery monomers 10 can be directed to the corresponding first flow guide channels 24 through the corresponding flow guide holes 211, so that the heat can be directed and output, reducing the influence on other battery monomers 10, thereby helping to improve the reliability of the battery monomers 10. Optionally, the plurality of first flow guide channels 24 can be arranged in a spaced manner along a first direction 4a, and the first flow guide channels 24 extend along a second direction 4b. The plurality of battery monomers 10 are arranged in a matrix along the first direction 4a and the second direction 4b, so that the plurality of battery monomers 10 can correspond to the plurality of first flow guide channels 24 respectively. When the fluid output by one of the battery monomers 10 enters the corresponding first flow guide channel 24, the first flow guide channel 24 can guide and direct the fluid output by the battery monomer 10 to reduce the influence of the battery monomer 10 on other battery monomers 10, thereby improving the reliability of the battery device 100. Optionally, the bottom plate 22 in the example can also be provided with a discharge port 221, which can be connected to the plurality of first flow guide channels 24 through a second flow guide channel 25, so that the fluid in the plurality of first flow guide channels 24 can flow along the second flow guide channel 25 to the discharge port 221 and be output through the discharge port 221.

[0083] The above merely describes the embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which is made by using the content of the present application specification and drawings, is also included in the patent protection scope of the present application.

Claims

1. A foundation structure, characterized by The bottom support structure comprises: a support plate for supporting a plurality of battery cells and provided with a plurality of flow guide holes corresponding to pressure relief openings of the plurality of battery cells respectively; a bottom plate provided on a side of the support plate away from the plurality of battery cells; a plurality of partition plates provided side by side between the support plate and the bottom plate and cooperating with the support plate and the bottom plate to form a plurality of first flow guide channels, each of the first flow guide channels being communicated with the pressure relief openings of the battery cells through a corresponding flow guide hole.

2. The frame structure of claim 1, wherein The plurality of first flow guide channels are arranged in a first direction and extend in a second direction perpendicular to the first direction, and the plurality of battery cells are arranged in the first direction and the second direction, the number of the plurality of first flow guide channels being the same as the number of rows of the plurality of battery cells in the first direction, and each row of the battery cells corresponds to one of the first flow guide channels.

3. The frame structure of claim 2, wherein Each of the battery cells comprises two main surfaces arranged away from each other, the battery cell has a first dimension in a direction of separation of the two main surfaces and a second dimension in a direction perpendicular to the direction of separation and parallel to the support plate, the first dimension being smaller than the second dimension, and the direction of separation of the two main surfaces is arranged in parallel to the first direction.

4. The frame structure of claim 1 wherein, The plurality of first flow guide channels are arranged in a first direction and extend in a second direction perpendicular to the first direction, and the bottom support structure is further provided with a discharge port and a second flow guide channel between the support plate and the bottom plate, the second flow guide channel being arranged on at least one side of the plurality of first flow guide channels in the second direction and extending in the first direction, and the plurality of first flow guide channels are communicated with the discharge port through the second flow guide channel.

5. The frame structure of claim 1 wherein, The plurality of first flow guide channels are isolated from each other, and the bottom support structure is further provided with a plurality of discharge ports communicated with the plurality of first flow guide channels respectively.

6. The frame structure of claim 4 or 5, wherein The discharge ports are arranged on the bottom plate.

7. The frame structure of claim 1 wherein, The plurality of partition plates are integrally formed with the support plate.

8. The frame structure of claim 7, wherein The plurality of first flow guide channels are arranged in a first direction and extend in a second direction perpendicular to the first direction, and the support plate comprises at least two sub-support plates spliced with each other in the first direction, and each of the sub-support plates is provided with at least two first flow guide channels.

9. The frame structure of claim 8, wherein Each of the sub-support plates has a splicing edge for splicing with other sub-support plates, and a baffle is arranged along the splicing edge, and the baffles on the splicing edges of two adjacent sub-support plates contact each other.

10. The frame structure of claim 9, wherein The thickness of the baffles on the splicing edges of the sub-support plates in the first direction is smaller than the thickness of the baffles at other positions except the splicing edges in the first direction.

11. A battery device characterized by comprising: The battery device comprises the bottom support structure according to any one of claims 1-10 and a plurality of battery cells supported on the support plate.

12. An electrical device, characterized by The power utilization equipment comprises the battery device according to claim 11.

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