Battery apparatus and electric device

Abstract

Disclosed in embodiments of the present application are a battery apparatus and an electric device. The battery apparatus comprises: a case for accommodating battery cells, wherein a beam is provided in the case; a thermal management component provided in the case and used for regulating the temperature of the battery cells, wherein the thermal management component comprises a flow guide tube, and the flow guide tube is used for injecting fluid into or discharging fluid from the interior of the thermal management component; and a fixed member, wherein the flow guide tube passes through the fixed member and is fixed to the fixed member, and the fixed member is fixed to the beam. The battery apparatus and the electric device in the embodiments of the present application can improve the reliability and stability of the battery apparatus.

Description

Battery device and electric appliance

[0001] This application claims priority to Chinese Patent Application No. 202411116547.8, filed on August 14, 2024, entitled “Battery device and electric appliance”, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the field of batteries, and more particularly, to a battery device and an electric appliance. BACKGROUND

[0003] Energy saving and emission reduction is the key to the sustainable development of the automobile industry. In this case, electric vehicles have become an important part of the sustainable development of the automobile industry due to their energy-saving and environmentally friendly advantages. For electric vehicles, battery technology is an important factor for their development.

[0004] In the development of battery technology, in addition to improving the performance of the battery, safety is also an issue that cannot be ignored. If the safety of the battery cannot be guaranteed, the battery cannot be used. Therefore, how to enhance the safety and reliability of the battery is a technical problem that needs to be solved in the field of battery technology. SUMMARY

[0005] The embodiments of the present application provide a battery device and an electric appliance, which can improve the reliability and stability of the battery.

[0006] In a first aspect, a battery device is provided, comprising: a box body configured to accommodate a battery monomer, the box body being provided with a beam; a heat management component disposed in the box body and configured to adjust the temperature of the battery monomer, the heat management component comprising a flow guide pipe configured to inject or discharge a fluid inside the heat management component; and a fixing member, the flow guide pipe penetrating through the fixing member and being fixed with the fixing member, the fixing member being fixed with the beam.

[0007] Therefore, the battery device of the embodiments of the present application can realize the relative fixation of the flow guide pipe and the beam in the box body through the fixing member, improve the stability of the flow guide pipe during the use of the battery, reduce the risk of loosening of the flow guide pipe, and further reduce the risk of leakage of the fluid inside the heat management component, so as to improve the reliability and stability of the battery device.

[0008] In some embodiments, the flow guide pipe penetrates through the fixing member along the thickness direction of the fixing member, and one side of the fixing member perpendicular to the thickness direction of the fixing member is provided with a stepped structure, so as to reduce the deformation of the fixing member through the stepped structure, increase the structural strength and stability of the fixing member, and further improve the stability of the flow guide pipe.

[0009] In some embodiments, the beam comprises a first beam and a second beam arranged in different directions and intersecting with each other, and the fixing member is fixed with the first beam and the second beam respectively to improve the stability between the fixing member and the beam.

[0010] In some embodiments, the fixing member comprises a first fixing part and a second fixing part, the first fixing part is fixed with the first beam through a first connecting part penetrating through the first fixing part and fixed with the first beam, and the second fixing part is fixed with the second beam through a second connecting part penetrating through the second fixing part and fixed with the second beam, which is simple and stable in structure and convenient to install.

[0011] In some embodiments, the first fixing part and / or the second fixing part are provided with reinforcing ribs to strengthen the structural strength of the fixing member and increase the connection stability between the fixing member and the first beam and between the fixing member and the second beam.

[0012] In some embodiments, the box comprises a first box part which is a hollow structure with an opening, the beam is located in the first box part, and the first box part is provided with the heat management component; and a second box part for covering the opening, and the fixing member is fixed with the second box part. The fixing member can fix the flow guide pipe with the beam in the first box part of the box and also fix the flow guide pipe with the second box part of the box, further improving the stability of the flow guide pipe, reducing the risk of loosening of the flow guide pipe, and further reducing the risk of leakage of the fluid inside the heat management component, so as to improve the reliability and stability of the battery device.

[0013] In some embodiments, the second box part comprises an opening area, and the flow guide pipe penetrates through the opening area to expose the flow guide pipe, so that the flow guide pipe extends to the outside of the box, facilitating the injection or discharge of the fluid inside the heat management component through the flow guide pipe.

[0014] In some embodiments, the fixing member is fixed with a first wall of the second box part, and the first wall is perpendicular to the height direction of the box to improve the structural stability between the fixing member and the box.

[0015] In some embodiments, a sealing member is arranged between the fixing member and the second box part to improve the sealing property between the fixing member and the second box part.

[0016] In some embodiments, the fixing member is provided with a groove with an opening facing the second box part, and the groove is used to accommodate the sealing member to facilitate the positioning and installation of the sealing member, and also can reduce the space occupied by the sealing member inside the box to improve the space utilization of the box.

[0017] In some embodiments, the fixing member comprises a third fixing part fixed with the second box part through a third connecting part penetrating through the second box part and fixed with the third fixing part, which is simple in structure and easy to implement, and can improve the connection strength and stability between the fixing member and the second box part through the third connecting part.

[0018] In some embodiments, the side of the third fixing part away from the second box part is provided with a protruding structure protruding away from the second box part to increase the thickness of the third fixing part, improve the structural strength, and improve the connection strength and stability between the fixing member and the second box part.

[0019] In some embodiments, the fixing member is a die-cast structure, which is easy to process and can improve the structural strength of the fixing member and thus the stability of the flow guide pipe.

[0020] In some embodiments, the fixing member is provided with a through hole through which the flow guide pipe penetrates the fixing member, and the depth of the through hole is in the range of [2mm, 9mm], and optionally, the depth of the through hole is in the range of [4mm, 9mm]. On the one hand, the depth of the through hole is greater than or equal to 2mm, or further, greater than or equal to 4mm, which can improve the structural strength and stability of the fixing member and thus the stability of the flow guide pipe and the battery device. On the other hand, the depth of the through hole is less than or equal to 9mm, which can reduce the space occupied by the fixing member and improve the internal space utilization of the battery device.

[0021] In some embodiments, the battery device is used to power the electric device.

[0022] In some embodiments, the electric device is a vehicle, a ship or a spacecraft. BRIEF DESCRIPTION OF DRAWINGS

[0023] FIG. 1 is a schematic view of a vehicle according to an embodiment of the present application;

[0024] FIG. 2 is a schematic view of a battery device according to an embodiment of the present application;

[0025] FIG. 3 is a schematic view of a partial structure of a battery device according to an embodiment of the present application;

[0026] FIG. 4 is an exploded view of a partial structure of a battery device according to an embodiment of the present application;

[0027] FIG. 5 is an exploded view of another partial structure of a battery device according to an embodiment of the present application;

[0028] FIG. 6 is a schematic view of a partial structure of a battery device according to an embodiment of the present application;

[0029] Fig. 7 is a schematic view of another partial structure of a battery device according to an embodiment of the present application;

[0030] Fig. 8 is a schematic view of a structure of a fixing member according to an embodiment of the present application;

[0031] Fig. 9 is a schematic view of another structure of a fixing member according to an embodiment of the present application;

[0032] Fig. 10 is a schematic view of an exploded structure of a case according to an embodiment of the present application;

[0033] Fig. 11 is a schematic view of a cross section of a battery device according to an embodiment of the present application;

[0034] Fig. 12 is a schematic view of a cross section of a battery device according to another embodiment of the present application;

[0035] Fig. 13 is a schematic view of an exploded structure of a case according to another embodiment of the present application;

[0036] Fig. 14 is a schematic view of a cross section of a battery device according to still another embodiment of the present application.

[0037] In the drawings, the drawings are not drawn according to the actual scale.

[0038] Reference signs: 1 - vehicle; 10 - battery device; 11 - case; 11a - electric cavity; 11b - collection cavity; 111 - first case portion; 1111 - protection member; 112 - second case portion; 1121 - opening region; 1122 - first wall; 113 - beam; 1131 - first beam; 1132 - second beam; 12 - heat management member; 121 - flow guide pipe; 1211 - riveting block; 13 - fixing member; 131 - first fixing portion; 1311 - reinforcing rib; 132 - second fixing portion; 133 - third fixing portion; 1331 - protruding structure; 134 - step structure; 135 - sealing member; 136 - groove; 137 - through hole; 141 - first connecting member; 142 - second connecting member; 143 - third connecting member; 15 - bus member; 20 - battery cell; 201 - electrode terminal; 30 - controller; 40 - motor. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be described below with reference to the drawings.

[0040] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0041] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used in the present application are only for the purpose of describing the specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the description of the present application and the claims and the above description of drawings are intended to cover the non-exclusive inclusion. The terms "first", "second" and the like in the description of the present application and the claims or the above description of drawings are used to distinguish different objects, not to describe a particular order or primary and secondary relationship.

[0042] In the present application, the phrase "embodiments" means that the specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears at various places in the specification does not necessarily refer to the same embodiments, nor is it necessarily mutually exclusive or alternative embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in the present application can be combined with other embodiments.

[0043] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection", "attach" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium; can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] In the present application, the term "and / or" is only a description of the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in the present application generally represents an "or" relationship between the front and rear associated objects.

[0045] In the embodiments of the present application, the same reference signs represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are only exemplary and should not constitute any limitation on the present application.

[0046] In the present application, "a plurality of" refers to more than two (including two), and similarly, "a plurality of groups" refers to more than two groups (including two groups), and "a plurality of pieces" refers to more than two pieces (including two pieces).

[0047] In the embodiments of the present application, the battery cell can be a secondary battery, which refers to a battery cell that can be activated by charging after discharging.

[0048] The battery cell can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel-hydrogen battery, a nickel-cadmium battery, a lead-acid battery, etc. The embodiments of the present application are not limited in this regard.

[0049] In some implementations, the battery cell in the embodiments of the present application can be a metal battery, specifically, the metal battery can include a lithium metal secondary battery, a sodium metal battery, or a magnesium metal battery, etc. The embodiments of the present application are not limited in this regard.

[0050] The battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charging and discharging process of the battery cell, active ions (such as lithium ions) are inserted and extracted between the positive electrode and the negative electrode. The separator is arranged between the positive electrode and the negative electrode, which can prevent the positive and negative electrodes from short-circuiting, and at the same time, allow the active ions to pass through.

[0051] In some embodiments, the positive electrode can be a positive electrode sheet, which can include a positive electrode current collector and a positive electrode active material arranged on at least one surface of the positive electrode current collector.

[0052] As an example, the positive electrode current collector has two opposite surfaces in the thickness direction of itself, and the positive electrode active material is arranged on any one or both of the two opposite surfaces of the positive electrode current collector.

[0053] As an example, the positive electrode current collector can employ a metal foil, a foam metal, or a composite current collector. For example, as a metal foil, silver surface-treated aluminum or stainless steel, stainless steel, copper, aluminum, nickel, a carbon electrode, carbon, nickel, or titanium, or the like can be employed. The foam metal can be a foam nickel, a foam copper, a foam aluminum, a foam alloy, or a foam carbon, or the like. The composite current collector can include a polymer material base layer and a metal layer. The composite current collector can be formed by forming a metal material (aluminum, an aluminum alloy, nickel, a nickel alloy, titanium, a titanium alloy, silver, and a silver alloy, or the like) on a polymer material base material (a base material of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, or the like).

[0054] As an example, the positive electrode active material can include at least one of a lithium-containing phosphate, a lithium transition metal oxide, and a modified compound of each thereof. However, the present application is not limited to these materials, and other conventional materials that can be used as a battery positive electrode active material can also be used. These positive electrode active materials can be used alone only one or two or more can be used in combination. Among them, examples of the lithium-containing phosphate can include, but are not limited to, at least one of lithium iron phosphate (such as LiFeP04 (which can also be referred to as LFP)), a composite material of lithium iron phosphate and carbon, lithium manganese phosphate (such as LiMnP04), a composite material of lithium manganese phosphate and carbon, lithium manganese iron phosphate, and a composite material of lithium manganese iron phosphate and carbon.

[0055] In some embodiments, the negative electrode can be a negative electrode sheet, which can include a negative electrode current collector and a negative electrode active material disposed on at least one surface of the negative electrode current collector.

[0056] As an example, the negative electrode current collector has two surfaces opposite in the thickness direction thereof, and the negative electrode active material is disposed on either one or both of the two opposite surfaces of the negative electrode current collector.

[0057] As an example, the negative electrode current collector can employ a metal foil, a foam metal, or a composite current collector. For example, as a metal foil, silver surface-treated aluminum or stainless steel, stainless steel, copper, aluminum, nickel, a carbon electrode, carbon, nickel, or titanium, or the like can be employed. The foam metal can be a foam nickel, a foam copper, a foam aluminum, a foam alloy, or a foam carbon, or the like. The composite current collector can include a polymer material base layer and a metal layer. The composite current collector can be formed by forming a metal material (copper, a copper alloy, nickel, a nickel alloy, titanium, a titanium alloy, silver, and a silver alloy, or the like) on a polymer material base material (a base material of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, or the like).

[0058] In some embodiments, the electrode assembly further includes a separator disposed between the positive electrode and the negative electrode.

[0059] In some embodiments, the separator is a separator film. The type of separator film is not particularly limited in the present application, and any known porous structure separator film having good chemical stability and mechanical stability can be used.

[0060] As an example, the main material of the separator film can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, and polyvinylidene fluoride, and ceramic.

[0061] In some embodiments, the separator is a solid-state electrolyte. The solid-state electrolyte is disposed between the positive electrode and the negative electrode, and functions to transport ions and separate the positive electrode and the negative electrode.

[0062] In some embodiments, the battery cell further includes an electrolyte, which functions to conduct ions between the positive electrode and the negative electrode. The type of electrolyte is not particularly limited in the present application, and can be selected as needed. The electrolyte can be in a liquid state, a gel state, or a solid state.

[0063] In some embodiments, the electrode assembly is provided with a tab, which can lead current out of the electrode assembly. The tab includes a positive tab and a negative tab.

[0064] In some embodiments, the battery cell can include a housing. The housing is used to package components such as the electrode assembly and the electrolyte. The housing can be a steel shell, an aluminum shell, a plastic shell (such as polypropylene), a composite metal shell (such as a copper-aluminum composite shell), or an aluminum-plastic film, etc. The housing includes a shell body and an end cover.

[0065] The battery device mentioned in the embodiments of the present application can include one or more battery cells to provide a single physical module with higher voltage and capacity. When there are multiple battery cells, the multiple battery cells are connected in series, in parallel, or in a mixed connection through a busbar.

[0066] In some embodiments, the battery device can be a battery pack, which includes a box body and battery cells or battery modules housed in the box body.

[0067] In some embodiments, the box body can be part of the chassis structure of a vehicle. For example, part of the box body can be at least part of the floor of the vehicle, or part of the box body can be at least part of the cross beam and the longitudinal beam of the vehicle.

[0068] In some embodiments, the battery device can be located in an energy storage device. The energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0069] The development of battery device technology needs to consider various design factors, such as performance parameters such as energy density, cycle life, discharge capacity, and charge / discharge rate, and the safety of the battery device. For a battery device, the temperature of the battery device changes greatly during charging and discharging, and therefore a thermal management component can be provided in the battery device to regulate the temperature of the battery device. Specifically, the thermal management component contains a fluid inside to regulate the temperature of the battery monomer, and the thermal management component can include a flow guide pipe for injecting or discharging the internal fluid. If there is no fixing structure between the flow guide pipe and the box of the battery device, or only an insulating cable is used to bind, the flow guide pipe is unstable and can easily come loose during use of the battery device, which can cause the internal fluid of the thermal management component to leak and affect the reliability and stability of the battery device.

[0070] Therefore, the embodiments of the present application provide a battery device and a power consumption equipment, which can solve the above problems. The battery device provided by the embodiments of the present application comprises a box for accommodating battery monomers, and a beam is arranged in the box. The battery device further comprises a thermal management component for regulating the temperature of the battery monomers in the box, and the thermal management component comprises a flow guide pipe for injecting or discharging a fluid inside the thermal management component. The battery device further comprises a fixing member, the flow guide pipe penetrates through the fixing member and is fixed with the fixing member, and the fixing member is fixed with the beam. The relative fixation of the flow guide pipe and the beam of the box is achieved by the fixing member, the stability of the flow guide pipe during use of the battery device is improved, the risk of loosening of the flow guide pipe is reduced, and the risk of leakage of the internal fluid of the thermal management component is reduced, thereby improving the reliability and stability of the battery device.

[0071] The technical solutions described in the embodiments of the present application are applicable to various power consumption equipment using battery devices.

[0072] The power consumption equipment can be a vehicle, a mobile phone, a portable device, a notebook computer, a ship, a spacecraft, an electric toy, and an electric tool, etc. The vehicle can be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile, or a range extended automobile, etc. The spacecraft includes an airplane, a rocket, a space shuttle, and a spacecraft, etc. The electric toy includes a fixed or mobile electric toy, such as a game console, an electric automobile toy, an electric ship toy, and an electric airplane toy, etc. The electric tool includes a metal cutting electric tool, a grinding electric tool, an assembling electric tool, and a railway electric tool, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact electric drill, a concrete vibrator, and an electric planer, etc. The embodiments of the present application do not specially limit the above power consumption equipment.

[0073] The following embodiments take the vehicle as an example for convenience of description.

[0074] For example, as shown in FIG. 1, which is a structural schematic diagram of a vehicle 1 according to an embodiment of the present application, the vehicle 1 can be a fuel vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle, or a range extended vehicle. The vehicle 1 can be provided with a motor 40, a controller 30, and a battery device 10, and the controller 30 is used to control the battery device 10 to supply power to the motor 40. For example, the battery device 10 can be arranged at the bottom, the front, or the rear of the vehicle 1. The battery device 10 can be used to supply power to the vehicle 1, for example, the battery device 10 can be used as an operating power source of the vehicle 1, and can be used for the circuit system of the vehicle 1, for example, for the power demand of the vehicle 1 during starting, navigation, and operation. In another embodiment of the present application, the battery device 10 can not only be used as an operating power source of the vehicle 1, but also be used as a driving power source of the vehicle 1, to replace or partially replace fuel or natural gas to provide driving power for the vehicle 1.

[0075] In order to meet different power demands, the battery device can include a plurality of battery monomers, and the plurality of battery monomers can be connected in series, in parallel, or in a mixed connection. The mixed connection refers to a mixture of series connection and parallel connection. The battery device can also be referred to as a battery pack. For example, the plurality of battery monomers can be connected in series, in parallel, or in a mixed connection to form a battery module, and the plurality of battery modules can be connected in series, in parallel, or in a mixed connection to form the battery device. That is, the plurality of battery monomers can be directly connected to form the battery device, or the plurality of battery monomers can be connected to form a battery module, and the battery module can be connected to form the battery device.

[0076] FIG. 2 shows a structural schematic diagram of the battery device 10 according to an embodiment of the present application; FIG. 3 shows a partial structural schematic diagram of the battery device 10 according to an embodiment of the present application, for example, FIG. 3 can be an enlarged schematic diagram of region A in FIG. 2; FIG. 4 shows an exploded schematic diagram of a partial structure of the battery device 10 according to an embodiment of the present application, for example, FIG. 4 can be an exploded schematic diagram of a partial structure of the battery device 10 shown in FIG. 2; FIG. 5 shows an exploded schematic diagram of a partial structure of the battery device 10 according to an embodiment of the present application, for example, FIG. 5 can be an enlarged view of region B of the battery device 10 shown in FIG. 4; FIG. 6 shows a partial structural schematic diagram of the battery device 10 according to an embodiment of the present application, for example, FIG. 6 shows a possible internal partial structure of the box 11 of the battery device 10 at region A shown in FIG. 2; and FIG. 7 shows a partial structural schematic diagram of the battery device 10 according to an embodiment of the present application, for example, FIG. 7 can be an enlarged schematic diagram of region C shown in FIG. 6.

[0077] In the embodiments of the present application, the battery device 10 comprises a box 11, a thermal management component 12 and a fixing member 13. Specifically, as shown in FIGS. 2 to 7, the box 11 is configured to accommodate the battery monomer 20, and a beam 113 is arranged in the box 11; the thermal management component 12 is arranged in the box 11 and configured to regulate the temperature of the battery monomer 20, and the thermal management component 12 comprises a flow guide pipe 121 configured to inject or discharge fluid inside the thermal management component 12; the flow guide pipe 121 penetrates through the fixing member 13 and is fixed with the fixing member 13, and the fixing member 13 is fixed with the beam 113.

[0078] It should be understood that the box 11 in the embodiments of the present application is a hollow structure, so that a plurality of battery monomers 20 can be accommodated in the box 11. The shape of the box 11 can be set according to actual application. For example, the embodiments of the present application mainly take the box 11 in the shape of a cuboid as an example for illustration, but the embodiments of the present application are not limited thereto. In addition, for the purpose of description, three directions perpendicular to each other are defined based on the box 11, and the three directions are respectively the length direction X, the width direction Y and the height direction Z of the battery device 10.

[0079] The box 11 is provided with at least one beam 113, so as to divide the space inside the box 11 into a plurality of subspaces, and each of the subspaces is configured to accommodate at least one battery monomer 20. For example, when a plurality of beams 113 are arranged in the box 11, the extension directions of the plurality of beams 113 can be the same or different, so as to reasonably utilize the space inside the box 11 and improve the space utilization rate of the box 11.

[0080] The thermal management component 12 in the embodiments of the present application is arranged in the box 11, for example, the thermal management component 12 can be located inside the box 11, or the thermal management component 12 can be any wall of the box 11, so as to simplify the structure of the box 11, and the embodiments of the present application are not limited thereto.

[0081] The thermal management component 12 in the embodiments of the present application is configured to regulate the temperature of the battery monomer 20. Specifically, the thermal management component 12 can be configured to accommodate a thermal management medium to regulate the temperature of the battery monomer 20. In the case of cooling the battery monomer 20, the thermal management component 12 can accommodate a cooling medium to reduce the temperature of the battery monomer 20, and at this time, the thermal management component 12 can also be referred to as a cooling component, a cooling system or a cooling plate, etc. In addition, the thermal management component 12 can also be configured to heat the battery monomer 20, for example, to heat the battery monomer 20 in a cold working environment, and the embodiments of the present application are not limited thereto.

[0082] The heat management component 12 of the embodiment of the present application comprises a flow guide pipe 121 for injecting or discharging fluid inside the heat management component 12. Further, the heat management component 12 can also comprise a flow channel structure, which is a channel for circulating heat management medium, and the flow channel structure can be a flow channel pipe or a plate structure with flow channels. The heat management component 12 can comprise one or more flow guide pipes 121. For example, if the heat management component 12 comprises a plurality of flow guide pipes 121, at least one of the plurality of flow guide pipes 121 can be a water inlet connector for injecting heat management medium into the inside of the heat management component 12, for example, for injecting heat management medium into the flow channel structure. At least one of the plurality of flow guide pipes 121 can be a water outlet connector for discharging heat management medium inside the heat management component 12, for example, for discharging heat management medium in the flow channel structure. In this way, the plurality of flow guide pipes 121 cooperate to enable the heat management medium inside the heat management component 12 to circulate and flow, so as to achieve better temperature regulation effect.

[0083] The flow guide pipe 121 of the embodiment of the present application penetrates the fixing member 13 and is fixed with the fixing member 13. If the heat management component 12 comprises a plurality of flow guide pipes 121, the plurality of flow guide pipes 121 can be fixed with one or more fixing members 13. For example, as shown in FIGS. 2 to 7, taking the heat management component 12 comprising two flow guide pipes 121 as an example, the two flow guide pipes 121 can penetrate and be fixed with the same fixing member 13. Alternatively, unlike FIGS. 2 to 7, different flow guide pipes 121 comprised by the heat management component 12 can be fixed by different fixing members 13. For example, if the plurality of flow guide pipes 121 of the heat management component 12 are arranged far apart, a plurality of fixing members 13 can be provided for fixation, so as to facilitate installation.

[0084] The fixing member 13 of the embodiment of the present application can be used to fix the flow guide pipe 121, and the fixing member 13 is fixed with the beam 113, that is, the relative fixation of the flow guide pipe 121 and the beam 113 of the box body 11 can be achieved through the fixing member 13, which improves the stability of the flow guide pipe 121 during use of the battery device 10, reduces the risk of loosening of the flow guide pipe 121, and further reduces the risk of leakage of fluid inside the heat management component 12, so as to improve the reliability and stability of the battery device 10.

[0085] It should be understood that the specific structure of the fixing member 13 of the embodiment of the present application can be set according to actual application. For example, the fixing member 13 of the embodiment of the present application is a die-cast structure, which is convenient for processing and can improve the structural strength of the fixing member 13, and further improve the stability of the flow guide pipe 121. For example, the material of the fixing member 13 can be cast aluminum alloy, but the embodiment of the present application is not limited thereto.

[0086] In some embodiments, the flow guide pipe 121 penetrates the fixing member 13 along the thickness direction Z of the fixing member 13, and the fixing member 13 is provided with a stepped structure 134 on at least one side of the fixing member 13 perpendicular to the thickness direction Z of the fixing member 13, i.e., at least one side of the fixing member 13 perpendicular to the thickness direction Z of the fixing member 13 is not flat, so as to reduce the deformation of the fixing member 13 by the stepped structure 134, increase the structural strength and stability of the fixing member 13, and further improve the stability of the flow guide pipe 121. In the embodiments of the present application, the thickness direction of the fixing member 13 is taken as the height direction Z of the box body 11, but the embodiments of the present application are not limited thereto.

[0087] In some embodiments, the position of the stepped structure 134 can be set according to actual application. Specifically, as shown in FIGS. 2 to 7, the fixing member 13 has upper and lower sides perpendicular to the thickness direction Z of the fixing member 13, and the stepped structure 134 can be located on at least one of the two sides, i.e., at least one side of the fixing member 13 perpendicular to the thickness direction Z of the fixing member 13 is not flat due to the stepped structure 134. For example, the stepped structure 134 is located on the side of the fixing member 13 away from the beam 113, i.e., the stepped structure 134 can be located on the upper side of the fixing member 13 for installation and fixation. For another example, the stepped structure 134 can be located on the edge of the fixing member 13 to facilitate fixation between the fixing member 13 and the beam 113 and between the fixing member 13 and the flow guide pipe 121.

[0088] FIGS. 8 and 9 respectively show structural schematic views of the fixing member 13 of the embodiments of the present application from different angles, i.e., the fixing member 13 shown in FIGS. 8 and 9 is the same fixing member 13 from different angles, and the fixing member 13 can be the fixing member 13 included in the battery device 10 shown in FIGS. 6 to 7.

[0089] It should be understood that the flow guide pipe 121 of the embodiments of the present application penetrates the fixing member 13. For example, as shown in FIGS. 8 and 9, the fixing member 13 is provided with a through hole 137, and the flow guide pipe 121 penetrates the fixing member 13 through the through hole 137 for installation and fixation. For example, the embodiments of the present application take that the fixing member 13 includes a through hole 137 extending along the thickness direction Z of the fixing member 13, and the flow guide pipe 121 penetrates the fixing member 13 along the thickness direction Z of the fixing member 13.

[0090] In some embodiments, the flow guide pipe 121 can be riveted with the fixing member 13 through a riveting block 1211 to fix the flow guide pipe 121 along the thickness direction Z of the fixing member 13. In addition, the riveting block 1211 and the fixing member 13 can be fixed through a fastener such as a bolt to prevent the riveting block 1211 from rotating in the through hole 137, and further prevent the flow guide pipe 121 from rotating in the through hole 137.

[0091] In some embodiments, the number of through holes 137 provided on the fixing member 13 can be set according to actual application. For example, as shown in FIGS. 4 and 5, the fixing member 13 can be provided with only one through hole 137, so that all the flow guide pipes 121 of the thermal management component 12 pass through the through hole 137, so as to simplify the structure and facilitate processing. For example, the thermal management component 12 can include one or more flow guide pipes 121 passing through the same through hole 137. For another example, as shown in FIGS. 8 and 9, the fixing member 13 can be provided with a plurality of through holes 137 corresponding to the plurality of flow guide pipes 121 included in the thermal management component 12, i.e., different flow guide pipes 121 included in the thermal management component 12 correspond to pass through different through holes 137, so as to improve the structural stability, but the embodiments of the present application are not limited thereto.

[0092] In some embodiments, the size of the through hole 137 can be set according to actual application. For example, the inner diameter of the through hole 137 can be set according to the size of the flow guide pipe 121 passing through the through hole 137, so as to facilitate the fixation of the flow guide pipe 121.

[0093] For another example, the depth H of the through hole 137 can be set according to actual application. For example, as shown in FIGS. 8 and 9, the depth H of the through hole 137 is in the range of [2mm, 9mm], or alternatively, the depth H of the through hole 137 is in the range of [4mm, 9mm]. On the one hand, the depth H of the through hole 137 is greater than or equal to 2mm, or further, greater than or equal to 4mm, which can improve the structural strength and stability of the fixing member 13, and further improve the stability of the flow guide pipe 121 and the battery device 10. On the other hand, the depth H of the through hole 137 is less than or equal to 9mm, which can reduce the space occupied by the fixing member 13 and improve the space utilization rate inside the battery device 10.

[0094] In some embodiments, the depth H of the through hole 137 can also be set to any of the following values or between any two of the following values: 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm, or 9mm.

[0095] It should be understood that the fixing member 13 of the embodiments of the present application is fixed with the beam 113, and the specific structure and fixation manner can be set according to the beam 113.

[0096] In some embodiments, the beam 113 includes a first beam 1131 and a second beam 1132 arranged in different directions and intersecting with each other, and the fixing member 13 is fixed with the first beam 1131 and the second beam 1132 respectively, so as to improve the stability between the fixing member 13 and the beam 113. As shown in FIGS. 2-9, the box 11 can be provided with a plurality of beams 113 inside, so as to divide the space inside the box 11 into a plurality of subspaces, which can be used to accommodate the battery cells 20, and can also be used to accommodate other components, such as control components and detection components in the battery device 10.

[0097] As shown in FIGS. 2-9, the beam 113 inside the box 11 includes a first beam 1131 and a second beam 1132 arranged in different directions and intersecting with each other, and the fixing member 13 is fixed with the first beam 1131 and the second beam 1132 at the same time, for example, the fixing member 13 can be arranged near the region where the first beam 1131 and the second beam 1132 intersect, so as to facilitate installation.

[0098] It should be understood that the first beam 1131 and the second beam 1132 of the embodiments of the present application can be any two intersecting beams inside the box 11 of the battery device 10. For example, the first beam 1131 and the second beam 1132 can be two beams near the battery management system (BMS) inside the box 11, so that the fixing member 13 is located near the BMS. For another example, the box 11 can include a region for centrally arranging a plurality of battery cells 20, and the first beam 1131 and the second beam 1132 can also be beams near the region or can be beams for forming the region, so that the fixing member 13 is near the region where the plurality of battery cells 20 are located. Considering the problem of adjusting the battery cells 20 by the thermal management component 12, the fixing member 13 for fixing the flow guide pipe 121 is arranged near the plurality of battery cells 20, for example, the fixing member 13 can be located at the edge of the region where the plurality of battery cells 20 are located, which can facilitate the assembly of the battery device 10.

[0099] In some embodiments, the fixing member 13 includes a first fixing portion 131 and a second fixing portion 132, the first fixing portion 131 is fixed with the first beam 1131 through a first connecting member 141, and the first connecting member 141 penetrates the first fixing portion 131 and is fixed with the first beam 1131; the second fixing portion 132 is fixed with the second beam 1132 through a second connecting member 142, and the second connecting member 142 penetrates the second fixing portion 132 and is fixed with the second beam 1132, which is simple and stable in structure and facilitates installation.

[0100] In some embodiments, the first connecting member 141 and the second connecting member 142 can be arranged according to actual application. For example, the first connecting member 141 and / or the second connecting member 142 can include a bolt, a screw or a rivet. For another example, the first connecting member 141 and the second connecting member 142 can adopt the same or different components. For example, as shown in FIGS. 2-9, the first connecting member 141 and the second connecting member 142 can both be bolts, which can facilitate installation and disassembly and improve the connection stability between the fixing member 13 and the first beam 1131 and the second beam 1132.

[0101] It should be understood that the number of the first connecting member 141 and the second connecting member 142 of the embodiments of the present application can be arranged according to actual application. For example, as shown in FIGS. 2-9, one or more first connecting members 141 can be arranged between the first fixing portion 131 and the first beam 1131, and one or more second connecting members 142 can be arranged between the second fixing portion 132 and the second beam 1132, and the number of the first connecting members 141 can be the same as or different from the number of the second connecting members 142. For example, two first connecting members 141 can be arranged between the first fixing portion 131 and the first beam 1131 to improve the connection strength and stability between the first fixing portion 131 and the first beam 1131.

[0102] In some embodiments, the first fixing portion 131 and / or the second fixing portion 132 is provided with a reinforcing rib 1311 to strengthen the structural strength of the fixing member 13 and increase the connection stability between the fixing member 13 and the first beam 1131 and between the fixing member 13 and the second beam 1132. For example, as shown in FIGS. 2-9, the position and number of the reinforcing rib 1311 can be arranged according to the position of the first fixing portion 131, taking the first fixing portion 131 provided with the reinforcing rib 1311 as an example.

[0103] In some embodiments, as shown in FIGS. 2-9, the first fixing portion 131 of the fixing member 13 can be provided with a plurality of reinforcing ribs 1311 to improve the structural strength and stability between the first fixing portion 131 and the first beam 1131. For example, reinforcing ribs 1311 can be arranged on opposite sides of the first fixing portion 131 to make the stress of the first fixing portion 131 more uniform and effectively improve the structural strength of the first fixing portion 131.

[0104] In the embodiments of the present application, the height of different regions of the first beam 1131 can be the same or partially. For example, as shown in FIGS. 2-9, the first beam 1131 can be a stepped structure. Specifically, the height of the local region of the first beam 1131 covered by the fixing member 13 is generally higher, so as to increase the height of the fixing member 13, facilitate the fixing of the fixing member 13 with other components, for example, facilitate the fixing of the fixing member 13 with the wall above the box 11. The height of the region of the first beam 1131 away from the fixing member 13 is lower, so as to facilitate the avoidance of other components in the battery device 10. For example, the flow guide pipe 121 of the thermal management component 12 is generally located in the edge region inside the battery device 10, and this part of the region can also be provided with other components, for example, the joint of the busbar component 15 for realizing the electrical connection between the plurality of battery monomers 20, and the management component for controlling or monitoring the battery monomers 20 in the battery device 10, and the first beam 1131 with lower height can avoid this part of the component, so as to facilitate the installation.

[0105] In some embodiments, the first fixing portion 131 can be located close to the region of the stepped structure of the first beam 1131. For example, as shown in FIGS. 2-9, the first fixing portion 131 extends along the thickness direction Z of the fixing member 13, so as to be connected and fixed with the first beam 1131. The first fixing portion 131 is provided with a reinforcing rib 1311, so as to improve the structural strength of the first fixing portion 131.

[0106] It should be understood that the fixing member 13 of the embodiments of the present application can also be fixed with other components of the box 11.

[0107] In the embodiments of the present application, the box 11 comprises: a first box portion 111, the first box portion 111 is a hollow structure with an opening, the beam 113 is located in the first box portion 111, and the first box portion 111 is provided with the thermal management component 12; a second box portion 112 for covering the opening, and the fixing member 13 is fixed with the second box portion 112. The fixing member 13 can fix the flow guide pipe 121 with the beam 113 in the first box portion 111 of the box 11, and also fix the flow guide pipe 121 with the second box portion 112 of the box 11, further improve the stability of the flow guide pipe 121, reduce the risk of loosening of the flow guide pipe 121, and further reduce the risk of leakage of the fluid in the thermal management component 12, so as to improve the reliability and stability of the battery device 10.

[0108] In some embodiments, the second box portion 112 comprises an opening region 1121, and the flow guide pipe 121 penetrates the opening region 1121 to expose the flow guide pipe 121. As shown in FIGS. 2-9, the fixing member 13 is fixed with the flow guide pipe 121 and the beam 113, and when the second box portion 112 covers the opening of the first box portion 111, the flow guide pipe 121 can be exposed through the opening region 1121 of the second box portion 112, so that the flow guide pipe 121 extends to the outside of the box 11, facilitating the injection or discharge of the fluid in the heat management component 12 through the flow guide pipe 121. Further, taking the example that the flow guide pipe 121 is fixed with the fixing member 13 through the riveting block 1211, the opening region 1121 of the second box portion 112 can expose the flow guide pipe 121, and further expose the riveting block 1211, so as to reduce the space occupied by the riveting block 1211 in the box 11.

[0109] In some embodiments, the fixing member 13 is fixed with the first wall 1122 of the second box portion 112, and the first wall 1122 is perpendicular to the height direction Z of the box 11. It should be understood that the structure of the second box portion 112 in the embodiments of the present application can be set according to actual application. Among them, the first wall 1122 is perpendicular to the height direction Z of the box 11, and is usually the wall with larger area of the box 11, so that compared with setting the fixing member 13 on other walls of the box 11, for example, compared with setting the fixing member 13 on the side wall with smaller area of the box 11, it is convenient to install, and can improve the structural stability.

[0110] For example, as shown in FIGS. 2-9, the second box portion 112 can be a groove structure, and the first wall 1122 can be the bottom wall of the second box portion 112, which is perpendicular to the height direction Z of the box 11, i.e., the fixing member 13 is fixed to the bottom wall of the second box portion 112. For another example, the second box portion 112 can also be a plate structure, and the second box portion 112 is perpendicular to the height direction Z of the box 11, and the fixing member 13 is fixed with the second box portion 112. For another example, the second box portion 112 can also be a structure with other shapes, and the first wall 1122 is the wall of the second box portion 112 which is perpendicular to the height direction Z of the box 11.

[0111] In the embodiments of the present application, the fixing member 13 comprises a third fixing portion 133, and the third fixing portion 133 is fixed with the second box portion 112 through a third connecting member 143, and the third connecting member 143 penetrates the second box portion 112 and is fixed with the third fixing portion 133, which is simple in structure and easy to implement, and can improve the connection strength and stability between the fixing member 13 and the second box portion 112 through the third connecting member 143. For example, the third fixing portion 133 can be arranged around the opening region 1121 to facilitate installation.

[0112] In some embodiments, the third fixing part 133 is provided with a protruding structure 1331 on the side away from the second box part 112, which protrudes towards the direction away from the second box part 112 to increase the thickness of the third fixing part 133, improve the structural strength, and increase the connection strength and stability between the fixing part 13 and the second box part 112. For example, the position of the protruding structure 1331 can correspond to the position of the third connecting part 143 to facilitate the fixation of the third connecting part 143.

[0113] In some embodiments, the third connecting part 143 can be set according to actual application. For example, the third connecting part 143 can include a bolt, a screw, or a rivet. For another example, as shown in FIGS. 2-9, the third connecting part 143 can be a bolt, which facilitates installation and disassembly and improves the connection stability between the fixing part 13 and the second box part 112.

[0114] It should be understood that the number of third connecting parts 143 of the embodiments of the present application can be set according to actual application. For example, as shown in FIGS. 2-9, the third fixing part 133 and the second box part 112 can be fixedly connected by a plurality of third connecting parts 143, which are arranged around the opening area 1121 to improve the structural stability between the fixing part 13 and the second box part 112.

[0115] In some embodiments, a sealing part 135 is arranged between the fixing part 13 and the second box part 112 to improve the sealing between the fixing part 13 and the second box part 112. For example, the sealing part 135 can be arranged around the opening area 1121 to improve the sealing of the box 11.

[0116] In some embodiments, the fixing part 13 is provided with a groove 136 with an opening towards the second box part 112, which is used to accommodate the sealing part 135 to facilitate the positioning and installation of the sealing part 135, and can also reduce the space occupied by the sealing part 135 in the interior of the box 11 to improve the space utilization of the box 11. For example, as shown in FIGS. 2-9, the groove 136 can be arranged around the third fixing part 133 to facilitate the sealing between the fixing part 13 and the second box part 112, thereby improving the sealing of the box 11.

[0117] It should be understood that the specific structures of the first box part 111 and the second box part 112 of the box 11 of the embodiments of the present application can be set according to actual application.

[0118] FIG. 10 shows an exploded structural schematic diagram of the box 11 according to an embodiment of the present application; FIG. 11 shows a possible cross-sectional schematic diagram of the battery device 10 according to an embodiment of the present application, for example, the diagram of FIG. 11 can employ the box 11 as shown in FIG. 10; FIG. 12 shows another possible cross-sectional schematic diagram of the battery device 10 according to an embodiment of the present application, for example, the diagram of FIG. 12 can employ the box 11 as shown in FIG. 10; the cross-sections shown in FIG. 11 and FIG. 12 can be cross-sections perpendicular to the length direction X of the battery device 10.

[0119] In embodiments of the present application, the shapes of the first box part 111 and the second box part 112 can be determined according to the shapes of the components contained therein, for example, according to the shapes of the combination of the plurality of battery monomers 20 contained therein, at least one of the first box part 111 and the second box part 112 has an opening. For example, as shown in FIG. 10 to FIG. 12, the first box part 111 and the second box part 112 can each be a hollow cuboid and each have one face as an opening face, the opening of the first box part 111 and the opening of the second box part 112 are oppositely arranged, and the first box part 111 and the second box part 112 are mutually engaged to form a box 11 having a closed cavity, which can be used to contain the plurality of battery monomers 20. The plurality of battery monomers 20 combined in parallel or in series or in a hybrid combination are placed in the box 11 formed by the engagement of the first box part 111 and the second box part 112.

[0120] For another example, unlike the examples shown in FIG. 10 to FIG. 12, only one of the first box part 111 and the second box part 112 can be a hollow cuboid having an opening, and the other can be a plate to cover the opening. For example, the first box part 111 is a hollow cuboid and has an opening, and the second box part 112 can be a plate, for example, the second box part 112 covers the opening of the first box part 111 to form a box 11 having a closed cavity, which can be used to contain the plurality of battery monomers 20.

[0121] In some embodiments, the battery device 10 can further include other components. For example, the battery device 10 can further include a current collecting component 15, which can be used to achieve electrical connection between the plurality of battery monomers 20, for example, in parallel or in series or in a hybrid combination. Specifically, the current collecting component 15 can achieve electrical connection between the battery monomers 20 by connecting the electrode terminals 201 of the battery monomers 20; or the current collecting component 15 can also achieve electrical connection between the battery monomers 20 by connecting other components of the battery monomers 20. The current collecting component 15 can be fixed to the corresponding components of the battery monomers 20 by welding, for example, can be fixed to the electrode terminals 201, the sealing structure or the shell, etc., and embodiments of the present application are not limited thereto.

[0122] It should be understood that the first case portion 111 of the embodiment of the present application is provided with a heat management member 12, which can be any one wall of the first case portion 111, or which can be located inside the first case portion 111.

[0123] In some embodiments, as shown in FIGS. 10 to 12, the heat management member 12 of the embodiment of the present application can be located inside the first case portion 111. For example, the heat management member 12 can be used to divide the case 11 into a plurality of spaces in the height direction Z of the battery device 10, at least part of the plurality of spaces being used to accommodate the battery cells 20.

[0124] In some embodiments, the case 11 can include an electrical cavity 11a, a collection cavity 11b, and a heat management member 12. The heat management member 12 is used to separate the electrical cavity 11a and the collection cavity 11b. Here, the term “separate” means to isolate, which can be sealed or not sealed. The electrical cavity 11a is used to accommodate a plurality of battery cells 20, and further, can be used to accommodate a busbar member 15 to achieve electrical connection between the plurality of battery cells 20. The electrical cavity 11a provides an accommodation space for the battery cells 20 and the busbar member 15, and the shape of the electrical cavity 11a can be determined according to the plurality of battery cells 20 and the busbar member 15. At least one of the plurality of battery cells 20 can include a pressure relief mechanism, which can be provided on a wall of the battery cell 20 facing the heat management member 12. The pressure relief mechanism is used to actuate to release the internal pressure or temperature when the internal pressure or temperature of the battery cell 20 provided with the pressure relief mechanism reaches a threshold value. The collection cavity 11b is used to collect the discharge from the battery cell 20 provided with the pressure relief mechanism when the pressure relief mechanism is actuated.

[0125] The electrical cavity 11a and the collection cavity 11b are separated by the heat management member 12. That is, the electrical cavity 11a accommodating the plurality of battery cells 20 and the busbar member 15 is separately provided from the collection cavity 11b collecting the discharge. In this way, when the pressure relief mechanism is actuated, the discharge of the battery cell 20 enters the collection cavity 11b, and does not or only a small amount enters the electrical cavity 11a, thereby reducing the influence on the electrical connection in the electrical cavity 11a, and thus the safety of the battery device 10 can be enhanced.

[0126] It should be understood that the first case portion 111 can be a one-piece structure as shown in FIG. 11, or as shown in FIG. 12, the first case portion 111 can include a plurality of components. For example, the first case portion 111 can include a side wall structure with both ends open and a protection member 1111, which can be used to cover one end opening of the side wall structure with both ends open, and the second case portion 112 is used to cover the other opening. The protection member 1111 can be used to protect the heat management member 12 and reduce damage to the heat management member 12 from the external environment.

[0127] Figure 13 shows an exploded structural schematic diagram of the box 11 according to another embodiment of the present application; and Figure 14 shows another possible cross-sectional schematic diagram of the battery device 10 according to an embodiment of the present application, for example, the box 11 shown in Figure 13 can be used, and the cross-section shown in Figure 14 can be a cross-section perpendicular to the length direction X of the battery device 10.

[0128] In some embodiments, as shown in Figures 13 and 14, the heat management component 12 can be any one wall of the first box portion 111. Specifically, the first box portion 111 includes a plurality of walls, and the heat management component 12 can be any one wall of the plurality of walls, for example, the heat management component 12 can be a bottom wall of the first box portion 111 opposite to the opening, so as to improve the space utilization of the battery device 10.

[0129] According to some embodiments of the present application, the present application further provides a power consuming device, which includes the battery device according to any one of the above-mentioned schemes, and the battery device is used to provide electric energy for the power consuming device.

[0130] The power consuming device can be a device or system of any one of the above-mentioned applications of the battery device.

[0131] According to some embodiments of the present application, referring to Figures 2 to 9, the present application provides a battery device 10, which includes: a box 11 for accommodating a battery monomer 20, the box 11 is provided with a beam 113; a heat management component 12 provided in the box 11, for adjusting the temperature of the battery monomer 20, the heat management component 12 includes a flow guide pipe 121 for injecting or discharging fluid inside the heat management component 12; a fixing member 13, the flow guide pipe 121 penetrates through the fixing member 13 and is fixed with the fixing member 13, and the fixing member 13 is fixed with the beam 113. The fixing member 13 is a die-cast structure. The flow guide pipe 121 penetrates through the fixing member 13 along the thickness direction of the fixing member 13, and one side of the fixing member 13 perpendicular to the thickness direction of the fixing member 13 is provided with a stepped structure 134.

[0132] The beam 113 includes a first beam 1131 and a second beam 1132 arranged in different extension directions and intersected with each other, and the fixing member 13 is fixed with the first beam 1131 and the second beam 1132 respectively. The first fixing portion 131 and / or the second fixing portion 132 is provided with a reinforcing rib 1311.

[0133] The box 11 comprises a first box part 111, which is a hollow structure with an opening, the beam 113 is located in the first box part 111, the first box part 111 is provided with the heat management component 12; a second box part 112 for covering the opening, the fixing part 13 is fixed with the second box part 112. The second box part 112 comprises an opening area 1121, the flow guide pipe 121 penetrates the opening area 1121 to expose the flow guide pipe 121. The fixing part 13 and the second box part 112 are provided with a sealing part 135. The fixing part 13 is provided with a groove 136 with an opening facing the second box part 112, the groove 136 is used for accommodating the sealing part 135.

[0134] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application. Especially, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized by, The application relates to a battery pack, comprising: a box (11) for accommodating battery monomers (20), wherein a beam (113) is arranged in the box (11); a heat management component (12) arranged in the box (11) and used for adjusting the temperature of the battery monomers (20), wherein the heat management component (12) comprises a flow guide pipe (121) used for injecting or discharging fluid inside the heat management component (12); a fixing member (13) through which the flow guide pipe (121) penetrates and is fixed, and the fixing member (13) is fixed with the beam (113).

2. The battery device according to claim 1, characterized by The flow guide pipe (121) penetrates the fixing member (13) along the thickness direction of the fixing member (13), and one side of the fixing member (13) perpendicular to the thickness direction of the fixing member (13) is provided with a stepped structure (134).

3. The battery device according to claim 1 or 2, characterized by, The beam (113) comprises a first beam (1131) and a second beam (1132) arranged in different extension directions and intersecting each other, and the fixing member (13) is fixed with the first beam (1131) and the second beam (1132) respectively.

4. The battery device of claim 3, wherein The fixing member (13) comprises a first fixing part (131) and a second fixing part (132), the first fixing part (131) is fixed with the first beam (1131) through a first connecting member (141) penetrating the first fixing part (131) and fixed with the first beam (1131); the second fixing part (132) is fixed with the second beam (1132) through a second connecting member (142) penetrating the second fixing part (132) and fixed with the second beam (1132).

5. The battery device of claim 4, wherein, The first fixing part (131) and / or the second fixing part (132) are provided with reinforcing ribs (1311).

6. The battery device according to any one of claims 1 to 5, characterized by, The box (11) comprises: a first box part (111) having a hollow structure with an opening, wherein the beam (113) is arranged in the first box part (111), and the first box part (111) is provided with the heat management component (12); a second box part (112) used for covering the opening, wherein the fixing member (13) is fixed with the second box part (112).

7. The battery device of claim 6, wherein The second box part (112) comprises an opening area (1121) through which the flow guide pipe (121) penetrates to expose the flow guide pipe (121).

8. The battery device according to claim 6 or 7, characterized by The fixing member (13) is fixed with a first wall (1122) of the second box part (112), and the first wall (1122) is perpendicular to the height direction of the box (11).

9. The battery device according to any one of claims 6 to 8, characterized by, A sealing member (135) is arranged between the fixing member (13) and the second box part (112).

10. The battery device of claim 9, wherein, The fixing member (13) is provided with a groove (136) opening towards the second box part (112), and the groove (136) is used for accommodating the sealing member (135).

11. The battery device according to any one of claims 6 to 10, characterized by, The fixing piece (13) comprises a third fixing part (133) fixed with the second box part (112) through a third connecting piece (143), and the third connecting piece (143) penetrates through the second box part (112) and is fixed with the third fixing part (133).

12. The battery device of claim 11, wherein, A protruding structure (1331) is arranged on the side of the third fixing part (133) away from the second box part (112), and the protruding structure (1331) protrudes towards the direction away from the second box part (112).

13. The battery device according to any one of claims 1 to 12, characterized by, The fixing piece (13) is a die-casting structure.

14. The battery device according to any one of claims 1 to 13, characterized by, The fixing piece (13) is provided with a through hole (137), and the flow guide pipe (121) penetrates through the fixing piece (13) through the through hole (137), The depth of the through hole (137) ranges from 2mm to 9mm, and optionally, the depth of the through hole (137) ranges from 4mm to 9mm.

15. An electrical device, characterized by The battery device comprises the battery device for powering the electric device.

Images