Battery device and electric device

Abstract

The utility model relates to the technical field of batteries, and provides a battery device and a power utilization device. The battery device comprises a box body; the heat management assembly is arranged in the box body, the heat management assembly comprises a plurality of heat management parts arranged at intervals in the first direction, every two adjacent heat management parts communicate with each other through a fluid pipeline, the fluid pipelines are located on at least one side of the heat management parts in the second direction, and the second direction is perpendicular to the first direction; one battery monomer is arranged between every two adjacent heat management components; the flow guide part is arranged below the fluid pipeline, a flow guide groove is formed in the side, facing the fluid pipeline, of the flow guide part, and at least one end of the flow guide groove is a liquid discharging end; the box body is provided with a bottom plate, the bottom plate is provided with at least one liquid discharging part, each liquid discharging part is correspondingly arranged below one liquid discharging end, and the liquid discharging parts are configured to be capable of communicating the interior and the exterior of the box body. According to the technical scheme, the use safety of the battery device can be improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery device and an electrical device. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] At present, with the rapid development of new energy vehicles, battery devices are increasingly entering the public eye. Among them, the battery device contains battery cells and multiple thermal management components for heat exchange with the battery cells. The multiple thermal management components are usually connected through fluid pipelines. However, when the fluid pipeline is broken or the fluid pipe joint leaks, it is easy to cause the battery cell to be soaked and insulation failure occurs, and there is a risk of arcing and ignition. Utility Model Content

[0004] The purpose of the present application is to provide a battery device and an electrical device to improve the safety of the battery device. This purpose is achieved through the following technical solutions:

[0005] In the first aspect, the present application provides a battery device, comprising: a housing; a thermal management component, arranged in the housing, the thermal management component comprising a plurality of thermal management components spaced apart along a first direction, each of the thermal management components being provided with a heat exchange channel, two adjacent thermal management components being connected via a fluid pipeline, the fluid pipeline being located on at least one side of the thermal management component along a second direction, the second direction being perpendicular to the first direction; at least one battery cell, one battery cell being arranged between two adjacent thermal management components; a flow guide, arranged below the fluid pipeline, the flow guide being provided with a flow guide groove on a side of the flow guide facing the fluid pipeline, at least one end of the flow guide groove being a drainage end; wherein the housing has a bottom plate, the bottom plate being provided with at least one drainage component, each of the drainage components being arranged below a corresponding drainage end, and the drainage component being configured to connect the interior and exterior of the housing.

[0006] According to the battery device provided in the present application, by arranging a guide member below the fluid pipeline and a drainage member on the bottom plate of the box body, and the drainage member is arranged below the drainage end of the guide member, the guide groove of the guide member can guide the liquid leaked from the fluid pipeline to the area where the drainage member is located. In this way, when the fluid pipeline is broken or the joint of the fluid pipeline leaks, the liquid can fall into the guide member below under the action of gravity and flow along the guide groove to the area where the drainage member is located. At this time, the drainage member can be opened to connect the inside and outside of the box body, so that the liquid can be discharged to the outside of the box body, thereby reducing the risk of insulation failure and arcing of the battery monomer due to long-term immersion, thereby improving the safety of the battery device.

[0007] In addition, the battery device provided in this application may also have the following additional technical features:

[0008] In some embodiments of the present application, the number of the guide member is one, the first end to the second end of the guide member are arranged to be inclined from top to bottom, and the second end of the guide member forms the liquid discharge end.

[0009] In the above technical solution, by tilting the guide member from one end to the other end from top to bottom, when the fluid pipeline ruptures or the fluid pipeline joint leaks, the liquid can flow into the guide groove under the action of gravity and fall into the area where the drainage member is located along the tilt direction of the guide groove, so that it can be easily discharged to the outside of the box through the drainage member.

[0010] In some embodiments of the present application, an output pole is provided on one side of the battery device, the battery device has one side of the output pole forming a high-voltage side, and the other side forming a low-voltage side, the first end of the guide member is provided corresponding to the high-voltage side, and the second side of the guide member is provided corresponding to the low-voltage side.

[0011] In the above technical solution, the output pole of the battery device is used to be electrically connected to the vehicle to form a high-pressure side, and the other side has no output pole to form a low-pressure side. By setting the first end of the guide member to correspond to the high-pressure side of the battery device and the second end to correspond to the low-pressure side, when leakage occurs in the fluid pipeline, the leaked liquid can quickly reach the low-pressure side from the high-pressure side under the action of water pressure, and there is no line leading out from the low-pressure side, thereby reducing the risk of liquid enrichment on the high-pressure side and causing a short circuit.

[0012] In some embodiments of the present application, the angle between the guide member and the horizontal plane is set in the range of 1° to 45°.

[0013] In the above technical solution, the angle between the guide member and the horizontal plane is greater than 0°, so that the liquid can flow along the inclined direction of the guide groove to the area where the drainage member is located, and the guide member is limited by the height of the battery device and the installation position of the fluid pipeline. Therefore, the inclination angle can be set to no more than 45° to facilitate the installation of the guide member.

[0014] In some embodiments of the present application, the angle between the guide member and the horizontal plane is set in the range of 2° to 10°.

[0015] In the above technical solution, by setting the angle between the guide member and the horizontal plane within the range of 2° to 10°, not only can the liquid flow along the inclined direction of the guide groove to the area where the drainage member is located, but it can also further facilitate the installation of the guide member.

[0016] In some embodiments of the present application, the number of the guide members is two, the guide grooves of the two guide members are connected, and the ends of the two guide members away from each other form the drainage end; wherein, along the height direction of the battery device, the height of the portion where the two guide members are connected is higher than the height of the drainage end.

[0017] In the above technical solution, by setting the number of guide members to two, the height of one end where the two guide members are connected is higher than the height of the other end of each guide member, that is, the two guide grooves are set at an angle, and a drainage member is provided below the drainage end of each guide member, so that when the liquid falls into the guide groove of each guide member, the liquid can flow along the extension direction of the guide groove of each guide member until it passes through the drainage end of each guide groove and falls into the areas where different drainage members are located, so that it can be discharged to the outside of the box through the drainage members below the two drainage ends, respectively, thereby improving the drainage efficiency and further reducing the risk of battery cells being soaked.

[0018] In some embodiments of the present application, at least one liquid collecting groove is provided on a side of the bottom plate facing the battery cell, and the liquid collecting groove is located below the liquid discharge end and corresponds to the position of the liquid discharge member.

[0019] In the above technical solution, a liquid collecting trough is provided on the side of the bottom plate facing the battery cell. The liquid collecting trough is located below the liquid discharge end and corresponds to the position of the liquid discharge member. The liquid collecting trough serves to collect the liquid discharged by the guide member, so as to reduce the risk of water accumulation in other areas due to the free flow of liquid along the bottom plate of the box body, and can facilitate the liquid to be discharged to the outside of the box body through the liquid discharge member after being collected.

[0020] In some embodiments of the present application, along the direction from the bottom plate to the battery cell, the projection of the drainage member on the liquid collecting groove is located within the liquid collecting groove.

[0021] In the above technical solution, the outer contour size of the drainage piece is not larger than that of the liquid collecting tank, so that when the drainage piece connects the inside and outside of the box, the liquid in the liquid collecting tank can quickly pass through the drainage piece and be discharged out of the box.

[0022] In some embodiments of the present application, the inner diameter of the liquid collecting tank gradually increases along the direction from the bottom plate to the battery cell.

[0023] In the above technical solution, by setting the inner wall surface of the liquid collecting tank to an inclined surface and gradually increasing the inner diameter of the liquid collecting tank from the bottom plate to the battery cell, it is convenient for the liquid to flow into the liquid collecting tank and flow along the inner wall surface of the liquid collecting tank to the area where the drainage piece is located, so as to be discharged to the outside of the box through the drainage piece.

[0024] In some embodiments of the present application, the battery device further includes at least one gathering member, which is disposed on a side of the bottom plate facing the battery cell and close to the drainage end, and is used to gather the liquid guided by the guide member to the drainage member.

[0025] In the above technical solution, the gathering member can gather the liquid discharged from the discharge end of the guide member, and then use the discharge member to discharge the liquid to the outside of the box, thereby reducing the risk of liquid splashing onto the inner wall of the box or the battery cell.

[0026] In some embodiments of the present application, the gathering member extends along the height direction of the battery device, and a concave surface is provided on a side of the gathering plate facing the liquid discharge end, and the concave surface partially surrounds the peripheral side of the liquid discharge end.

[0027] In the above technical solution, the concave surface of the gathering piece is arranged toward the discharge end and is in a semi-enclosed structure, so that the liquid discharged from the discharge end can flow along the concave surface of the gathering piece to the area where the discharge piece is located, and facilitate the liquid to be discharged to the outside of the box through the discharge piece.

[0028] In some embodiments of the present application, the gathering member has a notch at one end facing the flow guide member, and the width of the notch is set in the range of 0.1 cm-1 cm.

[0029] In the above technical solution, the notch is used to allow the liquid in the guide groove to flow from the discharge end into the gathering piece. By setting the width of the notch within the range of 0.1cm-1cm, not only can the outflow of liquid into the gathering piece be reduced, but also the leaked liquid outside the gathering piece can be allowed to flow into the gathering piece, thereby facilitating discharge to the outside of the box through the discharge piece.

[0030] In some embodiments of the present application, the height of the gathering member is not lower than the height of the drainage member, and the height of the gathering member is not higher than the height of the box body.

[0031] In the above technical solution, the height of the gathering piece can be reasonably set according to the height of the drainage piece and the height of the box body. The height of the gathering piece is not lower than the height of the drainage piece and not higher than the height of the box body, so that the liquid can flow along the concave surface of the gathering piece to the top of the drainage piece and can be accommodated in the box body. The structure and principle are relatively simple and easy to implement.

[0032] In some embodiments of the present application, each of the thermal management components is provided with a liquid inlet and a liquid outlet on both sides along the second direction, and the liquid inlet and the liquid outlet are both connected to the heat exchange flow channel; wherein the liquid inlets of a plurality of the thermal management components are connected through a group of fluid pipelines, and the liquid outlets of a plurality of the thermal management components are connected through another group of fluid pipelines, and at least one flow guide is arranged under each group of fluid pipelines.

[0033] In the above technical solution, fluid pipelines are provided on both sides of the thermal management component along the second direction, and a guide member is provided under each group of fluid pipelines. When the fluid pipelines on each side of the thermal management component along the second direction are ruptured or leakage occurs in the fluid pipeline joints, the liquid can be received by the guide grooves of the guide members, and the liquid can flow along the guide grooves to the area where the drainage member is located, so that it can be discharged to the outside of the box through the drainage members provided under the drainage ends on each side, which helps to improve the drainage efficiency.

[0034] In some embodiments of the present application, the inner wall surface of the guide groove is arc-shaped.

[0035] In the above technical solution, the inner wall of the guide groove is set to be arc-shaped, so that the liquid can flow to the middle along the inner wall of the guide groove under the action of gravity, and then discharged into the area where the drainage piece is located. The structure and principle are relatively simple and easy to implement.

[0036] In some embodiments of the present application, the drain member includes a drain valve.

[0037] In the above technical solution, the drain valve can use the up and down movement of the float to control the opening and closing of the valve. Specifically, a drain port is provided on the side of the drain valve facing the outside of the box, and a round float is provided inside the drain valve, which can move up and down with the change of the liquid level. When there is no liquid, the float seals the drain port due to its own weight and pressure. When there is liquid, the float rises and opens the drain port, so that the accumulated liquid can be discharged to the outside of the box through the drain port.

[0038] In a second aspect, the present application provides an electrical device, comprising a battery device as described in any one of the embodiments of the first aspect, wherein the battery device is used to supply power to the electrical device.

[0039] The electrical device provided in the present application includes the battery device described in any one of the embodiments of the first aspect, and thus has the technical effects of any of the above embodiments, which will not be described in detail herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0041] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0042] Figure 2 A schematic diagram of an exploded structure of a battery device provided in some embodiments of the present application;

[0043] Figure 3 for Figure 2 A schematic diagram of a partial structure of the battery device shown in one perspective;

[0044] Figure 4 A schematic diagram of an exploded structure of another battery device provided in some embodiments of the present application;

[0045] Figure 5 for Figure 4 A schematic diagram of a portion of the structure of the battery device from one viewing angle;

[0046] Figure 6 for Figure 5 A schematic diagram of a part of the structure of the battery device from another perspective;

[0047] Figure 7 for Figure 5 A schematic diagram of a partial structure of the battery device from another viewing angle;

[0048] Figure 8 A partial structural schematic diagram of another battery device provided in some embodiments of the present application;

[0049] Fig. 9 for Figure 8 A schematic structural diagram of the battery device from one perspective;

[0050] Fig.10 for Figure 8 A schematic structural diagram of the battery device from another perspective;

[0051] Fig.11 A schematic diagram of the assembly structure of a battery device provided in some embodiments of the present application;

[0052] in, Figures 2 to 11 The direction of the X-axis of the central coordinate system represents the first direction, the direction of the Y-axis represents the second direction, and the direction of the Z-axis represents the height direction of the battery device.

[0053] The reference numerals are as follows:

[0054] 1000. Vehicles;

[0055] 100. battery device; 200. controller; 300. motor;

[0056] 10. Box body; 11. Bottom plate; 12. Liquid collecting tank; 20. Thermal management component; 30. Fluid pipeline;

[0057] 40. Battery cell; 50. Flow guide; 51. Flow guide groove; 60. Liquid discharge member; 70. Gathering member; 71. Concave surface; 72. Notch. DETAILED DESCRIPTION

[0058] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0059] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0060] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0061] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0062] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0063] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0064] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0065] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0066] At present, from the perspective of market development, the application of battery devices is becoming more and more extensive. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of battery devices, the market demand is also constantly expanding.

[0067] The battery device contains battery cells and multiple thermal management components for heat exchange with the battery cells. The multiple thermal management components are usually connected through fluid pipelines. However, when the fluid pipeline is broken or the fluid pipe joint leaks, it is easy to cause the battery cells to be soaked and insulation failure occurs, and there is a risk of arcing and ignition.

[0068] In order to solve the problem that the fluid pipeline is broken and the battery monomer is soaked, resulting in insulation failure or arcing, the present application designs a battery device, wherein a thermal management component is arranged in the box of the battery device, the thermal management component includes a plurality of thermal management components arranged at intervals along a first direction, a battery monomer is arranged between adjacent thermal management components, and the plurality of thermal management components are connected through fluid management, and a guide member is arranged below the fluid pipeline, a guide groove is arranged on the side of the guide member facing the fluid pipeline, at least one end of the guide groove forms a drainage end for draining liquid, and a drainage member is arranged on the bottom plate of the box, and the drainage member is correspondingly arranged below the drainage end of the guide groove. In this way, when the fluid pipeline is broken or the fluid pipeline joint leaks, the liquid can be received by the guide groove of the guide member and flow along the guide groove to the area where the drainage member is located. At this time, the drainage member can connect the inside and outside of the box, so that the liquid can be discharged to the outside of the box, so as to reduce the risk of insulation failure or arcing of the battery monomer due to immersion caused by water accumulation inside the box.

[0069] The battery device disclosed in the embodiment of the present application can be used in, but not limited to, electrical devices such as vehicles, ships or aircraft. A power supply system comprising the battery cells and battery devices disclosed in the present application can be used to form the electrical device, which is conducive to reducing the safety of the battery device.

[0070] The embodiment of the present application provides an electric device using a battery as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0071] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device in an embodiment of the present application.

[0072] Please refer to Figure 1 , Figure 1A schematic diagram of the structure of a vehicle 1000 provided for some embodiments of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery device 100 is provided inside the vehicle 1000, and the battery device 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery device 100 may be used to power the vehicle 1000, for example, the battery device 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery device 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0073] In some embodiments of the present application, the battery device 100 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0074] The battery apparatus 100 mentioned in the embodiment of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include a plurality of battery cells 40, and the plurality of battery cells 40 are connected in series, in parallel or in mixed connection through a busbar component.

[0075] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells 40 .

[0076] As an example, the battery cell assembly may be a battery module, which is formed by arranging and fixing a plurality of battery cells to form an independent module. As an example, the battery module may be formed by bundling a plurality of battery cells by a cable tie.

[0077] In some embodiments, the battery device may be a battery pack, which includes a case and one or more battery cell assemblies, wherein the battery cell assemblies are accommodated in the case.

[0078] As an example, the battery cell assembly may be accommodated in the case 10 by fixing the battery module in the case 10 .

[0079] As an example, the battery cell assembly may also be accommodated in the case 10 by directly fixing the plurality of battery cells 40 to the case 10 .

[0080] As an example, the box 10 may include a first box and a second box. The first box and the second box are buckled together to form a closed space inside the box 10 to accommodate the battery cell assembly. The closed space here means covering or closing, which can be sealed or unsealed. The first box can be a top cover or a bottom plate.

[0081] As an example, the box body 10 may include a top cover, a frame and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that a closed space is formed inside the box body to accommodate the battery cell assembly.

[0082] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the bottom plate of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0083] The technical solutions described in the embodiments of the present application are applicable to various electrical devices using battery cells 40, such as mobile phones, portable devices, laptop computers, electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, for example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.

[0084] See also Figures 2 to 11 The embodiment of the present application provides a battery device 100 , including a housing 10 , a thermal management component, a fluid pipeline 30 , at least one battery cell 40 , a flow guide 50 , and a drainage member 60 . Among them, the thermal management component is arranged in the box body 10, and the thermal management component includes a plurality of thermal management components 20 arranged at intervals along a first direction (i.e., the X direction), each thermal management component 20 is provided with a heat exchange flow channel, and two adjacent thermal management components 20 are connected through a fluid pipeline 30, and the fluid pipeline 30 is located on at least one side of the thermal management component 20 along a second direction (i.e., the Y direction), and the second direction is perpendicular to the first direction; a battery cell 40 is arranged between two adjacent thermal management components 20; a guide member 50 is arranged below the fluid pipeline 30, and a guide groove 51 is provided on the side of the guide member 50 facing the fluid pipeline 30, and at least one end of the guide groove 51 is a drainage end; the box body 10 has a bottom plate 11, and the bottom plate 11 is provided with at least one drainage member 60, each drainage member 60 is correspondingly arranged below a drainage end, and the drainage member 60 is configured to be able to conduct the inside and outside of the box body 10.

[0085] Exemplarily, the thermal management component 20 is a heat exchange plate, and the heat exchange flow channel inside the heat exchange plate is used to circulate a heat exchange medium (such as water or coolant, etc.).

[0086] Exemplarily, there are multiple fluid pipelines 30, and the fluid pipelines 30 can be set on one side of the thermal management component 20 along the second direction, or on both sides of the thermal management component 20 along the second direction. Two adjacent thermal management components 20 are connected through the fluid pipelines 30.

[0087] Exemplarily, the first direction is the length direction of the box body 10 , and the second direction is the width direction of the box body 10 .

[0088] In the embodiment of the present application, the battery cell 40 may be a secondary battery. A secondary battery refers to a battery cell 40 that can be continuously used by activating active materials by charging after the battery cell 40 is discharged.

[0089] The battery cell 40 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 storage battery, etc., which is not limited in the embodiments of the present application.

[0090] The battery cell 40 generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator, and the separator is arranged between the negative electrode and the positive electrode. During the charge and discharge process of the battery cell 40, active ions (such as lithium ions) are inserted and removed back and forth 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.

[0091] In some embodiments, the battery cell 40 may include an outer shell. The outer shell may 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. In some embodiments, the outer shell may be a sealed structure or a non-sealed structure. As an example, when the outer shell is a non-sealed structure, the outer shell plays a role in protecting the electrode assembly, and a sealed bag is also included between the outer shell and the electrode assembly, and the sealed bag is used to encapsulate the electrode assembly and the electrolyte. Specifically, the sealed bag may be a bag-shaped insulating member or an aluminum-plastic film. When the outer shell is a sealed structure, it is used to encapsulate components such as the electrode assembly and the electrolyte.

[0092] As an example, the battery cell 40 can be a cylindrical battery cell 40, a prismatic battery cell 40, a soft-pack battery cell 40 or a battery cell 40 of other shapes. The prismatic battery cell 40 includes a square shell battery cell 40, a blade-shaped battery cell 40, a polygonal battery, and the polygonal battery is, for example, a hexagonal battery, etc. There is no special limitation in the present application.

[0093] In some embodiments, the housing includes an end cap and a shell, the shell is provided with an opening, and the end cap is provided on the opening. The shell may be provided with one or more openings. One or more end caps may also be provided.

[0094] In some embodiments, at least one electrode terminal is disposed on the housing, and the electrode terminal is electrically connected to the electrode tab. The electrode terminal may be directly connected to the electrode tab, or may be indirectly connected to the electrode tab through a current collecting member. The electrode terminal may be disposed on an end cap, or may be disposed on the housing.

[0095] In some embodiments, a pressure relief mechanism is disposed on the housing to discharge the internal gas of the battery cell 40 .

[0096] As an example, when the internal pressure or temperature of the battery cell 40 reaches a predetermined threshold, it is actuated to release the internal pressure or temperature. When the internal pressure or temperature of the battery cell 40 reaches a predetermined threshold, the pressure relief mechanism performs an action or a weak structure provided in the pressure relief mechanism is destroyed, thereby forming an opening or channel for the internal pressure or temperature to be released. The threshold design varies according to different design requirements. The threshold may depend on one or more materials of the positive electrode sheet, negative electrode sheet, electrolyte and separator in the battery cell 40.

[0097] As an example, the pressure relief mechanism may be integrally formed with the housing.

[0098] As an example, the pressure relief mechanism may also be separately provided and connected to the housing.

[0099] The "actuation" mentioned in this application means that the pressure relief mechanism is in action or activated to a certain state, so that the internal pressure and temperature of the battery cell 40 can be released. The action produced by the pressure relief mechanism may include but is not limited to: the components in the pressure relief mechanism move to form an exhaust channel, at least a part of the pressure relief mechanism ruptures, breaks, is torn or opened, etc. When the pressure relief mechanism is actuated, the high-temperature and high-pressure substances inside the battery cell 40 will be discharged from the actuated part as emissions. In this way, the battery cell 40 can be depressurized and cooled under controllable pressure or temperature, thereby avoiding potential more serious accidents.

[0100] In some embodiments, when the housing is a non-sealed structure, the pressure relief mechanism can be configured as a through hole for discharging the gas inside the battery cell 40 .

[0101] The emissions from the battery cells 40 mentioned in the present application include, but are not limited to: electrolyte, dissolved or split positive and negative electrode sheets, separator fragments, high-temperature and high-pressure gas generated by the reaction, flames, and the like.

[0102] Exemplarily, the discharge member 60 may be an automatic discharge valve. It is understandable that the number of the discharge members 60 is the same as the number of the discharge ends.

[0103] According to the battery device 100 provided in the present application, by arranging a guide member 50 below the fluid pipeline 30, and arranging a drainage member 60 on the bottom plate 11 of the box body 10, and the drainage member 60 is arranged below the drainage end of the guide member 50, the guide groove 51 of the guide member 50 can guide the liquid leaked from the fluid pipeline 30 to the area where the drainage member 60 is located. In this way, when the fluid pipeline 30 is broken or the joint of the fluid pipeline 30 leaks, the liquid can fall into the guide member 50 below under the action of gravity, and flow along the guide groove 51 to the area where the drainage member 60 is located. At this time, the drainage member 60 can be opened to connect the inside and outside of the box body 10, so that the liquid can be discharged to the outside of the box body 10, thereby reducing the risk of insulation failure and arcing of the battery cell 40 due to long-term immersion, thereby improving the safety of the battery device 100.

[0104] See also Figure 2 and Figure 3 According to some embodiments of the present application, the number of the guide member 50 is one, the first end to the second end of the guide member 50 are inclined from top to bottom, and the second end of the guide member 50 forms a drainage end.

[0105] It can be understood that the number of the flow guide members 50 located below the fluid pipeline 30 on at least one side of the heat management component 20 along the second direction is set to one.

[0106] By tilting the guide member 50 from one end to the other from top to bottom, when the fluid pipeline 30 is broken or the joint of the fluid pipeline 30 leaks, the liquid can flow into the guide groove 51 under the action of gravity and fall into the area where the drainage member 60 is located along the tilt direction of the guide groove 51, so that it can be easily discharged to the outside of the box 10 through the drainage member 60.

[0107] According to some embodiments of the present application, an output pole is provided on one side of the battery device 100, the side of the battery device 100 having the output pole forms a high-voltage side, and the other side forms a low-voltage side, the first end of the guide member 50 is provided corresponding to the high-voltage side, and the second side of the guide member 50 is provided corresponding to the low-voltage side.

[0108] The output pole of the battery device 100 is used to be electrically connected to the vehicle 1000 to form a high voltage side, and the other side has no output pole to form a low voltage side. Specifically, the high voltage side of the battery device 100 faces the driver's seat side of the vehicle 1000.

[0109] By setting the first end of the guide member 50 to correspond to the high-pressure side of the battery device 100 and the second end to correspond to the low-pressure side, when leakage occurs in the fluid pipeline 30, the leaked liquid can quickly reach the low-pressure side from the high-pressure side under the action of water pressure, and there is no line leading out from the low-pressure side, thereby reducing the risk of liquid accumulation on the high-pressure side and causing a short circuit.

[0110] In the above technical solution, the high-pressure end of the fluid pipeline 30 is used to connect to the liquid outlet pipe of the refrigeration unit, and the low-pressure end is used to connect to the liquid return end of the refrigeration unit. By setting the first end of the guide member 50 corresponding to the high-pressure end and the second end corresponding to the low-pressure end, when leakage occurs in the fluid pipeline 30, the leaked liquid can quickly reach the second end (discharge end) from the first end under the action of water pressure, thereby improving the discharge efficiency.

[0111] In some embodiments, the angle α between the guide member 50 and the horizontal plane is set in the range of 1° to 45°.

[0112] When the angle α between the guide member 50 and the horizontal plane is greater than 0°, the liquid can flow along the inclined direction of the guide groove 51 to the area where the drainage member 60 is located. The guide member 50 is limited by the height of the battery device 100 and the installation position of the fluid pipeline 30. Therefore, the inclination angle can be set to no more than 45° to facilitate the installation of the guide member 50.

[0113] Specifically, the angle α between the guide member 50 and the horizontal plane may be set within a range of 2° to 10°.

[0114] By setting the angle α between the guide member 50 and the horizontal plane within the range of 2° to 10°, not only can the liquid flow along the inclined direction of the guide groove 51 to the area where the drainage member 60 is located, but it can also further facilitate the installation of the guide member 50.

[0115] See also Figures 4 to 6 According to some embodiments of the present application, there are two guide members 50, the guide grooves 51 of the two guide members 50 are connected, and the ends of the two guide members 50 away from each other form drainage ends; wherein, along the height direction of the battery device 100 (i.e., the Z direction), the height of one end where the two guide members 50 are connected is higher than the height of the other end.

[0116] It can be understood that, in this embodiment, the number of the flow guides 50 located below the fluid pipeline 30 on at least one side of the thermal management component 20 is two.

[0117] By setting the number of guide members 50 to two, the height of one end where the two guide members 50 are connected is higher than the height of the other end of each guide member 50, that is, the two guide grooves 51 are set at an angle, and a drainage member 60 is set below the drainage end of each guide member 50, so that when the liquid falls into the guide groove 51 of each guide member 50, the liquid can flow along the extension direction of the guide groove 51 of each guide member 50 until it passes through the drainage end of each guide groove 51 and falls into the areas where different drainage members 60 are located, so that it can be discharged to the outside of the box body 10 through the drainage members 60 below the two drainage ends, respectively, thereby improving the drainage efficiency and further reducing the risk of battery cells 40 being soaked.

[0118] See also Figure 5 and Figure 7 According to some embodiments of the present application, at least one liquid collecting groove 12 is provided on the side of the bottom plate 11 facing the battery cell 40 . The liquid collecting groove 12 is located below the liquid discharge end and corresponds to the position of the liquid discharge member 60 .

[0119] It can be understood that a liquid collecting trough 12 is correspondingly provided at the liquid discharge end of each flow guide member 50 .

[0120] By setting a collecting groove 12 on the side of the bottom plate 11 facing the battery cell 40, the collecting groove 12 is located below the discharge end and corresponds to the position of the discharge member 60. The collecting groove 12 serves to collect the liquid discharged by the guide member 50 to reduce the risk of water accumulation in other areas due to the free flow of liquid along the bottom plate 11 of the box body 10, and can facilitate the discharge of the liquid to the outside of the box body 10 through the discharge member 60 after being collected.

[0121] According to some embodiments of the present application, along the direction from the bottom plate 11 to the battery cell 40 , the projection of the drain member 60 on the liquid collecting groove 12 is located inside the liquid collecting groove 12 .

[0122] The outer contour of the drain member 60 is not larger than that of the trough 12 , so that when the drain member 60 is connected to the inside and outside of the housing 10 , the liquid in the trough 12 can quickly pass through the drain member 60 and be discharged to the outside of the housing 10 .

[0123] According to some embodiments of the present application, the inner diameter of the liquid collecting tank 12 gradually increases along the direction from the bottom plate 11 to the battery cell 40 .

[0124] Exemplarily, the angle between the inner wall surface of the liquid collecting tank 12 and its axial direction is greater than 0 and less than 90°. For example, it can be set to 30° or 45°.

[0125] It can be understood that the inner wall surface of the liquid collecting tank 12 is a slope, and the inner diameter of the liquid collecting tank 12 gradually increases in the direction from the bottom plate 11 to the battery cell 40, so that the liquid can flow into the liquid collecting tank 12 and flow along the inner wall surface of the liquid collecting tank 12 to the area where the drainage member 60 is located, so as to be discharged to the outside of the box body 10 through the drainage member 60.

[0126] According to some embodiments of the present application, the liquid collecting tank 12 is annular, and the diameter of the liquid collecting tank 12 is set in the range of 4 cm to 6 cm.

[0127] According to some embodiments of the present application, the depth of the sump 12 is set in the range of 0.1 cm to 2 cm.

[0128] See also Figures 9 and 10According to some embodiments of the present application, the battery device 100 further includes at least one gathering member 70, which is disposed on a side of the bottom plate 11 facing the battery cell 40 and is disposed close to the discharge end. The gathering member 70 is used to gather the liquid guided by the guide member 50 to the top of the discharge member 60.

[0129] As an example, the gathering member 70 may be a gathering plate, which is in a semi-enclosed annular structure.

[0130] The gathering member 70 can gather the liquid discharged from the discharge end of the guide member 50 , and then use the discharge member 60 to discharge the liquid to the outside of the box body 10 , thereby reducing the risk of the liquid splashing onto the inner wall of the box body 10 or the battery cell 40 .

[0131] See also Figure 8 According to some embodiments of the present application, the gathering member 70 extends along the height direction of the battery device 100, and a concave surface 71 is provided on the side of the gathering plate facing the discharge end, and the concave surface 71 partially surrounds the peripheral side of the discharge end.

[0132] The concave surface 71 of the gathering piece 70 is arranged toward the discharge end and is in a semi-enclosed annular structure, so that the liquid discharged from the discharge end can flow along the concave surface 71 of the gathering piece 70 to the area where the discharge piece 60 is located, and the liquid is discharged to the outside of the box body 10 through the discharge piece 60.

[0133] According to some embodiments of the present application, the gathering member 70 has a notch 72 at one end facing the flow guide member 50 , and the width of the notch 72 is set in the range of 0.1 cm-1 cm.

[0134] The width of the notch 72 refers to the distance between the two ends of the two notches. Specifically, the notch 72 is extended along the height direction of the gathering piece 70 and penetrates the gathering piece 70.

[0135] The notch 72 is used to allow the liquid in the guide groove 51 to flow from the discharge end into the internal area of ​​the gathering piece 70. By setting the width of the notch within the range of 0.1cm-1cm, not only can the outflow of liquid into the gathering piece 70 be reduced, but also the leaked liquid outside the gathering piece 70 can be allowed to flow into the interior of the gathering piece 70, thereby facilitating discharge to the outside of the box through the discharge piece 60.

[0136] According to some embodiments of the present application, the height of the gathering member 70 is not lower than the height of the drainage member 60 , and the height of the gathering member 70 is not higher than the height of the box body 10 .

[0137] The height of the gathering piece 70 can be reasonably set according to the height of the drainage piece 60 and the height of the box body 10. The height of the gathering piece 70 is not lower than the height of the drainage piece 60 and is not higher than the height of the box body 10, so that the liquid can flow along the concave surface 71 of the gathering piece 70 to the top of the drainage piece 60 and can be accommodated in the box body 10. The structure and principle are relatively simple and easy to implement.

[0138] According to some embodiments of the present application, the height of the gathering piece 70 is set in the range of 2 cm to 13 cm.

[0139] Specifically, the height of the gathering piece 70 is set within a range of 4 cm to 7 cm.

[0140] See also Figure 4 , Figure 5 and Figure 8 According to some embodiments of the present application, each thermal management component 20 is provided with a liquid inlet and a liquid outlet on both sides along the second direction, and the liquid inlet and the liquid outlet are both connected to the heat exchange flow channel; wherein, the liquid inlets of multiple thermal management components 20 are connected through a group of fluid pipelines 30, and the liquid outlets of multiple thermal management components 20 are connected through another group of fluid pipelines 30, and at least one flow guide 50 is arranged under each group of fluid pipelines 30.

[0141] Fluid pipelines 30 are provided on both sides of the thermal management component 20 along the second direction, and a guide member 50 is provided under each group of fluid pipelines 30. When the fluid pipelines 30 on each side of the thermal management component 20 along the second direction are ruptured or leakage occurs at the joints of the fluid pipelines 30, the liquid can be received by the guide grooves 51 of the guide members 50, and the liquid can flow along the guide grooves 51 to the area where the drainage member 60 is located, so that it can be discharged to the outside of the box body 10 through the drainage members 60 provided under the drainage ends on each side, which helps to improve the drainage efficiency.

[0142] According to some embodiments of the present application, the drain member 60 includes a drain valve.

[0143] The drain valve can use the up and down movement of the float to control the opening and closing of the valve. Specifically, a drain port is provided on the side of the drain valve facing the outside of the box body 10, and a round float is provided inside the drain valve, which can move up and down with the change of the liquid level. When there is no liquid, the float seals the drain port due to its own weight and pressure. When there is liquid, the float rises and opens the drain port, so that the accumulated liquid can be discharged to the outside of the box body 10 through the drain port.

[0144] According to some embodiments of the present application, see Figures 2 to 11The present application provides a battery device 100, comprising: a housing 10, a thermal management component, a fluid pipeline 30, a battery cell 40, a flow guide 50 and a drainage component 60. The thermal management component is arranged in the housing 10, and the thermal management component includes a plurality of thermal management components 20 arranged at intervals along a first direction, each thermal management component 20 is provided with a heat exchange flow channel, each thermal management component 20 is provided with a liquid inlet and a liquid outlet on both sides along a second direction, and the liquid inlet and the liquid outlet are both connected to the heat exchange flow channel, the liquid inlets of the plurality of thermal management components 20 are connected through a group of fluid pipelines 30, and the liquid outlets of the plurality of thermal management components 20 are connected through another group of fluid pipelines 30, and at least one flow guide 50 is arranged below each group of fluid pipelines 30. A flow guide groove 51 is provided on the side of the flow guide 50 facing the fluid pipeline 30, and a drainage end is formed at at least one end of the flow guide groove 51. The bottom plate 11 of the box body 10 is provided with at least two drain valves, which are correspondingly arranged below at least two drain ends, and each drain valve can conduct the inside and outside of the box body 10. Therefore, when the fluid pipeline 30 is broken or the joint of the fluid pipeline 30 leaks, the liquid can be received by the guide groove 51, and flow along the guide groove 51 to the area where the drain valve is located, and then discharged to the outside of the box body 10 through the drain valve, thereby reducing the risk of insulation failure or arcing of the battery cell 40 due to immersion, and improving the safety of the battery device 100.

[0145] The above is only a preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A battery device, characterized in that: include: A box body having a bottom plate, wherein the bottom plate is provided with at least one drainage member, wherein the drainage member is configured to connect the inside and the outside of the box body; A thermal management component is disposed in the box, the thermal management component includes a plurality of thermal management components spaced apart along a first direction, each of the thermal management components is provided with a heat exchange flow channel, two adjacent thermal management components are connected by a fluid pipeline, the fluid pipeline is located on at least one side of the thermal management component along a second direction, and the second direction is perpendicular to the first direction; at least one battery cell, wherein one battery cell is disposed between two adjacent thermal management components; At least one guide member is arranged below the fluid pipeline, and a guide groove is provided on the side of the guide member facing the fluid pipeline, at least one end of the guide groove is a drainage end, and a drainage member is correspondingly arranged below each drainage end.

2. The battery device according to claim 1, characterized in that: The number of the guide member is one, and the first end to the second end of the guide member are arranged obliquely from top to bottom, and the second end of the guide member forms the liquid discharge end.

3. The battery device according to claim 2, characterized in that: An output pole is arranged on one side of the battery device, one side of the battery device having the output pole forms a high-voltage side, and the other side forms a low-voltage side, the first end of the guide member is arranged corresponding to the high-voltage side, and the second side of the guide member is arranged corresponding to the low-voltage side.

4. The battery device according to claim 2, characterized in that: The angle between the guide member and the horizontal plane is set in the range of 1° to 45°.

5. The battery device according to claim 4, characterized in that: The angle between the guide member and the horizontal plane is set in the range of 2° to 10°.

6. The battery device according to claim 1, characterized in that: There are two flow guide members, the flow guide grooves of the two flow guide members are connected, and ends of the two flow guide members away from each other form the liquid discharge ends; Wherein, along the height direction of the battery device, the height of the connecting portion of the two flow guide members is higher than the height of the liquid discharge end.

7. The battery device according to any one of claims 1 to 6, characterized in that: At least one liquid collecting groove is provided on a side of the bottom plate facing the battery cell. The liquid collecting groove is located below the liquid discharge end and corresponds to the position of the liquid discharge member.

8. The battery device according to claim 7, characterized in that: Along the direction from the bottom plate to the battery cell, the projection of the liquid discharge member on the liquid collecting groove is located in the liquid collecting groove.

9. The battery device according to claim 8, characterized in that: Along the direction from the bottom plate to the battery cell, the inner diameter of the liquid collecting tank gradually increases.

10. The battery device according to any one of claims 1 to 6, characterized in that: The battery device further comprises at least one gathering member, which is arranged on a side of the bottom plate facing the battery cell and close to the liquid discharge end, and is used to gather the liquid guided by the guide member to the liquid discharge member.

11. The battery device according to claim 10, characterized in that: The gathering piece extends along the height direction of the battery device, and a concave surface is provided on one side of the gathering piece facing the liquid discharge end, and the concave surface partially surrounds the peripheral side of the liquid discharge end.

12. The battery device according to claim 11, characterized in that: The gathering piece has a notch at one end facing the flow guide piece, and the width of the notch is set in the range of 0.1 cm-1 cm.

13. The battery device according to claim 10, characterized in that: The height of the gathering member is not lower than the height of the drainage member, and the height of the gathering member is not higher than the height of the box body.

14. The battery device according to any one of claims 1 to 6, characterized in that: Each of the heat management components is provided with a liquid inlet and a liquid outlet on both sides along the second direction, and the liquid inlet and the liquid outlet are both connected to the heat exchange flow channel; Among them, the liquid inlets of multiple thermal management components are connected through a group of fluid pipelines, and the liquid outlets of multiple thermal management components are connected through another group of fluid pipelines, and at least one guide member is arranged under each group of fluid pipelines.

15. The battery device according to any one of claims 1 to 6, characterized in that: The inner wall surface of the guide groove is arc-shaped.

16. The battery device according to any one of claims 1 to 6, characterized in that: The liquid discharge member comprises a liquid discharge valve.

17. An electrical device, characterized in that: It comprises a battery device as described in any one of claims 1 to 15, wherein the battery device is used to supply power to the electrical device.

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