Battery device and electric appliance

Abstract

The application provides a battery device (100) and a power consumption equipment. The battery device (100) comprises a box body (10), a battery monomer assembly, an electric control device (30), a plurality of sampling pieces (40) and a fixing piece (50). The battery monomer assembly comprises a plurality of battery monomers (20) arranged side by side. The electric control device (30) is electrically connected with a connector (13). The sampling piece (40) has a connecting end (40a) and a plurality of sampling ends (40b). The connecting end (40a) is electrically connected with the electric control device (30). Each sampling end (40b) is electrically connected with a corresponding battery monomer (20). The fixing piece (50) is arranged in the box body (10) and adjacent to the connecting end (40a) of the sampling piece (40). The fixing piece (50) is used for limiting and fixing at least one sampling piece (40). The battery device (100) provided by the application effectively improves the connection stability of the connecting position of the electric control device (30) and the sampling piece (40) in the battery device (100) for battery replacement.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery device and an electrical appliance. Background Technology

[0002] In the field of battery swapping, connectors for use during the swapping process are usually installed on the battery pack housing. These connectors are connected to the connectors of the electrical equipment to provide power.

[0003] However, the battery swapping process inevitably causes the battery device to shake or vibrate, which can affect the electrical connection interfaces of various components inside the battery device, leading to poor contact or even damage. Utility Model Content

[0004] The purpose of this application is to provide a battery device and an electrical appliance, which aims to solve the problem of poor electrical interface contact of internal components in existing battery devices caused by battery swapping.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] In a first aspect, embodiments of this application provide a battery device, including...

[0007] The enclosure includes a top cover, on which a connector is provided. The connector is used for electrical connection with electrical equipment, and the insertion and removal direction of the connector is parallel to the height direction of the enclosure.

[0008] A battery cell assembly, comprising a plurality of battery cells arranged side by side, each battery cell being disposed within the housing;

[0009] An electrical control device is located inside the housing and is electrically connected to the connector.

[0010] Multiple sampling elements, each sampling element having a connection end and multiple sampling ends, the connection end being electrically connected to the electronic control device; each sampling end being electrically connected to a corresponding battery cell; and

[0011] A fixing member is disposed inside the housing and adjacent to the connecting end of the sampling member, and the fixing member is used to limit and fix at least one of the sampling members.

[0012] The beneficial effects of this application are as follows: The battery device provided by this application has a connector on its top cover for electrical connection with the electrical equipment. The insertion and removal direction of the connector is parallel to the height direction of the housing. Therefore, during the insertion and removal of the connector and the electrical equipment, poor contact may occur at the electrical interfaces of the components inside the battery device housing. By directly connecting the connection end of the sampling component to the electronic control device, that is, without the need for an adapter, and by using a fixing component to limit and fix at least one sampling component, the connection stability of the connection between the electronic control device and the sampling component in the battery swapping device is effectively improved.

[0013] In some embodiments, the connection end includes a plug connector, and the electronic control device is provided with an interface structure that is plugged into and connected to the plug connector.

[0014] By adopting the above technical solution, the sampling component is connected to the interface structure of the electronic control device through a plug-in connector, which improves the convenience of connecting the sampling component to the electronic control device. In addition, the direct plug-in connection can reduce the use of adapter harnesses and further reduce costs.

[0015] In some embodiments, the electronic control device includes a battery monitoring module, wherein the interface structure of the battery monitoring module is oriented toward the battery cell;

[0016] The battery monitoring module forms a first gap between one end facing the top cover and the inner surface of the top cover.

[0017] By adopting the above technical solution, the interface structure of the battery monitoring module is oriented towards the battery cell, which can further shorten the elongation of the sampling component. At the same time, a first gap is formed between the end of the battery monitoring module and the inner surface of the top cover, which can reduce the impact of the top cover deformation on the battery monitoring module caused by frequent plugging and unplugging of the connector during the battery swapping process, thereby improving the stability of the connection between the interface structure of the battery monitoring module and the plug connector.

[0018] In some embodiments, in the height direction of the housing, the interface structure on the battery monitoring module is positioned at a height lower than the height of the end of the battery monitoring module facing the top cover.

[0019] By adopting the above technical solution, the height of the interface structure is reduced, providing the space required for the plug-in connector to be installed. At the same time, it can also reduce the impact of deformation of the top cover caused by the plugging and unplugging of the battery device on the plug-in connector, thereby improving the stability of the plug-in connector and the interface structure.

[0020] In some embodiments, the sampling element includes a sampling main segment and a sampling extension segment connected to the sampling main segment. The sampling end includes a sampling circuit board. The sampling main segment has multiple sampling circuit boards on opposite sides along its own length direction. The sampling main segment is placed on each of the battery cells, and each sampling circuit board is electrically connected to the corresponding battery cell.

[0021] The sampling extension section is provided with the plug-in connector at the end away from the sampling main section.

[0022] By adopting the above technical solution, the sampling component is divided into two parts: the sampling main section and the sampling extension section. The sampling main section is electrically connected to the corresponding battery cell through multiple sampling circuit boards, while the sampling extension section is directly plugged into the interface structure of the battery monitoring module through a connector.

[0023] In some embodiments, the extension direction of the sampling extension of at least one of the sampling elements corresponds to the position of the interface structure on the electronic control device.

[0024] By adopting the above technical solution, the distance from the sampling extension section to the interface structure of the electronic control device can be minimized, thereby shortening the length of the sampling extension section.

[0025] In some embodiments, the sampling extension of at least one of the sampling elements is limited and fixed to the fixing element.

[0026] By adopting the above technical solution, the sampling extension section in the sampling component, which is in an extended or suspended state, is limited and fixed by the fixing component, so as to improve the stability of the sampling extension section during use.

[0027] In some embodiments, the sampling extension is in a folded state, and the fastener limits and fixes the folded sampling extension.

[0028] By adopting the above technical solution, the folded sampling extension section can be adjusted to connect with the interface structure, adapting to interface structures with different spacing on the electronic control device.

[0029] In some embodiments, the housing includes a base with a receiving cavity, a crossbeam provided in the base, the crossbeam being used to divide the receiving cavity into a first sub-cavity and a second sub-cavity, the electronic control device being disposed in the first sub-cavity, and each of the battery cells being disposed in the second sub-cavity;

[0030] The sampling extension extends beyond the crossbeam, and the fixing member is located on the crossbeam.

[0031] By adopting the above technical solution and using the crossbeam as a connecting carrier for the fixing component, the routing length of the sampling extension section can be significantly shortened.

[0032] In some embodiments, a second gap is formed between the end of the crossbeam facing the top cover and the inner surface of the top cover.

[0033] By adopting the above technical solution, a second gap is formed between the inner surface of the crossbeam and the top cover, so as to reduce the probability that the crossbeam will be impacted by the top cover during the battery swapping process, thus affecting the stability of the fastener on the crossbeam.

[0034] In some embodiments, the fastener includes a connecting portion connected to the crossbeam and a limiting portion disposed on the connecting portion, the limiting portion being used to limit and fix the sampling extension section.

[0035] By adopting the above technical solution, the connecting part of the fastener is connected to the crossbeam, and the limiting part is used to limit and fix the sampling extension section.

[0036] In some embodiments, the connecting portion includes a connecting plate connected to the crossbeam, the connecting plate being provided with a connector for connecting the crossbeam.

[0037] By adopting the above technical solution, the connecting plate is connected to the crossbeam through a plug-in connection method, thereby improving the connection stability between the connecting plate and the crossbeam.

[0038] In some embodiments, the limiting portion includes a snap-fit ​​plate with one end hinged to the connecting plate and a snap-fit ​​arm disposed on the connecting plate, wherein the end of the snap-fit ​​plate away from the connecting plate is snap-fitted to the snap-fit ​​arm.

[0039] By adopting the above technical solution, the sampling extension section is fixed between the snap-fit ​​plate and the snap-fit ​​arm by snap-fitting the snap-fit ​​plate and the connecting plate.

[0040] In some embodiments, a buffer is provided between the snap-fit ​​plate and the connecting plate, and the buffer is clamped in the sampling extension section.

[0041] By adopting the above technical solution, the damage to the sampling extension section is reduced by using a buffer.

[0042] In some embodiments, the fastener has a mounting surface connected to the crossbeam, a rough surface and a hook surface both disposed opposite to the mounting surface, and the sampling extension is limited and fixed between the rough surface and the hook surface.

[0043] By adopting the above technical solution, the hook and rough surfaces are glued together to limit and fix the sampling extension section.

[0044] In some embodiments, the fastener has a first adhesive surface connected to the crossbeam and a second adhesive surface disposed opposite to the first adhesive surface, and the sampling extension is limited and fixed on the second adhesive surface.

[0045] By adopting the above technical solution, the sampling extension is bonded to the second bonding surface to limit and fix it.

[0046] Secondly, embodiments of this application also provide an electrical device, including the battery device described above.

[0047] It is understood that the beneficial effects of the second and third aspects mentioned above can be found in the relevant descriptions in the first aspect mentioned above, and will not be repeated here. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 This is a schematic diagram of the structure of the electrical equipment provided in the embodiments of this application;

[0050] Figure 2 This is a schematic diagram of the structure of the battery device provided in the embodiments of this application;

[0051] Figure 3 An exploded view of a single battery cell provided in an embodiment of this application;

[0052] Figure 4 A top view of the battery device provided in the embodiments of this application;

[0053] Figure 5 This is a schematic diagram of the battery device provided in the embodiments of this application, excluding the top cover;

[0054] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0055] Figure 7 Another structural schematic diagram of the battery device provided in the embodiment of this application, excluding the top cover;

[0056] Figure 8 for Figure 7 Enlarged view of point B in the middle;

[0057] Figure 9 This is a schematic diagram of the structure of the fixing component of the battery device provided in Embodiment 1 of this application;

[0058] Figure 10 A cross-sectional view of the fixing member of the battery device provided in Embodiment 2 of this application;

[0059] Figure 11 This is a cross-sectional view of the fixing member of the battery device provided in Embodiment 3 of this application.

[0060] The following are the labeling elements in the figure:

[0061] 1000, vehicle; 200, controller; 300, motor;

[0062] 100. Battery assembly; 10. Housing; 11. Top cover; 12. Base; 121. Crossbeam; 13. Connector;

[0063] 20. Battery cell; 21. End cap; 22. Housing; 23. Electrode assembly;

[0064] 30. Electronic control device; 31. Battery monitoring module;

[0065] 40. Sampling component; 40a. Connecting end; 40b. Sampling end; 41. Main sampling section; 42. Sampling extension section;

[0066] 50. Fastener; 51. Connector; 511. Connecting plate; 512. Insertion; 52. Limiting part; 521. Snap-on plate; 522. Snap-on arm; 53. Buffer; 50a. Mounting surface; 50b. Rough surface; 50c. Hook surface; 50d. First bonding surface; 50e. Second bonding surface. Detailed Implementation

[0067] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0068] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0069] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0070] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0071] In the field of battery swapping, battery devices can supply power to electrical devices through plug-and-play connections. Taking a vehicle as an example, the swappable battery device is located in the vehicle's chassis, and the battery swapping needs are met through plug-and-play connections.

[0072] However, the electrical interfaces between the internal components of the battery device and the individual battery cells can be affected during the battery swapping process. For example, vibrations or pressure during the insertion and removal of the battery device can easily cause poor contact at the electrical interfaces.

[0073] In view of this, this application provides a battery device that, while directly connecting the connection end of the sampling component to the electronic control device, also adds a fixing component to fix the part of the sampling component near the connection end, so as to reduce the impact of the battery device on the electrical connection between the sampling component and the electronic control device during the battery swapping process, thereby improving the connection stability at the electrical interface between the sampling component and the electronic control device.

[0074] The battery cells disclosed in this application can be used in electrical devices that use battery devices as a power source or in various energy storage systems that use battery devices as energy storage elements. Electrical devices can be, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0075] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0076] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 100 is provided inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0077] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0078] Please refer to Figure 2 , Figure 2 This is an exploded view of a battery device 100 provided in some embodiments of this application. The battery device 100 mentioned in the embodiments of this 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 20, which are connected in series, parallel, or mixed connection via a busbar.

[0079] In some embodiments, the battery cell assembly is typically formed by arranging a plurality of battery cells 20.

[0080] As an example, the battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells 20 into a single module. As an example, the battery module can be formed by bundling multiple battery cells 20 together with cable ties.

[0081] In some embodiments, the battery device 100 may be a battery pack, which includes a housing 10 and one or more battery cell assemblies housed in the housing 10.

[0082] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be housed in the housing 10 by fixing the battery module in the housing 10.

[0083] As an example, the battery cell assembly can also be housed in the housing 10 by directly fixing multiple battery cells 20 to the housing 10.

[0084] As an example, the housing 10 may include a first housing and a second housing. The first housing and the second housing are fastened together to form a closed space inside the housing 10 to house the battery cell assembly. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first housing may be a top cover or a bottom plate.

[0085] As an example, the housing 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 the interior of the housing 10 forms an enclosed space to accommodate the battery cell assembly.

[0086] In some embodiments, the housing 10 may be part of the chassis structure of the vehicle 1000. For example, a portion of the housing 10 may be at least a portion of the floor of the vehicle 1000, or a portion of the housing 10 may be at least a portion of the crossbeams and longitudinal beams of the vehicle 1000.

[0087] The technical solutions described in the embodiments of this application are applicable to various electrical devices that use battery cells 20, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles and spacecraft.

[0088] In this embodiment of the application, the battery cell 20 can be a secondary battery, which refers to a battery cell 20 that can be used again after the battery cell has been discharged by recharging to activate the active materials.

[0089] The battery cell 20 can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0090] Please refer to Figure 3 , Figure 3 This is an exploded structural diagram of a battery cell 20 provided in some embodiments of this application. The battery cell 20 refers to the smallest unit constituting the battery device 100. For example... Figure 3 The battery cell 20 includes an end cap 21, a housing 22, an electrode assembly 23, and other functional components.

[0091] End cap 21 refers to a component that covers the opening of housing 22 to isolate the internal environment of battery cell 20 from the external environment. The shape of end cap 21 can be adapted to the shape of housing 22 to fit it. Optionally, end cap 21 can be made of a material with certain hardness and strength (such as aluminum alloy), so that end cap 21 is not easily deformed under pressure and impact, giving battery cell 20 higher structural strength and improved reliability. Functional components such as electrode terminals can be provided on end cap 21. Electrode terminals can be used for electrical connection with electrode assembly 23 for outputting or inputting electrical energy to battery cell 20. In some embodiments, end cap 21 can also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of battery cell 20 reaches a threshold. The material of end cap 21 can also be various, such as, but not limited to, copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. In some embodiments, an insulating element may be provided on the inner side of the end cap 21. The insulating element can be used to isolate the electrical connection components within the housing 22 from the end cap 21 to reduce the risk of short circuits. For example, the insulating element may be made of plastic, rubber, etc.

[0092] The housing 22 is a component used to cooperate with the end cap 21 to form the internal environment of the battery cell 20. This internal environment can accommodate the electrode assembly 23, electrolyte, and other components. The housing 22 and the end cap 21 can be independent components. An opening can be provided on the housing 22, and the end cap 21 closes the opening to form the internal environment of the battery cell 20. Alternatively, the end cap 21 and the housing 22 can be integrated. Specifically, the end cap 21 and the housing 22 can form a common connecting surface before other components are inserted into the housing. When it is necessary to encapsulate the interior of the housing 22, the end cap 21 closes the housing 22. The housing 22 can be of various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 22 can be determined according to the specific shape and size of the electrode assembly 23. The housing 22 can be made of various materials, such as, but not limited to, copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0093] Electrode assembly 23 is the component in the battery cell 20 where electrochemical reactions occur. The casing 22 may contain one or more electrode assemblies 23. The electrode assembly 23 is mainly formed by winding or stacking positive and negative electrode sheets, and typically a separator is provided between the positive and negative electrode sheets. The portions of the positive and negative electrode sheets containing active material constitute the main body of the electrode assembly 23, while the portions of the positive and negative electrode sheets without active material each constitute a tab. The positive and negative tabs may be located together at one end of the main body or separately at both ends of the main body. During the charging and discharging process of the battery, the positive and negative active materials react with the electrolyte, and the tabs connect to the electrode terminals to form a current loop.

[0094] Please refer to Figures 4 to 6 , Figure 8 This application provides a battery device 100, including a housing 10, a battery cell assembly, an electronic control device 30, multiple sampling components 40, and a fixing component 50.

[0095] The enclosure 10 includes a top cover 11 with a connector 13 for electrical connection to electrical equipment. The insertion and removal direction of the connector 13 is parallel to the height direction of the enclosure 10. The battery cell assembly includes multiple battery cells 20 arranged side by side, each battery cell 20 being located inside the enclosure 10. The electronic control device 30 is located inside the enclosure 10 and is electrically connected to the connector 13. The sampling element 40 has a connection end 40a and multiple sampling ends 40b. The connection end 40a is electrically connected to the electronic control device 30. Each sampling end 40b is electrically connected to the corresponding battery cell 20. The fixing element 50 is located inside the enclosure 10 and adjacent to the connection end 40a of the sampling element 40. The fixing element 50 is used to limit and fix at least one sampling element 40.

[0096] Understandably, the battery device 100 provided in this application can be used in battery swapping scenarios. Specifically, a connector 13 is provided on the top cover 11 of the housing 10. The connector 13 is an interface structure for plugging and unplugging with the connector of the electrical equipment. Furthermore, the plugging and unplugging direction of the connector 13 and the electrical equipment is parallel to the height direction of the housing 10. That is, the battery device 100 as a whole enters or exits the battery swapping equipment along its own height direction.

[0097] A battery cell assembly is composed of multiple battery cells 20 arranged side by side. For example, multiple battery cell assemblies can be arranged inside the housing 10, and each battery cell assembly can be arranged side by side along the width direction of the housing 10. In each battery cell assembly, each battery cell 20 is arranged side by side along the length direction of the housing 10.

[0098] The electronic control device 30 is an electrical device or component within the battery device 100 that monitors the individual battery cells. For example, the electronic control device 30 may be a battery management main control circuit board, a battery cell 20 monitoring circuit board, or a battery monitoring module. The function of the electronic control device 30 is to collect high-voltage signals and low-voltage signals from each individual battery cell to monitor and control the individual battery cells.

[0099] The sampling component 40 is a wiring harness structure used for electrically connecting each battery cell 20 and the electronic control device 30. Therefore, the sampling component 40 has a connection end 40a connected to the electronic control device 30 and a sampling end 40b connected to each battery cell 20. Here, the connection method between the connection end 40a and the electronic control device 30 can be welding, for example, directly welding one end of the sampling component 40 to the circuit board or module body of the electronic control device 30, resulting in higher reliability. Alternatively, the connection method between the connection end 40a and the electronic control device 30 can also be plug-in connection. For example, the connection end 40a is a male connector structure, and the electronic control device 30 is provided with a female connector structure adapted to the male connector structure. Electrical connection between the two is achieved through plug-in connection. Furthermore, the connection end 40a of the sampling component 40 is directly plugged into the electronic control device 30 without using any other adapter structure. The sampling end 40b can be a flexible circuit board or a plate, etc., for electrical connection with the battery cell 20.

[0100] The fastener 50 is a structural component used to limit and fix the sampling component 40. The fastener 50 is located adjacent to the connecting end 40a. In actual implementation, the fastener 50 can be used to limit and fix one or more sampling components 40. Optionally, the fastener 50 can be a clamping structure, using a clamping method to limit and fix the sampling component 40; alternatively, the fastener 50 can be an adhesive structure such as Velcro or double-sided tape, using an adhesive method to limit and fix the sampling component 40.

[0101] During battery swapping in the battery device 100, the connector 13 and the device's connector are frequently plugged and unplugged. Since the plugging and unplugging direction of the connector 13 is along the height of the battery device 100, the vibrations or impacts caused by this plugging and unplugging will inevitably affect the electrical connections between the battery cells and the electronic control device 30 within the housing 10, specifically the electrical connection between the sampling element 40 and the electronic control device 30. This could lead to poor contact or even disconnection. The battery device 100 of this application directly connects the connection end 40a of the sampling element 40 to the electronic control device 30, without using an adapter. Furthermore, a fixing element 50 is used to limit and fix at least one sampling element 40. This effectively improves the connection stability between the electronic control device 30 and the sampling element 40 in the battery device 100 during battery swapping.

[0102] Please refer to Figure 6 and Figure 8 In some embodiments, the connection end 40a includes a plug connector, and the electronic control device 30 is provided with an interface structure (not shown in the figure) that is plugged into the plug connector.

[0103] Understandably, in this embodiment, the connection end 40a is a male connection structure, that is, a plug-in connector. The electronic control device 30 is provided with a female connection structure that is compatible with the plug-in connector, that is, an interface structure. Thus, the communication connection between each battery cell 20 and the electronic control device 30 is achieved through a direct plug-in connection method.

[0104] Thus, the sampling component 40 is connected to the interface structure of the electronic control device 30 via a plug-in connector, which improves the convenience of connecting the sampling component 40 to the electronic control device 30. Furthermore, the direct plug-in connection can reduce the use of adapter harnesses, further reducing costs.

[0105] Please refer to Figure 6 In some embodiments, the electronic control device 30 includes a battery monitoring module 31, the interface structure of which faces the battery cell 20.

[0106] The battery monitoring module 31 forms a first gap (not shown) between one end of the top cover 11 facing the inner surface of the top cover 11.

[0107] Understandably, the battery monitoring module 31 is an electrical module used to monitor and manage the status of the battery cell 20, such as monitoring the voltage, current, temperature, and charge of the battery cell 20. Furthermore, the interface structure on the battery monitoring module 31 faces the battery cell 20, which is more conducive to connecting to the connection terminal 40a of the sampling element 40 and shortens the wiring distance of the connection terminal 40a of the sampling element 40.

[0108] The first gap formed between the end of the battery monitoring module 31 facing the top cover 11 and the inner surface of the top cover 11 means that a certain distance is formed between the battery monitoring module 31 and the top cover 11, so that during the battery swapping process, the connector 13 will not affect the setting position of the top cover 11 due to frequent plugging and unplugging, which is a certain amount of deformation or vibration. In other words, the probability of the battery monitoring module 31 being touched or squeezed by the top cover 11 during the entire battery swapping process is reduced.

[0109] For example, the battery monitoring module 31 is typically a cubic structure. Taking the battery monitoring module 31 as an example where it is erected and fixed inside the housing 10, the battery monitoring module 31 should have a bottom end connected to the housing 10 and a top end facing the top cover 11. The interface structure is located between the bottom end and the top end, and a first gap is formed between the top end and the inner surface of the top cover 11. That is, a safe distance is formed between the top end of the battery monitoring module 31 and the top cover 11. Therefore, the vibration or deformation of the top cover 11 caused during the battery swapping process will have a lower probability of affecting the battery monitoring module 31, thereby improving the connection stability of the connection end 40a of the sampling component 40 and the interface structure of the battery monitoring module 31.

[0110] Thus, the interface structure of the battery monitoring module 31 is oriented towards the battery cell 20, which can further shorten the elongation of the sampling component 40. At the same time, a first gap is formed between the end of the battery monitoring module 31 and the inner surface of the top cover 11, which can reduce the impact of the deformation of the top cover 11 on the battery monitoring module 31 caused by the frequent plugging and unplugging of the connector 13 during the battery swapping process, thereby improving the stability of the connection between the interface structure of the battery monitoring module 31 and the plug-in connector.

[0111] In some embodiments, in the height direction of the housing 10, the position of the interface structure on the battery monitoring module 31 is lower than the height of the end of the battery monitoring module 31 facing the top cover 11.

[0112] Understandably, the battery monitoring module 31 is usually a cubic structure. Taking the battery monitoring module 31 as an example where it is erected and fixed inside the housing 10, the battery monitoring module 31 should have a bottom end connected to the housing 10 and a top end facing the top cover 11. The interface structure is located between the bottom end and the top end. Therefore, the interface structure is also far away from the top cover 11 of the housing 10 to reduce the impact of the battery swapping process on the connection point between the connection end 40a and the interface structure.

[0113] Optionally, while ensuring the convenience of connecting the connection end 40a to the interface structure, the interface structure can be positioned as far away from the top cover 11 as possible on the battery monitoring module 31.

[0114] In this way, the height of the interface structure is reduced, providing space for the plug-in connector to be installed. At the same time, it can also reduce the impact of deformation of the top cover 11 caused by the plugging and unplugging of the battery device 100 on the plug-in connector, thereby improving the stability of the plug-in connector and the interface structure.

[0115] Please refer to Figures 5 to 8In some embodiments, the sampling element 40 includes a sampling main body segment 41 and a sampling extension segment 42 connected to the sampling main body segment 41. The sampling end 40b includes a sampling circuit board. The sampling main body segment 41 is provided with multiple sampling circuit boards on opposite sides along its own length direction. Furthermore, the sampling main body segment 41 is placed on each battery cell 20, and each sampling circuit board is electrically connected to the corresponding battery cell 20.

[0116] The sampling extension section 42 is provided with a plug-in connector at the end away from the sampling main body section 41.

[0117] Understandably, the sampling main body segment 41 is the main part of the sampling component 40, and the sampling main body segment 41 is mainly located on the battery cell 20. It is electrically connected to the corresponding battery cell 20 through each sampling end 40b to collect the corresponding parameter information of the battery cell 20. The sampling end 40b can be a sampling circuit board, which is a flexible circuit board or a sheet metal plate. The sampling circuit board can be integrally formed with the sampling main body segment 41, or it can be connected to the sampling main body segment 41 through welding or fastening.

[0118] Since each battery cell 20 is arranged side by side along the length or width of the housing 10, the sampling main body section 41 also needs to be extended along the length or width of the housing 10. At the same time, each sampling circuit board is arranged sequentially on the opposite sides of the sampling main body section 41 to collect the parameter information of the corresponding battery cell 20.

[0119] The sampling extension section 42 is the part of the sampling component 40 that extends toward the electronic control device 30. The sampling extension section 42 can be integrally formed with the sampling main body section 41, or it can be connected to the sampling main body section 41 by welding, locking, or other connection methods. In this way, the plug-in connector is set at the end of the sampling extension section 42 away from the sampling main body section 41, so that the sampling extension section 42 can be plugged into the electronic control device 30.

[0120] Thus, the sampling component 40 is divided into two parts: the sampling main body section 41 and the sampling extension section 42. The sampling main body section 41 is electrically connected to the corresponding battery cell 20 through multiple sampling circuit boards, while the sampling extension section 42 is directly plugged into the interface structure of the battery monitoring module 31 through a plug-in connector.

[0121] In some embodiments, the extension direction of the sampling extension 42 of at least one sampling element 40 corresponds to the position of the interface structure on the electronic control device 30.

[0122] Understandably, when the interface structure on the electronic control device 30 corresponds to the extension direction of the sampling extension section 42, it means that the sampling extension section 42 runs along its own extension direction and is plugged into the interface structure. At this time, the length of the sampling extension section 42 is the shortest.

[0123] Optionally, there are three sampling components 40. Since the length of the electronic control device 30 is relatively small, the spacing between the interface structures on the electronic control device 30 is relatively small. Therefore, the extension direction of the sampling extension segment 42 of one of the sampling components 40 is selected to correspond to the position of one of the interface structures on the electronic control device 30, so as to satisfy that the sampling extension segment 42 of the current sampling component 40 can be inserted into the corresponding interface structure with the shortest trace length. That is, the extension direction of the sampling extension segment 42 of the current sampling component 40 is perpendicular to the interface structure of the electronic control device 30.

[0124] Of course, in other embodiments, the sampling extension 42 of more sampling elements 40 and the wiring length of the corresponding interface structure can be optimized according to the layout position of the interface structure on the electronic control device 30.

[0125] In this way, the distance from the sampling extension section 42 to the interface structure of the electronic control device 30 can be minimized, thereby shortening the length of the sampling extension section 42.

[0126] In some embodiments, at least one sampling member 40 has its sampling extension 42 fixed to the fixing member 50.

[0127] Understandably, since the distance between the electronic control device 30 and the battery cell 20 is uncertain, the length of the sampling extension 42 of the sampling component 40 should be greater than the distance between the electronic control device 30 and the battery cell 20 to meet the corresponding plug-in connection requirements. Therefore, the sampling extension 42 will most likely be in a suspended state, which will exert a certain pulling effect on the connection end 40a, thereby affecting the connection effect between the connection end 40a and the interface structure. Therefore, the longer sampling extension 42 in the sampling component 40 can be limited and fixed by the fixing component 50.

[0128] For example, the fixing member 50 can be set inside the housing 10 on the side close to the battery cell 20, and the sampling extension 42 of the sampling member 40 can be folded at least once and then fixed to the fixing member 50. Alternatively, the fixing member 50 can also be set inside the housing 10 on the side close to the electronic control device 30, that is, the fixing member 50 is closer to the electronic control device 30.

[0129] The limiting and fixing methods of the sampling extension 42 on the fixing member 50 include, but are not limited to, clamping limiting, adhesive limiting, or a combination of the two.

[0130] For example, the fastener 50 is a clamping structure, which includes a passive part and a clamping part that is hinged to the passive part at one end and snapped to the passive part at the other end, clamping the folded or folded sampling extension 42 between the passive part and the clamping part for limiting and fixing.

[0131] For example, the fastener 50 is a double-sided adhesive structure having a first adhesive surface and a second adhesive surface disposed opposite to the first adhesive surface. The first adhesive surface is bonded to the inner wall of the housing 10 to keep the double-sided adhesive structure fixed, and then the folded or unclamped sampling extension 42 is bonded to the second adhesive surface.

[0132] Thus, the sampling extension section 42 in the sampling member 40, which is in an extended or suspended state, is limited and fixed by the fastener 50 to improve the stability of the sampling extension section 42 during use.

[0133] Please refer to Figure 8 In some embodiments, the sampling extension 42 is folded, and the fixing member 50 limits and fixes the folded sampling extension 42.

[0134] Understandably, when the length of the sampling extension 42 is long, or when the connection end 40a of the sampling extension 42 is not positioned relative to the interface structure on the electronic control device 30, it is necessary to fold the sampling extension 42 to shorten its length, or adjust the insertion position of the connection end 40a of the sampling extension 42.

[0135] For example, as shown in the figure, three interface structures are provided on the electronic control device 30 at intervals along their own length. The projection of the sampling extension 42 of one of the sampling components 40 onto the electronic control device 30 along its extension direction is offset from the corresponding interface structure. Then, the sampling extension 42 is folded at least once, so that the projection of the connecting end 40a on the sampling extension 42 onto the electronic control device 30 along its extension direction gradually coincides with the position of the interface structure on the electronic control device 30. Then, the folded sampling extension 42 is limited and fixed on the fixing member 50 so that the connecting end 40a on the sampling extension 42 is connected to the interface structure.

[0136] Thus, the folded sampling extension 42 can be adjusted to connect with the interface structure to adapt to interface structures with different spacing on the electronic control device 30.

[0137] Please refer to Figures 5 to 8 In some embodiments, the housing 10 includes a base 12 with a accommodating cavity, a crossbeam 121 is provided in the base, the crossbeam 121 is used to divide the accommodating cavity into a first sub-cavity and a second sub-cavity, the electronic control device 30 is provided in the first sub-cavity, and each battery cell 20 is provided in the second sub-cavity; the sampling extension section 42 extends beyond the crossbeam 121, and the fixing member 50 is provided on the crossbeam 121.

[0138] Understandably, the base 12 is the main body of the housing 10, and together with the top cover 11, it forms a sealed space. The crossbeam 121 is a beam structure that extends along the length or width of the housing 10. The function of the crossbeam 121 is to divide the accommodating cavity of the base 12 to provide upper spatial restraint for each battery cell 20. Therefore, the crossbeam 121 divides the accommodating cavity into a first sub-cavity and a second sub-cavity.

[0139] Since the crossbeam 121 is positioned horizontally between the electronic control device 30 and each battery cell 20, the sampling extension section 42 must extend beyond the crossbeam 121 to be electrically connected to the electronic control device 30. At the same time, the fastener 50 is provided on the crossbeam 121, which can further shorten the length of the sampling extension section 42.

[0140] Here, the connection methods between the fastener 50 and the crossbeam 121 include, but are not limited to, bolt connection, plug connection, snap connection and adhesive connection.

[0141] For example, the fastener 50 is provided with expansion screws, and the crossbeam 121 is provided with mounting holes, and the expansion screws are pressed into the mounting holes to connect the fastener 50 to the crossbeam 121.

[0142] Alternatively, an adhesive layer can be provided on the fastener 50, or an adhesive layer can be provided on the crossbeam 121, so that the fastener 50 can be attached to the crossbeam 121 through the adhesive effect of the adhesive layer.

[0143] In this way, by using the crossbeam 121 as the connecting carrier of the fixing member 50, the routing length of the sampling extension section 42 can be greatly shortened.

[0144] In some embodiments, the crossbeam 121 forms a second gap (not shown) between the end of the top cover 11 facing the top cover 11 and the inner surface of the top cover 11.

[0145] Understandably, the crossbeam 121 should typically have a top end facing the top cover 11 and a bottom end opposite to the top end, wherein the bottom end is connected to the base 12, and the end of the crossbeam 121 facing the top cover 11, that is, the top end forms a corresponding gap with the inner surface of the top cover 11, so as to allow the sampling extension 42 of the sampling member 40 to extend beyond the crossbeam 121, that is, to run a line between the top end of the crossbeam 121 and the inner wall of the top cover 11.

[0146] Similarly, the second gap refers to the certain distance between the crossbeam 121 and the top cover 11, so that during the power swapping process, the connector 13 will not cause a certain amount of deformation or vibration to the top cover 11 due to frequent plugging and unplugging, thus not affecting the crossbeam 121, the sampling component 40 and the fixing component 50 on the crossbeam 121. In other words, the probability of the crossbeam 121 being touched or squeezed by the top cover 11 during the entire power swapping process is reduced.

[0147] Thus, a second gap is formed between the crossbeam 121 and the inner surface of the top cover 11, in order to reduce the probability that the crossbeam 121 will be impacted by the top cover 11 during the battery swapping process, thereby affecting the stability of the fastener 50 on the crossbeam 121.

[0148] Of course, in other embodiments, through holes can be made on the crossbeam 121, and the sampling component 40 can be routed through the through holes instead of routed over the top of the crossbeam 121.

[0149] Please refer to Figure 9 In some embodiments, the fastener 50 includes a connecting portion 51 connected to the crossbeam 121 and a limiting portion 52 provided on the connecting portion 51, the limiting portion 52 being used to limit and fix the sampling extension 42.

[0150] Understandably, the connecting part 51 is the portion of the fixing member 50 used to connect with the crossbeam 121, and the limiting part 52 is the portion of the fixing member 50 used to limit and fix the sampling extension section 42. Here, the structural form of the connecting part 51 includes, but is not limited to, a connecting plate, a connecting block, and the adhesive surface of double-sided adhesive; and the structural form of the limiting part 52 includes, but is not limited to, a limiting plate, a limiting block, and the other adhesive surface of double-sided adhesive. Furthermore, depending on actual usage requirements, the connection method between the limiting part 52 and the connecting part 51 can be integral molding, threaded connection, snap-fit, etc.

[0151] For example, the connecting part 51 is a connecting plate, which is connected to the crossbeam 121 by screws, and the limiting part 52 is a limiting block, which is clamped on the connecting plate, and the two are connected by screws. Then, the sampling extension section 42 is clamped between the limiting block and the connecting plate.

[0152] For example, the fastener 50 is a double-sided adhesive structure, wherein the connecting part 51 is the first adhesive surface of the double-sided adhesive structure, and the limiting part 52 is the second adhesive surface of the double-sided adhesive structure. The first adhesive surface and the second adhesive surface are arranged back to back. The first adhesive surface is bonded to the crossbeam 121 to realize the connection of the double-sided adhesive structure to the crossbeam 121. Then, the sampling extension 42 is pasted on the second adhesive surface for limiting and fixing.

[0153] Thus, the connecting part 51 of the fastener 50 is connected to the crossbeam 121, and the sampling extension section 42 is limited and fixed by the limiting part.

[0154] Please refer to Figure 9 In some embodiments, the connecting part 51 includes a connecting plate 511 connected to the crossbeam 121, and the connecting plate 511 is provided with a plug 512 for connecting the crossbeam 121.

[0155] Understandably, the connector 512 can be an expansion screw, pin, rivet, etc., which connects the connecting plate 511 and the crossbeam 121 through a plug-in connection, thereby improving the connection stability between the connecting plate 511 and the crossbeam 121.

[0156] Meanwhile, the shape and structure of the connecting plate 511 can also be adapted. For example, if the connecting plate 511 is designed as an L-shaped structure or a similar L-shaped structure, the short side of the L-shaped structure can be overlapped at the top of the crossbeam 121 to increase the number of connection points between the connecting plate 511 and the crossbeam 121, reduce the stress at the plug 512, and further improve the connection stability between the fastener 50 and the crossbeam 121.

[0157] Please refer to Figure 9 In some embodiments, the limiting part 52 includes a snap-fit ​​plate 521 with one end hinged to the connecting plate 511 and a snap-fit ​​arm 522 disposed on the connecting plate 511, wherein the end of the snap-fit ​​plate 521 away from the connecting plate 511 is snap-fitted to the snap-fit ​​arm 522.

[0158] Understandably, the snap-fit ​​plate 521 is hinged to the connecting plate 511. One end of the snap-fit ​​plate 521 can rotate relative to the connecting plate 511 around the hinge position. At the same time, the other end of the snap-fit ​​plate 521 is snapped to the snap-fit ​​arm 522. Thus, the snap-fit ​​plate 521 and the connecting plate 511 enclose each other to form a clamping structure. The sampling extension section 42 is limited and fixed between the snap-fit ​​plate 521 and the connecting plate 511.

[0159] Thus, by using the snap-fit ​​plate 521 to snap-fit ​​the snap-fit ​​arm 522, the sampling extension section 42 is limited and fixed between the snap-fit ​​plate 521 and the connecting plate 511.

[0160] Please refer to Figure 9 In some embodiments, a buffer 53 is provided between the snap-fit ​​plate 521 and the connecting plate 511, and the buffer 53 is clamped in the sampling extension section 42.

[0161] Understandably, the buffer 53 is a structural component with a buffering function. The buffer 53 can be a buffer pad, buffer foam, etc. The number of buffers 53 can be multiple, and the placement position can be determined according to the thickness of the sampling extension section 42.

[0162] For example, there are two buffers 53, which are respectively disposed on the two opposite sides of the snap-fit ​​plate 521 and the connecting plate 511, so that when the snap-fit ​​plate 521 and the connecting plate 511 clamp the sampling extension 42, the buffers 53 can be clamped on the opposite sides of the sampling extension 42.

[0163] In this way, the buffer 53 reduces damage to the sampling extension 42.

[0164] Please refer to Figure 10 In some embodiments, the fastener 50 has a mounting surface 50a connected to the crossbeam 121, a rough surface 50b and a hook surface 50c both disposed opposite to the mounting surface 50a, and the sampling extension 42 is limited and fixed between the rough surface 50b and the hook surface 50c.

[0165] Understandably, in this embodiment, the fastener 50 is a Velcro structure, and the mounting surface 50a is the surface structure of the fastener 50 used to connect with the crossbeam 121. The mounting surface 50a can be connected to the crossbeam 121 by means of adhesive bonding, plugging, etc. The rough surface 50b and the hook surface 50c are both surface structures that are arranged opposite to the mounting surface 50a. Furthermore, the rough surface 50b and the hook surface 50c should also be located on the same surface of the fastener 50. When the fastener 50 is folded, the hook surface 50c faces the rough surface 50b and directly connects with the rough surface 50b, so that the sampling extension section 42 can be clamped between the rough surface 50b and the hook surface 50c.

[0166] By adopting the above technical solution, the hook surface 50c and the rough surface 50b are glued together to limit and fix the sampling extension section 42.

[0167] Please refer to Figure 11 In some embodiments, the fastener 50 has a first adhesive surface 50d connected to the crossbeam 121 and a second adhesive surface 50e disposed opposite to the first adhesive surface 50d, and the sampling extension 42 is limited and fixed on the second adhesive surface 50e.

[0168] Understandably, in this embodiment, the fastener 50 is a double-sided adhesive structure, and the first adhesive surface 50d and the second adhesive surface 50e are two opposing surfaces of the double-sided adhesive structure. The first adhesive surface 50d is used to connect the crossbeam 121, and the second adhesive surface 50e is used to connect the sampling extension section 42 for limiting and fixing it.

[0169] Please refer to Figures 4 to 9 In one specific embodiment, the battery device 100 includes a housing 10, a battery cell assembly, the battery device 100, a plurality of sampling elements 40, and a fixing element 50.

[0170] The housing 10 includes a top cover 11, on which a connector 13 is provided. The connector 13 is used for electrical connection with electrical equipment, and the insertion and removal direction of the connector 13 is parallel to the height direction of the housing 10. The battery cell assembly includes a plurality of battery cells 20 arranged side by side, each battery cell 20 being disposed within the housing 10. The electronic control device 30 is disposed within the housing 10 and is electrically connected to the connector 13. The sampling element 40 has a connection end 40a and a plurality of sampling ends 40b. The connection end 40a is electrically connected to the electronic control device 30. Each sampling end 40b is electrically connected to the corresponding battery cell 20. The fixing member 50 is disposed within the housing 10 and adjacent to the connection end 40a of the sampling element 40. The fixing member 50 is used to limit and fix at least one sampling element 40.

[0171] The connection end 40a includes a plug connector, and the electrical control device 30 is provided with an interface structure that is plugged into and connected to the plug connector.

[0172] The electronic control device 30 includes a battery monitoring module 31. The interface structure of the battery monitoring module 31 faces the battery cell 20, and a first gap is formed between the end of the battery monitoring module facing the top cover 11 and the inner surface of the top cover 11. In the height direction of the housing 10, the position of the interface structure on the battery monitoring module 31 is lower than the height of the end of the battery monitoring module 31 facing the top cover 11.

[0173] The sampling component 40 includes a sampling main section 41 and a sampling extension section 42 connected to the sampling main section 41. The sampling end 40b includes a sampling circuit board. The sampling main section 41 has multiple sampling circuit boards on opposite sides along its own length direction. The sampling main section 41 is placed on each battery cell 20. Each sampling circuit board is electrically connected to the corresponding battery cell 20. The end of the sampling extension section away from the sampling main section 41 is provided with a plug connector.

[0174] The housing 10 includes a base 12 with a receiving cavity. A crossbeam 121 is provided inside the base, which divides the receiving cavity into a first sub-cavity and a second sub-cavity. The electronic control device 30 is located in the first sub-cavity, and each battery cell 20 is located in the second sub-cavity. The sampling extension section 42 extends beyond the crossbeam 121, and a fixing member 50 is provided on the crossbeam 121. The fixing member 50 includes a connecting part 51 connected to the crossbeam 121 and a limiting part 52 provided on the connecting part 51. The limiting part 52 is used to limit and fix the sampling extension section 42. The connecting part 51 includes a connecting plate 511 connected to the crossbeam 121. The connecting plate 511 is provided with a plug-in member 512 for connecting the crossbeam 121. The limiting part 52 includes a snap-fit ​​plate 521 with one end hinged to the connecting plate 511 and a snap-fit ​​arm 522 provided on the connecting plate 511. The end of the snap-fit ​​plate 521 away from the connecting plate 511 is snap-fitted to the snap-fit ​​arm 522. Furthermore, a buffer member 53 is provided between the snap-fit ​​plate 521 and the connecting plate 511. The buffer member 53 is clamped in the sampling extension section 42.

[0175] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A battery device, characterized in that, include: The enclosure includes a top cover, on which a connector is provided. The connector is used for electrical connection with electrical equipment, and the insertion and removal direction of the connector is parallel to the height direction of the enclosure. A battery cell assembly, comprising a plurality of battery cells arranged side by side, each battery cell being disposed within the housing; An electrical control device is located inside the housing and is electrically connected to the connector. Multiple sampling elements, each sampling element having a connection end and multiple sampling ends, the connection end being electrically connected to the electronic control device; Each of the sampling terminals is electrically connected to the corresponding battery cell; and A fixing member is disposed inside the housing and adjacent to the connecting end of the sampling member, and the fixing member is used to limit and fix at least one of the sampling members.

2. The battery device according to claim 1, characterized in that: The connection end includes a plug connector, and the electronic control device is provided with an interface structure that is plugged into and connected to the plug connector.

3. The battery device according to claim 2, characterized in that: The electronic control device includes a battery monitoring module, and the interface structure of the battery monitoring module faces the battery cell. The battery monitoring module forms a first gap between one end facing the top cover and the inner surface of the top cover.

4. The battery device according to claim 3, characterized in that: In the height direction of the housing, the interface structure on the battery monitoring module is positioned at a height lower than the end of the battery monitoring module facing the top cover.

5. The battery device according to any one of claims 2 to 4, characterized in that, The sampling device includes a sampling main section and a sampling extension section connected to the sampling main section. The sampling end includes a sampling circuit board. Multiple sampling circuit boards are provided on opposite sides of the sampling main section along its own length direction. The sampling main section is placed on each of the battery cells, and each sampling circuit board is electrically connected to the corresponding battery cell. The sampling extension section is provided with the plug-in connector at the end away from the sampling main section.

6. The battery device according to claim 5, characterized in that, The extension direction of the sampling extension of at least one of the sampling elements corresponds to the position of the interface structure on the electronic control device.

7. The battery device according to claim 5, characterized in that, The sampling extension of at least one of the sampling elements is limited and fixed to the fixing element.

8. The battery device according to claim 7, characterized in that, The sampling extension section is in a folded state, and the fastener limits and fixes the folded sampling extension section.

9. The battery device according to claim 8, characterized in that: The housing includes a base with a receiving cavity, and a crossbeam is provided in the base to divide the receiving cavity into a first sub-cavity and a second sub-cavity. The electronic control device is located in the first sub-cavity, and each of the battery cells is located in the second sub-cavity. The sampling extension extends beyond the crossbeam, and the fixing member is located on the crossbeam.

10. The battery device according to claim 9, characterized in that: The crossbeam forms a second gap between its end facing the top cover and the inner surface of the top cover.

11. The battery device according to claim 9, characterized in that: The fastener includes a connecting portion connected to the crossbeam and a limiting portion provided on the connecting portion, the limiting portion being used to limit and fix the sampling extension section.

12. The battery device according to claim 11, characterized in that: The connecting part includes a connecting plate connected to the crossbeam, and the connecting plate is provided with a plug for connecting the crossbeam.

13. The battery device according to claim 12, characterized in that: The limiting part includes a snap-fit ​​plate with one end hinged to the connecting plate and a snap-fit ​​arm disposed on the connecting plate, wherein the end of the snap-fit ​​plate away from the connecting plate is snap-fitted to the snap-fit ​​arm.

14. The battery device according to claim 13, characterized in that: A buffer is provided between the snap-fit ​​plate and the connecting plate, and the buffer is clamped in the sampling extension section.

15. The battery device according to claim 9, characterized in that: The fastener has a mounting surface connected to the crossbeam, a rough surface and a hook surface both facing away from the mounting surface, and the sampling extension is limited and fixed between the rough surface and the hook surface.

16. The battery device according to claim 9, characterized in that: The fastener has a first adhesive surface connected to the crossbeam and a second adhesive surface opposite to the first adhesive surface, and the sampling extension is limited and fixed on the second adhesive surface.

17. An electrical appliance, characterized in that: Includes the battery device as described in any one of claims 1 to 16.

Images