Battery device and electric equipment

Abstract

The utility model discloses a battery device and electric equipment, and relates to the technical field of battery devices. The battery device comprises a battery monomer, a limiting assembly and a plurality of insulating partition plates, a plurality of single batteries are arranged, and the plurality of single batteries are stacked along a first direction. The limiting assembly comprises two side plates oppositely arranged in the second direction and two end plates oppositely arranged in the first direction, and an included angle is formed between the second direction and the first direction. And each battery monomer is arranged in a space formed by enclosing the two side plates and the two end plates. The insulating partition plates comprise first partition plates and second partition plates, the first partition plates are clamped between the end plates and the battery monomers, and the second partition plates are clamped between the side plates and the battery monomers. According to the technical scheme, the risk of mutual electric connection between the limiting assembly and the battery monomers is reduced.

Description

Technical Field

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

[0002] Multiple battery cells in a battery device are typically fixed in place by metal limiting components surrounding their perimeter. After the product has finished operating, due to the temperature difference between the product and the surrounding environment, condensation will occur on the metal limiting components and on the electrode terminals of the battery cells inside the battery device. When there is a lot of condensation, the metal limiting components will short-circuit with the battery cells through the condensation, which can easily lead to insulation abnormalities in the product. Utility Model Content

[0003] The main objective of this application is to provide a battery device and an electrical appliance that aims to improve the electrical connection between the limiting components of the battery device and the individual battery cells.

[0004] To achieve the above objectives, the battery device proposed in this application includes a battery cell, a limiting assembly, and several insulating separators. Multiple battery cells are stacked along a first direction. The limiting assembly includes two side plates arranged opposite each other along a second direction and two end plates arranged opposite each other along the first direction, the second direction forming an angle with the first direction. Each battery cell is disposed within a space enclosed by the two side plates and the two end plates. The insulating separators include a first separator and a second separator, the first separator being sandwiched between the end plates and the battery cell, and the second separator being sandwiched between the side plates and the battery cell.

[0005] This application's technical solution increases the capacity of the battery device by stacking multiple battery cells along a first direction. The limiting assembly includes two side plates arranged opposite each other along a second direction and two end plates arranged opposite each other along the first direction. The battery cells are disposed within the space enclosed by the two side plates and the two end plates, which achieves both the integrity of multiple series- or parallel-connected battery cells and further protection for the battery cells. By sandwiching the first insulating partition between the end plate and the battery cell, and the second insulating partition between the side plate and the battery cell, at least two surfaces of the limiting assembly can be isolated by the insulating partition, thereby reducing the risk of short-circuiting between the limiting assembly and the battery cell through condensation.

[0006] In one embodiment of this application, the battery cell is provided with electrode terminals. At least one of the first separator and the second separator is provided with a blocking rib to prevent at least one of the end plate and the side plate from contacting the electrode terminals.

[0007] This design increases the flow path of condensation on the limiting component when it enters the location of the battery cell, making it more difficult for condensation to enter the location of the battery cell and reducing the risk of short circuit between the limiting component and the battery cell.

[0008] In one embodiment of this application, at least two electrode terminals are spaced apart along the second direction on each of the battery cells; the blocking ribs are disposed on the first separator and extend along the second direction.

[0009] This design allows the blocking ribs to simultaneously isolate at least two electrode terminals from the end plate of the limiting assembly, thereby reducing the risk of short circuit between the limiting assembly and the battery cell caused by condensation on the limiting assembly coming into contact with condensation on the electrode terminals of the battery cell.

[0010] In one embodiment of this application, the second partition plate is provided with at least two flow-guiding ribs, and a flow-guiding channel is formed between the at least two flow-guiding ribs. The side plate is provided with a flow-guiding outlet, one end of the flow-guiding channel faces the electrode terminal, and the other end faces the side plate and communicates with the flow-guiding outlet.

[0011] This design allows condensation on the electrode terminals of the battery cell to fall into the flow channel and flow from the flow channel to the flow outlet, and then be discharged from the flow outlet outside the limiting component, thereby reducing the accumulation of condensation in the space surrounded by the limiting component and thus reducing the risk of insulation failure of the battery device.

[0012] In one embodiment of this application, the side plate includes a rectangular plate body, and the flow outlet is located at the corner of the rectangular plate body.

[0013] This design reduces the space occupied by the flow outlet in the area of ​​the side panel directly opposite the battery cell, thereby improving the space utilization of the side panel.

[0014] In one embodiment of this application, the side of the flow guiding rib away from the electrode terminal is a guide slope, the side of the guide slope away from the electrode terminal abuts against the side plate, and a flow guiding gap is formed between the side of the guide slope near the electrode terminal and the side plate, and the flow guiding channel is connected to the flow guiding outlet through the flow guiding gap.

[0015] This design ensures that the condensation in each guide channel can flow through the guide gap to the guide outlet, thereby guaranteeing a good discharge effect of the condensation and reducing the number of guide outlets required.

[0016] In one embodiment of this application, a sealing strip assembly is further sandwiched between the second partition and the side plate.

[0017] This design further enhances the sealing between the side plate and the second separator, thereby reducing the risk of external condensation entering the battery cell through the second separator.

[0018] In one embodiment of this application, the sealing strip assembly includes a first sealing strip and a second sealing strip, the first sealing strip being sandwiched between the second partition and the side plate. The extension direction of the second sealing strip is set at an angle to the extension direction of the first sealing strip, and is sandwiched between the second partition and the side plate.

[0019] This configuration allows the first and second sealing strips to seal the insulating separator in two different directions, thereby further improving the sealing between the insulating separator and the limiting component, reducing the risk of external condensation flowing into the battery cell through the insulating separator, and further reducing the risk of electrical connection between the limiting component of the battery cell assembly and the battery cell.

[0020] In one embodiment of this application, an insulating partition is further provided between two adjacent battery cells.

[0021] This configuration reduces the risk of short-circuiting between two battery cells due to condensation.

[0022] In one embodiment of this application, the first partition is provided with an air-cooling channel, and the side plate is provided with a connecting port, which connects to the air-cooling channel.

[0023] This design allows external cold air to pass through the connection port and the air-cooling channel to dissipate heat from the battery cells near the insulating separator, reducing the risk of thermal runaway and improving the lifespan of the battery device.

[0024] In one embodiment of this application, the inner wall edge of the communication port is provided with a rounded corner structure, and the inner wall of the communication port is provided with an insulating layer.

[0025] This design reduces the risk of scratches to users and allows for increased wall thickness of the insulating layer when applying insulating varnish, thereby improving insulation performance and reducing the risk of short circuits between the varnish and battery cells.

[0026] This application also proposes an electrical device including the aforementioned battery device. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, 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 the structures shown in these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the vehicle structure according to some embodiments of this application;

[0029] Figure 2 This is an exploded view of the battery device according to some embodiments of this application;

[0030] Figure 3 This is an exploded structural diagram of a battery cell according to some embodiments of this application;

[0031] Figure 4 This is a three-dimensional structural diagram of a battery device according to some embodiments of this application;

[0032] Figure 5 for Figure 4 A magnified view of a section at point A in the middle;

[0033] Figure 6 This is a partial schematic diagram of the exploded structure of a battery device according to some embodiments of this application;

[0034] Figure 7 This is a three-dimensional structural diagram of the insulating separator in a battery device according to some embodiments of this application;

[0035] Figure 8 This is a three-dimensional structural diagram of the side plate in the battery device of some embodiments of this application;

[0036] Figure 9 for Figure 8 A magnified view of a section at point B in the middle;

[0037] Figure 10 This is a front view of a battery device according to some embodiments of this application;

[0038] Figure 11 for Figure 10 Sectional view of CC;

[0039] Figure 12 for Figure 11 A magnified view of a section at point D.

[0040] Explanation of icon numbers:

[0041] 1000, vehicles;

[0042] 100. Battery assembly; 200. Controller; 300. Motor;

[0043] 100A, enclosure;

[0044] 100B, battery cell assembly;

[0045] 10. Limiting component; 11. Side plate; 11a. Connecting port; 12. End plate; 10a. Flow outlet;

[0046] 20. Battery cell; 21. End cap; 21a. Electrode terminal; 22. Housing; 23. Electrode assembly; 23a. Tab;

[0047] 30. Insulating partition; 31. First partition; 311. Blocking rib; 32. Second partition; 321. Guide rib; 322. Guide slope; 32a. Guide channel; 30a. Guide gap; 30b. Air-cooled flow channel;

[0048] 40. Sealing strip assembly; 41. First sealing strip; 42. Second sealing strip.

[0049] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0050] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0051] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0052] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0053] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0054] This application provides an electrical device that uses a battery as a power source. The electrical device can be, but is 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.

[0055] 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.

[0056] Please refer to Figure 1 , Figure 1This 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.

[0057] 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.

[0058] Please refer to Figure 2 The battery device 100 includes a housing 100A and a battery cell 20, with the battery cell 20 housed within the housing 100A. The housing 100A provides a space for the battery cell 20 and can have various structures. In some embodiments, the housing 100A may include a first part and a second part, which overlap each other, jointly defining a space for accommodating the battery cell 20. The second part may be a hollow structure with one open end, while the first part may be a plate-like structure, with the first part covering the open side of the second part so that the first and second parts jointly define the space. Alternatively, both the first and second parts may be hollow structures with one open side, with the open side of the first part covering the open side of the second part. Of course, the housing 100A formed by the first and second parts can have various shapes, such as a cylinder or a cuboid.

[0059] Each battery cell 20 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited to these. The battery cell 20 can be cylindrical, flat, cuboid, or other shapes.

[0060] Please refer to Figure 3 , Figure 2 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 that makes up a battery device. For example... Figure 3 The battery cell 20 includes an end cap 21, a housing 22, an electrode assembly 23, and other functional components.

[0061] 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 safety performance. Functional components such as electrode terminals 21a can be provided on end cap 21. Electrode terminals 21a can be used for electrical connection with electrode assembly 23 to output or input 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 copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this application embodiment does not impose any special limitations on this. 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.

[0062] 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 can be used to close 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 material of the housing 22 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. This application embodiment does not impose any special limitations on this.

[0063] Electrode assembly 23 is the component in the battery cell 20 where the electrochemical reaction occurs. 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 23a. 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 device 100, the positive and negative active materials react with the electrolyte, and the tabs 23a connect to the electrode terminals to form a current loop.

[0064] In the battery device 100, there can be multiple battery cells 20. These multiple battery cells 20 can be connected in series, parallel, or in a mixed configuration. A mixed configuration means that multiple battery cells 20 are connected in both series and parallel connections. Multiple battery cells 20 can be directly connected in series, parallel, or in a mixed configuration, and then the entire assembly of these multiple battery cells 20 is housed within the casing 100A. (For further details, please refer to...) Figure 2 The battery device 100 can also consist of multiple battery cells 20 connected in series, parallel, or in a mixed configuration to form a battery cell assembly 100B, which is then connected in series, parallel, or in a mixed configuration to form a whole and housed within a housing 100A. The battery device 100 may also include other structures; for example, it may include a busbar component for electrical connection between the multiple battery cells 20.

[0065] A battery cell assembly 100B typically includes multiple battery cells 20 and limiting components surrounding the multiple battery cells 20. These limiting components are typically made of metal. When a battery device includes the battery cell assembly 100B, the device generates a significant amount of heat during operation. After operation, if the ambient humidity is high and there is a large temperature difference between the device and its surroundings, condensation can easily form on the limiting components. Excessive condensation can pose a risk of short-circuiting the limiting components to the electrode terminals of the battery cells 20 or to the battery cells 20 themselves.

[0066] To improve the issue of the limiting component of battery cell module 100B being electrically connected to battery cell 20 via condensation, please refer to the following: Figures 4 to 7This application proposes a battery device 100, which includes a battery cell 20, a limiting assembly 10, and a plurality of insulating separators 30. Multiple battery cells 20 are stacked along a first direction. The limiting assembly 10 includes two side plates 11 arranged opposite each other along a second direction and two end plates 12 arranged opposite each other along the first direction, with the second direction forming an angle with the first direction. The battery cells 20 are disposed within the space enclosed by the two side plates 11 and the two end plates 12. The insulating separators 30 include a first separator 31 and a second separator 32. The first separator 31 is sandwiched between the end plates 12 and the battery cells 20, and the second separator 32 is sandwiched between the side plates 11 and the battery cells 20.

[0067] The limiting component 10 provides a receiving space for the battery cell 20. The limiting component 10 may include a first housing and a second housing, which overlap each other, collectively defining a receiving space for accommodating the battery cell 20. Alternatively, the limiting component 10 includes side plates 11 disposed opposite each other in a second direction and end plates 12 disposed opposite each other in a first direction. The end plates 12 and side plates 11 together form a cylindrical structure that circumferentially limits the battery cell 20. To ensure good sealing of the limiting component 10, it may also include a top plate and a bottom plate, which are disposed opposite each other and both connected to the side plates 11 and the end plates 12. The limiting component 10 may be a cylinder or a cuboid, etc.

[0068] Side plate 11 refers to a plate that can simultaneously limit the movement of multiple battery cells 20 arranged in a certain direction, that is, the extension direction of side plate 11 is along the arrangement direction of battery cells 20. The arrangement direction of two side plates 11 can be perpendicular to the arrangement direction of battery cells 20, or it can form other angles with the arrangement direction of battery cells 20. Side plate 11 can be a flat plate or a curved plate.

[0069] End plates 12 refer to plate structures spaced apart along the arrangement direction of the battery cells 20, i.e., plates located outside the battery cells 20 at both ends. That is, when the battery cells 20 are arranged along the first direction, the two end plates 12 are also arranged opposite each other along the first direction. End plates 12 can be flat or curved. When end plates 12 are connected to side plates 11, they can be integrated, or the connection can be achieved through threaded connections, snap-fit ​​connections, or other methods.

[0070] The insulating partition 30 refers to an insulating plate that isolates the limiting component 10 from the battery cell 20. This insulating plate can be flat or curved; alternatively, the insulating partition 30 may include a flat plate and a flanged structure at the edge of the flat plate. To achieve insulation, the insulating partition 30 can be made of a non-metallic material. Alternatively, the insulating partition 30 may include a metal layer and an insulating layer surrounding the metal layer.

[0071] The first separator 31 refers to the plate structure used to isolate the end plate 12 from the battery cell 20. The first separator 31 can be a flat plate or a curved plate. The first separator 31 can be made of non-metallic material or it can be a plate structure with an insulating layer on the outside of a metal plate.

[0072] The second separator 32 refers to the plate structure used to isolate the side plate 11 from the battery cell 20. The second separator 32 can be a flat plate or a curved plate. The second separator 32 can be made of non-metallic material or a plate structure with an insulating layer on the outside of a metal plate. The first separator 31 and the second separator 32 can be connected by connectors, and can be an integral structure or can abut against each other.

[0073] The technical solution of this application increases the capacity of the battery device by stacking multiple battery cells 20 along a first direction. The limiting component 10 includes two side plates 11 arranged opposite each other along a second direction and two end plates 12 arranged opposite each other along the first direction. The battery cells 20 are disposed within the space enclosed by the two side plates 11 and the two end plates 12. This achieves both the integrity of multiple series- or parallel-connected battery cells 20 and further protection for the battery cells 20. By sandwiching the first partition 31 of the insulating partition 30 between the end plate 12 and the battery cell 20, and the second partition 32 between the side plates 11 and the battery cell 20, at least two surfaces of the limiting component 10 can be isolated by the insulating partition 30, thereby reducing the risk of short-circuiting between the limiting component 10 and the battery cell 20 due to condensation.

[0074] Please refer to the reference. Figures 4 to 7 In one embodiment of this application, the battery cell 20 is provided with electrode terminals; at least one of the first separator 31 and the second separator 32 is provided with a blocking rib 311 to block at least one of the end plate 12 and the side plate 11 from the electrode terminal 21a.

[0075] The blocking rib 311 refers to a raised rib disposed on the insulating separator 30 to isolate the electrode terminals from the limiting assembly 10. Taking the upward-facing electrode terminals of the battery cell 20 as an example, since the electrode terminals 21a and their surrounding areas of the battery cell 20 are the main locations for condensation, the blocking rib 311 can be disposed on the top of the insulating separator 30. This allows the blocking rib 311 to block condensation on the battery cell 20 from condensing on the limiting assembly 10, thereby reducing the risk of electrical connection between the battery cell 20 and the limiting assembly 10. Furthermore, this arrangement results in a longer path for condensation on the limiting assembly 10 to flow to the battery cell 20, further reducing the risk of electrical connection between the battery cell 20 and the limiting assembly 10 via condensation. Specifically, the blocking rib 311 can be integrally formed with the insulating separator 30, or it can be connected by means of insertion, snap-fit ​​connection, or welding. The side of the blocking rib 311 facing the limiting assembly 10 can be flat or curved. Similarly, the side of the blocking rib 311 facing the battery cell 20 can be a plane or a curved surface.

[0076] When the limiting component 10 includes an end plate 12 and a side plate 11 arranged at an angle, the blocking rib 311 may be provided only on the first partition 31, that is, between the end plate 12 and the battery cell 20; or it may be provided only on the second partition 32, that is, between the side plate 11 and the battery cell 20; or it may be provided on both the first partition 31 and the second partition 32, that is, between the end plate 12 and the battery cell 20 and between the side plate 11 and the battery cell 20.

[0077] By providing a blocking rib 311 to at least one of the first partition 31 and the second partition 32, the blocking rib 311 is used to block one of the end plate 12 and the side plate 11 from the electrode terminal 21a, thereby isolating the condensation on the electrode terminal 21a from the condensation on the end plate 12 and / or the side plate 11, thus reducing the risk of electrical connection between the battery cell 20 and the limiting assembly 10. In addition, the setting of the blocking rib 311 also increases the flow path of condensation on the limiting assembly 10 when it enters the location of the battery cell 20, making it difficult for condensation to enter the location of the battery cell 20, thus reducing the risk of short circuit between the limiting assembly 10 and the battery cell 20.

[0078] Please refer to the reference. Figures 4 to 7 In one embodiment of this application, at least two electrode terminals 21a are provided on each battery cell 20 at intervals along the second direction; a blocking rib 311 is provided on the first partition 31 and extends along the second direction.

[0079] Specifically, in one example, when the limiting component 10 includes two end plates 12 and two side plates 11 arranged opposite to each other, the two side plates 11 are arranged opposite to each other along a second direction, and the two end plates 12 are arranged opposite to each other along a first direction. At least two battery cells 20 can be arranged in the arrangement direction of the two end plates 12. Then the arrangement direction of the electrode terminals 21a of the two battery cells 20 is along the opposite direction of the two side plates 11. At this time, the second direction is the arrangement direction of the side plates 11.

[0080] At least two electrode terminals 21a are spaced apart along the second direction, and the blocking rib 311 is provided on the first partition 31 and extends along the second direction, so that the blocking rib 311 can simultaneously isolate at least two electrode terminals 21a from the end plate 12 of the limiting component 10, thereby reducing the risk of short circuit between the limiting component 10 and the battery cell 20 due to the condensation on the limiting component 10 coming into contact with the condensation on the electrode terminals 21a of the battery cell 20.

[0081] Please refer to the reference. Figures 4 to 7 In one embodiment of this application, the second partition 32 is provided with at least two flow guiding ribs 321, and a flow guiding channel 32a is formed between the at least two flow guiding ribs 321. The side plate 11 is provided with a flow guiding outlet 10a, one end of the flow guiding channel 32a faces the electrode terminal 21a, and the other end faces the side plate 11 and is connected to the flow guiding outlet 10a.

[0082] The guide rib 321 refers to a rib that guides condensation. By providing at least two guide ribs 321, a guide channel 32a is formed between two adjacent guide ribs 321, thereby facilitating the collection of condensation flowing down from the electrode terminal 21a. The guide rib 321 can be straight or curved in the direction toward the electrode terminal 21a. Specifically, the side plate 11 may include a main body portion located at the end of the guide rib 321 away from the battery cell 20, or the side plate 11 may include the main body portion and a flange structure connected to the main body portion, the flange structure abutting against the guide rib 321, so that the guide rib 321 can isolate the limiting component 10 from the electrode terminal 21a. Specifically, the extending direction of the guide rib 321 can be parallel to the second direction or at an angle to the second direction.

[0083] The flow outlet 10a is an outlet that communicates with the flow channel 32a and drains the condensation within the flow channel 32a out of the limiting component 10. The flow outlet 10a can be circular, rectangular, or other shapes. It can be located at a corner of the side plate 11, or at other locations besides the corner, such as the center of the bottom of the side plate 11, as long as the condensation within the flow channel 32a can flow out of the limiting component 10 through the flow outlet 10a. For example, in one example, if the limiting component 10 does not have a large opening, the flow outlet 10a can be located at a corner of the limiting component 10; or, in another example, if the limiting component 10 has a large opening, the flow outlet 10a can be positioned directly opposite the end of each flow channel 32a furthest from the electrode terminal 21a, thereby improving the efficiency of condensation discharge from the limiting component 10.

[0084] By providing at least two flow-guiding ribs 321 at the end of the second partition 32 near the electrode terminal 21a, and forming a flow-guiding channel 32a between the at least two flow-guiding ribs 321, with one end of the flow-guiding channel 32a facing the electrode terminal 21a and the other end facing the side plate 11 and connecting to the flow-guiding outlet 10a on the side plate 11, the condensation on the electrode terminal 21a of the battery cell 20 can fall into the flow-guiding channel 32a and flow from the flow-guiding channel 32a to the flow-guiding outlet 10a, and then be discharged from the flow-guiding outlet 10a to the outside of the limiting component 10, thereby reducing the accumulation of condensation in the space surrounded by the limiting component 10, and thus reducing the risk of insulation failure of the battery device 100.

[0085] Please refer to the reference. Figures 4 to 7 In one embodiment of this application, the extension direction of the guide rib 321 is parallel to the second direction.

[0086] By aligning the extension direction of the flow guide rib 321 parallel to the second direction, when the battery device 100 is placed on its side, i.e., with one side plate 11 of the battery device 100 positioned at the bottom, condensation on the electrode terminals 21a can flow quickly and unimpeded into the flow guide channel 32a. This improves the efficiency of draining condensation from the limiting assembly 10 and the battery cell 20 to the outside of the limiting assembly 10. Furthermore, this arrangement also isolates the limiting assembly 10 and the battery cell 20 from two directions, further reducing the risk of short-circuiting between the limiting assembly 10 and the battery cell 20 due to condensation.

[0087] Please refer to the reference. Figure 5 , Figure 6 , Figures 8 to 12 In one embodiment of this application, the side plate 11 includes a rectangular plate body, and the flow outlet 10a is located at the corner of the rectangular plate body.

[0088] When the limiting component 10 is a cuboid, it can be a cylindrical structure with at least one open end, or a closed cuboid structure. When the limiting component 10 is a cuboid, its side plate 11 includes a rectangular plate, and the flow outlet 10a is located at the corner of the rectangular plate, meaning it is located at the corner of the side plate 11. Of course, based on the option where the side plate 11 includes a rectangular plate, the side plate 11 can also include a flange structure connected to the edge of the rectangular plate, etc.

[0089] By placing the flow outlet 10a at the corner of the rectangular plate of the side plate 11, the space occupied by the flow outlet 10a in the area of ​​the side plate 11 facing the battery cell 20 can be reduced, thereby improving the space utilization of the side plate 11.

[0090] Please refer to the reference. Figures 7 to 12 Based on the scheme that the flow outlet 10a is located at the corner of the side plate 11, in one embodiment of this application, the side of the flow guide rib 321 away from the electrode terminal 21a is a guide slope 322. The side of the guide slope 322 away from the electrode terminal 21a abuts against the side plate 11. The side of the guide slope 322 near the electrode terminal 21a forms a flow guide gap 30a with the side plate 11. The flow guide channel 32a is connected to the flow outlet 10a through the flow guide gap 30a.

[0091] The guide slope 322 refers to the slope provided on the side of the guide rib 321 away from the electrode terminal 21a, used to guide the condensation to the surface near the guide outlet 10a. Taking the guide rib 321 provided on the top of the insulating partition 30, with one end of the guide rib 321 facing the electrode terminal 21a and the other end facing the side plate 11 as an example, in order to achieve the guiding effect, the upper side of the guide slope 322 is close to the electrode terminal 21a and there is a gap between it and the side plate 11, while the lower side of the guide slope 322 extends away from the electrode terminal 21a and can abut against the side plate 11, thereby reducing the risk that there is a gap between the lower side of the guide slope 322 and the side plate 11, causing the condensation to fall into the bottom of the side plate 11 through the gap and not flow out from the guide outlet 10a.

[0092] The flow guide gap 30a refers to the gap formed between the guide slope 322 and the side plate 11 for the flow of condensate. This flow guide gap 30a is used to connect multiple flow guide channels 32a, and to allow multiple flow guide channels 32a to connect with the flow guide outlet 10a through the flow guide gap 30a.

[0093] By setting the side of the guide rib 321 away from the electrode terminal 21a as a guide slope 322, the side of the guide slope 322 away from the electrode terminal 21a abuts against the side plate 11, and the side of the guide slope 322 near the electrode terminal 21a forms a guide gap 30a with the side plate 11. The guide channel 32a is connected to the guide outlet 10a through the guide gap 30a, so that the condensation in each guide channel 32a can flow through the guide gap 30a to the guide outlet 10a, thereby ensuring that the condensation has a good discharge effect, and at the same time reducing the number of guide outlets 10a.

[0094] Please refer to the reference. Figure 8 and Figure 9 In one embodiment of this application, a sealing strip assembly 40 is also sandwiched between the second partition 32 and the side plate 11.

[0095] The sealing strip assembly 40 is an assembly used to seal the side plate 11 and the second separator 32, thereby effectively isolating the battery cell 20 on the side of the second separator 32 opposite to the side plate 11 from the outside. The sealing strip assembly 40 may include sealing components made of foam, sealing rubber, or sealing strips. It is understood that when the sealing strip assembly 40 is made of foam, its porous structure can absorb some condensation on the side plate 11, further reducing the risk of condensation crossing the insulating separator 30 and contacting the battery cell 20.

[0096] The sealing strip assembly 40 may have at least two sealing strips, which may be arranged in parallel or crosswise. For example, when the sealing strip assembly 40 is provided on the side plate 11, it may include a sealing strip extending in a first direction, or it may include a sealing strip extending in a second direction. Alternatively, the sealing strip assembly 40 may include at least two sealing strips, which may be sealing strips extending in the first direction, or two sealing strips extending in the second direction, or one of them may extend in the first direction and the other in the second direction.

[0097] By further sandwiching a sealing strip assembly 40 between the second separator 32 and the side plate 11, the sealing between the second separator 32 and the side plate 11 can be further achieved, thereby reducing the risk of external condensation entering the battery cell 20 through the second separator 32.

[0098] Please refer to the reference. Figure 8 and Figure 9 In one embodiment of this application, the sealing strip assembly 40 includes a first sealing strip 41 and a second sealing strip 42. The first sealing strip 41 is sandwiched between the second partition 32 and the side plate 11. The extension direction of the second sealing strip 42 is set at an angle to the extension direction of the first sealing strip 41, and is sandwiched between the insulating second partition 32 and the side plate 11.

[0099] The first sealing strip 41 can extend along the second direction or in a direction perpendicular to the second direction. The extension direction of the second sealing strip 42 is set at an angle to the extension direction of the first sealing strip 41. For example, when the first sealing strip 41 extends along the first direction, that is, along the side of the side plate 11 near the end plate 12 to the side away from the end plate 12, the second sealing strip 42 can extend in a direction that is at an angle to both the second and first directions. The first sealing strip 41 can be adhered to the side plate 11 or snapped onto the side plate 11. Similarly, the second sealing strip 42 can be adhered to the side plate 11 or snapped onto the side plate 11.

[0100] When both the first sealing strip 41 and the second sealing strip 42 are provided on the side plate 11, there may be at least two first sealing strips 41 and at least two second sealing strips 42. The two first sealing strips 41 and the two second sealing strips 42 together form a closed space.

[0101] By sandwiching both the first sealing strip 41 and the second sealing strip 42 between the second partition 32 and the side plate 11, and setting the extension direction of the second sealing strip 42 at an angle to the extension direction of the first sealing strip 41, the first sealing strip 41 and the second sealing strip 42 can seal the insulating partition 30 in two different directions, thereby further improving the sealing performance between the insulating partition 30 and the limiting component 10, reducing the risk of external condensation flowing into the battery cell 20 through the insulating partition 30, and further reducing the risk of electrical connection between the limiting component 10 of the battery cell assembly 100B and the battery cell 20.

[0102] In other examples, to improve sealing, the sealing strip assembly 40 is not limited to including only the first sealing strip 41 and the second sealing strip 42. For example, other sealing strips or sealing blocks may be provided in the space enclosed by the first sealing strip 41 and the second sealing strip 42.

[0103] like Figure 5 As shown, in one embodiment of this application, an insulating partition 30 is also provided between two adjacent battery cells 20.

[0104] Specifically, when an insulating partition 30 is provided between two adjacent battery cells 20, the first partition 31 of the insulating partition 30 is used to isolate the two adjacent battery cells 20, thereby reducing the risk of short circuit between the two adjacent battery cells 20; the second partition 32 of the insulating partition 30 can be provided between the battery cell 20 and the side plate 11, and the second partitions 32 of two adjacent insulating partitions 30 can be spliced ​​side by side, thereby further reducing the risk of electrical connection between the battery cell 20 and the side plate 11 through condensation.

[0105] By providing an insulating partition 30 between two adjacent battery cells 20, the insulating partition 30 can also isolate the two adjacent battery cells 20 from each other, reducing the risk of short circuit between the two battery cells 20 due to condensation.

[0106] Please refer to the reference. Figures 6 to 9 In one embodiment of this application, the first partition 31 is provided with a cooling channel 30b, and the side plate 11 is provided with a connecting port 11a, which is connected to the cooling channel 30b.

[0107] The air-cooling channel 30b refers to the channel through which cooling air passes. This air-cooling channel 30b can be straight or curved. When an insulating partition 30 is provided between at least two battery cells 20, the extension direction of the air-cooling channel 30b on the first partition 31 of the insulating partition 30 can be a second direction or an angled arrangement with the second direction, allowing externally supplied cold air to enter the air-cooling channel 30b to dissipate heat from the adjacent two battery cells 20. Specifically, the air-cooling channel 30b can be a groove formed in the first partition 31, or it can be formed by two opposing ribs on the first partition 31, with the air-cooling channel 30b formed between the two opposing ribs.

[0108] The connecting opening 11a refers to an opening provided on the side plate 11 for communicating with the air-cooled flow channel 30b. The connecting opening 11a can be circular, rectangular, or other shapes. It is understood that in order for the air-cooled flow channel 30b on the first partition 31 to communicate with the connecting opening 11a on the side plate 11, the air-cooled flow channel 30b passes through the second partition 32, or the second partition 32, when connected to the first partition 31, can avoid the air-cooled flow channel 30b.

[0109] By providing a cooling channel 30b on the first partition 31 and connecting the cooling channel 30b to the connecting port 11a on the side plate 11, external cold air can pass through the connecting port 11a and the cooling channel 30b in sequence to dissipate heat from the battery cell 20 near the insulating partition 30, reducing the risk of thermal runaway and improving the service life of the battery device 100.

[0110] like Figure 9 As shown, in one embodiment of this application, the inner wall edge of the communication port 11a is provided with a rounded corner structure.

[0111] By providing a rounded corner structure on the inner wall edge of the connecting port 11a, the occurrence of sharp edges on the inner wall of the connecting port 11a can be reduced. This reduces the risk of scratching the user and also increases the thickness of the insulating varnish when it is applied, thereby improving the insulation effect.

[0112] Furthermore, the inner wall of the connecting port 11a is provided with an insulating layer.

[0113] The insulation layer can be an insulating film or an insulating varnish applied by spraying.

[0114] By providing an insulating layer on the inner wall of the connection port 11a, the insulation performance at this location can be improved, thereby reducing the risk of short circuit to the battery cell 20 due to condensation.

[0115] In one embodiment of this application, the insulating partition 30 further includes a base plate, which is connected to both the first partition 31 and the second partition 32, and the base plate is provided with supporting ribs.

[0116] By connecting the base plate to the first partition 31 and the second partition 32, the coverage of the insulating partition 30 on the battery cell 20 is increased, further reducing the risk of short circuit between the battery cell 20 and the limiting component 10.

[0117] By setting support ribs on the base plate, the support strength of the battery cell 20 can be improved.

[0118] This application also proposes an electrical appliance. For example... Figure 1 As shown, the electrical device includes a battery device 100. The specific structure of the battery device 100 is as described in the above embodiments. Since this electrical device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here. Specifically, the electrical device can be any of the aforementioned devices or systems that use the battery device 100.

[0119] The above are merely exemplary embodiments of this application and do not limit the patent scope of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A battery device, characterized in that, include: Multiple battery cells are stacked along a first direction; A limiting component includes two side plates arranged opposite each other along a second direction and two end plates arranged opposite each other along a first direction, wherein the second direction is at an angle to the first direction; each battery cell is disposed within the space enclosed by the two side plates and the two end plates. as well as A plurality of insulating separators, at least one of the insulating separators including a first separator and a second separator connected to each other, the first separator being sandwiched between the end plate and the battery cell, and the second separator being sandwiched between the side plate and the battery cell.

2. The battery device as claimed in claim 1, characterized in that, The battery cell is provided with electrode terminals; at least one of the first separator and the second separator is provided with a blocking rib to block at least one of the end plate and the side plate from contacting the electrode terminals.

3. The battery device as claimed in claim 2, characterized in that, At least two electrode terminals are provided on each of the battery cells at intervals along the second direction; The blocking rib is disposed on the first partition and extends along the second direction.

4. The battery device as claimed in claim 2, characterized in that, The second partition is provided with at least two flow-guiding ribs, and a flow-guiding channel is formed between the at least two flow-guiding ribs; The side plate is provided with a flow outlet. One end of the flow channel faces the electrode terminal, and the other end faces the side plate and is connected to the flow outlet.

5. The battery device as claimed in claim 4, characterized in that, The side plate includes a rectangular plate body, and the flow outlet is located at the corner of the rectangular plate body.

6. The battery device as claimed in claim 5, characterized in that, The side of the flow guide rib away from the electrode terminal is a guide slope; The side of the guide slope away from the electrode terminal abuts against the side plate, and a flow guiding gap is formed between the side of the guide slope near the electrode terminal and the side plate; The flow channel is connected to the flow outlet through the flow gap.

7. The battery device according to any one of claims 1 to 6, characterized in that, A sealing strip assembly is also sandwiched between the second partition and the side plate.

8. The battery device as claimed in claim 7, characterized in that, The sealing strip assembly includes: A first sealing strip, the first sealing strip being sandwiched between the second partition and the side plate; and The second sealing strip extends at an angle to the extension direction of the first sealing strip and is sandwiched between the second partition and the side plate.

9. The battery device according to any one of claims 1 to 6, characterized in that, An insulating partition is also provided between two adjacent battery cells.

10. The battery device according to any one of claims 1 to 6, characterized in that, The first partition is provided with an air-cooling channel, and the side plate is provided with a connecting port, which connects to the air-cooling channel.

11. The battery device as claimed in claim 10, characterized in that, The inner wall edge of the connecting port has a rounded corner structure, and the inner wall of the connecting port has an insulating layer.

12. An electrical appliance, characterized in that, Includes the battery device as described in any one of claims 1 to 11.

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