Battery device and electric equipment

Abstract

The utility model relates to a battery device and electric equipment. The battery device comprises a box body, a battery monomer assembly and a limiting piece, the box body comprises a bearing piece and two first beams, and the two first beams are oppositely arranged in the first direction. The battery monomer assembly comprises a plurality of battery monomers arranged in the first direction, the battery monomer assembly is borne by the bearing part and located between the two first beams, and the two first beams abut against the battery monomer assembly. The two ends, in the first direction, of the limiting piece are connected with the two first beams correspondingly, and the limiting piece is located on the side, away from the bearing piece, of the battery monomer assembly in the second direction. Wherein the limiting piece is made of a non-metal material. And the reliability of the battery device under complex working conditions such as external vibration or impact can be improved by utilizing the limiting piece.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to battery devices and electrical equipment. Background Technology

[0002] In recent years, the emergence of new energy vehicles has played a huge role in promoting social development and environmental protection. Batteries, as the power source of new energy vehicles, are widely used in the field of new energy vehicles.

[0003] In the development of battery technology, how to improve battery reliability is a technical problem that urgently needs to be solved. Utility Model Content

[0004] Therefore, it is necessary to provide a battery device and electrical equipment that can improve the reliability of the battery device in response to the above technical problems.

[0005] According to a first aspect of this application, a battery device is provided, including a housing, a battery cell assembly, and a limiting member. The housing includes a support member and two first beams, which are disposed opposite to each other along a first direction. The battery cell assembly includes a plurality of battery cells arranged along the first direction, the battery cell assembly is supported by the support member and located between the two first beams, both of which abut against the battery cell assembly. The limiting member is connected to the two first beams at both ends along the first direction, and is located on the side of the battery cell assembly opposite to the support member along a second direction, abutting against the battery cell assembly; the second direction is perpendicular to the first direction; wherein the limiting member is made of a non-metallic material.

[0006] In the technical solution of this application, the limiting member is connected to the first beam of the housing and abuts against the battery cell assembly to position the battery cell assembly within the housing. The limiting member can also hold the first beam, thereby improving the first beam's resistance to expansion and enhancing the overall integrity and main frequency of the battery device, thus improving the reliability of the battery device under complex working conditions such as external vibration or impact. Furthermore, since the limiting member is made of non-metallic materials, and non-metallic materials have better insulation properties than metallic materials, insulation abnormalities caused by contact between the limiting member and the battery cell can be reduced, thereby increasing the service life of the battery device. Moreover, non-metallic materials have higher corrosion resistance, thus reducing the need for additional anti-corrosion treatment processes, thereby increasing the service life of the limiting member and reducing the cost of the battery device.

[0007] In one embodiment, the limiting member includes a limiting portion and two connecting portions. The limiting portion abuts against the battery cell assembly along a second direction; along a first direction, the two connecting portions are located at opposite ends of the limiting portion; the battery device also includes a connector that passes through the connecting portions and the first beam to connect the limiting member and the first beam.

[0008] The two connecting parts are respectively connected to the first beam of the housing, which helps to improve the connection reliability between the limiting component and the housing, thereby better improving the expansion resistance of the first beam and enhancing the overall integrity and main frequency of the battery device, thus improving the reliability of the battery device under complex working conditions such as external vibration or impact.

[0009] In one embodiment, the connecting portion has a first connecting hole extending through the connecting portion in a second direction, and the connector passes through the first connecting hole; the battery device also includes a reinforcing member; the hardness of the reinforcing member is greater than the hardness of the limiting member; at least a portion of the reinforcing member is located within the first connecting hole, and at least a portion of the reinforcing member is sandwiched between the hole wall of the first connecting hole and the connector. Since at least a portion of the reinforcing member is sandwiched between the hole wall of the first connecting hole and the connector, the structural strength of the connecting portion and the limiting member can be effectively improved, thereby increasing the firmness of the limiting member connected to the first beam of the housing and reducing the occurrence of pull-out and peeling failures; the reinforcing member can also distribute the load, reducing the probability of stress concentration at the connection between the connecting portion and the housing; the reinforcing member can also improve the durability and vibration resistance of the limiting member.

[0010] In some embodiments, the reinforcing member is interference-fitted into the first connecting hole.

[0011] The reinforcing member protects the wall of the first connecting hole, reducing stress concentration at the weaker points of the hole wall and facilitating repeated assembly and disassembly of the limiting member. Furthermore, because the reinforcing member is interference-fitted into the corresponding first connecting hole, the probability of it detaching from the hole is reduced. Adding a reinforcing member at the weaker points of the first connecting hole wall effectively improves the structural strength of the limiting member and prevents delamination as seen in adhesive-bonded solutions during vibration and impact, thus enhancing the connection strength between the reinforcing member and the hole wall.

[0012] In some embodiments, a second connecting hole is provided through the reinforcing member along the second direction, and a notch is provided on the reinforcing member that communicates with the second connecting hole. The notch is provided through the reinforcing member along the second direction.

[0013] Because the notch penetrates the reinforcing member, the reinforcing member with the notch has a certain degree of elasticity, making it easy to be interference-fitted into the first connecting hole on the connecting part.

[0014] In some embodiments, the material of the reinforcing member includes a metallic material.

[0015] Compared to metal pressure strips, the limiting member of this application is made of non-metallic material, which helps to reduce the weight of the battery device. Combined with the reinforcing member made of metallic material, the structural strength of the limiting member can be improved by using the reinforcing member, thereby improving the connection between the limiting member and the housing while also reducing the weight of the battery device.

[0016] In some embodiments, the first beam includes a beam body and a connecting seat. The beam body is connected to a load-bearing member and has a cavity. The connecting seat is connected to the beam body, and the connecting member is connected to the first beam through the connecting seat.

[0017] Because the main body of the first beam has a cavity, the main body of the beam can absorb the expansion force generated when the battery cell expands, and the connecting seat and the limiting member can be connected through the connecting member, so that the limiting member can hold the first beam, thereby improving the reliability of the battery device under complex working conditions such as external vibration or impact.

[0018] In some embodiments, the connecting seat includes a seat body and a reinforcement member. The seat body is connected to the main beam body, the reinforcement member is connected to the seat body, the hardness of the reinforcement member is greater than the hardness of the seat body, and the connecting member is connected to the reinforcement member.

[0019] The strength of the base can be increased by reinforcing components, thereby improving the connection between the limiting component and the housing.

[0020] In some embodiments, the connector is threaded to reinforce the connection.

[0021] This facilitates the disassembly and installation of the connecting seat and the limiting component.

[0022] In some embodiments, along the second direction, a portion of the connecting seat protrudes from the side of the beam body opposite to the load-bearing member. The thickness of the connecting portion along the second direction is less than the thickness of the limiting portion along the second direction, and the connecting portion abuts against the connecting seat.

[0023] Since the connecting seat protrudes from one end of the beam body and abuts against the limiting member, the connecting seat can be used to support the limiting member, thereby improving the connection reliability between the limiting member and the connecting seat.

[0024] In some embodiments, a plurality of battery cell assemblies are provided, including a first battery cell assembly and a second battery cell assembly disposed adjacent to each other along a third direction; a portion of a limiting member abuts against a battery cell in the first battery cell assembly, and another portion of the limiting member abuts against a battery cell in the second battery cell assembly; the third direction is perpendicular to the first direction and the second direction.

[0025] In this way, on the one hand, the limiting member can abut against the battery cells of the two adjacent battery cell modules respectively, and on the other hand, the limiting member can be used to hold the first beam, thereby improving the reliability of the battery device under complex working conditions such as external vibration or impact, while also positioning multiple battery cell modules in the box.

[0026] According to a second aspect of this application, an electrical device is provided, including the battery device of any of the above embodiments.

[0027] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0028] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0029] Figure 1 A schematic diagram of the structure of a vehicle according to an embodiment of this application is shown.

[0030] Figure 2 A top view of a partial structure of a battery device according to an embodiment of this application is shown.

[0031] Figure 3 It shows Figure 2 An enlarged schematic diagram of point A.

[0032] Figure 4 A partial structural schematic diagram of a battery device according to an embodiment of this application is shown.

[0033] Figure 5 A schematic diagram of the limiting member and the reinforcing member according to an embodiment of this application is shown.

[0034] Figure 6 It shows Figure 5 An enlarged schematic diagram of point B.

[0035] Figure 7 A cross-sectional view of point A of a battery device according to an embodiment of this application is shown.

[0036] Figure 8 A schematic diagram of the structure of a box according to an embodiment of this application is shown.

[0037] Figure 9 It shows Figure 8 An enlarged schematic diagram of point C.

[0038] Reference numerals: 1. Vehicle; 10. Battery assembly; 100. Housing; 110. Bearing component; 120. First beam; 121. Beam body; 122. Connecting seat; 1221. Seat body; 1222. Reinforcing component; 123. Mounting groove; 130. Welding material; 140. Second beam; 200. Battery cell assembly; 210. Battery cell; 300. Limiting component; 310. Connecting part; 320. Limiting part; 330. Rib; 400. Connecting component; 410. Head; 420. Threaded section; 500. Reinforcing component; Q. Receiving cavity; Q1. Receiving sub-cavity; K1. First connecting hole; K2. Second connecting hole; K3. Third connecting hole; K4. Notch; 20. Motor; 30. Controller. Detailed Implementation

[0039] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0040] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0041] Furthermore, where the terms "first" and "second" appear, these terms are 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 with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0042] In this application, unless otherwise expressly 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0043] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0044] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0045] In related technologies, the pressure strip is glued to the top of the battery cell using adhesive bonding, which results in poor battery reliability. Therefore, how to improve battery reliability is a technical problem that urgently needs to be solved in battery technology.

[0046] To improve battery reliability, this application designs a battery device and electrical equipment that can use a limiting member to position the battery cell in the housing, and the limiting member is connected to the first beam, thereby improving the reliability of the battery device.

[0047] The battery device disclosed in this application can be used, but is not limited to, in electrical devices such as vehicles, ships, or aircraft. These electrical devices can be, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, and spacecraft. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft. The power system of this electrical device can be constructed using the battery device disclosed in this application, which facilitates providing power to the device and extends its service life.

[0048] Figure 1 This illustration shows a structural diagram of a vehicle 1 according to an embodiment of this application. Vehicle 1 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 10 is installed inside vehicle 1. For example, the battery device 10 can be installed at the bottom, front, or rear of vehicle 1. The battery device 10 can be used to power vehicle 1. For example, the battery device 10 can serve as the operating power source for vehicle 1's electrical system, such as meeting the power requirements for starting, navigation, and operation of vehicle 1. In another embodiment of this application, the battery device 10 can not only serve as the operating power source for vehicle 1 but also as the driving power source for vehicle 1, replacing or partially replacing gasoline or natural gas to provide driving force for vehicle 1.

[0049] The interior of vehicle 1 may also be equipped with a motor 20 and a controller 30. The controller 30 is used to control the power supply of the battery device 10 to the motor 20, for example, for the power needs of vehicle 1 during starting, navigation and driving.

[0050] Figure 2 A top view of a partial structure of a battery device 10 according to an embodiment of this application is shown. Figure 3 It shows Figure 2 An enlarged diagram of point A. Figure 4 A partial structural schematic diagram of a battery device 10 according to an embodiment of this application is shown.

[0051] Please refer to the following: Figures 2-4 One embodiment of this application provides a battery device 10, including a housing 100, a battery cell assembly 200, and a limiting member 300.

[0052] The housing 100 has a receiving cavity Q, in which the battery cell assembly 200 is disposed. The housing 100 refers to the component on the battery device 10 used to receive the battery cell assembly 200.

[0053] The cavity Q refers to the cavity on the housing 100 used to house the battery cell assembly 200.

[0054] The receiving cavity Q has an opening on one side, and the battery assembly 10 may also include a cover (not shown in the figure), which is connected to the end of the housing 100 with the opening to close the opening. Alternatively, the cover may be detachably connected to the end of the housing 100 with the opening. After placing components such as the battery cell assembly 200 into the receiving cavity Q, the cover can be connected to the end of the housing 100 with the opening to close the opening. In this way, the housing 100 and the cover can effectively protect components such as the battery cell assembly 200.

[0055] The housing 100 includes a support member 110 and two first beams 120, which are arranged opposite each other along a first direction F1. The support member 110 and the two first beams 120 define a receiving cavity Q.

[0056] The support component 110 refers to the part on the housing 100 used to support the battery cell assembly 200.

[0057] The first beam 120 refers to a component on the housing 100 used to limit the battery cell assembly 200 along the first direction F1. The first beam 120 is used to limit the expansion of the battery cell assembly 200. As an example, the first beam 120 can be a beam structure disposed within the receiving cavity Q of the housing 100, or it can be a beam structure used to enclose the receiving cavity Q. For example, the first beam 120 can be a side beam of the housing 100.

[0058] The battery cell assembly 200 includes a plurality of battery cells 210 arranged along a first direction F1. The battery cell assembly 200 is supported by a support member 110 and is located between two first beams 120, both of which abut against the battery cell assembly 200.

[0059] The limiting member 300 is connected to the two first beams 120 at both ends along the first direction F1, and the limiting member 300 is located on the side of the battery cell assembly 200 away from the support member 110 along the second direction F2, and the limiting member 300 abuts against the battery cell assembly 200; the second direction F2 is perpendicular to the first direction F1. The material of the limiting member 300 includes non-metallic materials.

[0060] The limiting member 300 can be extended longitudinally along the first direction F1, and the limiting member 300 abuts against all the battery cells 210 of the battery cell assembly 200. The first direction F1 can be the longitudinal extension direction of the limiting member 300.

[0061] The limiting member 300 is at least partially located outside the receiving cavity Q. The limiting member 300 is connected to the housing 100 and abuts against the battery cell 210, and is used to position the battery cell 210 inside the receiving cavity Q.

[0062] It is possible that the entire limiting member 300 is located outside the receiving cavity Q; or it is possible that a part of the limiting member 300 is located outside the receiving cavity Q, and another part of the limiting member 300 is located inside the receiving cavity Q; no specific restrictions are made here.

[0063] The limiting member 300 refers to the component on the battery device 10 that is used to connect to the first beam 120 of the housing 100 and to position the battery cell assembly 200 within the receiving cavity Q.

[0064] The limiting member 300 can be directly connected to the first beam 120 of the box body 100, or it can be indirectly connected to the first beam 120 of the box body 100. No specific restrictions are made here.

[0065] For example, the first direction F1 is parallel to the length direction of the box 100, and the second direction F2 is parallel to the gravity direction of the box 100.

[0066] The limiting member 300 includes a connecting portion 310, and the battery device 10 also includes a connecting member 400, which passes through the connecting portion 310 and the first beam 120 to connect the limiting member 300 and the first beam 120. The connecting portion 310 has a first connecting hole K1 that extends through the connecting portion 310 along the second direction F2, and the connecting member 400 passes through the first connecting hole K1. The battery device 10 also includes a reinforcing member 500. The hardness of the reinforcing member 500 is greater than that of the limiting member 300. At least a portion of the reinforcing member 500 is located within the first connecting hole K1, and at least a portion of the reinforcing member 500 is sandwiched between the hole wall of the first connecting hole K1 and the connecting member 400.

[0067] In the technical solution of this application, the limiting member 300 is connected to the first beam 120 of the housing 100 and abuts against the battery cell assembly 200 to position the battery cell assembly 200 within the receiving cavity Q of the housing 100. The limiting member 300 can hold the first beam 120, thereby improving the expansion resistance of the first beam 120 and enhancing the overall integrity and main frequency of the battery device 10, thus improving the reliability of the battery device 10 under complex working conditions such as external vibration or impact. In addition, since the material of the limiting member 300 includes non-metallic materials, and non-metallic materials have better insulation than metallic materials, insulation abnormalities caused by contact between the limiting member 300 and the battery cell 210 can be reduced, thereby improving the service life of the battery device 10. Furthermore, non-metallic materials have higher corrosion resistance, thus reducing additional anti-corrosion treatment processes, thereby improving the service life of the limiting member 300 and reducing the cost of the battery device 10.

[0068] The reinforcing member 500 refers to a component provided on the corresponding connecting part 310 on the battery device 10 and used to increase the strength of the connecting part 310.

[0069] Since at least a portion of the reinforcing member 500 is sandwiched between the hole wall of the first connecting hole K1 and the connecting member 400, the structural strength of the connecting part 310 and the limiting member 300 can be effectively improved, thereby increasing the firmness of the limiting member 300 connected to the first beam 120 of the box body 100 and reducing the occurrence of pull-out and peeling failures; the reinforcing member 500 can also distribute the load and reduce the probability of stress concentration at the connection between the connecting part 310 and the box body 100; the reinforcing member 500 can also improve the durability and vibration resistance of the limiting member 300.

[0070] In some embodiments, the limiting member 300 directly abuts against the battery cell 210.

[0071] In this embodiment, the limiting member 300 is not bonded to the battery cell 210. Therefore, compared to bonding the limiting member 300 to the battery cell 210 by pressure bonding, the limiting member 300 in this application is connected to the housing 100, which can save the pressure bonding tooling, save the pressure bonding verification time, and reduce the cost of a large amount of glue, thereby reducing the cost of the battery device 10 and improving the assembly efficiency of the limiting member 300.

[0072] In some embodiments, the limiting member 300 is detachably connected to the first beam 120 of the housing 100.

[0073] The limiting member 300 can be directly and detachably connected to the first beam 120 of the box body 100, or indirectly and detachably connected to the first beam 120 of the box body 100, without specific restrictions here.

[0074] For example, the limiting member 300 is connected to the first beam 120 of the housing 100 by the following reinforcement 500, which can be bolted to the first beam 120 of the housing 100, so that the limiting member 300 is bolted to the first beam 120 of the housing 100.

[0075] The limiting member 300 can be easily installed, disassembled, or replaced as needed. In addition, since the weight of the adhesive is greater than that of the bolt, the battery device 10 of this application is also optimized in terms of weight reduction compared to bonding the limiting member 300 to the battery cell 210 by adhesive.

[0076] In some embodiments, the limiting member 300 is located outside the receiving cavity Q and extends along the limiting member 300 from one side of the receiving cavity Q to the other side of the receiving cavity Q.

[0077] It is understandable that the limiting element 300 spans the receiving cavity Q.

[0078] Compared to designs using metal end plates or steel strips, this application uses a limiting member 300 to position the battery cell 210 within the receiving cavity Q, and the limiting member 300 is located outside the receiving cavity Q. Therefore, the internal space of the housing 100 can be freed up, allowing for the design of a larger capacity battery device 10, and the internal layout of the housing 100 can also be optimized, thereby improving the energy density of the battery device 10.

[0079] In some embodiments, please refer to Figure 3 , Figure 5 and Figure 6 The limiting member 300 includes a limiting part 320 and two connecting parts 310. The limiting part 320 abuts against the battery cell assembly 200 along the second direction F2 and along the first direction F1. The two connecting parts 310 are located at opposite ends of the limiting part 320.

[0080] The limiting part 320 refers to the part of the limiting member 300 that abuts against the battery cell assembly 200.

[0081] The connecting part 310 refers to the part of the limiting member 300 that is connected to the first beam 120 of the box body 100.

[0082] The two connecting parts 310 are respectively connected to the first beam 120 of the housing 100, which helps to improve the connection reliability between the limiting member 300 and the housing 100, thereby improving the expansion resistance of the first beam 120 and enhancing the overall integrity and main frequency of the battery device 10, thereby improving the reliability of the battery device 10 under complex working conditions such as external vibration or impact.

[0083] In some embodiments, the limiting member 300 further includes at least one rib 330 disposed on the limiting portion 320.

[0084] For example, in the second direction F2, the limiting part 320 is provided with two ribs 330 on the side away from the battery cell 210, and the reinforcing member 500 described below is located between the two ribs 330.

[0085] The strength of the limiting member 300 can be increased by using the reinforcing rib 330, thereby improving the reliability of the connection between the limiting member 300 and the housing 100.

[0086] In some embodiments, the battery device 10 may include two reinforcing members 500 corresponding to the two connecting portions 310. The reinforcing members 500 are disposed on the corresponding connecting portions 310, and the connecting portions 310 are connected to the corresponding first beam 120 through the corresponding reinforcing members 500.

[0087] In some embodiments, the reinforcing member 500 is interference-fitted into the first connecting hole K1.

[0088] The reinforcing member 500 protects the wall of the first connecting hole K1, reducing stress concentration at the weaker section of the first connecting hole K1 wall, and facilitating repeated assembly and disassembly of the limiting member 300. Furthermore, since the reinforcing member 500 is interference-fitted into the corresponding first connecting hole K1, the probability of the reinforcing member 500 detaching from the first connecting hole K1 is reduced. Adding the reinforcing member 500 at the weaker section of the first connecting hole K1 wall effectively improves the structural strength of the limiting member 300, and prevents delamination as seen in adhesive-bonded systems during vibration and impact, thereby enhancing the connection strength between the reinforcing member 500 and the wall of the first connecting hole K1.

[0089] In some embodiments, the reinforcement 500 is elastic.

[0090] The reinforcement 500 is arranged in an interference fit within the corresponding first connecting hole K1, which reduces the probability that the reinforcement 500 will detach from the first connecting hole K1.

[0091] In some embodiments, such as Figure 6 As shown, in the second direction F2, a second connecting hole K2 is provided through the reinforcing member 500, such as... Figure 7 As shown, the first beam 120 of the housing 100 is provided with a third connecting hole K3 corresponding to the second connecting hole K2. The connector 400 passes through the second connecting hole K2 and is connected to the hole wall of the third connecting hole K3 so as to detachably connect the reinforcing member 500 to the housing 100.

[0092] Along the axial direction of the second connecting hole K2, the reinforcing member 500 is confined within the first connecting hole K1.

[0093] The second connecting hole K2 refers to the hole on the reinforcing member 500 used to connect with the first beam 120 of the housing 100. The second connecting hole K2 can be a threaded hole or a pin hole.

[0094] The third connecting hole K3 refers to the hole on the first beam 120 of the housing 100 used to connect with the reinforcing member 500. The third connecting hole K3 can be a threaded hole or a pin hole.

[0095] The reinforcing member 500 can be connected to the housing 100 via the connector 400, which is adapted to the second connecting hole K2 and the third connecting hole K3 respectively.

[0096] During assembly, simply align the second connecting hole K2 of the reinforcing member 500 with the third connecting hole K3 on the housing 100, and then connect the reinforcing member 500 to the housing 100 using the connecting members 400 that are adapted to the second connecting hole K2 and the third connecting hole K3 respectively. The process is simple, the holes are easy to align, and the assembly efficiency is greatly improved.

[0097] In some embodiments, the connector 400 is a bolt, and the second connecting hole K2 and the third connecting hole K3 are threaded holes adapted to the bolt.

[0098] like Figure 7 As shown, the connector 400 may include a connected head 410 and a threaded section 420. The threaded section 420 of the connector 400 passes through the second connecting hole K2 and is threaded to the wall of the third connecting hole K3. Along the axial direction of the second connecting hole K2, the reinforcing member 500 is limited between the head 410 of the connector 400 and the connecting seat 122, so as to limit the reinforcing member 500 to be within the first connecting hole K1 along the axial direction of the first connecting hole K1.

[0099] Compared to bonding the limiting member 300 to the battery cell 210 by pressure bonding (which is prone to delamination during vibration and shock testing), this application uses bolt fastening, which is more secure and reliable and will not experience delamination during vibration and shock testing.

[0100] In some embodiments, in the second direction F2, a second connecting hole K2 is provided through the reinforcing member 500, and a notch K4 communicating with the second connecting hole K2 is provided on the reinforcing member 500. The notch K4 is provided through the reinforcing member 500 along the second direction F2.

[0101] It is understandable that the cross-section of the reinforcing member 500 is C-shaped.

[0102] Since the notch K4 is provided through the reinforcing member 500, the reinforcing member 500 with the notch K4 has a certain elasticity, which makes it easy to be provided in the first connecting hole K1 on the connecting part 310 with an interference fit.

[0103] In some embodiments, the material of the reinforcing member 500 includes a metallic material.

[0104] Compared to metal pressure strips, the limiting member 300 of this application is made of non-metallic material, which helps to reduce the weight of the battery device 10. Combined with the reinforcing member 500, which is made of metallic material, the reinforcing member 500 can be used to improve the structural strength of the limiting member 300, thereby improving the connection between the limiting member 300 and the housing 100 while also reducing the weight of the battery device 10.

[0105] In some embodiments, such as Figure 8 and Figure 9 As shown, the first beam 120 includes a beam body 121 and a connecting seat 122. The beam body 121 is connected to the load-bearing member 110 and has a cavity. The connecting seat 122 is connected to the beam body 121, and the connecting member 400 is connected to the first beam 120 through the connecting seat 122.

[0106] The main beam 121 refers to the main part of the first beam 120 that is used to connect with the load-bearing member 110.

[0107] Connecting seat 122 refers to the seat on the first beam 120 used to connect with the connecting member 400.

[0108] The connecting seat 122 can be welded to the beam body 121. For example, the beam body 121 is provided with an installation groove 123, and a weld 130 is provided between the groove wall of the installation groove 123 and the connecting seat 122, so that the connecting seat 122 and the beam body 121 are connected by the weld 130.

[0109] Since the main body 121 of the first beam 120 has a cavity, the main body 121 can absorb the expansion force generated when the battery cell 210 expands, and the connecting seat 122 can be connected to the limiting member 300 through the connecting member 400, so that the limiting member 300 can hold the first beam 120, thereby improving the reliability of the battery device 10 under complex working conditions such as external vibration or impact.

[0110] In some embodiments, the connecting seat 122 includes a seat body 1221 and a reinforcing member 1222. The seat body 1221 is connected to the beam body 121, and the reinforcing member 1222 is connected to the seat body 1221. The hardness of the reinforcing member 1222 is greater than the hardness of the seat body 1221. The connecting member 400 connects to the reinforcing member 1222.

[0111] The seat 1221 refers to the part of the connecting seat 122 that is connected to the main beam 121.

[0112] The reinforcement 1222 refers to the part on the connector 122 used to increase the strength of the seat 1221.

[0113] The third connecting hole K3 is provided through the reinforcing member 1222, so that the reinforcing member 500 and the first beam 120 of the box body 100 can be connected by the connecting member 400.

[0114] Mounting holes can be made in the base 1221, and the reinforcing member 1222 can be connected to the wall of the mounting hole in the base 1221.

[0115] The strength of the base 1221 can be increased by the reinforcing member 1222, reducing stress concentration at the hole wall of the mounting hole of the base 1221, thereby improving the connection between the limiting member 300 and the housing 100.

[0116] In some embodiments, connector 400 is threaded to reinforce member 1222.

[0117] For example, a mounting hole can be made in the base 1221, and the reinforcement 1222 can be threaded to the wall of the mounting hole in the base 1221.

[0118] For example, reinforcement 1222 may be a wire threaded sleeve.

[0119] This facilitates the disassembly and installation of the connecting seat 122 and the limiting member 300.

[0120] In some embodiments, along the second direction F2, a portion of the connecting seat 122 protrudes from the side of the beam body 121 facing away from the bearing member 110. The thickness of the connecting portion 310 along the second direction F2 is less than the thickness of the limiting portion 320 along the second direction F2, and the connecting portion 310 abuts against the connecting seat 122.

[0121] Since the end of the connecting seat 122 protrudes from the beam body 121 and abuts against the limiting member 300, the connecting seat 122 can be used to support the limiting member 300, thereby improving the connection reliability between the limiting member 300 and the connecting seat 122.

[0122] In some embodiments, a plurality of battery cell assemblies 200 are provided, and the plurality of battery cell assemblies 200 include a first battery cell assembly and a second battery cell assembly disposed adjacent to each other along a third direction. A portion of a limiting member 300 abuts against a battery cell 210 in the first battery cell assembly, and another portion of the limiting member 300 abuts against a battery cell 210 in the second battery cell assembly; the third direction F3 is perpendicular to the first direction F1 and the second direction F2.

[0123] For example, the first direction F1 is the length direction of the box 100, the second direction F2 is the gravity direction of the box 100, and the third direction F3 is the width direction of the box 100.

[0124] Thus, on the one hand, the limiting member 300 can abut against the battery cells 210 of the two adjacent sets of battery cell assemblies 200 respectively, and on the other hand, the limiting member 300 can hold the first beam 120, thereby improving the reliability of the battery device 10 under complex working conditions such as external vibration or impact, while also positioning multiple sets of battery cell assemblies 200 inside the housing 100.

[0125] In some embodiments, the battery device 10 includes a plurality of limiting members 300 spaced apart along a third direction F3, and the battery device 10 includes a plurality of battery cell assemblies 200 corresponding to the plurality of limiting members 300, wherein the limiting members 300 abut against the battery cells 210 of the corresponding battery cell assembly 200.

[0126] Alternatively, the limiting member 300 may abut against all the battery cells 210 of the corresponding battery cell assembly 200.

[0127] In this way, the limiting member 300 positions the battery cell 210 of the corresponding battery cell assembly 200 within the receiving cavity Q of the housing 100, and the multiple limiting members 300 can better hold the first beam 120, thereby greatly improving the reliability of the battery device 10 under complex working conditions such as external vibration or impact.

[0128] In some embodiments, the battery cell 210 includes a terminal post (not shown in the figure), and one side of the battery cell 210 has a first region and a second region adjacent to the first region; the terminal post is disposed in the first region; and the limiting member 300 abuts against the second region of the battery cell 210.

[0129] The first zone refers to the area where a terminal post is located on one side of the battery cell 210.

[0130] The second zone refers to the area adjacent to the first zone on the side of the battery cell 210 where the terminal post is located.

[0131] It is understandable that, compared to the first zone, the second zone does not have a terminal post and is flatter. Combined with the fact that the limiting member 300 abuts against the second zone of the battery cell 210, the contact area between the limiting member 300 and the battery cell 210 can be increased. Thus, the limiting member 300 can be used to more reliably position the battery cell 210 in the receiving cavity Q of the housing 100.

[0132] In some embodiments, the non-metallic material includes a matrix material and a reinforcing material.

[0133] In some embodiments, the non-metallic material is a fiber-reinforced composite material, the matrix material is plastic, resin or rubber, etc., and the reinforcing material is a high-strength fiber, such as glass fiber, carbon fiber or boron fiber.

[0134] It is understood that the non-metallic material in this application is a composite material, which has advantages such as high specific strength, good corrosion resistance, and good insulation. Compared with the disadvantage of traditional steel strips being prone to corrosion, the composite material in this application has good corrosion resistance and good insulation, which can reduce the insulation abnormality caused by the contact between the limiting member 300 and the battery cell 210, and can also effectively buffer vibration, protect the battery cell 210, and improve the safety and service life of the battery device 10.

[0135] In some embodiments, the housing 100 further includes a second beam 140 disposed within the receiving cavity Q along a first direction F1. The second beam 140 is located between two first beams 120 and divides the receiving cavity Q into two receiving sub-cavities Q1, and also divides the plurality of battery cells 210 of the battery cell assembly 200 into two groups.

[0136] In some embodiments, the limiting member 300 is connected to the first beam 120 of the housing 100 by bolts.

[0137] Compared to the pressure bonding method, this application uses a bolt-locking method that is more secure and reliable. It avoids the delamination issues that occur with pressure bonding during vibration and impact. Furthermore, the battery device 10 of this application is optimized for weight reduction, eliminates the need for pressure bonding tooling, saves pressure bonding verification time, and improves the assembly efficiency of the limiting component 300. Since non-metallic materials have higher corrosion resistance than metallic materials, additional anti-corrosion treatment processes can be reduced, and the service life of the limiting component 300 can be increased. Moreover, the good insulation properties of non-metallic materials can reduce insulation abnormalities caused by contact between the limiting component 300 and the battery cell 210, thereby increasing the service life of the battery device 10 and reducing its cost.

[0138] This application also provides an electrical device including the battery device 10 of any of the above embodiments.

[0139] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0140] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A battery device, characterized in that, include: The box body (100) includes a load-bearing member (110) and two first beams (120), the two first beams (120) being arranged opposite each other along a first direction; A battery cell assembly (200) includes a plurality of battery cells (210) arranged along a first direction. The battery cell assembly (200) is supported by the support member (110) and located between two first beams (120). Both first beams (120) abut against the battery cell assembly (200). and A limiting member (300) is provided, wherein both ends of the limiting member (300) along the first direction are respectively connected to the two first beams (120), and the limiting member (300) is located on the side of the battery cell assembly (200) away from the support member (110) along the second direction, and the limiting member (300) abuts against the battery cell assembly (200); the second direction is perpendicular to the first direction; The material of the limiting member (300) includes non-metallic materials; The limiting member (300) includes a connecting portion (310); the battery device further includes a connecting member (400), which passes through the connecting portion (310) and the first beam (120) to connect the limiting member (300) and the first beam (120). The connecting part (310) has a first connecting hole (K1) that passes through the connecting part (310) in the second direction, and the connector (400) passes through the first connecting hole (K1). The battery device further includes a reinforcing member (500); the hardness of the reinforcing member (500) is greater than the hardness of the limiting member (300); At least a portion of the reinforcing member (500) is located within the first connecting hole (K1), and at least a portion of the reinforcing member (500) is sandwiched between the hole wall of the first connecting hole (K1) and the connecting member (400).

2. The battery device according to claim 1, characterized in that, The limiting member (300) includes: A limiting portion (320) abuts against the battery cell assembly (200) along the second direction; and The two connecting portions (310) are located at opposite ends of the limiting portion (320) along the first direction.

3. The battery device according to claim 2, characterized in that, The limiting member (300) further includes at least one rib (330) disposed on the limiting part (320).

4. The battery device according to claim 3, characterized in that, The reinforcing member (500) is interference-fitted into the first connecting hole (K1).

5. The battery device according to claim 3 or 4, characterized in that, Along the second direction, the reinforcing member (500) is provided with a second connecting hole (K2). The reinforcing member (500) is provided with a notch (K4) that communicates with the second connecting hole (K2); Along the second direction, the notch (K4) is provided through the reinforcement (500).

6. The battery device according to claim 3, characterized in that, The reinforcing member (500) is made of metallic materials.

7. The battery device according to any one of claims 2-4, characterized in that, The first beam (120) includes a beam body (121) and a connecting seat (122); The beam body (121) is connected to the bearing member (110), and the beam body (121) has a cavity. The connecting seat (122) is connected to the beam body (121), and the connecting member (400) is connected to the first beam (120) through the connecting seat (122).

8. The battery device according to claim 7, characterized in that, The connector (122) includes: The seat (1221) connects to the main beam (121); and A reinforcing member (1222) is connected to the seat (1221), the hardness of the reinforcing member (1222) is greater than the hardness of the seat (1221), and the connecting member (400) is connected to the reinforcing member (1222).

9. The battery device according to claim 8, characterized in that, The connector (400) is threadedly connected to the reinforcement (1222).

10. The battery device according to claim 7, characterized in that, Along the second direction, a portion of the connecting seat (122) protrudes from the side of the beam body (121) facing away from the bearing member (110); The thickness of the connecting portion (310) along the second direction is less than the thickness of the limiting portion (320) along the second direction, and the connecting portion (310) abuts against the connecting seat (122).

11. The battery device according to any one of claims 1-4, characterized in that, The battery cell assembly (200) is provided in multiple ways, and the multiple battery cell assemblies (200) include a first battery cell assembly and a second battery cell assembly arranged adjacent to each other along a third direction; a portion of a limiting member (300) abuts against the battery cell (210) in the first battery cell assembly, and another portion of the limiting member (300) abuts against the battery cell (210) in the second battery cell assembly; the third direction is perpendicular to the first direction and the second direction.

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

Images