Battery pack and electric device

Abstract

The embodiment of the utility model relates to the technical field of batteries, and particularly discloses a battery pack and a power utilization device, and the battery pack comprises a box body which is provided with a containing cavity; the box cover is connected to one side of the box body in the second direction; the first battery pack comprises a plurality of first single batteries and a first output row; the second battery pack comprises a plurality of second single batteries and a second output row; the insulating part is arranged in the accommodating cavity and extends along the first direction, and the insulating part is arranged on one side of the second battery pack in the first direction; and the first electric connecting piece is electrically connected with the first output bar and the second output bar respectively, and the first electric connecting piece and the second output bar are fixedly connected with the insulating piece. According to the battery pack, the connecting part of the first electric connecting part and the second output row is fixedly supported by the insulating part, so that the connection stability between the first electric connecting part and the second output row is ensured, and the overall structural stability of the battery pack is further ensured.

Description

Technical Field

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

[0002] The replacement of traditional gasoline-powered vehicles with new energy vehicles is of great significance in improving the energy and pollution problems faced by the global transportation industry, and it is also an inevitable trend. With the rapid development of the new energy industry, battery packs with high capacity, long cycle life, and high safety performance have been widely used and developed. At the same time, the demand for battery packs with even larger capacity, greater durability, and enhanced safety is extremely urgent. Structural stability is one of the core performance characteristics of battery packs; therefore, how to improve the structural stability of battery packs has become a pressing issue that needs to be addressed. Utility Model Content

[0003] The embodiments of this application provide a battery pack and an electrical device to ensure the overall structural stability of the battery pack.

[0004] To address the aforementioned technical problems, embodiments of this application disclose the following technical solutions:

[0005] On one hand, a battery pack is provided, having a vertical first direction and a vertical second direction, including:

[0006] The box body is equipped with a receiving cavity;

[0007] The lid is attached to one side of the box body in the second direction;

[0008] The first battery pack includes: a plurality of first individual cells and a first output bar, wherein the plurality of first individual cells and the first output bar are disposed in a receiving cavity, and the first output bar is electrically connected to the plurality of first individual cells.

[0009] The second battery pack is located closer to the cover than the first battery pack. The second battery pack includes multiple second individual cells and a second output bar. The multiple second individual cells and the second output bar are both located in the receiving cavity, and the second output bar is electrically connected to the multiple second individual cells.

[0010] An insulating member, disposed within the receiving cavity and extending along a second direction, is also disposed on one side of the second battery pack in the first direction; and

[0011] The first electrical connector is electrically connected to the first output bar and the second output bar respectively, and both the first electrical connector and the second output bar are fixedly connected to the insulating member.

[0012] In addition to one or more of the features disclosed above, or as an alternative, the first electrical connector includes: a connecting body and a first electrical connection portion, wherein the first electrical connection portion is connected to the side of the connecting body near the insulating member along a first direction, and a portion of the connecting body extends along a second direction;

[0013] The first electrical connection part and the second output bar are electrically connected at the insulating member, and both the first electrical connection part and the second output bar are fixedly connected to the insulating member.

[0014] In addition to one or more of the features disclosed above, or alternatively, the battery pack also has a third direction, with the first direction, the second direction, and the third direction being perpendicular to each other;

[0015] The connection body includes: a first sub-connection part and a second sub-connection part. The first sub-connection part extends along a third direction, and the second sub-connection part extends along a second direction. The first sub-connection part is disposed on the side of the second sub-connection part in the second direction that is close to the first electrical connection part. The second sub-connection part is connected to the first electrical connection part through the first sub-connection part.

[0016] In addition to one or more of the features disclosed above, or as an alternative, a first fixing hole is provided on the second output bar, and a second fixing hole is provided on the first electrical connection portion;

[0017] The battery pack also includes a first locking member, which passes through a first fixing hole and a second fixing hole, and is fixedly connected to an insulating member to position and fix the second output outlet to the first electrical connection part.

[0018] In addition to one or more of the features disclosed above, or alternatively, the battery pack may further include: a first protective member and a second protective member, the first protective member covering the outer surface of the first electrical connection portion; and the second protective member covering the outer surface of the connection body.

[0019] In addition to one or more of the features disclosed above, or alternatively, the battery pack further includes: a second electrical connector disposed on the side of the first battery pack close to the first electrical connector in a first direction, and the second electrical connector being electrically connected to the first output outlet;

[0020] The first electrical connector further includes a second electrical connection portion disposed on the side of the second sub-connection portion near the second electrical connector, and the second electrical connection portion is electrically connected to the second electrical connector.

[0021] In addition to one or more of the features disclosed above, or as an alternative, the second electrical connector has a third fixing hole at one end near the second electrical connection portion, and the second electrical connection portion has a fourth fixing hole.

[0022] The battery pack also includes a second locking member, which passes through the third fixing hole and the fourth fixing hole to fix the second electrical connection part to the second electrical connector and to electrically connect the second electrical connection part to the second electrical connector.

[0023] In addition to one or more of the features disclosed above, or as an alternative, the housing includes: a bottom plate, a side beam, and a first support portion, wherein the side beam is arranged around the edge of the bottom plate, and the bottom plate and the side beam cooperate to enclose a receiving cavity, and the first support portion is protruding and connected to the side beam near the receiving cavity.

[0024] The battery pack also includes: a third protective component, which is fixedly connected to the first support portion; a second electrical connection portion and a second electrical connection component are both fixedly connected to the third protective component; the second electrical connection portion, the second electrical connection component, a portion of the third protective component, and the first support portion are stacked in the second direction to insulate the first support portion, the second electrical connection portion, and the second electrical connection component.

[0025] In addition to one or more of the features disclosed above, or as an alternative, the second battery pack further includes: a first support member, a plurality of second individual cells and an insulating member being disposed on the side of the first support member away from the base plate, and the first support member being connected to the first support portion;

[0026] The first support member has a clearance groove at the end near the insulator in the first direction, and the second electrical connector passes through the clearance groove.

[0027] On the other hand, a further electrical device is disclosed, which, in addition to one or more of the features disclosed above, or as an alternative, includes a battery pack as described in any of the preceding claims, the battery pack serving as a power source for the electrical device.

[0028] One of the above technical solutions has the following advantages or beneficial effects: By fixing both the first electrical connector and the second output bar to the insulating member, that is, by fixing the first electrical connector and the second output bar to the insulating member, the insulating member provides fixed support for the connection between the first electrical connector and the second output bar, which is beneficial to the connection stability between the first electrical connector and the second output bar, and thus helps to improve the overall structural stability of the battery pack; at the same time, it effectively reduces the connection failure between the first electrical connector and the second output bar, ensuring the normal use of the battery pack. Attached Figure Description

[0029] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0030] Figure 1 This is an exploded structural view of a battery pack according to an embodiment of this application;

[0031] Figure 2 This is a three-dimensional structural diagram of the battery pack hidden cover and part of the side beam provided in the embodiments of this application;

[0032] Figure 3 This is a three-dimensional structural diagram of the first battery pack, the second battery pack, and the side beam provided according to the embodiments of this application;

[0033] Figure 4 These are exploded structural diagrams of the first and second battery packs provided in the embodiments of this application;

[0034] Figure 5 This is a three-dimensional structural diagram of the insulating component, the first electrical connector, and the second electrical connector provided according to the embodiments of this application;

[0035] Figure 6 This is an exploded structural diagram of the insulating member, the first electrical connector, and the second electrical connector provided according to the embodiments of this application;

[0036] Figure 7 This is an exploded structural view of the insulating member, the first electrical connector, and the second electrical connector provided according to an embodiment of this application.

[0037] Figure 8 This is a structural schematic diagram of the box provided according to an embodiment of this application.

[0038] Explanation of reference numerals in the attached figures:

[0039] 100. Battery pack; 110. Housing; 111. Receiving cavity; 112. Base plate; 113. Side beam; 114. First support; 115. Second support; 120. First battery pack; 121. First single cell; 122. First output row; 123. Second support; 130. Second battery pack; 131. Second single cell; 132. Second output row; 1321. First fixing hole; 133. First support; 1331. Clearance groove; 140. Cover; 15. 0. Insulating component; 161. First electrical connector; 1611. Connecting body; 1612. First electrical connection part; 1613. Second electrical connection part; 1614. Second fixing hole; 1615. Fourth fixing hole; 1616. First sub-connection part; 1617. Second sub-connection part; 162. Second electrical connector; 1621. Third fixing hole; 171. First locking component; 172. Second locking component; 181. First protective component; 182. Second protective component; 183. Third protective component. Detailed Implementation

[0040] To make the objectives, technical solutions, and beneficial effects of this application clearer, the following detailed description, in conjunction with the accompanying drawings and specific embodiments, further illustrates this application. It should be understood that the specific embodiments described in this specification are merely for explaining this application and are not intended to limit it.

[0041] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0042] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0043] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] In existing battery packs, the output pins of multi-layer battery packs are electrically connected via busbars. Since there is no supporting and fixing structure at the connection between the output pins and the busbars, the structural stability between the output pins and the busbars is poor. When the battery pack vibrates or shakes, it is easy for the connection between the output pins and the busbars to be disconnected, or for the output pins or the busbars to be damaged. This can easily lead to connection failure between the output pins and the busbars, affecting the normal function of the battery pack.

[0045] To address the aforementioned problems, in the embodiments of this application, reference is made to... Figures 1 to 4 This application provides a battery pack 100, which has a first direction X, a second direction Z, and a third direction Y that are perpendicular to each other. Here, "perpendicular" means that the angle formed by the straight line and the straight line, the straight line and the plane, or the plane and the plane is 85° to 95°, that is, it means that it is completely perpendicular to each other at 90° or approximately perpendicular.

[0046] Specifically, the battery pack 100 includes: a housing 110, a first battery pack 120, a second battery pack 130, a housing cover 140, an insulating component 150, and a first electrical connector 161.

[0047] Specifically, refer to Figures 1 to 4The housing 110 is provided with a receiving cavity 111; the cover 140 is connected to one side of the housing 110 in the second direction Z to cover the receiving cavity 111 of the housing 110; the first battery pack 120 includes: a plurality of first individual batteries 121 and a first output row 122, all of which are disposed within the receiving cavity 111, and the first output row 122 is electrically connected to the plurality of first individual batteries 121, and the first output row 122 is either the overall output port or the overall input port of the first battery pack 120; the second battery pack 130 is disposed relative to the first battery pack 120 and close to the cover 140, and the second battery pack 130 includes: a plurality of second individual batteries 131 and a second output row 132, all of which are disposed within the receiving cavity 111, and the second output row 132 is disposed within the receiving cavity 111. The second battery pack 130 is electrically connected to multiple second individual battery cells 131. The second output port 132 is the overall output port or overall input port of the second battery pack 130. The insulating member 150 is disposed in the receiving cavity 111 and extends along the second direction Z. The insulating member 150 is disposed on one side of the second battery pack 130 in the first direction X. The first electrical connector 161 is electrically connected to the first output port 122 and the second output port 132 respectively. That is, the first electrical connector 161 connects the first output port 122 and the second output port 132 in series or in parallel. That is, the first electrical connector 161 connects the first battery pack 120 and the second battery pack 130 in series or in parallel. The first electrical connector 161 and the second output port 132 are both fixedly connected to the insulating member 150 so that the insulating member 150 provides fixed support for the connection between the first electrical connector 161 and the second output port 132.

[0048] The battery pack 100 can be a three-tiered battery pack 100 consisting of a single cell, a battery module, and a battery pack. Specifically, the first single cell 121 and the second single cell 131 are first grouped into a battery module, and then the battery module is placed inside the housing 110 to form the battery pack 100. Alternatively, it can be a two-tiered battery pack 100 consisting of a single cell and a battery pack, where the first single cell 121 and the second single cell 131 are directly housed inside the housing 110 to form the battery pack. No specific limitations are imposed in this application; the design can be tailored to the specific circumstances, as long as it does not affect the effectiveness of this application.

[0049] The enclosure 110 is made of ordinary steel or aluminum, but is not limited to these materials.

[0050] The lid 140 is made of metal, but is not limited to that.

[0051] Both the first single-cell battery 121 and the second single-cell battery 131 can be rechargeable batteries. A rechargeable battery is a single-cell battery that can be recharged after discharge to activate the active materials and continue to be used. For example, the first single-cell battery 121 and the second single-cell battery 131 can be lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-metal hydride batteries, or nickel-cadmium batteries, but are not limited to these.

[0052] The first single-cell battery 121 and the second single-cell battery 131 can be prismatic batteries, pouch batteries, or batteries of other shapes. For example, in this application, the first single-cell battery 121 and the second single-cell battery 131 are cylindrical batteries.

[0053] Both the first single-cell battery 121 and the second single-cell battery 131 include electrode assemblies, electrolyte, casing, end caps, terminals, and other functional components. The electrolyte can be a conventional electrolyte or a special electrolyte with additives, used to wet the electrode assemblies. The electrode assemblies are the components in the first single-cell battery 121 and the second single-cell battery 131 where electrochemical reactions occur, and there can be one or more electrode assemblies. The electrode assemblies are mainly formed by stacking or winding positive electrode sheets, separators, and negative electrode sheets. The portions of the positive and negative electrode sheets containing active material constitute the electrode body, while the portions of the positive and negative electrode sheets without active material each constitute a tab. During the charging and discharging process of the first single-cell battery 121 and the second single-cell battery 131, the positive and negative active materials react with the electrolyte, and the tabs and terminals are electrically connected to form a current loop, enabling the first single-cell battery 121 and the second single-cell battery 131 to function normally.

[0054] The first output bar 122 and the second output bar 132 can both be made of conductive metal or other materials, but are not limited thereto. For example, the first output bar 122 and the second output bar 132 can both be made of copper or aluminum, but are not limited thereto.

[0055] The first electrical connector 161 may be made of a conductive metal or other material, but is not limited thereto. For example, the first electrical connector 161 may be made of copper or aluminum, but is not limited thereto.

[0056] The insulating component 150 may be made of materials such as rubber, silicone or plastic, but is not limited to these.

[0057] Understandably, this application fixes both the first electrical connector 161 and the second output row 132 to the insulating member 150, that is, fixes the first electrical connector 161 and the second output row 132 at the insulating member 150. This allows the insulating member 150 to provide fixed support for the connection between the first electrical connector 161 and the second output row 132, which is beneficial to the connection stability between the first electrical connector 161 and the second output row 132, thereby improving the overall structural stability of the battery pack 100. At the same time, it effectively reduces the connection failure between the first electrical connector 161 and the second output row 132, ensuring the normal use of the battery pack 100.

[0058] In some embodiments, refer to Figures 5 to 6 The first electrical connector 161 includes a connecting body 1611 and a first electrical connection portion 1612. Along the first direction X, the first electrical connection portion 1612 is connected to the side of the connecting body 1611 near the insulating member 150, and a portion of the connecting body 1611 extends along the second direction Z. The first electrical connection portion 1612 is electrically connected to the second output bar 132 at the insulating member 150, and both the first electrical connection portion 1612 and the second output bar 132 are fixedly connected to the insulating member 150.

[0059] The connecting body 1611 and the first electrical connection part 1612 can be integrally formed, meaning they are a single structure. For example, the connecting body 1611 and the first electrical connection part 1612 can be integrally die-cast. Alternatively, the connecting body 1611 and the first electrical connection part 1612 can be separately arranged and fixedly connected. For example, the first electrical connection part 1612 can be fixedly connected to the connecting body 1611 by welding or other processes. This application does not impose specific limitations and can be configured according to actual circumstances. For example, in this application, the connecting body 1611 and the first electrical connection part 1612 are integrally formed.

[0060] This application electrically connects the first electrical connection portion 1612 and the second output row 132 at the insulating member 150, and both the first electrical connection portion 1612 and the second output row 132 are fixedly connected to the insulating member 150. This allows the insulating member 150 to provide fixed support for the connection between the first electrical connection portion 1612 and the second output row 132, which is beneficial to the connection stability between the first electrical connection portion 1612 and the second output row 132 and effectively avoids connection failure between the first electrical connection member 161 and the second output row 132. This ensures the overall structural stability of the battery pack 100 and its normal use. At the same time, in this application, part of the connecting body 1611 extends along the second direction Z to ensure that the connecting body 1611 makes full use of the space in the second direction Z within the housing 110, which has limited internal space. This allows for the electrical connection between the first battery pack 120 and the second battery pack 130 within a limited space, ensuring the rationality of the structural design between the components within the battery pack 100.

[0061] In some embodiments, refer to Figures 5 to 6 The connecting body 1611 includes: a first sub-connecting part 1616 and a second sub-connecting part 1617. The first sub-connecting part 1616 extends along a third direction Y, and the second sub-connecting part 1617 extends along a second direction Z. The first sub-connecting part 1616 is disposed on the side of the second sub-connecting part 1617 in the second direction Z that is close to the first electrical connecting part 1612. The second sub-connecting part 1617 is connected to the first electrical connecting part 1612 through the first sub-connecting part 1616.

[0062] The first sub-connecting portion 1616 and the second sub-connecting portion 1617 can be integrally formed, meaning they are a single, integrated structure. For example, the first sub-connecting portion 1616 and the second sub-connecting portion 1617 can be integrally die-cast. Alternatively, the first sub-connecting portion 1616 and the second sub-connecting portion 1617 can be separately configured and fixedly connected. For example, the second sub-connecting portion 1617 can be fixedly connected to the first sub-connecting portion 1616 through welding or other processes. This application does not impose specific limitations and can be configured according to actual circumstances. For example, in this application, the first sub-connecting portion 1616 and the second sub-connecting portion 1617 are integrally formed.

[0063] This application extends the first sub-connection portion 1616 along the third direction Y and the second sub-connection portion 1617 along the second direction Z. This ensures that the first sub-connection portion 1616 makes full use of the space in the third direction Y of the housing 110 when the internal space of the housing 110 is limited, and that the second sub-connection portion 1617 makes full use of the space in the second direction Z of the housing 110 when the internal space of the housing 110 is limited. This allows for the electrical connection between the first battery pack 120 and the second battery pack 130 within a limited space, ensuring the rationality of the structural design between the components in the battery pack 100.

[0064] In some embodiments, refer to Figures 5 to 6 The second output row 132 has a first fixing hole 1321 and the first electrical connection part 1612 has a second fixing hole 1614.

[0065] Specifically, the battery pack 100 also includes a first locking member 171, which passes through the first fixing hole 1321 and the second fixing hole 1614, and is fixedly connected to the insulating member 150 to position and fix the second output row 132 and the first electrical connection part 1612, so as to further ensure the connection stability between the first electrical connection part 1612 and the second output row 132, effectively avoid the connection failure between the first electrical connection member 161 and the second output row 132, thereby ensuring the overall structural stability of the battery pack 100 and ensuring the normal use of the battery pack 100. At the same time, the connection structure in this application is simple and easy to assemble, improving the assembly efficiency of the battery pack 100.

[0066] The first fixing hole 1321 and the second fixing hole 1614 can be of any shape. For example, in this application, the first fixing hole 1321 and the second fixing hole 1614 are both circular holes, but are not limited thereto.

[0067] The first locking element 171 can be any one of bolts, rivets, or clips, but is not limited to these.

[0068] For example, in this application, the first locking member 171 is a bolt. The first locking member 171 passes through the first fixing hole 1321 and the second fixing hole 1614, and is screwed to the insulating member 150 to position and fix the second output row 132 to the first electrical connection part 1612.

[0069] In some embodiments, the battery pack 100 further includes a first protective member 181 and a second protective member 182. The first protective member 181 covers the outer surface of the first electrical connection portion 1612 to insulate and isolate the first electrical connection portion 1612 from other components, prevent the first electrical connection portion 1612 from contacting other components and causing a short circuit, and ensure the normal use of the battery pack 100.

[0070] The second protective component 182 covers the outer surface of the connecting body 1611 to insulate and isolate the connecting body 1611 from other components, prevent the connecting body 1611 from contacting other components and causing a short circuit, and ensure the normal use of the battery pack 100.

[0071] The first protective component 181 and the second protective component 182 are both made of materials such as rubber or silicone, but are not limited to these.

[0072] In some embodiments, refer to Figure 7 The battery pack 100 further includes a second electrical connector 162, which is disposed on the side of the first battery pack 120 in the first direction X near the first electrical connector 161, and is electrically connected to the first output port 122. Exemplarily, in this application, the second electrical connector 162 is welded to the first output port 122, thus achieving an electrical connection between them.

[0073] The second electrical connector 162 may be made of a conductive metal or other material, but is not limited thereto. For example, the second electrical connector 162 may be made of copper or aluminum, but is not limited thereto.

[0074] Specifically, the first electrical connector 161 further includes a second electrical connector 1613, which is disposed on the side of the second sub-connector 1617 near the second electrical connector 162, and is electrically connected to the second electrical connector 162 to form an electrical connection structure of first output row 122-second electrical connector 162-second electrical connector 1613-connector body 1111-first electrical connector 1612-second output row 132, so as to realize the electrical connection between the first battery pack 120 and the second battery pack 130.

[0075] In some embodiments, refer to Figure 7 The second electrical connector 162 has a third fixing hole 1621 at one end near the second electrical connector 1613, and the second electrical connector 1613 has a fourth fixing hole 1615.

[0076] The battery pack 100 also includes a second locking member 172, which passes through the third fixing hole 1621 and the fourth fixing hole 1615 to fix the second electrical connection part 1613 to the second electrical connection member 162 and electrically connect the second electrical connection part 1613 to the second electrical connection member 162, thereby ensuring the connection stability between the second electrical connection part 1613 and the second electrical connection member 162, effectively avoiding connection failure between the second electrical connection part 1613 and the second electrical connection member 162, and thus ensuring the overall structural stability of the battery pack 100 and the normal use of the battery pack 100. At the same time, the connection structure in this application is simple, easy to assemble, and improves the assembly efficiency of the battery pack 100.

[0077] The third fixing hole 1621 and the fourth fixing hole 1615 can be of any shape. For example, in this application, the third fixing hole 1621 and the fourth fixing hole 1615 are both circular holes, but are not limited thereto.

[0078] The second locking element 172 can be any one of bolts, rivets, or clips, but is not limited to these.

[0079] In some embodiments, refer to Figure 8 The housing 110 includes a bottom plate 112, a side beam 113 and a first support part 114. The side beam 113 is arranged around the edge of the bottom plate 112, and the bottom plate 112 and the side beam 113 cooperate to form a receiving cavity 111. The first support part 114 protrudes and is connected to the side of the side beam 113 near the receiving cavity 111.

[0080] The bottom plate 112 and the side beam 113 are welded and fixed together to ensure the overall sealing performance of the box 110.

[0081] The side beam 113 and the first support portion 114 can be integrally formed, meaning they are a single structure. For example, the side beam 113 and the first support portion 114 can be integrally die-cast. Alternatively, the side beam 113 and the first support portion 114 can be separately configured and fixedly connected. For example, the first support portion 114 can be fixedly connected to the side beam 113 through welding or other processes. This application does not impose specific limitations; the configuration can be tailored to the actual situation.

[0082] Reference Figure 3The battery pack 100 also includes: a third protective member 183, which is fixedly connected to the first support portion 114. The second electrical connection portion 1613 and the second electrical connection member 162 are both fixedly connected to the third protective member 183. The second electrical connection portion 1613, the second electrical connection member 162, part of the third protective member 183 and the first support portion 114 are stacked in the second direction Z to insulate the first support portion 114 and the second electrical connection portion 1613 and the second electrical connection member 162.

[0083] The third protective component 183 is fixedly connected to the first support part 114 by a snap-fit ​​structure, but is not limited thereto.

[0084] The third protective component 183 may be made of materials such as rubber or silicone, but is not limited to these.

[0085] Understandably, this application stacks the second electrical connection portion 1613, the second electrical connector 162, a portion of the third protective member 183, and the first support portion 114 in the second direction Z, so that the first support portion 114 supports the second electrical connection portion 1613 and the second electrical connector 162, thereby further ensuring the connection stability between the second electrical connection portion 1613 and the second electrical connector 162, effectively preventing connection failure between the second electrical connection portion 1613 and the second electrical connector 162, and thus ensuring the overall structural stability of the battery pack 100 and its normal use. At the same time, this application places a portion of the third protective member 183 between the second electrical connector 162 and the first support portion 114 to insulate the first support portion 114 from contact with the second electrical connection portion 1613 and the second electrical connector 162, thereby preventing short circuits caused by contact between the first support portion 114 and the second electrical connection portion 1613 and the second electrical connector 162, and further ensuring the normal use of the battery pack 100.

[0086] In some embodiments, refer to Figures 2 to 3The second battery pack 130 further includes a first support member 133. Multiple second individual cells 131 and an insulating member 150 are all disposed on the side of the first support member 133 away from the base plate 112. The first support member 133 is connected to the first support portion 114, so that the first support member 133 supports the insulating member 150, further enabling the insulating member 150 to fix and support the connection between the first electrical connection portion 1612 and the second output row 132, ensuring the connection stability between the first electrical connection portion 1612 and the second output row 132, effectively preventing connection failure between the first electrical connection portion 161 and the second output row 132, thereby ensuring the overall structural stability of the battery pack 100 and its normal use. Simultaneously, the first support portion 114 supports and fixes the second battery pack 130, preventing the second battery pack 130 from directly connecting to the base plate 112 and side beam 113 of the housing 110, which would affect the overall sealing performance of the battery pack 100, thus ensuring the overall sealing performance of the battery pack 100.

[0087] Specifically, the first support member 133 has a clearance groove 1331 at the end near the insulating member 150 in the first direction X. The second electrical connector 162 passes through the clearance groove 1331 to avoid the second electrical connector 162. The positional relationship between the first support member 133 and the second electrical connector 162 is reasonably designed to ensure that the second electrical connector 162 makes reasonable use of the internal space of the housing 110, so as to realize the electrical connection between the first battery pack 120 and the second battery pack 130 in a limited space, and to ensure the rationality of the structural design between the components in the battery pack 100.

[0088] In some embodiments, refer to Figures 2 to 3 The housing 110 also includes a second support 115, which protrudes and is connected to the side beam 113 near the receiving cavity 111, and the second support 115 is disposed near the bottom plate 112 relative to the first support 114.

[0089] The first battery pack 120 also includes a second support member 123, wherein a plurality of first individual batteries 121 are disposed on the side of the second support member 123 away from the bottom plate 112, and the second support member 123 is connected to the second support part 115 so as to support and fix the first battery pack 120 by means of the second support part 115, thereby preventing the first battery pack 120 from being directly connected to the bottom plate 112 and the side beam 113 of the housing 110 to avoid affecting the overall sealing performance of the battery pack 100, thereby ensuring the overall sealing performance of the battery pack 100.

[0090] On the other hand, in the embodiments of this application, this application also provides an electrical device, including: a battery pack 100 as in any of the above embodiments, wherein the battery pack 100 serves as a power supply for the electrical device.

[0091] Among them, electrical devices may include, but are not limited to, mobile devices (such as mobile phones, laptops, etc.), electric vehicles (such as pure electric vehicles, hybrid electric vehicles, plug-in hybrid electric vehicles, electric bicycles, electric scooters, electric golf carts, electric trucks, etc.), electric trains, ships and satellites, energy storage systems, etc.

[0092] The above steps are provided only to help understand the method, structure, and core ideas of this application. Those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims.

Claims

1. A battery pack, characterized in that, Having a vertical first direction and a vertical second direction, including: The box body is equipped with a receiving cavity; A lid is attached to one side of the box body in the second direction; A first battery pack, comprising: a plurality of first individual cells and a first output bar, wherein the plurality of first individual cells and the first output bar are disposed within the receiving cavity, and the first output bar is electrically connected to the plurality of first individual cells; The second battery pack is disposed near the cover relative to the first battery pack. The second battery pack includes: a plurality of second individual cells and a second output bar. The plurality of second individual cells and the second output bar are both disposed in the receiving cavity. The second output bar is electrically connected to the plurality of second individual cells. An insulating element, disposed within the receiving cavity and extending along the second direction, the insulating element being disposed on one side of the second battery pack in the first direction; and The first electrical connector is electrically connected to the first output bar and the second output bar respectively, and both the first electrical connector and the second output bar are fixedly connected to the insulating member.

2. The battery pack as described in claim 1, characterized in that, The first electrical connector includes: a connecting body and a first electrical connection portion, wherein along the first direction, the first electrical connection portion is connected to the side of the connecting body near the insulating member, and a portion of the connecting body extends along the second direction; The first electrical connection portion and the second output row are electrically connected at the insulating member, and both the first electrical connection portion and the second output row are fixedly connected to the insulating member.

3. The battery pack as described in claim 2, characterized in that, The battery pack also has a third direction, wherein the first direction, the second direction, and the third direction are perpendicular to each other; The connection body includes: a first sub-connection portion and a second sub-connection portion, the first sub-connection portion extending along the third direction, the second sub-connection portion extending along the second direction, the first sub-connection portion being disposed on the side of the second sub-connection portion closer to the first electrical connection portion in the second direction, and the second sub-connection portion being connected to the first electrical connection portion through the first sub-connection portion.

4. The battery pack as described in claim 2, characterized in that, The second output bar has a first fixing hole, and the first electrical connection part has a second fixing hole; The battery pack further includes a first locking member, which passes through the first fixing hole and the second fixing hole, and is fixedly connected to the insulating member to position and fix the second output outlet to the first electrical connection portion.

5. The battery pack as described in claim 2, characterized in that, The battery pack further includes: a first protective member and a second protective member, wherein the first protective member covers the outer surface of the first electrical connection portion; and the second protective member covers the outer surface of the connection body.

6. The battery pack as described in claim 3, characterized in that, The battery pack further includes: a second electrical connector disposed on the side of the first battery pack close to the first electrical connector in the first direction, and the second electrical connector is electrically connected to the first output outlet; The first electrical connector further includes a second electrical connection portion disposed on the side of the second sub-connection portion near the second electrical connector, and the second electrical connection portion is electrically connected to the second electrical connector.

7. The battery pack as described in claim 6, characterized in that, The second electrical connector has a third fixing hole at one end near the second electrical connection part, and the second electrical connection part has a fourth fixing hole; The battery pack further includes a second locking member, which passes through the third fixing hole and the fourth fixing hole to fix the second electrical connection part to the second electrical connector and to electrically connect the second electrical connection part to the second electrical connector.

8. The battery pack as described in claim 6, characterized in that, The housing includes a bottom plate, side beams, and a first support portion. The side beams are arranged around the edge of the bottom plate, and the bottom plate and the side beams cooperate to enclose the receiving cavity. The first support portion protrudes and is connected to the side beams on the side closest to the receiving cavity. The battery pack further includes: a third protective component, fixedly connected to the first support portion; the second electrical connection portion and the second electrical connector are both fixedly connected to the third protective component; the second electrical connection portion, the second electrical connector, a portion of the third protective component, and the first support portion are stacked in the second direction to insulate the first support portion, the second electrical connection portion, and the second electrical connector.

9. The battery pack as described in claim 8, characterized in that, The second battery pack further includes: a first support member, wherein a plurality of second individual cells and the insulating member are disposed on the side of the first support member away from the base plate, and the first support member is connected to the first support portion; The first support member has a clearance groove at one end near the insulating member in the first direction, and the second electrical connector passes through the clearance groove.

10. An electrical appliance, characterized in that, include: The battery pack as described in any one of claims 1 to 9, wherein the battery pack serves as the power supply for the electrical device.

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