Battery and electric equipment

Abstract

The invention relates to the technical field of battery structures, and discloses a battery and electric equipment.The battery comprises a jumper bar, a tray and a box body, and the box body is provided with a containing cavity used for containing a plurality of battery cell sets; the bridging bar comprises a bridging part and two connecting end parts which are both connected with the bridging part, and the two connecting end parts are bent towards the same side relative to the bridging part so as to be used for connecting two adjacent battery cell groups in the box body; the tray is arranged on the plurality of battery cell groups and is provided with a bearing part extending out of the accommodating cavity, and the bridging part is mounted on the bearing part. According to the pool and the electric equipment, the temperature of the jumper bar can be better controlled, and the possibility that the jumper bar is overheated is reduced.

Description

Technical Field

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

[0002] Existing batteries typically include a casing, battery cells, and jumper bars. The battery cells are installed in the housing of the casing to form multiple cell groups. The jumper bars are used to connect the various cell groups and are also installed in the housing of the casing.

[0003] In the battery structure described above, since the jumper bar is installed in the housing cavity of the casing, if the jumper bar is too large, it will affect the assembly of the battery cells. Therefore, the volume of the jumper bar can usually only be reduced to make the battery cells installed more tightly in the housing cavity and improve the battery energy density. However, this brings the following problems: the current flow area of ​​the jumper bar is small, which makes it easy to generate heat and the temperature rise is difficult to control, thus posing certain safety hazards to the battery.

[0004] Therefore, there is a need to design a battery and electrical device that can better control the temperature of the jumper busbar and reduce the possibility of overheating.

[0005] The above information is provided as background information only to aid in understanding this disclosure and does not constitute an assertion or admission that any of the above content can be used as prior art relative to this disclosure. Summary of the Invention

[0006] This invention provides a battery and electrical device that can better control the temperature of the jumper bar and reduce the possibility of overheating of the jumper bar.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A battery includes a jumper bar, a tray, and a housing, the housing having a receiving cavity for accommodating a plurality of battery cell packs; The jumper bar includes a jumper portion and two connecting ends that are both connected to the jumper portion. The two connecting ends are bent to the same side relative to the jumper portion to connect two adjacent battery cell groups in the housing. The tray is disposed on the plurality of said cell groups and has a support portion extending out of the receiving cavity, and the bridging portion is mounted on the support portion.

[0008] Optionally, the housing includes a crossbeam, and a fixed bracket is installed on the side of the crossbeam away from the receiving cavity; The battery also includes a strapping assembly for securing the bridging portion to the support portion, the fixing bracket supporting the strapping assembly.

[0009] Optionally, the support portion extends from the side of the crossbeam near the receiving cavity to the side away from the receiving cavity and beyond the crossbeam, and the support portion is provided with a through hole; The strapping tape in the strapping assembly passes through the through hole to secure the cross-connection to the support portion, and the strapping assembly is fixedly connected to the fixing bracket.

[0010] Optionally, the support portion is provided with at least two limiting protrusions spaced apart along the length direction of the support portion; Each of the limiting protrusions has two spaced through holes along the width direction of the support portion, and each of the limiting protrusions forms a limiting groove between the two through holes. The strapping passes through the through holes and is located in the limiting groove. One of the through holes is located in the area of ​​the support portion that extends beyond the crossbeam and corresponds to the position of the fixing frame.

[0011] Optionally, the bridging portion is provided with an arched buffer portion that avoids the limiting protrusion, and the strapping is tied to the arched buffer portion.

[0012] Optionally, the battery also includes cushioning foam; The cushioning foam is installed between the bottom surface of the support and the top surface of the crossbeam, and the cushioning foam abuts against the bottom surface of the support and the top surface of the crossbeam respectively.

[0013] Optionally, a positioning hole is provided on the connecting end; The tray is provided with a hot riveting post corresponding to the positioning hole, and the hot riveting post is inserted into the positioning hole and hot riveted to the positioning hole; A welding area is provided on the connecting end, and a mounting hole is provided on the tray corresponding to the welding area. The battery cell terminal of the battery cell assembly is exposed in the mounting hole and welded to the welding area.

[0014] Optionally, the binding assembly includes a cable tie fixing head, which is movably inserted through the binding strap; The fixed bracket is provided with a fixed through hole, and the cable tie fixing head includes a fixing part that passes through the fixed through hole and an elastic pressing part for pressing against the top surface of the fixed bracket; The fixing part includes several elastic arms that spread out in an umbrella shape. The elastic arms pass through the fixing through hole and press against the bottom side of the fixing bracket.

[0015] Optionally, a placement groove is formed on the support portion, and the bridging portion is at least partially placed in the placement groove.

[0016] An electrical device comprising a battery as described in any of the preceding claims.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The battery and electrical device provided by this invention have a support portion extending from the tray. The support portion is located outside the receiving cavity. The two connecting ends of the jumper bar connect to different battery cells, and the jumper bar connects the two connecting ends. The jumper bar is located on the support portion, so the support portion is actually outside the receiving cavity. Only the connecting ends of the jumper bar are located inside the receiving cavity. In this case, the cross-sectional area of ​​the jumper bar can be reasonably increased to improve the current carrying capacity of the jumper bar. The jumper bar can be made wider and thicker to reduce the temperature rise of the jumper bar. In addition, since the jumper bar is located outside the receiving cavity, the heat dissipation effect can also be better improved, thereby further reducing the possibility of the jumper bar overheating.

[0018] The present invention has other features and advantages, which will be apparent from or will be set forth in detail in the accompanying drawings and the following detailed description, which together serve to explain the particular principles of the invention. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a partial structural schematic diagram of the battery provided in an embodiment of the present invention; Figure 2 This is a top view of a portion of the battery's jumper bar and tray in an assembled state, as provided in an embodiment of the present invention. Figure 3 yes Figure 2 An enlarged schematic diagram of the middle structure at position B; Figure 4 This is a schematic diagram showing the installation positions of some of the jumper bars, pallets, and boxes provided in an embodiment of the present invention; Figure 5 yes Figure 4 An enlarged schematic diagram of the middle structure at position A; Figure 6 This is a schematic diagram of the back structure of the tray provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the pallet support portion provided in an embodiment of the present invention; Figure 8 This is a three-dimensional structural schematic diagram of the bundling assembly provided in an embodiment of the present invention; Figure 9 This is a front view schematic diagram of the bundling assembly provided in an embodiment of the present invention; Figure 10 This is a side view of the bundling assembly provided in an embodiment of the present invention.

[0021] Figure 11 This is an exploded view of the assembly of the jumper bar, binding assembly, support part and fixing bracket provided in the embodiment of the present invention.

[0022] Reference numerals: 1. Crossover bar; 101. Welding area; 11. Connecting end; 1101. Positioning hole; 12. Crossover part; 121. Buffer part; 2. Tray; 201. Hot riveting post; 202. Mounting hole; 21. Support part; 2101. Placement groove; 211. Limiting protrusion; 212. Limiting groove; 213. Protrusion; 3. Box body; 301. Receiving cavity; 31. Crossbeam; 4. Fixing bracket; 401. Fixing through hole; 5. Bundling assembly; 51. Bundling strap; 52. Bundling strap fixing head; 521. Fixing part; 522. Pressing part; 5211. Elastic arm; 6. Cushioning foam. Detailed Implementation

[0023] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0024] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0025] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0026] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0027] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0028] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0029] As understood in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0030] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0031] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0032] Example 1 In view of the aforementioned defects in existing batteries, the applicant, based on years of extensive practical experience and professional knowledge in the design and manufacture of such products, and in conjunction with the application of theoretical principles, actively conducted research and innovation in order to create a solution to the defects in the existing technology and make the battery more practical. After continuous research, design, and repeated prototype production and improvement, this invention with real practical value was finally created.

[0033] Please refer to Figures 1 to 11 This invention provides a battery including a jumper bar 1, a tray 2, and a housing 3. The housing 3 has a receiving cavity 301 for accommodating multiple battery cell groups. The jumper bar 1 includes a jumper portion 12 and two connecting ends 11 that are connected to the jumper portion 12. The two connecting ends 11 are bent to the same side relative to the jumper portion 12 to connect two adjacent battery cell groups in the housing 3. In the battery, the jumper portion 12 is used to connect two adjacent battery cell groups in series or in parallel. The two connecting ends 11 and the jumper portion 12 form a U-shaped structure, and the extension direction of the two connecting ends 11 is parallel to the expansion direction of the battery cell group. When the battery cell group generates expansion stress during charging and discharging, or when the battery pack is subjected to vehicle vibration, the bent section can absorb the stress through slight deformation, avoiding direct stress transmission to the welding area 101.

[0034] The tray 2 is disposed on multiple battery cell groups and has a support portion 21 extending out of the receiving cavity 301. The support portion 21 of the tray 2 extends to the outside of the receiving cavity 301. The support portion 21 and the bridging portion 12 are designed to protect the bridging portion 12, making it easier to install the bridging portion 12 on the support portion 21 and preventing the tray 2 from being installed backwards. The support portion 21 constitutes a foolproof structure.

[0035] In this embodiment, the battery has a support portion 21 extending laterally from the tray 2. The support portion 21 is located outside the receiving cavity 301 of the housing 3. The connecting end 11 of the jumper bar 1 connects to the battery cell, and the jumper portion 12 connects the two connecting ends 11. The jumper portion 12 is located on the support portion 21, which is actually outside the receiving cavity 301. Only the connecting end 11 of the jumper bar 1 is located in the receiving cavity 301 to connect with the battery cell assembly. In this way, the cross-sectional area of ​​the jumper portion 12 can be reasonably increased to improve the current carrying capacity of the jumper bar 1. That is, the thickness and width of the jumper portion 12 can be set to be thicker and wider, reducing the temperature rise of the jumper bar 1. In addition, the bridging portion 12 is located outside the receiving cavity 301, and is not limited by the narrow space inside the receiving cavity 301. The outside of the receiving cavity 301 has a larger heat dissipation space, and is not close to the battery cell assembly, does not compete with the battery cell assembly for heat dissipation channels, and is not close to other heat dissipation objects. The heat dissipation effect of the bridging portion 12 can also be better improved, thereby further reducing the possibility of overheating of the bridging row 1. Even if local overheating occurs, the external structure can facilitate the rapid dissipation of heat to the environment, avoiding the thermal runaway chain reaction caused by heat accumulation.

[0036] It should be emphasized that the assembly structure of the jumper bar 1 and the tray 2 in this embodiment allows the thickness and width of the jumper portion 12 to be set to be thicker and wider, i.e., to be set as a flat structure, thus its current carrying capacity can be significantly improved. In practical use, an aluminum jumper bar 1 can be used, which can achieve a current carrying capacity comparable to or even exceeding that of a conventional copper jumper bar, and the aluminum jumper bar 1 has a lower possibility of overheating.

[0037] Optionally, the housing 3 includes a crossbeam 31, with a fixing bracket 4 mounted on the side of the crossbeam 31 away from the receiving cavity 301; the battery also includes a strapping assembly 5 for fixing the bridging portion 12 to the support portion 21, with the fixing bracket 4 supporting the strapping assembly 5. The width of the bridging portion 12 is greater than the thickness of the crossbeam 31. This not only maximizes the use of the space in the thickness direction of the crossbeam 31, improving space utilization, but also increases the contact area with the support portion 21. Combined with the fixing structure of the limiting groove 212 and the strapping strap 51, the risk of warping or slippage of the bridging portion under vibration conditions can be reduced.

[0038] The fixed bracket 4 is fixedly connected to the crossbeam 31, thereby providing good support for the support part 21, enabling it to bear a greater weight of the bridging part 12, and effectively preventing defects such as shaking of the bridging part 12. In addition, the binding and fixing of the binding assembly 5 fixes the bridging part 12 and the support part 21 to each other, jointly resisting external vibration and shaking, and better protecting the bridging part 12. The fixed bracket 4 includes two mounting plates (not shown) connected in an L-shape. One mounting plate fits against the bottom of the support portion 21, vertically bearing the vertical pressure transmitted by the bridging portion 12, preventing the support portion 21 from denting or deforming due to localized stress concentration. The other mounting plate fits against the side wall of the crossbeam 31, providing lateral limiting force to resist the horizontal displacement of the bridging portion 12 under vibration and bumpy conditions, preventing shear stress concentration at the connection between the support portion 21 and the crossbeam 31. The two mounting plates form a large-area fit with the support portion 21 and the crossbeam 31 respectively, providing load-bearing support from multiple directions. In addition, the corner space between the crossbeam 31 and the support portion 21 is fully utilized, eliminating the need to occupy redundant space inside the receiving cavity 301 or outside the battery pack. Meanwhile, the large-area bonding of the two mounting plates can form a physical isolation between the support part 21 and the crossbeam 31. Combined with the insulation effect of the buffer foam 6 described below, it further enhances the insulation redundancy between the bridging part 12 and the housing 3, avoiding the risk of creepage and short circuit caused by the offset of the support part 21 due to vibration.

[0039] Optionally, the support portion 21 extends from the side of the crossbeam 31 near the receiving cavity 301 to the side away from the receiving cavity 301 and beyond the crossbeam 31. The support portion 21 has a through hole 22, such as... Figure 7 As shown, the strapping strap 51 in the strapping assembly 5 passes through the through hole 22 and straps the crossover strip 1 to the support part 21. The strapping assembly 5 is also fixedly connected to the fixing bracket 4, which can effectively improve the fixing effect of the support part 21 and reduce the possibility of vibration or shaking of the support part 21.

[0040] Optionally, at least two limiting protrusions 211 are provided at intervals along the length direction of the support portion 21; each limiting protrusion 211 has two spaced through holes 22 along the width direction of the support portion 21, and each limiting protrusion 211 forms a limiting groove 212 between the two through holes 22, the limiting groove 212 being used to limit the binding strap 51. The binding strap 51 passes through the through holes 22 and is located within the limiting groove 212. In this embodiment, the two through holes 22 allow the binding strap 51 to pass through and limit the direction of the binding strap 51, while the two limiting protrusions 211 further limit the position of the binding strap 51, so that the binding strap 51 is locked between the two limiting protrusions 211, avoiding the situation where it is not tied tightly, and also avoiding the situation where the binding strap 51 slides along the length direction of the support portion 21 after being tied tightly, resulting in loosening. One of the through holes 22 is located in the area of ​​the support portion 21 that extends beyond the crossbeam 31 and corresponds to the position of the fixing bracket 4. In this embodiment, the limiting protrusion 211 is located on one side of the bottom of the support portion 21.

[0041] Optionally, the bridging portion 12 is provided with an arched buffer portion 121 that avoids the limiting protrusion 211, and the strapping 51 is tied to the arched buffer portion 121. The arched buffer portion 121 can effectively alleviate the stress caused by the expansion of the battery pack in the later stage, improve the service life of the battery, and form a double buffer with the U-shaped structure of the bridging bar 1, thereby improving the fatigue resistance of the bridging bar. At the same time, multiple buffer portions 121 are provided along the length of the supporting portion 21, corresponding one-to-one with the limiting protrusion 211, so as to disperse the local concentrated stress to the entire bridging portion 12, avoiding the cracking of the aluminum bar caused by stress concentration; at the same time, the arched structure can improve the bending stiffness of the bridging portion 12, reduce deformation under vibration conditions, and maintain connection stability. In addition, multiple arched buffer sections 121 can form a multi-segment gap channel between the bridging section 12 and the supporting section 21. Outside air can flow through the gaps below the bridging section 12, increasing the heat dissipation area while allowing heat to be evenly distributed along the length of the supporting section 21, thus avoiding local heat accumulation.

[0042] Optionally, in this embodiment, the jumper bus 1 is an aluminum busbar formed by stamping and punching. The aluminum busbar can be directly welded to the battery cell terminals of the battery pack, simplifying the assembly process and improving installation efficiency. It should also be noted that aluminum is relatively soft, making it easier to stamp and punch into more complex shapes. Existing copper busbars require bolt connections, which are complex to install and require other components for connection; they cannot be directly connected to the battery cell terminals. Furthermore, it should be noted that the density of aluminum is approximately one-third that of copper, and the current carrying capacity of aluminum is 6 A / mm². 2 Copper is 8A / mm 2To achieve the same current carrying capacity, the cross-sectional area of ​​an aluminum busbar only needs to be 1.33 times that of a copper busbar, while its weight is only 1.33 * 1 / 3 = 44% of that of a copper busbar. Therefore, even if the volume of an aluminum busbar is half that of a copper busbar, its weight is still lower than that of a copper busbar, and its current carrying capacity is better than that of a copper busbar of the same weight, which helps to reduce the weight of the battery. At the same time, the procurement cost of aluminum is lower than that of copper, and the die wear of the stamping and cutting process is less, which can reduce material and process costs.

[0043] Optionally, the battery also includes cushioning foam 6; the cushioning foam 6 is installed between the bottom surface of the support 21 and the top surface of the crossbeam 31, and the cushioning foam 6 abuts against the bottom surface of the support 21 and the top surface of the crossbeam 31 respectively. The cushioning foam 6 provides a good cushioning effect, effectively preventing impact collisions, and the cushioning foam 6 separates the support 21 and the crossbeam 31 to form a good insulation effect, avoiding the risk of creepage and breakdown between the jumper bar 1 and the housing 3.

[0044] Optionally, a positioning hole 1101 is provided on the connecting end 11, and a hot riveting post 201 is provided on the tray 2 corresponding to the positioning hole 1101. The hot riveting post 201 is inserted into the positioning hole 1101 and hot riveted to the positioning hole 1101. In this embodiment, the tray 2 can be connected to the positioning hole 1101 of the connecting end 11 through the hot riveting post 201, thereby fixing the jumper bar 1 in a suitable position, avoiding deviation in the position of the connecting end 11, ensuring that the welding area 101 and the cell electrode are accurately aligned, and avoiding the problem of false welding or missing welding caused by misalignment during welding.

[0045] Furthermore, a welding area 101 is provided on the connecting end 11, and a mounting hole 202 is provided on the tray 2 corresponding to the welding area 101. The battery cell terminals of the battery cell assembly are exposed in the mounting hole 202 and welded to the welding area 101. Figure 1 As can be seen, the welding area 101 in this embodiment corresponds to the location of the battery cell terminal, thus enabling the welding area 101 to be directly welded to the battery cell terminal. In this embodiment, the jumper bar 1 does not require connecting bolts, but is directly connected to the battery cell terminal, reducing the complexity of assembly, saving intermediate connecting parts, and thus further improving space utilization.

[0046] Optionally, the binding assembly 5 includes a cable tie fixing head 52, which is movably inserted through the binding strap 51; the fixing bracket 4 is provided with a fixing through hole 401, and the cable tie fixing head 52 includes a fixing part 521 that passes through the fixing through hole 401 and an elastic pressing part 522 for pressing against the top surface of the fixing bracket 4; the fixing part 521 includes a plurality of umbrella-shaped elastic arms 5211, which pass through the fixing through hole 401 and press against the bottom side surface of the fixing bracket 4. Figure 5 and Figure 8As shown, the cable tie fixing head 52 passes through the fixing through hole 401. The elastic pressing part 522 and the elastic arm 5211 elastically press against a mounting plate of the fixing bracket 4 from the upper and lower sides, respectively, thereby fixing the cable tie fixing head 52. The L-shaped fixing bracket 4 is set in the corner space between the crossbeam 31 and the support part 21, and the L-shaped fixing bracket 4 itself forms a corner receiving space. The elastic arm 5211 uses this corner receiving space to achieve pressing and fixing without additional expansion of the bracket volume, further improving the space utilization rate. The cable tie fixing head 52 then binds the crossover strip 1 and the support part 21 with the binding strap 51 to achieve a good fixing effect. It should be noted that the binding strap 51 is limited by the limiting groove 212, and the fixing bracket 4 elastically presses and fixes, which can realize a triple fixing structure of bottom support, upper binding, and side limiting, realizing multi-directional limiting and fixing. Under high-frequency vibration, it can also effectively suppress the resonance of the crossover strip 1 and reduce the risk of fatigue failure at the weld.

[0047] Optionally, a placement groove 2101 is formed on the support portion 21, and the bridging portion 12 is at least partially placed in the placement groove 2101. During assembly, the two connecting ends 11 of the U-shaped structure can be directly aligned with the terminal positions of adjacent cell groups, and the bridging portion 12 naturally falls into the placement groove 2101 of the support portion 21, achieving rapid positioning and assembly. The placement groove 2101 can, on the one hand, improve the wrapping effect of the tray 2 on the bridging portion 12, enhancing the protection, support, and insulation effects; on the other hand, it can position the support portion 21, that is, the groove 2101 can limit the movement of the crossbeam 31, thereby preventing the support portion 21 from being installed backwards.

[0048] It should also be noted that the support part 21 is provided with an insulating layer to provide insulation and withstand pressure; the insulating layer in the middle of the support part 21 is also wrapped with high temperature and fireproof tape to prevent high temperature gas from being ejected to the jumper bar 1 after thermal runaway, thus avoiding arcing and fire.

[0049] Example 2 This embodiment discloses an electrical device, including a battery as described in any one of Embodiment 1.

[0050] Batteries are used to power electrical devices, which can be cars, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, medical devices, and power tools, among others.

[0051] Among them, automobiles can be fuel-powered automobiles, natural gas-powered automobiles, or new energy vehicles. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc.; spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.; electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc.; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc.

[0052] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A battery, characterized in that, It includes a jumper bar (1), a tray (2) and a housing (3), the housing (3) being provided with a receiving cavity (301) for accommodating multiple battery cell groups. The jumper bar (1) includes a jumper section (12) and two connecting ends (11) that are both connected to the jumper section (12). The two connecting ends (11) are bent to the same side relative to the jumper section (12) to connect two adjacent battery cell groups in the housing (3). The tray (2) is disposed on a plurality of the battery cells and has a support portion (21) extending out of the receiving cavity (301), and the bridging portion (12) is mounted on the support portion (21).

2. The battery according to claim 1, characterized in that, The box (3) includes a crossbeam (31), and a fixed bracket (4) is installed on the side of the crossbeam (31) away from the receiving cavity (301). The battery also includes a strapping assembly (5) for securing the jumper (12) to the support (21), and the fixing bracket (4) supports the strapping assembly (5).

3. The battery according to claim 2, characterized in that, The support portion (21) extends from the side of the crossbeam (31) near the receiving cavity (301) to the side away from the receiving cavity (301) and beyond the crossbeam (31), and the support portion (21) is provided with a through hole (22). The strapping tape (51) in the strapping assembly (5) passes through the through hole (22) to secure the crossover strip (1) to the support part (21), and the strapping assembly (5) is fixedly connected to the fixing bracket (4).

4. The battery according to claim 3, characterized in that, The support portion (21) is provided with at least two limiting protrusions (211) spaced apart along the length direction of the support portion (21). Each of the limiting protrusions (211) has two spaced through holes (22) along the width direction of the support portion (21), and each of the limiting protrusions (211) forms a limiting groove (212) between the two through holes (22). The strapping (51) passes through the through holes (22) and is located in the limiting groove (212). One of the through holes (22) is located in the area of ​​the support (21) beyond the crossbeam (31) and corresponds to the position of the fixing bracket (4).

5. The battery according to claim 4, characterized in that, The bridging part (12) is provided with an arched buffer part (121) to avoid the limiting protrusion (211), and the strapping (51) is tied to the arched buffer part (121).

6. The battery according to claim 2, characterized in that, It also includes cushioning foam (6); The cushioning foam (6) is installed between the bottom surface of the support part (21) and the top surface of the crossbeam (31), and the cushioning foam (6) abuts against the bottom surface of the support part (21) and the top surface of the crossbeam (31) respectively.

7. The battery according to claim 1, characterized in that, A positioning hole (1101) is provided on the connecting end (11). The tray (2) is provided with a hot riveting post (201) corresponding to the positioning hole (1101). The hot riveting post (201) is inserted into the positioning hole (1101) and hot riveted to the positioning hole (1101). A welding area (101) is provided on the connecting end (11), and a mounting hole (202) is provided on the tray (2) corresponding to the welding area (101). The battery cell pole of the battery cell assembly is exposed in the mounting hole (202) and welded to the welding area (101).

8. The battery according to claim 3, characterized in that, The binding assembly (5) includes a cable tie fixing head (52), which is movably inserted through the binding strap (51). The fixed bracket (4) is provided with a fixed through hole (401), and the cable tie fixing head (52) includes a fixing part (521) that passes through the fixed through hole (401) and an elastic pressing part (522) for pressing against the top surface of the fixed bracket (4). The fixing part (521) includes a plurality of elastic arms (5211) that are spread out in an umbrella shape. The elastic arms (5211) pass through the fixing through hole (401) and press against the bottom side of the fixing bracket (4).

9. The battery according to claim 1, characterized in that, A placement groove (2101) is formed on the support portion (21), and the bridging portion (12) is at least partially placed in the placement groove (2101).

10. An electrical appliance, characterized in that, It includes the battery as described in any one of claims 1 to 9.

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