A battery and an electric device

Abstract

The application relates to a battery and a power utilization device. The battery comprises a battery box, two battery modules arranged in the battery box and oppositely stacked along a Z direction, each battery module having a total positive connection end and a total negative connection end arranged on the same side along an X direction, wherein the total positive connection end of one battery module and the total negative connection end of the other battery module are opposite to each other along the Z direction; the X direction is the length direction of the battery box, and the Z direction is the height direction of the battery box; a partition plate is arranged between the two battery modules, and a through hole is formed in the partition plate; a jumper row is arranged in the through hole along the Z direction, and one end of the jumper row is electrically connected to the total positive connection end of one battery module, and the other end is electrically connected to the total negative connection end of the other battery module; and a sealing rubber sleeve is sleeved between the inner wall of the through hole and the jumper row.

Description

Technical Field

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

[0002] Lithium-ion batteries possess advantages such as high energy density, long cycle life, high rate performance, good safety, and environmental friendliness, making them a crucial energy source for modern electronic products and electric vehicles. Generally, a battery comprises multiple battery modules, each containing multiple individual battery cells. The individual cells within the same battery module are connected via copper busbars, achieving series and parallel connections. Each battery module requires potting compound to secure the individual battery cells and provide insulation protection.

[0003] To achieve series and parallel connections between battery modules, electrical connectors are needed to link them. However, when potting adhesive into a battery module, the adhesive can overflow along the connectors into adjacent modules, causing adhesive overflow and negatively impacting battery quality. Utility Model Content

[0004] Therefore, it is necessary to provide a battery and power device that can avoid glue overflow and thus improve battery quality in order to address the above problems.

[0005] To achieve the above objectives, firstly, the following technical solution is provided:

[0006] A battery comprising:

[0007] Battery box;

[0008] Two battery modules are both disposed inside the battery box and are stacked opposite each other along the Z direction. Each battery module has a total positive connection terminal and a total negative connection terminal disposed on the same side along the X direction. The total positive connection terminal of one battery module and the total negative connection terminal of the other battery module are opposite each other along the Z direction. The X direction is the length direction of the battery box, and the Z direction is the height direction of the battery box.

[0009] A separator is disposed between the two battery modules, and a through hole is provided on the separator;

[0010] A jumper bar, extending along the Z-direction through the through hole, wherein one end of the jumper bar is electrically connected to the general positive connection terminal of one of the battery modules, and the other end is electrically connected to the general negative connection terminal of the other battery module; and

[0011] A sealing sleeve is fitted between the inner wall of the through hole and the crossover bar.

[0012] In some embodiments, the sealing sleeve includes a main body and two fitting parts respectively connected to opposite ends of the main body. The main body is fitted inside the through hole, and the two fitting parts are respectively fitted to opposite side surfaces of the partition.

[0013] The main body has a hollow hole that extends through its opposite ends, and the cross-connecting strip extends through the hollow hole. The hollow hole is designed to mimic the cross-section of the cross-connecting strip.

[0014] In some embodiments, the main body portion is interference-fitted with the inner wall of the through hole; and / or

[0015] The inner wall of the hollow hole is interference-fitted with the cross-connector.

[0016] In some embodiments, each of the battery modules includes a plurality of cells arranged in an array, and each of the cells includes a terminal post and an explosion-proof valve respectively disposed on opposite sides along the Z direction;

[0017] In the Z direction, each battery module is provided with a cell positioning bracket on one side corresponding to the explosion-proof valve, and each battery module is provided with a CCS assembly on one side corresponding to the terminal post. The CCS assembly has the total positive connection terminal and the total negative connection terminal.

[0018] In some embodiments, each battery module further includes a support column, the positions of which correspond one-to-one with the positions of each of the total positive connection terminal and each of the total negative connection terminals. One end of each support column is connected to the cell positioning bracket, and the other end is provided with a connecting part for connecting the corresponding total positive connection terminal or the total negative connection terminal.

[0019] In some embodiments, one end of the jumper bar is locked to the connection portion of the corresponding support column by fasteners, and the main positive connection end of one of the battery modules is locked to the connection portion of the corresponding support column.

[0020] The other end of the jumper bar is fastened to the connection part of the corresponding support column by fasteners, and the total negative connection end of the other battery module is locked to the connection part of the corresponding support column.

[0021] In some embodiments, the cell positioning bracket has a positioning hole on the side facing the CCS assembly;

[0022] One end of the support column is inserted into the positioning hole; and / or, one end of the support column is glued into the positioning hole with adhesive.

[0023] In some embodiments, the connecting part is a threaded sleeve, and the fastener is a threaded fastener that is threadedly connected to the threaded sleeve.

[0024] In some embodiments, the jumper includes a main body segment and two connecting segments respectively connected to both ends of the main body segment, the two connecting segments being bent toward the same side of the main body segment;

[0025] The main body segment is provided through the sealing sleeve, one of the connecting segments is electrically connected to the total positive connection terminal of one of the battery modules, and the other connecting segment is electrically connected to the total negative connection terminal of another battery module.

[0026] To achieve the above objectives, the second aspect provides the following technical solution:

[0027] An electrical device comprising a battery as described in the first aspect.

[0028] Compared with the prior art, this application has the following beneficial effects:

[0029] The aforementioned battery and electrical device have a jumper bar inserted through a through hole in the separator, allowing the two ends of the jumper bar to be electrically connected to the two battery modules respectively. This achieves electrical connection between the total positive and total negative connection terminals of the two battery modules. The through hole in the separator is sealed with a sealing sleeve to prevent glue from overflowing from the through hole during glue filling, thus avoiding adverse effects on battery quality due to glue overflow. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the battery structure in one embodiment of this application;

[0031] Figure 2 for Figure 1 The diagram shown illustrates the structure of the battery (the battery compartment is omitted).

[0032] Figure 3 for Figure 2 A side view of the battery shown;

[0033] Figure 4 for Figure 3 The battery shown is a partial cross-sectional view along the AA direction.

[0034] Figure 5 for Figure 4 The diagram shows the structure of the sealing sleeve for the battery.

[0035] Figure 6 for Figure 5 A cross-sectional view of the sealing sleeve shown;

[0036] Figure 7 for Figure 2 The diagram shows the structural structure of the battery cell.

[0037] Figure 8 for Figure 7 The diagram shows the structure of the battery cell from another perspective.

[0038] Figure 9 for Figure 2 A partial structural diagram of the battery cell positioning bracket shown;

[0039] Figure 10 for Figure 2 The diagram shows the structure of the battery's jumper bar.

[0040] Figure 11 for Figure 1 The diagram shows the structure of the battery from another perspective (the battery compartment is omitted);

[0041] Figure 12 for Figure 11 The diagram shows the structure of the battery from another perspective. Detailed Implementation

[0042] 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.

[0043] 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", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship 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.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] 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 according to the specific circumstances.

[0046] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through 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. "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.

[0047] It should be noted that when 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. When 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. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0048] One embodiment of this application provides an electrical device that uses a battery as its power source. Specifically, the electrical device can be a vehicle, mobile phone, portable device, laptop computer, ship, spacecraft, electric toy, and power tool, etc. Vehicles can be gasoline-powered vehicles, natural gas-powered vehicles, 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. This application embodiment does not impose any special limitations on the above-mentioned electrical device.

[0049] The specific structure of the battery is described below with reference to the accompanying drawings. Please refer to the attached diagram. Figures 1 to 4 As shown, the battery includes a battery box 10, two battery modules 20, a separator 30, a jumper bar 40, and a sealing sleeve 50.

[0050] Both battery modules 20 are disposed within the battery box 10 and stacked along the Z direction. Each battery module 20 has a total positive connection terminal 231 and a total negative connection terminal 233, and the total positive connection terminals 231 and 233 of both battery modules 20 are located on the same side of the battery module 20 in the X direction. The total positive connection terminals 231 and 233 of the same battery module 20 are spaced apart along the Y direction. The total positive connection terminal 231 of one battery module 20 and the total negative connection terminal 233 of the other battery module 20 are arranged opposite to each other along the Z direction. In this embodiment, the X direction is the length direction of the battery box 10, the Y direction is the width direction of the battery box 10, and the Z direction is the height direction of the battery box 10.

[0051] A separator 30 is disposed between the two battery modules 20, thereby dividing the inner cavity of the battery box 10 into a first part and a second part, with the two battery modules 20 respectively arranged in the first part and the second part. Using the separator 30 to isolate the two battery modules reduces the propagation of ejected material between the two modules, delaying cascading thermal runaway. Simultaneously, the separator helps position the battery modules, ensuring parallelism in the Z-direction of the two modules and preventing uneven stress on the jumper bars caused by stacking misalignment. The separator also serves as a potting compound carrier, creating a rigid connection between the module and the inner cavity of the box, improving the overall vibration and shock resistance of the battery. A through hole 31 is provided on the separator 30 (see...). Figure 12 The through hole 31 connects the first and second parts of the inner cavity of the battery box 10. A jumper bar 40 passes through the through hole 31 in the partition 30 along the Z-direction. One end of the jumper bar 40 is electrically connected to the positive connection terminal 231 of one of the battery modules 20, and the other end is electrically connected to the negative connection terminal 233 of the other battery module 20, thus achieving electrical connection between the two battery modules 20 using the jumper bar 40. Using the jumper bar 40 for direct connection eliminates the need for a copper busbar adapter, resulting in a simple structure and convenient installation. Furthermore, the Z-direction connection shortens the length of the jumper bar 40, reducing loop resistance.

[0052] The sealing sleeve 50 is fitted between the inner wall of the through hole 31 and the bridging bar 40 to seal the gap between the inner wall of the through hole 31 and the bridging bar 40, thereby preventing glue overflow at the through hole 31.

[0053] It should be noted that the side of the separator 30 facing one of the battery modules 20 needs to be potted with adhesive to fix and insulate the individual cells 22 of that battery module 20. Similarly, the side of the separator 30 facing the other battery module 20 also needs to be potted with adhesive to fix and insulate the individual cells 22 of that battery module 20. However, when potting adhesive on one side of the separator 30, the adhesive may overflow through the through hole 31 to the other side of the separator 30, which may adversely affect the subsequent potting on the other side of the separator 30.

[0054] In the aforementioned battery, the jumper bar 40 passes through the through hole 31 in the separator 30, forming a stable mechanical connection. This allows the jumper bar 40 to be embedded in the separator 30, reducing the need for additional wiring space, facilitating a compact battery design, and improving energy density. The two ends of the jumper bar 40 are electrically connected to two battery modules 20, respectively, thus achieving an electrical connection between the total positive connection terminal 231 and the total negative connection terminal 233 of the two battery modules 20. A sealing sleeve 50 seals the through hole 31 in the separator 30, preventing glue from overflowing during potting and avoiding adverse effects on battery quality due to glue overflow. Simultaneously, the sealing sleeve 50 not only prevents glue overflow but also provides long-term protection against moisture and dust intrusion into the through hole, delaying corrosion of the metal jumper bar, reducing the probability of insulation failure, and extending battery life.

[0055] Please see Figure 5 and Figure 6 In the embodiments of this application, the sealing sleeve 50 includes a main body 51 and two fitting parts 53 respectively connected to opposite ends of the main body 51. The main body 51 is fitted inside the through hole 31, and the two fitting parts 53 are respectively fitted to opposite side surfaces of the partition 30, thereby preventing the adhesive from overflowing along the inner wall of the through hole 31. The main body 51 has a perforated hole 511 penetrating its opposite ends, and the cross-section of the cross-connector 40 is provided through the perforated hole 511 of the main body 51. The perforated hole 511 is shaped to match the cross-section of the cross-connector 40, so that the inner wall of the perforated hole 511 is tightly fitted to the cross-connector 40, thereby preventing the adhesive from overflowing along the surface of the cross-connector 40. The two fitting parts 53 press against the side surfaces of the partition 30 respectively. Even if the pressure on the glue-filling side increases instantaneously, the adhesive must overcome two sealing bands: the sealing part 53 and the surface of the partition, and the perforated hole 511 and the surface of the cross-connector 40, significantly reducing the probability of adhesive leakage. Meanwhile, the hollow hole 511 is contoured to the cross-section of the cross-connector 40, and automatically aligns when inserted. This can compensate for the cumulative dimensional deviations of the partition 30, cross-connector 40 and through hole 31. No additional positioning fixtures are needed. The elastic rebound of the rubber sleeve forms a radial clamping force, and it will not loosen even under long-term vibration.

[0056] Furthermore, the main body 51 is interference-fitted with the inner wall of the through hole 31, thereby making the main body 51 fit tightly with the inner wall of the through hole 31, further improving the sealing effect.

[0057] Furthermore, the inner wall of the perforated hole 511 is interference-fitted with the crossbar 40, thereby making the main body 51 and the surface of the crossbar 40 fit tightly together, further improving the sealing effect.

[0058] Please see Figure 2 , Figure 7 and Figure 8 In the embodiments of this application, each battery module 20 includes a plurality of cells 22 arranged in an array. Each cell 22 has a terminal post 221 and an explosion-proof valve 223 respectively disposed on opposite sides along the Z direction. In the Z direction, a cell positioning bracket 21 is disposed on one side of the explosion-proof valve 223 corresponding to each battery module 20, and a CCS assembly 23 is disposed on one side of the terminal post 221 corresponding to each battery module 20. The CCS assembly 23 is connected to the terminal post 221 of each cell 22 of the battery module 20, thereby realizing the series and / or parallel connection of each cell 22 of the battery module 20. The two ends of the CCS assembly 23 along the Y direction have the above-mentioned general positive connection terminal 231 and general negative connection terminal 233 respectively, which serve as the positive and negative terminals of the battery module 20.

[0059] In a specific embodiment, each battery module 20 further includes multiple insulating sheets 225, which are attached one-to-one to the end face of each cell 22 of the battery module 20 that has a terminal post 221, to prevent the end of the cell 22 from short-circuiting with the CCS assembly 23. Furthermore, the insulating sheets 225 can be made of plastics such as polycarbonate, as long as they provide insulation; no limitation is made here.

[0060] Please see Figures 2 to 4 In a specific embodiment, each battery module 20 further includes a support column 60, the positions of which correspond one-to-one with the positions of each total positive connection terminal 231 and each total negative connection terminal 233. One end of each support column 60 is connected to the cell positioning bracket 21, and the other end is provided with a connecting part 603. The connecting part 603 is used to connect to the corresponding total positive connection terminal 231 or total negative connection terminal 233. That is, by using the support column 60 installed on the cell positioning bracket 21 to support, position and fix the total negative connection terminal 233, the assembly is simple and the connection is reliable, which is conducive to further improving the assembly efficiency. At the same time, the force on the connection terminal is transferred to the positioning bracket, avoiding structural deformation caused by the connection terminal relying solely on the CCS component for support.

[0061] Furthermore, one end of the jumper bar 40 is locked and fixed to the connection part 603 on a corresponding support column 60 by a fastener 605 to the main positive connection end 231 of one of the battery modules 20. In other words, the support column 60 installed on the cell positioning bracket 21 supports and positions one end of the jumper bar 40 and the main positive connection end 231, and is locked and fixed by the fastener 605. The assembly is simple and the connection is reliable, which helps to further improve the assembly efficiency. It also enables detachable connection, which is convenient for individual maintenance or replacement of the module in the later stage.

[0062] The other end of the jumper bar 40 is locked and fixed to the connection part 603 on a corresponding support column 60 by fasteners 605 to the total negative connection end 233 of another battery module 20. In other words, the other end of the jumper bar 40 and the total negative connection end 233 are supported and positioned by the support column 60 installed on the cell positioning bracket 21, and locked and fixed by fasteners 605. The assembly is simple, the connection is reliable, and it is conducive to further improving the assembly efficiency.

[0063] Furthermore, the connecting part 603 can be a threaded sleeve, and the fastener 605 is a threaded fastener that is threadedly connected to the threaded sleeve. The threaded fastener passes through one end of the jumper bar 40 and the main positive connection end 231 or the main negative connection end 233, and is threadedly connected to the threaded sleeve, thereby locking one end of the jumper bar 40 and the main positive connection end 231 or the main negative connection end 233 onto the threaded sleeve. This simplifies assembly, ensures reliable connection, and helps to further improve assembly efficiency.

[0064] Please see Figure 9 Specifically, in each battery module 20, a positioning hole 211 is provided on the side of the cell positioning bracket 21 facing the CCS assembly 23. One end of the support post 60 is inserted into the positioning hole 211 on the cell positioning bracket 21, thereby positioning the support post 60 using the positioning hole 211. It should be noted that the cross-sectional shape of the positioning hole 211 on the cell positioning bracket 21 matches the cross-sectional shape of the support post 60, for example, both are square, rectangular, or hexagonal, to ensure that the positioning hole 211 provides a better positioning effect for the support post 60.

[0065] Optionally, one end of the support column 60 is glued to the positioning hole 211 on the cell positioning bracket 21 by adhesive, thereby fixing the support column 60 to the cell positioning bracket 21.

[0066] Please see Figure 10As shown, in a specific embodiment, the jumper bar 40 includes a main body section 41 and two connecting sections 43 respectively connected to both ends of the main body section 41. The two connecting sections 43 are bent toward the same side of the main body section 41. The main body section 41 of the jumper bar 40 is disposed through the hollow hole 511 of the sealing sleeve 50. One of the connecting sections 43 of the jumper bar 40 is locked and fixed to the positive connection end 231 of one of the battery modules 20 by fasteners 605 on the connecting part 603 of the corresponding support column 60, thereby realizing the electrical connection between the connecting section 43 of the jumper bar 40 and the positive connection end 231 of the battery module 20; the other connecting section 43 of the jumper bar 40 is locked and fixed to the negative connection end 233 of another battery module 20 by fasteners 605 on the connecting part 603 of the corresponding support column 60, thereby realizing the electrical connection between the connecting end of the jumper bar 40 and the negative connection end 233 of the battery module 20.

[0067] Please see Figure 11 and Figure 12 In the embodiments of this application, the battery further includes a total positive key a2 and a total negative key a1, both disposed on one side of the battery case 10 in the X direction, and both the total positive key a2 and the total negative key a1 are located at one end of the battery case 10 in the Y direction. The two battery modules 20 are respectively named the first battery module 20a and the second battery module 20b. The total positive connection terminal 231 and the total negative connection terminal 233 of the first battery module 20a are respectively named the first total positive connection terminal 231a and the first total negative connection terminal 233a, and the total positive connection terminal 231 and the total negative connection terminal 233 of the second battery module 20b are respectively named the second total positive connection terminal 231b and the second total negative connection terminal 233b. The first positive connection terminal 231a and the first negative connection terminal 233a of the first battery module 20a are both located on the side of the first battery module 20a facing the positive key a2 and the negative key a1, and the second positive connection terminal 231b and the second negative connection terminal 233b of the second battery module 20b are both located on the side of the second battery module 20b facing the positive key a2 and the negative key a1.

[0068] The first total negative connection terminal 233a is electrically connected to the total negative key a1, the first total positive connection terminal 231a is electrically connected to the second total negative connection terminal 233b through the aforementioned jumper 40, and the second total positive connection terminal 231b is electrically connected to the total positive key a2. This allows the first battery module 20a and the second battery module 20b to be connected in series between the total positive key a2 and the total negative key a1, making the total positive key a2 and the total negative key a1 the positive and negative terminals of the battery, respectively, and connected to an external charging circuit and / or discharging circuit. Thus, by optimizing the positions of the six terminals—the first total positive connection terminal 231a, the first total negative connection terminal 233a, the second total positive connection terminal 231b, the second total negative connection terminal 233b, the total positive key a2, and the total negative key a1—the layout of the electrical connections between them is simplified, assembly difficulty is reduced, assembly efficiency is improved, and production capacity is further increased.

[0069] Specifically, in this embodiment, the battery box 10 has a first sidewall 13 along the Y direction near the first total negative connection terminal 233a and the second total positive connection terminal 231b. An electrical compartment 11 is disposed within this first sidewall 13. The electrical compartment 11 houses a high-voltage acquisition module (Battery Diagnostic and Safety Box, BDSB) 70 and a fuse 80. During maintenance, only the cover plate on the first sidewall 13 needs to be removed to independently replace the high-voltage acquisition module 70 or the fuse 80, eliminating the need to disassemble the module and reducing maintenance time. The first total negative connection terminal 233a of the first battery module 20a is electrically connected to the high-voltage acquisition module 70 via a first connecting strip b1. The high-voltage acquisition module 70 is electrically connected to the total negative key a1 via a second connecting strip b2. This achieves electrical connection between the first total negative connection terminal 233a of the first battery module 20a and the total negative key a1, and enables the high-voltage acquisition module 70 to monitor the voltage and / or current of the high-voltage circuit in real time. The second positive terminal 231b of the second battery module 20b is electrically connected to the fuse 80 via the third connector b3. The fuse 80 is electrically connected to the positive key a2 via the fourth connector b4. This achieves both electrical connection between the second positive terminal 231b of the second battery module 20b and the positive key a2, and allows the fuse 80 to be connected to the high-voltage circuit so that it can promptly cut off the circuit if the voltage or current of the high-voltage circuit is abnormal. The first positive terminal 231a of the first battery module 20a is directly electrically connected to the second negative terminal 233b of the second battery module 20b via a jumper 40 extending along the Z direction. This achieves electrical connection between the first positive terminal 231a of the first battery module 20a and the second negative terminal 233b of the second battery module 20b. Using the jumper 40 for direct connection eliminates the need for a copper busbar, resulting in a simple structure and convenient installation.

[0070] Furthermore, the first connecting strip b1 is disposed through the first sidewall 13 along the Z direction, and one end of the first connecting strip b1 located inside the electrical compartment 11 is electrically connected to the high-voltage acquisition module 70, while the other end of the first connecting strip b1 located outside the electrical compartment 11 is electrically connected to the first total negative connection terminal 233a of the first battery module 20a. This helps to reduce the length of the first connecting strip b1, reduce assembly difficulty, and improve assembly efficiency.

[0071] Furthermore, the second connecting strip b2 extends through the first sidewall 13 along the X direction, with one end of the second connecting strip b2 inside the electrical compartment 11 electrically connected to the high-voltage acquisition module 70, and the other end of the second connecting strip b2 outside the electrical compartment 11 electrically connected to the main negative key a1. This helps to reduce the length of the second connecting strip b2, reduce assembly difficulty, and improve assembly efficiency.

[0072] Furthermore, the third connecting strip b3 extends through the first sidewall 13 along the Z direction, with one end of the third connecting strip b3 inside the electrical compartment 11 electrically connected to the fuse 80, and the other end of the third connecting strip b3 outside the electrical compartment 11 electrically connected to the second main positive connection terminal 231b of the second battery module 20b. This helps to reduce the length of the third connecting strip b3, reduce assembly difficulty, and improve assembly efficiency.

[0073] Furthermore, the fourth connecting strip b4 extends through the first sidewall 13 along the Z direction, with one end of the fourth connecting strip b4 inside the electrical compartment 11 electrically connected to the fuse 80, and the other end of the fourth connecting strip b4 outside the electrical compartment 11 electrically connected to the main positive key a2. This reduces the length of the fourth connecting strip b4, lowers assembly difficulty, and improves assembly efficiency.

[0074] Specifically, in this embodiment, there are four support columns 60, and the positions of the four support columns 60 correspond to the first positive connection end 231a, the first negative connection end 233a, the second positive connection end 231b, and the second negative connection end 233b, respectively. One end of each support column 60 is connected to the cell positioning bracket 21, and the first positive connection end 231a, the first negative connection end 233a, the second positive connection end 231b, and the second negative connection end 233b are respectively locked and fixed to the connecting part 603 of their respective support columns 60 by fasteners 605.

[0075] Specifically, the four support columns 60 are named first support column 60a, second support column 60b, third support column 60c, and fourth support column 60d, respectively. One end of the first support column 60a is fixed to the cell positioning bracket 21 through the positioning hole 211. The first general negative connection end 233a and the first connecting row b1 are supported at the other end of the first support column 60a and are locked and fixed to the connecting part 603 of the first support column 60a by fasteners 605.

[0076] One end of the second support column 60b is fixed to the cell positioning bracket 21 through the positioning hole 211. The second main positive connection end 231b and the third connection row b3 are supported at the other end of the second support column 60b and are locked and fixed to the connection part 603 of the second support column 60b by the fastener 605.

[0077] One end of the third support column 60c is fixed to the cell positioning bracket 21 through the positioning hole 211. The first general positive connection end 231a and the connection section 43 of one end of the jumper bar 40 are supported on the other end of the third support column 60c and locked and fixed to the connection part 603 of the third support column 60c by the fastener 605.

[0078] One end of the fourth support column 60d is fixed to the cell positioning bracket 21 through the positioning hole 211. The second total negative connection end 233b and the connection section 43 at the other end of the jumper bar 40 are supported on the other end of the fourth support column 60d and locked and fixed to the connection part 603 of the fourth support column 60d by the fastener 605.

[0079] 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.

[0080] 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, characterized in that, include: Battery box (10); Two battery modules (20) are both disposed inside the battery box (10) and are stacked opposite each other along the Z direction. Each battery module (20) has a total positive connection terminal (231) and a total negative connection terminal (233) disposed on the same side along the X direction. The total positive connection terminal (231) of one battery module (20) and the total negative connection terminal (233) of the other battery module (20) are opposite each other along the Z direction. The X direction is the length direction of the battery box (10) and the Z direction is the height direction of the battery box (10). A partition (30) is disposed between the two battery modules (20), and a through hole (31) is provided on the partition (30); A jumper bar (40) is inserted through the through hole (31) along the Z direction, and one end of the jumper bar (40) is electrically connected to the general positive connection terminal (231) of one of the battery modules (20), and the other end is electrically connected to the general negative connection terminal (233) of the other battery module (20); and A sealing sleeve (50) is fitted between the inner wall of the through hole (31) and the crossbar (40).

2. The battery according to claim 1, characterized in that, The sealing sleeve (50) includes a main body (51) and two fitting parts (53) respectively connected to opposite ends of the main body (51). The main body (51) is fitted inside the through hole (31), and the two fitting parts (53) are respectively fitted to opposite side surfaces of the partition (30). The main body (51) has a hollow hole (511) that passes through its opposite ends. The cross-connecting bar (40) is provided through the hollow hole (511). The hollow hole (511) and the cross-section of the cross-connecting bar (40) are similar.

3. The battery according to claim 2, characterized in that, The main body (51) is interference-fitted with the inner wall of the through hole (31); and / or The inner wall of the hollow hole (511) is interference-fitted with the crossbar (40).

4. The battery according to claim 1, characterized in that, Each of the battery modules (20) includes a plurality of cells (22) arranged in an array, and each of the cells (22) includes a terminal post (221) and an explosion-proof valve (223) respectively disposed on opposite sides along the Z direction; In the Z direction, each battery module (20) is provided with a cell positioning bracket (21) on one side corresponding to the explosion-proof valve (223), and each battery module (20) is provided with a CCS assembly (23) on one side corresponding to the pole (221). The CCS assembly (23) has the total positive connection terminal (231) and the total negative connection terminal (233).

5. The battery according to claim 4, characterized in that, Each battery module (20) further includes a support column (60). The positions of the multiple support columns (60) correspond one-to-one with the positions of each of the total positive connection terminals (231) and each of the total negative connection terminals (233). One end of the support column (60) is connected to the cell positioning bracket (21), and the other end is provided with a connecting part (601). The connecting part (601) is used to connect to the corresponding total positive connection terminal (231) or the total negative connection terminal (233).

6. The battery according to claim 5, characterized in that, One end of the jumper bar (40) is locked and fixed to the connection part (603) of the corresponding support column (60) by fasteners (605) at the main positive connection end (231) of one of the battery modules (20); The other end of the jumper bar (40) is locked and fixed to the connection part (603) of the corresponding support column (60) by fasteners (605) to the total negative connection end (233) of another battery module (20).

7. The battery according to claim 5, characterized in that, The cell positioning bracket (21) has a positioning hole (211) on the side facing the CCS assembly (23); One end of the support column (60) is inserted into the positioning hole (211); and / or, one end of the support column (60) is glued into the positioning hole (211) by adhesive.

8. The battery according to claim 6, characterized in that, The connecting part (601) is a threaded sleeve, and the fastener (605) is a threaded fastener that is threadedly connected to the threaded sleeve.

9. The battery according to claim 1, characterized in that, The crossbar (40) includes a main body section (41) and two connecting sections (43) respectively connected to both ends of the main body section (41), the two connecting sections (43) being bent toward the same side of the main body section (41); The main body segment (41) is disposed through the sealing sleeve (50), one of the connecting segments (43) is electrically connected to the positive connection terminal (231) of one of the battery modules (20), and the other connecting segment (43) is electrically connected to the negative connection terminal (233) of the other battery module (20).

10. An electrical device, characterized in that, Includes the battery as described in any one of claims 1 to 9.

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