Battery and electric device

Abstract

The invention relates to a battery and an electric device. The battery comprises a battery box; the total positive key position and the total negative key position are both arranged on one side of the battery box in the X direction, and the total positive key position and the total negative key position are both located at one end of the battery box in the Y direction; the first battery module and the second battery module are accommodated in the battery box and are stacked in the Z direction; the first battery module is provided with a first total positive connecting end and a first total negative connecting end, the second battery module is provided with a second total positive connecting end and a second total negative connecting end, the first total negative connecting end corresponds to the second total positive connecting end in position, and the first total positive connecting end corresponds to the second total negative connecting end in position; the first total negative connecting end is electrically connected with the total negative key position, the first total positive connecting end is electrically connected with the second total negative connecting end, and the second total positive connecting end is electrically connected with the total positive key position.

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, and each battery module contains multiple individual battery cells. The individual battery cells within the same battery module are connected via copper busbars, achieving series and parallel connections. Similarly, the battery modules themselves are connected via copper busbars, achieving series and parallel connections between them.

[0003] With the widespread application of batteries, the requirements for battery integration and energy density are becoming increasingly stringent, thus placing higher demands on the internal layout, components, and electrical connections of batteries. Existing batteries suffer from space constraints affecting internal components, leading to assembly difficulties, low assembly efficiency, and severely impacting production capacity. Summary of the Invention

[0004] Therefore, it is necessary to provide a battery and power supply device that optimizes the high-voltage layout, reduces assembly difficulty, improves assembly efficiency, and thus increases production capacity 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] Both the main positive key and the main negative key are located on one side of the battery compartment in the X direction, and both are located at one end of the battery compartment along the Y direction;

[0009] The first battery module and the second battery module are both housed in the battery box and are stacked along the Z direction. The first battery module has a first positive connection terminal and a first negative connection terminal on the side facing the main positive key and the main negative key. The second battery module has a second positive connection terminal and a second negative connection terminal on the side facing the main positive key and the main negative key. The positions of the first negative connection terminal and the second positive connection terminal are corresponding.

[0010] Wherein, the first positive connection terminal and the first negative connection terminal are respectively disposed at intervals along the Y direction at both ends of the first battery module, and the second positive connection terminal and the second negative connection terminal are respectively disposed at intervals along the Y direction at both ends of the second battery module. The first negative connection terminal is electrically connected to the negative key, the first positive connection terminal is electrically connected to the second negative connection terminal, and the second positive connection terminal is electrically connected to the positive key. The X direction is the length direction of the battery box, the Y direction is the width direction of the battery box, and the Z direction is the height direction of the battery box.

[0011] In some embodiments, an electrical compartment is provided in the first side wall of the battery box along the Y direction near the first total negative connection terminal and the second total positive connection terminal, and a high voltage acquisition module and a fuse are installed in the electrical compartment;

[0012] The first main negative connection terminal is electrically connected to the high voltage acquisition module through the first connection bar, and the high voltage acquisition module is electrically connected to the main negative key through the second connection bar;

[0013] The second main positive connection terminal is electrically connected to the fuse via the third connection bar, and the fuse is electrically connected to the main positive key via the fourth connection bar;

[0014] The first positive terminal is directly electrically connected to the second negative terminal via a jumper bar extending along the Z direction.

[0015] In some embodiments, both the first battery module and the second battery module include a plurality of battery cells arranged in an array, each battery cell including a terminal post and an explosion-proof valve respectively disposed on opposite sides along the Z direction; in the Z direction, the first battery module and the second battery module are arranged opposite to each other on the side with the explosion-proof valve;

[0016] The first CCS component and the second CCS component are respectively disposed at opposite ends of the first battery module and the second battery module along the Z direction, so as to be connected to the terminals of the cells of the first battery module and the second battery module respectively; the first CCS component is provided with a first positive connection terminal and a first negative connection terminal at its two ends along the Y direction, and the second CCS component is provided with a second positive connection terminal and a second negative connection terminal at its two ends along the Y direction.

[0017] In some embodiments, the battery further includes a first cell positioning bracket and a second cell positioning bracket, disposed between the first battery module and the second battery module to respectively position the first battery module and the second battery module. The battery also includes support columns, the positions of which correspond to the first total positive connection terminal, the first total negative connection terminal, the second total positive connection terminal and the second total negative connection terminal respectively.

[0018] One end of the support column is connected to the first cell positioning bracket or the second cell positioning bracket, and the other end is provided with a fixing hole. The first positive connection end, the first negative connection end, the second positive connection end and the second negative connection end are respectively connected to their corresponding support columns through the fixing hole.

[0019] In some embodiments, the first main negative connection end and the first connection row are locked and fixed to the fixing holes of the corresponding support column by fasteners;

[0020] The second main positive connection end and the third connection row are locked and fixed to the fixing holes of the corresponding support columns by the fasteners;

[0021] The first main positive connection end and one end of the jumper bar are locked and fixed to the fixing hole of the corresponding support column by the fastener;

[0022] The second main negative connection end and the other end of the jumper are locked and fixed to the fixing hole of the corresponding support column by the fastener.

[0023] In some embodiments, the battery further includes a partition disposed between the first cell positioning bracket and the second cell positioning bracket, the partition having a first through hole for the jumper bar to pass through.

[0024] In some embodiments, the battery further includes a first sealing sleeve, which is fitted between the inner wall of the first through hole and the jumper bar.

[0025] In some embodiments, the first sealing sleeve includes a first main body and two first fitting parts respectively connected to opposite ends of the first main body. The first main body is fitted inside the first through hole, and the two first fitting parts are respectively fitted to opposite side surfaces of the partition.

[0026] The first main body has a first hollow hole that passes through its opposite ends, and the cross-connecting strip passes through the first hollow hole. The first hollow hole is shaped to match the cross-section of the cross-connecting strip.

[0027] In some embodiments, the first main body portion is interference-fitted with the inner wall of the first through hole; and / or

[0028] The inner wall of the first perforated hole is interference-fitted with the cross-connector.

[0029] To achieve the above objectives, the second aspect provides the following technical solution:

[0030] An electrical device comprising a battery as described in the first aspect above.

[0031] Compared with the prior art, this application has the following beneficial effects:

[0032] In the aforementioned battery and electrical device, the first total negative connection terminal of the first battery module is electrically connected to the total negative key, the first total positive connection terminal of the first battery module is electrically connected to the second total negative connection terminal of the second battery module, and the second total positive connection terminal of the second battery module is electrically connected to the total positive key. This allows the first and second battery modules to be connected in series between the total positive and total negative keys, making the total positive and total negative keys the positive and negative terminals of the battery, respectively, and connected to an external charging and / or discharging circuit. Optimizing the positions of the six terminals—the first total positive connection terminal, the first total negative connection terminal, the second total positive connection terminal, the second total negative connection terminal, the total positive key, and the total negative key—simplifies the layout of the electrical connections between them, reduces assembly difficulty, improves assembly efficiency, and further increases production capacity. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the battery structure in one embodiment of this application;

[0034] Figure 2 for Figure 1 The diagram shown illustrates the structure of the battery (the battery box and wiring harness are omitted).

[0035] Figure 3 for Figure 2 A side view of the battery shown;

[0036] Figure 4 for Figure 3 The battery shown is a cross-sectional view along the AA direction;

[0037] Figure 5 for Figure 1 The diagram shown is a structural schematic of the battery from another perspective (the battery box and wiring harness are omitted).

[0038] Figure 6 for Figure 5 The diagram shows the structure of the battery from another perspective.

[0039] Figure 7 for Figure 1The diagram shows the structural structure of the battery cell.

[0040] Figure 8 for Figure 7 A schematic diagram of the battery cell from another perspective;

[0041] Figure 9 for Figure 1 A partial structural diagram of the battery separator shown;

[0042] Figure 10 for Figure 1 A schematic diagram of the structure of the first sealing sleeve of the battery is shown.

[0043] Figure 11 for Figure 10 A cross-sectional view of the first sealing sleeve shown;

[0044] Figure 12 for Figure 1 A partial structural schematic diagram of the first cell positioning bracket of the battery shown.

[0045] Figure 13 for Figure 1 The diagram shown illustrates the structure of the battery (the battery compartment is omitted).

[0046] Figure 14 for Figure 13 A schematic diagram of the wiring harness for the battery shown.

[0047] Figure 15 for Figure 13 The diagram shows the structure of the second sealing sleeve of the battery.

[0048] Figure 16 for Figure 13 The diagram shows the structure of the third sealing sleeve of the battery. Detailed Implementation

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] Please see Figures 1 to 6 This application provides a battery, including a battery case 10, a main positive button a2, a main negative button a1, a first battery module 20a, and a second battery module 20b. The main positive button a2 and the main negative button a1 are both located on one side of the battery case 10 in the X direction, and both are located at one end of the battery case 10 in the Y direction. The first battery module 20a and the second battery module 20b are both housed within the battery case 10 and are stacked along the Z direction. The first battery module 20a has a first main positive connection terminal 233a and a first main negative connection terminal 231a; optionally, the first main positive connection terminal 233a and the first main negative connection terminal 231a are both located on the side of the first battery module 20a facing the main positive button a2 and the main negative button a1, and are spaced apart along the Y direction. The second battery module 20b has a second overall positive connection terminal 233b and a second overall negative connection terminal 231b. Optionally, both the second overall positive connection terminal 233b and the second overall negative connection terminal 231b are located on the side of the second battery module 20b facing the overall positive key a2 and the overall negative key a1, and are spaced apart along the Y direction. The positions of the first overall negative connection terminal 231a and the second overall positive connection terminal 233b are opposite to each other in the Z direction.

[0056] In this embodiment, a first positive connection terminal 233a and a first negative connection terminal 231a are spaced apart along the Y direction at both ends of the first battery module 20a, and a second positive connection terminal 233b and a second negative connection terminal 231b are spaced apart along the Y direction at both ends of the second battery module 20b. The first negative connection terminal 231a is electrically connected to the negative key a1, the first positive connection terminal 233a is electrically connected to the second negative connection terminal 231b, and the second positive connection terminal 233b is electrically connected to the positive key a2. 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.

[0057] In the aforementioned battery, the first total negative connection terminal 231a of the first battery module 20a is electrically connected to the total negative key a1, the first total positive connection terminal 233a of the first battery module 20a is electrically connected to the second total negative connection terminal 231b of the second battery module 20b, and the second total positive connection terminal 233b of the second battery module 20b is electrically connected to the total positive key a2. This achieves the connection of the first battery module 20a and the second battery module 20b 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 serve as the positive and negative terminals of the battery, respectively, and connected to an external charging circuit and / or discharging circuit. Optimizing the positions of the six terminals—the first total positive connection terminal 233a, the first total negative connection terminal 231a, the second total positive connection terminal 233b, the second total negative connection terminal 231b, the total positive key a2, and the total negative key a1—simplifies the layout of the electrical connections between them, reduces assembly difficulty, improves assembly efficiency, and further increases production capacity.

[0058] In the embodiments of this application, the battery box 10 has a first sidewall 13 along the Y direction near the first total negative connection terminal 231a and the second total positive connection terminal 233b, and an electrical compartment 11 is disposed within the first sidewall 13. The electrical compartment 11 houses a high-voltage acquisition module (Battery Diagnostic and Safety Box, BDSB) 30 and a fuse 40. When maintenance is required, only the cover plate on the first sidewall 13 needs to be removed to independently replace the high-voltage acquisition module 30 or the fuse 40, without disassembling the module, thus shortening maintenance time. Simultaneously, the independent electrical compartment 11 achieves physical isolation between the high-voltage components and the battery module, mitigating the impact of module thermal runaway on the high-voltage acquisition module 30 and the fuse 40. The first negative terminal 231a of the first battery module 20a is electrically connected to the high-voltage acquisition module 30 via the first connector 31. The high-voltage acquisition module 30 is electrically connected to the negative key a1 via the second connector 32. This achieves the electrical connection between the first negative terminal 231a of the first battery module 20a and the negative key a1, and enables the high-voltage acquisition module 30 to monitor the voltage and / or current of the high-voltage circuit in real time. The second positive terminal 233b of the second battery module 20b is electrically connected to the fuse 40 via the third connector 41. The fuse 40 is electrically connected to the positive key a2 via the fourth connector 42. This achieves the electrical connection between the second positive terminal 233b of the second battery module 20b and the positive key a2, and also connects the fuse 40 to the high-voltage circuit, allowing the fuse 40 to cut off the circuit in time if the voltage or current of the high-voltage circuit is abnormal. The first positive connection terminal 233a of the first battery module 20a is directly electrically connected to the second negative connection terminal 231b of the second battery module 20b through a jumper bus 60 extending along the Z direction. This realizes the electrical connection between the first positive connection terminal 233a of the first battery module 20a and the second negative connection terminal 231b of the second battery module 20b. The direct connection using the jumper bus 60 eliminates the need for a copper busbar, resulting in a simple structure and convenient installation. At the same time, the Z-direction path connection can shorten the length of the jumper bus 60 and reduce the loop resistance.

[0059] Please see Figure 5 Furthermore, the first connecting strip 31 is disposed through the first sidewall 13 along the Z direction, and one end of the first connecting strip 31 located inside the electrical compartment 11 is electrically connected to the high-voltage acquisition module 30, while the other end of the first connecting strip 31 located outside the electrical compartment 11 is electrically connected to the first total negative connection terminal 231a of the first battery module 20a. This helps to reduce the length of the first connecting strip 31, reduce assembly difficulty, and improve assembly efficiency.

[0060] Furthermore, the second connecting strip 32 extends through the first sidewall 13 along the X direction, with one end of the second connecting strip 32 inside the electrical compartment 11 electrically connected to the high-voltage acquisition module 30, and the other end of the second connecting strip 32 outside the electrical compartment 11 electrically connected to the main negative key a1. This helps to reduce the length of the second connecting strip 32, reduce assembly difficulty, and improve assembly efficiency.

[0061] Furthermore, the third connecting strip 41 extends through the first sidewall 13 along the Z direction, with one end of the third connecting strip 41 inside the electrical compartment 11 electrically connected to the fuse 40, and the other end of the third connecting strip 41 outside the electrical compartment 11 electrically connected to the second main positive connection terminal 233b of the second battery module 20b. This helps to reduce the length of the third connecting strip 41, reduce assembly difficulty, and improve assembly efficiency.

[0062] Furthermore, the fourth connecting strip 42 extends through the first sidewall 13 along the Z direction, with one end of the fourth connecting strip 42 inside the electrical compartment 11 electrically connected to the fuse 40, and the other end of the fourth connecting strip 42 outside the electrical compartment 11 electrically connected to the main positive key a2. This reduces the length of the fourth connecting strip 42, lowers assembly difficulty, and improves assembly efficiency.

[0063] Please see Figures 5 to 8 In some embodiments, both the first battery module 20a and the second battery module 20b include a plurality of cells 22 arranged in an array. Each cell 22 includes a terminal post 221 and an explosion-proof valve 223 respectively disposed at opposite ends along the Z direction. In the Z direction, the side of the first battery module 20a with the explosion-proof valve 223 and the side of the second battery module 20b with the explosion-proof valve 223 are arranged opposite to each other. In this way, the ejected material in the event of thermal runaway is concentrated between the two modules, avoiding direct impact on the side wall of the battery box or external components. The first battery module 20a also includes a first CCS assembly 23a, which is disposed on the side of each cell 22 of the first battery module 20a away from the second battery module 20b, and the first CCS assembly 23a is connected to the terminal post 221 of each cell 22 of the first battery module 20a, thereby realizing the series and / or parallel connection of each cell 22 of the first battery module 20a. The second battery module 20b also includes a second CCS component 23b, which is disposed on the side of each cell 22 of the second battery module 20b away from the first battery module 20a, and the second CCS component 23b is connected to the terminal post 221 of each cell 22 of the second battery module 20b, thereby realizing the series and / or parallel connection of each cell 22 of the second battery module 20b.

[0064] The first CCS component 23a has a first positive connection terminal 233a and a first negative connection terminal 231a at both ends along the Y direction, which serve as the positive and negative terminals of the first battery module 20a, respectively. The second CCS component 23b has a second positive connection terminal 233b and a second negative connection terminal 231b at both ends along the Y direction, which serve as the positive and negative terminals of the second battery module 20b, respectively.

[0065] Specifically, in the embodiments, refer to Figure 7 As shown, both the first battery module 20a and the second battery module 20b include multiple insulating sheets 225. These insulating sheets 225 are attached one-to-one to the end face of each cell 22 in the first battery module 20a and the second battery module 20b that has a terminal post 221, to prevent the end of the cell 22 from short-circuiting with the first CCS assembly 23a and the second CCS assembly 23b. The insulating sheets 225 are annular and avoid the terminal posts 221. Furthermore, the insulating sheets 225 can be made of plastics such as polycarbonate, as long as they provide insulation; no limitation is made here.

[0066] Please continue reading Figures 1 to 6 In a specific embodiment, the battery further includes a first cell positioning bracket 21a and a second cell positioning bracket 21b. Both the first cell positioning bracket 21a and the second cell positioning bracket 21b are disposed between the first battery module 20a and the second battery module 20b. The first cell positioning bracket 21a is used to position each cell 22 of the first battery module 20a, and the second cell positioning bracket 21b is used to position each cell 22 of the second battery module 20b.

[0067] The battery also includes multiple support posts 50, each positioned corresponding to the first positive connection terminal 233a, the first negative connection terminal 231a, the second positive connection terminal 233b, and the second negative connection terminal 231b. One end of each support post 50 is connected to the first cell positioning bracket 21a or the second cell positioning bracket 21b, and the other end is provided with a fixing hole 501. The first positive connection terminal 233a, the first negative connection terminal 231a, the second positive connection terminal 233b, and the second negative connection terminal 231b are respectively connected to their corresponding support posts 50 through the fixing holes 501. By setting support posts 50 at corresponding positions on the first positive connection terminal 233a, the first negative connection terminal 231a, the second positive connection terminal 233b, and the second negative connection terminal 231b, the force on the connection end is transferred to the positioning bracket, avoiding structural deformation caused by the connection end relying solely on the CCS component for support, and increasing the connection strength.

[0068] Furthermore, the first main negative connection end 231a and the first connecting row 31 are locked and fixed to the fixing holes 501 of the corresponding support column 50 by fasteners 505. That is to say, the first main negative connection end 231a and the first connecting row 31 are supported and positioned by the support column 50 installed on the first cell positioning bracket 21a, and locked and fixed by fasteners 505. The assembly is simple, the connection is reliable, and it is conducive to further improving the assembly efficiency.

[0069] The second main positive connection terminal 233b and the third connection row 41 are locked and fixed to the fixing holes 501 of the corresponding support column 50 by fasteners 505. That is to say, the second main positive connection terminal 233b and the third connection row 41 are supported and positioned by the support column 50 installed on the second cell positioning bracket 21b, and locked and fixed by fasteners 505. 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.

[0070] The first main positive connection terminal 233a and one end of the jumper bar 60 are locked and fixed to the fixing hole 501 of the corresponding support column 50 by fasteners 505. That is to say, the first main positive connection terminal 233a and one end of the jumper bar 60 are supported and positioned by the support column 50 installed on the first cell positioning bracket 21a, and locked and fixed by fasteners 505. The assembly is simple, the connection is reliable, and it is conducive to further improving the assembly efficiency.

[0071] The second main negative connection terminal 231b and the other end of the jumper bar 60 are locked and fixed to the fixing hole 501 of the corresponding support column 50 by fasteners 505. That is to say, the second main negative connection terminal 231b and the other end of the jumper bar 60 are supported and positioned by the support column 50 installed on the second cell positioning bracket 21b, and locked and fixed by fasteners 505. The assembly is simple, the connection is reliable, and it is conducive to further improving the assembly efficiency.

[0072] Specifically Figure 5 and Figure 6 In the illustrated embodiment, there are four support columns 50, named first support column 50a, second support column 50b, third support column 50c, and fourth support column 50d. One end of the first support column 50a is connected to the first cell positioning bracket 21a, and the first general negative connection end 231a and the first connection row 31 are supported at the other end of the first support column 50a (i.e., the end with the fixing hole 501) and locked in place by fasteners 505. Further, the end of the first support column 50a facing away from the first cell positioning bracket 21a is provided with a threaded sleeve 503 (see...). Figure 4The threaded hole on the threaded sleeve 503 is the aforementioned fixing hole 501. The fastener 505 passes through the first main negative connection end 231a and the first connecting row 31, and is threadedly connected to the fixing hole 501 of the threaded sleeve 503, thereby locking and fixing the first main negative connection end 231a and the first connecting row 31 to the threaded sleeve 503.

[0073] One end of the second support column 50b is connected to the second cell positioning bracket 21b. The second main positive connection end 233b and the third connecting strip 41 are supported at the other end of the second support column 50b (i.e., the end with the fixing hole 501) and are locked in place by fasteners 505. Further, a threaded sleeve 503 is provided at the end of the second support column 50b facing away from the second cell positioning bracket 21b. The threaded hole on the threaded sleeve 503 is the aforementioned fixing hole 501. The fasteners 505 pass through the second main positive connection end 233b and the third connecting strip 41 and are threaded into the fixing hole 501 of the threaded sleeve 503, thereby locking the second main positive connection end 233b and the third connecting strip 41 onto the threaded sleeve 503.

[0074] One end of the third support column 50c is connected to the first cell positioning bracket 21a. The first main positive connection end 233a and one end of the jumper bar 60 are supported on the other end of the third support column 50c (i.e., the end with the fixing hole 501), and are locked in place by fasteners 505. Further, a threaded sleeve 503 is provided on the end of the third support column 50c facing away from the first cell positioning bracket 21a. The threaded hole on the threaded sleeve 503 is the aforementioned fixing hole 501. Fasteners 505 pass through the first main positive connection end 233a and one end of the jumper bar 60, and are threaded into the fixing hole 501 of the threaded sleeve 503, thereby locking the first main positive connection end 233a and one end of the jumper bar 60 onto the threaded sleeve 503.

[0075] One end of the fourth support column 50d is connected to the second cell positioning bracket 21b. The other end of the second total negative connection end 231b and the jumper bar 60 are supported on the other end of the fourth support column 50d (i.e., the end with the fixing hole 501) and locked in place by fasteners 505. Further, a threaded sleeve 503 is provided on the end of the fourth support column 50d facing away from the second cell positioning bracket 21b. The threaded hole on the threaded sleeve 503 is the aforementioned fixing hole 501. Fasteners 505 pass through the second total negative connection end 231b and the other end of the jumper bar 60 and are threaded into the fixing hole 501 of the threaded sleeve 503, thereby locking the second total negative connection end 231b and the other end of the jumper bar 60 onto the threaded sleeve 503.

[0076] Furthermore, two positioning holes 211 are formed on the first cell positioning bracket 21a (see... Figure 13 One end of the first support post 50a and one end of the third support post 50c are respectively inserted into two positioning holes 211 on the first cell positioning bracket 21a, thereby using the two positioning holes 211 to position the first support post 50a and the third support post 50c. It should be noted that the cross-sectional shape of the positioning holes 211 on the first cell positioning bracket 21a matches the cross-sectional shape of the first support post 50a and the third support post 50c, for example, both are square, rectangular or hexagonal, to ensure better positioning effect of the first support post 50a and the third support post 50c.

[0077] Optionally, one end of the first support column 50a and one end of the third support column 50c are respectively glued to the two positioning holes 211 on the first cell positioning bracket 21a by adhesive, thereby fixing the first support column 50a and the second support column 50b on the first cell positioning bracket 21a.

[0078] Furthermore, the second cell positioning bracket 21b also has two positioning holes 211. One end of the second support column 50b and one end of the fourth support column 50d are respectively inserted into the two positioning holes 211 on the second cell positioning bracket 21b, thereby positioning the second support column 50b and the fourth support column 50d using the two positioning holes 211. It should be noted that the cross-sectional shape of the positioning holes 211 on the second cell positioning bracket 21b matches the cross-sectional shape of the second support column 50b and the fourth support column 50d, for example, both are square, rectangular or hexagonal, to ensure the positioning effect of the second support column 50b and the fourth support column 50d.

[0079] Optionally, one end of the second support column 50b and one end of the fourth support column 50d are respectively glued to the two positioning holes 211 on the second cell positioning bracket 21b by adhesive, thereby fixing the second support column 50b and the fourth support column 50d on the second cell positioning bracket 21b.

[0080] In a specific embodiment, the battery further includes a partition 70 disposed between the first cell positioning bracket 21a and the second cell positioning bracket 21b, that is, the partition 70 divides the inner cavity of the battery box 10 into a first part and a second part. The first battery module 20a is located in the first part, and the second battery module 20b is located in the second part. Using the partition 70 to isolate the two battery modules can reduce the propagation of ejected material between the two modules and delay cascading thermal runaway. Simultaneously, the first cell positioning bracket 21a, the second cell positioning bracket 21b, and the partition 70 can achieve mutual positioning, ensuring the parallelism of the two modules in the Z direction, avoiding uneven stress on the jumper bars caused by stacking misalignment. The partition also serves as a potting compound carrier, enabling the modules to form a rigid connection with the inner cavity of the box, improving the overall vibration and shock resistance of the battery. The partition 70 has a first through hole 71 for the jumper bars 60 to pass through (see...). Figure 9 The jumper bar 60 is positioned such that one end is located within the first section and connected to the first positive terminal 233a of the first battery module 20a; the other end is located within the second section and connected to the second negative terminal 231b of the second battery module 20b. Thus, by utilizing the jumper bar 60 through the first through hole 71 on the separator 70, the first positive terminal 233a of the first battery module 20a and the second negative terminal 231b of the second battery module 20b are electrically connected via the jumper bar 60. This design is simple, has low assembly difficulty, and helps to further improve assembly efficiency.

[0081] It should be noted that the side of the separator 70 facing the first battery module 20a needs to be potted with adhesive to fix and insulate the individual cells 22 of the first battery module 20a. Similarly, the side of the separator 70 facing the second battery module 20b also needs to be potted with adhesive to fix and insulate the individual cells 22 of the second battery module 20b. However, when potting adhesive on one side of the separator 70, the adhesive may overflow through the first through hole 71 to the other side of the separator 70, which may adversely affect the subsequent potting on the other side of the separator 70. To avoid adhesive overflow from the first through hole 71 and improve the potting quality, in some embodiments, a first sealing sleeve 61 is used to seal the first through hole 71. Specifically, the first sealing sleeve 61 is fitted between the inner wall of the first through hole 71 and the jumper bar 60 to seal the gap between the inner wall of the first through hole 71 and the jumper bar 60, thereby preventing adhesive overflow at the first through hole 71.

[0082] Please see Figure 10 and Figure 11Furthermore, the first sealing sleeve 61 includes a first main body 611 and two first fitting portions 613 respectively connected to opposite ends of the first main body 611. The first main body 611 is fitted inside the first through hole 71, and the two first fitting portions 613 are respectively fitted to opposite side surfaces of the partition 70, thereby preventing adhesive from overflowing along the inner wall of the first through hole 71. The first main body 611 has a first hollow hole 6110 penetrating its opposite ends, and the cross-connector 60 is provided through the first hollow hole 6110 of the first main body 611, and the first hollow hole 6110 is shaped to match the cross-section of the cross-connector 60, so that the inner wall of the first hollow hole 6110 is tightly fitted to the cross-connector 60, thereby preventing adhesive from overflowing along the surface of the cross-connector 60.

[0083] Furthermore, the first main body 611 is interference-fitted with the inner wall of the first through hole 71, thereby making the first main body 611 fit tightly with the inner wall of the first through hole 71, further improving the sealing effect.

[0084] Furthermore, the inner wall of the first perforated hole 6110 is interference-fitted with the jumper bar 60, thereby ensuring a tight fit between the first main body 611 and the surface of the jumper bar 60, further enhancing the sealing effect. In addition, this design can also fix the jumper bar 60, preventing loosening of the connection due to vibration.

[0085] Please see Figure 13 and Figure 14 In embodiments of this application, the battery further includes a battery management system, a first acquisition harness 81, and a second acquisition harness 82 disposed within the battery case 10. One end of the first acquisition harness 81 has multiple first acquisition sub-lines 811, each of which is electrically connected to the first CCS component 23a of the first battery module 20a. The other end of the first acquisition harness 81 has multiple second acquisition sub-lines 813, each of which is electrically connected to the battery management system disposed within the electrical compartment. Thus, each first acquisition sub-line 811 transmits information such as voltage, current, or temperature of the first battery module 20a to the battery management system.

[0086] A second through hole 73 is provided on the partition 70 (see Figure 9 The second acquisition harness 82 passes through the second through hole 73 on the partition 70, such that the first end of the second acquisition harness 82 is located on the side of the partition 70 facing the first battery module 20a, and the second end of the second acquisition harness 82 is located on the side of the partition 70 facing the second battery module 20b. The second end of the second acquisition harness 82 has a plurality of third acquisition sub-wires 821, each of which is electrically connected to the second CCS component 23b of the second battery module 20b. The first end of the second acquisition harness 82 has a plurality of fourth acquisition sub-wires 823, each of which is electrically connected to the battery management system.

[0087] Furthermore, the first CCS component 23a has multiple first connectors at the end facing the total positive key position a2 and the total negative key position a1, and each first acquisition sub-line 811 is plugged into and fixed to the multiple first connectors in a one-to-one correspondence. The second CCS component 23b has multiple second connectors at the end facing the total positive key position a2 and the total negative key position a1, and each third acquisition sub-line 821 is plugged into and fixed to the multiple second connectors in a one-to-one correspondence.

[0088] Furthermore, the second acquisition harness 82 located on the side of the separator 70 facing the first battery module 20a is combined with the first acquisition harness 81 to form a bus harness 80, which helps to simplify harness routing and installation, further reduce assembly difficulty, improve efficiency, and also reduce the risk of harness tangling.

[0089] Please see Figure 13 and Figure 15 In a specific embodiment, the battery also includes a second sealing sleeve 84, which is fitted between the inner wall of the second through hole 73 and the second acquisition wire harness 82, thereby sealing the gap between the inner wall of the second through hole 73 and the second acquisition wire harness 82, and thus preventing adhesive overflow at the second through hole 73.

[0090] Furthermore, the second sealing sleeve 84 includes a second main body 841 and two second fitting portions 843 respectively connected to opposite ends of the second main body 841. The second main body 841 is fitted inside the second through hole 73, and the two second fitting portions 843 are respectively fitted to opposite side surfaces of the partition 70, thereby preventing adhesive from overflowing along the inner wall of the second through hole 73. The second main body 841 has a second hollow hole 845 penetrating its opposite ends. The second acquisition cable 82 is provided through the second hollow hole 845 of the second main body 841, and the second hollow hole 845 is configured to conform to the cross-section of the second acquisition cable 82, so that the inner wall of the second hollow hole 845 is tightly fitted to the second acquisition cable 82, thereby preventing adhesive from overflowing along the surface of the second acquisition cable 82.

[0091] Furthermore, the second main body 841 is interference-fitted with the inner wall of the second through hole 73, thereby making the second main body 841 fit tightly with the inner wall of the second through hole 73, further improving the sealing effect.

[0092] Furthermore, the inner wall of the second perforated hole 845 is interference-fitted with the second acquisition wire harness 82, thereby making the surface of the second main body 841 fit tightly with the surface of the second acquisition wire harness 82, further improving the sealing effect.

[0093] Furthermore, the second sealing sleeve 84 also has a notch 847 that penetrates both second fitting portions 843 and the second main body portion 841. The second acquisition cable 82 enters the second perforated hole 845 of the second main body portion 841 through the notch 847. When the second sealing sleeve 84 is fitted into the second through hole 73, the second main body portion 841 is compressed and closed at the notch 847 under the squeezing action of the inner wall of the second through hole 73, thereby preventing the adhesive from overflowing from the notch 847. In this way, not only is the flexibility of cable threading and the reliability of sealing both taken into account, but frictional damage between the cable and the sealing sleeve can also be reduced.

[0094] Please see Figure 13 and Figure 16 Specifically, in this embodiment, the first sidewall 13 has at least one third through hole (not shown) communicating with the electrical compartment 11. The battery also includes at least one third sealing sleeve 83, which is fitted onto the third through hole to seal it and prevent adhesive from leaking out. A through gap 831 is formed in the portion of the third sealing sleeve 83 within the third through hole, extending along a predetermined path. At least one second acquisition sub-wire 813 and / or at least one fourth acquisition sub-wire 823 pass through the through gap 831 into the electrical compartment 11 and connect to the battery management system within the electrical compartment 11. Thus, the second acquisition sub-wire 813 or the fourth acquisition sub-wire 823 can pass through any position of the through gap 831, thereby accommodating second acquisition sub-wires 813 and fourth acquisition sub-wires 823 of different wire harness lengths, providing flexibility in wire insertion and reducing assembly difficulty. In this way, while adapting to multiple specifications of acquisition sub-wires, the through gap 831 can close naturally, preventing dust from entering the electrical compartment. The sealing design of the first, second, and third sealing sleeves not only prevents glue overflow but also blocks the diffusion of ejected material between modules in the event of thermal runaway, thus improving thermal safety.

[0095] Specifically, the battery management system includes a Battery Management Unit (BMU) 91, a Cell Monitoring Unit (CMU) 92, and the aforementioned high-voltage acquisition module 30. Each of the aforementioned second acquisition sub-lines 813 is electrically connected to the Battery Management Unit 91, the Cell Monitoring Unit 92, and the high-voltage acquisition module 30 of the battery management system, respectively. Each of the aforementioned fourth acquisition sub-lines 823 is electrically connected to the Battery Management Unit 91, the Cell Monitoring Unit 92, and the high-voltage acquisition module 30 of the battery management system, respectively.

[0096] Based on the aforementioned battery, this application also provides an electrical device. This electrical device utilizes the aforementioned 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. The embodiments of this application do not impose special limitations on the aforementioned electrical device.

[0097] 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.

[0098] 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); Both the positive key (a2) and the negative key (a1) are located on one side of the battery case (10) in the X direction, and both the positive key (a2) and the negative key (a1) are located at one end of the battery case (10) in the Y direction; and The first battery module (20a) and the second battery module (20b) are both housed in the battery box (10) and are stacked along the Z direction. The first battery module (20a) has a first positive connection terminal (233a) and a first negative connection terminal (231a) on the side facing the positive key (a2) and the negative key (a1). The second battery module (20b) has a second positive connection terminal (233b) and a second negative connection terminal (231b) on the side facing the positive key (a2) and the negative key (a1). The positions of the first negative connection terminal (231a) and the second positive connection terminal (233b) are corresponding. The first positive connection terminal (233a) and the first negative connection terminal (231a) are respectively spaced apart at both ends of the first battery module (20a) along the Y direction, and the second positive connection terminal (233b) and the second negative connection terminal (231b) are respectively spaced apart at both ends of the second battery module (20b) along the Y direction. The first negative connection terminal (231a) is electrically connected to the negative key (a1), the first positive connection terminal (233a) is electrically connected to the second negative connection terminal (231b), and the second positive connection terminal (233b) is electrically connected to the positive key (a2). 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).

2. The battery according to claim 1, characterized in that, An electrical compartment (11) is provided in the first sidewall (13) of the battery box (10) on the side close to the first total negative connection terminal (231a) and the second total positive connection terminal (233b) along the Y direction. A high voltage acquisition module (30) and a fuse (40) are installed in the electrical compartment (11). The first total negative connection terminal (231a) is electrically connected to the high voltage acquisition module (30) through the first connection bar (31), and the high voltage acquisition module (30) is electrically connected to the total negative key (a1) through the second connection bar (32); The second positive terminal (233b) is electrically connected to the fuse (40) via the third connection bar (41), and the fuse (40) is electrically connected to the positive key (a2) via the fourth connection bar (42); The first positive terminal (233a) is directly electrically connected to the second negative terminal (231b) via a jumper bar (60) extending along the Z direction.

3. The battery according to claim 2, characterized in that, Both the first battery module (20a) and the second battery module (20b) include a plurality of battery cells (22) arranged in an array. Each battery cell (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, the first battery module (20a) and the second battery module (20b) are arranged opposite to each other on the side with the explosion-proof valve (223). The first CCS component (23a) and the second CCS component (23b) are respectively disposed at opposite ends of the first battery module (20a) and the second battery module (20b) along the Z direction, so as to be connected to the terminal post (221) of the cell (22) of the first battery module (20a) and the second battery module (20b) respectively; the first CCS component (23a) is provided with the first positive connection terminal (233a) and the first negative connection terminal (231a) at both ends along the Y direction, and the second CCS component (23b) is provided with the second positive connection terminal (233b) and the second negative connection terminal (231b) at both ends along the Y direction.

4. The battery according to claim 3, characterized in that, The battery also includes a first cell positioning bracket (21a) and a second cell positioning bracket (21b), which are disposed between the first battery module (20a) and the second battery module (20b) to respectively position the first battery module (20a) and the second battery module (20b). The battery also includes support columns (50), and the positions of the plurality of support columns (50) correspond to the first total positive connection terminal (233a), the first total negative connection terminal (231a), the second total positive connection terminal (233b), and the second total negative connection terminal (231b). One end of the support column (50) is connected to the first cell positioning bracket (21a) or the second cell positioning bracket (21b), and the other end is provided with a fixing hole (501). The first positive connection end (233a), the first negative connection end (231a), the second positive connection end (233b) and the second negative connection end (231b) are respectively connected to their corresponding support columns (50) through the fixing hole (501).

5. The battery according to claim 4, characterized in that, The first main negative connection end (231a) and the first connection row (31) are locked and fixed on the fixing hole (501) of the corresponding support column (50) by fasteners (505); The second main positive connection end (233b) and the third connection row (41) are locked and fixed to the fixing hole (501) of the corresponding support column (50) by the fastener (505); The first main positive connection end (233a) and one end of the jumper bar (60) are locked and fixed to the fixing hole (501) of the corresponding support column (50) by the fastener (505); The second main negative connection end (231b) and the other end of the jumper bar (60) are locked and fixed to the fixing hole (501) of the corresponding support column (50) by the fastener (505).

6. The battery according to claim 5, characterized in that, The battery also includes a partition (70) disposed between the first cell positioning bracket (21a) and the second cell positioning bracket (21b), and the partition (70) has a first through hole (71) for the jumper bar (60) to pass through.

7. The battery according to claim 6, characterized in that, The battery also includes a first sealing sleeve (61), which is fitted between the inner wall of the first through hole (71) and the jumper bar (60).

8. The battery according to claim 7, characterized in that, The first sealing sleeve (61) includes a first main body (611) and two first fitting parts (613) respectively connected to opposite ends of the first main body (611). The first main body (611) is fitted inside the first through hole (71), and the two first fitting parts (613) are respectively fitted to opposite side surfaces of the partition (70). The first main body (611) has a first hollow hole (6110) that passes through its opposite ends. The cross-connecting bar (60) is disposed through the first hollow hole (6110). The first hollow hole (6110) is configured to conform to the cross-section of the cross-connecting bar (60).

9. The battery according to claim 8, characterized in that, The first main body (611) is interference-fitted with the inner wall of the first through hole (71); and / or The inner wall of the first perforated hole (6110) is interference-fitted with the crossbar (60).

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

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