Power supply device mounting structure, battery pack

Abstract

The utility model provides a kind of power device mounting structure, battery pack, wherein, power device mounting structure, comprising: mounting seat, with installation area;Coaming structure, including coaming body and shielding piece, coaming body is surrounded in the outer periphery of installation area, coaming body is provided with wire slot, shielding piece is shielded and is arranged at wire slot;First weak connecting piece, between the side of shielding piece and the side wall of wire slot is connected;Second weak connecting piece, between the bottom of shielding piece and the bottom wall of wire slot is connected, the bottom wall of wire slot is provided with mounting groove, second weak connecting piece includes weak section, and weak section is located in mounting groove.The technical scheme of the application can effectively solve the problem that wiring harness assembly is easily scratched in related technology.

Description

Technical Field

[0001] This utility model relates to the field of chemical energy storage technology, and more specifically, to a power supply device mounting structure and a battery pack. Background Technology

[0002] In related fields, battery packs are an effective way to encapsulate energy storage structures. The battery cell serves as the basic structure for energy storage. To achieve electrical connection between the cell and other structures, electrodes and wiring harnesses connecting the electrodes to these structures need to be installed on the cell. Typically, the electrodes are mounted on electrode supports, which have multiple through-holes to allow for multi-directional wiring. These through-holes are usually protected by shielding plates, which must be removed when wiring is needed. A destructible connection structure exists between the bottom edge of the shielding plate and the electrode support. However, when this destructible structure is broken, some components may remain on the electrode support, potentially damaging the wiring harness components (such as busbars). Utility Model Content

[0003] The main objective of this invention is to provide a power supply device mounting structure and a battery pack to solve the problem that wiring harness components are easily scratched in related technologies.

[0004] To achieve the above objectives, according to one aspect of the present invention, a power supply device mounting structure is provided, comprising: a mounting base having an mounting area; a surrounding plate structure including a surrounding plate body and a shielding member, the surrounding plate body surrounding the outer periphery of the mounting area, the surrounding plate body having a wire passage groove, and the shielding member shielding the wire passage groove; a first weak connecting member connecting the side of the shielding member and the side wall of the wire passage groove; and a second weak connecting member connecting the bottom edge of the shielding member and the bottom wall of the wire passage groove, the bottom wall of the wire passage groove having a mounting groove, the second weak connecting member including a weak section located within the mounting groove.

[0005] According to another aspect of the present invention, a battery pack is provided, including a housing, a battery structure, electrode components, and a power device mounting structure. The battery structure, electrode components, and power device mounting structure are all disposed within the housing. The electrode components are disposed within the mounting area of ​​the power device mounting structure and are electrically connected to the battery structure. The power device mounting structure is the aforementioned power device mounting structure.

[0006] Applying the technical solution of this utility model, the mounting base provides a mounting substrate for other components of the power supply device mounting structure. The mounting base has a mounting area for mounting electrode components. The enclosure structure includes an enclosure body and a shielding member. The enclosure body surrounds the outer perimeter of the mounting area to protect the electrode components within the mounting area. The enclosure body is provided with a wire passage groove for wiring. When the wire passage groove is not needed for wiring, the shielding member is positioned at the wire passage groove to protect the electrode components. The cooperation of the first weak connecting member and the second weak connecting member connects the enclosure body and the shielding member, enabling the shielding member to stably shield the wire passage groove, thereby protecting the electrode components. The first weak connecting member connects the side of the shielding member to the side wall of the wire passage groove. The first weak connector can be destroyed by the operator, thereby separating the side of the shield from the side wall of the cable tray. The second weak connector connects the bottom edge of the shield to the bottom wall of the cable tray. The bottom wall of the cable tray has a mounting groove. The second weak connector includes a weak section. Therefore, when the operator needs to remove the shield, they apply external force to it, causing the weak section to also be subjected to external force, which can destroy it. This allows the bottom edge of the shield to separate from the bottom wall of the cable tray. Since the weak section is located within the mounting groove, even if some residual structure of the weak section does not leave the power supply installation structure with the shield, this residual structure will always remain within the mounting groove, preventing it from scratching the wire harness assembly. Therefore, the technical solution of this application effectively solves the problem of wire harness assemblies being easily scratched in related technologies. Attached Figure Description

[0007] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0008] Figure 1 A perspective view of a first embodiment of the power supply device mounting structure according to the present invention is shown;

[0009] Figure 2 A top view schematic diagram of a second embodiment of the power supply device mounting structure according to the present invention is shown;

[0010] Figure 3 It shows Figure 2 A side view of the power supply unit installation structure;

[0011] Figure 4 It shows Figure 2 A cross-sectional schematic diagram of the power supply unit installation structure;

[0012] Figure 5 It shows Figure 4 An enlarged schematic diagram of point A of the power supply device mounting structure;

[0013] Figure 6 A cross-sectional schematic diagram of a third embodiment of the power supply device mounting structure according to the present invention is shown;

[0014] Figure 7 It shows Figure 6 An enlarged schematic diagram of point B on the power supply device mounting structure;

[0015] Figure 8 A cross-sectional schematic diagram of a portion of the structure of the power supply device mounting structure according to the present invention is shown.

[0016] Figure 9 A side view schematic diagram of a portion of the structure of the power supply device mounting structure according to the present invention is shown;

[0017] Figure 10 A perspective structural schematic diagram of an embodiment of the battery pack according to the present invention is shown;

[0018] Figure 11 It shows Figure 10 A top view schematic diagram of an embodiment of the battery pack.

[0019] The above figures include the following reference numerals:

[0020] D1, first maximum groove depth; D2, second maximum groove depth; D3, maximum thickness; A1, distance from the connecting hole to the bottom edge of the weak section; A2, distance from the bottom of the first groove to the bottom edge of the weak section;

[0021] 1. Casing; 2. Battery structure; 3. Electrode components;

[0022] 10. Mounting base; 11. Mounting area;

[0023] 20. Enclosure structure; 21. Enclosure body; 211. Panel body; 22. Shelter; 23. Cable tray; 231. Mounting groove;

[0024] 30. First weakest connecting member; 31. Main body; 32. Reduced diameter section;

[0025] 40. Second weak connecting piece; 41. Weak section; 412. First groove; 413. Inner surface; 414. Outer surface; 416. Second groove; 42. Main body section; 43. Connecting hole. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0027] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0028] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0029] like Figures 1 to 5 As shown, this application provides a power supply device mounting structure. An embodiment of the power supply device mounting structure of this application includes: a mounting base 10, a surrounding plate structure 20, a first weakly connected member 30, and a second weakly connected member 40. The mounting base 10 has a mounting area 11. The surrounding plate structure 20 includes a surrounding plate body 21 and a shielding member 22. The surrounding plate body 21 surrounds the outer periphery of the mounting area 11, and a wire-passing groove 23 is provided on the surrounding plate body 21. The shielding member 22 is provided at the wire-passing groove 23. The first weakly connected member 30 is connected between the side of the shielding member 22 and the side wall of the wire-passing groove 23. The second weakly connected member 40 is connected between the bottom edge of the shielding member 22 and the bottom wall of the wire-passing groove 23. A mounting groove 231 is provided on the bottom wall of the wire-passing groove 23. The second weakly connected member 40 includes a weak segment 41, which is located within the mounting groove 231.

[0030] Applying the technical solution of this embodiment, the mounting base 10 provides a mounting base for other components of the power supply device mounting structure. The mounting base 10 has a mounting area 11 for mounting the electrode component 3. The enclosure structure 20 includes an enclosure body 21 and a shielding component 22. The enclosure body 21 surrounds the outer periphery of the mounting area 11 to protect the electrode component 3 within the mounting area 11. A wire groove 23 is provided on the enclosure body 21 for wire routing. When the wire groove 23 does not need to route wires, the shielding component 22 is positioned at the wire groove 23 to protect the electrode component 3. The cooperation of the first weak connecting member 30 and the second weak connecting member 40 connects the enclosure body 21 and the shielding component 22, enabling the shielding component 22 to be stably positioned at the wire groove 23, thereby protecting the electrode component 3. The first weak connecting member 30 connects the side of the shielding component 22 to the side of the wire groove 23. Between the walls, the first weak connecting member 30 can be destroyed by the operator, thereby separating the side of the shielding member 22 from the side wall of the cable tray 23; the second weak connecting member 40 connects the bottom edge of the shielding member 22 to the bottom wall of the cable tray 23. The bottom wall of the cable tray 23 is provided with an installation groove 231. The second weak connecting member 40 includes a weak section 41. Therefore, when the operator needs to remove the shielding member 22, the operator applies external force to the shielding member 22, thereby causing the weak section 41 to also be subjected to a certain external force, which can destroy the weak section 41, thereby separating the bottom edge of the shielding member 22 from the bottom wall of the cable tray 23. Since the weak section 41 is located in the installation groove 231, even if some residual structure of the weak section 41 does not leave the power supply device mounting structure with the shielding member 22, this residual structure will always remain in the installation groove 231, thereby preventing this residual structure from scratching the wire harness assembly. Therefore, the technical solution of this embodiment can effectively solve the problem of wire harness assemblies being easily scratched in related technologies.

[0031] It should be noted that the power supply device mounting structure is divided into positive battery device lead-out support or negative battery device lead-out support, which is used to fix the current output terminals of multiple battery devices; the battery output terminals are fixedly connected to the nuts on the mounting base 10 by bolts; the mounting base 10 is usually an insulating plastic part, such as polypropylene (PP) or epoxy resin (EP); the battery device lead-out support is generally set at the end of the battery device and can be fixed to the end plate or the frame beam of the box, etc.

[0032] like Figures 1 to 5 As shown, the maximum cross-sectional area of ​​the mounting groove 231 is S1mm. 2 The surface area of ​​the bottom wall of the cable tray 23 is S2mm. 2 Satisfy: 0.2% ≤ S1mm 2 / S2mm 2≤5%. Specifically, the mounting groove 231 that meets the above requirements ensures, on the one hand, that the mounting groove 231 is not too large, thereby affecting the overall structural strength of the power supply device mounting structure; on the other hand, it ensures that the mounting groove 231 has sufficient space to accommodate the weak section 41, preventing the weak section 41 from protruding outside the mounting groove 231 and thus preventing the residual structure of the weak section 41 from affecting the safety of the wiring. The maximum cross-sectional area of ​​the mounting groove 231 is S1mm. 2 The surface area of ​​the bottom wall of the cable tray 23 is S2mm. 2 The ratio S1mm 2 / S2mm 2 The percentage can be 0.2%, 1.2%, 2.8%, 3.5%, 4.2%, or 5%. Furthermore, the maximum cross-sectional area of ​​the mounting groove 231 is S1 mm. 2 The surface area of ​​the bottom wall of the cable tray 23 is S2mm. 2 Satisfy: 1% ≤ S1mm 2 / S2mm 2 ≤3%. Maximum cross-sectional area S1mm of mounting groove 231. 2 The surface area of ​​the bottom wall of the cable tray 23 is S2mm. 2 The ratio S1mm 2 / S2mm 2 It can be 1%, 1.8%, 2%, 2.3%, 2.7%, or 3%. It should be noted that the maximum cross-sectional area refers to the area of ​​the largest cross-section in the transverse direction.

[0033] Furthermore, in this embodiment, the maximum vertical cross-sectional area of ​​the mounting groove 231 is S3mm. 2 The vertical cross-sectional area of ​​the mounting base 10 is S4mm. 2 Satisfies: 0.67% ≤ S3mm 2 / S4mm 2 ≤11.5%. Maximum vertical cross-sectional area S3mm of mounting groove 231. 2 The vertical cross-sectional area of ​​the mounting base 10 is S4mm. 2 The ratio S3mm 2 / S4mm 2 The percentage can be 0.67%, 2.2%, 4.8%, 6.5%, 8.2%, or 11.5%. Furthermore, the maximum vertical cross-sectional area of ​​the mounting groove 231 is S3mm. 2 The vertical cross-sectional area of ​​the mounting base 10 is S4mm. 2 Satisfy: 2% ≤ S3mm 2 / S4mm 2 ≤8%. Maximum vertical cross-sectional area of ​​mounting groove 231: S3mm 2 The vertical cross-sectional area of ​​the mounting base 10 is S4mm. 2 The ratio S3mm2 / S4mm 2 It can be 2%, 3.2%, 5.8%, 6.5%, 7.4%, or 8%. The maximum vertical cross-sectional area of ​​the mounting groove 231 is 3mm. 2 Meets the requirement of 4mm 2 ≤S3mm 2 ≤32mm 2 The maximum vertical cross-sectional area of ​​the mounting groove 231 is S3mm. 2 It can be 4mm 2 8mm 2 12mm 2 20mm 2 24mm 2 27mm 2 Or 32mm 2 It should be noted that the maximum vertical cross-sectional area refers to the area of ​​the largest cross-section in the vertical direction.

[0034] In other embodiments, there are multiple second weak connecting members 40 and mounting grooves 231, with multiple weak segments 41 corresponding to the mounting grooves 231. For example, each of the multiple weak segments 41 corresponds to a mounting groove 231. Specifically, the arrangement of multiple second weak connecting members 40 can ensure a stable connection between the enclosure body 21 and the shielding member 22, so that the shielding member 22 can stably shield the wire passage groove 23, thereby protecting the electrode member 3.

[0035] like Figures 1 to 5 As shown, the weak segment 41 has a sheet-like structure, with an inner surface 413 and an outer surface 414 arranged opposite to each other. A first groove 412 is provided on one of the inner surface 413 and the outer surface 414, penetrating the side end face of the weak segment 41 in the width direction. Specifically, the first groove 412 is a structure similar to a "score," designed to reduce the thickness of a portion of the weak segment 41, making this portion easier to break and thus allowing the second weak connector 40 to be removed. Furthermore, as... Figure 6 and Figure 7 As shown, in other embodiments, a second groove 416 is provided on the other of the inner surface 413 and the outer surface 414. The second groove 416 penetrates the side end face of the weak segment 41 in the width direction of the weak segment 41, and the second groove 416 corresponds to the first groove 412. The second groove 416 and the first groove 412 have similar effects; their corresponding arrangement further reduces the thickness of a portion of the weak segment 41, making the weak segment 41 easier to break. It should be noted that the width direction refers to... Figure 5 The direction perpendicular to the paper.

[0036] like Figure 6 and Figure 7 As shown, the first groove 412 has a first maximum groove depth D1mm, the second groove 416 has a second maximum groove depth D2mm, and the weak section 41 has a maximum thickness D3mm. The first maximum groove depth D1mm, the second maximum groove depth D2mm, and the maximum thickness 0.2mm satisfy: XXX≤(D1mm+D2mm) / D3mm≤0.5. Specifically, this arrangement ensures that the second weak connecting member 40 has sufficient structural strength, thereby ensuring a stable connection between the enclosure body 21 and the shielding member 22, allowing the shielding member 22 to stably shield the wire groove 23. On the other hand, it also makes the weak section 41 more easily damaged. (D1mm+D2mm) / D3mm can be 0.2, 0.28, 0.34, 0.4, 0.48, or 0.5. The first maximum groove depth D1mm satisfies: 0.1mm≤D1mm≤0.5mm. The second maximum groove depth D2mm satisfies: 0.1mm≤D2mm≤0.5mm. The maximum thickness D3mm satisfies: 1mm ≤ D3mm ≤ 2mm. The first maximum groove depth D1mm can be 0.1mm, 0.23mm, 0.33mm, 0.4mm, 0.45mm, or 0.5mm; the second maximum groove depth D2mm can be 0.1mm, 0.25mm, 0.37mm, 0.42mm, 0.47mm, or 0.5mm; the maximum thickness D3mm can be 1mm, 1.25mm, 1.37mm, 1.62mm, 1.78mm, or 2mm.

[0037] like Figure 8 As shown, the second weak connector 40 also includes a main body section 42 connected between the weak section 41 and the bottom edge of the shielding member 22. The main body section 42 is provided with a connecting hole 43. The distance A1 from the connecting hole 43 to the bottom edge of the weak section 41 is greater than the distance A2 from the bottom of the first groove 412 to the bottom edge of the weak section 41. The connecting hole 43 is used for installation and fixation.

[0038] In addition, in some embodiments, the vertical cross-section of the mounting groove 231 is U-shaped, C-shaped or rectangular, so that the mounting groove 231 forms a U-shaped groove, C-shaped groove or square groove, and different shapes of mounting groove 231 can match different shapes of second weak connection members 40.

[0039] like Figure 9As shown, the first weak connecting member 30 includes a main body 31 and a reduced diameter portion 32 connected to each other. The first end of the reduced diameter portion 32 is connected to the main body 31, and the second end of the reduced diameter portion 32 is connected to either the side of the shielding member 22 or the side wall of the cable tray 23. The width of the reduced diameter portion 32 gradually decreases from the first end to the second end. Specifically, the reduced diameter portion 32 weakens the connection strength between the enclosure body 21 and the shielding member 22 to a certain extent, making it easier for workers to break the weak section 41 and remove the shielding member 22. There can be two reduced diameter portions 32, located at opposite ends of the main body 31.

[0040] like Figures 1 to 5 As shown, the enclosure body 21 includes multiple panel bodies 211 connected sequentially, with adjacent panel bodies 211 arranged at an angle. At least a portion of the panel bodies are provided with wire grooves 23, and multiple shielding members 22 are provided, each corresponding to one of the multiple wire grooves 23. Specifically, the multiple panel bodies 211 are connected sequentially, with adjacent panel bodies 211 arranged at an angle, giving the enclosure body 21 multiple facing surfaces. In this embodiment, each panel body 211 is provided with a wire groove 23, allowing workers to flexibly choose the orientation of the wire groove 23 as needed, thereby selecting a suitable wiring direction.

[0041] Furthermore, in this embodiment, the mounting base 10 also includes a cover plate disposed at the top of the enclosure body 21, and the cover plate is detachably connected to the enclosure body 21. Specifically, the detachably disposed cover plate facilitates maintenance of the electrode 3 or other components by the operator.

[0042] This application also provides a battery pack, which includes a housing 1, a battery structure 2, electrode components 3, and a power supply mounting structure. The battery structure 2, electrode components 3, and power supply mounting structure are all disposed within the housing 1. The electrode components 3 are disposed within the mounting area 11 of the power supply mounting structure and are electrically connected to the battery structure 2. The power supply mounting structure is the aforementioned power supply mounting structure. This power supply mounting structure effectively solves the problem of easily scratched connecting cables in related technologies, and the battery pack with this power supply mounting structure also has the aforementioned advantages.

[0043] [Battery Structure]

[0044] The battery structure 2 in this application is a secondary battery, also known as a rechargeable battery or storage battery, which refers to a battery that can be used again after being discharged by recharging to activate the active materials.

[0045] Typically, a secondary battery includes an electrode assembly, an electrolyte, and an outer casing. The electrode assembly consists of a positive electrode, a negative electrode, and a separator. The electrode assembly and electrolyte are assembled inside the outer casing. During charging and discharging, active ions (such as lithium ions) move back and forth between the positive and negative electrodes, inserting and extracting. The separator, positioned between the positive and negative electrodes, primarily prevents short circuits while allowing active ions to pass through. The electrolyte, located between the positive and negative electrodes, mainly serves to conduct active ions.

[0046] As an example, the preparation process of a secondary battery is as follows: the positive electrode, separator, and negative electrode are stacked in sequence, with the separator acting as a separator between the positive and negative electrodes. Then, the electrodes are wound or stacked to obtain an electrode assembly. The electrode assembly is placed in an outer packaging shell, dried, and then injected with electrolyte. After vacuum sealing, settling, formation, and shaping, a secondary battery is obtained.

[0047] [Positive electrode tablets]

[0048] A positive electrode typically includes a positive current collector and a positive electrode film layer disposed on at least one side of the positive current collector. The positive electrode film layer includes a positive electrode active material, which can be any existing publicly disclosed positive electrode active material or a positive electrode active material optimized based on existing materials.

[0049] This application does not impose any particular restrictions on the type of positive electrode active material for the positive electrode sheet. As an example, the positive electrode active materials in this application include lithium-containing transition metal oxides (e.g., LiCoO2), phosphides (e.g., LiFePO4), or lithium intercalation compounds (e.g., positive electrode materials for binary lithium batteries such as lithium cobalt oxide and lithium nickel oxide, or positive electrode materials for ternary lithium batteries such as lithium nickel cobalt manganese oxide and lithium nickel cobalt aluminum oxide).

[0050] In some embodiments, the positive electrode sheet can be prepared by dispersing the above-mentioned components for preparing the positive electrode sheet, such as positive electrode active material, conductive agent, binder and any other components, in a solvent (e.g., N-methylpyrrolidone) to form a positive electrode slurry; coating the positive electrode slurry onto the positive electrode current collector, and then obtaining the positive electrode sheet after drying, rolling, cutting and other processes.

[0051] In this application, the binder is used to improve the adhesion between positive electrode active material particles and the adhesion between the positive electrode active material and the current collector. This application does not impose any particular limitation on the type of binder for the positive electrode sheet; the binder can be any conventional choice in the battery industry. Specifically, the binder can be at least one of polyvinylidene fluoride (PVDF), polytetrafluoroethylene (PTFE), polyvinyl alcohol (PVA), styrene-butadiene rubber (SBR), polyacrylonitrile (PAN), polyimide (PI), polyacrylic acid (PAA), polyacrylate, polyolefin, sodium carboxymethyl cellulose (CMC), or sodium alginate.

[0052] This application does not impose any particular restrictions on the positive electrode current collector, as long as it is conductive and will not cause adverse chemical changes in the battery, and can be made of, for example: stainless steel, aluminum, nickel, titanium, sintered carbon; or aluminum or stainless steel that has been surface treated with one of carbon, nickel, titanium, silver, etc.

[0053] [Negative electrode plate]

[0054] The negative electrode includes a negative electrode current collector and a negative electrode active material layer disposed on at least one side of the negative electrode current collector. The negative electrode active material layer comprises a silicon-based material. This application does not specifically limit the type of silicon-based material; the silicon-based material can be a silicon-carbon material and / or a silicon-oxygen material. As an example, the silicon-based material can be one or more of silicon-carbon composite negative electrode materials, silicon suboxide negative electrode materials, modified silicon suboxide negative electrode materials, and nano-silicon materials. The negative electrode active material in the negative electrode active material layer may also optionally include one or more of artificial graphite, natural graphite, and hard carbon.

[0055] In some embodiments, the negative electrode sheet can be prepared by dispersing the components used to prepare the negative electrode sheet, such as the negative electrode active material, conductive agent, binder and any other components, in a solvent (e.g., water) to form a negative electrode slurry; coating the negative electrode slurry onto the negative electrode current collector, and then obtaining the negative electrode sheet after drying, rolling, cutting and other processes.

[0056] This application does not specifically limit the type of negative electrode conductive agent. In some embodiments, as an example, the negative electrode conductive agent can be one or more of conventional negative electrode conductive agents such as acetylene black and carbon nanotubes.

[0057] This application does not impose specific restrictions on the type of negative electrode binder. In some embodiments, as an example, the binder may be one or more of conventional negative electrode binders such as styrene-butadiene rubber latex (SBR), polyvinylidene fluoride (PVDF), polyacrylic acid (PAA), and sodium carboxymethyl cellulose (CMC). In this application, the binder is preferably PAA, SBR, and CMC, and the mass ratio of PAA, SBR, and CMC may be (34.38-74.29):(20-59.38):(5-7.14).

[0058] This application does not specifically limit the type of negative electrode current collector. In some embodiments, as an example, the negative electrode current collector can be one of the conventional negative electrode current collectors such as copper foil.

[0059] Electrolyte

[0060] The electrolyte acts as a conductor of ions between the positive and negative electrodes. This application does not impose specific limitations on the type of electrolyte; it can be selected according to requirements. As an example, the electrolyte in this application can be any electrolyte suitable for electrochemical energy storage devices in the art. The electrolyte includes an electrolyte and a solvent; the electrolyte typically includes a lithium salt, and additives may also be added to the electrolyte.

[0061] Specifically, the lithium salt includes at least one selected from lithium hexafluorophosphate (LiPF6), lithium tetrafluoroborate (LiBF4), lithium perchlorate (LiClO4), lithium hexafluoroarsenate (LiAsF6), lithium bis(fluorosulfonyl)imide (LiFSI), lithium bis(trifluoromethanesulfonyl)imide (LiTFSI), lithium trifluoromethanesulfonate (LiTFS), lithium difluorooxalate borate (LiDFOB), lithium dioxalate borate (LiBOB), lithium difluorophosphate (LiPO2F2), lithium difluorodioxalate phosphate (LiDFOP), and lithium tetrafluorooxalate phosphate (LiTFOP). The concentration of the electrolyte in the electrolyte solution can be 0.5–5 mol / L.

[0062] Specifically, the solvent includes at least one of ethylene carbonate (EC), propylene carbonate (PC), methyl ethyl carbonate (EMC), diethyl carbonate (DEC), dimethyl carbonate (DMC), dipropyl carbonate (DPC), methyl propyl carbonate (MPC), ethyl propyl carbonate (EPC), butyl carbonate (BC), fluoroethylene carbonate (FEC), methyl formate (MF), methyl acetate (MA), ethyl acetate (EA), propyl acetate (PA), methyl propionate (MP), ethyl propionate (EP), propyl propionate (PP), methyl butyrate (MB), ethyl butyrate (EB), 1,4-butyrolactone (GBL), sulfolane (SF), dimethyl sulfone (MSM), methyl ethyl sulfone (EMS), and diethyl sulfone (ESE).

[0063] In some implementations, as an example, the additive may be a conventional electrolyte additive such as fluoroethylene carbonate (FEC), chloroethylene carbonate (CEC), or vinylene carbonate (VC).

[0064] [Septum]

[0065] In some embodiments, the secondary battery also includes a separator. This application does not impose any particular limitation on the type of separator; any known porous separator with good chemical and structural stability can be selected.

[0066] In some embodiments, as an example, the diaphragm can be one of PP, PE, or PP / PF; the diaphragm can also be a structure in which a coating is formed on the surface of the base film, wherein the base film coating can be one of PP, PE, or PP / PF, and the coating can be an inorganic coating and / or an organic coating. The inorganic coating can be selected from alumina ceramic layers, osmium silicate, etc., and the organic coating can be selected from PVDF, etc.

[0067] like Figure 10 , Figure 11 As shown, this application also provides an electrical device, which includes multiple battery packs, wherein the battery packs are the aforementioned battery packs. The aforementioned battery packs effectively solve the problem in related technologies where wiring harness assemblies (conductor busbars, connecting harnesses, etc.) are easily scratched, and the battery packs having the aforementioned battery packs also have the above-mentioned advantages.

[0068] In the description of this utility model, it should be understood that "multiple" means two or more. Directional terms such as "front, back, up, down, left, right," "horizontal, vertical, perpendicular, horizontal," and "top, bottom" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are used solely for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms 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 limiting the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner or outer contours relative to the outline of each component itself.

[0069] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0070] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0071] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A power supply device mounting structure, characterized in that, include: Mounting base (10) has mounting area (11); The enclosure structure (20) includes an enclosure body (21) and a shielding member (22). The enclosure body (21) surrounds the outer periphery of the installation area (11). A wire groove (23) is provided on the enclosure body (21). The shielding member (22) is provided to shield the wire groove (23). The first weak connecting member (30) is connected between the side of the shielding member (22) and the side wall of the wire groove (23); The second weak connector (40) is connected between the bottom edge of the shield (22) and the bottom wall of the wire passage (23). The bottom wall of the wire passage (23) is provided with an installation groove (231). The second weak connector (40) includes a weak section (41) located in the installation groove (231).

2. The power supply device mounting structure according to claim 1, characterized in that, The maximum cross-sectional area S1mm2 of the mounting groove (231) and the surface area S2mm2 of the bottom wall of the through groove (23) satisfy: 0.2% ≤ S1mm2 / S2mm2 ≤ 5%.

3. The power supply device mounting structure according to claim 2, characterized in that, The maximum cross-sectional area S1mm2 of the mounting groove (231) and the surface area S2mm2 of the bottom wall of the through groove (23) satisfy: 1% ≤ S1mm2 / S2mm2 ≤ 3%.

4. The power supply device mounting structure according to claim 1, characterized in that, The maximum vertical cross-sectional area of ​​the mounting groove (231) is S3mm. 2 The vertical cross-sectional area of ​​the mounting base (10) is S4mm. 2 Satisfying: 0.67% ≤ S3mm 2 / S4mm 2 ≤11.5%。 5. The power supply device mounting structure according to claim 4, characterized in that, The maximum vertical cross-sectional area of ​​the mounting groove (231) is S3mm. 2 The vertical cross-sectional area of ​​the mounting base (10) is S4mm. 2 Satisfy: 2% ≤ S3mm 2 / S4mm 2 ≤8%。 6. The power supply device mounting structure according to claim 4, characterized in that, The maximum vertical cross-sectional area of ​​the mounting groove (231) is S3mm. 2 Meets the requirement of 4mm 2 ≤S3mm 2 ≤32mm 2 .

7. The power supply device mounting structure according to claim 2, characterized in that, There are multiple second weak connecting members (40) and mounting grooves (231), and multiple weak segments (41) are provided corresponding to the mounting grooves (231).

8. The power supply device mounting structure according to claim 7, characterized in that, The weak segment (41) is a sheet-like structure. The weak segment (41) has an inner surface (413) and an outer surface (414) arranged opposite to each other. A first groove (412) is provided on one of the inner surface (413) and the outer surface (414). In the width direction of the weak segment (41), the first groove (412) penetrates the side end face of the weak segment (41).

9. The power supply device mounting structure according to claim 8, characterized in that, A second groove (416) is provided on the other of the inner surface (413) and the outer surface (414). In the width direction of the weak section (41), the second groove (416) penetrates the side end face of the weak section (41). The second groove (416) is provided corresponding to the first groove (412).

10. The power supply device mounting structure according to claim 9, characterized in that, The first groove (412) has a first maximum groove depth D1mm, the second groove (416) has a second maximum groove depth D2mm, and the weak section (41) has a maximum thickness D3mm. The first maximum groove depth D1mm, the second maximum groove depth D2mm and the maximum thickness D3mm satisfy: 0.2≤(D1mm+D2mm) / D3mm≤0.

5.

11. The power supply device mounting structure according to claim 10, characterized in that, The first maximum groove depth D1mm satisfies: 0.1mm≤D1mm≤0.5mm.

12. The power supply device mounting structure according to claim 10, characterized in that, The second maximum groove depth D2mm satisfies: 0.1mm≤D2mm≤0.5mm.

13. The power supply device mounting structure according to claim 10, characterized in that, The maximum thickness D3mm satisfies the following condition: 1mm≤D3mm≤2mm.

14. The power supply device mounting structure according to claim 8, characterized in that, The second weak connector (40) further includes a main body section (42) connected between the weak section (41) and the bottom edge of the shielding member (22). The main body section (42) is provided with a connecting hole (43). The distance A1 from the connecting hole (43) to the bottom edge of the weak section (41) is greater than the distance A2 from the bottom of the first groove (412) to the bottom edge of the weak section (41).

15. The power supply device mounting structure according to claim 1, characterized in that, The vertical cross-section of the mounting groove (231) is U-shaped, C-shaped, or rectangular.

16. The power supply device mounting structure according to claim 1, characterized in that, The first weak connecting member (30) includes a main body (31) and a reduced diameter part (32) connected to each other. The first end of the reduced diameter part (32) is connected to the main body (31), and the second end of the reduced diameter part (32) is connected to one of the side of the shielding member (22) and the side wall of the wire groove (23). The width dimension of the reduced diameter part (32) gradually decreases in the direction from the first end to the second end of the reduced diameter part (32).

17. The power supply device mounting structure according to any one of claims 1 to 16, characterized in that, The enclosure body (21) includes multiple panel bodies (211), which are connected in sequence. Adjacent panel bodies (211) are arranged at an angle. At least some of the panel bodies (211) are provided with wire grooves (23). There are multiple shielding members (22), and the multiple shielding members (22) are provided in a one-to-one correspondence with the multiple wire grooves (23).

18. The power supply device mounting structure according to any one of claims 1 to 16, characterized in that, The mounting base (10) also includes a cover plate disposed at the top of the enclosure body (21), the cover plate being detachably connected to the enclosure body (21).

19. A battery pack, comprising a housing (1), a battery structure (2), electrode components (3), and a power supply mounting structure, wherein the battery structure (2), the electrode components (3), and the power supply mounting structure are all disposed within the housing (1), the electrode components (3) are disposed within the mounting area (11) of the power supply mounting structure, and the electrode components (3) are electrically connected to the battery structure (2), characterized in that, The power supply installation structure is the power supply installation structure according to any one of claims 1 to 18.

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