Battery device lead-out support, battery pack

Abstract

The utility model provides a kind of battery device lead-out support, battery pack, wherein, battery device lead-out support includes: seat body, with electrode installation area;Fence structure, including fence and shield piece, fence is surrounded in the outer periphery of electrode installation area, fence is provided with through groove, shield piece is shielded and is arranged at through groove, the bottom edge of shield piece is spaced apart with the bottom wall of through groove;Connecting piece is connected between the side of shield piece and the side wall of through groove, the size d1mm of the connecting place of connecting piece and the side of shield piece meets: 0.67%≤d1mm / Dmm≤30%.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 battery device lead-out support and a battery pack. Background Technology

[0002] Currently, batteries, as a chemical energy storage structure, provide a stable and reliable energy source for various industries. Especially in the field of new energy vehicles, where technology has made leaps and bounds, power batteries, as the power source of electric vehicles, play a crucial role. Among these, batteries, as core components of new energy vehicles, have high requirements in terms of both performance and manufacturing quality.

[0003] 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 avoid wiring harnesses and allow for multi-directional wiring. These through-holes are usually protected by shields. When wiring is required, the shields must be removed. A destructible connection structure is provided between the bottom edge of the shield and the electrode support. However, when this destructible structure is broken, some of the structure may remain on the electrode support, potentially damaging the wiring harness. Utility Model Content

[0004] The main purpose of this utility model is to provide a battery device lead-out support and battery pack to solve the problem that wiring harness components in related technologies are easily scratched.

[0005] To achieve the above objectives, according to one aspect of the present invention, a battery device lead-out support is provided, comprising: a base having an electrode mounting area; a enclosure structure including a enclosure plate and a shielding member, the enclosure plate surrounding the outer periphery of the electrode mounting area, the enclosure plate having a through groove, the shielding member shielding the through groove, the bottom edge of the shielding member being spaced apart from the bottom wall of the through groove; and a connector connecting the side edge of the shielding member to the side wall of the through groove, wherein the dimension d1mm at the connection between the connector and the side edge of the shielding member and the dimension Dmm of the side edge of the shielding member satisfy: 0.67% ≤ d1mm / Dmm ≤ 30%.

[0006] According to another aspect of the present invention, a battery pack is provided, including a housing, a battery structure, electrodes, and a battery device lead-out support. The battery structure, electrodes, and battery device lead-out support are all disposed within the housing. The electrodes are disposed in the electrode mounting area of ​​the battery device lead-out support and are electrically connected to the battery structure. The battery device lead-out support is the aforementioned battery device lead-out support.

[0007] Applying the technical solution of this utility model, the base provides a mounting base for other components of the battery device lead-out support. The base has an electrode mounting area for mounting electrodes. The enclosure structure includes a surrounding plate and a shielding member. The surrounding plate surrounds the outer perimeter of the electrode mounting area to protect the electrodes within the mounting area. The surrounding plate has a through groove for wiring. When wiring is not required in the through groove, the shielding member is positioned at the through groove to protect the electrodes. The bottom edge of the shielding member is spaced apart from the bottom wall of the through groove, and there is no connecting structure between the bottom edge of the shielding member and the bottom wall of the through groove. When the shielding member is removed and the through groove is exposed, there is no additional structure on the bottom of the through groove, thus preventing scratches on the wiring harness passing through the through groove. The connector is located between the side of the shield and the side wall of the channel. The dimension d1mm at the connection between the connector and the side of the shield satisfies the following ratio: 0.67% ≤ d1mm / Dmm ≤ 30%. With a connector meeting these requirements, workers can apply external force to the shield to break the connector, causing the shield to detach from the channel. This ensures a certain connection strength between the enclosure and the shield, preventing the shield from detaching from the channel without worker intervention, thus protecting the electrodes. Simultaneously, the connection strength between the enclosure and the shield is not excessively high, making it difficult for workers to damage the connector and remove the shield. Therefore, the technical solution of this application effectively solves the problem of easily scratched wire harness assemblies in related technologies. Attached Figure Description

[0008] 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:

[0009] Figure 1 A three-dimensional structural schematic diagram of a first embodiment of the battery device lead-out support according to the present invention is shown;

[0010] Figure 2 It shows Figure 1 A top view of the battery device extending from the support;

[0011] Figure 3 It shows Figure 1 A side view of the battery device extending from the support.

[0012] Figure 4 It shows Figure 3 An enlarged schematic diagram of point A on the battery device lead-out support;

[0013] Figure 5 A side view schematic diagram of the connector of the second embodiment of the battery device lead-out support according to the present invention is shown;

[0014] Figure 6 A top view schematic diagram of the connector of the third embodiment of the battery device lead-out support according to the present invention is shown;

[0015] Figure 7 A perspective structural schematic diagram of an embodiment of the battery pack according to the present invention is shown;

[0016] Figure 8 It shows Figure 6 A top view of the battery pack.

[0017] The above figures include the following reference numerals:

[0018] d1, Dimension of the connection between the connector and the side of the shield; d2, Dimension of the connection between the connector and the side wall of the groove; D, Dimension of the side of the shield; d3, Width of the end of the first reduced diameter section near the main body section; d4, Width of the end of the first reduced diameter section near the shield; d5, Depth of the first groove; d6, Thickness of the connecting piece;

[0019] 1. Casing; 2. Battery structure; 3. Electrodes;

[0020] 10. Base; 11. Electrode mounting area;

[0021] 20. Enclosure structure; 21. Enclosure panel; 211. Panel body; 22. Covering component; 23. Through groove;

[0022] 30. Connector; 31. Connecting piece; 311. Main body section; 312. First diameter reduction section; 313. Second diameter reduction section; 314. Top wall of piece; 315. Bottom wall of piece; 316. First surface; 317. First groove; 318. Second surface; 319. Second groove. Detailed Implementation

[0023] 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.

[0024] 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.

[0025] 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.

[0026] like Figures 1 to 4 As shown, this application provides a battery device lead-out support. An embodiment of the battery device lead-out support of this application includes: a base 10, a enclosure structure 20, and a connector 30; the base 10 has an electrode mounting area 11; the enclosure structure 20 includes a surrounding plate 21 and a shielding member 22. The surrounding plate 21 surrounds the outer periphery of the electrode mounting area 11, and a groove 23 is provided on the surrounding plate 21. The shielding member 22 is disposed at the groove 23, with its bottom edge spaced apart from the bottom wall of the groove 23; the connector 30 connects the side of the shielding member 22 to the side wall of the groove 23. The dimension d1mm at the connection between the connector 30 and the side of the shielding member 22 and the dimension Dmm of the side of the shielding member 22 satisfy: 0.67% ≤ d1mm / Dmm ≤ 30%.

[0027] Applying the technical solution of this embodiment, the base 10 provides a mounting base for other components of the battery device lead-out support. The base 10 has an electrode mounting area 11 for mounting electrodes 3. The enclosure structure 20 includes a surrounding plate 21 and a shielding member 22. The surrounding plate 21 surrounds the outer periphery of the electrode mounting area 11 to protect the electrodes 3 within the electrode mounting area 11. The surrounding plate 21 is provided with a through groove 23 for wiring. When the through groove 23 does not require wiring, the shielding member 22 is positioned at the through groove 23 to protect the electrodes 3. The bottom edge of the shielding member 22 is spaced apart from the bottom wall of the through groove 23. There is no connecting structure between the bottom edge of the shielding member 22 and the bottom wall of the through groove 23. When the shielding member 22 is removed and the through groove 23 is exposed, there is no additional structure on the bottom of the through groove 23, thus preventing scratches on the through groove. The wire harness assembly 23; the connector 30 is connected between the side of the shield 22 and the side wall of the channel 23. The dimension d1mm of the connection between the connector 30 and the side of the shield 22 and the dimension Dmm of the side of the shield 22 satisfy: 0.67% ≤ d1mm / Dmm ≤ 30%. The connector 30, meeting the above requirements, allows the operator to apply external force to the shield 22 to break the connector 30, thereby causing the shield 22 to detach from the channel 23. On the one hand, this ensures a certain connection strength between the enclosure 21 and the shield 22, thus ensuring that the shield 22 will not detach from the channel 23 without operator intervention, thus protecting the electrode 3. On the other hand, it also prevents the connection strength between the enclosure 21 and the shield 22 from being too high, making it difficult for the operator to damage the connector 30 and thus difficult to remove the shield 22. Therefore, the technical solution of this embodiment can effectively solve the problem of wire harness assemblies being easily scratched in related technologies.

[0028] It should be noted that the battery device lead-out supports are divided into positive battery device lead-out supports or negative battery device lead-out supports, used to fix the current output terminals of multiple battery devices; the battery output terminals are fixedly connected to the nuts on the base 10 by bolts; the base 10 is usually an insulating plastic part, such as polypropylene (PP) or epoxy resin (EP); the battery device lead-out supports are generally set at the ends of the battery devices and can be fixed to end plates or structures such as box frame beams. The ratio d1mm / Dmm of the connection between the side of the connector 30 and the shield 22 to the side dimension Dmm of the shield 22 can be 0.67%, 1.1%, 5%, 10.8%, 12.9%, 18.5%, 20.1%, 23.6%, 27.8%, or 30%.

[0029] Furthermore, in this embodiment, the dimension d1mm at the connection point between the connector 30 and the side of the shield 22 satisfies: 0.2mm ≤ d1mm ≤ 3mm. The dimension d1mm at the connection point between the connector 30 and the side of the shield 22 can be 0.2mm, 0.68mm, 1mm, 1.4mm, 2mm, 2.2mm, 2.5mm, 2.7mm, or 3mm. The dimension Dmm of the side of the shield 22 satisfies: 10mm ≤ Dmm ≤ 30mm. The dimension Dmm of the side of the shield 22 can be 10mm, 13mm, 15mm, 19mm, 20mm, 22mm, 25mm, 27mm, or 30mm. The dimension d1mm at the connection point between the connector 30 and the side of the shield 22 and the dimension Dmm of the side of the shield 22 satisfy: 2% ≤ d1mm / Dmm ≤ 10%. The ratio d1mm / Dmm of the connection between the connector 30 and the side wall of the shield 22 to the side wall dimension Dmm of the shield 22 can be 2%, 2.6%, 4%, 4.7%, 5%, 6.8%, 7.4%, 8.6%, 9%, or 10%. The ratio d2mm / Dmm of the connection between the connector 30 and the side wall of the through groove 23 to the side wall dimension Dmm of the shield 22 satisfies: 0.67% ≤ d2mm / Dmm ≤ 30%. The ratio d2mm / Dmm of the connection between the connector 30 and the side wall of the through groove 23 to the side wall dimension Dmm of the shield 22 can be 0.67%, 1.8%, 6%, 12.8%, 17.9%, 19.5%, 22.8%, 25.6%, 28.8%, or 30%. The dimension d2mm at the connection between the connector 30 and the side wall of the through groove 23 satisfies: 0.2mm≤d2mm≤3mm. The dimension d2mm at the connection between the connector 30 and the side wall of the through groove 23 can be 0.2mm, 1.8mm, 2mm, 2.2mm, 2.5mm, 2.8mm or 3mm.

[0030] like Figures 1 to 4 As shown, the connector 30 includes a connecting piece 31. The first end of the connecting piece 31 is connected to the side of the shield 22, and the second end of the connecting piece 31 is connected to the side wall of the through groove 23. The maximum width of the connecting piece 31 is greater than or equal to 0.8 mm and less than or equal to 3 mm. Specifically, the connecting piece 31, meeting the above requirements, ensures a certain connection strength between the enclosure 21 and the shield 22. When the shield 22 does not need to be removed, it keeps the shield 22 connected to the enclosure 21 and does not detach from the through groove 23, thus providing shielding protection for the electrode 3. On the other hand, it also ensures that the connection strength between the enclosure 21 and the shield 22 is not too high, making it difficult for workers to damage the connector 30 and thus difficult to remove the shield 22. The maximum width of the connecting piece 31 can be 0.8 mm, 1.2 mm, 1.5 mm, 2 mm, 2.8 mm, or 3 mm.

[0031] like Figure 5 As shown, the connecting piece 31 includes a main body section 311 and a first reduced-diameter section 312. The first reduced-diameter section 312 connects the first end of the main body section 311 to the side of the shielding member 22. The width of the first reduced-diameter section 312 gradually decreases in the direction from the main body section 311 to the side of the shielding member 22. Specifically, the first reduced-diameter section 312 can weaken the connection strength between the enclosure 21 and the shielding member 22 to a certain extent, thereby making it easier for workers to break the connecting piece 31 and remove the shielding member 22.

[0032] like Figure 5 As shown, the connecting piece 31 also includes a second reduced-diameter section 313, which connects the second end of the main body section 311 to the side wall of the through groove 23. The width of the second reduced-diameter section 313 gradually decreases in the direction from the main body section 311 to the side wall of the through groove 23. Specifically, the function of the second reduced-diameter section 313 is similar to that of the first reduced-diameter section 312; it can also weaken the connection strength between the enclosure 21 and the blocking member 22 to a certain extent, thereby allowing workers to more easily destroy the blocking member 22 and remove it.

[0033] like Figure 5 As shown, the width dimension d3mm of the end of the first reduced diameter section 312 near the main body section 311 and the width dimension d4mm of the end of the first reduced diameter section 312 near the shielding member 22 satisfy the following condition: 10% ≤ d4mm / d3mm ≤ 50%. Specifically, the first reduced diameter section 312 that satisfies the above requirements ensures, on the one hand, that the width dimension d3 of the end of the first reduced diameter section 312 near the main body section 311 is relatively wide, thereby ensuring sufficient connection strength between the first reduced diameter section 312 and the main body section 311, thus ensuring the overall strength of the connecting piece 31; on the other hand, it ensures that the width dimension d4 of the end of the first reduced diameter section 312 near the shielding member 22 is relatively narrow, thereby making the connecting piece 31 easily damaged. The ratio d4mm / d3mm of the width dimension d3mm of the first diameter reduction section 312 near the main body section 311 to the width dimension d4mm of the first diameter reduction section 312 near the shield 22 can be 10%, 12%, 18%, 20%, 32%, 40%, 44% or 50%.

[0034] Furthermore, in this embodiment, the width dimension d3mm of the end of the first diameter-reduced segment 312 near the main body segment 311 and the width dimension d4mm of the end of the first diameter-reduced segment 312 near the shielding member 22 satisfy the following condition: 20% ≤ d4mm / d3mm ≤ 30%. The ratio d4mm / d3mm of the width dimension d3mm of the end of the first diameter-reduced segment 312 near the main body segment 311 and the width dimension d4mm of the end of the first diameter-reduced segment 312 near the shielding member 22 can be 20%, 21.3%, 23.5%, 25%, 26.7%, 27.6%, 28%, or 30%.

[0035] like Figure 6 As shown, the connecting piece 31 has a top wall 314, a bottom wall 315, and a first surface 316 located between the top wall 314 and the bottom wall 315. A first groove 317 is provided on the first surface 316, and the two ends of the first groove 317 communicate with the top wall 314 and the bottom wall 315, respectively. Specifically, the first groove 317 is a structure similar to a "scratch," the purpose of which is to reduce the thickness of a certain area of ​​the connecting piece 31, thereby making this area easier to break and thus remove the connecting piece 31. In addition, the connecting piece 31 has a second surface 318 disposed opposite to the first surface 316, the second surface 318 being located between the top wall 314 and the bottom wall 315. A second groove 319 is provided on the second surface 318, and the two ends of the second groove 319 communicate with the top wall 314 and the bottom wall 315, respectively. The second groove 319 is correspondingly disposed to the first groove 317. The second groove 319 and the first groove 317 have similar effects. The corresponding arrangement of the second groove 319 and the first groove 317 can further reduce the thickness of a portion of the connecting piece 31.

[0036] like Figure 6 As shown, the ratio of the depth dimension d5mm of the first groove 317 to the thickness dimension d6mm of the connecting piece 31 is greater than or equal to 20% and less than or equal to 45%. Specifically, the connecting piece 31 that meets the above conditions has sufficient structural strength on the one hand, and is easily damaged on the other. The ratio of the depth dimension d5mm of the first groove 317 to the thickness dimension d6mm of the connecting piece 31 can be 20%, 28%, 30%, 40%, 42%, or 45%.

[0037] like Figures 1 to 4 As shown, there are multiple connectors 30, which are spaced apart along the extension direction of the side of the shield 22. Specifically, the arrangement of multiple connectors 30 enables a stable connection between the enclosure 21 and the shield 22.

[0038] like Figures 1 to 4As shown, the enclosure 21 includes multiple plates 211 connected sequentially, with adjacent plates 211 arranged at an angle. At least some plates 211 have through grooves 23. Multiple blocking members 22 are provided, each corresponding to one of the through grooves 23. Specifically, the sequential connection of the multiple plates 211 with adjacent plates 211 at an angle gives the enclosure 21 multiple facing directions. In this embodiment, each plate 211 has a through groove 23, allowing workers to flexibly choose the orientation of the through groove 23 as needed, thus selecting a suitable wiring direction.

[0039] Furthermore, in this embodiment, the base 10 also includes a cover plate disposed at the top of the enclosure 21, and the cover plate is detachably connected to the enclosure 21. Specifically, the detachably disposed cover plate facilitates maintenance of the electrode 3 or other components by the operator.

[0040] like Figure 7 , Figure 8 As shown, this application also provides a battery pack, which includes a housing 1, a battery structure 2, an electrode 3, and a battery device lead-out support. The battery structure 2, electrode 3, and battery device lead-out support are all disposed within the housing 1. The electrode 3 is disposed in the electrode mounting area 11 of the battery device lead-out support, and the electrode 3 is electrically connected to the battery structure 2. The battery device lead-out support is the aforementioned battery device lead-out support. The aforementioned battery device lead-out support effectively solves the problem of wire harness components being easily scratched in related technologies, and the battery pack with the aforementioned battery device lead-out support also has the above-mentioned advantages.

[0041] [Battery Structure]

[0042] 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.

[0043] 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.

[0044] 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.

[0045] [Positive electrode tablets]

[0046] 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.

[0047] 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).

[0048] 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.

[0049] 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.

[0050] 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.

[0051] [Negative electrode plate]

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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).

[0056] This application does not impose specific limitations on 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.

[0057] Electrolyte

[0058] 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.

[0059] 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.

[0060] 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).

[0061] 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).

[0062] [Septum]

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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 battery device lead-out support, characterized in that, include: The base (10) has an electrode mounting area (11); The enclosure structure (20) includes a enclosure panel (21) and a shielding member (22). The enclosure panel (21) surrounds the outer periphery of the electrode mounting area (11). A groove (23) is provided on the enclosure panel (21). The shielding member (22) is provided at the groove (23). The bottom edge of the shielding member (22) is spaced apart from the bottom wall of the groove (23). A connector (30) is connected between the side of the shield (22) and the side wall of the groove (23). The dimension d1mm of the connection between the connector (30) and the side of the shield (22) satisfies the following condition: 0.67% ≤ d1mm / Dmm ≤ 30%.

2. The battery device lead-out support according to claim 1, characterized in that, The dimension d1mm at the connection between the connector (30) and the side of the shield (22) satisfies: 0.2mm≤d1mm≤3mm.

3. The battery device lead-out support according to claim 1, characterized in that, The side dimension Dmm of the shielding member (22) satisfies: 10mm≤Dmm≤30mm.

4. The battery device lead-out support according to claim 1, characterized in that, The dimension d1mm at the connection between the connector (30) and the side of the shield (22) satisfies the following condition: 2% ≤ d1mm / Dmm ≤ 10%.

5. The battery device lead-out support according to claim 1, characterized in that, The dimension d2mm at the connection between the connector (30) and the side wall of the groove (23) satisfies the following condition: 0.67% ≤ d2mm / Dmm ≤ 30%.

6. The battery device lead-out support according to claim 5, characterized in that, The dimension d2mm at the connection between the connector (30) and the side wall of the groove (23) satisfies: 0.2mm≤d2mm≤3mm.

7. The battery device lead-out support according to claim 1, characterized in that, The connector (30) includes a connecting piece (31), the first end of which is connected to the side of the shield (22), the second end of which is connected to the side wall of the through groove (23), and the maximum width of the connecting piece (31) is greater than or equal to 0.8 mm and less than or equal to 3 mm.

8. The battery device lead-out support according to claim 7, characterized in that, The connecting piece (31) includes a main body section (311) and a first reduced diameter section (312). The first reduced diameter section (312) is connected between the first end of the main body section (311) and the side of the shield (22). In the direction from the main body section (311) to the side of the shield (22), the width of the first reduced diameter section (312) gradually decreases.

9. The battery device lead-out support according to claim 8, characterized in that, The width dimension d3mm of the end of the first diameter reduction section (312) near the main body section (311) and the width dimension d4mm of the end of the first diameter reduction section (312) near the shield (22) satisfy: 10% ≤ d4mm / d3mm ≤ 50%.

10. The battery device lead-out support according to claim 9, characterized in that, The width dimension d3mm of the end of the first diameter reduction section (312) near the main body section (311) and the width dimension d4mm of the end of the first diameter reduction section (312) near the shield (22) satisfy: 20% ≤ d4mm / d3mm ≤ 30%.

11. The battery device lead-out support according to claim 8, characterized in that, The connecting piece (31) further includes a second reduced diameter section (313), which is connected between the second end of the main body section (311) and the side wall of the through groove (23). In the direction from the main body section (311) to the side wall of the through groove (23), the width of the second reduced diameter section (313) gradually decreases.

12. The battery device lead-out support according to claim 7, characterized in that, The connecting piece (31) has a top wall (314), a bottom wall (315), and a first surface (316) located between the top wall (314) and the bottom wall (315). A first groove (317) is provided on the first surface (316), and the two ends of the first groove (317) are respectively connected to the top wall (314) and the bottom wall (315).

13. The battery device lead-out support according to claim 12, characterized in that, The connecting piece (31) has a second surface (318) opposite to the first surface (316). The second surface (318) is located between the top wall (314) and the bottom wall (315) of the piece. A second groove (319) is provided on the second surface (318). The two ends of the second groove (319) are respectively connected to the top wall (314) and the bottom wall (315) of the piece. The second groove (319) is correspondingly provided to the first groove (317).

14. The battery device lead-out support according to claim 12, characterized in that, The ratio of the depth dimension d5mm of the first groove (317) to the thickness dimension d6mm of the connecting piece (31) is greater than or equal to 20% and less than or equal to 45%.

15. The battery device lead-out support according to any one of claims 1 to 14, characterized in that, There are multiple connectors (30), and the multiple connectors (30) are spaced apart along the extension direction of the side of the shield (22).

16. The battery device lead-out support according to any one of claims 1 to 14, characterized in that, The enclosure (21) includes multiple plates (211), which are connected in sequence. Adjacent plates (211) are arranged at an angle. At least some of the plates (211) are provided with grooves (23). There are multiple blocking members (22), and the multiple blocking members (22) are provided in a one-to-one correspondence with the multiple grooves (23).

17. The battery device lead-out support according to any one of claims 1 to 14, characterized in that, The seat (10) also includes a cover plate disposed at the top of the enclosure (21), the cover plate being detachably connected to the enclosure (21).

18. A battery pack, comprising a housing (1), a battery structure (2), electrodes (3), and a battery device lead-out support, wherein the battery structure (2), the electrodes (3), and the battery device lead-out support are all disposed within the housing (1), the electrodes (3) are disposed in the electrode mounting area (11) of the battery device lead-out support, and the electrodes (3) are electrically connected to the battery structure (2), characterized in that, The battery device lead-out support is the battery device lead-out support according to any one of claims 1 to 17.

Images