Ccs assembly, battery and powered device

Abstract

The application discloses a CCS assembly, a battery and a power utilization device. The CCS assembly comprises a bracket, the bracket is provided with a first stress release groove and a second stress release groove, the first stress release groove and the second stress release groove penetrate through the bracket in the thickness direction of the bracket, the bracket has a first end side and a second end side in the length direction of the bracket, the first stress release groove extends from the first end side edge to the second end side, and the second stress release groove extends from the second end side edge to the first end side. The application aims to inhibit the warping of the bracket at both ends of the length direction of the bracket.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more particularly to a CCS component, battery, and electrical device. Background Technology

[0002] In related technologies, a battery includes a CCS module and a battery cell. The CCS module includes a support mounted on the battery cell. During the charging and discharging process, the battery cell is prone to expansion, which causes the support to have greater stress, resulting in the support tilting at both ends along its length. Summary of the Invention

[0003] This application provides a CCS component, battery, and electrical device designed to suppress the warping of the support at both ends along its length.

[0004] To achieve the above objectives, according to a first aspect of this application, a CCS component is provided, comprising: The bracket is provided with a first stress relief groove and a second stress relief groove. In the thickness direction of the bracket, the first stress relief groove and the second stress relief groove penetrate the bracket. In the length direction of the bracket, the bracket has a first end side and a second end side. The first stress relief groove extends from the edge of the first end side toward the second end side, and the second stress relief groove extends from the edge of the second end side toward the first end side.

[0005] Thus, a first stress relief groove and a second stress relief groove are set at the stress concentration point. The stress generated by the expansion will preferentially act on the area of ​​the first stress relief groove and the second stress relief groove, and the stress will be released through the deformation of the groove wall, thus avoiding the continuous accumulation of stress that would cause the two ends of the support to warp.

[0006] Optionally, the bracket has a first centerline extending along the length of the bracket, the first centerline passing through the first stress relief groove and / or the second stress relief groove.

[0007] When a battery cell is charged and discharged, the support is subjected to greater stress at the first centerline. The first centerline passes through the first stress relief groove and / or the second stress relief groove, which allows the support to release more stress through the first stress relief groove and / or the second stress relief groove, thereby reducing the degree of warping at the end of the support.

[0008] Optionally, the first stress relief groove is symmetrically arranged about the first centerline.

[0009] This ensures that the stress release levels on both sides of the first centerline are relatively similar, avoiding a large stress difference between the two sides of the first centerline, thereby reducing the occurrence of warping or local bending.

[0010] Optionally, the second stress relief groove is symmetrically arranged about the first centerline.

[0011] This ensures that the stress release levels on both sides of the first centerline are relatively similar, avoiding a large stress difference between the two sides of the first centerline, thereby reducing the occurrence of warping or local bending.

[0012] Optionally, the bracket is provided with a polarity marking structure, and the first centerline also passes through the polarity marking structure, which is located between the first stress relief groove and the second stress relief groove.

[0013] The polarity marking structure allows operators to quickly and accurately identify the positive and negative polarities of the battery, preventing performance degradation, damage, or even safety accidents caused by incorrect polarity connection. The polarity marking structure also contributes to a more symmetrical structure of the support frame, helping to reduce stress differences between the two sides of the first center line.

[0014] The polarity marking structure is located between the first and second stress relief grooves and will not affect the normal function of the first and second stress relief grooves. The first and second stress relief grooves can effectively alleviate the stress generated by the expansion of the battery cells, and the presence of the polarity marking structure will not interfere with the transmission and release path of the stress, ensuring that the bracket can maintain good structural stability while releasing stress and preventing problems such as warping and deformation of the bracket due to stress concentration.

[0015] Optionally, the CCS assembly further includes two signal transmission conductors and multiple buses, with each of the two signal transmission conductors connected to at least one of the buses. In the width direction of the bracket, the first stress relief groove and the second stress relief groove are disposed between the two signal transmission conductors.

[0016] In this way, the area between the two signal transmission conductors is fully utilized.

[0017] Optionally, the signal transmission conductor is configured as FFC.

[0018] This allows for a more compact structure for CCS components.

[0019] Optionally, the CCS assembly is used to mount battery cells. In the length direction of the bracket, the size of the first stress relief groove is A, the size of the second stress relief groove is B, the thickness of the battery cell is C, A≥3C, and / or B≥3C.

[0020] If A is small, the stress on the stent is not released completely. Therefore, when A ≥ 3C, the stress on the stent is released more completely, which helps to suppress the warping of the corresponding end of the stent.

[0021] If B is small, the stress on the stent is not released completely. Therefore, when B ≥ 3C, the stress on the stent is released more completely, which helps to suppress the warping of the corresponding end of the stent.

[0022] Optionally, the CCS assembly is used to mount battery cells, and the bracket is provided with clearance holes. The clearance holes are configured to correspond to the explosion-proof valves of the battery cells. In the width direction of the bracket, the opposite ends of the clearance holes do not exceed the opposite ends of the first stress relief groove.

[0023] If the width of the first stress relief groove is small, the two opposite sidewalls of the first stress relief groove will be relatively close. During the charging and discharging process of the battery cell, the two opposite sidewalls of the first stress relief groove are prone to rubbing or even slapping against each other, causing the CCS module to emit a large abnormal noise. Therefore, the two opposite ends of the clearance hole do not exceed the two opposite ends of the first stress relief groove, making the width of the first stress relief groove larger and the two opposite sidewalls of the first stress relief groove farther apart. During the charging and discharging process of the battery cell, the two opposite sidewalls of the first stress relief groove are less likely to rub against each other, making the CCS module less likely to emit a large abnormal noise.

[0024] Optionally, the CCS assembly is used to mount battery cells, and the bracket is provided with clearance holes. The clearance holes are configured to correspond to the explosion-proof valves of the battery cells. In the width direction of the bracket, the opposite ends of the clearance holes do not exceed the opposite ends of the second stress relief groove.

[0025] If the width of the second stress relief groove is small, the two opposite sidewalls of the second stress relief groove will be relatively close. During the charging and discharging process of the battery cells, the opposite sidewalls of the second stress relief groove are prone to rubbing or even slapping against each other, causing the CCS module to emit significant abnormal noise. Therefore, the two opposite ends of the clearance hole do not exceed the two opposite ends of the second stress relief groove, making the width of the second stress relief groove larger and the opposite sidewalls of the second stress relief groove farther apart. During the charging and discharging process of the battery cells, the opposite sidewalls of the second stress relief groove are less likely to rub against each other, thus reducing the likelihood of the CCS module emitting significant abnormal noise.

[0026] Optionally, in the width direction of the bracket, the size of the first stress relief groove is the same as the size of the clearance hole, and / or, the size of the second stress relief groove is the same as the size of the clearance hole.

[0027] The width of the first stress relief groove is the same as the size of the clearance hole, which helps to reduce the difficulty of designing the CCS component and also makes the fabrication of the first stress relief groove easier.

[0028] The width of the second stress relief groove is the same as the size of the clearance hole, which helps to reduce the difficulty of designing the CCS component and also makes the fabrication of the second stress relief groove easier.

[0029] Optionally, the bracket is provided with a placement slot, and the CCS assembly further includes an FFC and a busbar. The FFC includes a main body segment and a branch segment disposed at an angle to the main body segment. The branch segment connects to the busbar and is disposed in the placement slot. The placement slot has a first slot segment and a second slot segment. The first slot segment extends to the corresponding busbar, and the second slot segment extends to the main body segment. The width of the first slot segment tends to increase in the direction closer to the corresponding busbar.

[0030] In this way, even if the first connecting end moves with the busbar, the first slot section can still provide space for the branch section to move, resulting in less pressure or even no contact between the branch section and the sidewall of the slot. This reduces the possibility of large deformation or even breakage of the branch section.

[0031] Optionally, the first groove segment has two opposing groove sidewalls, and the included angle between the two groove sidewalls is D, where 15°≤D≤75°.

[0032] If D is small, the effect of reducing the pressure between the branch section and the side wall of the placement slot is weak. If D is large, the first slot section occupies a large space in the support, which is not convenient for other components of the CCS assembly to be placed in the support.

[0033] Therefore, when 15°≤D≤75°, it has a strong effect on reducing the pressure between the branch section and the side wall of the placement slot, while ensuring that the first slot section does not occupy too much space in the support, so that other components of the CCS assembly can be placed on the support.

[0034] Optionally, the first groove segment has opposing first groove sidewalls and second groove sidewalls. In the length direction of the bracket, the bracket has a first end side, a second center line, and a second end side spaced apart. In the direction from the first end side to the second end side, the first groove sidewall and the second groove sidewall are arranged sequentially. The area between the first end side and the second center line is a first area, and the area between the second end side and the second center line is a second area. The portion of the branch segment located in the first groove segment extends along the width direction of the bracket. The second groove sidewall located in the first region extends along the width direction of the bracket, and the first groove sidewall located in the second region extends along the width direction of the bracket.

[0035] It is understood that the sidewall of the first trough in the first region is inclined relative to the sidewall of the second trough, so that the width of the first trough segment in the first region tends to increase in the direction closer to the corresponding busbar; the sidewall of the second trough in the second region is inclined relative to the sidewall of the first trough, so that the width of the first trough segment in the second region tends to increase in the direction closer to the corresponding busbar.

[0036] The direction of movement of the branch segment matches the shape of the corresponding first slot segment, which allows the space of the first slot segment to be fully utilized.

[0037] Optionally, the width of the second groove segment tends to increase in the direction close to the main body segment.

[0038] In this way, even if the second connecting end moves with the main body section, the second groove section can still provide space for the branch section to move, resulting in less pressure or even no contact between the branch section and the side wall of the groove. This reduces the possibility of large deformation or even breakage of the branch section.

[0039] Optionally, the first groove segment has two opposing groove sidewalls, and the included angle between the two groove sidewalls is E, where 15°≤E≤75°.

[0040] If E is small, the effect of reducing the pressure between the branch section and the side wall of the placement slot is weak. If E is large, the second slot section occupies a large space in the support, which makes it inconvenient to place other components of the CCS assembly in the support.

[0041] Therefore, when 15°≤E≤75°, it has a strong effect on reducing the pressure between the branch section and the side wall of the placement slot, while ensuring that the second slot section does not occupy too much space in the support, so that other components of the CCS assembly can be placed on the support.

[0042] Optionally, the second groove segment has opposing third groove sidewalls and fourth groove sidewalls. In the length direction of the bracket, the bracket has a first end side, a second center line and a second end side spaced apart, and the third groove sidewall and the fourth groove sidewall are arranged sequentially. The area between the first end side and the second center line is a first area, and the area between the second end side and the second center line is a second area. The portion of the branch segment located in the second groove segment extends along the width direction of the bracket. The fourth groove sidewall located in the first region extends along the width direction of the bracket, and the third groove sidewall located in the second region extends along the width direction of the bracket.

[0043] It is understood that the sidewall of the third groove in the first region is inclined relative to the sidewall of the fourth groove, so that the width of the second groove segment in the first region tends to increase in the direction closer to the main body segment; the sidewall of the fourth groove in the second region is inclined relative to the sidewall of the third groove, so that the width of the second groove segment in the second region tends to increase in the direction closer to the main body segment.

[0044] The direction of movement of the branch segment matches the shape of the corresponding second groove segment, which allows the space of the second groove segment to be fully utilized.

[0045] Optionally, the CCS assembly further includes a PCB disposed on the bracket, the PCB including a first sub-board and a second sub-board that are separately disposed, the bracket having a first center line extending along the length direction of the bracket, and the first center line being disposed between the first sub-board and the second sub-board in the width direction of the bracket.

[0046] In this way, by setting the PCB into a first sub-board and a second sub-board to avoid the first center line passing through the PCB, the PCB is less likely to undergo large deformation, thus reducing the occurrence of PCB damage.

[0047] Optionally, the CCS assembly further includes a PCB and an FFC disposed on the bracket. The FFC includes a main section and a redundant section. The main section is connected to the PCB through the redundant section, and the redundant section is bent.

[0048] In this way, when the FFC and PCB are far apart, the redundant section can gradually unfold into a straight state to avoid pulling the FFC and PCB together, thereby avoiding damage to the FFC and PCB.

[0049] According to a second aspect of this application, a battery is provided, comprising: The aforementioned CCS component; and Battery cell, installed in the CSS component.

[0050] According to a third aspect of this application, an electrical device is also provided, including the aforementioned battery.

[0051] In the CCS assembly of this application embodiment, when the battery cell expands during charging and discharging, it will generate tensile stress along the length direction on the bracket, and the stress tends to accumulate at both ends of the bracket (first end and second end).

[0052] In the thickness direction of the support, a first stress relief groove and a second stress relief groove penetrate the support. In the length direction of the support, the support has a first end side and a second end side. The first stress relief groove extends from the edge of the first end side towards the second end side, and the second stress relief groove extends from the edge of the second end side towards the first end side. This means that the first stress relief groove and the second stress relief groove are set at the stress concentration point. The stress generated by expansion will preferentially act on the area of ​​the first stress relief groove and the second stress relief groove, and the stress is released through the deformation of the groove wall, avoiding the continuous accumulation of stress that would cause the two ends of the support to warp.

[0053] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0054] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0055] Figure 1 This is a schematic diagram of the overall structure of the electrical equipment provided in the exemplary embodiments of this disclosure; Figure 2 This is a schematic diagram of the overall structure of a battery cell provided in an exemplary embodiment of this disclosure; Figure 3 This is a schematic diagram of the structure of the CCS component provided in an exemplary embodiment of this disclosure; Figure 4 yes Figure 3 Enlarged view of point J in the middle; Figure 5 yes Figure 3 Enlarged view at point K; Figure 6 yes Figure 3 A side view of the CCS component along its length. Figure 7 yes Figure 3 A side view of the CCS component in the width direction; Figure 8 yes Figure 7 A magnified view of point L in the middle.

[0056] Explanation of reference numerals in the attached figures: 100. Electrical equipment; 200. Battery; 210. Battery cell; 300. CCS module; 310. Busbar; 320. FFC; 321. Main section; 322. Branch section; 323. Redundancy section; 330. PCB; 331. First sub-board; 332. Second sub-board; 400. Bracket; 410. Tank; 420. First stress relief tank; 430. Second stress relief tank; 440. Placement tank; 441. First tank section; 442. First tank sidewall; 443. Second tank sidewall; 444. Second tank section; 445. Third tank sidewall; 446. Fourth tank sidewall; 450. First end side; 460. Second end side; 470. Polarity marking structure; 480. Clearance hole; 510. First centerline; 520. Second centerline; 530. First area; 540. Second area. Detailed Implementation

[0057] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0058] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0059] Reference Figure 1 and Figure 2 This application provides a battery 200. The battery 200 mentioned in the embodiments of this application refers to a single physical module comprising one or more battery cells 210 to provide higher voltage and capacity. For example, the battery 200 mentioned in this application may include a battery module or battery pack, etc. The battery 200 generally includes a battery case for encapsulating one or more battery cells 210. The battery case can prevent liquids or other foreign matter from affecting the charging or discharging of the battery cells 210.

[0060] The battery cell 210 mentioned in the embodiments of this application may include an electrode assembly and an electrolyte. The electrode assembly includes a positive electrode, a negative electrode, and a separator. The battery cell 210 mainly operates by the movement of metal ions between the positive and negative electrode. The positive electrode includes a positive current collector and a positive active material layer, the positive active material layer being coated on the surface of the positive current collector. The positive current collector includes a positive electrode coating area and a positive electrode tab connected to the positive electrode coating area. The positive electrode coating area is coated with the positive active material layer, while the positive electrode tab is not coated with the positive active material layer. Taking a lithium-ion battery cell 210 as an example, the material of the positive current collector can be aluminum, and the positive active material layer includes positive active material, which can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer, the negative electrode active material layer being coated on the surface of the negative electrode current collector. The negative electrode current collector includes a negative electrode coating area and a negative electrode tab connected to the negative electrode coating area. The negative electrode coating area is coated with the negative electrode active material layer, while the negative electrode tab is not coated with the negative electrode active material layer. The material of the negative electrode current collector can be copper, and the negative electrode active material layer includes negative electrode active material, which can be carbon or silicon, etc. The material of the separator can be PP (polypropylene) or PE (polyethylene), etc.

[0061] Currently, the application of Battery 200 is becoming increasingly widespread. Battery 200 is not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of the application fields of Battery 200, its market demand is also constantly increasing.

[0062] The battery 200 described in this application embodiment is used in electrical device 100.

[0063] Electrical equipment 100 can be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, etc. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. This application embodiment does not impose any special limitations on the above-mentioned electrical equipment 100.

[0064] For ease of explanation, the following embodiments will use a vehicle as an example to illustrate the use of electrical equipment 100.

[0065] The vehicle can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery 200 is installed inside the vehicle, and the battery 200 can be located at the bottom, front, or rear of the vehicle. The battery 200 can be used to power the vehicle; for example, the battery 200 can serve as the vehicle's operating power source. The vehicle may also include a controller and a motor. The controller is used to control the battery 200 to power the motor, for example, to meet the power needs of starting, navigation, and driving the vehicle.

[0066] Reference Figure 3 and Figure 4 The battery 200 includes a battery cell 210 and a CCS (Cell Connection System, battery cell 210 connection assembly) 300, wherein the battery cell 210 is installed in the CCS assembly 300.

[0067] In some embodiments, the CCS assembly 300 includes a support 400 for mounting on the battery cell 210, and the support 400 is provided with an anti-expansion structure for relieving stress in the CCS assembly 300.

[0068] In related technologies, when the battery cell 210 expands during charging and discharging, it generates outward compressive force. This compressive force is directly transmitted to the CCS module 300 assembled with it, causing excessive stress to accumulate inside the CCS module 300. When the stress exceeds the material's tolerance limit, it will cause damage to the CCS module 300, such as, but not limited to, cracking of the bracket 400.

[0069] The support 400 is equipped with an anti-expansion structure, which can release stress and reduce the actual stress value borne by the CCS component 300, thereby reducing the occurrence of damage to the CCS component 300.

[0070] In some embodiments, the anti-expansion structure includes a plurality of grooves 410.

[0071] When the battery cell 210 expands during charging and discharging, it exerts an outward compressive load on the support 400 of the CCS module 300. If the support 400 is a solid structure, the compressive force will accumulate directly inside the support 400, forming concentrated stress. The multiple grooves 410 are equivalent to reserving deformable weak areas on the support 400. When subjected to expansion compressive force, the edges or sidewalls of the grooves 410 can undergo slight elastic deformation (such as slight bending or stretching), absorbing part of the compressive force through their own deformation, avoiding excessive stress concentration at a certain point on the support 400, thereby reducing the overall stress level of the support 400 and preventing cracking.

[0072] Multiple grooves 410 can decompose the originally continuous concentrated stress into dispersed local stress, rather than concentrating it at a certain location, thus avoiding structural damage caused by stress overload from the transmission path.

[0073] In some embodiments, at least one groove 410 is configured as a first stress relief groove 420. In the thickness direction of the support 400, the first stress relief groove 420 penetrates the support 400. In the length direction of the support 400, the first stress relief groove 420 extends from the edge of one end of the support 400 toward the other end.

[0074] When the battery cell 210 is charged and discharged, the expansion in the length direction is significant, and the expansion force is transmitted along the length direction to the end of the bracket 400. The end of the bracket 400 is prone to stress concentration due to the constraint boundary and warping.

[0075] If the first stress relief groove 420 does not penetrate the support 400 in the thickness direction and does not penetrate one end of the support 400 in the length direction, the remaining solid part of the support 400 will still become a rigid path for stress transmission. However, if the first stress relief groove 420 penetrates the support 400 in the thickness direction and extends from the edge of one end of the support 400 to the other end in the length direction, it means that the first stress relief groove 420 forms a disconnected area on the support 400, which is equivalent to directly cutting off the path of expansion force transmission to one end of the support 400 in the length direction. This makes the stress release of the support 400 more thorough and helps to suppress the warping of the corresponding end of the support 400.

[0076] In some embodiments, the CCS assembly 300 is used to mount the battery cell 210. In the length direction of the bracket 400, the size of the first stress relief groove 420 is A, and the thickness of the battery cell 210 is C, where A ≥ 3C.

[0077] If A is small, the stress on the stent 400 is not released completely. Therefore, when A ≥ 3C, the stress on the stent 400 is released more completely, which helps to suppress the warping of the corresponding end of the stent 400.

[0078] In some embodiments, the width of the first stress relief groove 420 is the same as the length of the explosion-proof valve of the battery cell 210.

[0079] If the width of the first stress relief groove 420 is small, the two opposite sidewalls of the first stress relief groove 420 will be relatively close. During the charging and discharging process of the battery cell 210, the two opposite sidewalls of the first stress relief groove 420 are prone to rubbing or even slapping against each other, causing the CCS module 300 to emit a large abnormal noise. Therefore, when the width of the first stress relief groove 420 is the same as the length of the explosion-proof valve of the battery cell 210, the width of the first stress relief groove 420 is larger, and the two opposite sidewalls of the first stress relief groove 420 are farther apart. During the charging and discharging process of the battery cell 210, the two opposite sidewalls of the first stress relief groove 420 are less likely to rub against each other, making the CCS module 300 less likely to emit a large abnormal noise.

[0080] In addition, the width of the first stress relief groove 420 is the same as the length of the explosion-proof valve of the battery cell 210, which helps to reduce the design difficulty of the CCS module 300 and makes the fabrication of the first stress relief groove 420 easier.

[0081] It should be noted that the width of the first stress relief groove 420 is the same as the length of the explosion-proof valve of the battery cell 210, which means that the difference between the width of the first stress relief groove 420 and the length of the explosion-proof valve of the battery cell 210 is no more than 2cm.

[0082] In some embodiments, the bracket 400 has a first centerline 510 extending along the length direction of the bracket 400, and the first centerline 510 passes through a first stress relief groove 420.

[0083] During charging and discharging of the battery cell 210, the support 400 experiences greater stress at the first center line 510. The first center line 510 passes through the first stress relief groove 420, allowing the support 400 to release more stress and thus reduce its deformation. It should be noted that in the width direction of the support 400, the distance from the first center line 510 to each of the opposite ends of the support 400 is equal; that is, the difference between the distance from the first center line 510 to one end of the support 400 and the distance to the other end does not exceed 5 cm. Taking a regular rectangle as an example, the distance from the first center line 510 to each of the opposite ends of the support 400 is equal in the width direction.

[0084] During charging and discharging, the battery cell 210 expands, causing the support 400 to deform and displacing the busbar 310 located on the support 400. The branch segment 322, connected to one end of the corresponding busbar 310, serves as the first connection end. This causes the first connecting end to move along with the busbar 310, thereby causing the branch section 322 to press against the side wall of the placement groove 440. If the pressure between the branch section 322 and the side wall of the placement groove 440 is too large, the branch section 322 may easily undergo large deformation or even break.

[0085] In some embodiments, at least one groove 410 is configured as a placement groove 440. The CCS assembly 300 also includes an FFC 320 (Flexible Flat Cable) 320 and a busbar 310. The FFC 320 includes a main body segment 321 and a branch segment 322 disposed at an angle to the main body segment 321. The branch segment 322 is connected to the busbar 310 and disposed in the placement groove 440. The placement groove 440 has a first groove segment 441 and a second groove segment 444. The first groove segment 441 extends to the corresponding busbar 310, and the second groove segment 444 extends to the main body segment 321. The width of the first groove segment 441 tends to increase in the direction close to the corresponding busbar 310.

[0086] Thus, even if the first connecting end moves with the busbar 310, the first slot section 441 can still provide space for the branch section 322 to move, resulting in less pressure or even no contact between the branch section 322 and the sidewall of the slot 440. This reduces the possibility of the branch section 322 undergoing large deformation or even breaking.

[0087] In some embodiments, the first groove segment 441 has two opposing groove sidewalls, the included angle of which is D, 15°≤D≤75°.

[0088] If D is small, the effect of reducing the pressure between the branch segment 322 and the side wall of the placement slot 440 is weak. If D is large, the first slot segment 441 occupies a large space in the bracket 400, which makes it inconvenient for other components of the CCS assembly 300 to be placed in the bracket 400.

[0089] Therefore, when 15°≤D≤75°, it has a strong effect on reducing the pressure between the branch segment 322 and the sidewall of the placement slot 440, and also ensures that the first slot segment 441 does not occupy too much space in the support 400, so that other components of the CCS assembly 300 can be arranged in the support 400.

[0090] In one example, D may be, but is not limited to, 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65°, 70°, or 75°.

[0091] During charging and discharging, the battery cell 210 expands, causing the support 400 to deform and displacing the busbar 310 located on the support 400. It can be understood that the support 400 has a first centerline 510 extending along the width direction of the support 400. Researchers discovered that during the expansion of the battery cell 210, the first connecting ends located on opposite sides of the first centerline 510 move in opposite directions along the length of the bracket 400.

[0092] To improve the utilization rate of the first slot segment 441, in some embodiments, the first slot segment 441 has opposing first slot sidewalls 442 and second slot sidewalls 443. In the length direction of the support 400, the support 400 has a first end side 450, a second center line 520 and a second end side 460 arranged at intervals. In the direction from the first end side 450 to the second end side 460, the first slot sidewalls 442 and the second slot sidewalls 443 are arranged sequentially. The area between the first end side 450 and the second center line 520 is the first area 530, and the area between the second end side 460 and the second center line 520 is the second area 540. The portion of the branch segment 322 located in the first slot segment 441 extends along the width direction of the support 400. The second groove sidewall 443 located in the first region 530 extends along the width direction of the support 400, and the first groove sidewall 442 located in the second region 540 extends along the width direction of the support 400.

[0093] It should be noted that, along the length of the bracket 400, the distances from the second centerline 520 to the opposite ends of the bracket 400 are consistent; that is, the difference between the distance from the second centerline 520 to one end of the bracket 400 and the distance to the other end of the bracket 400 does not exceed 5 cm. Taking a regular rectangle as an example, the distances from the second centerline 520 to the opposite ends of the bracket 400 are equal along the length of the bracket 400.

[0094] It is understood that the first groove sidewall 442 in the first region 530 is inclined relative to the second groove sidewall 443, so that the width of the first groove segment 441 in the first region 530 tends to increase in the direction close to the corresponding busbar 310; the second groove sidewall 443 in the second region 540 is inclined relative to the first groove sidewall 442, so that the width of the first groove segment 441 in the second region 540 tends to increase in the direction close to the corresponding busbar 310.

[0095] The direction of movement of the branch segment 322 matches the shape of the corresponding first groove segment 441, which allows the space of the first groove segment 441 to be fully utilized.

[0096] During charging and discharging, the battery cell 210 expands, causing deformation of the support 400 and displacement of the main body section 321 of the FFC 320 mounted on the support 400. The branch section 322 is connected to one end of the corresponding busbar 310 as a second connection end. This movement of the second connection end along with the main body section 321 causes the branch section 322 to press against the sidewall of the placement groove 440. If the pressure between the branch section 322 and the sidewall of the placement groove 440 is too high, the branch section 322 may experience significant deformation or even breakage.

[0097] In some embodiments, the width of the second slot segment 444 tends to increase in the direction close to the main body segment 321.

[0098] Thus, even if the second connecting end moves with the main body segment 321, the second groove segment 444 can still provide space for the branch segment 322 to move, resulting in less pressure or even no contact between the branch segment 322 and the sidewall of the placement groove 440. This reduces the possibility of the branch segment 322 undergoing large deformation or even breaking.

[0099] In some embodiments, the first groove segment 441 has two opposing groove sidewalls, the included angle of which is E, 15°≤E≤75°.

[0100] If E is small, the effect of reducing the pressure between the branch section 322 and the side wall of the placement slot 440 is weak. If E is large, the second slot section 444 occupies a large space in the support 400, which makes it inconvenient for other components of the CCS assembly 300 to be arranged in the support 400.

[0101] Therefore, when 15°≤E≤75°, it has a strong effect on reducing the pressure between the branch section 322 and the sidewall of the placement groove 440, and also ensures that the second groove section 444 does not occupy too much space in the support 400, so that other components of the CCS assembly 300 can be arranged in the support 400.

[0102] In one example, E may be, but is not limited to, 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65°, 70°, or 75°.

[0103] During charging and discharging, the battery cell 210 expands, causing the support 400 to deform and displacing the main body segment 321 of the support 400. It can be understood that the support 400 has a first centerline 510 extending along the width direction of the support 400. Researchers discovered that during the expansion of the battery cell 210, the second connecting ends located on opposite sides of the first centerline 510 move in opposite directions along the length of the bracket 400.

[0104] To improve the utilization rate of the second slot segment 444, in some embodiments, the second slot segment 444 has opposing third slot sidewalls 445 and fourth slot sidewalls 446. In the length direction of the support 400, the support 400 has a first end side 450, a second center line 520 and a second end side 460 arranged at intervals. In the direction from the first end side 450 to the second end side 460, the third slot sidewall 445 and the fourth slot sidewall 446 are arranged sequentially. The area between the first end side 450 and the second center line 520 is the first area 530, and the area between the second end side 460 and the second center line 520 is the second area 540. The portion of the branch segment 322 located in the second slot segment 444 extends along the width direction of the support 400. The fourth groove sidewall 446 located in the first region 530 extends along the width direction of the support 400, and the third groove sidewall 445 located in the second region 540 extends along the width direction of the support 400.

[0105] It is understood that the third groove sidewall 445 located in the first region 530 is inclined relative to the fourth groove sidewall 446, so that the width of the second groove segment 444 located in the first region 530 tends to increase in the direction closer to the main body segment 321; the fourth groove sidewall 446 located in the second region 540 is inclined relative to the third groove sidewall 445, so that the width of the second groove segment 444 located in the second region 540 tends to increase in the direction closer to the main body segment 321.

[0106] The direction of movement of the branch segment 322 matches the shape of the corresponding second groove segment 444, which allows the space of the second groove segment 444 to be fully utilized.

[0107] In some embodiments, the CCS assembly 300 includes a bracket 400, which has a first stress relief groove 420 and a second stress relief groove 430. The first stress relief groove 420 and the second stress relief groove 430 extend through the bracket 400 in the thickness direction. In the length direction of the bracket 400, the bracket 400 has a first end side 450 and a second end side 460. The first stress relief groove 420 extends from the edge of the first end side 450 toward the second end side 460, and the second stress relief groove 430 extends from the edge of the second end side 460 toward the first end side 450.

[0108] When the battery cell 210 expands during charging and discharging, it will generate tensile stress along the length of the bracket 400, and the stress tends to accumulate at both ends of the bracket 400 (first end 450 and second end 460).

[0109] In the thickness direction of the bracket 400, a first stress relief groove 420 and a second stress relief groove 430 penetrate the bracket 400. In the length direction of the bracket 400, the bracket 400 has a first end side 450 and a second end side 460. The first stress relief groove 420 extends from the edge of the first end side 450 toward the second end side 460, and the second stress relief groove 430 extends from the edge of the second end side 460 toward the first end side 450. This means that the first stress relief groove 420 and the second stress relief groove 430 are provided at the stress concentration point. The stress generated by expansion will preferentially act on the area of ​​the first stress relief groove 420 and the second stress relief groove 430, and the stress is released through the deformation of the groove wall, avoiding the continuous accumulation of stress that could cause the two ends of the bracket 400 to warp.

[0110] It is worth mentioning that, in some embodiments, at least one groove 410 includes a second stress relief groove 430.

[0111] In some embodiments, the bracket 400 has a first centerline 510 extending along the length direction of the bracket 400, the first centerline 510 passing through a first stress relief groove 420 and / or a second stress relief groove 430.

[0112] When the battery cell 210 is charging and discharging, the support 400 is subjected to greater stress at the first center line 510. The first center line 510 passes through the first stress relief groove 420 and / or the second stress relief groove 430, so that the support 400 can release more stress through the first stress relief groove 420 and / or the second stress relief groove 430, thereby reducing the degree of warping at the end of the support 400.

[0113] In some embodiments, the first stress relief groove 420 is symmetrically arranged about the first centerline 510.

[0114] This ensures that the stress release levels on both sides of the first centerline 510 are relatively similar, avoiding a large stress difference between the two sides of the first centerline 510, thereby reducing the occurrence of warping or local bending.

[0115] In some embodiments, the second stress relief groove 430 is symmetrically arranged about the first centerline 510.

[0116] This ensures that the stress release levels on both sides of the first centerline 510 are relatively similar, avoiding a large stress difference between the two sides of the first centerline 510, thereby reducing the occurrence of warping or local bending.

[0117] In some embodiments, the bracket 400 is provided with a polarity marking structure 470, and the first centerline 510 also passes through the polarity marking structure 470. The polarity marking structure 470 is located between the first stress relief groove 420 and the second stress relief groove 430.

[0118] The polarity marking structure 470 enables operators to quickly and accurately identify the positive and negative polarities of the battery 200, preventing performance degradation, damage, or even safety accidents caused by incorrect polarity connection. The polarity marking structure 470 passes through the first center line 510, making the structure of the bracket 400 more symmetrical and helping to reduce stress differences between the two sides of the first center line 510.

[0119] The polarity marking structure 470 is located between the first stress relief groove 420 and the second stress relief groove 430, and will not affect the normal function of the first stress relief groove 420 and the second stress relief groove 430. The first stress relief groove 420 and the second stress relief groove 430 can effectively alleviate the stress generated by the expansion of the battery cell 210, and the presence of the polarity marking structure 470 will not interfere with the transmission and release path of the stress, ensuring that the bracket 400 can maintain good structural stability while releasing stress, and preventing the bracket 400 from warping, deforming or other problems due to stress concentration.

[0120] The area between the two signal transmission conductors in the bracket 400 is not fully utilized.

[0121] Therefore, in some embodiments, the CCS assembly 300 further includes two signal transmission conductors and multiple busbars 310, with each signal transmission conductor connected to at least one busbar 310. A first stress relief groove 420 and a second stress relief groove 430 are disposed between the two signal transmission conductors in the width direction of the support 400. In this way, the area of ​​the support 400 between the two signal transmission conductors is fully utilized.

[0122] In some embodiments, the signal transmission conductor is configured as an FFC320 (Flexible Flat Cable) 320. This facilitates a more compact structure for the CCS assembly 300. However, the design is not limited to this; in some other embodiments, the signal transmission conductor is configured as an electronic wire. It is worth noting that the signal transmission conductor may, but is not limited to, be used to acquire the voltage of the battery cell 210 to transmit the voltage signal of the battery cell 210, or to acquire the temperature of the battery cell 210 to transmit the temperature signal of the battery cell 210.

[0123] In some embodiments, the CCS assembly 300 is used to mount the battery cell 210. In the longitudinal direction of the bracket 400, the size of the first stress relief groove 420 is A, the size of the second stress relief groove 430 is B, the thickness of the battery cell 210 is C, A≥3C, and / or B≥3C.

[0124] If A is small, the stress on the stent 400 is not released completely. Therefore, when A ≥ 3C, the stress on the stent 400 is released more completely, which helps to suppress the warping of the corresponding end of the stent 400.

[0125] If B is small, the stress on the stent 400 is not released completely. Therefore, when B ≥ 3C, the stress on the stent 400 is released more completely, which helps to suppress the warping of the corresponding end of the stent 400.

[0126] In some embodiments, the CCS assembly 300 is used to mount the battery cell 210, and the bracket 400 is provided with a clearance hole 480, which is used to correspond to the explosion-proof valve of the battery cell 210. In the width direction of the bracket 400, the opposite ends of the clearance hole 480 do not exceed the opposite ends of the first stress relief groove 420.

[0127] If the width of the first stress relief groove 420 is small, the two opposite sidewalls of the first stress relief groove 420 will be relatively close. During the charging and discharging process of the battery cell 210, the two opposite sidewalls of the first stress relief groove 420 are prone to rubbing or even slapping against each other, causing the CCS module 300 to emit a large abnormal noise. Therefore, the two opposite ends of the clearance hole 480 do not exceed the two opposite ends of the first stress relief groove 420, making the width of the first stress relief groove 420 larger and the two opposite sidewalls of the first stress relief groove 420 farther apart. During the charging and discharging process of the battery cell 210, the two opposite sidewalls of the first stress relief groove 420 are less likely to rub against each other, making the CCS module 300 less likely to emit a large abnormal noise.

[0128] In some embodiments, the CCS assembly 300 is used to mount the battery cell 210, and the bracket 400 is provided with a clearance hole 480, which is used to correspond to the explosion-proof valve of the battery cell 210. In the width direction of the bracket 400, the opposite ends of the clearance hole 480 do not exceed the opposite ends of the second stress relief groove 430.

[0129] If the width of the second stress relief groove 430 is small, the two opposite sidewalls of the second stress relief groove 430 will be relatively close. During the charging and discharging process of the battery cell 210, the two opposite sidewalls of the second stress relief groove 430 are prone to rubbing or even slapping against each other, causing the CCS module 300 to emit a large abnormal noise. Therefore, the two opposite ends of the clearance hole 480 do not exceed the two opposite ends of the second stress relief groove 430, making the width of the second stress relief groove 430 larger and the two opposite sidewalls of the second stress relief groove 430 farther apart. During the charging and discharging process of the battery cell 210, the two opposite sidewalls of the second stress relief groove 430 are less likely to rub against each other, making the CCS module 300 less likely to emit a large abnormal noise.

[0130] In some embodiments, the dimensions of the first stress relief groove 420 are the same as the dimensions of the clearance hole 480 in the width direction of the bracket 400.

[0131] The width of the first stress relief groove 420 is the same as that of the clearance hole 480, which helps to reduce the difficulty of designing the CCS component 300 and makes the fabrication of the first stress relief groove 420 easier.

[0132] It should be noted that the width of the first stress relief groove 420 is the same as the size of the clearance hole 480, which means that the difference between the width of the first stress relief groove 420 and the size of the clearance hole 480 is no more than 2cm.

[0133] In some embodiments, the dimensions of the second stress relief groove 430 are the same as the dimensions of the clearance hole 480 in the width direction of the bracket 400.

[0134] The width of the second stress relief groove 430 is the same as that of the clearance hole 480, which helps to reduce the difficulty of designing the CCS component 300 and makes the fabrication of the second stress relief groove 430 easier.

[0135] It should be noted that the width of the second stress relief groove 430 is the same as that of the clearance hole 480, meaning that the difference between the width of the second stress relief groove 430 and the clearance hole 480 is no more than 2cm.

[0136] In some embodiments, the first stress relief groove 420 is U-shaped and the second stress relief groove 430 is U-shaped.

[0137] Reference Figures 5 to 8 The bracket 400 has a first center line 510 extending along the length of the bracket 400. When the battery cell 210 is charged and discharged, the bracket 400 is subjected to greater stress at the first center line 510. In related technologies, the first center line 510 passes through the PCB 330 (Printed Circuit Board) 330, which makes the PCB 330 subjected to greater stress, making it prone to large deformation or even damage.

[0138] Therefore, in some embodiments, the CCS assembly 300 further includes a PCB 330 disposed on the bracket 400. The PCB 330 includes a first sub-board 331 and a second sub-board 332 that are separately disposed. The bracket 400 has a first center line 510 extending along the length direction of the bracket 400. In the width direction of the bracket 400, the first center line 510 is disposed between the first sub-board 331 and the second sub-board 332.

[0139] Thus, by separating PCB330 into a first sub-board 331 and a second sub-board 332 to prevent the first center line 510 from passing through PCB330, PCB330 is less prone to large deformation, thereby reducing the occurrence of PCB330 damage.

[0140] During the charging and discharging process of battery cell 210, battery cell 210 expands, which causes FFC320 and PCB330 to pull together, resulting in greater stress at the connection between FFC320 and PCB330, making FFC320 and PCB330 prone to damage.

[0141] Therefore, in some embodiments, the CCS assembly 300 also includes a PCB 330 and an FFC 320 disposed on the bracket 400. The FFC 320 includes a main body segment 321 and a redundant segment 323. The main body segment 321 is connected to the PCB 330 through the redundant segment 323, which is bent.

[0142] In this way, when FFC320 and PCB330 are far apart, the redundant section 323 can gradually unfold into a straight state to avoid pulling FFC320 and PCB330 together, thereby avoiding damage to FFC320 and PCB330.

[0143] In the description of this application, 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0144] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0145] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0146] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A CCS component (300), characterized in that, include: A bracket (400) is provided with a first stress relief groove (420) and a second stress relief groove (430). In the thickness direction of the bracket (400), the first stress relief groove (420) and the second stress relief groove (430) penetrate the bracket (400). In the length direction of the bracket (400), the bracket (400) has a first end side (450) and a second end side (460). The first stress relief groove (420) extends from the edge of the first end side (450) toward the second end side (460), and the second stress relief groove (430) extends from the edge of the second end side (460) toward the first end side (450). The bracket is provided with a placement slot (440). The CCS assembly (300) also includes an FFC (320) and a busbar (310). The FFC (320) includes a main body section (321) and a branch section (322) arranged at an angle to the main body section (321). The branch section (322) connects to the busbar (310) and is located in the placement slot (440). The placement slot (440) has a first slot section (441) and a second slot section (444). The first slot section (441) extends to the corresponding busbar (310), and the second slot section (444) extends to the main body section (321). The width of the first slot section (441) tends to increase in the direction close to the corresponding busbar (310). The first groove segment (441) has two opposing groove sidewalls, and the included angle between the two groove sidewalls is D, where 15°≤D≤75°.

2. The CCS component (300) according to claim 1, characterized in that, The bracket (400) has a first centerline (510) extending along the length direction of the bracket (400), the first centerline (510) passing through the first stress relief groove (420) and / or the second stress relief groove (430).

3. The CCS component (300) according to claim 2, characterized in that, The first stress relief groove (420) is symmetrically arranged about the first centerline (510); And / or, the second stress relief groove (430) is symmetrically arranged about the first centerline (510).

4. The CCS component (300) according to claim 3, characterized in that, The bracket (400) is provided with a polarity marking structure (470), and the first centerline (510) also passes through the polarity marking structure (470). The polarity marking structure (470) is located between the first stress relief groove (420) and the second stress relief groove (430).

5. The CCS component (300) according to claim 1, characterized in that, The CCS assembly (300) further includes two signal transmission conductors and multiple busbars (310), with each of the two signal transmission conductors connected to at least one of the busbars (310). In the width direction of the bracket (400), the first stress relief groove (420) and the second stress relief groove (430) are disposed between the two signal transmission conductors.

6. The CCS component (300) according to claim 5, characterized in that, The signal transmission conductor is configured as FFC(320).

7. The CCS component (300) according to claim 1, characterized in that, The CCS assembly (300) is used to mount battery cells (210). In the length direction of the bracket (400), the size of the first stress relief groove (420) is A, the size of the second stress relief groove (430) is B, the thickness of the battery cell (210) is C, A≥3C, and / or B≥3C.

8. The CCS component (300) according to claim 1, characterized in that, The CCS assembly (300) is used to mount the battery cell (210), and the bracket (400) is provided with a clearance hole (480), which is used to correspond to the explosion-proof valve of the battery cell (210). In the width direction of the bracket (400), the opposite ends of the clearance hole (480) do not exceed the opposite ends of the first stress relief groove (420), and / or, the opposite ends of the clearance hole (480) do not exceed the opposite ends of the second stress relief groove (430).

9. The CCS component (300) according to claim 8, characterized in that, In the width direction of the bracket (400), the size of the first stress relief groove (420) is the same as the size of the clearance hole (480), and / or, the size of the second stress relief groove (430) is the same as the size of the clearance hole (480).

10. The CCS component (300) according to claim 1, characterized in that, The first groove segment (441) has opposing first groove sidewalls (442) and second groove sidewalls (443). In the length direction of the bracket (400), the bracket (400) has a first end side (450), a second center line (520), and a second end side (460) spaced apart. In the direction from the first end side (450) to the second end side (460), the first groove sidewall (442) and the second groove sidewall (443) are arranged sequentially. The area between the first end side (450) and the second center line (520) is a first area (530), and the area between the second end side (460) and the second center line (520) is a second area (540). The portion of the branch segment (322) located in the first groove segment (441) extends along the width direction of the bracket (400). The second groove sidewall (443) located in the first region (530) extends along the width direction of the bracket (400), and the first groove sidewall (442) located in the second region (540) extends along the width direction of the bracket (400).

11. The CCS component (300) according to claim 1, characterized in that, The width of the second groove segment (444) tends to increase in the direction close to the main body segment (321).

12. The CCS component (300) according to claim 11, characterized in that, The first groove segment (441) has two opposing groove sidewalls, and the included angle between the two groove sidewalls is E, 15°≤E≤75°.

13. The CCS component (300) according to claim 11, characterized in that, The second groove segment (444) has opposing third groove sidewalls (445) and fourth groove sidewalls (446). In the length direction of the bracket (400), the bracket (400) has a first end side (450), a second center line (520) and a second end side (460) spaced apart. In the direction from the first end side (450) to the second end side (460), the third groove sidewall (445) and the fourth groove sidewall (446) are arranged sequentially. The area between the first end side (450) and the second center line (520) is a first area (530), and the area between the second end side (460) and the second center line (520) is a second area (540). The portion of the branch segment (322) located in the second groove segment (444) extends along the width direction of the bracket (400). The fourth groove sidewall (446) located in the first region (530) extends along the width direction of the bracket (400), and the third groove sidewall (445) located in the second region (540) extends along the width direction of the bracket (400).

14. The CCS component (300) according to any one of claims 1 to 13, characterized in that, The CCS assembly (300) further includes a PCB (330) disposed on the bracket (400). The PCB (330) includes a first sub-board (331) and a second sub-board (332) that are separately disposed. The bracket (400) has a first center line (510) extending along the length direction of the bracket (400). In the width direction of the bracket (400), the first center line (510) is disposed between the first sub-board (331) and the second sub-board (332).

15. The CCS component (300) according to claim 1, characterized in that, The CCS assembly (300) also includes a PCB (330) and an FFC (320) disposed on the bracket (400). The FFC (320) includes a main body segment (321) and a redundant segment (323). The main body segment (321) is connected to the PCB (330) through the redundant segment (323), and the redundant segment (323) is bent.

16. A battery (200), characterized in that, include: The CCS component (300) as described in any one of claims 1 to 15; as well as A battery cell (210) is installed in the CCS assembly (300).

17. An electrical appliance (100), characterized in that, Includes the battery (200) as described in claim 16.

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