1306 results about "Dry cell" patented technology

The invention relates to the technical field of solar cells, and provides a back contact cell assembly and a photovoltaic system.The back contact cell assembly comprises a plurality of cell strings and bus bars, a first welding strip comprises a body section, a bent section and an extending section, and the body section is welded to a first cell piece through a welding spot; the extension section extends between a second welding strip and a fourth welding strip which are adjacent to each other on the second battery piece and is at least partially overlapped with the bus bar so as to be welded with the bus bar, and the body section and the extension section are connected through a bending section; in the thickness direction of the back contact battery assembly, the extension section and the second welding strip do not have an overlapped part, and in the second direction, the distance D between the extension section of at least one first welding strip and the adjacent second welding strip meets the following relational expression: 1 mmlt; d < = 0.63 * arctan (1.8 * L * D2 + H) * (D1-W). Therefore, the hidden crack risk in the lamination process can be reduced, the electrical loss of the assembly can be reduced, the double-sided rate of the assembly can be improved, and the difficulty of the manufacturing process can be reduced.

The invention provides a back contact battery assembly and a photovoltaic system, a back contact battery can comprise a plurality of battery strings and a bus bar, a first welding strip comprises a first body section connected with a first battery piece and a first extension section which extends to a second battery piece and is at least partially overlapped with the bus bar, the second welding strip comprises a second body section and a second extension section. And in the thickness direction of the back contact battery assembly, the first extension section and the second extension section do not have an overlapped part. The bus bar is provided with a protruding section protruding towards the side away from the second battery piece at the second extension section, and the bus bar is provided with a recessed section recessed towards the side of the second battery piece at the first extension section. For at least part of the cross section of the bus bar, the included angle alpha between the connecting line between the highest point of the convex section and the lowest point of the adjacent concave section and the plane where the second battery piece is located meets the following formula: 0.075 < = tan alpha < = 3. In this way, the hidden crack risk in the laminating process can be reduced.

The invention relates to the technical field of photovoltaic energy storage cabinets, in particular to a safety type photovoltaic energy storage cabinet. Comprising an outer shell, a plurality of inner shells are fixedly connected in the outer shell, battery packs are detachably and fixedly connected in the inner shells, cooling fans which are symmetrically distributed are arranged outside the outer shell, each inner shell is provided with two cooling row holes which are symmetrically distributed, and the inner shells are slidably connected with two plugging frames which are symmetrically distributed. The two plugging frames on the inner shell are jointly provided with a connecting frame, the inner shell is fixedly connected with a sliding rail, an electric sliding block is slidably connected into the sliding rail, and the electric sliding block of the sliding rail is fixedly connected with the adjacent connecting frame. According to the invention, the temperatures of the plurality of battery packs during charging are respectively detected, and heat dissipation of different degrees is carried out according to different temperatures of the plurality of battery packs, so that the plurality of battery packs are at proper temperatures, cooling resources are allocated as required, energy is saved, and operation cost is reduced.

The invention provides a back contact battery assembly and a photovoltaic system, a back contact battery can comprise a plurality of battery strings and a bus bar, each battery string comprises a plurality of battery pieces which are sequentially connected in series along a first direction, and the plurality of battery pieces comprise a first battery piece arranged at the end part of the battery string and a second battery piece adjacent to the first battery piece; the back of the first cell is provided with a first solder strip, and the back of the second cell is provided with a second solder strip. The first welding strip is connected with the first battery piece and is provided with an extension section which extends to the second battery piece and is at least partially overlapped with the bus bar, and the second welding strip comprises a main body section which is not overlapped with the bus bar and an extension section which is overlapped with the bus bar; the main body section extends along the first direction, an extension line of the main body section in the first direction is at least partially overlapped with the first welding strip, the extension section and the main body section are mutually spaced in the second direction, and the extension section and the extension section do not have an overlapped part in the thickness direction of the back contact battery assembly. In this way, the hidden crack risk in the laminating process can be reduced.

The invention provides a photovoltaic module, and relates to the technical field of photovoltaics. The photovoltaic module comprises an interconnection piece and a plurality of battery pieces. The battery piece comprises a current collection electrode which is arranged on the side, away from the doped conductive layer, of the passivation layer, the current collection electrode comprises a transmission part and a plurality of contact parts, and interval areas exist between the adjacent contact parts in the first direction; the transmission part is arranged on one side, far away from the semiconductor substrate, of the contact part and is in contact connection with the plurality of contact parts; the plurality of interconnection parts are electrically connected with the current collection electrodes; along the second direction, the plurality of interconnection parts are arranged in rows to form interconnection part rows; in the battery piece, the areas located in the two opposite boundaries of the interconnection part columns in the first direction are confluence areas, and at least one confluence area is provided with at least one part of at least one contact part and a partial transmission part. The pulling force of the current collection electrode and the semiconductor substrate can be enhanced, falling or pulling-off is avoided, and meanwhile collection and transmission of current are facilitated.

The invention discloses a phase change immersed cooling energy storage system which comprises an energy storage set and a cooling system. The energy storage group comprises a plurality of battery packs; the cooling system comprises a low-temperature cooling loop, a high-temperature cooling loop and condensing equipment, the low-temperature cooling loop adopts a circulating pump, and the high-temperature cooling loop adopts a compressor and a thermostatic expansion valve; and the condensing equipment cools the phase change cooling medium treated by the low-temperature cooling loop or the high-temperature cooling loop, and conveys condensed liquid back to the energy storage group. The battery cell is completely immersed by the cooling liquid, so that the temperatures of all parts of the battery cell tend to be consistent, and the influence on the battery cell performance due to overlarge temperature difference is avoided; the battery cell is rapidly cooled in a mode of heat absorption and gasification of the phase change cooling liquid, and the heat dissipation efficiency is higher than that of a traditional heat dissipation mode; two sets of cooling loops are adopted, the low-temperature cooling loop for pump-driven circulation is adopted at the low operating environment temperature, and the high-temperature cooling loop for compressor refrigeration is started at the high operating environment temperature, so that the overall service life of the system is prolonged, and the overall energy consumption is reduced.

The utility model discloses a battery pack upper cover and an energy storage device, the battery pack upper cover is of an integrally formed structure, the battery pack upper cover comprises a top plate, a first side plate and a second side plate which are oppositely arranged on two sides of the top plate, and a first end plate and a second end plate which are oppositely arranged on the other two sides of the top plate, and the battery pack upper cover is provided with a plurality of inwards sunken pressing ribs. The energy storage device is provided with a lower box body with a containing cavity, a plurality of battery packs located in the containing cavity and the battery pack upper cover in the first embodiment, and the battery pack upper cover is matched with the lower box body to seal the containing cavity. The battery pack upper cover disclosed by the utility model can be formed at one time, is beneficial to standardized production, reduces the production and processing cost, and accelerates the product delivery speed; according to the energy storage device, the battery pack upper cover is used, so that the battery cells and other devices in the energy storage device can be protected, the protection and touch prevention effects are achieved, meanwhile, the IP67 sealing performance test is met, and the production and delivery requirements of energy storage device products are met.

The invention discloses a liquid-cooled dynamic battery cluster temperature management protection device and a temperature control method, and relates to the field of battery temperature control, and the temperature management protection device comprises a liquid cooling control terminal which is used for butting and integrating an energy storage end of a plurality of battery units and providing circulating liquid cooling synchronous with the starting of the battery units, control instructions are edited, received and issued; the data acquisition module is used for dividing a liquid cooling circulation route into a plurality of sections and detecting temperature data of liquid in different sections in the charging and discharging state process of each battery unit; the temperature deviation of each section is identified in real time, a problem area is rapidly positioned, more comprehensive and accurate temperature distribution can be obtained, abnormal conditions are helped to be identified and positioned in real time, the response speed to transient load change is improved, it is ensured that the battery is kept in a safe temperature range in the rapid charging and discharging process, and the battery quality is improved. And fault hidden dangers caused by insufficient temperature monitoring capability are avoided.

The invention discloses a semi-solid-state lithium ion battery and a preparation method thereof, and belongs to the technical field of lithium ion batteries, the preparation method of the semi-solid-state lithium ion battery disclosed by the invention comprises the following steps: injecting a semi-solid-state electrolyte into a dry battery in two times, and curing for two times, so that the semi-solid-state electrolyte is partially cured and then is transited to be completely cured, thereby obtaining the semi-solid-state lithium ion battery. The gelation process of the semi-solid electrolyte is controllable, and the curing reaction is more uniform; and meanwhile, formation and curing are completed at the same time, gas generated in the formation process can be discharged, the problem of lithium precipitation caused by a large number of bubble mark residues due to the fact that battery interface bubble holes cannot be closed after curing is solved, and the uniformity of an electrode interface is improved.

The invention relates to the technical field of solar cells, and provides a back contact cell assembly and a photovoltaic system.The back contact cell assembly comprises a plurality of cell string units, and back contact cell pieces, covered with insulating strips and bus bars, in cell strings of the cell string units are first cell pieces; and the back contact battery piece which is not covered with the insulating strip and the bus bar is a second battery piece. And the length W of the first battery piece in the first direction meets the following relational expression: W is greater than or equal to W0 + D1 + (1-a%) * (D2-D1). Therefore, on one hand, the insulating strip and the bus bar are arranged on the back surface of the back contact battery piece of the battery string, so that the effective light receiving area of the assembly can be increased, and the attractiveness of the assembly is improved. And on the other hand, the size of the first battery piece covered with the insulating strip and the bus bar is specially designed, and the size of the first battery piece covered with the insulating strip and the bus bar in the first direction is correspondingly increased, so that the double-sided rate of the module can be improved, and the power of the module can be ensured.

The invention provides a wide-temperature-range high-safety battery system and heat management thereof, and relates to the technical field of battery systems, the wide-temperature-range high-safety battery system comprises a battery box body, a battery leaching and heat dissipation integrated module and a multi-stage balanced leaching type topological structure; the battery leaching and heat dissipation integrated module comprises a plurality of battery modules, a frame and a module shell, a through hole is formed in the frame, and a gap cavity is formed below the module shell; the multi-stage balanced leaching type topological structure comprises a pump, a return pipeline, a liquid storage tank, a liquid feeding main pipeline, a plurality of shunting auxiliary pipelines and a plurality of nozzles, and the upper end and the lower end of the return pipeline are communicated with the liquid storage tank and the gap cavity respectively. And the liquid storage tank and the pump are matched to realize switching of multiple functions of leaching type liquid heating, cooling and heat preservation of the battery system, so that the heating and cooling rate is increased, the energy consumption is reduced, and the temperature uniformity is improved.

The utility model discloses an integrated control high-voltage cascade energy storage device, which comprises an integrated main controller and three single-phase energy storage mechanisms, and the three single-phase energy storage mechanisms adopt a chain type three-phase star topology structure. Each single-phase energy storage mechanism is formed by cascading a plurality of PCS power modules, the direct current sides of the PCS power modules are connected with battery clusters in parallel, and each battery cluster is composed of a plurality of battery packs; the controlled end of each battery pack is connected with one single battery management unit, each energy storage chain link is controlled by one integrated cluster unit control module, and information interaction is carried out between each integrated cluster unit control module and the integrated main controller through an optical fiber ring network. According to the utility model, the information interaction between the battery cluster and the power unit and between the integrated cluster unit control module and the integrated main controller is realized, the control logic of the information interaction between the control part of the power conversion system PCS and the battery management system BMS is simplified, the response speed is improved, and the stable operation of the energy storage device is ensured.

The invention relates to the technical field of fuel cells, in particular to a heat dissipation device for hydrogen fuel cell stacks, which comprises a through pipe, a drainage fan, drainage plates and an opening degree adjusting assembly, a plurality of cell stacks are arranged between two end plates, a cooling cavity is formed between the adjacent cell stacks, and cooling plates are arranged on two sides of each cell stack, so that the heat dissipation effect is improved. External air is conveyed to the cooling cavities through the penetrating pipes penetrating through the end plates and the cell stack, airflow power is provided by the drainage fans, the air exchanges heat with the cooling plates in the cooling cavities and then is guided to the outer side surface of the cell stack through the drainage plates arranged around the cooling cavities, and directional cooling of a cell stack shell is achieved. The opening adjusting mechanism is arranged in the cooling cavity, and the distance between the drainage plate and the surface of the cell stack can be adjusted in real time according to temperature feedback, so that the section and the flow speed of an airflow outlet are changed, the heat dissipation intensity of the outer side of the cell stack is dynamically controlled, and the problem that the temperature of the outer side of an existing hydrogen fuel cell stack is not easy to control is solved.

The invention discloses a TPMS structure-based phase change liquid cooling coupling battery thermal management device, and relates to the technical field of battery thermal management, the TPMS structure-based phase change liquid cooling coupling battery thermal management device comprises a plurality of battery packs, a battery box body, a first liquid cooling pipeline, a second liquid cooling pipeline and a plurality of cooling plates; the battery packs and the cooling plates are sequentially arranged in the battery box body at intervals; the cooling plate comprises a plate core and a shell, the plate core of a three-period minimum curved surface structure is arranged in the shell, and a liquid cooling area and a phase change cooling area which are isolated from each other are defined by the plate core and the shell. The liquid cooling area is communicated with a liquid cooling inlet and a liquid cooling outlet of the shell to form a liquid cooling channel, and is communicated with an external liquid cooling circulating device through a first liquid cooling pipeline and a second liquid cooling pipeline to realize liquid cooling; and a phase-change material is injected into the phase-change cooling area to realize phase-change cooling. According to the invention, the plate core with a small specific surface area and a three-period extremely-small curved surface structure is adopted to manufacture the cooling plate, so that effective coupling of liquid cooling and phase change cooling is realized, and high heat exchange efficiency and good temperature uniformity can be realized.

The utility model relates to a chassis battery replacement system, which comprises a transfer lifting device, a battery storage device, a disassembly transfer device and a transfer stacking device, the transfer lifting device is provided with a first lifting frame through two side frames which are distributed at intervals, and the first lifting frame is provided with clamping frames which are symmetrically distributed in the longitudinal direction; the multiple battery storage devices are distributed on the two transverse sides of the transfer lifting device, a plurality of batteries are placed on the battery storage devices through supporting frames, and the disassembly transfer device and the transfer stacking device are correspondingly distributed on the two longitudinal sides of the transfer lifting device. The disassembling and transferring device comprises a longitudinal steel rail, a longitudinal moving frame, a slewing bearing, a supporting plate, a transverse moving mechanism and a disassembling elevator, the disassembling elevator is used for disassembling and assembling the batteries on the chassis, and the transferring and stacking device comprises a transverse steel rail, a transverse moving frame, a second lifting frame and a longitudinal telescopic pallet fork. The device has the advantages of being simple in structure, convenient to operate and control, good in adaptability, high in safety and high in practicability.

The invention discloses a solid-state lithium battery and a preparation method thereof and belongs to the technical field of battery processing. The preparation method of the solid-state lithium battery comprises the following steps: S1, assembling a positive plate, a diaphragm and a negative plate into a dry cell; wherein a composite film layer is cured on a current collector base material of the negative plate, and rubidium nitrate is added into the composite film layer; s2, injecting the gel precursor solution into a dry battery cell, fully standing, and charging the battery cell to 100% SOC; wherein the gel precursor solution contains an electrolyte, a cross-linking agent and an initiator; and S3, heating to initiate a chemical cross-linking reaction of a cross-linking agent in the gel precursor solution, and carrying out in-situ polymerization and curing on the surface of each component of the dry cell and in internal pores thereof to obtain a gel polymer electrolyte, thereby forming the solid-state lithium battery. According to the invention, the interface resistance can be reduced, and the lithium ion transmission capability and efficiency are improved.

The invention discloses a hydrogen fuel cell stack which comprises a pair of end plates, a plurality of cell units are stacked between the pair of end plates, each cell unit comprises a cathode plate and an anode plate, each end plate is provided with an end plate connecting hole, the cathode plate in each cell unit is provided with a cathode plate connecting hole, and the anode plate in each cell unit is provided with a cathode plate connecting hole. The anode plate in each battery unit is provided with an anode plate connecting hole, the end plate connecting hole corresponds to the cathode plate connecting hole of each cathode plate and the anode plate connecting hole of each anode plate, and the end plates and all the battery units are fixed through the end plate connecting holes, the cathode plate connecting holes and the anode plate connecting holes; an air flow field capable of spirally conveying air from inside to outside is arranged on the plate surface of each negative plate; and a hydrogen flow field capable of spirally conveying hydrogen from outside to inside is arranged on the plate surface of each anode plate. The method has the advantage that the condition that the middle of the polar plate is expanded and bulged due to uneven heating in the working process of the electric pile can be effectively prevented.

The invention relates to the technical field of new energy, in particular to a new energy battery pack with a protection structure, which comprises a battery frame, a storage battery, a supporting plate, a limiting assembly, a driving assembly, a monitoring assembly and an eruption ejection mechanism. A plurality of battery packs are arranged in the battery frame, and each battery pack comprises a plurality of battery boxes. The storage battery is inserted into the battery box, and the supporting plate is rotationally connected with the battery box. The limiting assembly is connected with the supporting plate, so that the supporting plate is supported and limited through the matching of the limiting assembly and the battery box. The monitoring assembly is connected with the battery box and electrically connected with the controller. And the eruption ejection mechanism is connected with the battery box, triggers the driving assembly in a working state, and ejects and pushes the storage battery in an abnormal state out of the battery frame after limiting of the supporting plate is relieved. The state of the battery can be monitored in real time, the storage battery is ejected to be separated from the vehicle body when the storage battery breaks down and is about to spontaneously ignite, the vehicle body and personal safety is guaranteed, and normal running of the vehicle cannot be affected after a single battery is ejected.

The invention is applicable to the field of photovoltaic technology, and provides a battery assembly and a photovoltaic system, the battery assembly comprises a plurality of battery strings, a glass plate and a reflective layer; each battery string comprises a plurality of battery pieces, each battery piece comprises a chamfered edge with a chamfer and a straight edge without a chamfer, the chamfered edges and the straight edges in the battery pieces are opposite, and the plurality of battery pieces are sequentially arranged along a first direction; the plurality of battery strings are arranged in parallel, the arrangement directions of the battery pieces in the adjacent battery strings are opposite, and a string spacing is formed between the adjacent battery strings; a plurality of battery strings are arranged on one surface of the glass plate, the reflective layer is arranged on the glass plate, the reflective layer comprises a longitudinal film covering the distance between the strings, and a widening part is arranged on the longitudinal film to cover the gap between four adjacent battery pieces. The longitudinal film covers the string spacing, so that the light which originally directly passes through the string spacing is reflected and then utilized by the battery piece; the chamfered edges of the battery pieces enable the gaps of the battery strings to be increased, and the widened parts on the longitudinal films can cover the gaps among the four adjacent battery pieces, so that the light utilization is optimized.

The utility model discloses a sodium ion battery cap welding device, which relates to the technical field of laser welding and comprises a workbench, two sliding rods are fixedly connected to two sides of the axis of the top end of the workbench, a first tray is slidably connected to the outer walls of the sliding rods, and the axis of the first tray corresponds to the axis of the workbench. A plurality of battery fixing pieces are fixedly installed at the positions, close to the edge, of the top of the first tray at equal intervals, a cantilever is fixedly connected to one end of the top of the workbench, and a second tray is fixedly connected to the bottom of the tail end of the cantilever; a plurality of battery welding assemblies corresponding to the battery fixing pieces are fixedly connected to the positions, close to the edge, of the bottom of the second tray at equal intervals. According to the technical scheme provided by the utility model, the laser welding technology is matched with the balls, so that the laser welding head can rotate around the sodium ion battery cap at a constant speed, the cap can be uniformly welded on the battery, and the defective product occurrence probability that the cap falls off due to single-point welding or non-uniform welding is reduced.

Described herein are systems, methods, processes, and devices for transferring energy from an uncrewed battery-recharging vehicle to an electric vehicle, such as a car. In one example, the uncrewed battery-recharging vehicle is delivered by a distribution vehicle close to the location of the electric vehicle. The uncrewed battery-recharging vehicle identifies the electric vehicle, properly aligns itself underneath the parked electric vehicle, and transfers energy to the rechargeable battery component of the electric vehicle.

The invention relates to a photovoltaic module, which can enhance the pulling force of battery pieces on a welding strip, and comprises a plurality of battery pieces, a plurality of thin grid lines are arranged on the welding surfaces of the battery pieces, the thin grid lines extend along a first direction, the thin grid lines are arranged at intervals along a second direction, and the second direction is perpendicular to the first direction; the plurality of welding strips are fixed on the welding surface, the welding strips extend along a second direction and are electrically connected with the fine grid lines, each welding strip is connected with the welding surface through a plurality of glue points, and the glue points and the fine grid lines are staggered; wherein all the glue points are distributed into a middle area, two edge areas, an interconnection side area and a non-interconnection side area, the two edge areas are located on the two sides of the middle area in the first direction, the interconnection side area and the non-interconnection side area are located on the two sides of the middle area in the second direction, and the distribution density of the glue points in the interconnection side area is larger than that of the glue points in other areas. And the distribution density of the glue points in the edge area is greater than that of the glue points in the middle area. The invention further provides a printing screen.

The invention provides a back contact battery assembly and a photovoltaic system, a back contact battery can comprise a plurality of battery strings and a bus bar, a first welding strip comprises a first body section connected with a first battery piece and a first extension section which extends to a second battery piece and is at least partially overlapped with the bus bar, the second welding strip comprises a second body section and a second extension section. And in the thickness direction of the back contact battery assembly, the first extension section and the second extension section do not have an overlapped part. The bus bar is provided with a protruding section protruding towards the side away from the second battery piece at the second extension section, and the bus bar is provided with a recessed section recessed towards the side of the second battery piece at the first extension section. For at least part of the cross section of the back contact battery assembly at the bus bar, the height difference between the highest point of the first extension section and the highest point of the adjacent convex section is smaller than the thickness of the first welding strip. In this way, the hidden crack risk in the laminating process can be reduced.

The invention discloses AGV automatic battery replacing equipment, a battery replacing method, a battery replacing system and a storage medium, the system comprises a control system, a charging station, a plurality of battery replacing points, a plurality of working AGVs and a plurality of battery replacing AGVs, at least two battery cabins are arranged on each working AGV, at least one battery cabin is an empty cabin, and a first battery replacing mechanism is arranged in each battery cabin; a plurality of battery storage cabin groups are arranged on the battery replacement AGV, at least one battery storage cabin in each group is an empty cabin, and a second battery replacement mechanism is arranged in each battery storage cabin; when the working AGV carries out battery replacement, a first-in and second-out mode is adopted for battery replacement. The problems of work interruption and low efficiency caused by a fixed charging station in an existing AGV system are solved. The working AGV can automatically replace the battery under the condition that the working AGV does not return to the charging station. Meanwhile, through accurate butt joint and an intelligent scheduling mechanism, high efficiency and automation of battery replacement are realized, task delay is reduced, the overall operation efficiency is improved, and the system operation cost is reduced.

The invention is suitable for the technical field of solar cells, and provides a back contact cell module and a photovoltaic system. The back contact battery assembly comprises a battery string which comprises a plurality of battery pieces, each battery piece is provided with a first face and a second face which are opposite, the second face is provided with a plurality of grid lines, the grid lines extend in the first direction and are sequentially arranged in the second direction, and the first direction and the second direction intersect; the plurality of welding strips are connected with two adjacent battery pieces, and the plurality of welding strips are sequentially arranged along the second direction and cover the grid lines; in the second direction, the welding strip is provided with a first long side and a second long side which are opposite; wherein in the first direction, the distance from at least part of the first long edge of the welding strip to the grid line covered by the welding strip is gradually increased. Therefore, the distance from at least part of the first long edge of the solder strip to the grid line covered by the solder strip is gradually increased, so that the battery assembly has different current densities and heat distribution, and the effect of improving the performance and the efficiency of the battery assembly is achieved.

The invention discloses an automatic monitoring system and method of a lead storage battery, relates to the technical field of battery monitoring, and solves the technical problem that the accuracy and efficiency of an automatic monitoring system of a battery are relatively low due to the fact that frequent charging and discharging and the influence of corresponding interval duration on battery aging are not fully considered in the prior art. A plurality of time clusters are generated according to charging and discharging data; calculating a plurality of battery aging coefficients according to the plurality of time clusters and calculating and monitoring a battery aging coefficient; calculating a monitored battery pack aging coefficient according to the monitored battery aging coefficient and then generating a battery pack estimated service life; an alarm signal is generated according to the estimated service life of a battery pack, charging and discharging behaviors of a battery are converged, the influence of frequent charging, the charging and discharging process and other factors on battery aging is considered, the state of each stage of a battery life cycle is calculated, the condition of the battery life cycle is effectively mastered, and the battery life cycle is accurately and accurately determined. And the accuracy and the efficiency of the automatic battery monitoring system are improved.

The invention is suitable for the technical field of solar cells, and particularly relates to a photovoltaic module and a photovoltaic system.The photovoltaic module comprises a plurality of battery pieces, and each battery piece comprises a battery piece substrate; the main grid is arranged on at least one surface of the battery piece substrate; the PAD points are arranged on the main grid and are distributed at intervals along the extension direction of the main grid; the PAD points comprise end part PAD points close to the end part of the main grid and middle PAD points positioned between the end part PAD points; the height of at least one end PAD point is greater than the height of at least one middle PAD point. By designing the height of the end part PAD point close to the end part of the main grid to be higher than the height of the middle PAD point, the end part PAD point is higher and fuller, so that the over-welding condition of the end part PAD point close to the end part of the main grid is avoided, and the welding quality and the product quality are ensured.

The invention discloses a battery replacement system and method for a battery replacement cabinet, relates to the technical field of battery management, and solves the technical problem that the battery replacement effect is poor due to the fact that the priority is relatively fixed by taking the electric quantity of a battery as a priority judgment standard in the prior art. A battery health score is generated based on battery cabinet data, and an exclusive charging strategy is generated; generating a battery dynamic priority based on the battery cabinet data and the battery health score; the batteries are replaced according to the sequence of the dynamic priorities of the batteries from high to low, the current state and the overall health state of the batteries are monitored in real time, and the battery replacement priority of the batteries is dynamically adjusted through the multi-source data of the batteries, so that the batteries in the battery replacement cabinet can be replaced in an optimal mode, and the effect of the battery replacement method is improved.

The utility model discloses a mounting structure, a battery device and electric equipment, and relates to the technical field of batteries, the battery device comprises a battery box body, a plurality of battery monomers arranged in the battery box body, a box body beam and a mounting structure, the battery box body is provided with a connecting hole, and the mounting structure comprises a first locking piece and a second locking piece; one end of the first locking piece is connected to the box body beam, and the other end of the first locking piece abuts against the inner wall of the battery box body and is arranged around the connecting hole; at least part of the second locking piece is arranged outside the battery box body, one end of the second locking piece penetrates through the connecting hole and extends into the battery box body so as to be connected with the first locking piece, an assembly hole is formed in the end, away from the first locking piece, of the second locking piece, and the assembly hole is configured to be connected with a fastener of a carrier in a matched mode. According to the technical scheme provided by the invention, the problem of high airtight failure risk of the battery device can be solved.