692 results about "Dry cell" patented technology

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 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 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 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 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 battery, electric equipment and an energy storage device, and relates to the technical field of energy storage and power batteries. The battery comprises a plurality of battery monomers, a metal bandage and an insulating part, the plurality of battery monomers are arranged side by side, and each battery monomer comprises a metal shell; the metal bandage bypasses the plurality of battery monomers and is used for binding the plurality of battery monomers; the insulating part is connected to the battery monomer or the metal bandage, and at least part of the insulating part is positioned between the battery monomer and the metal bandage; the insulation resistance value between the metal bandage and each metal shell is greater than or equal to A * B * 1000 ohm, A is the nominal voltage of the single battery, and the unit is V; b is the series connection number of the single batteries, and the unit is one. According to the technical scheme provided by the utility model, the problem that insulation failure is easy to occur between the metal bandage and the battery monomer during thermal runaway can be improved.

A lithium battery monitoring management system based on big data comprises a battery module frame, a plurality of battery bins are arranged in the battery module frame in a matrix mode, the battery module frame is connected with a data processing module through an interaction module, and the data processing module is electrically connected with an ultrasonic detection module; the ultrasonic detection module comprises an ultrasonic transmitting unit and an ultrasonic receiving unit and is used for accurately detecting microdefects in the battery, the ultrasonic transmitting unit is an ultrasonic transducer with adjustable frequency, the transmitting frequency range of the ultrasonic transmitting unit is 0.5 MHz to 20 MHz, and the ultrasonic transmitting unit is used for transmitting ultrasonic waves to the battery; the ultrasonic receiving unit is matched with the ultrasonic transmitting unit, receives the ultrasonic signals reflected and transmitted by the battery and converts the ultrasonic signals into electric signals. Tiny damage in the battery is accurately detected through the arranged ultrasonic detection module, the hidden danger recognition precision is greatly improved, potential faults can be perceived in the early stage, precautions are taken in the bud, the sudden failure risk of the battery is reduced, and the overall service life of the battery is prolonged.

The invention discloses a lithium battery fire extinguishing system, and belongs to the technical field of lithium battery fire extinguishing, the lithium battery fire extinguishing system comprises an energy storage cabin, the energy storage cabin is used for arranging a plurality of battery clusters, each battery cluster comprises a plurality of stacked battery modules, a fire water monitor is installed in the energy storage cabin, and the fire water monitor sprays a fire extinguishing medium to any battery cluster; a water collecting tank is arranged at the bottom of the battery cluster and is used for collecting the fire extinguishing medium flowing down from a plurality of battery modules of the battery cluster; a liquid supply assembly is arranged in the water collecting tank, filling openings are formed in the outer box body of the battery module, and the liquid supply assembly supplies the fire extinguishing medium in the water collecting tank into any filling opening through a pipeline assembly. The device has battery cluster external fire extinguishing and battery module internal fire extinguishing medium filling functions, realizes cyclic utilization from external fire suppression to internal cooling of the battery module after the fire extinguishing medium is sprayed, and improves economical efficiency and reliability; the system is low in complexity and easy to overhaul and maintain; the modification cost is low.

A powder dispensing apparatus having an elongate wedge-shaped hopper including one or more fluidized plates is described. The powder dispensing apparatus can be positioned above a pair of calender rolls to distribute a powder, such as a dry electrode material onto the calender rolls. Such fluidized wedge shaped hopper advantageously allows for an accurate and / or controlled rate of powder distribution across or substantially across the length of a calender roll.

The present application relates to the field of photovoltaic technology, and discloses a half-cut photovoltaic cell string and a photovoltaic module. The half-cut photovoltaic cell string comprises multiple cells and multiple ribbons. By arranging the multiple cells in a first direction, the cut surface of one of two adjacent cells corresponds to the isolation surface of the other of the two adjacent cells, and the orientations of the positive and negative electrodes of the cells are kept consistent, facilitating subsequent welding operations; a same ribbon connects two adjacent cells, achieving series connection of the multiple cells; in addition, by configuring the distance L1 between each ribbon and a first intersection line and the distance L2 between the ribbon and a second intersection line to satisfy the condition L1>2×L2, the distance from the ribbon to a PN junction on the cut surface is much greater than the distance from the ribbon to a corresponding position of a PN junction on the isolation surface, thereby avoiding the risk that the ribbon is too close to or in contact with the exposed PN junction on the cut surface, mitigating electric leakage or short circuits, and improving the reliability of the half-cut photovoltaic cell string.

An electrode fabrication system is provided. The system includes a powder feeding unit, a powder charging unit, a carrier roller, a carrier roller charging unit and a calendering unit. The dry powder particles applied from the powder feeding unit are charged and attached onto the carrier roller surface through an electrostatic process by applying a proper bias voltage. The charged powder attached on the surface of carrier roller are released and deposited onto a moving foil web to form a powder coating layer through an electrostatic process by applying a proper bias voltage. The powder coating layer is conveyed to the calendering unit and densified with or without heat to form an electrode.

The present disclosure provides a dry battery electrode comprising a. at least one active material; b. at least one conductive carbon; and c. at least one fluorinated binder; wherein the active material is selected from natural graphite, silicon, synthetic graphite, expanded graphite, or combinations thereof. The present disclosure further provides a lithium-ion battery comprising the dry battery electrode as disclosed herein. Furthermore, the present disclosure provides a process for preparing the electrode.

The invention relates to a high-voltage distribution box and an automobile, the high-voltage distribution box comprises a quick-plug connector and a cable connector, the quick-plug connector is used for connecting the positive and negative electrodes of the battery side of the high-voltage distribution box with the positive and negative electrodes of a battery system comprising a plurality of battery boxes; the cable gland connector is used for connecting the positive and negative electrodes of the output side of the high-voltage distribution box with the positive and negative electrodes of electric equipment; the anode and cathode of the battery side of the high-voltage distribution box are respectively connected with the anode and cathode of the output side in the high-voltage distribution box. The interface for connecting the high-voltage distribution box and the battery system is set as the quick-plug connector, so that the high-voltage distribution box can be quickly plugged and unplugged during power failure, and the use is safer; the interface for connecting the high-voltage distribution box with the charging interface and the motor controller interface is set as the cable gland connector, so that the connection is firmer and more reliable, and the high-voltage distribution box can adapt to complex and changeable working conditions. The two connectors are used in a mixed mode, free combination in the space can be achieved, and the limitation of independent use of a quick-plug connector or a cable connector in the space is avoided.

The invention discloses a cold plate-based battery thermal management system and an operation control method thereof. The system comprises a plurality of battery units, two liquid cooling plates and a filling material, the battery units are vertically arranged between the two liquid cooling plates; and the filling material is embedded among the battery units. According to the operation control method, the temperature field of the battery unit is monitored in real time, and the flow direction of the cooling liquid in the liquid cooling plate is dynamically adjusted according to the temperature difference of the battery pack and the highest temperature monitoring result, so that more low-temperature cooling liquid can be guided to the area of the battery unit with higher temperature. Compared with traditional fixed-period reciprocating flow, the battery thermal management system based on the cold plate and the operation control method of the battery thermal management system achieve lower battery pack temperature difference and better battery pack temperature uniformity under the condition that the reversing times of cooling liquid are the same, so that the service life of the battery pack is prolonged, and the performance of the battery pack is improved; the method has the advantages of simple operation, good adaptability, low operation cost and good temperature control effect.

The invention relates to the field of photovoltaic technology, and discloses a back contact photovoltaic module and a preparation method thereof. The preparation method comprises the following steps: cutting a pre-crosslinked insulating adhesive film (the melting point of the pre-crosslinked insulating adhesive film is 60-80 DEG C, the pre-crosslinking degree is greater than or equal to 90%, and the insulation resistance is greater than or equal to 1.0 * 10 < 10 > omega.cm), laying the cut insulating adhesive film on the back surface of a back contact battery piece, and enabling the insulating adhesive film to cover each thin grid line on the back surface of the battery piece, main grid lines on the back surface of the battery piece and PAD points (welding points) on the main grid lines are exposed to isolate positive and negative grid lines on the back surface of the battery piece; pre-fixing the laid insulating adhesive film on the back surface of the battery piece, wherein the pre-fixing temperature is less than or equal to 80 DEG C; welding strips are laid on the main grid lines on the back face of the battery piece in the length direction of the main grid lines; and performing laser welding on the welding strips on the PAD points of the main grid lines, so that the plurality of battery pieces are welded by the welding strips and are connected in series to form a battery string. According to the preparation method, the back contact photovoltaic module with low cost and high yield can be obtained.

The invention discloses an all-solid-state lithium battery and a preparation method thereof, and belongs to the technical field of lithium ion batteries. The preparation method of the all-solid-state lithium battery comprises the following steps: S1, preparing a positive plate; s2, uniformly mixing a sulfide solid electrolyte and a binder to form an electrolyte-binder skeleton layer, and compounding the electrolyte-binder skeleton layer with the positive plate; s3, compounding the negative plate with the electrolyte-binder skeleton layer compounded with the positive plate, wherein the positive plate and the negative plate are respectively positioned on two sides of the electrolyte-binder skeleton layer; cutting and packaging into a dry battery cell; s4, uniformly mixing a lithium salt, a thermal initiator and a polymer monomer to form a polymer solid electrolyte precursor; and injecting the polymer solid electrolyte precursor into the dry cell, fully infiltrating, heating and curing to form the all-solid-state lithium battery. According to the preparation method disclosed by the invention, the mechanical strength and the electronic insulativity of the sulfide solid electrolyte are improved by an in-situ polymerization process, and the electrical property of the all-solid-state lithium battery is improved.

This item is a case for a dry cell battery.

The utility model discloses square cabin power supply equipment, which relates to the technical field of energy storage equipment and comprises a box body, a partition plate is arranged in the box body, the upper surface of the partition plate is fixedly connected with the bottom surfaces of a plurality of batteries, the interior of the box body is fixedly connected with the outer side of a fixed plate, and a control unit is arranged on the upper surface of the top of the box body. An opening and closing mechanism is arranged in the box body, and a floating mechanism used for being connected with the partition plate is arranged in the box body. The floating box has the advantages that the floating mechanism, the wireless communication module and the positioning module are arranged, so that the floating box can serve as a floating box body to play a role in lifesaving even in the flood process, rescue workers can be notified to tell the position through the communication module and the positioning module, and even if the box is washed away by water, the box can be used for lifesaving. The air bag in the floating mechanism can be controlled to be opened through a mobile phone APP, the product floats, meanwhile, the specific position can be checked through the APP, and searching is convenient.

The invention relates to a method for recycling and echelon utilization of an old lithium ion battery electrolyte and a lithium ion battery, and belongs to the technical field of electrolyte recycling, and the method comprises the following steps: step 1, carrying out discharge treatment on a retired and recycled old battery until the SOC is 0%; 2, disassembling the battery, and collecting electrolyte in the old battery by adopting a vacuum suction method; 3, the concentration of the lithium salt in the collected electrolyte is detected, and the lithium salt is supplemented to the target concentration; 4, detecting the moisture and acidity of the electrolyte after the lithium salt is supplemented, and adding a water-removing and acid-removing additive; and 5, detecting the moisture and acidity of the adjusted electrolyte again, and injecting the electrolyte into the dry battery core to be utilized in an echelon manner. According to the technical scheme, the process is simple and efficient, energy consumption is reduced, the bottlenecks of high energy consumption, incomplete repair and the like in the traditional technology are broken through, green and economical recovery and echelon utilization of the electrolyte are achieved, and a better scheme is provided for resource utilization of the waste battery electrolyte.

The invention discloses a device and a method for improving formation liquid loss, relates to the technical field of battery production equipment, and solves the problems of complicated structure, much liquid loss, inconvenience in operation and the like of the existing formation method and formation device, the device comprises a battery tray, a plurality of battery bodies are arranged on the battery tray, the battery tray is connected to a lifting table, and the lifting table is connected to a lifting platform. The upper part of the battery is connected with a plurality of corresponding independent liquid collecting devices, the liquid collecting devices are communicated with an internal cavity of the battery body and are used for collecting discharged liquid, the liquid collecting devices are connected to a negative pressure generating device, and the negative pressure generating device is used for introducing liquid in the cavity of the battery body into the liquid collecting devices through negative pressure; and a corresponding independent weighing device or liquid level sensing device is arranged below each independent liquid collecting device. According to the invention, corresponding batch formation work can be conveniently carried out, accurate and independent liquid loss amount calculation work can be carried out, liquid supplementing work can be conveniently carried out according to different battery liquid loss amounts, and the effect of improving the liquid loss amount is achieved.

The utility model relates to the technical field of solar cells, and discloses a solar cell string and a solar cell module, the solar cell string comprises a plurality of cells, the cells are provided with grid lines, and the grid lines are provided with pad points; the plurality of welding strips are used for connecting the battery pieces and enabling the battery pieces to be arranged in sequence; each welding strip is connected with the pad point, each welding strip is connected with the battery piece and / or the grid line through a pre-fixing point, and the pre-fixing point is a non-UV glue point. According to the solar cell string, each welding strip is connected with the cell piece and / or the grid line through the pre-fixing points, a good pre-fixing effect is achieved on each welding strip, arrangement of UV glue and curing operation of the UV glue are avoided, working procedures are reduced, meanwhile, cost is reduced, and the solar cell string is good in reliability and stable in performance.

A method for forming a shaped battery can include: adding electrolyte to a dry battery cell, shaping the battery cell, relieving stress and / or strain from the battery cell, curing the electrolyte, and / or injection moulding a thermoplastic or thermoset around the battery cell. A battery cell can include a cathode, an anode, a separator disposed between the cathode and the anode, a gel polymer electrolyte, an overmoulded housing surrounding the cathode, the anode, the separator, and the gel polymer electrolyte, where the battery cell comprises a non-zero radius of curvature about at least 1 axis.

The invention relates to the technical field of networking type energy storage systems, and discloses a series battery equalization circuit suitable for networking type energy storage, an equalization method and application, the series battery equalization circuit comprises a symmetrical equalization module and a conversion module, the conversion module is connected with a battery pack formed by connecting a plurality of batteries in series and the symmetrical equalization module, and the conversion module is connected with the symmetrical equalization module. The conversion module is used for converting direct current output by the battery pack into alternating current and inputting the alternating current into the symmetrical equalization module; and the symmetrical equalization module is used for realizing voltage equalization of each battery in the battery pack in a symmetrical equalization mode according to the alternating current characteristics of the alternating current. According to the invention, the symmetrically designed equalization modules are adopted, the circuit structure is simplified, the equalization efficiency is ensured, and the method is suitable for large-scale application of a network-forming type energy storage system.

The utility model relates to a cell string and a photovoltaic assembly, comprising a plurality of cell sheets and a solder strip connecting adjacent cell sheets in series, the solder strip has a bottom and two opposite side portions, the two opposite side portions of the solder strip and the surfaces of the cell sheets are fixed through adhesive glue, and the bottom of the solder strip is provided with a bottom surface. The bottom and the surface of the battery piece are attached in a surface contact mode or a line contact mode, and no adhesive is arranged between the bottom and the surface of the battery piece. According to the fixing mode between the welding strip and the battery piece of the battery string, the bonding glue is arranged between the two side parts of the welding strip and the battery piece, and the welding strip is fixed on the battery piece from the side surface, so that the problem of insufficient welding caused by the fact that the bonding glue enters the bottom of the welding strip can be avoided.

The utility model discloses a dry battery electrolyte purification device which comprises a spray tower, a cyclone port is arranged at the top of the spray tower and is used for introducing alkaline gas and enabling the alkaline gas to spirally fall down, and a spray assembly is arranged in the spray tower; the spraying assembly comprises a liquid inlet pipe rotationally connected to the top end of the spraying tower, an annular pipe is arranged below the liquid inlet pipe, and a plurality of atomizing nozzles are arranged on the annular pipe at equal angles; the device overcomes the defects in the prior art, is reasonable in design, enables the reaction to be more thorough through the contact time of alkaline gas and acid solution, and has higher social use value and application prospect.

The present invention discloses a battery temperature control ring, a battery axial temperature uniformity control device and a battery structure, wherein the battery temperature control ring comprises an inner ring and an outer ring with insulation and heat conduction functions, the inner ring is used to be sleeved at a certain position on the outer peripheral surface of the battery, and an annular accommodating space is formed between the inner ring and the outer ring, and a plurality of P-type semiconductor components and N-type semiconductor components that can be used as semiconductor refrigeration materials are arranged side by side in the accommodating space; a current path is formed between the P-type semiconductor components and the N-type semiconductor components to transfer heat between the inner ring and the outer ring; a temperature control sleeve assembly composed of a plurality of battery temperature control rings is sleeved on the outer peripheral surface of the battery, and the heat dissipation power of the battery control ring at each position can be adjusted according to the difference in heat generation power of the battery from the middle to the two ends, so that the temperature of each position of the outer peripheral surface of the battery along the axial direction is the same, thereby improving the uniformity of the battery working environment and increasing the service life.

The invention discloses a high-safety battery pack which comprises a shell and a plurality of batteries, an upper cover plate is arranged at the upper end of the shell, a lower cover plate is arranged at the lower end of the shell, the interior of the shell is divided into a plurality of mutually independent battery chambers through partition plates, the batteries are placed in the battery chambers respectively, a supporting plate is arranged in the lower end of each battery chamber, and a plurality of pre-opening areas are arranged on the lower cover plate. The periphery of the pre-opening area is provided with a thinning groove. According to the high-safety battery pack disclosed by the invention, the pre-opening area can quickly and accurately release thermal runaway gas, so that shell damage and fire spreading are avoided; the conical supporting column gives consideration to supporting, heat dissipation and buffering, and not only guides airflow but also prevents the battery from expanding and cracking; the silicon-based damping paste realizes damping and heat dissipation, and can be cured and insulate heat at high temperature; the independent battery chamber and the cooling fins optimize heat dissipation, the problems of thermal runaway, unbalanced heat dissipation and shock absorption, insufficient fire prevention and the like of a traditional battery pack are effectively solved, the service life of the battery is prolonged, and the application safety is improved.

The present invention discloses a dew condensation prevention system for a battery compartment of an integrated bus roof and a control method thereof, which relates to the technical field of electric buses. It includes a battery compartment integrally arranged on the bus roof, and a plurality of battery modules are arranged at intervals in the battery compartment; the battery compartment is provided with an air inlet and an air outlet, and a first one-way valve and a second one-way valve are respectively arranged at the air inlet and the air outlet; the dew condensation prevention system includes an air pump, a dryer and a vehicle control module arranged outside the battery compartment; the vehicle control module is controllably connected to the air pump; the air pump is sequentially connected to the dryer and the first one-way valve through a ventilation circuit. During operation, if the air humidity in the battery compartment is relatively high, dry air can be regularly injected into the battery compartment through the air pump and the dryer, so that the moist air is discharged to the outside of the vehicle through the second one-way valve from the air outlet, thereby ensuring that the air in the battery compartment remains dry and preventing dew condensation from occurring when the temperature difference between the inside and outside of the compartment is relatively large, effectively overcoming the problems existing in the prior art.