236results about "Primary cell maintainance/servicing" patented technology

The invention discloses a high mass specific energy power primary battery and electric equipment, and relates to the technical field of batteries. Comprising a cover group, a shell, a positive pole piece, a diaphragm, a negative pole piece, a thermistor, an electrolyte, a bottom cover plate and a hole plugging piece, the shell is of a hollow cylindrical structure with two open ends and is covered by the cover set and the bottom cover plate to form a containing cavity. A collector plate and a pole are made of a high-conductivity metal material, and the pole and a cover group body are hermetically connected through a glass body; the negative pole piece is provided with a supporting structure, each of the positive pole piece and the negative pole piece is provided with at least one pole lug, the positive pole piece or the negative pole piece is coated with a diaphragm of a coating layer and placed in the accommodating cavity, the negative pole lug is connected with a bottom cover plate, the positive pole lug is connected with one end of a thermistor, the other end of the thermistor is connected with a collector plate, and electrolyte is injected to prepare the battery. The problems of continuous current output of more than 5C, use in an environment of-55 DEG C to 125 DEG C, overload impact of gravitational acceleration of more than 10 times, impact of environment temperature, storage for more than 10 years and the like of a primary battery are solved.

Systems and methods are provided for testing and / or validating anti-propagation systems designed to mitigate a thermal runaway condition in lithium-ion batteries. A system comprises a first temperature sensor for detecting a temperature of a trigger battery cell within the battery module and a heater removably couplable to a substantially central portion of the trigger cell and configured to heat the trigger cell to a threshold temperature. The system further comprises a second temperature sensor for detecting a temperature of a test battery cell adjacent to the trigger cell within the battery module. The trigger cell undergoes a thermal runaway condition upon reaching the threshold temperature. The system may further comprise a controller for controlling the rate of heating of the trigger cell. The system ensures that the trigger cell will breach via the pressure release valve or cell vent after reaching the threshold temperature.

The invention provides a double-layer double-high type electrode, a reserve lithium battery and a preparation method thereof, the double-layer double-high type electrode comprises a current collector, a first active layer and a second active layer, the first active layer is located between the current collector and the second active layer, the first active layer contains an energy type active material, and the second active layer contains an energy type active material. The second active layer contains a pre-charged power type active material, and the open-circuit voltage difference between the energy type active material and the pre-charged power type active material is less than or equal to 0.5 V. The invention provides the double-layer double-high type electrode for the reserve lithium battery, which is quick in activation, high in energy density and good in rate capability, an efficient conductive network is constructed, and the discharge performance of the battery is improved; the porosity of the second material layer is regulated to be greater than that of the first material layer, and the seepage flow guide grooves are dug in the surface of the second material layer, so that the electrolyte infiltration rate of the electrode is improved, and the activation time is shortened.

The utility model relates to the technical field of batteries, and provides an immersed liquid cooling box and a battery pack. The immersed liquid cooling box comprises a box body. The box body is provided with an immersion cavity configured to place a battery cell. And the immersion cavity is provided with a liquid inlet and a liquid outlet in the outer surface of the box body. The liquid inlet and the liquid outlet are located in the two opposite sides of the box body in the width direction respectively. Therefore, the flow path of the immersion liquid can be shortened, the temperature difference between the battery cells is reduced, and the service life of the battery is prolonged.

The present invention relates to the field of electronic cigarette battery processing, and in particular to a shaping tool for the production of electronic cigarette lithium batteries. The technical problem is: in the prior art, the shaping process of electronic cigarette batteries is easily deformed by clamping, and it takes a lot of time, with poor applicability, and it is also easy to over-shape the electronic cigarette batteries. The technical solution is: a shaping tool for the production of electronic cigarette lithium batteries, including a base and a support table, etc.; the base is fixed with a support table. The present invention can quickly complete the reversal of the lithium battery body by clamping the lithium battery body through the contact piece to rotate, which greatly saves time, and cooperates with the shaping roller to cling to the arc surface of the lithium battery body to perform flexible shaping on the lithium battery body, reduce the wear of the lithium battery body, avoid excessive shaping of the lithium battery body, and improve the shaping efficiency. In addition, the elastic telescopic part I provides elastic force, so that the tool can effectively adapt to the shaping of multiple lithium battery bodies of different sizes while ensuring the safety of the lithium battery body, and has strong applicability.

The utility model relates to the technical field of battery manufacturing, and provides a battery cell heating device and battery cell production equipment, the battery cell heating device comprises a mounting frame with two mounting seats, a battery cell jig and at least two groups of heating components, each group of heating components comprises two coil components, the coil components can form a magnetic circuit to carry out electromagnetic heating on a battery cell, and the coil components are arranged on the mounting frame. Different groups of heating assemblies can form heating areas with different sizes; one of the two coil assemblies of the same group of heating assemblies is connected to one of the mounting seats, and the other one of the two coil assemblies of the same group of heating assemblies is connected to the other mounting seat, so that the multi-station battery cell heating device is realized, and a battery cell can be placed at one group of heating assemblies with a proper heating area for heating according to the size of the battery cell during heating; and during model changing, the battery cell can be selectively placed at a proper heating assembly for heating according to the size of the battery cell to be heated, so that the compatibility of the battery cell heating device to the battery cells with different sizes is improved.

The utility model provides an energy storage type thermal battery activation circuit which comprises a power supply module, a super capacitor C2 and a switch module which are connected in sequence, and the switch module and the super capacitor C2 are respectively connected with a control module. The power supply module is used for charging the super capacitor C2, the control module is used for controlling the switch module to be closed after the voltage at the two ends of the super capacitor C2 reaches a set threshold value, and activation current output by the super capacitor C2 is output to the igniter through the switch module to activate the thermal battery. According to the utility model, the super capacitor C2 is charged and stored in advance through the power supply module, and then the super capacitor C2 is instantly discharged to provide energy required by activation of the thermal battery, so that activation of the thermal battery is realized, the power of the power supply module can be greatly reduced, and the volume and the mass of the thermal battery activation device can be reduced; and the device is suitable for carriers with requirements on installation space or overall quality.

The present disclosure provides a charge control circuit, a charging device and a charging system. The charge control circuit comprises a power input end, a power output end, a switch unit, a control unit and a detection unit, wherein rechargeable batteries comprise a first rechargeable battery and a second rechargeable battery; the power output end comprises a first power output end and a second power output end; the switch unit comprises a first switch and a second switch; a voltage adjustment circuit is connected between the first switch and the first power output end; and when the detection unit detects that the rated voltages of the rechargeable batteries are not the same, the control unit controls the second switch to be closed and the second rechargeable battery is charged, and at the same time the control unit controls the first switch to be closed and activates the voltage adjustment circuit.

A thermal management method of a battery wherein the battery comprises at least one cell, and wherein a heating device is configured to heat the battery in response to a heating instruction. The method comprises the following steps: determining the charge state of the battery cell and the battery cell current of the battery cell; a first value of a first parameter of the heating device; a reference cell temperature of the cell; the maximum battery cell temperature and the minimum battery cell temperature of the battery cell are obtained. Under the condition that the maximum battery cell temperature is lower than a first threshold temperature; the minimum cell temperature of the cell is lower than a second threshold temperature; the charge state of the battery cell is higher than a charge state threshold value; the method also includes instructing a heating device to heat the electrical core.

The present invention relates to the technical field of health management of lithium primary batteries, and proposes a health management method and system for lithium primary batteries, including: connecting the health management system with the managed lithium primary battery pack through a detection cable assembly, connecting the positive and negative terminals of the battery module, and setting working parameters; collecting open circuit voltage data, and generating an alarm signal when the open circuit voltage is lower than a preset threshold; collecting load voltage data, and activating the battery when the load voltage does not meet the preset requirements; collecting temperature and humidity data of the battery pack, and generating an alarm signal when the temperature or humidity exceeds a preset threshold; monitoring the gas concentration in the box of the battery pack, and generating an alarm signal when the gas concentration exceeds the preset threshold; collecting parameter data of the battery pack, storing and analyzing the parameter data, and outputting it; when an abnormality is detected during the monitoring process, generating abnormal data information, and sending it to a display device for display. The present invention improves the safety and use efficiency of lithium primary batteries.

The invention provides a special BMS (Battery Management System) management system for a lithium fluorocarbon primary battery, which comprises a BMU main control board and 60 LMU control boards, the BMU main control board and the LMU control boards are arranged in a plastic shell on the side wall of the battery, and the LMU control boards are dispersed on the two sides of the battery, are connected with each string of battery cells of each branch by using acquisition cables, and are connected with a temperature monitoring sensor at the same time; the BMU main control board is arranged in the plastic shell right in front of the battery, the plastic shell is provided with an output plug-in, the output plug-in is welded and fixed with a PCB (printed circuit board) of the BMU main control board, power is supplied to an external load through the plug-in, the BMU main control board is connected with a communication line and transmits data to an upper computer regularly, and the BMU main control board is connected with the LMU control board through a daisy chain communication interface; the system has the advantages of ultra-low power consumption, high power output, high real-time performance, stable topological structure and the like, and meets the performance requirements.

An embodiment of the present application provides a surface density device calibration apparatus and a surface density device calibration method, which relate to the field of battery detection devices. The surface density device calibration apparatus is used to calibrate a surface density detection device, and the surface density device calibration apparatus includes a mounting frame, a standard part, and an adjusting part. The mounting frame is used to be mounted on the surface density device. The standard part includes a plurality of standard areas with different densities. The adjusting part is connected to the standard part and the mounting frame, and the adjusting part is configured to adjust the positions of the plurality of standard areas so that the plurality of standard areas are successively moved to the detection station of the surface density device. By using the standard part to calibrate the surface density device instead of the pole piece, the time consumed for manufacturing the pole piece is saved, and the efficiency of calibrating the surface density device is improved.

The invention discloses a bent-pipe-shaped thermal battery and an assembly method thereof, and belongs to the technical field of thermal batteries, the bent-pipe-shaped thermal battery comprises a battery cover, a battery shell bottom, a bent pipe shell and a special-shaped battery stack in the bent pipe shell, and is characterized in that the battery shell bottom and the bent pipe shell are welded into a whole, and a flexible insulation thermal insulation layer is assembled between the special-shaped battery stack and the bent pipe shell; an electric connection assembly, an igniter, a heat insulation pad and an ignition assembly are arranged outside the electric pile, the electric pile is formed by connecting single batteries in series and in parallel, and each single battery is formed by laying powder on a negative electrode, an electrolyte, a positive electrode and a heating medicine layer by layer in a one-time pressing mode. By the adoption of the technical scheme, the bent-pipe-shaped thermal battery can be matched with the inner cavity space of a weapon system, the proportion of active substances is increased on the premise that the space is limited, and the space utilization rate is increased.

The utility model discloses a flame-retardant lithium battery which comprises an explosion-proof outer shell and a lithium battery core body, the lithium battery core body is arranged in the inner space of the explosion-proof outer shell, a heat dissipation layer is wrapped outside the lithium battery core body, a flame-retardant belt is wrapped on the surface of one side, far away from the lithium battery core body, of the heat dissipation layer, and the flame-retardant belt is arranged in a multi-layer flame-retardant composite mode. The surface of one side, far away from the heat dissipation layer, of the flame-retardant belt is wrapped with a heat insulation layer, the surface of one side, far away from the flame-retardant belt, of the heat insulation layer is connected with the inner wall of the explosion-proof outer shell, the top of the explosion-proof outer shell is provided with a top cover through an assembly mechanism, the top of the lithium battery core is provided with a positive pole through a positive electrode plate, and the upper end of the positive pole is arranged at the top of the top cover. By arranging a series of structures, good heat dissipation, flame retardance and heat insulation performance are achieved, the flame retardant belts are composited in a multi-layer mode, the flame retardant belts not only have good flame retardance, but also are high in viscosity, the supporting structure strength and the tensile strength are high, and the explosion-proof outer shell and the top cover are assembled in an anti-seepage and sealed mode.

Cooling circuit for a battery for an electric or plug-in hybrid motor vehicle. Cooling circuit (1) comprising a plurality of branches (C1, C2, C3, C4, C5, C6) arranged in parallel, and comprising respectively: - a first fitting (6), - an inlet port (7), - an outlet port (9), and - a second fitting (10), the circuit being characterized in that for each of the branches (C1, C2, C3, C4, C5, C6): - the first fitting (6) and / or the inlet port (7), and / or - the second fitting (10) and / or the outlet port (9) has a cavity so as to delimit a housing configured to accommodate an intermediate nozzle element (11) having a passage cross-section (S) configured to calibrate the flow rate of the heat transfer fluid, the passage cross-section (S) of the intermediate nozzle element (11) being specific to each branch (C1, C2, C3, C4, C6 ... C5, C6). Figure for the abridged version: Fig. 9

One or more microtransponders may be attached to at least a component of or location in a battery cell and may be configured to provide digital information to a reader, thereby enabling the reader to authenticate the battery cell.

The invention relates to an energy supply mechanism and an underground alarm, and the energy supply mechanism comprises a base body, a thermal battery assembly, and an excitation assembly. The thermal battery assembly is arranged in the base body; the induction structure and the triggering structure of the excitation assembly have a locking state and a triggering state, in the triggering state, the induction structure unlocks the triggering structure, and the triggering structure supplies energy to the thermal battery assembly so as to activate the thermal battery assembly to provide electric energy outwards. The triggering condition information is adapted through the arrangement of the sensing structure, and then the thermal battery assembly is activated through the triggering state to provide electric energy, so that the arrangement of laying a cable for connecting a circuit underground is avoided, and the arrangement of the thermal battery assembly provides a long-term and stable energy supply demand, and meets the demand of underground environment monitoring. The problems that in the prior art, an underground alarm needs cable laying for power supply, the cable laying process is complex, and the alarm fails due to line aging and the like are effectively solved.

The utility model relates to the technical field of new energy batteries, in particular to a shell and a battery module. The shell comprises a bottom plate, two first cross beams, two second cross beams and at least one liquid cooling plate, and each first cross beam is connected to the bottom plate and provided with a first flow channel; each second cross beam is connected to the bottom plate; one end of each second cross beam is connected to one side of one second cross beam, and the other end of each second cross beam is connected to one side of the other cross beam; two ends of the liquid cooling plate are respectively connected to the two first cross beams; the liquid cooling plate is provided with at least one second flow channel; wherein the bottom plate, the two first cross beams and the two second cross beams define a containing cavity; the liquid cooling plate is arranged in the containing cavity, and the two first flow channels communicate with the second flow channel. The shell has the advantages of being simple in structure, convenient to install and low in cost.

A testing device (100) and an energy storage system. The testing device comprises a main body (10), a testing assembly (20), and a pressure regulating assembly (30); an accommodating cavity (11) for accommodating batteries is formed inside the main body; the testing assembly is arranged in the accommodating cavity and is used for performing a self-discharge screening test on the batteries; and the pressure regulating assembly is arranged on the main body and is used for regulating the pressure in the accommodating cavity. The testing device can achieve the storage and transportation of batteries, and efficiently utilize transportation time to perform a self-discharge screening test on the batteries, thereby effectively shortening the production period of the batteries; in addition, there is sufficient time for the self-discharge screening test in a transportation process, so that the testing result can be more accurate.

The invention provides a battery type identification circuit and device.The battery type identification circuit is electrically connected with a battery to be detected and comprises a power supply module, an output control module, a PWM charging control module and an MCU main control unit, the first end of the power supply module is electrically connected with a first pin of the MCU main control unit, and the second end of the power supply module is electrically connected with a second pin of the MCU main control unit; the second end of the power supply module is electrically connected with the first end of the output control module; the second end of the output control module is electrically connected with the first end of the PWM charging control module, and the third end of the output control module is electrically connected with the second pin of the MCU main control unit; the second end of the PWM charging control module is electrically connected with the third pin of the MCU main control unit, the third end of the PWM charging control module is electrically connected with the fourth pin of the MCU main control unit, and the fourth end of the PWM charging control module is electrically connected with the first end of the battery to be tested. Therefore, the accuracy of battery type identification is improved.

A detection apparatus (10) and a target detection and repair system are provided. The detection apparatus (10) includes: a conductive film (11) having N film regions (111), where the conductive film (11) is used to fit with an insulating layer (32) of a target, and the target includes a metal layer (31), the insulating layer (32) covering the metal layer (31); a signal generator (12) configured to transmit a first electromagnetic signal (01) to the conductive film (11); and a signal receiver (13) including N collecting units (131), where the n-th film region (111) corresponds to the n-th collecting unit (131), and the signal receiver (13) is configured to obtain the n-th collecting signal. The collecting signal is used to determine whether there is a predetermined defect (33) in a region of the insulating layer (32) covered by the n-th film region (111); and position information of the n-th film region (111) is used to determine position information of the predetermined defect (33) on the insulating layer (32).

The invention relates to a retractable positioning mandrel which solves the problems that resistance is increased in the moving and picking process of a flow choking ring and the risk of breakage of the flow choking ring exists in an existing device. The device is mainly divided into two parts, wherein one part is a power component consisting of a cylinder bracket (1), a needle-shaped cylinder (2) and a cylinder contact (16); according to the other part, a mandrel body is composed of a base (3), a spring steel wire (4), a connecting stand column (5), a set screw I (6), a limiting disc (7), an outer expansion push piece (8), a screw I (9), an expansion base (10), a conical expansion core (11), a set screw II (12), a screw II (13), a contraction tension spring (14) and a push rod (15). The cylindrical cage-shaped structure formed by the spring steel wires evenly distributed around the circumference is adopted to replace an integral positioning mandrel to serve as a positioning piece of the choke ring, the contact area between the positioning piece and a workpiece can be greatly reduced, resistance during relative movement is reduced, and the reliability of automatic picking of the choke ring can be better improved.

The utility model discloses a heat dissipation shell for packaging a thermal battery, relates to the technical field of thermal batteries, and aims to solve the technical problem that the use stability of the thermal battery is influenced due to the fact that the thermal battery runs in a high-temperature environment after being activated because excessive heat is generally generated after a heating medicament is ignited by an electric ignition head or a firing pin mechanism. Comprising a sealing shell, a shell assembly is fixedly installed outside the sealing shell, the shell assembly comprises an outer shell fixedly arranged outside the sealing shell in a sleeving mode, a heat dissipation shell is arranged outside the outer shell in a sleeving mode, and a heat dissipation assembly used for conducting and dissipating heat in the sealing shell is arranged between the heat dissipation shell and the outer shell. The heat dissipation assembly comprises arc-shaped heat dissipation fins which are symmetrically arranged in an X shape in a crossed mode, the ends of the arc-shaped heat dissipation fins are fixedly connected to the outer edge face of the outer shell, and the ends, away from the outer shell, of the arc-shaped heat dissipation fins are fixedly connected to the inner edge face of the heat dissipation shell. The thermal battery has the advantage of radiating heat in the excitation process of the thermal battery.

The utility model discloses a thermal battery activation control tool which comprises an air cylinder mounting plate, an upper mounting plate, a bottom plate and an activation assembly, a pressure reducing valve, an electromagnetic valve and an air cylinder are arranged on the air cylinder mounting plate, the air cylinder mounting plate is connected with the upper mounting plate through a screw rod, the upper mounting plate is connected with the bottom plate through a supporting rod, and the bottom plate is connected with the activation assembly. The activation assembly is arranged on the thermal battery, and the upper mounting plate is connected with the thermal battery. The air pressure is adjusted through the pressure reducing valve, air flows to the electromagnetic valve from the air pipe, the electromagnetic valve is remotely controlled to change the air flow channel so as to control stretching and retracting of the air cylinder, the drawing ring is installed on the air cylinder, the drawing ring is connected with the plug pin through the drawing line, and the plug pin is pulled out and is not limited by the plug pin due to movement of the air cylinder. And the activation rod impacts the thermal battery primer under the guide of the sliding chute and the action of the spring to complete battery activation. And an operator can remotely control the tool, so that the safety of the activation process is ensured.

The invention relates to the technical field of intelligent door lock power supply management, and discloses an intelligent door lock dry battery low temperature early warning method and system, an intelligent door lock and a storage medium, the method comprises the following steps: obtaining an NTC partial voltage value and a fixed resistance value, and calculating according to the NTC partial voltage value and the fixed resistance value to obtain a target battery environment temperature; acquiring a battery basic voltage and a safety coefficient, and if the target battery environment temperature accords with a preset temperature interval, performing compensation calculation on the target battery environment temperature according to the battery basic voltage, the safety coefficient and the preset temperature interval to obtain an alarm threshold voltage; and obtaining the current power supply voltage, and if the current power supply voltage is smaller than the alarm threshold voltage, triggering overvoltage early warning and prompting the user to carry the mechanical key to go out. The target battery environment temperature is obtained, the alarm threshold value is calculated according to the target battery environment temperature, and whether the current voltage is too low or not is detected according to the alarm threshold value so as to prompt a user to carry a mechanical key to go out.

To provide a battery holder device and a device module that are capable of easily removing a lithium chloride film with a simple circuit configuration.SOLUTION: A battery holder device 12 comprises a battery holder 21 and a discharge circuit 24. The battery holder 21 accepts a battery 17 and comprises a positive electrode contact part 31 and a negative electrode contact part 32. According to the battery holder 21, the positive electrode contact part 31 and the negative electrode contact part 32 are connected to an operation object circuit device 14 to be operated by the battery 17. A discharge circuit 24 comprises a discharge resistance 22 that discharges the battery 17 loaded into the discharge circuit 24 to flow a discharge current, and a fuse connected to the discharge resistance 22 in series, with the discharge circuit 24 connected between the positive electrode contact part 31 and the negative electrode contact part 32. The fuse is melted in a case where a discharge current determined by the discharge resistance 22 flows for a predetermined time when an output voltage of the battery 17 is substantially a standard voltage.SELECTED DRAWING: Figure 3

The utility model belongs to the technical field of batteries, and discloses a battery system which comprises a battery core stacking body, an end plate, an acquisition unit and a battery management unit, the end plate is arranged on the end surface of the battery cell stacking body; the acquisition unit comprises an acquisition module and a flexible circuit board, the acquisition module is used for acquiring parameter information of the cell stack, the flexible circuit board is electrically connected with the acquisition module, and a plug-in connector of the flexible circuit board is arranged on the end plate; the battery management unit comprises a slave control module arranged on the end plate, and the slave control module is electrically connected with the plug-in connector. According to the utility model, the connector of the flexible circuit board and the slave control module are integrated on the end plate of the battery cell stack body, so that the strength of the end plate is enhanced, and meanwhile, the connector of the flexible circuit board and the slave control module are directly and electrically connected without reserving a space for connecting and plugging a wire harness in the prior art, so that the Y-axis space utilization rate of the battery system is improved, and the cost is reduced. Moreover, the technological process of wiring harness plugging is reduced, and the overall wiring harness cost is reduced.

The utility model discloses a battery which comprises a battery cell body, a top sealing edge, a protection switch element and a bonding piece, the top sealing edge is arranged at the top of the battery cell body, the protection switch element is arranged on the top sealing edge, and a temperature sensing part is arranged on one side, facing the top sealing edge, of the protection switch element; the bonding piece is located between the top sealing edge and the protection switch element, the bonding piece comprises a base material layer and a first adhesive layer which are arranged in a stacked mode, and the first adhesive layer is located on the side, facing the top sealing edge, of the base material layer; in the width direction of the top sealing edge, the first adhesive layer is not higher than the top sealing edge, and the base material layer is not lower than the temperature sensing piece. According to the invention, the battery cell top sealing edge can be narrowed to improve the energy density of the battery, and the problems of short circuit and battery cell corrosion caused by contact of the exposed temperature sensing part of the protection switch element with the battery cell can be avoided.

The battery pack safety protection device comprises a battery box and a cover plate, an L-shaped heat conduction plate is installed at the bottom of the battery box, penetrating openings are formed in the two ends of the L-shaped heat conduction plate, second heat conduction plates are inserted into the penetrating openings, a limiting frame is fixed to the other side face of the L-shaped heat conduction plate, and the limiting frame is fixed to the bottom of the battery box. A first heat conducting plate is inserted into the limiting frame, the second heat conducting plate and the first heat conducting plate both penetrate through the top of the cover plate, a heat conducting piece is fixed to the top of the L-shaped heat conducting plate, a through groove matched with the heat conducting piece is formed in the position, corresponding to the heat conducting piece, of the top of the cover plate, and the heat conducting piece is fixed in the through groove; a second barrier strip is fixed to the top of the outer wall of the second heat conduction plate, and a second adaptive hole allowing the second heat conduction plate and the second barrier strip to penetrate through is formed in the top of the cover plate. According to the utility model, the battery pack is convenient to take and place and heat conduction is facilitated.