28 results about "Cell fixing" patented technology

A cell fixing apparatus includes a first shell element, a second shell element, and a plurality of pressure-adding beams. The first shell element and the second shell element are relatively fixedly connected, the first shell element and the second shell element are disposed at intervals in a first direction, so that an accommodating cavity is provided between the first shell element and the second shell element, and the accommodating cavity is configured to accommodate the cell. The plurality of pressure-adding beams may be disposed on a surface of the first shell element that is away from the second shell element. The plurality of pressure-adding beams may include a first-type beam and a second-type beam. A size of the first-type beam in the first direction is greater than that of the second-type beam. The pressure-adding beams are used to limit deformation of the cell in the accommodating cavity.

The invention discloses a power battery module for a new energy electric vehicle and a cooling control method of the power battery module. The plurality of battery cell fixing positions are respectively arranged on the battery cell lower pressing plate at equal intervals in an array manner along the transverse direction and the longitudinal direction; one end of each battery cell is arranged on the corresponding battery cell fixing position in a matched manner; the water channel mechanism is arranged in a hole between two adjacent rows of battery cells and is in close contact with the battery cells, and the water channel is distributed in an S shape among the plurality of battery cells; the two connecting ports are respectively arranged at the two ends of the water channel in a communicating manner; and the battery cell upper pressing plate is arranged at the tops of the plurality of battery cells in a matching manner. The plurality of battery cells are integrated together, and the temperature of the battery cells is adjusted through the water channel mechanism, so that the problem of non-uniform local heat dissipation of the battery module is solved. The invention further discloses a cooling control method for the power battery module of the new energy electric vehicle.

The application provides an electric cell fixing mechanism, a first boss assembly is formed with a first heat dissipation gap, a first insertion hole and a second insertion hole, a second boss assembly is formed with a second heat dissipation gap, a first insertion channel and a second insertion channel, a second base is formed with a plurality of second cell mounting grooves on a side close to the second boss assembly; each first cell mounting groove and the corresponding second cell mounting groove are used for mounting and fixing two ends of an electric cell monomer; the first heat dissipation gap and the second heat dissipation gap are communicated to form a heat dissipation channel, the first insertion hole is communicated with the first insertion channel, and the second insertion hole is communicated with the second insertion channel; a fixing assembly is formed with a mounting gap, the fixing assembly is sequentially arranged in the first insertion hole and the first insertion channel, the fixing assembly is sequentially arranged in the second insertion hole and the second insertion channel, and two ends of the fixing assembly are connected to the first base and the second base respectively. The electric cell fixing mechanism can improve the heat dissipation effect of the electric cell.

The invention relates to the technical field of battery pack manufacturing, and discloses an automobile battery pack adopting an anti-offset battery cell fixing structure, the automobile battery pack comprises a battery module and a constraint piece, the constraint piece comprises a pressing group arranged above a connecting piece, a buffer plate is arranged in the middle of the top end of the pressing group, the buffer plate adopts a waveform design, and the buffer plate is arranged in the middle of the top end of the pressing group. A cover plate is arranged at the top end of the buffer plate, springs are symmetrically arranged at the four corners of the bottom end of the cover plate, and the bottom ends of the springs are elastically connected with the four corners of the top end of the pressing set. According to the device, the reinforcing plate and the downward pressing set are arranged, the reinforcing plate is in sliding connection with the downward pressing set, and the abutting rod is in transmission connection with the positioning plate, so that the reinforcing plate and the side plate can be driven to reinforce the side frame while the restraining piece is installed in place, and one-time assembly and double guarantee are achieved; omnibearing constraint is formed on the battery cell from two dimensions of the top end and the side edge, and the deviation risk possibly caused by single-dimension constraint is completely eradicated.

The invention discloses a concentrating cell module and a preparation method thereof, and the concentrating cell module comprises a concentrating gallium arsenide solar cell, a buffer layer, a first silver-gold plating layer, a front copper foil, a substrate, a back copper foil, a nickel plating layer, a palladium plating layer and a gold plating layer, and the front copper foil and the back copper foil are respectively arranged on the front side and the back side of the substrate. A nickel plating layer, a palladium plating layer and a gold plating layer are sequentially plated on the back face of the back copper foil, a first silver-gold plating layer is plated on the front face of the front copper foil, a cell fixing area is preset on the front face of the front copper foil, a buffer layer is plated on the back face of the light-gathering gallium arsenide solar cell, and the buffer layer is a second silver-gold plating layer or a gold-tin plating layer. The light-gathering gallium arsenide solar cell is placed in the cell fixing area, the positive electrode of the light-gathering gallium arsenide solar cell is connected with the positive electrode of the front copper foil, and the negative electrode of the light-gathering gallium arsenide solar cell and the negative electrode of the front copper foil are conducted through resistance welding. According to the invention, the problem of poor heat dissipation performance of the light-condensing gallium arsenide solar cell in high-power light-condensing application can be effectively solved.

A battery pack according to an embodiment of this invention may comprise: a plurality of battery cells including electrode terminals on one side of a case; a cell fixing plate to which the plurality of battery cells are coupled; and a busbar assembly electrically connected to the plurality of battery cells, wherein the cell fixing plate may be arranged under the plurality of battery cells, and the busbar assembly may be arranged under the cell fixing plate.

The utility model discloses a kind of multilayer electric core fixing structure for stacked battery unit, including box, its inside is provided with the accommodating cavity of one end opening, at least one electric core support is arranged in box, batten is respectively detachably connected with box and electric core support, at least one bolt is threaded at least one electric core support, and detachably connected with batten, handle and batten are detachably connected;The utility model is through the detachable connection of batten and electric core support by bolt, handle and batten are detachably connected, so that handle, batten and electric core support become a whole, when the voltage and capacity of battery unit need to be increased, only need to increase the number of electric core support, the length of screw rod and the height of box accordingly, so that each battery unit can accommodate more electric core, and by box form a whole, reduce the number of stacked layers, improve battery pack overall stability and stacking reliability, facilitate assembly and disassembly, facilitate post-period electric core maintenance.

The application provides a fuel cell test bench simulating position bias, comprising a fuel cell performance detection system and a position bias simulation system, the position bias simulation system comprising a cell fixing device and a position control subsystem, the cell fixing device being electrically connected with the position control subsystem, the cell fixing device being used for installing a measured cell, and the fuel cell performance detection system being connected with the measured cell, the application combines the position bias simulation system with the fuel cell performance detection system, realizes flexible adjustment of the measured cell on a position angle in a test process, tests the running state of the cell under different angles, simulates the real working state of the cell, solves the single test state of the cell in the prior art, realizes research on the condition of the fuel cell stack when running under the working condition of a vehicle under the condition that the position of the cell is continuously changed on line, and realizes performance test of the measured cell under the full position state.

The invention discloses a rack assembly of a solid-state lithium battery cell narrow glue pasting machine. The rack assembly comprises a base plate, side plates, a rack, foot cups, moving wheels, a bottom sealing plate, an electric inlet mounting plate, an air pipe electric appliance mounting plate, a compressed air inlet, a vacuum inlet, a wire inlet, an air source, a lower electric box and a lower support assembly. And the cell fixing clamp is fixed on the substrate. The rack assembly achieves pneumatic control over the clamp pressing claw and the upper cover plate grabbing mechanism through an integrated pneumatic driving system. An air source and an air pipe electric appliance mounting plate are fixed on the rack to provide stable compressed air and vacuum supply; the base plate and the side plates form a supporting frame, and the bottom sealing plate seals the internal structure. The electrical inlet mounting plate and the wire inlet manage power supply, and the lower power box is integrated with a control circuit. The design improves the integration level, the pneumatic control precision and the production efficiency of the equipment, and is suitable for automatic production of the solid-state lithium battery.

The embodiment of the utility model provides a sealing nail pressing structure and battery production equipment, and relates to the technical field of battery production. The sealing nail pressing structure comprises a battery cell transferring device and a nail pressing mechanism device, the nail pressing mechanism device comprises a nail pressing mechanism and a driving mechanism, the driving mechanism and the nail pressing mechanism are mounted on the battery cell transferring device, and the driving mechanism is in transmission connection with the nail pressing mechanism; the battery cell transferring device is provided with a battery cell fixing mechanism, a to-be-welded battery cell is mounted on the battery cell fixing mechanism, the nail pressing mechanism is movably arranged in a liquid injection hole of the to-be-welded battery cell, and a sealing nail is fixed in the liquid injection hole of the to-be-welded battery cell through the nail pressing mechanism. The nail pressing structure of the sealing nail can achieve the technical effect of improving the production efficiency of the battery cell.

The embodiment of the application provides a power battery liquid cooling device and an electric vehicle, and relates to the technical field of batteries. The power battery liquid cooling device comprises an upper cover plate, a cell fixing support, a cell assembly, a liquid cooling plate, a battery package frame, a lower bottom plate and a reinforcing support bottom plate; the upper cover plate, the battery package frame and the lower bottom plate are matched and installed, and the upper cover plate, the battery package frame and the lower bottom plate form an installation space of the cell assembly; the cell assembly comprises a plurality of cells, a plurality of first cell installation grooves are arranged on the cell fixing support, the plurality of first cell installation grooves and the plurality of cells are matched one by one, the first cell installation groove is sleeved on the first part of the cell, and the cell fixing support is abutted in the limiting groove of the battery package frame; the liquid cooling plate is provided with a plurality of second cell installation grooves, and the second cell installation groove is sleeved on the second part of the cell; and the reinforcing support bottom plate is fixedly installed on the lower bottom plate. The power battery liquid cooling device can realize the technical effects of improving the structural strength and the cooling efficiency.

The invention relates to the technical field of solar cell experiment workbenches, in particular to a high-efficiency solar cell experiment workbench device which comprises a workbench body, a feeding frame, a corrosion pool, a cleaning pool and a drying pool are arranged at the top of the workbench body, a cell fixing assembly is arranged in the corrosion pool, and an airflow positioning assembly is installed at the bottom of the feeding frame; the battery fixing assembly comprises a concave frame, baffles, transverse pushing assemblies and an upward pushing assembly, the two ends of the concave frame are fixed to the two baffles on the outermost side respectively, every two adjacent baffles form a group, a solar battery is placed between one group of baffles, the upward pushing assembly is fixed to the concave frame, the two transverse pushing assemblies are fixed to one baffle in the same group respectively, and the two transverse pushing assemblies are fixed to the other baffle in the same group respectively. The transverse pushing assembly comprises a fixing plate, a ball screw, a motor and a transverse pushing frame. The technical problems that according to an existing battery experiment workbench, a battery is inconvenient to take and place from a battery fixing box, and the battery is prone to being damaged after colliding with the battery fixing box are solved.

The invention relates to the technical field of batteries, in particular to a high-dynamics energy storage battery cell single body and an energy storage module applying the high-dynamics energy storage battery cell single body, the high-dynamics energy storage battery cell single body comprises a battery cell body, a protective carrying sleeve is fixedly arranged on one side of the battery cell body, a matched boss is fixedly arranged on the other side of the battery cell body, a movable sealing assembly is installed at the protective carrying sleeve, and the movable sealing assembly is connected with the matched boss. The movable sealing assembly can seal the protection carrying sleeve and the matching boss, a movable electrical connection mechanism is further installed in the protection carrying sleeve and connected with the movable sealing assembly, the movable electrical connection mechanism is driven by the movable sealing assembly to move, and electrical connection between the battery cell bodies is achieved. The invention further relates to an energy storage module which comprises a module carrying box, a battery cell carrying frame is fixedly arranged in the module carrying box, a battery cell body is positioned through the battery cell carrying frame, and a battery cell fixing rod is matched with the battery cell carrying frame to fix the battery cell body in the battery cell carrying frame.

The utility model relates to the technical field of battery production equipment, in particular to a fixing device for automatic rubberizing of a lithium battery cell, which comprises a working table, rubberizing grooves are arranged on two sides of the working table, a fixed pressing plate is movably arranged on one side of the working table, a first pressure spring is fixedly arranged on one side of the fixed pressing plate, and a second pressure spring is fixedly arranged on the other side of the working table. A first pressing plate is fixedly arranged on the inner side of the workbench, a second pressing spring is fixedly arranged in the fixed pressing plate, an auxiliary pressing plate is movably arranged above the fixed pressing plate, and a protection box is fixedly arranged above the workbench. When a worker fixes a battery cell, the worker can pull open an auxiliary pressing plate and pull open a fixed pressing plate at the same time to clamp the battery cell, so that pre-positioning and fixing of the battery cell are rapidly carried out, and then the worker drives a hydraulic telescopic rod by utilizing a hydraulic machine to further fix the battery cell; and then the automatic rubberizing machine can be used for rubberizing the two sides of the battery cell on the rubberizing groove.

The invention relates to the technical field of solar cell materials, and provides a solar power generation module cell fixing adhesive tape and a preparation method thereof. The adhesive tape comprises a base material layer and an adhesive layer, wherein the base material layer is prepared from 40 to 70 parts of EVA (Ethylene Vinyl Acetate), 15 to 30 parts of PET (Polyethylene Terephthalate), 5 to 15 parts of hydroxylated lignin, 2 to 10 parts of grafted EVA, 2 to 10 parts of cyclotriphosphazene cross-linking agent, 1.5 to 8 parts of hydrogenated castor oil, 1 to 5 parts of initiator and 0.5 to 2.5 parts of silane coupling agent; the adhesive layer is prepared from 30 to 60 parts of acrylate adhesive and 15 to 30 parts of modified polyurethane. According to the invention, EVA and PET are adopted as base materials and have relatively high compatibility with a packaging material, and after multi-component crosslinking, the base material layer has a more compact and stable structure, so that the anti-ultraviolet, anti-aging and thermodynamic properties are greatly improved; and the modified polyurethane is matched with the acrylate adhesive, so that the performance of the adhesive layer is greatly improved. And the bonding strength between the substrate layer and the adhesive layer is enhanced, so that the cohesion strength of the adhesive tape is improved.

Provided in the present invention is a compact and lightweight thermal-runaway propagation suppression structure for a lithium-ion battery module. The structure comprises: thermal insulation sleeves, which each cover a battery cell; a high-specific-heat-capacity thermally-conductive frame, in which all battery cells and thermal insulation sleeves are embedded; thermal insulation plates, which are each placed at the top of the high-specific-heat-capacity thermally-conductive frame; and cooling measures, which are arranged on side faces of the high-specific-heat-capacity thermally-conductive frame. The overall lightweight structure in the present invention enables all the battery cells to share one heat dissipation element, thereby increasing the utilization rate of the heat dissipation element; moreover, the structure in the present invention facilitates the uniform heating of each surface of each battery cell in the module, makes full use of the thermal mass of an individual battery cell, and allows all the battery cells in the module to participate in heat sharing. In addition, the frame achieves the function of fixing the battery cells, and no additional battery-cell fixing apparatus is required for assembling the battery module. Therefore, the present invention is conducive to simplifying the structure of the module, providing a thermal-runaway propagation suppression structure with a smaller volume, and reducing the loss of energy density of the battery module caused by safety measures.

The present invention relates to the field of battery technology, specifically to a high-kinetic energy storage cell monomer and an energy storage module using the monomer, wherein the high-kinetic energy storage cell monomer includes a cell body, a protective carrier sleeve is fixedly provided on one side of the cell body, and a matching boss is fixedly provided on the other side, a movable sealing component is installed at the protective carrier sleeve, and the movable sealing component can seal the protective carrier sleeve and the matching boss, and a movable electrical connection mechanism is also installed in the protective carrier sleeve, and the movable electrical connection mechanism is connected to the movable sealing component, and the movable electrical connection mechanism is driven to move by the movable sealing component to realize electrical connection between the cell bodies. The present invention also relates to an energy storage module, including a module carrier box, a cell carrier frame is fixedly provided in the module carrier box, the cell body is positioned by the cell carrier frame, and the cell fixing rod cooperates with the cell carrier frame to fix the cell body in the cell carrier frame.

The invention discloses an energy storage battery module, which comprises a battery pack consisting of a plurality of battery cells, an upper and lower wire harness isolation plate and a BMS (Battery Management System) module, the wire harness isolation plate is provided with a battery cell fixing groove corresponding to the battery cell, and an input / output electrode aluminum bar connected with the BMS module through a battery cell state sampling wire is arranged in the wire harness isolation plate; the BMS module further connects the BMS positive electrode end with the input / output electrode aluminum bar negative electrode end through a soft aluminum bar, and the input / output electrode aluminum bar positive electrode end and the BMS negative electrode end serve as positive and negative electrode input / output of the whole module. The battery pack composed of a plurality of battery cells is matched with the input / output pole aluminum bar to realize series-parallel grouping of the battery cells so as to meet energy storage and power supply requirements, the battery cell state sampling line is introduced so that the BMS module can realize state acquisition and performance monitoring of each battery cell, and the soft aluminum bar is also introduced to further realize power-on work of the whole module. And the battery pack capacity, the performance requirement and the structural stability are ensured while the safety requirement of the electrical gap of the battery core is met.

The utility model discloses a fuel cell system support structure for a business ship, which relates to the technical field of fuel cell fixation and comprises a support outer frame, a buffer balance component is arranged in the support outer frame, a fuel cell is fixedly connected in the buffer balance component, and a movable heat dissipation component is arranged on the lower side in the support outer frame. According to the utility model, through the self-adaptability of the rotating rod and the moving plate, the cell fixing groove can be always kept horizontal when the ship body shakes, and meanwhile, the shaking of the moving plate can be kept at the middle position under the limitation of the traction assembly, so that the collision of fuel cells is prevented; and the movable heat dissipation plate and the heat dissipation fan can be rapidly installed at the bottom of the movable plate through the fixed opening and closing assembly, heat dissipation is continuously conducted on the fuel cell, the movable heat dissipation plate can move in a buffer groove along with shaking of the ship body through adaptation of a buffer spring, the movable heat dissipation plate is located at the bottom of the movable plate all the time, and the heat dissipation efficiency of the device is improved.

The utility model belongs to the field of medical equipment, and provides an anaesthesia machine which comprises a machine frame. The breathing loop is detachably arranged on the rack, and an oxygen detection opening is formed in the breathing loop; the oxygen battery fixing piece is used for containing an oxygen battery, the oxygen battery fixing piece is arranged on the rack and located between the rack and the breathing circuit, an installation space is formed in the oxygen battery fixing piece, at least the power connection end of the oxygen battery is detachably embedded in the installation space, and the detection end of the oxygen battery faces the oxygen detection opening. According to the anesthesia machine disclosed by the utility model, the oxygen battery fixing piece for accommodating the oxygen battery is arranged on the rack of the anesthesia machine and is separated from the breathing loop, so that when the breathing loop is detached for cleaning and disinfection or other operations, the oxygen battery is not detached together but is kept in situ; and the oxygen battery cable is not influenced by the disassembly of the breathing circuit, so that the problems of storage and storage of the oxygen battery and the cable during the disassembly of the breathing circuit in the prior art are properly solved.

To solve a problem in which a conventional battery module is difficult to be disassembled.SOLUTION: A battery module 1 according to the present invention includes a plurality of battery cells 20 arranged side by side in a stacking direction, and a battery case 10 that houses the plurality of battery cells 20. The battery case 10 includes a plurality of through holes 11, 12 that penetrate the wall surfaces at positions corresponding to the plurality of battery cells 20 on two wall surfaces facing each other in a width direction perpendicular to the stacking direction, and the plurality of battery cells 20 each have cell fixing arms 21a, 22a that are electrically connected to electrodes and elastically support cell fixing protrusions 21b, 22b that fit into the corresponding through holes.SELECTED DRAWING: Figure 3

A battery module according to an embodiment of the present invention may include a case, a battery cell assembly accommodated inside the case and comprising a plurality of battery cells, a cell holder disposed inside the case and including a plurality of cell fixing holes into which the battery cells are inserted, a foam portion disposed on one side of the cell holder, an immersion portion disposed on the other side of the cell holder, and a sealing member provided between the cell holder and the battery cell assembly. Here, the sealing member may be disposed between the foam portion and the immersion portion. In addition, one ends of the battery cells may be positioned in the foam portion, and the other ends of the battery cells may be positioned in the immersion portion.

The invention discloses a clamp uncovering and clamping assembly of a solid-state lithium battery cell fixing clamp. The clamp uncovering and clamping assembly comprises an uncovering assembly, a transferring assembly and a manipulator base. The uncovering assembly is composed of a sliding rail mounting plate, an unclamping positioning conical block mounting plate, an air cylinder fixing plate, a linear guide rail, a matching piece, a sliding block connecting plate, an unclamping positioning conical block and an air cylinder and is matched with an upper cover plate grabbing mechanism of an existing solid-state lithium battery cell fixing clamp. The transferring assembly comprises a mounting plate, a sliding assembly, a sliding block connecting plate, an air cylinder mounting plate, a buffer mounting base, a tank chain and a translation rail and is used for buffering the transferring clamp. The assembly solves the problems of inaccurate uncovering positioning and large transfer vibration in the prior art, realizes automatic uncovering and transfer, and improves the protection and production efficiency of the solid-state battery cell.

The utility model discloses a battery cell fixing structure of a storage battery, which belongs to the field of storage battery reinforcement, solves the problems that the overall specification of the existing battery cell fixing frame is limited and the existing battery cell fixing frame cannot be flexibly adjusted, and comprises a left connecting plate, a right connecting plate and a middle end connecting piece, a butt joint mechanism is arranged between the left connecting plate and the right connecting plate, a middle-end connecting piece for adjusting the distance and the size of the left connecting plate and the right connecting plate is arranged between the left connecting plate and the right connecting plate, and the middle-end connecting piece comprises a splicing plate and a limiting block. And the overall specification and size of the equipment can be adjusted and changed in real time according to the number of the battery cells needing to be installed, the application range of the equipment is expanded, butt joint can be conducted on multiple sets of outer frames subsequently, the stability of each set of equipment during butt joint is guaranteed, and the working quality of the equipment is improved.

The present invention relates to a battery cell tray, and more particularly, to a battery cell tray for storing and transferring stacked battery cells. The battery cell tray according to a first embodiment of the present invention comprises: a cell fixing unit in which a battery cell is fixed; a position measuring unit that measures the position of each battery cell inserted into the cell fixing unit; and a processor which calculates the fixing position of each battery cell fixed in the cell fixing unit according to the data measured by the position measuring unit. Therefore, the position of the battery cell inserted into the cell fixing unit is automatically measured, so that the fixing position of the battery cell fixed in the cell fixing unit can be identified.

The present invention provides an electric cell, a battery module, a battery assembly, a battery assembly design method and a vehicle. The main body of the electric cell is a cuboid, and the main body includes a first side face and a second side face arranged at intervals along the height direction of the cuboid, a third side face and a fourth side face arranged at intervals along the length direction of the cuboid, and a fifth side face and a sixth side face arranged at intervals along the width direction of the cuboid. The electric cell further includes: an electric cell positive electrode and an electric cell negative electrode which are arranged on the first side face of the main body and are respectively close to the third side face and the fourth side face of the main body; two electric cell fixing hole groups which are arranged on the main body and are symmetrical about the central plane between the third side face and the fourth side face, and each electric cell fixing hole group includes at least one electric cell fixing hole penetrating through the width direction of the cuboid, and each electric cell fixing hole is used for a liquid cooling pipe to pass through, so as to solve the problems in the prior art that the heat management performance is poor and the integration efficiency of the battery assembly is low due to the complex fixing structure and heat management structure of the electric cell.

The invention discloses a battery cell fixing clamp of a solid-state lithium battery cell narrow glue pasting machine, the battery cell fixing clamp comprises a clamp upper cover plate, a lower cover plate, an upper cover plate grabbing mechanism and a plurality of battery cell positioning blocks, buffer materials are fixed at the lower part of the upper cover plate and the upper part of the lower cover plate, and the brittle solid-state battery cell is prevented from being damaged by too large pressure; pressing claw mechanism assemblies are arranged on the two sides of the upper cover plate, each pressing claw mechanism assembly comprises a pressing claw fixing plate, a pressing claw and an elastic piece, and flexible fixing is achieved; positioning guide devices are arranged at four top corners of the lower cover plate and comprise guide shafts and limiting rubber columns, positioning holes and guide copper sleeves are correspondingly arranged on the upper cover plate, and rapid and accurate positioning is ensured; the five positioning blocks are fixed on the lower cover plate and provide multi-point support; clamping grooves are formed in the grabbing mechanism, so that manipulator operation is facilitated; six through grooves are formed in the upper cover plate and the lower cover plate of the clamp and matched with rubberizing positions. According to the design of the invention, the cell protection and rubberizing precision and efficiency are improved.

A battery cell strength testing jig includes a lead gripper in which an electrode lead drawn out from a side portion of a battery cell is fixed. The battery cell strength testing jig further includes a cell fixing member in which the battery cell is fixed. The cell fixing member is installed to be movable in a thickness direction of the battery cell. A relative displacement occurs between a cell body portion and the electrode lead of the battery cell when the cell fixing member is moved.