314Ah square aluminum shell battery cell and high-capacity tab thereof

Abstract

The invention relates to the field of batteries, in particular to a 314Ah square aluminum shell battery cell and a high-capacity tab thereof, the 314Ah square aluminum shell battery cell comprises a shell used for storing the battery cell, the shell is made of a square aluminum shell material, and a battery cell assembly is arranged in the shell; wherein the battery cell assembly is composed of a battery cell main body and a cover plate arranged at the top of the battery cell main body; the remedy mechanism is used for carrying out cooling or fire extinguishing treatment on the battery cell with overhigh temperature and is arranged in the shell; according to the 314Ah square aluminum shell battery cell and the high-capacity tab thereof, the outer side of the battery cell can be wrapped through the guide plate and the turnover plate, a roof cornice state is presented, and the battery cell can be stored in the battery cell, so that the battery cell can be stored in the battery cell, and the battery cell and the high-capacity tab can be stored in the battery cell. Therefore, a large amount of heat can be discharged outwards along the surfaces of the turnover plate and the guide plate under the guidance of the guide plate and the turnover plate in a cornice state.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and specifically to a 314Ah square aluminum shell battery cell and its large-capacity tab. Background Art

[0002] Lithium batteries are a common type of battery, with advantages such as high energy density, lightweight, and good cycle life. Currently, multi-tab batteries with higher power output and energy density are widely used in electric vehicles and energy storage systems.

[0003] If the overall tab is thin and small in volume, the root is prone to fatigue fracture, resulting in battery failure; currently, between the battery cell main body and the housing, they are all fixed through an insulating bracket plus thermal conductive glue, which will cause the battery cell main body to mainly dissipate heat from the thermal conductive glue part. However, only the upper half of the battery cell main body can have a better heat dissipation space, while the lower half will accumulate at the bottom of the inner cavity of the housing and is difficult to dissipate. Summary of the Invention

[0004] The present invention aims to provide a 314Ah square aluminum shell battery cell and its large-capacity tab to solve the problems raised in the above background art.

[0005] To achieve the above object, the present invention provides the following technical solution: A 314Ah square aluminum shell battery cell, including a housing for storing the battery cell, wherein the housing is made of square aluminum shell material, and a battery cell assembly is arranged inside the housing; The battery cell assembly is composed of a battery cell main body and a cover plate arranged on its top; A remedial mechanism for cooling or extinguishing the battery cell with too high temperature, the remedial mechanism is arranged inside the housing; An adjustment mechanism for discharging the heat inside the housing, the adjustment mechanism is symmetrically arranged at both ends of the housing; At the bottom of the battery cell assembly, a bottom inclined bar and a symmetric block are respectively fixedly installed, the bottom of the bottom inclined bar is extrusion-fitted with an inclined plane body, and the inclined plane body penetrates inside the housing and extends to its outside; The outside of the housing is fixedly connected with a frame body, and the inside of the frame body is slidably fitted with the inclined plane body.

[0006] Preferably, the remedial mechanism includes a retention pipe, the retention pipe is fixedly installed at the bottom of the inner cavity of the housing, and a partition plate is fixedly connected inside the retention pipe; The partition plate is used to divide the inside of the retention pipe into upper and lower two chambers.

[0007] Preferably, hot melt adhesive films are symmetrically connected to both ends of the retention tube. The hot melt adhesive film belongs to a low-temperature EVA adhesive film, and its melting point is about 60°C - 70°C. Compressed fire extinguishing gas is placed in the cavity formed by the hot melt adhesive film, the partition board, and the retention tube.

[0008] Preferably, a hollow column is fixedly installed inside the retention tube. A spring is fixedly connected to the bottom of the inner cavity of the hollow column. The top end of the spring is fixedly connected to a stacking body. The stacking body is slidably fitted inside the hollow column, and the stacking body penetrates through the top of the retention tube and extends to the outside thereof.

[0009] Preferably, holes are formed on both sides of the stacking body. An inverted V-shaped convex disk, which is used to guide the phase change paraffin contained in the stacking body and discharge it outward through the holes, and is fixedly installed inside the stacking body. A resilient strip, which is used for the delayed upward extension treatment of the stacking body. Its top end is fixedly connected to the stacking body, and its bottom end is fixedly connected to the retention tube.

[0010] Preferably, the adjusting mechanism includes a short rail, which is fixedly installed inside the housing. A limit slider is slidably fitted inside the short rail. The top end of the limit slider is fixedly connected to a U-shaped strip. A resilient telescopic rod is fixedly connected to the bottom of the central part of the U-shaped strip, and the resilient telescopic rod is used for the resetting treatment of the limit slider.

[0011] Preferably, an outer support is fixedly installed on the outside of the housing. A sleeve filter is rotatably connected to the inside of the outer support through a fixed shaft. An embedded filter is slidably fitted inside the sleeve filter. A separating piece, which is used to increase the filtering degree of the sleeve filter, and is fixedly connected to the inside of the embedded filter.

[0012] Preferably, a guide plate is fixedly connected to the top end of the embedded filter. A perforation is formed on the top of the guide plate, and the perforation is fitted with the limit slider in an embedded manner. A shock absorption component is inserted inside the guide plate. The end without damping of the shock absorption component is fixedly connected to a fastener, and the fastener is fixedly connected to the outside of the housing. Wherein the guide plate moves bidirectionally along the surface of the shock absorption component. Elastic sheets are fixedly connected to both ends of the embedded filter, the guide plate, and the sleeve filter, and the elastic sheets are fixedly connected to the outside of the housing.

[0013] Preferably, a flip plate is rotatably installed on the outside of the housing. A dust removal head is fixedly connected to the outside of the flip plate. A filter screen is externally pressed and fitted with the dust removal head, and the filter screen is fixedly installed on the outside of the housing.

[0014] Preferably, an external rail is fixedly installed on the side of the flipping plate away from the dust removal head. A moving block is slidably fitted inside the external rail. The top of the moving block is fixedly connected to a connecting bar. A limiting slider is sleeved outside the connecting bar, and the limiting slider is fixedly connected to the inner side of the housing. The top of the connecting bar is fixedly connected to a fixing piece, and the fixing piece is fixedly connected to the inner side of the housing.

[0015] Preferably, a Z-shaped rod is fixedly connected to the outside of the guiding plate. One end of the Z-shaped rod away from the guiding plate is fixedly connected to a pushing block. The pushing block is in pressing fit with the connecting bar and is used for moving the moving block upward.

[0016] A large-capacity tab includes: an electrical connection mechanism for connecting and processing with an external circuit; The electrical connection mechanism includes a stepped tab. The thicker part of the stepped tab is connected to the inside of the battery cell assembly, and the thinner part of the stepped tab is exposed outside the battery cell assembly.

[0017] Preferably, a first connecting piece is fixedly connected to the top of the battery cell assembly. A second connecting piece is fitted and embedded on the top of the first connecting piece. A transfer piece is in pressing fit with the top of the inner cavity of the second connecting piece, and the bottom of the transfer piece is connected to the stepped tab; A cap is arranged on the top of the second connecting piece. A terminal is arranged at the bottom of the cap, and the bottom end of the terminal is connected to the transfer piece.

[0018] Compared with the prior art, the beneficial effects of the present invention are: 1. Enter the inside of the housing through the guiding plate and drive the flipping plate to tilt upward. In this state, the guiding plate and the flipping plate will wrap the outside of the battery cell and present a state similar to the eaves of a roof. Therefore, when the battery cell assembly works and generates a large amount of heat, because the density of the hot air is less than that of the air, a large amount of heat will be discharged outward along the surfaces of the flipping plate and the guiding plate under the guidance of the state where the flipping plate and the guiding plate maintain the eaves state.

[0019] 2. When the battery cell is placed inside the housing, the cover plate on the top of the battery cell will press the U-shaped strip, thus generating a linkage reaction, so that the limiting slider connected to the bottom thereof will be inserted into the through hole opened on the top of the guiding plate, thereby playing a role in limiting the guiding plate entering the inside of the housing and indirectly limiting the flipping plate.

[0020] 3. When the battery cell is not placed inside the housing, the guide plate has a dual option of being movable and limited. When the embedded filter screen and the sleeve filter screen need to be cleaned, the guide plate is pushed outwards from the housing, and then the vertical end face of the guide plate is limited by the limit slider, so as to facilitate the operator to clean the embedded filter screen and the sleeve filter screen.

[0021] 4. When the temperature at the bottom of the inner cavity of the housing is too high, the battery cell is pulled upwards from the housing by transmission. During the process of the separation of the battery cell from the housing, the accumulation body is pushed upwards and stretches the toughness strip, and the phase-change paraffin inside the accumulation and the accumulation body will roll along the inverted V convex disc into the bottom of the inner cavity of the housing, so as to absorb a large amount of heat at the bottom of the inner cavity of the housing by using the phase-change paraffin.

[0022] 5. When sparks or combustion occur at the bottom of the battery cell assembly, the high-temperature heat will melt the hot melt adhesive film, so that the compressed fire extinguishing gas stored in the lower half cavity of the retention tube will burst out, and the heat source and the fire source will be extinguished and cooled. Brief Description of the Drawings

[0023] Figure 1 It is a schematic external structure diagram of a 314Ah square aluminum shell battery cell of the present invention.

[0024] Figure 2 It is a schematic full-section structure diagram of the whole device of the present invention.

[0025] Figure 3 It is a schematic sectional structure diagram of the lower half part of the housing of the present invention.

[0026] Figure 4 It is a schematic sectional structure diagram of the retention tube of the present invention.

[0027] Figure 5 It is a schematic longitudinal sectional enlarged structure diagram of the retention tube of the present invention.

[0028] Figure 6 It is a schematic sectional structure diagram of the cross section of the retention tube of the present invention.

[0029] Figure 7 It is a schematic structure diagram of the adjusting mechanism of the present invention.

[0030] Figure 8 It is a schematic central sectional structure diagram of the first component of the adjusting mechanism of the present invention.

[0031] Figure 9 It is a schematic side sectional structure diagram of the first component of the adjusting mechanism of the present invention.

[0032] Figure 10 It is a schematic enlarged structure diagram of the first component of the adjusting mechanism of the present invention.

[0033] Figure 11 This is an enlarged structural schematic diagram of the filter screen embedded in the present invention.

[0034] Figure 12 This is an enlarged structural schematic diagram of the second component of the adjustment mechanism of the present invention.

[0035] Figure 13 This is a cross-sectional structural schematic diagram of the third component of the adjustment mechanism of the present invention.

[0036] Figure 14 This is a cross-sectional structural schematic diagram of the electrical connection mechanism of the present invention.

[0037] Figure 15 This is a longitudinal sectional structural schematic diagram of the electrical connection mechanism of the present invention.

[0038] In the figure: 1. Housing; 2. Battery cell assembly; 3. Electrical connection mechanism; 4. Remedial mechanism; 5. Adjustment mechanism; 6. Bottom inclined strip; 7. Inclined surface body; 8. Frame body; 9. Symmetric block; 41. Retention tube; 42. Partition plate; 43. Hot melt adhesive film; 44. Hollow column; 45. Spring; 46. Accumulation body; 47. Inverted V convex disc; 48. Tough strip; 51. Short rail; 52. Limit slider; 53. U-shaped strip; 54. Shock absorption assembly; 55. Outer support; 56. Sleeve filter screen; 57. Embedded filter screen; 58. Separation sheet; 59. Guide plate; 50. Flip plate; 501. External rail; 502. Moving block; 503. Connection strip; 504. Limit slider; 505. Fixed sheet; 506. Z-shaped rod; 507. Push block; 508. Filter screen; 509. Dust removal head; 500. Perforation; 61. Fastener; 62. Elastic sheet; 31. Step-shaped tab; 32. Adapter piece; 33. First connecting piece; 34. Second connecting piece; 35. Cap; 36. Terminal. Detailed implementation manners

[0039] Next, in combination with the drawings and specific implementation manners, the present invention will be further described. It should be noted that, on the premise of not conflicting, any combination of the following-described embodiments or technical features can form a new embodiment. It should be known that the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0040] Please refer to Figures 1 to 15 , the present invention provides a technical solution: As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown in the figure, it includes a housing 1 for storing and processing battery cells. The housing 1 is made of square aluminum shell material, and a battery cell assembly 2 is arranged inside the housing 1; The battery cell assembly 2 is composed of a battery cell main body and a cover plate arranged on its top; A remedial mechanism 4 for cooling or extinguishing battery cells with too high temperature, and the remedial mechanism 4 is arranged inside the housing 1; A regulating mechanism 5 for discharging the heat inside the housing 1, and the regulating mechanism 5 is symmetrically arranged at both ends of the housing 1; Bottom inclined strips 6 and symmetric blocks 9 are respectively fixedly installed at the bottom of the battery cell assembly 2. The bottom of the bottom inclined strip 6 is extrusion-fitted with an inclined plane body 7, and the inclined plane body 7 penetrates inside the housing 1 and extends to its outside; A frame 8 is fixedly connected to the outside of the housing 1, and the inside of the frame 8 is slidably fitted with the inclined plane body 7.

[0041] The remedial mechanism 4 includes a retention pipe 41, and the retention pipe 41 is fixedly installed at the bottom of the inner cavity of the housing 1. A partition plate 42 is fixedly connected inside the retention pipe 41; The partition plate 42 is used to divide the inside of the retention pipe 41 into upper and lower two chambers; Both ends of the retention pipe 41 are symmetrically connected with hot melt adhesive films 43. The hot melt adhesive films 43 belong to low-temperature EVA adhesive films, and the melting point is about 60°C - 70°C; Compressed fire extinguishing gas is placed in the cavity surrounded by the hot melt adhesive film 43, the partition plate 42 and the retention pipe 41. In addition, when sparks or combustion occur at the bottom of the battery cell assembly 2, the high-temperature heat will melt the hot melt adhesive film 43, so that the compressed fire extinguishing gas stored in the lower half cavity of the retention pipe 41 will burst out, and play a role in extinguishing and cooling the heat source and fire source.

[0042] A hollow column 44 is fixedly installed inside the retention pipe 41. A spring 45 is fixedly connected to the bottom of the inner cavity of the hollow column 44. The top of the spring 45 is fixedly connected with a stacking body 46. The stacking body 46 is slidably fitted inside the hollow column 44, and the stacking body 46 penetrates through the top of the retention pipe 41 and extends to its outside; Holes are formed on both sides of the stacking body 46; An inverted V-shaped convex disk 41, which is used to guide the phase change paraffin contained in the stacking body 46 and discharge it out through the holes, and is fixedly installed inside the stacking body 46; The resilient strip 48 is used for the delayed upward extension treatment of the accumulation body 46, and its top end is fixedly connected to the accumulation body 46, while the bottom end is fixedly connected to the retention pipe 41. When the bottom temperature of the battery cell assembly 2 exceeds a predetermined value, an operator or an external driving device can push the inclined body 7 into the housing 1 and exert an upward extrusion on the bottom inclined strip 6 fixedly installed at the bottom of the battery cell assembly 2. At this time, the battery cell assembly 2 will be drawn out upward from the inside of the housing 1. Initially, the battery cell assembly 2 always presses on the accumulation body 46. As the battery cell assembly 2 is withdrawn, the accumulation body 46 has a tendency to extend upward under the action of the spring 45. A resilient strip 48 is fixedly connected to the outside of the accumulation body 46. When the battery cell assembly 2 is withdrawn upward instantaneously, the spring 45 will not directly push the accumulation body 46 upward. Instead, after the initially stressed resilient strip 48 returns to its original state, it will push the accumulation body 46 upward and stretch the resilient strip 48. The phase-change paraffin accumulated inside the accumulation body 46 will roll along the inverted V-shaped convex disk 47 to the bottom of the inner cavity of the housing 1, thereby playing a role in absorbing a large amount of heat at the bottom of the inner cavity of the housing 1 by using the phase-change paraffin.

[0043] The function of the resilient strip 48 is to prevent the battery cell assembly 2 from shaking slightly, causing it to disengage from the accumulation body 46 in a very short time without exerting pressure on it, so that the phase-change paraffin inside the accumulation body 46 overflows outward.

[0044] As Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 12 and Figure 13 As shown in The bottom of the central part of the U-shaped strip 53 is fixedly connected with an elastic telescopic rod, and the elastic telescopic rod is used for resetting the limit slider 52. An outer support 55 is fixedly installed on the outside of the housing 1. A sleeve filter 56 is rotatably connected to the inside of the outer support 55 through a fixed shaft. An embedded filter 57 is slidably fitted inside the sleeve filter 56. The separation sheet 58 is used to increase the filtering degree of the sleeve filter 56 and is fixedly connected inside the embedded filter 57. The top end of the filter insert 57 is fixedly connected to a guide plate 59. A through hole 500 is formed in the top of the guide plate 59, and the through hole 500 is fitted with a limit slider 52 in an interference fit. A shock absorption assembly 54 is inserted into the inner side of the guide plate 59. The non-damping end of the shock absorption assembly 54 is fixedly connected to a fastener 61, and the fastener 61 is fixedly connected to the outer side of the housing 1. When the battery cell assembly 2 is not placed inside the housing 1, the guide plate 59 can be manually pushed inward toward the inside of the housing 1. The guide plate 59 is limited by the shock absorption assembly 54 and can only move back and forth. Then the guide plate 59 will enter the inside of the housing 1, and the vertical end face of the guide plate 59 is in contact with the outside of the battery cell assembly 2. At the same time, the damped end of the shock absorption assembly 54 is also in contact with the outside of the battery cell assembly 2, and plays a role in shock absorption and protection of the battery cell assembly 2. In addition, the non-damping end of the shock absorption assembly 54 is fixedly installed on the outer side of the housing 1 through the fastener 61.

[0045] The guide plate 59 moves bidirectionally along the surface of the shock absorption assembly 54. Elastic pieces 62 are fixedly connected to both ends of the filter insert 57, the guide plate 59 and the sleeve filter 56. The elastic pieces 62 fixedly connected to both ends of the guide plate 59, the filter insert 57 and the sleeve filter 56 are elastic and play a role in sealing. The elastic pieces 62 are fixedly connected to the outer side of the housing 1. When the guide plate 59 enters the inside of the housing 1, the filter insert 57 fixedly connected to its outer side will be received into the inside of the sleeve filter 56. The part of the filter insert 57 connected to the guide plate 59 is ductile. In addition, the sleeve filter 56 and the filter insert 57 are initially in an inclined state. However, as the guide plate 59 enters the housing 1, and the bottom of the sleeve filter 56 rotates through a fixed shaft inside the outer support 55, the sleeve filter 56 will deflect toward the housing 1. At the same time, the filter insert 57 will be received into the inside of the sleeve filter 56. A separating piece 58 is fixedly connected to the cavity of the filter insert 57. When the filter insert 57 is received into the inside of the sleeve filter 56, the separating piece 58 will coincide with the filter holes of the sleeve filter 56, thereby playing a role in increasing the filtering performance. At the same time, when the filter insert 57 is inside the sleeve filter 56, it is convenient for the operator to replace the separating piece 58 and clean the filter holes of the sleeve filter 56.

[0046] A turning plate 50 is rotatably installed on the outer side of the housing 1. A dust removing head 509 is fixedly connected to the outer side of the turning plate 50. The dust removing head 509 fixedly connected to the outer side of the turning plate 50 plays a role in cleaning the impurities at the filter holes of the filter screen 508 when the turning plate 50 is in the initial vertical state. The outer side of the dust removing head 509 is in interference fit with the filter screen 508, and the filter screen 508 is fixedly installed on the outer side of the housing 1. On the side of the turning plate 50 away from the dust removal head 509, an external track 501 is fixedly installed. A moving block 502 is slidably fitted inside the external track 501. The top of the moving block 502 is fixedly connected to a connecting bar 503. A limiting slider 504 is sleeved outside the connecting bar 503, and the limiting slider 504 is fixedly connected to the inner side of the housing 1. As the guide plate 59 enters the interior of the housing 1, the Z-shaped rod 506 fixedly connected to its vertical end face will move inward, and the other end of the Z-shaped rod 506 is fixedly connected to the pushing block 507. Therefore, the pushing block 507 will squeeze the connecting bar 503. The connecting bar 503 has a certain toughness. In addition, its top is connected to the fixed piece 505 and remains fixed. At the same time, the outside of the connecting bar 503 is slidably fitted with the limiting slider 504, and the limiting slider 504 serves to give a fulcrum to the connecting bar 503 to prevent the connecting bar 503 from shaking or deviating too much. The bottom end of the connecting bar 503 is connected to the moving block 502. Therefore, the moving block 502 pulled by the connecting bar 503 will move upward along the external track 501 until it reaches the top of the external track 501. However, the pushing block 507 is still squeezing the connecting bar 503. At this time, the pulling force on the moving block 502 is greater than the gravity of the turning plate 50 connected to the external track 501, causing the turning plate 50 to deflect inward, and the deflection angle is higher than the horizontal angle.

[0047] The top of the connecting bar 503 is fixedly connected to a fixed piece 505, and the fixed piece 505 is fixedly connected to the inner side of the housing 1; The outside of the guide plate 59 is fixedly connected to a Z-shaped rod 506. One end of the Z-shaped rod 506 away from the guide plate 59 is fixedly connected to a pushing block 507. The pushing block 507 is in squeezing fit with the connecting bar 503 and is used for the upward movement processing of the moving block 502. Finally, the turning plate 50 is in an upturned state inside the housing 1. At the same time, the guide plate 59 will also enter the interior of the housing 1. At this time, the battery cell assembly 2 is placed inside the housing 1. Subsequently, the cover plate inside the battery cell assembly 2 will squeeze the U-shaped strip 53 downward. Then, the limiting slider 52 connected to the bottom of the U-shaped strip 53 will be inserted into the through hole 500 along the short track 51. The through hole 500 is opened at the top of the guide plate 59, thereby playing a role in limiting the guide plate 59 and indirectly limiting the turning plate 50. When the battery cell assembly 2 does work and generates a large amount of heat, because the density of the hot air is less than the density of the air, the heat will float upward along the surface of the battery cell assembly 2, and then pass through the guide plate 59 and the turning plate 50 to maintain the guiding state, so that the heat will be discharged outward along the surfaces of the turning plate 50 and the guide plate 59, thereby playing a role in discharging heat and filtering impurities.

[0048] As Figure 14 and Figure 15 shown, an electrical connection mechanism 3 for connecting and processing with an external circuit; Among them, the electrical connection mechanism 3 includes a stepped tab 31. The thicker part of the stepped tab 31 is connected to the inside of the battery cell assembly 2, and the thinner part of the stepped tab 31 is exposed outside the battery cell assembly 2; A first connecting piece 33 is fixedly connected to the top of the battery cell assembly 2. A second connecting piece 34 is fitted and embedded at the top of the first connecting piece 33. A transfer piece 32 is press-fitted at the top of the inner cavity of the second connecting piece 34. The bottom of the transfer piece 32 is connected to the stepped tab 31; A cap 35 is arranged at the top of the second connecting piece 34. A terminal 36 is arranged at the bottom of the cap 35. The bottom end of the terminal 36 is connected to the transfer piece 32. The transfer piece 32 is welded to the stepped tab 31. The stepped tab 31 is in the shape of thicker at the bottom and thinner at the top, and the thickness dimension is controlled within the range of 1:1.5 - 1:2. At the same time, the thicker tab body can enhance the root strength and avoid breakage caused by the repeated action of mechanical stress generated by the expansion of the electrolyte or vibration during the charge and discharge process of the battery. In addition, the large-capacity tab can also reduce its own resistance, reduce the heat loss during the transmission of current inside the battery cell, and improve the energy efficiency. Then, the second connecting piece 34 is embedded into the first connecting piece 33 from top to bottom, and the transfer piece 32 is subjected to press-fitting and positioning treatment. Finally, the cap 35 is embedded into the top of the second connecting piece 34, and the terminal 36 at the bottom of the cap 35 is connected to the transfer piece 32.

[0049] When the present invention is in use: First, the transfer piece 32 is welded to the stepped tab 31. The stepped tab 31 is in the shape of thicker at the bottom and thinner at the top, and the thickness dimension is controlled within the range of 1:1.5 - 1:2. Then, the second connecting piece 34 is embedded into the first connecting piece 33 from top to bottom, and the transfer piece 32 is subjected to press-fitting and positioning treatment. Finally, the cap 35 is embedded into the top of the second connecting piece 34, and the terminal 36 at the bottom of the cap 35 is connected to the transfer piece 32.

[0050] When the battery cell assembly 2 is not placed inside the housing 1, the guide plate 59 can be manually pushed inward toward the inside of the housing 1. The guide plate 59 is limited by the shock-absorbing assembly 54 and can only move back and forth. Then the guide plate 59 will enter the inside of the housing 1, and the vertical end face of the guide plate 59 is in contact with the outside of the battery cell assembly 2. At the same time, the damped end of the shock-absorbing assembly 54 is also in contact with the outside of the battery cell assembly 2. In addition, the undamped end of the shock-absorbing assembly 54 is fixedly installed on the outside of the housing 1 through a fastener 61. When the guide plate 59 enters the inside of the housing 1, the embedded filter screen 57 fixedly connected to its outside will be received into the inside of the sleeve filter screen 56. The part of the embedded filter screen 57 connected to the guide plate 59 is flexible. In addition, the sleeve filter screen 56 and the embedded filter screen 57 are initially in an inclined state. However, as the guide plate 59 enters the housing 1, and the bottom of the sleeve filter screen 56 rotates through the fixed shaft inside the outer support 55, the sleeve filter screen 56 will deflect toward the housing 1, and at the same time, the embedded filter screen 57 will be received into the inside of the sleeve filter screen 56.

[0051] As the guide plate 59 enters the inside of the housing 1, the Z-shaped rod 506 fixedly connected to its vertical end face will move inward, and the other end of the Z-shaped rod 506 is fixedly connected to the push block 507. Therefore, the push block 507 will squeeze the connecting strip 503. The connecting strip 503 has a certain flexibility. In addition, its top end is connected to the fixed piece 505 and remains fixed. At the same time, a limit slider 504 is slidably fitted to the outside of the connecting strip 503, and the bottom end of the connecting strip 503 is connected to the moving block 502. Therefore, the moving block 502 pulled by the connecting strip 503 will move upward along the external rail 501 until it reaches the top end of the external rail 501. However, the push block 507 is still squeezing the connecting strip 503. At this time, the pulling force on the moving block 502 is greater than the gravity of the turning plate 50 connected to the external rail 501, causing the turning plate 50 to deflect inward, and the deflection angle is higher than the horizontal angle. Finally, the turning plate 50 is in an upturned state inside the housing 1, and at the same time, the guide plate 59 will also enter the inside of the housing 1. At this time, the battery cell assembly 2 is placed inside the housing 1. Subsequently, the cover plate inside the battery cell assembly 2 will squeeze the U-shaped strip 53 downward. Subsequently, the limit slider 52 connected to the bottom of the U-shaped strip 53 will be inserted into the through hole 500 along the short rail 51. The through hole 500 is opened at the top of the guide plate 59.

[0052] When the battery cell assembly 2 does work and generates a large amount of heat, because the density of the hot air is less than the density of the air, the heat will float upward along the surface of the battery cell assembly 2, and then through the guiding state maintained by the guide plate 59 and the turning plate 50, the heat will be discharged outward along the surfaces of the turning plate 50 and the guide plate 59.

[0053] When the bottom temperature of the battery cell assembly 2 exceeds a predetermined value, an operator or an external driving device can push the inclined body 7 into the housing 1 and exert an upward extrusion on the bottom inclined strip 6 fixedly installed at the bottom of the battery cell assembly 2. At this time, the battery cell assembly 2 will be drawn out upward from the inside of the housing 1. Initially, the battery cell assembly 2 has been pressing on the accumulation body 46 all the time. As the battery cell assembly 2 is drawn out, the accumulation body 46 has a tendency to protrude upward under the action of the spring 45. A resilient strip 48 is fixedly connected to the outside of the accumulation body 46. When the battery cell assembly 2 is drawn out upward instantaneously, the spring 45 will not directly push the accumulation body 46 upward. Instead, after the initially stressed resilient strip 48 returns to its original state, the spring 45 will push the accumulation body 46 upward and stretch the resilient strip 48. Then, the phase-change paraffin stored inside the accumulation body 46 will roll along the inverted V-shaped convex disc 47 into the bottom of the inner cavity of the housing 1. Additionally, when a spark or combustion occurs at the bottom of the battery cell assembly 2, the high-temperature heat will melt the hot-melt adhesive film 43, and then the compressed fire-extinguishing gas stored in the lower half cavity of the retention tube 41 will erupt and extinguish the heat source and the fire source.

[0054] The above embodiments are only the preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Those of ordinary skill in the art, starting from the above concepts and without creative labor, can make various transformations, which all fall within the scope of protection of the present invention.

Claims

1. A 314Ah square aluminum shell battery cell, characterized in that, Comprising: A housing for storing and processing the battery cells, wherein the housing is made of square aluminum shell material, and a battery cell assembly is arranged inside the housing; The battery cell assembly is composed of a battery cell body and a cover plate arranged on its top; A remedial mechanism for cooling or extinguishing the battery cells with too high temperature, and the remedial mechanism is arranged inside the housing; An adjusting mechanism for discharging the heat inside the housing, and the adjusting mechanism is symmetrically arranged at both ends of the housing; The bottom of the battery cell assembly is fixedly installed with bottom inclined strips and symmetric blocks respectively, the bottom of the bottom inclined strip is extrusion-fitted with an inclined plane body, and the inclined plane body penetrates inside the housing and extends to its outside; A frame body is fixedly connected to the outside of the housing, and the inside of the frame body is slidably fitted with the inclined plane body; The remedial mechanism includes a retention pipe, the retention pipe is fixedly installed at the bottom of the inner cavity of the housing, and a partition plate is fixedly connected inside the retention pipe; The partition plate is used to divide the inside of the retention pipe into upper and lower two chambers; The adjusting mechanism includes a short rail, the short rail is fixedly installed on the inner side of the housing, a limiting slider is slidably fitted inside the short rail, and the top of the limiting slider is fixedly connected with a U-shaped strip; A resilient telescopic rod is fixedly connected to the bottom of the central part of the U-shaped strip, and the resilient telescopic rod is used for resetting the limiting slider.

2. A 314Ah square aluminum shell battery cell according to claim 1, characterized in that: Both ends of the retention pipe are symmetrically connected with hot melt adhesive films, wherein the hot melt adhesive film belongs to a low-temperature type EVA adhesive film, and the melting point is about 60°C - 70°C; Compressed fire extinguishing gas is placed in the cavity surrounded by the hot melt adhesive film, the partition plate and the retention pipe.

3. A 314Ah square aluminum shell battery cell according to claim 1, characterized in that: A hollow column is fixedly installed inside the retention pipe, a spring is fixedly connected to the bottom of the inner cavity of the hollow column, the top of the spring is fixedly connected with an accumulation body, the accumulation body is slidably fitted inside the hollow column, and the accumulation body penetrates through the top of the retention pipe and extends to its outside; 4. A 314Ah square aluminum shell battery cell according to claim 3, characterized in that: Holes are formed on both sides of the accumulation body; An inverted V convex disk, which is used for guiding the phase change paraffin contained in the accumulation body and discharging it out through the holes, and is fixedly installed inside the accumulation body; A resilient strip, which is used for delaying the upward extension of the accumulation body, and its top is fixedly connected with the accumulation body, while the bottom end is fixedly connected with the retention pipe.

5. A 314Ah square aluminum shell battery cell according to claim 1, characterized in that: An outer support is fixedly installed on the outside of the housing, a sleeve filter is rotatably connected inside the outer support through a fixed shaft, and an embedded filter is slidably fitted inside the sleeve filter; A separating sheet, which is used for increasing the filtering degree of the sleeve filter, and is fixedly connected inside the embedded filter; 6. A 314Ah square aluminum shell battery cell according to claim 5, characterized in that: The top of the embedded filter is fixedly connected with a guiding plate, a perforation is formed on the top of the guiding plate, the perforation is fitted with the limiting slider in an embedded manner, a damping component is inserted inside the guiding plate, and the non-damping end of the damping component is fixedly connected with a fastener, and the fastener is fixedly connected to the outside of the housing; The guiding plate moves bidirectionally along the surface of the damping component, and elastic sheets are fixedly connected to both ends of the embedded filter, the guiding plate and the sleeve filter, and the elastic sheets are fixedly connected to the outside of the housing.

7. A 314Ah square aluminum shell battery cell according to claim 6, characterized in that: A turning plate is rotatably installed on the outer side of the housing. A dust removal head is fixedly connected to the outer side of the turning plate. A filter screen is externally pressed and fitted to the outer side of the dust removal head. The filter screen is fixedly installed on the outer side of the housing.

8. A 314Ah square aluminum shell battery cell according to claim 7, characterized in that: An external rail is fixedly installed on the side of the turning plate away from the dust removal head. A moving block is slidably fitted inside the external rail. A connecting bar is fixedly connected to the top of the moving block. A limiting slider is sleeved on the outer side of the connecting bar. The limiting slider is fixedly connected to the inner side of the housing; A fixing piece is fixedly connected to the top of the connecting bar. The fixing piece is fixedly connected to the inner side of the housing.

9. A 314Ah square aluminum shell battery cell according to claim 8, characterized in that: A Z-shaped rod is fixedly connected to the outer side of the guiding plate. One end of the Z-shaped rod away from the guiding plate is fixedly connected to a pushing block. The pushing block is in pressing fit with the connecting bar and is used for moving the moving block upward.

10. A large-capacity tab, which is used for a 314 Ah square aluminum shell battery cell as described in claim 1, and is characterized in that Including: An electrical connection mechanism for connecting and processing with an external circuit; The electrical connection mechanism includes a stepped tab. The part with a larger thickness of the stepped tab is connected to the inside of the battery cell assembly, and the part with a smaller thickness of the stepped tab is exposed outside the battery cell assembly.

11. A large-capacity tab according to claim 10, characterized in that: A first connecting piece is fixedly connected to the top of the battery cell assembly. A second connecting piece is fitted and embedded on the top of the first connecting piece. A transfer piece is pressed and fitted to the top of the inner cavity of the second connecting piece. The bottom of the transfer piece is connected to the stepped tab; A cap is arranged on the top of the second connecting piece. A terminal is arranged at the bottom of the cap. The bottom end of the terminal is connected to the transfer piece.

Images