A square-shaped semi-solid state lithium-ion battery

Abstract

The present invention relates to the technical field of lithium-ion batteries, and specifically to a square semi-solid lithium-ion battery, which includes a battery box shell. In the battery box shell, there is arranged a row of battery core plates, a row of temperature-measuring rods for detecting temperature between adjacent two battery core plates, a square plate frame for supporting the temperature-measuring rods arranged between adjacent two battery core plates, guiding long rods vertically arranged at the four corners of the square plate frame, a row of springs sleeved on the guiding long rods, a braking plate vertically contacted at one end of the temperature-measuring rod, a pulling elastic piece for pressing the braking plate, an expansion wheel mechanism for adjusting the distance between adjacent two battery core plates, and an air delivery mechanism for blowing air to cool the battery core plates. The semi-solid lithium-ion battery of the present invention charges and discharges through a row of battery core plates, and a heat dissipation empty layer space is left between adjacent two battery core plates. If a battery core plate accidentally overheats during operation, the battery core plates on both sides of the overheated battery core plate will move away, so that the heat dissipation space around the overheated battery core plate increases.

Description

Technical Field

[0001] The invention relates to the technical field of lithium ion batteries, in particular to a square semi-solid lithium ion battery. Background Art

[0002] The biggest difference between semi-solid lithium-ion batteries and ordinary batteries lies in their electrolytes. Semi-solid battery electrolytes are a solid-liquid mixed form, in which the liquid electrolyte content is about 5% to 10%, while traditional lithium batteries use liquid electrolytes. Due to the special electrolyte state of semi-solid batteries, when semi-solid batteries are squeezed or deformed, the ion exchange between the positive and negative electrodes is slower, so the ignition time is slower than traditional liquid lithium batteries, and the safety is relatively higher.

[0003] Semi-solid lithium-ion batteries still face the problem of battery heating during operation. How to fully and safely dissipate heat inside the semi-solid lithium-ion battery has always been a direction of innovative research and development. The internal space of the battery is limited, and multiple battery cells are arranged inside. If a battery cell accidentally overheats, the heat dissipation space around it will automatically expand, so that the heat can be quickly dissipated. Based on this research and development concept, the present invention provides a square semi-solid lithium-ion battery. Summary of the invention

[0004] The object of the present invention is to provide a square semi-solid lithium-ion battery to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a square semi-solid lithium-ion battery, comprising a battery box shell, a row of battery core plates are arranged in the battery box shell, a row of temperature measuring rods for detecting temperature between two adjacent battery core plates, a square plate frame for supporting the temperature measuring rods is arranged between two adjacent battery core plates, a guide long rod is vertically arranged at the four corners of the square plate frame, a row of springs is sleeved on the guide long rod, a brake plate vertically contacted by one end of the temperature measuring rod, a pull-back spring sheet for applying pressure to the brake plate, an expansion wheel mechanism for adjusting the distance between two adjacent battery core plates, and an air transmission mechanism for blowing air to cool the battery core plates, the expansion wheel mechanism is transmission-connected to the air transmission mechanism, the guide long rod slides through a through hole opened on the square plate frame, the guide long rod also slides through a through hole opened on a fixed baffle plate on the battery core plate, and a spring is supported between the adjacent baffle plates and the square plate frame, the end of the guide long rod is fixed on the battery box shell, and the end of the guide long rod is supported between the inner wall of the battery box shell and the baffle plate by setting a spring, and one end of the expansion wheel mechanism is transmission-connected to the brake plate.

[0006] One end of the pull-back spring is fixed on the square plate frame, and the other end is fixed on the brake plate. The brake plate slides through the plate hole opened on the square plate frame by setting a convex plate. A unit air hole for heat dissipation and exhaust is opened on the shell of one side of the battery box shell. One end of the temperature measuring rod is inserted into the circular groove opened on the frame body on one side of the square plate frame, and the other end of the temperature measuring rod passes through the through hole opened on the frame body on the other side of the square plate frame. Space for the temperature measuring rod to expand due to heat is reserved in the circular groove and the through hole on the square plate frame.

[0007] The air delivery mechanism includes an integrated shaft, a row of wind head devices driven by the integrated shaft, an air supply pipe connected to one end of each wind head device, and multiple air nozzles connected to the other end of the wind head device. One end of the air supply pipe passes through the battery box shell and extends to the outside. Each wind head device is correspondingly connected to an expansion wheel mechanism.

[0008] The air nozzle part includes an exhaust flat pipe connected to the wind head device at one end, an L-shaped pipe fixedly connected to the other end of the exhaust flat pipe, a positioning swing hingedly connected to the L-shaped pipe at one end, a follower swing cylinder slidably inserted at the other end of the positioning swing, a straight pipe hingedly connected to the follower swing cylinder at one end, and a T-shaped box fixedly connected to the straight pipe at one end. The T-shaped box is fixedly connected to the bracket provided on the square plate frame to move synchronously with the square plate frame, and an exhaust hole is opened on the T-shaped box to blow air between two adjacent battery core plates to cool down.

[0009] The expansion wheel mechanism includes an L-shaped adjustment plate with one end fixedly connected to the brake plate, a gear shaft integration driven by the other end of the L-shaped adjustment plate, an integrated frame supporting the gear shaft integration, and an expansion wheel driven and controlled by the gear shaft integration. The gear shaft integration is also transmission-connected to the wind head device. One end of the integrated frame is fixed to the square plate frame. The L-shaped adjustment plate slides through the plate hole opened on the integrated frame. The expansion wheel is a combination of two cam plates evenly arranged in a ring. The expansion wheel pushes the battery core plates on both sides away from each other by rotating.

[0010] The gear shaft integration includes a double-control shaft, a center shaft, a longitudinal worm, a tail drive shaft and a side shaft supported by an integrated frame. The integrated frame also includes a travel disk gear fixed at one end of the center shaft, and a prismatic shaft coaxially fixed with the tail drive shaft. A bevel gear is arranged at the joint between the prismatic shaft and the tail drive shaft to mesh with the bevel gear fixed at one end of the double-control shaft for transmission connection. The other end of the double-control shaft is fixed to the middle of the expansion wheel. The double-control shaft is also meshed with the helical teeth on the longitudinal worm through a fixed cylinder gear. One end of the longitudinal worm is meshed with the bevel gear fixed at one end of the side shaft through a fixed bevel gear. The other end of the side shaft is meshed with the travel disk gear through a fixed gear. The other end of the center shaft is meshed with a row of teeth arranged on the L-shaped adjustment plate through a fixed gear.

[0011] The wind head device includes a cylindrical wind box, a wind changing device arranged in the cylindrical wind box, a shaft cylinder distributed on one side of the cylindrical wind box, and a fan-shaped moving plate that establishes a transmission between the shaft cylinder and the wind changing device. The prismatic shaft slides through a prismatic hole opened in the middle of the shaft cylinder, the shaft cylinder is movably sleeved in a protruding through hole set on one side of the cylindrical wind box, the fan-shaped moving plate is fixed on the shaft cylinder, one end of the cylindrical wind box is fixedly connected to the exhaust flat pipe, and the other end is fixedly connected to the air supply pipe, and the integrated shaft passes through a through hole opened on the shell at the axis center of the cylindrical wind box.

[0012] The wind changing device includes a plurality of fan blade groups with a uniform ring arranged outside the integrated shaft, a limit ring that establishes transmission with all the fan blade groups, a positioning group with one end clamped with the limit ring, and a connecting gear fixed at the other end of the positioning group. The connecting gear is meshed and transmission-connected with the arc-shaped rack on the fan-shaped moving plate.

[0013] The positioning group includes a T-shaped fixed plate fixed on the inner wall of the cylindrical wind box, a threaded rod movably sleeved in a through hole opened in the T-shaped fixed plate, and a concave position control plate screwed on one end of the threaded rod. The concave position control plate and the T-shaped fixed plate are in sliding contact. A limiting ring is arranged on the outside of the integrated shaft, and the limiting ring is clamped in a groove opened at one end of the concave position control plate. The other end of the threaded rod is fixedly connected to the guide gear.

[0014] The fan blade group includes a V-shaped plate fixed on the integrated shaft, an L-shaped split plate and a blade shaft supported on the V-shaped plate, and a blade plate fixed at one end of the blade shaft, one end of the L-shaped split plate is vertically fixed on the limit ring, the L-shaped split plate slides through the square hole opened on the V-shaped plate, and a row of teeth is arranged on the L-shaped split plate to mesh with the ring gear fixed on the blade shaft for transmission connection, and the blade shaft is movably sleeved in the circular hole opened on the V-shaped plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The semi-solid lithium-ion battery of the present invention is charged and discharged through a row of battery core plates, and a heat dissipation space is reserved between two adjacent battery core plates. If a battery core plate accidentally overheats during operation, the battery core plates on both sides of the overheated battery core plate will move away, so that the heat dissipation space around the overheated battery core plate is increased, and the heat in the overheated battery core plate can be dissipated in time. At the same time, the air nozzle at one end of the heat dissipation space will strengthen the blowing outward, and more cold air will be injected into the heat dissipation space to assist in cooling the overheated battery core plate.

[0017] 2. The present invention senses and monitors the temperature of the empty layer between adjacent battery core plates through a temperature measuring rod, causes the expansion wheel to rotate through corresponding subsequent transmission, and the temperature of the empty layer space between adjacent battery core plates rises. The rotating expansion wheel pushes the battery core plates on both sides outward, thereby increasing the distance between two adjacent battery core plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a schematic diagram of the structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of the battery core board.

[0020] Figure 3 This is a schematic diagram of the position of the battery core board.

[0021] Figure 4 This is a schematic diagram of the position of the square plate frame.

[0022] Figure 5 This is a schematic diagram of the structure of the temperature measuring rod.

[0023] Figure 6 This is a schematic diagram of the structure of the gas transmission mechanism.

[0024] Figure 7 This is a schematic diagram of the structure of the gas nozzle part.

[0025] Figure 8 This is a schematic diagram of the position of the temperature measuring rod.

[0026] Figure 9 This is a schematic diagram of the structure of the expansion wheel mechanism.

[0027] Figure 10 This is a schematic diagram of the structure of the expansion wheel.

[0028] Figure 11 This is a schematic diagram of the integrated structure of the gear shaft.

[0029] Figure 12 This is a schematic diagram of the structure of the wind head device.

[0030] Figure 13 This is a schematic diagram of the structure of the position adjustment group.

[0031] Figure 14 This is a schematic diagram of the structure of the fan blade group.

[0032] Figure 15 This is a schematic diagram of the structure of the sector-shaped moving plate.

[0033] In the figure: battery box shell 1, battery core plate 2, temperature measuring rod 3, square plate frame 4, guide long rod 5, spring 6, brake plate 7, pull-back spring 8, expansion wheel mechanism 9, gas transmission mechanism 10, unit air hole 11, baffle 12, air nozzle 13, wind head device 14, air supply pipe 15, integrated shaft 16, T-box 17, straight pipe 18, follow-up swing cylinder 19, positioning swing 20, L-shaped pipe 21, exhaust flat pipe 22, expansion wheel 23, gear shaft integration 24, integration Frame 25, L-shaped adjustment plate 26, travel disk gear 27, double control shaft 28, middle shaft 29, longitudinal worm 30, tail drive shaft 31, prismatic shaft 32, side shaft 33, cylindrical wind box 34, shaft cylinder 35, fan-shaped moving plate 36, wind change device 37, fan blade group 38, limit ring 39, adjustment group 40, guide gear 41, concave control plate 42, T-shaped fixed plate 43, threaded rod 44, blade plate 45, blade shaft 46, V-shaped plate 47, L-shaped dividing plate 48. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the technical solutions in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figures 1 to 15 The present invention provides a technical solution: a square semi-solid lithium-ion battery, comprising a battery box shell 1, a row of battery core plates 2 are arranged in the battery box shell 1, a row of temperature measuring rods 3 for detecting temperature between two adjacent battery core plates 2, a square plate frame 4 for supporting the temperature measuring rods 3 is arranged between two adjacent battery core plates 2, a guide long rod 5 vertically arranged at the four corners of the square plate frame 4, a row of springs 6 sleeved on the guide long rod 5, a brake plate 7 vertically contacted by one end of the temperature measuring rod 3, a pull-back spring 8 for applying pressure to the brake plate 7, an expansion wheel mechanism 9 for adjusting the distance between two adjacent battery core plates 2, and a gas transmission mechanism 1 for blowing air to cool the battery core plates 2. 0, the expansion wheel mechanism 9 is transmission-connected to the gas transmission mechanism 10, the guide long rod 5 slides through the through hole opened on the square plate frame 4, the guide long rod 5 also slides through the through hole opened on the fixed baffle 12 on the battery core plate 2, and a spring 6 is supported between the adjacent baffles 12 and the square plate frame 4, the end of the guide long rod 5 is fixed on the battery box shell 1, and the end of the guide long rod 5 is supported between the inner wall of the battery box shell 1 and the baffle 12 by setting a spring 6, one end of the expansion wheel mechanism 9 is transmission-connected to the brake plate 7, the battery core plate 2 is a prior art device, and the battery core plate 2 is a combination of a positive plate, a negative plate, a positive electrode material, a negative electrode material and a semi-solid electrolyte.

[0036] One end of the pull-back spring 8 is fixed on the square plate frame 4, and the other end is fixed on the brake plate 7. The brake plate 7 slides through the plate hole opened on the square plate frame 4 by setting a convex plate. A unit air hole 11 for heat dissipation and exhaust is opened on the shell of one side of the battery box shell 1. One end of the temperature measuring rod 3 is inserted into the circular groove opened on the frame body on one side of the square plate frame 4, and the other end of the temperature measuring rod 3 passes through the through hole opened on the frame body on the other side of the square plate frame 4, and the circular groove and the through hole on the square plate frame 4 reserve space for the temperature measuring rod 3 to expand due to heat.

[0037] refer to Figure 6 It is understood that the air delivery mechanism 10 includes an integrated shaft 16, a row of wind head devices 14 driven by the integrated shaft 16, an air supply pipe 15 connected to one end of each wind head device 14, and a plurality of air nozzles 13 connected to the other end of the wind head device 14. One end of the air supply pipe 15 extends to the outside after passing through the shell of the battery box shell 1. Each wind head device 14 is correspondingly connected to an expansion wheel mechanism 9 in transmission, and the air supply pipe 15 is externally connected to the cold air supply mechanism in the prior art.

[0038] refer to Figure 7 It is understood that the air nozzle part 13 includes an exhaust flat pipe 22 with one end connected to the wind head device 14, an L-shaped tube 21 fixedly connected to the other end of the exhaust flat pipe 22, a positioning swing 20 hingedly connected to the L-shaped tube 21 at one end, a follower swing cylinder 19 slidably inserted into the other end of the positioning swing 20, a straight pipe 18 hingedly connected to one end of the follower swing cylinder 19, and a T-shaped box 17 fixedly connected to one end of the straight pipe 18, the T-shaped box 17 is fixedly connected to the bracket provided on the square plate frame 4 to move synchronously with the square plate frame 4, and an exhaust hole is opened on the T-shaped box 17 to blow air between two adjacent battery core plates 2 to cool down.

[0039] refer to Figure 9 It is understood that the expansion wheel mechanism 9 includes an L-shaped adjustment plate 26 with one end fixedly connected to the brake plate 7, a gear shaft integration 24 driven by the other end of the L-shaped adjustment plate 26, an integrated frame 25 supporting the gear shaft integration 24, and an expansion wheel 23 driven and controlled by the gear shaft integration 24. The gear shaft integration 24 is also connected to the wind head device 14 in transmission. One end of the integrated frame 25 is fixed on the square plate frame 4. The L-shaped adjustment plate 26 slides through the plate hole opened on the integrated frame 25. The expansion wheel 23 is a combination of two cam plates evenly arranged in an annular shape. The expansion wheel 23 pushes the battery core plates 2 on both sides away from each other by rotating.

[0040] A row of battery core plates 2 are distributed in the battery box shell 1, and a heat dissipation space is reserved between two adjacent battery core plates 2. Between each heat dissipation space, there is a temperature measuring rod 3 for detecting heat and an expansion wheel 23 for adjusting the distance between two adjacent battery core plates 2. Figure 10, if a battery core plate 2 accidentally overheats during operation, the temperature of the heat dissipation empty layer on both sides rises, and then the corresponding expansion wheel 23 rotates. When the expansion wheel 23 rotates, the outer wall of the expansion wheel 23 pushes the battery core plates 2 on both sides, thereby increasing the heat dissipation empty layer space on both sides of the overheated battery core plate 2, and the heat emitted by the overheated battery core plate 2 can be diffused in time, while the remaining heat dissipation empty layer space is reduced, and the remaining expansion wheel 23 does not rotate, and a space is left between the battery core plates 2 on both sides for the adjacent battery core plates 2 to approach. In summary, a row of battery core plates 2 of the present invention is in an active state in the battery box shell 1. Under the elastic support of the spring 6, a normal row of battery core plates 2 is evenly arranged. When a single battery core plate 2 accidentally overheats, the battery core plates 2 on both sides of the overheated battery core plate 2 will move away, thus leaving enough heat dissipation space for the overheated battery core plate 2.

[0041] refer to Figure 11 It is understood that the gear shaft integration 24 includes a double control shaft 28, a center shaft 29, a longitudinal worm 30, a tail drive shaft 31 and a side shaft 33 supported by an integrated frame 25, and the integrated frame 25 also includes a travel plate gear 27 fixed at one end of the center shaft 29, and a prism shaft 32 coaxially fixed with the tail drive shaft 31. The prism shaft 32 and the tail drive shaft 31 are connected at the joint by setting a bevel gear to mesh with the bevel gear fixed at one end of the double control shaft 28. The other end of the double control shaft 28 is fixed to the middle of the expansion wheel 23, and the double control shaft 28 is also connected by a fixed cylinder gear. The double control shaft 28, the middle shaft 29, the longitudinal worm 30, the tail drive shaft 31 and the side shaft 33 are respectively movably connected in different through holes opened on the integrated frame 25.

[0042] The wind head device 14 includes a cylindrical wind box 34, a wind changing device 37 arranged in the cylindrical wind box 34, a shaft cylinder 35 distributed on one side of the cylindrical wind box 34, and a fan-shaped movable plate 36 for establishing transmission between the shaft cylinder 35 and the wind changing device 37. The prismatic shaft 32 slides through the prismatic hole opened in the middle of the shaft cylinder 35, and the shaft cylinder 35 is movably sleeved in the convex through hole set on one side of the cylindrical wind box 34. The fan-shaped movable plate 36 is fixed on the shaft cylinder 35. One end of the cylindrical wind box 34 is fixedly connected to the exhaust flat pipe 22, and the other end is fixedly connected to the air supply pipe 15. The integrated shaft 16 passes through the through hole opened on the shell at the axis of the cylindrical wind box 34. Figure 12 It is understood that the rotation of the prism shaft 32 can drive the shaft tube 35 to rotate, and the axial movement of the prism shaft 32 will not affect the wind head device 14. The spatial position of the wind head device 14 remains unchanged, and the expansion wheel mechanism 9 as a whole can be translated in space along with the square plate frame 4.

[0043] The wind changing device 37 includes a plurality of blade groups 38 uniformly arranged on the outside of the integrated shaft 16, a limit ring 39 that establishes transmission with all the blade groups 38, a positioning group 40 with one end engaged with the limit ring 39, and a guide gear 41 fixed at the other end of the positioning group 40. The guide gear 41 is meshed with the arc-shaped rack on the fan-shaped moving plate 36 for transmission connection.

[0044] The positioning group 40 includes a T-shaped fixed plate 43 fixed on the inner wall of the cylindrical wind box 34, a threaded rod 44 movably sleeved in a through hole opened on the T-shaped fixed plate 43, and a concave positioning plate 42 screwed on one end of the threaded rod 44. The concave positioning plate 42 and the T-shaped fixed plate 43 are in sliding contact. The limiting ring 39 is arranged on the outside of the integrated shaft 16, and the limiting ring 39 is stuck in a groove opened at one end of the concave positioning plate 42. The other end of the threaded rod 44 is fixedly connected to the guiding gear 41.

[0045] The fan blade group 38 includes a V-shaped plate 47 fixed on the integrated shaft 16, an L-shaped split plate 48 and a blade shaft 46 supported on the V-shaped plate 47, and a blade plate 45 fixed at one end of the blade shaft 46. One end of the L-shaped split plate 48 is vertically fixed on the limit ring 39. The L-shaped split plate 48 slides through the square hole opened on the V-shaped plate 47, and a row of teeth is set on the L-shaped split plate 48 to engage and transmit with the ring gear fixed on the blade shaft 46. The blade shaft 46 is movably sleeved in the circular hole opened on the V-shaped plate 47.

[0046] One end of the integrated shaft 16 is externally connected to a driving mechanism in the prior art. The rotation of the integrated shaft 16 causes cold air to be transported in all the cylindrical wind boxes 34. Specifically, the integrated shaft 16 drives the fan blade group 38 to move in a circle, provides power for the cold air transportation, and controls the cold air transportation force. The cold air in the cold air supply mechanism is transported to the air supply pipe 15, and then transported to the exhaust flat pipe 22 through the cylindrical wind box 34, and then transported to the positioning swing 20 through the L-shaped pipe 21, and then transported to the straight pipe 18 through the follow-up swing cylinder 19, and then discharged through the T-box 17. The cold air is blown between two adjacent battery core plates 2 and neutralized with the hot air in the heat dissipation air layer, so that a row of battery core plates 2 can be effectively cooled.

[0047] The T-shaped box 17 moves synchronously with the square frame 4, and the T-shaped box 17 always blows air between two adjacent battery core plates 2. Figure 5 Each battery core plate 2 is fixed with a baffle 12 at the four corners, two springs 6 are clamped between two horizontally adjacent baffles 12, and a square plate frame 4 is padded in the middle of the two springs 6, so that the square plate frame 4 is always distributed in the middle position of two adjacent battery core plates 2, and the T-box 17 is controlled to blow air to the middle of two adjacent battery core plates 2.

[0048] The adjustment process from the temperature rise of the heat dissipation space to the increase in the distance between the two adjacent battery core plates 2: the overheated temperature causes the temperature measuring rod 3 to expand and extend. Any temperature measuring rod 3 pushes the brake plate 7, which will cause the brake plate 7 to drive the L-shaped adjustment plate 26 to translate, and then the middle shaft 29 rotates to drive the travel disk gear 27, and then the longitudinal worm 30 is driven through the side shaft 33, and then the double control shaft 28 rotates to drive the expansion wheel 23, and the expansion wheel 23 is pushed outward to push the battery core plates 2 on both sides, so that the two battery core plates 2 are separated from each other. In addition, the double control shaft 28 also drives the tail drive shaft 31, and then the prism shaft 32 rotates to drive the shaft cylinder 35, and then the fan-shaped moving plate 36 swings to drive the guide gear 41 to rotate, and the threaded rod The rotation of 44 causes the displacement of the concave control plate 42, and then the axial movement of the limit ring 39 drives all the L-shaped partition plates 48. The displacement of the L-shaped partition plates 48 drives the blade shaft 46 to rotate, causing the blade plate 45 to flip at a small angle. As mentioned earlier, the integrated shaft 16 rotates at a constant speed to drive the fan blade group 38 to move around, and the cylindrical wind box 34 conveys ventilation inside. The blade 45 is adjusted and flipped on this basis, so that the wind force transmission in the cylindrical wind box 34 is enhanced, and the distance between the two adjacent battery core plates 2 is increased, which will be accompanied by the corresponding T-box 17. The external blowing of cold air is enhanced, so that the cold air can fully neutralize the heat emitted by the overheated battery core plate 2, thereby achieving a further cooling effect.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A square-shaped semi-solid state lithium-ion battery, comprising a battery box shell (1), characterized in that: A row of battery core plates (2), a row of temperature measuring rods (3) for detecting temperature between adjacent two battery core plates (2), a square plate frame (4) for supporting the temperature measuring rods (3) between adjacent two battery core plates (2), guiding long rods (5) vertically arranged at the four corners of the square plate frame (4), a row of springs (6) sleeved on the guiding long rods (5), a braking plate (7) vertically contacted at one end of the temperature measuring rod (3), a pulling-back elastic piece (8) for pressing the braking plate (7), an expansion wheel mechanism (9) for adjusting the distance between adjacent two battery core plates (2), and an air supply mechanism (10) for blowing air to cool the battery core plates (2) are arranged in the battery box shell (1). The expansion wheel mechanism (9) and the air supply mechanism (10) are in transmission connection. The guiding long rods (5) slide through through holes formed in the square plate frame (4), and the guiding long rods (5) also slide through through holes formed in fixed blocking plates (12) on the battery core plates (2). Springs (6) are supported between adjacent blocking plates (12) and the square plate frame (4). The ends of the guiding long rods (5) are fixed on the battery box shell (1), and the ends of the guiding long rods (5) are supported between the inner wall of the battery box shell (1) and the blocking plates (12) by arranging springs (6). One end of the expansion wheel mechanism (9) is in transmission connection with the braking plate (7). One end of the pulling-back elastic piece (8) is fixed on the square plate frame (4), and the other end is fixed on the braking plate (7). The braking plate (7) slides through a plate hole formed in the square plate frame (4) by arranging a convex plate. Unit air holes (11) for heat dissipation and exhaust are formed in one side shell of the battery box shell (1). One end of the temperature measuring rod (3) is inserted into a circular groove formed in one side frame body of the square plate frame (4), and the other end of the temperature measuring rod (3) passes through a through hole formed in the other side frame body of the square plate frame (4). Spaces for the temperature measuring rod (3) to expand due to heat are left in both the circular groove and the through hole on the square plate frame (4). The air supply mechanism (10) includes an integrated shaft (16), a row of air head devices (14) driven by the integrated shaft (16), an air supply pipe (15) communicated with one end of each air head device (14), and a plurality of air nozzle parts (13) communicated with the other end of the air head device (14). One end of the air supply pipe (15) extends to the outside after passing through the shell of the battery box shell (1). Each air head device (14) is correspondingly in transmission connection with an expansion wheel mechanism (9). The air nozzle part (13) includes an exhaust flat pipe (22) connected with one end of the air head device (14), an L-shaped pipe (21) fixedly communicated with the other end of the exhaust flat pipe (22), a positioning swing (20) hingedly communicated with one end of the L-shaped pipe (21), a follower swing cylinder (19) slidably inserted into the other end of the positioning swing (20), a straight pipe (18) hingedly communicated with one end of the follower swing cylinder (19), and a T-shaped box (17) fixedly communicated with one end of the straight pipe (18). The T-shaped box (17) is fixedly connected with a bracket arranged on the square plate frame (4) to move synchronously with the square plate frame (4), and an exhaust hole is formed in the T-shaped box (17) to blow air for cooling between adjacent two battery core plates (2).

2. The square-shaped semi-solid state lithium ion battery according to claim 1, wherein: The expansion wheel mechanism (9) comprises an L-shaped adjustment plate (26) having one end fixedly connected to the brake plate (7), a gear shaft assembly (24) driven by the other end of the L-shaped adjustment plate (26), an integrated frame (25) supporting the gear shaft assembly (24), and an expansion wheel (23) driven and controlled by the gear shaft assembly (24), wherein the gear shaft assembly (24) is also in driving connection with the wind head device (14), wherein one end of the integrated frame (25) is fixed to the square plate frame (4), wherein the L-shaped adjustment plate (26) slides through a plate hole provided on the integrated frame (25), and wherein the expansion wheel (23) is a combination of two cam plates evenly arranged in an annular manner, wherein the expansion wheel (23) pushes the battery core plates (2) on both sides away from each other by rotating.

3. A square semi-solid state lithium ion battery according to claim 2, characterized in that: The gear shaft assembly (24) includes a double control shaft (28), a center shaft (29), a longitudinal worm (30), a tail drive shaft (31) and a side shaft (33) supported by an integrated frame (25). The integrated frame (25) also includes a travel plate gear (27) fixed at one end of the center shaft (29), and a prism shaft (32) coaxially fixed to the tail drive shaft (31). The prism shaft (32) and the tail drive shaft (31) are connected at a joint by a bevel gear to mesh with the bevel gear fixed at one end of the double control shaft (28). The other end of the double control shaft (28) is fixed to the middle of the expansion wheel (23). The double control shaft (28) is also connected to the spiral teeth on the longitudinal worm (30) through a fixed cylindrical gear. One end of the longitudinal worm (30) is connected to the bevel gear fixed to one end of the side shaft (33) through a fixed bevel gear. The other end of the side shaft (33) is connected to the travel plate gear (27) through a fixed gear. The other end of the middle shaft (29) is connected to the row of teeth provided on the L-shaped adjustment plate (26) through a fixed gear.

4. The square-shaped semi-solid state lithium ion battery according to claim 3, characterized in that: The wind head device (14) comprises a cylindrical wind box (34), a wind changing device (37) arranged in the cylindrical wind box (34), a shaft cylinder (35) distributed on one side of the cylindrical wind box (34), and a fan-shaped movable plate (36) for establishing transmission between the shaft cylinder (35) and the wind changing device (37); the prism shaft (32) slides through a prism hole opened in the middle of the shaft cylinder (35); the shaft cylinder (35) is movably sleeved in a convex through hole set on one side of the cylindrical wind box (34); the fan-shaped movable plate (36) is fixed on the shaft cylinder (35); one end of the cylindrical wind box (34) is fixedly connected to the exhaust flat pipe (22), and the other end is fixedly connected to the air supply pipe (15); and the integrated shaft (16) passes through a through hole opened on the shell at the axis center of the cylindrical wind box (34).

5. A square-shaped semi-solid state lithium ion battery according to claim 4, characterized in that: The wind changing device (37) comprises a plurality of blade groups (38) uniformly arranged outside the integrated shaft (16), a limit ring (39) for establishing transmission with all the blade groups (38), a positioning group (40) with one end engaged with the limit ring (39), and a guide gear (41) fixed to the other end of the positioning group (40), wherein the guide gear (41) is meshedly connected to an arc-shaped rack on the fan-shaped moving plate (36) for transmission.

6. The square-shaped semi-solid state lithium ion battery according to claim 5, wherein: The positioning group (40) comprises a T-shaped fixed plate (43) fixed on the inner wall of the cylindrical wind box (34), a threaded rod (44) movably sleeved in a through hole provided in the T-shaped fixed plate (43), and a concave position control plate (42) threadedly connected to one end of the threaded rod (44), the concave position control plate (42) and the T-shaped fixed plate (43) being in sliding contact, a limiting ring (39) being arranged outside the integrated shaft (16), and the limiting ring (39) being clamped in a groove provided at one end of the concave position control plate (42), and the other end of the threaded rod (44) being fixedly connected to the guide gear (41).

7. A square-shaped semi-solid state lithium ion battery according to claim 5, characterized in that: The fan blade assembly (38) comprises a V-shaped plate (47) fixed on the integrated shaft (16), an L-shaped split plate (48) and a blade shaft (46) supported on the V-shaped plate (47), and a blade plate (45) fixed at one end of the blade shaft (46); one end of the L-shaped split plate (48) is vertically fixed on the limit ring (39); the L-shaped split plate (48) slides through a square hole opened on the V-shaped plate (47); and a row of teeth is provided on the L-shaped split plate (48) to mesh with a ring gear fixed on the blade shaft (46) for transmission connection; the blade shaft (46) is movably sleeved in the circular hole opened on the V-shaped plate (47).

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