Power lithium ion battery module structure of new energy automobile

Abstract

The invention discloses a new energy automobile power lithium ion battery module structure, and belongs to the technical field of automobile power lithium ion batteries, the new energy automobile power lithium ion battery module structure comprises a protection base, the protection base is mounted on a new energy automobile, and a battery module mounting box is fixedly mounted on the protection base. When the running speed of the new energy automobile reaches a specified value, air enters the air inlet, the air is distributed into the side face heat dissipation cavity, the top heat dissipation cavity and the bottom heat dissipation cavity through the butt joint groove, and when the air enters the side face heat dissipation cavity, the top heat dissipation cavity and the bottom heat dissipation cavity, heat dissipated by the lithium battery module is conveyed to the conveying cavity; the heat can be exhausted through the exhaust port after entering the conveying cavity, so that the lithium battery module can be conveniently cooled through external air when the new energy automobile runs at a high speed, and the energy required for cooling the lithium battery module can be greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive power lithium-ion batteries, and in particular to a new energy automotive power lithium-ion battery module structure. Background Art

[0002] Lithium-ion power battery is a high-energy battery for new energy vehicles. The negative electrode of this battery is made of graphite and other materials, and the positive electrode is made of lithium iron phosphate, lithium cobalt oxide, lithium titanate, etc. Due to its advantages of high energy, high battery voltage, wide operating temperature range, and long storage life, it has been widely used in various products on the market. With the development of the new energy vehicle industry, the performance requirements for new energy batteries are getting higher and higher, and the safety requirements are also increasing; on the basis of ensuring safety, the performance improvement of the battery is a key indicator for battery evaluation. The impact of temperature on the battery during the use of the battery is a very critical factor, so the battery needs to be cooled during use to avoid battery temperature imbalance affecting the safety of the car.

[0003] The existing patent number CN114421086B discloses a heat dissipation structure of a lithium battery pack, including a battery bottom fixing plate, a 48V hybrid battery, an airflow driving device and a battery hood. The 48V hybrid battery is mounted on the battery bottom fixing plate, the airflow driving device is sleeved on the outside of the 48V hybrid battery, the bottom of the airflow driving device is connected to the battery bottom fixing plate, the battery hood covers the periphery of the 48V hybrid battery and the airflow driving device, and the bottom of the battery hood is connected to the battery bottom fixing plate. The airflow driving device includes an airflow driving plate and a spring, the airflow driving plate is sleeved on the periphery of the 48V hybrid battery, one end of the spring is connected to the battery bottom fixing plate, and the other end of the spring is connected to the airflow driving plate. The invention uses the inertial force during the movement of the whole vehicle through structural design to make the structural airflow driving plate inside the battery move, drive the internal air flow, thereby playing a role in cooling the battery, and no other energy is required in this process. The invention also discloses a heat dissipation method for a lithium battery pack. However, the vehicle usually has a large inertial force only when it brakes suddenly or bumps during driving, while the inertial force is smaller during stable driving. Therefore, the heat dissipation structure in the invention is not stable and the heat dissipation effect is poor. Summary of the invention

[0004] The purpose of the present invention is to provide a new energy vehicle power lithium-ion battery module structure to solve the problem that the current new energy vehicle power lithium-ion battery module structure itself has limited application scope as mentioned in the above background technology.

[0005] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme: A new energy vehicle power lithium-ion battery module structure provided by the present invention comprises a protective base, which is installed on a new energy vehicle, a battery module installation box is fixedly installed on the protective base, a top cover is fixedly installed on the top of the battery module installation box by bolts, a power connector is fixedly installed on the left side of the battery module installation box, a plurality of battery installation cavities are opened inside the battery module installation box, a lithium battery module is fixedly installed inside the battery installation cavity, a power line box is fixedly installed inside the battery module installation box, and two ends of a power line connected inside the power line box are respectively connected to the lithium battery module and the power connector, The battery module installation box also includes air inlets fixedly installed at the front and rear of the battery module installation box, and a docking slot provided on the surface of the battery module installation box. A side heat dissipation cavity is provided inside the battery module installation box near the docking slot, a top heat dissipation cavity is provided at the bottom of the top cover near the docking slot, and a bottom heat dissipation cavity is provided at the top of the protective base near the docking slot. A conveying cavity is provided inside the battery module installation box near the power line box, and an exhaust port is provided on the right side of the battery module installation box near the conveying cavity. When the driving speed of the new energy vehicle reaches a specified value, air will enter the air inlet, and the air will be diverted to the side heat dissipation cavity, the top heat dissipation cavity and the bottom heat dissipation cavity through the docking slot to convey the heat emitted by the lithium battery module to the conveying cavity. After the heat enters the conveying cavity, it can be discharged through the exhaust port. The air inlet further includes four groups of openings extending through the side of the air inlet, and a sealing plate rotatably mounted inside the openings, wherein the sealing plate can be opened by blowing air, and after the sealing plate is opened, air can enter the interior of the battery module installation box through the openings; The side heat dissipation cavity further comprises a movable heat dissipation fin movably mounted inside the side heat dissipation cavity, and a heat dissipation plate fixedly mounted on the side of the movable heat dissipation fin. When the top cover is mounted on the battery module mounting box, the movable heat dissipation fin and the heat dissipation plate can be moved laterally in the side heat dissipation cavity by pressing. When the movable heat dissipation fin moves to the side of the lithium battery module, it can be clamped and fixed, and at the same time, it can absorb the heat emitted by the lithium battery module when it is working. The exhaust port also includes a fan fixedly mounted on the side of the exhaust port, and a cylinder mounted on the protective base. When the running speed of the new energy vehicle is lower than a specified value, the fan and the cylinder work simultaneously. When the cylinder is working, several groups of sealing plates can be opened simultaneously. After the sealing plates are opened, the fan can work to dissipate heat for the lithium battery module.

[0006] Preferably, the battery installation cavities are provided in two rows, and each row of the battery installation cavities is provided with six battery installation cavities. The docking grooves are provided in several groups, and the several groups of docking grooves respectively correspond to a group of side heat dissipation cavity, top heat dissipation cavity and bottom heat dissipation cavity. The side heat dissipation cavity, top heat dissipation cavity and bottom heat dissipation cavity are connected to the conveying cavity, and a complete heat dissipation channel is formed between the air inlet, the docking groove, the side heat dissipation cavity, the top heat dissipation cavity, the bottom heat dissipation cavity, the conveying cavity and the exhaust port.

[0007] Preferably, the four groups of openings correspond to a group of docking grooves respectively, and extrusion grooves are provided on the inner sides of the openings located at the upper part and the bottom part of the air inlet. A rotating rod is rotatably connected through the extrusion grooves, and the side of the rotating rod passes through the interior of the opening located in the middle part of the air inlet.

[0008] Preferably, one end of a torsion spring is connected to the surface of the rotating rod, and the other end of the torsion spring is fixedly connected to the inside of the extrusion groove. Four groups of sealing plates are fixed on the rotating rod, and the four groups of sealing plates correspond one-to-one to four groups of openings. A filter is fixedly installed on the side of the air inlet close to the opening, and the filter is arc-shaped.

[0009] Preferably, four groups of diverter plates are fixedly installed inside the docking groove, and the four groups of diverter plates are distributed inside the docking groove at equal distances.

[0010] Preferably, an operating groove 1 is opened on the inner side of the side heat dissipation cavity, a screw rod is rotatably installed inside the operating groove 1, and bidirectional screw rods are rotatably installed inside the operating grooves 1 of two adjacent side heat dissipation cavities, and gears are fixedly installed on the screw rods and the bidirectional screw rods.

[0011] Preferably, the battery module installation box is provided with a slot near the top of the operating slot 1, a rack matching the gear is movably connected inside the slot, and the top end of the rack is fixedly mounted on the bottom of the top cover.

[0012] Preferably, a group of internal threaded sliders are threadedly connected on the screw rod, two groups of internal threaded sliders are threadedly connected on the bidirectional screw rod, a heat sink plate is fixedly connected between the internal threaded sliders, and a movable groove is opened through the inside of the side heat dissipation cavity near the bottom heat dissipation cavity.

[0013] Preferably, a movable cooling fin is movably installed inside the movable groove, a movable groove is opened on the other side of the heat sink, a cooling spring is fixedly connected inside the movable groove, a fixed cooling fin is fixedly installed through the bottom of the top heat dissipation cavity, and a fixed cooling fin is fixedly installed through the top of the bottom heat dissipation cavity.

[0014] Preferably, a wind speed sensor is installed at the windward outlet of the new energy vehicle, a push plate is fixedly installed at the output end of the cylinder, an operating slot 2 is opened inside the air inlet, one end of a rotating rod is connected to the inside of the operating slot 2, a push rod is movably connected through the operating slot 2, one end of the push rod is fixedly connected to the side of the push plate, the side of the push rod close to the rotating rod is fixedly connected to a top block, and the side of the rotating rod close to the top block is fixedly connected to a rotating plate.

[0015] Compared with the prior art, one or more of the above technical solutions have the following beneficial effects: 1. When the driving speed of the new energy vehicle reaches the specified value, the air will enter the air inlet, and the air will be diverted to the side heat dissipation cavity, the top heat dissipation cavity and the bottom heat dissipation cavity through the docking groove. When the air enters the side heat dissipation cavity, the top heat dissipation cavity and the bottom heat dissipation cavity, the heat emitted by the lithium battery module will be transported to the transport cavity. After the heat enters the transport cavity, it can be discharged through the exhaust port, which is convenient for the new energy vehicle to dissipate the heat of the lithium battery module through the external air when driving at high speed, thereby greatly reducing the energy required for the heat dissipation of the lithium battery module; 2. When the vehicle speed reaches the specified speed, the sealing plate can be blown open. When the sealing plate is opened, air can enter the inside of the four groups of openings, and enter the inside of the corresponding docking grooves through the four groups of openings. When the air enters the docking groove, it can be evenly transported to the inside of the side heat dissipation cavity, the top heat dissipation cavity and the bottom heat dissipation cavity through the diverter plate for heat dissipation, so that the air can be evenly distributed; 3. The lithium battery module can be stably placed inside the battery installation cavity when in use. The distance between the battery installation cavity and the lithium battery module is such that the hand can be stably inserted, so that the lithium battery module can be easily taken out when it needs to be repaired. When the lithium battery module is in use, the rack can be inserted into the slot through the installation between the top cover and the battery module installation box. When the rack is inserted, it can drive the gear, the bidirectional screw rod and the screw rod to rotate. When the bidirectional screw rod and the screw rod rotate, they can drive the internal thread slider, the heat sink and the movable heat sink fins to move. When the heat sink and the movable heat sink fins move, the lithium battery module can be clamped. After the lithium battery module is clamped, it can be stably used, which is convenient for the lithium battery module to be stably used; 4. When the top cover is assembled with the battery module installation box, the movable heat dissipation fins and the fixed heat dissipation fins can be used to fix and clamp the lithium battery module to form a suspended state, which is beneficial to the heat dissipation. At the same time, after the fixed heat dissipation fins and the movable heat dissipation fins fix and clamp the lithium battery module, the heat emitted during operation can be conducted to the inside of the side heat dissipation cavity, the top heat dissipation cavity and the bottom heat dissipation cavity for heat dissipation, which makes it easier for the air to dissipate the heat of the lithium battery module when passing through the inside of the battery module installation box; 5. A wind speed sensor is provided to monitor the speed of the new energy vehicle. When the speed is lower than the specified value, the wind speed sensor can send instructions to the fan and the cylinder. When the cylinder is working, several sets of sealing plates can be opened through the cooperation of the push plate, the push rod, the top block, the rotating plate and the rotating rod. After the sealing plate is opened, the suction force generated by the fan when it is working draws the external air through the air inlet to the interior of the battery module installation box to dissipate the heat of the lithium battery module, so that the lithium battery module can be used in different heat dissipation methods at high and low speeds in new energy vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional explosion structure of the present invention; Figure 3 It is a schematic diagram of a partial cross-sectional structure of the present invention in a front view; Figure 4 It is a structural schematic diagram of a three-dimensional partial cross-sectional perspective of the present invention; Figure 5 It is a structural schematic diagram of the present invention from a second perspective of a three-dimensional partial cross-section; Figure 6 It is a schematic diagram of the cross-sectional structure of the air inlet in the present invention from a top view; Figure 7 This is a structural schematic diagram of a heat sink of the present invention from a three-dimensional perspective; Figure 8 This is a schematic diagram of the structure of the heat sink of the present invention from a second perspective; Fig. 9 It is a schematic diagram of the heat dissipation process structure of the present invention; Fig.10 The present invention Figure 4 A schematic diagram of the enlarged structure of part A; Fig.11 The present invention Figure 4 A schematic diagram of the enlarged structure of part B; Fig.12 The present invention Figure 4 A schematic diagram of the enlarged structure of part C; Fig.13 The present invention Figure 4 A schematic diagram of the enlarged structure of the D section; In the figure: 100, protective base; 200, battery module installation box; 210, air inlet; 211, opening; 212, extrusion groove; 213, rotating rod; 214, torsion spring; 215, sealing plate; 216, filter; 220, docking groove; 221, diverter plate; 230, side heat dissipation cavity; 231, operation groove 1; 232, two-way screw rod; 233, screw rod; 234, gear; 235, slot; 236, rack; 237, internal thread slider; 238, heat dissipation plate; 239, movable heat dissipation fin; 231 0. Mobile slot; 2311. Heat dissipation spring; 2312. Movable slot; 2313. Fixed heat dissipation fin; 240. Top heat dissipation cavity; 250. Bottom heat dissipation cavity; 260. Conveying cavity; 270. Exhaust port; 271. Wind speed sensor; 272. Fan; 273. Cylinder; 274. Push plate; 275. Operation slot 2; 276. Push rod; 277. Top block; 278. Rotating plate; 300. Top cover; 400. Power connector; 500. Battery installation cavity; 600. Lithium battery module; 700. Power cord box. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.

[0019] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0020] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0021] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0022] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0023] See also Figure 1-Figure 3 The present invention provides an embodiment: a new energy vehicle power lithium-ion battery module structure, including a protective base 100, the protective base 100 is installed on the new energy vehicle, a battery module installation box 200 is fixedly installed on the protective base 100, a top cover 300 is fixedly installed on the top of the battery module installation box 200 by bolts, a power connector 400 is fixedly installed on the left side of the battery module installation box 200, a plurality of battery installation cavities 500 are opened inside the battery module installation box 200, a lithium battery module 600 is fixedly installed inside the battery installation cavity 500, a power line box 700 is fixedly installed inside the battery module installation box 200, and two ends of a power line connected inside the power line box 700 are respectively connected to the lithium battery module 600 and the power connector 400.

[0024] It should be understood that before use, the lithium battery module 600 needs to be placed inside the battery installation cavity 500 and connected to the power cord inside the power cord box 700. After the lithium battery module 600 is installed, the top cover 300 can be connected to the top of the battery module installation box 200 by bolts. After the top cover 300 is installed, the lithium battery module 600 can be fixedly installed. After the lithium battery module 600 is installed, the protective base 100 can be installed on the frame of the new energy vehicle, and the power connector 400 can be connected to the new energy vehicle.

[0025] like Figure 1-Figure 6 and Fig.10 As shown, the battery module installation box 200 also includes an air inlet 210 fixedly installed at the front and rear of the battery module installation box 200, and a docking slot 220 opened on the surface of the battery module installation box 200, a side heat dissipation cavity 230 is opened inside the battery module installation box 200 near the docking slot 220, a top heat dissipation cavity 240 is opened near the bottom of the docking slot 220 of the top cover 300, a bottom heat dissipation cavity 250 is opened near the top of the docking slot 220 of the protective base 100, a conveying cavity 260 is opened inside the battery module installation box 200 near the power line box 700, and an exhaust port 270 is opened on the right side of the battery module installation box 200 near the conveying cavity 260. When the driving speed of the new energy vehicle reaches a specified value, air will enter the air inlet 210, and the air will be diverted into the side heat dissipation cavity 230, the top heat dissipation cavity 240 and the bottom heat dissipation cavity through the docking slot 220. The heat emitted by the lithium battery module 600 is transported to the conveying chamber 260 inside 250. After the heat enters the conveying chamber 260, it can be discharged through the exhaust port 270. The battery installation chamber 500 is provided with two rows, and each of the two rows of battery installation chambers 500 is provided with six. The docking slot 220 is provided with several groups. Four groups of branch plates 221 are fixedly installed inside the docking slot 220. The four groups of branch plates 221 are distributed inside the docking slot 220 at equal distances. Several groups of docking slots 220 correspond to a group of side heat dissipation chambers 230, top heat dissipation chambers 240 and bottom heat dissipation chambers 250 respectively. The side heat dissipation chambers 230, the top heat dissipation chambers 240, and the bottom heat dissipation chambers 250 are connected to the conveying chamber 260. A complete heat dissipation channel is formed between the air inlet 210, the docking slot 220, the side heat dissipation chambers 230, the top heat dissipation chambers 240, the bottom heat dissipation chambers 250, the conveying chamber 260 and the exhaust port 270.

[0026] It can be imagined that when the driving speed of the new energy vehicle reaches a specified value, the air will enter the air inlet 210. After entering the air inlet 210, the air can be transported to the inside of the docking slot 220. The docking slot 220 can evenly divert the air to the side heat dissipation cavity 230, the top heat dissipation cavity 240 and the bottom heat dissipation cavity 250 through the internal diverter plate 221. When the air enters the side heat dissipation cavity 230, the top heat dissipation cavity 240 and the bottom heat dissipation cavity 250, the heat emitted by the lithium battery module 600 can be transported to the transport cavity 260. After entering the transport cavity 260, the heat can be discharged through the exhaust port 270.

[0027] like Figure 1-Figure 3 , Figure 5 , Figure 6 , Fig.10 and Fig.11As shown, the air inlet 210 also includes four groups of openings 211 extending through the side of the air inlet 210, and a sealing plate 215 rotatably mounted inside the opening 211. The sealing plate 215 can be opened by blowing air. After the sealing plate 215 is opened, air can enter the interior of the battery module installation box 200 through the opening 211. The four groups of openings 211 correspond to a group of docking grooves 220 respectively. The inner sides of the openings 211 at the top and bottom of the air inlet 210 are both provided with extrusion grooves 212. 2 is rotatably connected with a rotating rod 213, the side of the rotating rod 213 passes through the inside of the opening 211 located in the middle of the air inlet 210, the surface of the rotating rod 213 is connected to one end of a torsion spring 214, and the other end of the torsion spring 214 is fixedly connected to the inside of the extrusion groove 212, four groups of sealing plates 215 are fixed on the rotating rod 213, and the four groups of sealing plates 215 correspond to the four groups of openings 211 one by one, and a filter screen 216 is fixedly installed on the side of the air inlet 210 close to the opening 211, and the filter screen 216 is arc-shaped.

[0028] It is worth noting that when the speed of the new energy vehicle reaches a specified value, the wind will be able to blow the sealing plate 215. When the sealing plate 215 is blown, it can drive the rotating rod 213 to rotate. When the rotating rod 213 rotates, it can rotate inside the extrusion groove 212. When the rotating rod 213 rotates, it can drive the torsion spring 214 to twist. When the sealing plate 215 is fully opened, air can enter the interior of the opening 211, and enter the interior of the battery module installation box 200 through the opening 211 to dissipate heat for the lithium battery module 600. When the air enters the interior of the opening 211, the filter 216 can filter the impurities inside the air. When the speed of the new energy vehicle is lower than the specified value, the sealing plate 215 can be reset by the torsion spring 214's own torque. After the sealing plate 215 is reset, it can protect the heat dissipation cavity of the new energy vehicle.

[0029] like Figure 1-Figure 3 , Figure 5 , Figure 7 , Figure 8 , Fig.12 and Fig.13As shown, the side heat dissipation cavity 230 also includes a movable heat dissipation fin 239 movably installed inside the side heat dissipation cavity 230, and a heat dissipation plate 238 fixedly installed on the side of the movable heat dissipation fin 239. When the top cover 300 is installed with the battery module mounting box 200, the movable heat dissipation fin 239 and the heat dissipation plate 238 can be moved laterally in the side heat dissipation cavity 230 by pressing. When the movable heat dissipation fin 239 moves to the side of the lithium battery module 600, it can be clamped and fixed, and at the same time, it can absorb the heat emitted by the lithium battery module 600 when working. An operating groove 231 is opened on the inner side of the side heat dissipation cavity 230, and a screw rod 233 is rotatably installed inside the operating groove 231. A bidirectional screw rod 232 is rotatably installed inside the operating groove 231 of two adjacent side heat dissipation cavities 230, and a gear 234 is fixedly installed on the screw rod 233 and the bidirectional screw rod 232. The battery module mounting box 200 is close to the side of the battery module mounting box 200. A slot 235 is provided at the top of the operation slot 1 231, and a rack 236 matching the gear 234 is movably connected inside the slot 235. The top of the rack 236 is fixedly installed on the bottom of the top cover 300. A group of internal threaded sliders 237 are threadedly connected to the screw rod 233, and two groups of internal threaded sliders 237 are threadedly connected to the bidirectional screw rod 232. A heat sink 238 is fixedly connected between the internal threaded sliders 237. A movable slot 2312 is provided through the inside of the side heat dissipation cavity 230 near the bottom heat dissipation cavity 250, and a movable heat dissipation fin 239 is movably installed inside the movable slot 2312. A movable slot 2310 is provided on the other side of the heat dissipation plate 238, and a heat dissipation spring 2311 is fixedly connected inside the movable slot 2310. A fixed heat dissipation fin 2313 is fixedly installed through the bottom of the top heat dissipation cavity 240, and a fixed heat dissipation fin 2313 is fixedly installed through the top of the bottom heat dissipation cavity 250.

[0030] It can be imagined that the lithium battery module 600 needs to be placed inside the battery installation cavity 500 and supported by the fixed heat dissipation fins 2313 on the protective base 100 when in use. After the lithium battery module 600 is placed, the top cover 300 can be assembled with the top of the battery module installation box 200. When assembling the top cover 300, the rack 236 needs to be inserted into the slot 235 at the top of the battery module installation box 200. When the rack 236 is inserted into the slot 235, it can drive the gear 234 to mesh and rotate. When the wheel 234 is meshed and rotated, the bidirectional screw rod 232 and the screw rod 233 can be driven to rotate inside the operating groove 1 231. When the bidirectional screw rod 232 and the screw rod 233 rotate, the internal thread slider 237 can be driven to slide. When the internal thread slider 237 slides, it can slide inside the operating groove 1 231. When the internal thread slider 237 slides, it can drive the heat sink 238 to slide in the side heat sink cavity 230. When the heat sink 238 slides, the heat sink spring 2311 can be bent by its own elastic force, and the heat sink spring 2311 can be driven to slide. When the sheet 2311 is bent, the surface will always fit with the inner wall of the side heat dissipation cavity 230. When the heat dissipation plate 238 slides, it can drive the movable heat dissipation fins 239 to slide inside the movable groove 2312. When the movable heat dissipation fins 239 move to the side of the lithium battery module 600, they will clamp and fix it. When the lithium battery module 600 is clamped and fixed, it can work. When the lithium battery module 600 works, it will emit a lot of heat inside the battery installation cavity 500. The fixed heat dissipation fins 2313 can hold the top of the lithium battery module 600. The heat emitted from the bottom is respectively conducted to the inside of the top heat dissipation cavity 240 and the bottom heat dissipation cavity 250, and the movable heat dissipation fins 239 can conduct the heat emitted from the side of the lithium battery module 600 to the heat dissipation plate 238 and the heat dissipation spring 2311 located inside the side heat dissipation cavity 230, and the air circulating inside the top heat dissipation cavity 240, the bottom heat dissipation cavity 250 and the side heat dissipation cavity 230 can take away the heat from the fixed heat dissipation fins 2313, the movable heat dissipation fins 239, the heat dissipation plate 238 and the heat dissipation spring 2311.

[0031] like Figure 1-Figure 3 , Figure 5 , Figure 6 , Fig. 9 and Fig.11As shown, the exhaust port 270 also includes a fan 272 fixedly mounted on the side of the exhaust port 270, and a cylinder 273 mounted on the protective base 100. When the driving speed of the new energy vehicle is lower than a specified value, the fan 272 and the cylinder 273 work simultaneously. When the cylinder 273 works, several groups of sealing plates 215 can be opened simultaneously. After the sealing plates 215 are opened, the fan 272 works to dissipate heat for the lithium battery module 600. A wind speed sensor 271 is installed at the windward port of the new energy vehicle, and a push plate 274 is fixedly mounted on the output end of the cylinder 273. An operating slot 275 is provided inside the air inlet 210, and one end of the rotating rod 213 is connected inside the operating slot 275. A push rod 276 is movably connected through the operating slot 275, and one end of the push rod 276 is fixedly connected to the side of the push plate 274. The side of the push rod 276 close to the rotating rod 213 is fixedly connected to a top block 277, and the side of the rotating rod 213 close to the top block 277 is fixedly connected to a rotating plate 278.

[0032] It can be understood that the wind speed sensor 271 can monitor the speed of the new energy vehicle. When the speed is lower than the specified value, the wind speed sensor 271 can send instructions to the fan 272 and the cylinder 273. When the cylinder 273 is working, it can push the push plate 274 to move. When the push plate 274 moves, it can push the push rod 276 to move. When the push rod 276 moves, it can slide inside the operating slot 275. When the push rod 276 slides, it can drive the top block 277 to move. When the top block 277 moves, it can push the rotating plate 278 to rotate. The rotating plate 27 When the rotating rod 213 rotates, it can drive the rotating rod 213 to rotate inside the extrusion groove 212. When the rotating rod 213 rotates, it can drive several groups of sealing plates 215 to rotate. When the sealing plates 215 rotate, the opening 211 can be opened. After the opening 211 is opened, the suction force generated by the fan 272 when working draws the external air through the air inlet 210 to the heat dissipation cavity of the battery module installation box 200 to dissipate the heat of the lithium battery module 600. When the wind speed sensor 271 detects that the wind speed is higher than the specified value, it can send a command to the fan 272 and the cylinder 273 to stop working.

[0033] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A new energy vehicle power lithium-ion battery module structure, comprising a protective base (100), the protective base (100) being installed on the new energy vehicle, a battery module installation box (200) being fixedly installed on the protective base (100), a top cover (300) being fixedly installed on the top of the battery module installation box (200) by bolts, a power connector (400) being fixedly installed on the left side of the battery module installation box (200), a plurality of battery installation cavities (500) being opened on the inner side of the battery module installation box (200), a lithium battery module (600) being fixedly installed inside the battery installation cavity (500), a power line box (700) being fixedly installed inside the battery module installation box (200), two ends of a power line connected inside the power line box (700) being respectively connected to the lithium battery module (600) and the power connector (400), characterized in that: The battery module installation box (200) further comprises air inlets (210) fixedly mounted at the front and rear of the battery module installation box (200), and docking grooves (220) provided on the surface of the battery module installation box (200); a side heat dissipation cavity (230) is provided inside the battery module installation box (200) near the docking grooves (220); a top heat dissipation cavity (240) is provided on the top cover (300) near the bottom of the docking grooves (220); a bottom heat dissipation cavity (250) is provided on the protective base (100) near the top of the docking grooves (220); and the battery module installation box (200) A conveying cavity (260) is provided inside the power line box (700), and an exhaust port (270) is provided on the right side of the battery module installation box (200) near the conveying cavity (260). When the driving speed of the new energy vehicle reaches a specified value, air enters the air inlet (210), and is diverted through the docking groove (220) into the side heat dissipation cavity (230), the top heat dissipation cavity (240), and the bottom heat dissipation cavity (250), so as to convey the heat emitted by the lithium battery module (600) to the conveying cavity (260). After the heat enters the conveying cavity (260), it can be discharged through the exhaust port (270); The air inlet (210) further comprises four groups of openings (211) extending through the side of the air inlet (210), and a sealing plate (215) rotatably mounted inside the openings (211); the sealing plate (215) can be opened by blowing air, and after the sealing plate (215) is opened, air can enter the interior of the battery module installation box (200) through the openings (211); The side heat dissipation cavity (230) further comprises a movable heat dissipation fin (239) movably mounted inside the side heat dissipation cavity (230), and a heat dissipation plate (238) fixedly mounted on the side of the movable heat dissipation fin (239); when the top cover (300) is mounted on the battery module mounting box (200), the movable heat dissipation fin (239) and the heat dissipation plate (238) can be moved laterally in the side heat dissipation cavity (230) by pressing; when the movable heat dissipation fin (239) moves to the side of the lithium battery module (600), it can be clamped and fixed, and at the same time, it can absorb the heat emitted by the lithium battery module (600) when it is working; The exhaust port (270) further comprises a fan (272) fixedly mounted on a side of the exhaust port (270), and a cylinder (273) mounted on the protective base (100); when the driving speed of the new energy vehicle is lower than a specified value, the fan (272) and the cylinder (273) operate simultaneously; when the cylinder (273) operates, several groups of sealing plates (215) can be opened simultaneously; after the sealing plates (215) are opened, the fan (272) operates to dissipate heat for the lithium battery module (600).

2. The new energy vehicle power lithium-ion battery module structure according to claim 1, characterized in that: The battery installation cavities (500) are provided in two rows, each of which has six battery installation cavities (500); the docking slots (220) are provided in a plurality of groups, each of which corresponds to a group of side heat dissipation cavities (230), a top heat dissipation cavity (240), and a bottom heat dissipation cavity (250); the side heat dissipation cavity (230), the top heat dissipation cavity (240), and the bottom heat dissipation cavity (250) are connected to the conveying cavity (260); and a complete heat dissipation channel is formed between the air inlet (210), the docking slots (220), the side heat dissipation cavity (230), the top heat dissipation cavity (240), the bottom heat dissipation cavity (250), the conveying cavity (260), and the exhaust port (270).

3. The new energy vehicle power lithium-ion battery module structure according to claim 2 is characterized in that: The four groups of openings (211) correspond to a group of docking grooves (220) respectively. Extrusion grooves (212) are provided inside the openings (211) located at the top and bottom of the air inlet (210). A rotating rod (213) is rotatably connected through the extrusion grooves (212). The side surface of the rotating rod (213) passes through the inside of the opening (211) located in the middle of the air inlet (210).

4. The new energy vehicle power lithium-ion battery module structure according to claim 3 is characterized in that: One end of a torsion spring (214) is connected to the surface of the rotating rod (213), and the other end of the torsion spring (214) is fixedly connected to the inside of the extrusion groove (212). Four groups of sealing plates (215) are fixed to the rotating rod (213), and the four groups of sealing plates (215) correspond to the four groups of openings (211) one by one. A filter screen (216) is fixedly installed on the side of the air inlet (210) close to the opening (211), and the filter screen (216) is arc-shaped.

5. The new energy vehicle power lithium-ion battery module structure according to claim 1, characterized in that: Four groups of diverter plates (221) are fixedly installed inside the docking groove (220), and the four groups of diverter plates (221) are distributed inside the docking groove (220) at equal distances.

6. The new energy vehicle power lithium-ion battery module structure according to claim 1, characterized in that: An operating groove (231) is provided on the inner side of the side heat dissipation cavity (230), a screw rod (233) is rotatably mounted inside the operating groove (231), and bidirectional screw rods (232) are rotatably mounted inside the operating grooves (231) of two adjacent side heat dissipation cavities (230), and a gear (234) is fixedly mounted on both the screw rod (233) and the bidirectional screw rod (232).

7. The new energy vehicle power lithium-ion battery module structure according to claim 6, characterized in that: The battery module installation box (200) is provided with a slot (235) at the top near the first operating slot (231), a rack (236) matching the gear (234) being movably connected inside the slot (235), and the top end of the rack (236) is fixedly mounted on the bottom of the top cover (300).

8. The new energy vehicle power lithium-ion battery module structure according to claim 7, characterized in that: A group of internal threaded sliders (237) are threadedly connected to the screw rod (233), two groups of internal threaded sliders (237) are threadedly connected to the bidirectional screw rod (232), a heat sink (238) is fixedly connected between the internal threaded sliders (237), and a movable groove (2312) is provided through the inside of the side heat dissipation cavity (230) close to the bottom heat dissipation cavity (250).

9. The new energy vehicle power lithium-ion battery module structure according to claim 8, characterized in that: A movable heat dissipation fin (239) is movably installed inside the movable groove (2312), a movable groove (2310) is opened on the other side of the heat dissipation plate (238), a heat dissipation spring (2311) is fixedly connected inside the movable groove (2310), a fixed heat dissipation fin (2313) is fixedly installed through the bottom of the top heat dissipation cavity (240), and a fixed heat dissipation fin (2313) is fixedly installed through the top of the bottom heat dissipation cavity (250).

10. The new energy vehicle power lithium-ion battery module structure according to claim 1, characterized in that: A wind speed sensor (271) is installed at the windward port of the new energy vehicle, a push plate (274) is fixedly installed at the output end of the cylinder (273), an operating slot 2 (275) is opened inside the air inlet (210), one end of a rotating rod (213) is connected inside the operating slot 2 (275), a push rod (276) is movably connected through the operating slot 2 (275), one end of the push rod (276) is fixedly connected to the side of the push plate (274), a side of the push rod (276) close to the rotating rod (213) is fixedly connected to a top block (277), and a side of the rotating rod (213) close to the top block (277) is fixedly connected to a rotating plate (278).

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