Power van

Abstract

The invention relates to the technical field of energy storage equipment, and discloses a power van which comprises a trailer, an energy storage system, a water chilling unit and a charging and discharging device, the trailer comprises a frame, the energy storage system comprises a plurality of battery clusters, the battery clusters are arranged on the frame side by side in the first direction, and each battery cluster comprises a plurality of battery modules; the multiple battery modules are stacked in the second direction, liquid cooling plates are arranged in the battery modules, and the first direction intersects with the second direction; the water cooling unit is arranged on the frame, and the water cooling unit communicates with the liquid cooling plate through the liquid supply pipeline system and the liquid return pipeline system to form a cooling circulation loop; and the charging and discharging device is arranged on the frame, electrically connected with the energy storage system and used for inputting or outputting current, the spontaneous combustion risk of the battery can be reduced, and the energy density of the whole vehicle can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage equipment, and in particular to a power supply vehicle. Background Art

[0002] The power supply vehicle includes a vehicle body and an energy storage system arranged on the vehicle body. In the related art, the vehicle body of the power supply vehicle is usually in the form of a box truck, and the battery pack, battery management system and other equipment of the energy storage system are arranged in the box truck, thereby forming a box-type power supply vehicle. The box-type power supply vehicle stores electrical energy through batteries and outputs electrical energy when needed.

[0003] However, after the box-type power supply vehicle's battery pack has been working for a long time, the heat inside the box will gradually accumulate. Since the battery is flammable and explosive at high temperatures, as the heat inside the box continues to accumulate, the battery may burn or even explode.

[0004] In addition, in the box-type power supply vehicle in the related art, the internal space of the box is divided into multiple independent spaces for storing battery packs, and each independent space is similar to a drawer structure, which causes a waste of the internal space of the box and is not conducive to improving the overall energy density of the power supply vehicle. Summary of the invention

[0005] The present application provides a power supply vehicle that can reduce the risk of battery spontaneous combustion and improve the energy density of the entire vehicle.

[0006] On the one hand, the present application provides a power supply vehicle, including a trailer, an energy storage system, a water cooling unit and a charging and discharging device, and the specific scheme is as follows.

[0007] The trailer includes a frame, the energy storage system includes a plurality of battery clusters, the plurality of battery clusters are arranged side by side on the frame along a first direction, the battery cluster includes a control module and a plurality of battery modules, the plurality of battery modules are stacked along a second direction, the control module is arranged on top of the plurality of battery modules, a liquid cooling plate is arranged in the battery module, wherein the first direction intersects with the second direction;

[0008] A water cooling unit is arranged on the frame, and the water cooling unit is connected with the liquid cooling plate through a liquid supply pipeline system and a liquid return pipeline system to form a cooling circulation loop;

[0009] The charging and discharging device is arranged on the frame, the charging and discharging device is electrically connected to the energy storage system, and the charging and discharging device is used for inputting or outputting current.

[0010] Beneficial effect: multiple battery clusters are fixed on the frame side by side along the first direction, and the multiple battery modules in the battery cluster are stacked along the second direction, that is, the battery modules are arranged in an array on the frame along the first direction and the second direction, and the multiple battery modules in each battery cluster are stacked, with a high density, which can improve space utilization, avoid space waste, and improve the overall energy density of the power supply vehicle.

[0011] In addition, multiple battery clusters are directly installed on the frame, and no sealed box is set outside for covering, so that the battery module can directly contact the external environment for heat exchange. Combined with the liquid cooling plate set inside the battery module, the heat generated by the energy storage system can be quickly diffused to ensure the stability of the operating temperature of the energy storage system, avoid high temperature in the energy storage system, and cause flammability and explosion, so as to improve the overall safety of the power supply vehicle.

[0012] In an optional embodiment, the battery cluster further comprises a plurality of fixing rods, and a plurality of first fixing holes are arranged on the battery module in a circumferential direction around the second direction;

[0013] In one of the battery clusters, the first fixing holes corresponding to the plurality of battery modules along the second direction are connected to the vehicle frame via one of the fixing rods.

[0014] In an optional embodiment, the battery module includes a first containing frame, the liquid cooling plate and at least one battery cell, the liquid cooling plate is located at the inner bottom of the first containing frame, the battery cell is located in the first containing frame, and the upper portion of the first containing frame is open; the control module includes a second containing frame and a control circuit, the control circuit is arranged in the second containing frame, and the upper portion of the second containing frame is open; wherein, among any two adjacent layers of the first containing frames, the first containing frame located at the upper portion covers the opening of the first containing frame located at the lower portion; and the second containing frame covers the opening of the first containing frame located at the lower portion of the second containing frame.

[0015] In an optional embodiment, the battery cluster further includes an upper cover plate, which is disposed in the battery cluster and covers an opening of the first accommodating frame at the top along the second direction.

[0016] In an optional embodiment, two baffle assemblies are further included, and the two baffle assemblies are arranged on the battery cluster, spaced apart from the energy storage system, and respectively shield two sides of the energy storage system along a third direction, and the third direction intersects with both the first direction and the second direction.

[0017] In an optional embodiment, the charging and discharging device includes a DC charging and discharging module and an AC charging and discharging module, the AC charging and discharging module and the water cooling unit are respectively arranged at two ends of the energy storage system along the first direction, and the DC charging and discharging module is arranged on the lower side of the frame.

[0018] In an optional embodiment, the DC charging and discharging module includes two front DC charging and discharging cabinets, which are respectively arranged at the lower part of both sides of the frame and located in front of the rear wheels of the trailer, and at least one charging gun is arranged in the front DC charging and discharging cabinet.

[0019] In an optional embodiment, the DC charging and discharging module also includes two rear DC charging and discharging cabinets, which are respectively arranged at the lower part of both sides of the frame and behind the rear wheels of the trailer, and at least one charging gun is arranged in the rear DC charging and discharging cabinet.

[0020] In an optional implementation, a plurality of adapter components are provided in the front DC charging and discharging cabinet, one end of the adapter component is used for plugging with the charging gun, and the other end of the adapter component is used for plugging with an external charging gun.

[0021] In an optional embodiment, the adapter component includes a first socket, a connecting wire and a second socket, both ends of the connecting wire are respectively connected to the first socket and the second socket, one of the first socket and the second socket is used to be plugged into the charging gun, and the other is used to be plugged into an external charging gun; and / or, multiple battery clusters are connected one-to-one with the charging guns in the DC charging and discharging module; and / or, at least one AC charging and discharging port is provided in the AC charging and discharging module, and each of the battery clusters is connected to the AC charging and discharging port through a switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the related technologies, the drawings required for use in the specific implementation methods or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 This is an axle side view of a power supply vehicle according to an embodiment of the present application;

[0024] Figure 2 This is an axle-side view of a power supply vehicle from another perspective of an embodiment of the present application;

[0025] Figure 3This is an axial side view of a power supply vehicle according to an embodiment of the present application with the baffle assembly and the water cooling assembly removed;

[0026] Figure 4 This is an axial side view of a skid-mounted base and an AC charging and discharging module in a power supply vehicle according to an embodiment of the present application;

[0027] Figure 5 This is an axle side view of a trailer in a power supply vehicle according to an embodiment of the present application;

[0028] Figure 6 This is an axial side view of a skid-mounted base and a water cooling assembly in a power supply vehicle according to an embodiment of the present application;

[0029] Figure 7 for Figure 5 A partial enlarged view of point B in the middle;

[0030] Figure 8 for Figure 6 A partial enlarged view of the middle A;

[0031] Fig. 9 Another axial view of a skid-mounted base and a water cooling assembly in a power supply vehicle according to an embodiment of the present application;

[0032] Fig.10 This is an axial side view of a skid-mounted base in a power supply vehicle according to an embodiment of the present application;

[0033] Fig.11 This is an axle-side view of a trailer without a skid-mounted base in a power supply vehicle according to an embodiment of the present application;

[0034] Fig.12 This is an axial side view of a switching component in a power supply vehicle according to an embodiment of the present application;

[0035] Fig.13 This is an axle-side view of a battery cluster in a power supply vehicle according to an embodiment of the present application;

[0036] Fig.14 This is an axial side view of a first battery frame in a battery module in a power supply vehicle according to an embodiment of the present application;

[0037] Fig.15 This is an axonometric view of a second battery frame in a control module in a power supply vehicle according to an embodiment of the present application.

[0038] Description of reference numerals:

[0039] X, first direction; Y, second direction; Z, third direction;

[0040] 1. Trailer; 2. Energy storage system; 3. Water cooling unit; 4. Charging and discharging device; 5. Liquid supply pipeline system; 6. Liquid return pipeline system; 7. Baffle assembly;

[0041] 11. Frame; 111. Top plate; 12. Skid-mounted base;

[0042] 121, first longitudinal beam; 122, second longitudinal beam; 123, reinforcement portion; 124, through hole; 125, perforation;

[0043] 1211, first beam body; 1221, second beam body;

[0044] 21. Battery cluster;

[0045] 211, battery module; 212, control module; 213, upper cover;

[0046] 2111, first fixing hole; 2112, first containing frame; 2121, second fixing hole; 2122, second containing frame;

[0047] 41. DC charging and discharging module; 42. AC charging and discharging module; 43. DC wiring harness; 44. AC wiring harness;

[0048] 411, front DC charging and discharging cabinet; 412, rear DC charging and discharging cabinet;

[0049] 4111, adapter component; 41111, first socket; 41112, connecting wire; 41113, second socket;

[0050] 51. Liquid supply main line; 52. Liquid supply branch line;

[0051] 61. Liquid return main line; 62. Liquid return branch line. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution 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 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 those skilled in the art without making creative work are within the scope of protection of this application.

[0053] In the related art, a power supply vehicle includes a vehicle body and an energy storage system arranged on the vehicle body. The vehicle body of the power supply vehicle is usually in the form of a box truck. The battery pack, battery management system and other equipment of the energy storage system are arranged in the box truck, thereby forming a box-type power supply vehicle. The box-type power supply vehicle stores electrical energy through batteries and outputs electrical energy when needed.

[0054] However, after the box-type power supply vehicle's battery pack has been working for a long time, the heat inside the box will gradually accumulate. Since the battery is flammable and explosive at high temperatures, as the heat inside the box continues to accumulate, the battery may burn or even explode.

[0055] In addition, in the box-type power supply vehicle in the related art, the internal space of the box is divided into multiple independent spaces for storing battery packs, and each independent space is similar to a drawer structure, which causes a waste of the internal space of the box and is not conducive to improving the overall energy density of the power supply vehicle.

[0056] In order to solve the above technical problems, the present application provides a power supply vehicle that can reduce the risk of battery spontaneous combustion and improve the energy density of the entire vehicle.

[0057] Combine the following Figures 1 to 15 , describing an embodiment of the present application.

[0058] According to an embodiment of the present application, on the one hand, a power supply vehicle is provided, such as Figures 1 to 3 As shown, it includes a trailer 1, an energy storage system 2, a water cooling unit 3 and a charging and discharging device 4, and the specific scheme is as follows.

[0059] like Figure 1 As shown, the trailer 1 includes a frame 11. Specifically, the frame 11 is made of a steel frame. Wheels are arranged at the middle and rear part of the frame 11. The wheels are arranged in three rows along the first direction X, with 4 wheels in each row, evenly distributed on both sides of the frame 11. The front part of the frame 11 is used to connect with the power locomotive.

[0060] like Figure 3 As shown, the energy storage system 2 includes a plurality of battery clusters 21, and the plurality of battery clusters 21 are arranged side by side on the frame 11 along the first direction X. Specifically, the adjacent battery clusters 21 can be arranged close to each other (ie, zero close to each other), or a certain spacing can be set, and the spacing is 10 to 30 mm. The latter is preferred to enhance heat dissipation; Fig.13 As shown, the battery cluster 21 includes a control module 212 and a plurality of battery modules 211, the plurality of battery modules 211 are stacked along the second direction Y, the control module 212 is arranged on the upper part of the plurality of battery modules 211, and a liquid cooling plate is arranged in the battery module 211, wherein the first direction X intersects with the second direction Y, and preferably, the first direction X is perpendicular to the second direction Y.

[0061] A PCS (Power Conversion System) may be provided inside the control module 212 to connect with the AC charging and discharging circuit and the DC charging and discharging circuit by plugging.

[0062] like Figures 1 to 3As shown, the water cooling unit 3 is arranged on the frame 11. Specifically, the water cooling unit 3 can control the water temperature of the circulating water, and can cool the circulating water to cool the battery cluster 21, and can also heat the circulating water to heat the battery cluster 21 in a cold weather environment; the water cooling unit 3 is connected to the liquid cooling plate through the liquid supply pipeline system 5 and the liquid return pipeline system 6 to form a cooling circulation loop. Specifically, the liquid supply pipeline system 5 and the liquid return pipeline system 6 are both pipelines composed of plastic pipes, steel pipes and adapters.

[0063] like Figure 1 As shown, the charging and discharging device 4 is arranged on the vehicle frame 11 by fasteners, and the charging and discharging device 4 is electrically connected to the energy storage system 2 by a wiring harness, and the charging and discharging device 4 is used for inputting or outputting current; it should be noted that the charging and discharging device 4 is used for inputting or outputting current, which means that the charging and discharging device 4 can realize both inputting current and outputting current, but the input current and the output current are in different time periods, or the input current and the output current use different interfaces.

[0064] During specific use, multiple battery clusters 21 are fixed on the frame 11 side by side along the first direction X, and the multiple battery modules 211 in the battery cluster 21 are stacked along the second direction Y, that is, the battery modules 211 are arranged in an array on the frame 11 along the first direction X and the second direction Y, and the multiple battery modules 211 in each battery cluster 21 are stacked, with a high density, which can improve space utilization, avoid space waste, and improve the overall energy density of the power supply vehicle.

[0065] In addition, multiple battery clusters 21 are directly installed on the frame 11, and no sealed box is set on the outside for covering, so that the battery module 211 can directly contact the external environment for heat exchange, and combined with the liquid cooling plate set inside the battery module 211, the heat generated by the energy storage system 2 can be quickly diffused to ensure the stability of the operating temperature of the energy storage system 2, avoid high temperature of the energy storage system 2, which may lead to flammability and explosion, and improve the safety of the whole vehicle of the power supply vehicle.

[0066] In one embodiment, Figure 1 , Fig.14 and Fig.15As shown, the battery cluster 21 also includes a plurality of fixing rods, specifically, the fixing rods are rod bodies supported by steel bars, threads are set at both ends, and nuts are screwed; a plurality of first fixing holes 2111 are arranged circumferentially around the second direction Y on the battery module 211, and a plurality of second fixing holes 2121 are arranged circumferentially around the second direction Y on the control module 212; the number of the first fixing holes 2111 and the second fixing holes 2121 is 4 to 8, specifically, the battery module 211 has four first fixing holes 2111 evenly distributed circumferentially along the second direction Y, the battery module 211 is rectangular, that is, one first fixing hole 2111 is set at each of the four corners of the battery module 211, the control module 212 has four second fixing holes 2121 evenly distributed circumferentially along the second direction Y, the control module 212 is rectangular, that is, one second fixing hole 2121 is set at each of the four corners of the control module 212. Of course, other schemes are also possible, such as the number of the first fixing holes 2111 and the second fixing holes 2121 is 6 or 8.

[0067] In each battery cluster 21, the second fixing hole 2121 on the control module 212 and the first fixing holes 2111 on the multiple battery modules 211 correspond to each other along the second direction Y. The fixing rod passes through the second fixing hole 2121 and each first fixing hole 2111 along the second direction Y and is connected to the frame 11. Specifically, the fixing rod passes through the first fixing holes 2111 on each battery module 211 and the second fixing holes 2121 on the control module 212 to string the multiple battery modules 211 and the control module 212 into a string along the second direction Y. The end of the fixing rod close to the frame 11 is connected to the frame 11 through a nut, and the end of the fixing rod away from the frame 11 is contacted with the top of the battery module 211 away from the frame 11 through a nut.

[0068] In this embodiment, a plurality of first fixing holes 2111 are provided on the battery modules 211 in the battery cluster 21 in the circumferential direction around the second direction Y, a plurality of second fixing holes 2121 are arranged on the control module 212 in the circumferential direction around the second direction Y, and a fixing rod is passed through the plurality of first fixing holes 2111 on the plurality of battery modules 211 and the second fixing holes 2121 on the control module 212 to connect with the vehicle frame 11. The structure is simple, the connection strength is high, and it is easy to disassemble.

[0069] In some embodiments not shown, the battery cluster 21 further includes a fixing frame, which may be formed by welding triangles, and a plurality of battery modules 211 and a control module 212 are accommodated in the fixing frame, and the fixing frame is connected to the vehicle frame 11 by bolts and nuts.

[0070] In one embodiment, Figure 3 and Fig.14As shown, the battery module 211 includes a first accommodating frame 2112, a liquid cooling plate and at least one battery cell. The liquid cooling plate is located at the inner bottom of the first accommodating frame 2112. The battery cell is located in the first accommodating frame 2112. The upper portion of the first accommodating frame 2112 is open. Specifically, the first accommodating frame 2112 is a plastic frame or a metal frame. The bottom and side walls of the first accommodating frame 2112 are sealed with a plate material. The plate material may be a metal plate or a plastic plate. A metal plate is preferred because of its good thermal conductivity and heat dissipation performance.

[0071] like Fig.15 As shown, the control module 212 includes a second containing frame 2122 and a control circuit. The control circuit is arranged in the second containing frame 2122. The upper part of the second containing frame 2122 is open. Specifically, the second containing frame 2122 is a plastic frame or a metal frame.

[0072] Among them, in any two adjacent layers of first accommodating frames 2112, the first accommodating frame 2112 located at the upper part covers the opening of the first accommodating frame 2112 located at the lower part; the second accommodating frame 2122 covers the opening of the first accommodating frame 2112 located at the lower part of the second accommodating frame 2122; specifically, the opening on the first accommodating frame 2112 is sealed by the bottom surface of the first accommodating frame 2112 located at the upper part thereof.

[0073] More specifically, the battery unit may be a single battery cell, or may be composed of a plurality of stacked battery cells. The battery cell may be a square battery cell or a cylindrical battery cell, etc. When there are a plurality of battery cells, the battery cells are placed side by side in the first accommodating frame 2112 .

[0074] Specifically, Fig.14 As shown, the first fixing hole 2111 is provided on the first accommodating frame 2112, and is connected and fixed to the vehicle frame 11 through the above-mentioned fixing rod; Fig.15 As shown, the second fixing hole 2121 is provided on the second accommodating frame 2122 and is connected and fixed to the vehicle frame 11 via the above-mentioned fixing rod.

[0075] In this embodiment, the battery unit and the liquid cooling plate are fixedly integrated by the first accommodating frame 2112, which can be easily fixed on the frame 11 and improve the stability of the battery unit on the power supply vehicle to prevent problems such as falling and falling apart; at the same time, multiple battery cells and liquid cooling plates are accommodated in the first accommodating frame 2112 and fixedly integrated to form a battery module 211, and different battery modules 211 are stacked and connected in series and parallel to adjust the capacity of the power supply vehicle.

[0076] In one embodiment, Fig.13As shown, the battery cluster 21 further includes an upper cover plate 213 . Specifically, the upper cover plate 213 may be a plastic plate or a metal cover plate coated with an anti-rust paint layer. The upper cover plate 213 covers the opening of the second accommodating frame 2122 .

[0077] In this embodiment, the upper cover plate 213 seals the opening of the second containing frame 2122 to prevent external foreign matter from falling into the second containing frame 2122 and causing problems such as short circuits.

[0078] In one embodiment, Figure 1 As shown, the power supply vehicle also includes two baffle assemblies 7. Specifically, the baffles are plastic plates or metal plates coated with an anti-rust paint layer. The two baffle assemblies 7 are arranged on the battery cluster 21 through a clamping structure, and are spaced apart from the energy storage system 2. They respectively block the two sides of the energy storage system 2 along the third direction Z, and the third direction Z intersects with both the first direction X and the second direction Y.

[0079] Specifically, one end of the baffle along the first direction X is rotatably connected to the frame 11, and the other end of the baffle along the first direction X is snap-fitted to the frame 11. When the energy storage system 2 is in a high temperature environment, the baffle can be opened to enable the energy storage system 2 to quickly exchange heat with the external environment, thereby further improving the cooling effect of the energy storage system 2.

[0080] In this embodiment, the baffle is provided to shield the energy storage module on both sides along the third direction Z, thereby preventing personnel from contacting the wiring harness in the battery cluster 21 and causing safety accidents.

[0081] In one embodiment, Figure 1 As shown, the charging and discharging device 4 includes a DC charging and discharging module 41 and an AC charging and discharging module 42. Specifically, the DC charging and discharging module 41 includes at least one electrical cabinet, and the AC charging and discharging module 42 includes at least one electrical cabinet; the AC charging and discharging module 42 and the water cooling unit 3 are respectively arranged at both ends of the energy storage system 2 along the first direction X, and the DC charging and discharging module 41 is arranged on the lower side of the frame 11.

[0082] Specifically, the AC charging and discharging module 42, the energy storage system 2 and the water cooling unit 3 are sequentially arranged on the frame 11 along the first direction X, and are all fixed to the frame 11 by bolts. Usually, the AC charging and discharging module 42 is located at the rear of the frame 11 to facilitate the staff to connect the wires. The water cooling unit 3 is located at the head of the frame 11, and the water cooling unit 3 generally does not need to be operated.

[0083] The DC charging and discharging module 41 is disposed at the lower portion of the vehicle frame 11 , so that it is convenient for the staff to take it.

[0084] In this embodiment, the charging and discharging device 4 includes a DC charging and discharging module 41 and an AC charging and discharging module 42, which can realize the input and output of AC power and the input and output of DC power, and can be applied to a variety of usage scenarios and power replenishment scenarios, thereby improving the applicability of the power supply vehicle.

[0085] At the same time, the AC charging and discharging module 42 is arranged at one end of the frame 11, which is convenient for the staff to operate; the DC charging and discharging module 41 is arranged at the lower part of the frame 11, and the DC charging and discharging module 41 has a simple structure, which improves the rationality of the overall layout of the power supply vehicle.

[0086] In a specific embodiment, Figure 1 and Fig.11 As shown, the DC charging and discharging module 41 includes two front DC charging and discharging cabinets 411, which are respectively arranged at the lower part of both sides of the frame 11 and located in front of the rear wheels of the trailer 1. Specifically, the two front DC charging and discharging cabinets 411 are connected to the frame 11 by bolts, as shown in FIG. Fig.11 As shown, at least one charging gun is provided in the front DC charging and discharging cabinet 411 , and the number of charging guns in each front DC charging and discharging cabinet 411 is 2 to 5, preferably 3, to meet the simultaneous charging and discharging requirements of multiple devices.

[0087] Specifically, a plurality of fixing seats are provided in the front DC charging and discharging cabinet 411, and the plurality of fixing seats correspond to charging guns one by one, and the charging guns are inserted into the fixing seats; a plurality of hanging columns are provided in the front DC charging and discharging cabinet 411 at intervals to respectively hang the connecting cables of each charging gun head.

[0088] In this embodiment, the DC charging and discharging module 41 includes two front DC charging and discharging cabinets 411, which are arranged below the two sides of the frame 11 and in front of the rear wheels of the trailer 1, making full use of the free space of the chassis of the trailer 1 to avoid interference with the traction mechanism, while lowering the overall center of gravity and improving driving stability.

[0089] In one embodiment, Figure 1 , Figure 2 and Fig.11 As shown, the DC charging and discharging module 41 also includes two rear DC charging and discharging cabinets 412, which are respectively arranged at the lower part of both sides of the frame 11 and behind the rear wheels of the trailer 1. Fig.11 As shown, at least one charging gun is arranged in the rear DC charging and discharging cabinet 412. The number of charging guns is preferably 1 to 2, preferably 1, which can increase the DC charging and discharging interface of the power supply vehicle.

[0090] Specifically, at least one fixing seat is provided in the rear DC charging and discharging cabinet 412, and the fixing seat corresponds to the charging gun one by one, and the charging gun is inserted into the fixing seat; a plurality of hanging columns arranged at intervals are provided in the rear DC charging and discharging cabinet 412 to respectively hang the connecting cables of each charging gun head.

[0091] In this embodiment, by setting up a rear DC charging and discharging cabinet 412 on both sides below the frame 11 and behind the rear wheels, the DC charging and discharging interface of the whole vehicle can be increased, power can be supplied to more electrical equipment, and DC power can be easily obtained at the rear of the frame 11.

[0092] In one embodiment, Figure 11 to Figure 12 As shown, a plurality of adapter components 4111 are arranged in the front DC charging and discharging cabinet 411 , one end of the adapter component 4111 is used for plugging with a charging gun, and the other end of the adapter component 4111 is used for plugging with an external charging gun.

[0093] In this embodiment, through multiple adapter components 4111, the charging gun in the DC charging module can be connected to an external DC charging gun, so that the power supply vehicle can directly use the external DC charging gun for charging, thereby improving the applicable charging scenarios of the power supply vehicle.

[0094] In a specific embodiment, Fig.12 As shown, the adapter component 4111 includes a first socket 41111, a connecting line 41112 and a second socket 41113, and the two ends of the connection are respectively connected to the first socket 41111 and the second socket 41113. One of the first socket 41111 and the second socket 41113 is used to connect with a charging gun, and the other is used to connect with an external charging gun.

[0095] Specifically, the connecting line 41112 is a cable, and the length of the cable can be set according to actual needs, generally 1m to 5m, preferably 2m.

[0096] In this embodiment, the adapter component 4111 includes a first socket 41111, a connecting wire 41112 and a second socket 41113. The connecting wire 41112 can increase the length of the adapter component 4111, thereby increasing the distance between the charging gun on the power supply vehicle and the external charging gun, further improving the applicability of the power supply vehicle.

[0097] In one embodiment, Fig.11 As shown, multiple battery clusters 21 are connected to the charging guns in the DC charging and discharging module 41 in a one-to-one correspondence, that is, one battery cluster 21 is connected to one charging gun, so that when multiple charging guns discharge simultaneously, the charging and discharging powers of different charging guns can be prevented from affecting each other and affecting the stability of charging and discharging.

[0098] In one embodiment, at least one AC charging and discharging port is provided in the AC charging and discharging module 42 , and each battery cluster 21 is connected to the AC charging and discharging port via a switch. Specifically, the switch is an intelligent electronic switch.

[0099] In specific use, according to the needs of use, for example, if two of the eight battery clusters 21 are used for DC discharge, or if these two battery clusters 21 have no power reserve, the switches of the remaining six battery clusters 21 can be connected to the AC charging and discharging ports for AC discharge, thereby avoiding mutual influence and improving the stability of AC and DC charging and discharging of the power supply vehicle.

[0100] In this embodiment, by connecting the battery clusters 21 to the AC charging and discharging interface through a switch respectively, it is possible to avoid mutual influence between the battery clusters 21 when performing different discharging tasks, thereby improving the charging and discharging stability of the power supply vehicle.

[0101] In one embodiment, Figure 3 As shown, the trailer 1 also includes a skid-mounted base 12, which is arranged on the frame 11; the energy storage system 2, the water cooling unit 3 and the AC cabinet group are fixed on the skid-mounted base 12 by bolts.

[0102] Specifically, the skid-mounted base 12 is a base welded by steel beams, and the steel beams can be steel materials such as I-beams and channel steels; the specific selection can be based on the load-bearing requirements of use.

[0103] In this embodiment, the skid-mounted base 12 realizes the prefabrication and integration of core equipment such as the energy storage system 2 and the water cooling unit 3 to form a standardized functional module; during transportation, the skid-mounted module can be directly hoisted as a whole to the frame 11, which can shorten the on-site installation time by more than 80% compared with the traditional loose parts assembly mode, and is particularly suitable for scenarios that require rapid response, such as emergency power supply and temporary operations.

[0104] In one embodiment, Figure 5 As shown, a top plate 111 is provided on the top surface of the frame 11 along the second direction Y, and the skid-mounted base 12 is provided on the top plate 111. Specifically, the top plate 111 is a metal plate sprayed with an anti-rust paint layer.

[0105] In this embodiment, the top plate 111 can separate the bottom of the frame 11 from the upper space of the frame 11, thereby preventing mud and the like from adhering to the bottom of the energy storage system 2, the charging and discharging device 4 and the water-cooling base from the bottom of the frame 11 when the trailer 1 is running.

[0106] In one embodiment, Figure 3 to Figure 4As shown, the skid-mounted base 12 includes a first longitudinal beam 121 and a second longitudinal beam 122, which are spaced apart on the frame 11 along the third direction Z. The first longitudinal beam 121 and the second longitudinal beam 122 are both hollow beams. Specifically, the first longitudinal beam 121 and the second longitudinal beam 122 can be steel beams with a rectangular ring cross-section.

[0107] In this embodiment, the skid-mounted base 12 includes a first longitudinal beam 121 and a second longitudinal beam 122. The first longitudinal beam 121 and the second longitudinal beam 122 are hollow beams. Compared with solid beams, hollow beams have a larger cross-sectional moment of inertia and stronger bending and torsion resistance under the same weight, thereby improving the bearing capacity and stability of the overall structure.

[0108] Hollow beams reduce material usage and lower overall weight, which is very important for equipment that needs to be moved or transported, such as vehicle-mounted skid-mounted equipment. Reducing weight can reduce transportation costs and improve maneuverability.

[0109] In one embodiment, Figure 4 As shown, the first longitudinal beam 121 includes a first beam body 1211 and a first side cover plate. The first beam body 1211 is opened on the side facing the outer side of the frame 11. The first side cover plate covers the opening on the first beam body 1211 and can be removed.

[0110] And / or, the second longitudinal beam 122 includes a second beam body 1221 and a second side cover plate, the second beam body 1221 is opened on the side facing the outer side of the frame 11, and the second side cover plate covers the opening on the second beam body 1221 and is detachable.

[0111] Specifically, the first beam body 1211 and the second beam body 1221 are both channel steels with a C-shaped cross-section. The first side cover plate and the second side cover plate can be steel plates or plastic plates, and are usually fixed to the first beam body 1211 and the second beam body 1221 respectively with bolts.

[0112] In the specific assembly process of the power supply vehicle, the first beam body 1211 and the second beam body 1221 are opened on the side facing the outside of the frame 11. When the energy storage device, the water cooling unit 3, the charging and discharging device 4 are connected to the top surface of the first beam body 1211 and the second beam body 1221 by bolts, it is convenient for tools to be inserted into the first beam body 1211 or the second beam body 1221 for operation. After the operation is completed, the first side cover plate and the second side cover plate are respectively connected to the first beam body 1211 and the second beam body 1221 by bolts.

[0113] In this embodiment, the first beam body 1211 and the second beam body 1221 are both opened on the sides facing the outside of the frame 11, so as to facilitate the connection operation between the energy storage device, the water cooling unit 3, the charging and discharging device 4 and other parts and the first longitudinal beam 121 and the second longitudinal beam 122, thereby improving the operating efficiency and simplifying the fixing structure.

[0114] In one embodiment, Figure 4 and Figure 5 As shown, the charging and discharging device 4 also includes multiple groups of DC harnesses 43 and multiple groups of AC harnesses 44. Specifically, the DC harnesses 43 and the AC harnesses 44 are cables, or other harnesses with stronger power transmission capabilities; Figure 5 As shown, the first ends of the plurality of DC harnesses 43 are respectively connected to the control modules 212 of the plurality of battery clusters 21 , and the second ends of the plurality of DC harnesses 43 pass through the first longitudinal beam 121 or the second longitudinal beam 122 and communicate with the charging and discharging device 4 .

[0115] like Figure 4 As shown, the first ends of the multiple AC harnesses 44 are respectively connected to the control modules 212 of the multiple battery clusters 21 , and the second ends of the multiple AC harnesses 44 pass through the first longitudinal beam 121 or the second longitudinal beam 122 to communicate with the charging and discharging device 4 .

[0116] Specifically, the first beam body 1211 includes a first upper top plate 111, a first lower bottom plate and a first inner side plate. The edges of the first upper top plate 111, the first inner side plate and the first lower bottom plate are sequentially connected to form a channel steel structure. Figure 7 As shown, the first top plate 111 and the first inner plate are both provided with a plurality of through holes 124 for the DC harness 43 or the AC harness 44 to pass through the through holes 124 of the first top plate 111 into the first longitudinal beam 121 and then pass through the through holes 124 on the first inner plate.

[0117] The second beam body 1221 includes a second upper top plate 111, a second lower bottom plate and a second inner plate. The edges of the second upper top plate 111, the second inner plate and the second lower bottom plate are connected in sequence to form a channel steel structure. A plurality of through holes 124 are provided on the second upper top plate 111 and the second inner plate, for the DC wiring harness 43 or the AC wiring harness 44 to pass through the through holes 124 of the second upper top plate 111 into the second longitudinal beam 122, and then pass out from the through holes 124 on the second inner plate.

[0118] In this embodiment, the DC harness 43 and the AC harness 44 both pass through the first longitudinal beam 121 or the second longitudinal beam 122 to communicate with the charging and discharging device 4, which can simplify the layout structure of the DC harness 43 and the AC harness 44, thereby improving the energy density of the entire vehicle.

[0119] In one embodiment, Figure 8 and Fig. 9As shown, the liquid supply pipeline system 5 includes a liquid supply trunk 51 and multiple liquid supply branches 52. Specifically, the liquid supply trunk 51 is a steel pipe or a plastic pipe. The liquid supply trunk 51 is connected to the outlet of the water cooling unit 3, and a part of the liquid supply trunk 51 is located between the first longitudinal beam 121 and the second longitudinal beam 122. The liquid supply trunk 51 is fixed to the frame 11 through a bracket. The first ends of the multiple liquid supply branches 52 are arranged at intervals and are all connected to the liquid supply trunk 51. The second ends of the multiple liquid supply branches 52 all pass through the first longitudinal beam 121 and are respectively connected to the liquid cooling plates in the multiple battery clusters 21.

[0120] Specifically, the liquid supply branch 52 may be a hose, or part of it may be a hose and the other part may be a hard pipe, the hard pipe part is connected to the liquid supply trunk 51, and the hose part is used to communicate with each liquid cooling plate; Figure 8 As shown, the first upper plate 111 and the first inner plate are both provided with a plurality of avoidance holes for the liquid supply branch 52 to pass through the through hole 124 of the first upper plate 111 into the first longitudinal beam 121 and then pass through the through hole 124 on the first inner plate.

[0121] like Figure 6 As shown, the liquid return pipeline system 6 includes a liquid return trunk 61 and multiple liquid return branches 62. The liquid return trunk 61 is connected to the inlet of the water cooling unit 3. A part of the liquid return trunk 61 is located between the first longitudinal beam 121 and the second longitudinal beam 122. The first ends of the multiple liquid return branches 62 are arranged at intervals and are all connected to the liquid return trunk 61. The second ends of the multiple liquid return branches 62 all pass through the second longitudinal beam 122 and are respectively connected to the liquid cooling plates in the multiple battery clusters 21.

[0122] Specifically, the liquid return branch 62 can be a hose, or part of it can be a hose and the other part can be a hard tube, the hard tube part is connected to the liquid return main line 61, and the hose part is used to connect with each liquid cooling plate; the second upper top plate 111 and the second inner plate are both provided with a plurality of avoidance holes, which are used for the liquid return branch 62 to pass through the through hole 124 of the second upper top plate 111 into the second longitudinal beam 122, and then pass through the through hole 124 on the first inner plate.

[0123] In this embodiment, by arranging the liquid supply main line 51 and the liquid return main line 61 between the first longitudinal beam 121 and the second longitudinal beam 122, and the liquid supply branch line 52 passes through the first longitudinal beam 121 to be connected with the inlet of each liquid cooling plate, and the liquid return branch line 62 passes through the second longitudinal beam 122 to be connected with the outlet of each liquid cooling plate, the arrangement structure of the liquid return branch line 62 and the liquid supply branch line 52 can be simplified, thereby improving the compactness of the power supply vehicle and improving the energy density of the power supply vehicle.

[0124] In one embodiment, Fig.10As shown, a plurality of reinforcing parts 123 are arranged at intervals along the first direction X in the first beam body 1211 and the second beam body 1221. Specifically, the reinforcing parts 123 are rectangular plates, or plates with openings for avoidance, and are connected to the first beam body 1211 or the second beam body 1221 by welding or bolting.

[0125] In this embodiment, the provision of the reinforcement portion 123 can improve the bending resistance of the first beam body 1211 and the second beam body 1221 , and improve the load-bearing resistance of the frame 11 .

[0126] In one embodiment, a plurality of water guide grooves are provided on the top plate 111, and the plurality of water guide grooves extend along the first direction X and are inclined toward the ground. Specifically, the water guide grooves can be inclined toward the rear of the frame 11 to quickly discharge rainwater to the ground behind the frame 11 to prevent a large amount of rainwater from gathering on the frame 11, thereby reducing the risk of leakage and improving safety performance.

[0127] Although the embodiments of the present application are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A power supply vehicle, characterized in that: include: A trailer (1) comprising a frame (11); An energy storage system (2) comprises a plurality of battery clusters (21), wherein the plurality of battery clusters (21) are arranged side by side on the vehicle frame (11) along a first direction (X), the battery cluster (21) comprises a control module (212) and a plurality of battery modules (211), the plurality of battery modules (211) are stacked and arranged along a second direction (Y), the control module (212) is arranged on top of the plurality of battery modules (211), and a liquid cooling plate is arranged in the battery module (211), wherein the first direction (X) intersects with the second direction (Y); A water cooling unit (3) is arranged on the vehicle frame (11), and the water cooling unit (3) is connected to the liquid cooling plate through a liquid supply pipeline system (5) and a liquid return pipeline system (6) to form a cooling circulation loop; A charging and discharging device (4) is arranged on the vehicle frame (11); the charging and discharging device (4) is electrically connected to the energy storage system (2); and the charging and discharging device (4) is used to input or output current.

2. The power supply vehicle according to claim 1, characterized in that: The battery cluster (21) further comprises a plurality of fixing rods, the battery module (211) is provided with a plurality of first fixing holes (2111) arranged circumferentially around the second direction (Y); the control module (212) is provided with a plurality of second fixing holes (2121) arranged circumferentially around the second direction (Y); In each of the battery clusters (21), the second fixing hole (2121) on the control module (212) and the first fixing holes (2111) on the plurality of battery modules (211) correspond to each other along the second direction (Y); the fixing rod passes through the second fixing hole (2121) and each of the first fixing holes (2111) along the second direction (Y) and is connected to the vehicle frame (11).

3. The power supply vehicle according to claim 1, characterized in that: The battery module (211) comprises a first accommodating frame (2112), the liquid cooling plate and at least one battery unit, the liquid cooling plate is located at the inner bottom of the first accommodating frame (2112), the battery unit is located in the first accommodating frame (2112), and the upper part of the first accommodating frame (2112) is open; The control module (212) comprises a second containing frame (2122) and a control circuit, wherein the control circuit is arranged in the second containing frame (2122), and the upper part of the second containing frame (2122) is open; Among them, in any two adjacent layers of the first accommodating frames (2112), the first accommodating frame (2112) located at the upper part covers the opening of the first accommodating frame (2112) located at the lower part; and the second accommodating frame (2122) covers the opening of the first accommodating frame (2112) located at the lower part of the second accommodating frame (2122).

4. The power supply vehicle according to claim 3, characterized in that: The battery cluster (21) also includes an upper cover plate (213), and the upper cover plate (213) covers the opening of the second containing frame (2122).

5. The power supply vehicle according to any one of claims 1 to 4, characterized in that: It also includes two baffle assemblies (7), which are arranged on the battery cluster (21) to respectively shield two sides of the energy storage system (2) along a third direction (Z), wherein the third direction (Z) intersects both the first direction (X) and the second direction (Y).

6. The power supply vehicle according to any one of claims 1 to 4, characterized in that: The charging and discharging device (4) comprises a DC charging and discharging module (41) and an AC charging and discharging module (42); the AC charging and discharging module (42) and the water cooling unit (3) are respectively arranged at two ends of the energy storage system (2) along the first direction (X); and the DC charging and discharging module (41) is arranged on the lower side of the vehicle frame (11).

7. The power supply vehicle according to claim 6, characterized in that: The DC charging and discharging module (41) comprises two front DC charging and discharging cabinets (411), the two front DC charging and discharging cabinets (411) being respectively arranged at the lower parts of both sides of the frame (11) and located in front of the rear wheels of the trailer (1), and at least one charging gun being arranged in the front DC charging and discharging cabinet (411).

8. The power supply vehicle according to claim 7, characterized in that: The DC charging and discharging module (41) further comprises two rear DC charging and discharging cabinets (412), the two rear DC charging and discharging cabinets (412) being respectively arranged at the lower part of both sides of the frame (11) and located behind the rear wheels of the trailer (1), and at least one charging gun being arranged in the rear DC charging and discharging cabinet (412).

9. The power supply vehicle according to claim 7, characterized in that: A plurality of adapter components (4111) are arranged in the front DC charging and discharging cabinet (411), one end of the adapter component (4111) is used for plugging into the charging gun, and the other end of the adapter component (4111) is used for plugging into an external charging gun.

10. The power supply vehicle according to claim 9, characterized in that: The adapter component (4111) comprises a first socket (41111), a connecting wire (41112) and a second socket (41113), two ends of the connecting wire (41112) are respectively connected to the first socket (41111) and the second socket (41113), one of the first socket (41111) and the second socket (41113) is used for plugging into the charging gun, and the other is used for plugging into an external charging gun; And / or, the plurality of battery clusters (21) are connected to the charging guns in the DC charging and discharging module (41) in a one-to-one correspondence; And / or, at least one AC charging and discharging port is provided in the AC charging and discharging module (42), and each of the battery clusters (21) is connected to the AC charging and discharging port via a switch.

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