Hydroelectric connector module and heavy truck battery box with same

Abstract

The utility model relates to a hydroelectric joint module and a heavy truck battery box with the hydroelectric joint module, the hydroelectric joint module comprises a shell arranged on a supporting frame, the shell is provided with a plurality of electric connectors, a plurality of electric input end groups and a water connector, the electric connectors and the electric input end groups are the same in number and are electrically connected in a one-to-one correspondence mode, and the water connector is electrically connected with the electric input end groups in a one-to-one correspondence mode. Each electric input end group is connected with the batteries in one battery placing space, the input end of the water connector is communicated with the batteries in all the battery placing spaces, and at least one battery is stored in each battery placing space. According to the utility model, the structure of the plurality of electric connectors is adopted, so that the plurality of batteries can supply power to the vehicle at the same time, the working efficiency is improved, the batteries in each battery placement space supply power to the vehicle through the respective corresponding electric input end group and the electric connector, regional management of the batteries is realized, and the vehicle safety is improved. The management and control strength on the power utilization state of the battery is improved, and rapid energy compensation of the heavy truck can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicles, in particular to a water and electricity connection module and a battery box for heavy trucks with the same. Background Art

[0002] With the continuous upgrading and improvement of new energy vehicle technologies and services, and the increasing acceptance of the general public, new energy vehicles are becoming more and more popular. The charging and battery swapping technologies for new energy sedans and new energy SUVs are becoming more and more mature, while there are still some deficiencies in the battery swapping services for large vehicles such as commercial vehicles and trucks.

[0003] At present, although some new energy charging and battery swapping stations can perform battery swapping for large vehicles such as commercial vehicles and trucks, due to the large size of large vehicles and the large battery specifications they carry, multiple batteries are usually combined into a battery box, and the battery box is replaced as a whole through the electrical connectors and water connectors on the battery box. However, using one electrical connector to supply power to the vehicle simultaneously for multiple batteries cannot effectively control the power consumption status of each battery accurately, there is a risk of damaging the battery, and there are certain potential safety hazards.

[0004] Therefore, there is a need for a water and electricity connection module and a battery box for heavy trucks with the same, which can supply power to the vehicle simultaneously for multiple batteries, improve work efficiency, manage the batteries regionally, improve the control over the power consumption status of each battery, and reduce potential safety hazards. Summary of the Invention

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a water and electricity connection module and a battery box for heavy trucks with the same.

[0006] The technical solution of the utility model is as follows:

[0007] A water and electricity connection module is arranged on the support frame of a battery box for heavy trucks. The support frame is provided with a plurality of battery placement spaces, and includes a housing arranged on the support frame. The housing is provided with a plurality of electrical connectors, a plurality of electrical input terminal groups, and a water connector. The number of the electrical connectors is the same as that of the electrical input terminal groups and they are electrically connected in one-to-one correspondence. Each electrical input terminal group is connected to a battery in one of the battery placement spaces. The input end of the water connector is communicated with the batteries in all the battery placement spaces, and at least one battery is placed in each battery placement space.

[0008] As a further improvement of the utility model, the housing includes an electric control box in a cuboid shape and an extension plate. The extension plate is connected to the top plate of the electric control box and is on the same horizontal plane. The electrical connectors are arranged on the top plate, and the water connector is arranged on the extension plate.

[0009] As a further improvement of the present utility model, the electrical input terminal group is arranged on the first side plate of the electrical control box close to the battery. The electrical connector includes an output positive electrode, an output negative electrode and a first communication interface. The electrical input terminal group includes an input positive electrode and an input negative electrode. A second communication interface is provided on the first side plate, and all the first communication interfaces are electrically connected to the second communication interface.

[0010] A battery box for a heavy truck includes an upper battery frame connected to a vehicle girder and a lower battery frame connected to the upper battery frame. The lower surface of the upper battery frame is flush with the lower surface of the girder, and the lower battery frame is located below the girder. Battery placement spaces for placing batteries are formed in both the upper battery frame and the lower battery frame. Two layers of batteries are provided on the lower battery frame. The first layer of battery is arranged in the battery placement space of the lower battery frame, and the second layer of battery is arranged on the upper surface of the lower battery frame. When the upper battery frame and the lower battery frame are assembled, the second layer of battery is located in the battery placement space of the upper battery frame. The above-mentioned water and electricity joint module is provided on the lower battery frame.

[0011] As a further improvement of the present utility model, the upper battery frame includes a plurality of longitudinal beams, a plurality of cross beams and a plurality of connecting beams. The longitudinal beams are arranged at intervals. The cross beams are arranged at intervals along the extending direction of the longitudinal beams and are connected to the longitudinal beams. The connecting beams are arranged on the longitudinal beams and extend in the height direction. The lower battery frame has the same structure as the upper battery frame.

[0012] As a further improvement of the present utility model, three battery placement spaces are provided in the upper battery frame. The three battery placement spaces are arranged side by side. One battery is placed in each battery placement space. The girder is arranged in and connected to the middle battery placement space. The length direction of the battery is the same as the extending direction of the girder. The width of the battery is less than the minimum clearance between two girders. The battery located in the middle position is arranged between two girders. The number of battery placement spaces in the lower battery frame is the same as and corresponds to the number of battery placement spaces in the upper battery frame one by one.

[0013] As a further improvement of the present utility model, the lower battery frame is provided with two layers of battery mounting brackets, namely a top battery mounting bracket and a bottom battery mounting bracket. Connecting bolts are provided between the top battery mounting bracket and the bottom battery mounting bracket. The top battery mounting bracket is docked with the upper battery frame. A quick locking mechanism is provided between the upper battery frame and the top battery mounting bracket. Three batteries are locked to the top battery mounting bracket, and the other three batteries are locked to the bottom battery mounting bracket.

[0014] As a further improvement of the present utility model, the quick locking mechanism includes a hanging member provided on the top battery mounting bracket and a locking and unlocking power device provided on the upper battery frame, and the locking and unlocking power device locks or unlocks the hanging member.

[0015] As a further improvement of the present utility model, a grounding shunt is provided on the electrical connector, a sealing plate is provided on the side of the bottom battery mounting bracket, and a sealing plate and a positioning sleeve are provided on the bottom of the bottom battery mounting bracket.

[0016] As a further improvement of the present utility model, the height of the crossbeam is 300 mm, the outer width is 850 mm or 860 mm, and the inner width is 690 mm or 700 mm; the height of the battery is less than 275 mm, and the width of the battery is less than 690 mm.

[0017] As a further improvement of the present utility model, the water and electricity connection joint module is arranged at the front end of the lower battery frame along the vehicle advancing direction. When the upper battery frame and the lower battery frame are assembled, the water and electricity connection joint module is located between the two crossbeams.

[0018] As a further improvement of the present utility model, a water-cooling plate is provided in the battery, and a water inlet and a water outlet are provided at one end of the battery close to the water and electricity connection joint module. The water inlets of all the batteries are connected to the water inlet end of the water and electricity connection joint module, and the water outlets of all the batteries are connected to the water outlet end of the water and electricity connection joint module; the positive electrodes of two batteries are connected to the same input positive electrode, and the negative electrodes of two batteries are connected to the same input negative electrode.

[0019] For the present utility model according to the above solution, the beneficial effects of the present utility model are as follows:

[0020] The present utility model adopts the structure of multiple electrical connectors to enable multiple batteries to supply power to the vehicle simultaneously, improving work efficiency. The batteries in each battery placement space supply power to the vehicle through their respective corresponding electrical input end groups and electrical connectors, realizing regional management of the batteries, enhancing the control over the power consumption status of the batteries, effectively avoiding unnecessary damage to the batteries caused by insufficient control, reducing potential safety hazards, and enabling rapid energy replenishment of heavy trucks. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the water and electricity connection joint module of the present utility model;

[0022] Figure 2 is a schematic structural diagram of the electric control box of the present utility model;

[0023] Figure 3 is a schematic structural diagram of the electrical connector of the present utility model;

[0024] Figure 4 It is a schematic perspective view of the battery box for heavy trucks of the present utility model;

[0025] Figure 5 It is a schematic perspective view of the upper battery frame of the present utility model Figure 1 ;

[0026] Figure 6 It is a schematic perspective view of the upper battery frame of the present utility model Figure 2 ;

[0027] Figure 7 It is a schematic perspective view of the upper battery frame without the outer side plate of the present utility model;

[0028] Figure 8 It is a schematic perspective view of the lower battery frame of the present utility model Figure 1 ;

[0029] Figure 9 It is a schematic perspective view of the lower battery frame of the present utility model Figure 2 ;

[0030] Figure 10 It is a schematic perspective view of the lower battery frame without the outer side plate of the present utility model Figure 1 ;

[0031] Figure 11 It is a schematic perspective view of the lower battery frame without the outer side plate of the present utility model Figure 2 ;

[0032] Figure 12 It is a schematic view of the placement structure of the two - layer battery of the present utility model Figure 1 ;

[0033] Figure 13 It is a schematic view of the placement structure of the two - layer battery of the present utility model Figure 2 .

[0034] In the figure: 1, main beam; 21, upper battery frame; 211, longitudinal beam; 212, cross beam; 213, connecting beam; 214, outer plate; 22, lower battery frame; 221, top battery mounting bracket; 222, bottom battery mounting bracket; 23, battery; 31, electrical connector; 311, output positive electrode; 312, output negative electrode; 313, first communication interface; 314, grounding shunt; 315, guide post; 32, water connector; 321, water inlet end; 322, water outlet end; 33, electric control box; 331, top plate; 332, first side plate; 333, second communication interface; 334, third communication interface; 34, extension plate; 35, input positive electrode; 36, input negative electrode; 37, breather valve; 38, grounding bus; 39, debugging port; 41, quick connection socket; 42, quick connection plug; 51, positioning pin; 52, positioning hole. Detailed implementation manners

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0036] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0037] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0038] See Figure 1 and Figure 2, the present utility model provides a water and electricity connection module, which is arranged on the support frame of the battery box for heavy trucks. The support frame is provided with a plurality of battery placement spaces. The water and electricity connection module includes a housing arranged on the support frame. The housing is provided with a plurality of electrical connectors 31, a plurality of electrical input terminal groups, and a water connector 32. Both the electrical connectors 31 and the water connector 32 are connected to the corresponding battery interfaces on the vehicle. The number of electrical connectors 31 is the same as that of the electrical input terminal groups and they are connected to each other in one-to-one correspondence. Preferably, the number of both the electrical connectors 31 and the electrical input terminal groups is three, making the overall volume smaller and more suitable for the vehicle. Each electrical input terminal group is connected to a battery 23 in one battery placement space, that is, each electrical input terminal group is connected to at least one battery 23. One battery 23 supplies power to the vehicle through the corresponding electrical input terminal group and electrical connector 31 in sequence. The input end of the water connector 32 is communicated with the batteries 23 in all battery placement spaces. According to specific usage requirements, the number of water connectors 32 can also be appropriately increased or decreased. When the number of water connectors 32 is two or more, each water connector 32 is communicated with part of the battery placement spaces for even distribution. At least one battery 23 is stored in each battery placement space. Preferably, two batteries 23 are stored in each battery placement space. The structure of using a plurality of electrical connectors 31 in the present utility model can enable multiple batteries 23 to supply power to the vehicle simultaneously, improving work efficiency. The batteries 23 in each battery placement space supply power to the vehicle through their respective corresponding electrical input terminal groups and electrical connectors 31, realizing regional management of the batteries 23, improving the control strength of the power consumption state of the batteries 23, effectively avoiding unnecessary damage to the batteries 23 caused by insufficient control, reducing potential safety hazards, and enabling rapid energy replenishment of heavy trucks.

[0039] As an embodiment of the present utility model, the housing includes an electronic control box 33 in the shape of a cuboid and an extension plate 34. The extension plate 34 is connected to the top plate 331 of the electronic control box 33 and is on the same horizontal plane. The electrical connectors 31 are arranged on the top plate 331, and the water connector 32 is arranged on the extension plate 34, which can enable the electrical connectors 31 and the water connector 32 to be more smoothly connected to the battery interfaces on the vehicle, improving the combination efficiency with the vehicle. The electrical parts are all arranged on the electronic control box 33, and the relevant connection circuits are arranged in the electronic control box 33, effectively realizing the separation of water and electricity, avoiding the risk of short circuit caused by the contact between water vapor and the circuit part during the power supply process to the vehicle, avoiding damage to electrical components, and improving the safety of the water and electricity connection module.

[0040] As an embodiment of the present utility model, the arrangement of the electrical connectors 31 is consistent with the arrangement of the corresponding interfaces on the vehicle. The arrangement of the electrical connectors 31 has the following two structures:

[0041] Structure 1: All the electrical connectors 31 are arranged in a straight line and aligned with the water connector 32, that is, the electrical connectors 31 and the water connector 32 are arranged in a straight line;

[0042] Structure 2: All the electrical connectors 31 are arranged in a straight line, and the water connector 32 is arranged on the side of the electrical connectors 31, that is, the water connector 32 is not on the straight line where the electrical connectors 31 are located;

[0043] Structure 3: Make a reasonable plan according to the specific number of the electrical connectors 31. When the number of the electrical connectors 31 is even, all the electrical connectors 31 are arranged in an array. For example, when the number of the electrical connectors 31 is four, the four electrical connectors 31 are arranged in a 2×2 array. For example, when the number of the electrical connectors 31 is six, the six electrical connectors 31 are arranged in a 3×2 or 2×3 array, and any row of the array is aligned with the water connector 32. When the number of the electrical connectors 31 is odd, all the electrical connectors 31 are arranged in an array, and the notch of the array is aligned with the water connector 32. For example, when the number of the electrical connectors 31 is three, the three electrical connectors 31 are arranged in an incomplete 2×2 array, and the notch of the array is aligned with the water connector 32. After the addition of the water connector 32, the three electrical connectors 31 and one water connector 32 are integrally combined into a slightly defective 2×2 array.

[0044] As an embodiment of the present invention, the electrical connectors 31 are arranged in Structure 2, and the distance between adjacent two electrical connectors 31 is equal, which improves the overall unity and ornamental property, and can also avoid the situation that the distance between adjacent two electrical connectors 31 is too small and affects the combination between the electrical connectors 31 and the battery interface on the vehicle, improving the practicability and reliability of the water and electricity joint module. At the same time, it avoids the situation that the distance between adjacent two electrical connectors 31 is too large and increases the overall occupied space of the water and electricity joint module, effectively reducing the working space and saving the use cost.

[0045] As an embodiment of the present invention, the electrical input end group is arranged on the first side plate 332 of the electrical control box 33 close to the battery 23. The lengths of the three edges of the electrical control box 33 are x, y, and z respectively. The electrical control box 33 has two xy planes, two xz planes and two yz planes. The area of the xy plane is a1, the area of the xz plane is a2, and the area of the yz plane is a3. Assuming x>y>z, then a1>a2>a3. Since the occupied space of the electrical input end group is larger than the occupied space of the electrical connectors 31, the top plate 331 is the xz plane, and the first side plate 332 is the xy plane, which is convenient for the inspection and maintenance of the electrical input end group.

[0046] See Figure 3, as an embodiment of the present utility model, the electrical connector 31 includes an output positive electrode 311, an output negative electrode 312, and a first communication interface 313. The electrical input terminal group includes an input positive electrode 35 and an input negative electrode 36. The input positive electrode 35 is electrically connected to the output positive electrode 311, and the input negative electrode 36 is electrically connected to the output negative electrode 312. A second communication interface 333 is provided on the first side plate 332. All the first communication interfaces 313 are electrically connected to the second communication interface 333, and the second communication interface 333 is electrically connected to the control terminal of the vehicle. Thus, the power supply state of the electrical connector 31 can be obtained in real time, the power supply data and information of the battery can be mastered, and the control strength of the battery power supply process can be improved. When an abnormality occurs, the operator can discover and handle it in time, which can effectively avoid unnecessary damage to the battery caused by insufficient control and reduce potential safety hazards.

[0047] As an embodiment of the present utility model, a third communication interface 334 is provided on the first side plate 332. The third communication interface 334 is an internal communication interface, that is, it realizes the communication between the battery 23 and the BMS.

[0048] As an embodiment of the present utility model, a breather valve 37 is provided on the housing, which can effectively prevent impurities such as moisture and dust from entering the interior of the housing, protect the electrical components and circuits inside the housing from environmental factors such as oxidation and moisture; and allow gas to pass through, which can prevent the accumulated gas from forming an explosive mixture inside the housing, reduce the gas concentration, and thus avoid the danger of gas explosion; at the same time, it can balance the pressure difference inside and outside the housing and ensure the normal operation of the water and electricity joint module.

[0049] As an embodiment of the present utility model, a grounding shunt 314 is provided on the electrical connector 31, and a grounding bus 38 is provided on the housing. All the grounding shunts 314 are electrically connected to the grounding bus 38, which can effectively avoid the risk of electric shock to the operator and improve safety.

[0050] As an embodiment of the present utility model, at least one guiding post 315 is provided around the electrical connector 31, which can play a guiding role in the combination of the battery interface on the vehicle and the electrical connector 31, and improve the combination efficiency between the battery connector and the electrical connector 31. Preferably, there are two guiding posts 315.

[0051] As an embodiment of the present utility model, a sealing ring is provided on the edge of the electrical connector 31. While protecting the electrical components inside the housing, it can prevent the electric arc from leaking during the power supply process and improve the overall safety.

[0052] As an embodiment of the present utility model, a debugging port 39 is provided on the housing. By connecting a testing device to the debugging port 39, an operator can perform functional tests on the water and electricity connection module, can conduct tests before the water and electricity connection module is put into use, and can also retrieve and detect internal data of the battery, such as the state of charge SOC, the state of health SOH of the battery, etc., which can improve the working stability and safety.

[0053] Referring to Figure 4 -13, the present utility model provides a battery box for a heavy truck, which includes an upper battery frame 21 connected to a vehicle frame 1 and a lower battery frame 22 connected to the upper battery frame 21. There are two vehicle frames 1. To ensure the strength and stability of the vehicle frame 1, reinforcing ribs are provided on the two vehicle frames 1. The reinforcing ribs connect the two vehicle frames 1, which can reinforce the vehicle frame 1 and ensure sufficient strength after the battery frame is arranged on the vehicle frame 1. The lower surface of the upper battery frame 21 is flush with the lower surface of the vehicle frame 1, and the lower battery frame 22 is located below the vehicle frame 1; a battery placement space for placing the battery 23 is formed in both the upper battery frame 21 and the lower battery frame 22. Two layers of batteries 23 are provided on the lower battery frame 22. The first layer of battery 23 is arranged in the battery placement space of the lower battery frame 22, and the second layer of battery 23 is arranged on the upper surface of the lower battery frame 22. When the upper battery frame 21 and the lower battery frame 22 are assembled, the second layer of battery 23 is located in the battery placement space of the upper battery frame 21. The above-mentioned water and electricity connection module 3 is provided on the lower battery frame 22. When the lower battery frame 22 and the upper battery frame 21 are assembled, the water and electricity connection module 3 cooperates with the water and electricity connection module on the vehicle to realize the connection between the battery box for a heavy truck and the vehicle.

[0054] As an embodiment of the present utility model, the upper battery frame 21 includes a plurality of longitudinal beams 211, a plurality of cross beams 212 and a plurality of connecting beams 213. The longitudinal beams 211 are arranged at intervals, and the distance between two adjacent longitudinal beams 211 is equal. Of course, it can also be set to unequal distances, but it is necessary to ensure that it is greater than or equal to the width of the battery 23. Moreover, if the set distances are unequal, after the upper battery frame 21 is connected to the girder 1, it is easy to cause the upper battery frame 21 to tilt and the forces on both sides are uneven. In this solution, four longitudinal beams 211 are provided, and the distance between two adjacent longitudinal beams 211 is equal, and the distance between two adjacent longitudinal beams 211 is greater than or equal to the width of the battery 23; the cross beams 212 are arranged at intervals along the extending direction of the longitudinal beams 211 and are connected to the longitudinal beams 211. Each cross beam 212 is connected to each longitudinal beam 211. Of course, it can also be set that each cross beam is connected to two adjacent longitudinal beams 211. For example, there are four longitudinal beams 211 arranged from left to right, and four cross beams 212 are arranged from front to back along the extending direction of the longitudinal beams 211. The first cross beam is connected to all four longitudinal beams, the second cross beam is connected to all four longitudinal beams, the third cross beam is connected to all four longitudinal beams, and the fourth cross beam is also connected to all four longitudinal beams. Or, four parallel and spaced cross beams are arranged and connected between the first longitudinal beam and the second longitudinal beam, four parallel and spaced cross beams are arranged and connected between the second longitudinal beam and the third longitudinal beam, and four parallel and spaced cross beams are arranged and connected between the third longitudinal beam and the fourth longitudinal beam; the connecting beams 213 are arranged on the longitudinal beams 211 and extend in the height direction, that is, both ends of the connecting beam 213 are connected to the longitudinal beams 211. The connecting beam 213 is perpendicular to the longitudinal beam 211, and the connecting beam 213 extends in the height direction. The setting of the connecting beam 213 can not only be used for connection, but also ensure the strength of the upper battery frame 21. The number of connecting beams 213 arranged on each longitudinal beam 211 is not limited, as long as the connection and strength are ensured. In this solution, four connecting beams 213 are arranged on each longitudinal beam 211. The length of the connecting beam 213 is greater than or equal to the height of the battery 23 to ensure the placement of the battery 23; preferably, the lower battery frame 22 has the same structure as the upper battery frame 21.

[0055] As an embodiment of the present utility model, there are three battery placement spaces provided in the upper battery frame 21. The three battery placement spaces are arranged side by side. The middle one is the second battery placement space, and the first placement space and the third placement space are located on both sides of the second placement space. One battery 23 is placed in each battery placement space. The main beam 1 is arranged in and connected to the middle battery placement space. That is, after the upper battery frame 21 is connected to the main beam 1, the main beam 1 passes through the second battery placement space and is connected to the upper battery frame 21. The first placement space and the third placement space are located on both sides of the main beam 1 to ensure balance. The length direction of the battery 23 is the same as the extension direction of the main beam 1. The width of the battery 23 is less than the minimum clearance between the two main beams 1. The battery 23 in the middle position is arranged between the two main beams 1. Preferably, the width of the battery 23 is less than 690 mm. The number of battery placement spaces in the lower battery frame 22 is the same as and corresponds one by one to the battery placement spaces in the upper battery frame 21. Of course, the number of battery placement spaces can also be set to five, seven or more, but it should adapt to the width of the vehicle to avoid protruding from both sides of the vehicle.

[0056] As an embodiment of the present utility model, the lower battery frame 22 is provided with two layers of battery mounting brackets, namely a top battery mounting bracket 221 and a bottom battery mounting bracket 222. A connecting bolt is provided between the top battery mounting bracket 221 and the bottom battery mounting bracket 222 to achieve the detachable connection between the top battery mounting bracket 221 and the bottom battery mounting bracket 222. The top battery mounting bracket 221 is docked with the upper battery frame 21. A quick locking mechanism is provided between the upper battery frame 21 and the top battery mounting bracket 221 to achieve the quick disassembly between the upper battery frame 21 and the top battery mounting bracket 221. Three batteries 23 are locked on the top battery mounting bracket 221, and the other three batteries 23 are locked on the bottom battery mounting bracket 222, which can ensure the installation stability of the first layer of battery 23 and the second layer of battery 23.

[0057] As an embodiment of the present utility model, the quick locking mechanism includes a hanging member provided on the top battery mounting bracket 221 and a locking and unlocking power device provided on the upper battery frame 21. The locking and unlocking power device locks or unlocks the hanging member. That is, when the upper battery frame 21 and the top battery mounting bracket 221 are assembled, the locking and unlocking power device acts to lock the hanging member. When the upper battery frame 21 and the top battery mounting bracket 221 are separated, the locking and unlocking power device acts to unlock the hanging member.

[0058] As an embodiment of the present utility model, a sealing plate is provided on the side of the bottom battery mounting bracket 222, and a sealing plate and a positioning sleeve are provided on the bottom of the bottom battery mounting bracket 222. The sealing plate can protect the battery 23 from being invaded by foreign matters such as sediment and coal ash. The positioning sleeve is used for the positioning of the battery swapping trolley and the battery box when installing or disassembling the battery box.

[0059] As an embodiment of the present utility model, when the battery box for heavy trucks is installed on a vehicle, the top of the second-layer battery 23 is lower than the upper part of the crossbeam 1, and the bottom mounting surface of the second-layer battery 23 is slightly lower than the crossbeam 1. Preferably, the height of the crossbeam 1 is 300 mm, the outer width is 850 mm or 860 mm, and the inner width is 690 mm or 700 mm; the height of the battery 23 is less than 275 mm.

[0060] As an embodiment of the present utility model, the water and electricity connection module 3 is arranged at the front end of the lower battery frame 22 along the vehicle's forward direction. When the upper battery frame 21 and the lower battery frame 22 are assembled, the water and electricity connection module 3 is located between the two crossbeams 1, which can avoid unnecessary interference and collision between the water and electricity connection module 3 and the upper battery frame 21 or the crossbeam 1 during the assembly process of the upper battery frame 21 and the lower battery frame 22.

[0061] As an embodiment of the present utility model, a water-cooling plate is provided inside the battery 23. An inlet and an outlet are provided at one end of the battery 23 close to the water and electricity connection module 3. The inlets of all the batteries 23 are connected to the water inlet end 321 of the water and electricity connection module 3, and the outlets of all the batteries 23 are connected to the water outlet end of the water and electricity connection module 3; the positive electrodes of two batteries 23 are connected to the same input positive electrode 35, and the negative electrodes of two batteries 23 are connected to the same input negative electrode 36. The battery cables and water circuits inside the battery box are arranged simply, and cooling components such as cooling fans or water-cooling units are additionally provided. Compared with the top-hanging mode, this method can greatly simplify the internal structure of the battery box, and thus improve the energy density of the battery box while increasing the capacity of the battery box.

[0062] As an embodiment of the present utility model, to ensure the quick alignment of the upper battery frame 21 and the lower battery frame 22 and the precise connection between the upper battery frame 21 and the lower battery frame 22, positioning holes 52 are provided on the upper battery frame 21. At least two positioning holes 52 are provided. Positioning pins 51 are provided on the lower battery frame 22, and the positioning pins 51 are arranged opposite to the positioning holes 52. When the positioning pins 51 are inserted into the positioning holes 52, the upper battery frame 21 and the lower battery frame 22 are aligned. In this solution, four positioning holes 52 are provided, and the four positioning holes 52 are respectively arranged at the four corners of the upper battery frame 21. Four positioning pins 51 are also provided and are arranged in cooperation with the positioning holes 52.

[0063] As an embodiment of the present utility model, in order to ensure the quick and accurate connection between the upper battery frame 21 and the lower battery frame 22, a quick connection structure is provided. The quick connection structure includes a quick connection seat 41 provided on the upper battery frame 21 and a quick connection plug 42 provided on the lower battery frame 22. The quick connection seat 41 is provided on the side of the upper battery frame 21 close to the lower battery frame 22, and the quick connection plug 42 is correspondingly arranged with the quick connection seat 41. When the quick connection plug is inserted into the quick connection seat 41, it indicates that the docking of the upper battery frame 21 and the lower battery frame 22 is completed. After the quick connection seat 41 is connected to the quick connection plug, the connection between the upper battery frame 21 and the lower battery frame 22 is completed. Since the battery box mounting bracket equipped with the battery 23 has a relatively large mass, in order to ensure the reliable connection between the upper and lower battery frames, multiple quick connection structures are provided. In this solution, twelve quick connection structures are provided and are arranged on the longitudinal beam 211, with three arranged on each longitudinal beam 211. At the same time, the quick connection structure can also achieve the quick separation and connection between the upper battery frame 21 and the lower battery frame 22 during battery maintenance, reducing the cumbersome steps during battery 23 maintenance.

[0064] The specific connection method between the upper and lower battery frames and the vehicle frame 1 is as follows:

[0065] Place the batteries 23 in the three battery placement spaces of the lower battery frame 22 respectively. After the batteries 23 are placed, install the middle cross beam 212 on the lower battery frame 22, and then arrange another layer of battery 23 on the upper surface of the lower battery frame 22. Quickly position the upper battery frame 21 and the lower battery frame 22 through the positioning pins 51 and the positioning holes 52, and achieve quick docking through the quick connection structure. At this time, the three batteries 23 located on the lower battery frame 22 are within the battery placement spaces of the upper battery frame 21. After the connection between the upper and lower battery frames is completed, connect the upper battery frame 21 to the connection frame to achieve connection with the vehicle.

[0066] In summary, the present utility model provides a water and electricity connection module and a battery box for heavy trucks having the same. The structure of multiple electrical connectors 31 can enable multiple batteries to supply power to the vehicle simultaneously, improving work efficiency. The batteries in each battery placement space supply power to the vehicle through their respective corresponding electrical input terminal groups and electrical connectors 31, achieving regional management of the batteries 23, enhancing the control intensity over the power consumption status of the batteries 23, effectively avoiding unnecessary damage to the batteries 23 caused by insufficient control, and reducing potential safety hazards; the electrical parts are all arranged on the electrical control box 33, and the relevant connection circuits are arranged inside the electrical control box 33, effectively achieving separation of water and electricity, avoiding the risk of short circuit caused by the contact between water vapor and the circuit part during the power supply to the vehicle, avoiding damage to electrical components, and improving the safety of the water and electricity connection module; the distance between adjacent two electrical connectors 31 is equal, improving the overall unity and ornamental value, and also being able to avoid the combination between adjacent two electrical connectors 31 being affected due to too small a distance, improving the practicality and reliability of the water and electricity connection module, and at the same time avoiding increasing the overall occupied space of the water and electricity connection module due to too large a distance between adjacent two electrical connectors 31, effectively reducing the working space and saving usage costs; the second communication interface 333 is electrically connected to the control end of the vehicle, can obtain the power supply status of the electrical connector 31 in real time, master the power supply data and information of the battery 23, enhance the control intensity over the power supply process of the battery 23, and when an abnormality occurs, the operator can discover and handle it in time, effectively avoiding unnecessary damage to the battery caused by insufficient control, and reducing potential safety hazards; the breather valve 37 can effectively prevent impurities such as moisture and dust from entering the interior of the housing, protect the electrical components and circuits inside the housing from environmental factors such as oxidation and moisture, and can also prevent the accumulated gas from forming an explosive mixture inside the housing, reducing the gas concentration, thereby avoiding the risk of gas explosion, and at the same time being able to balance the pressure difference inside and outside the housing to ensure the normal operation of the water and electricity connection module; by arranging a plurality of cross beams 212, a plurality of longitudinal beams 211 and a plurality of connecting beams 213 to connect and form the upper battery frame 21 and the lower battery frame 22, the structure is simple and the operation is convenient; arranging the upper battery frame 21 and the lower battery frame 22 can realize the arrangement of multiple batteries 23. Currently, the battery placement is mostly in one layer, and this solution can realize the placement of two layers of batteries 23, being able to place more batteries 23 compared with other structures, and at the same time being hidden at the vehicle frame 1, saving space; arranging the positioning pin 51 and the positioning hole 52 can realize the rapid positioning of the upper battery frame 21 and the lower battery frame 22, and arranging the quick connection structure can realize the rapid connection of the battery 23, completing the disassembly and assembly of the battery more quickly and conveniently than the prior art.

[0067] It should be emphasized that the above are only the preferred embodiments of the present utility model, and there is no restriction on the present utility model in any form. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A hydroelectric connection module is provided on the support frame of a battery box for a heavy truck. The support frame is provided with a plurality of battery placement spaces, and is characterized in that, It includes a housing arranged on the support frame, on which a plurality of electrical connectors (31), a plurality of electrical input terminal groups, and a water connector (32) are provided. The number of the electrical connectors (31) is the same as that of the electrical input terminal groups and they are electrically connected in one-to-one correspondence. Each electrical input terminal group is connected to a battery (23) in the battery placement space. The input end of the water connector (32) communicates with the batteries (23) in all the battery placement spaces, and at least one battery (23) is stored in each battery placement space.

2. The water and electricity connection module according to claim 1, wherein The housing includes an electric control box (33) in the shape of a cuboid and an extension plate (34). The extension plate (34) is connected to the top plate (331) of the electric control box (33) and is on the same horizontal plane. The electrical connectors (31) are arranged on the top plate (331), and the water connector (32) is arranged on the extension plate (34).

3. The water and electricity connection module according to claim 2, characterized in that, The electrical input terminal groups are arranged on the first side plate (332) of the electric control box (33) close to the battery (23). The electrical connector (31) includes an output positive electrode (311), an output negative electrode (312), and a first communication interface (313). The electrical input terminal group includes an input positive electrode (35) and an input negative electrode (36). A second communication interface (333) is provided on the first side plate (332), and all the first communication interfaces (313) are electrically connected to the second communication interface (333).

4. A battery box for heavy trucks, characterized in that, It includes an upper battery frame (21) connected to the vehicle beam (1) and a lower battery frame (22) connected to the upper battery frame (21). The lower surface of the upper battery frame (21) is flush with the lower surface of the beam (1), and the lower battery frame (22) is located below the beam (1). Battery placement spaces for placing batteries (23) are formed in both the upper battery frame (21) and the lower battery frame (22). Two layers of batteries (23) are arranged on the lower battery frame (22). The first layer of the battery (23) is arranged in the battery placement space of the lower battery frame (22), and the second layer of the battery (23) is arranged on the upper surface of the lower battery frame (22). When the upper battery frame (21) and the lower battery frame (22) are assembled, the second layer of the battery (23) is located in the battery placement space of the upper battery frame (21). The lower battery frame (22) is provided with a water and electricity connection module (3) as described in any one of claims 1 - 3.

5. The battery box for heavy trucks according to claim 4, wherein The upper battery frame (21) includes a plurality of longitudinal beams (211), a plurality of cross beams (212), and a plurality of connecting beams (213). The longitudinal beams (211) are arranged at intervals. The cross beams (212) are arranged at intervals along the extension direction of the longitudinal beams (211) and are connected to the longitudinal beams (211). The connecting beams (213) are arranged on the longitudinal beams (211) and extend in the height direction. The lower battery frame (22) has the same structure as the upper battery frame (21).

6. The battery box for heavy trucks according to claim 4, wherein, There are three battery placement spaces provided in the upper battery frame (21), and the three battery placement spaces are arranged side by side. One battery (23) is placed in each battery placement space. The main beam (1) is arranged in and connected to the middle battery placement space. The length direction of the battery (23) is the same as the extension direction of the main beam (1). The width of the battery (23) is less than the minimum clearance between the two main beams (1). The battery (23) located in the middle position is arranged between the two main beams (1); the number of battery placement spaces in the lower battery frame (22) is the same as and corresponds one by one to the battery placement spaces in the upper battery frame (21).

7. The battery box for heavy-duty trucks according to claim 6, characterized in that The lower battery frame (22) is provided with two layers of battery mounting brackets, namely a top battery mounting bracket (221) and a bottom battery mounting bracket (222). Connecting bolts are provided between the top battery mounting bracket (221) and the bottom battery mounting bracket (222). The top battery mounting bracket (221) is butted against the upper battery frame (21). A quick locking mechanism is provided between the upper battery frame (21) and the top battery mounting bracket (221). Three batteries (23) are locked to the top battery mounting bracket (221), and another three batteries (23) are locked to the bottom battery mounting bracket (222).

8. The battery box for heavy truck according to claim 7, characterized in that, The quick locking mechanism includes a hanging part provided on the top battery mounting bracket (221) and a locking and unlocking power device provided on the upper battery frame (21). The locking and unlocking power device locks or unlocks the hanging part.

9. The battery box for heavy-duty trucks according to claim 7, wherein Sealing plates are provided on the side of the bottom battery mounting bracket (222), and sealing plates and positioning sleeves are provided on the bottom of the bottom battery mounting bracket (222).

10. The battery box for heavy truck according to claim 6, wherein, The height of the main beam (1) is 300 mm, the outer width is 850 mm or 860 mm, and the inner width is 690 mm or 700 mm; the height of the battery (23) is less than 275 mm, and the width of the battery (23) is less than 690 mm.

11. The battery box for heavy truck according to claim 6, characterized in that, The water and electricity connection module (3) is arranged at the front end of the lower battery frame (22) along the vehicle forward direction. When the upper battery frame (21) and the lower battery frame (22) are assembled, the water and electricity connection module (3) is located between the two main beams (1).

12. The battery box for heavy truck according to claim 4, wherein, A water-cooling plate is provided in the battery (23). An inlet and an outlet are provided at one end of the battery (23) close to the water and electricity connection module (3). The inlets of all the batteries (23) are connected to the water inlet end (321) of the water and electricity connection module (3), and the outlets of all the batteries (23) are connected to the water outlet end of the water and electricity connection module (3); the positive electrodes of two batteries (23) are connected to the same input positive electrode (35), and the negative electrodes of two batteries (23) are connected to the same input negative electrode (36).

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