Battery module and chassis structure applied to new energy commercial vehicle

Abstract

The invention discloses a battery module applied to a new energy commercial vehicle and a chassis structure, and relates to the technical field of new energy commercial vehicles. The battery module comprises a battery box and a penetrating type longitudinal beam. A first electricity storage space, a second electricity storage space, a third space and a fourth space exist in the battery box. The third space is located at the top of the battery box, the fourth space is located below the third space, and the first electricity storage space and the second electricity storage space which are arranged on the two sides of the penetrating type longitudinal beam communicate with each other through the fourth space. The middle section of the hollow penetrating type longitudinal beam is arranged in the third space, and the first end and the second end of the penetrating type longitudinal beam are exposed outside. The first electricity storage space and the second electricity storage space are used for directly placing battery cells, and the fourth space is used for directly placing the battery cells and / or spreading fireproof substances. Therefore, through the design of the penetrating type longitudinal beams, the strength of the battery box is greatly improved while the energy density of the battery box is ensured, and the safety of the battery box is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy commercial vehicles, and in particular to a battery module and a chassis structure used in new energy commercial vehicles. Background Art

[0002] With the gradual development of new energy technology, more and more commercial vehicles are also applying new energy technology. Usually, commercial vehicles use electricity as the main energy source, and drive the commercial vehicles through components such as electric motors and electric drive axles.

[0003] In the prior art, the battery system of new energy commercial vehicles usually adopts the form of a combination of a standard box and a battery frame.

[0004] However, this method is modified based on traditional chemical energy commercial vehicles. For new energy commercial vehicles, there are problems such as structural redundancy, low energy density, complex structure and heavy weight. Summary of the invention

[0005] This specification provides a battery module and chassis structure applied to new energy commercial vehicles to at least partially solve the above-mentioned problems existing in the prior art.

[0006] This manual adopts the following technical solutions: This specification provides a battery module for new energy commercial vehicles, including a battery box and a through-type longitudinal beam; The battery box contains a first power storage space, a second power storage space, a third space and a fourth space; The third space is located at the top of the battery box, and the fourth space is located below the third space; the first power storage space and the second power storage space are respectively arranged on both sides of the third space and the fourth space; the first power storage space and the second power storage space are connected through the fourth space; The through-type longitudinal beam is a hollow tubular structure, the middle section of the through-type longitudinal beam is arranged in the third space, the first end and the second end of the through-type longitudinal beam respectively pass through the battery box and are exposed to the outside, the internal space of the through-type longitudinal beam is connected to the outside of the battery box, and the outer wall of the through-type longitudinal beam and the inner wall of the battery box enclose a closed space; The first power storage space and the second power storage space are used for directly placing battery cells, and the fourth space is used for directly placing battery cells and / or transporting fireproof materials.

[0007] Preferably, the battery module applied to new energy commercial vehicles further includes a front fixing member and a rear fixing member; The front fixing member is fixedly connected to the first end of the through-type longitudinal beam and to the outer surface of the battery box, and is used to be connected to the front frame of the new energy commercial vehicle; The rear fixing member is fixedly connected to the second end of the through-type longitudinal beam and to the outer surface of the battery box, and is used to be connected to the rear frame of the new energy commercial vehicle.

[0008] Preferably, the battery box further comprises a first side plate and a second side plate which are arranged opposite to each other; The surfaces of the first side plate and the second side plate are both provided with through holes, and the sizes of the through holes are adapted to the through-type longitudinal beams; The first end and the second end of the through-type longitudinal beam respectively pass through the through hole and are exposed to the outside; The first side plate is fixedly connected to the front fixing member; The second side plate is fixedly connected to the rear fixing member.

[0009] Preferably, the battery module applied to new energy commercial vehicles further includes a front suspension component and a rear suspension component; The front suspension assembly and the rear suspension assembly both include a lifting member and a fixing connecting member; The lifting member can be tightly attached to the bottom of the battery box, the fixed connecting member of the front suspension component can be fixedly connected to the front fixing member; the fixed connecting member of the rear suspension component can be fixedly connected to the rear fixing member.

[0010] Preferably, the battery box includes a plurality of box cross beams, a plurality of box longitudinal beams and a plurality of support beams; The main body of the through-type longitudinal beam is located inside the battery box, and the through-type longitudinal beam, the multiple box cross beams, the multiple box longitudinal beams and the multiple support beams are connected to each other.

[0011] Preferably, the battery module applied to new energy commercial vehicles further includes at least one extended battery box, and a plurality of extended battery connectors are arranged at the bottom of the extended battery box, and a plurality of extended interfaces are arranged at the top of the extended battery box; The top of the battery box is configured with multiple expansion interfaces and / or multiple fixed interfaces, and the multiple expansion interfaces are respectively adapted to the multiple expansion battery connectors; The third side panel of the battery box is configured with a charging interface and / or a plurality of fixing interfaces.

[0012] Preferably, the first end and the second end are respectively opened, and the hollow through-type longitudinal beam can accommodate the connection pipeline to pass through.

[0013] Preferably, the battery module used in new energy commercial vehicles further includes a fireproof component; A plurality of through holes are provided at the bottom of the through-type longitudinal beam, and the fireproof component is arranged inside the through-type longitudinal beam; The fireproof component can be activated, and the fireproof component in the activated state can release the fireproof substance, and the fireproof substance can pass through the multiple through holes and be released into the fourth space.

[0014] Preferably, the fire protection assembly includes a connecting pipeline, a sprinkler pump, a plurality of sprinkler parts, a temperature sensor and / or a smoke sensor; The positions of the plurality of spraying parts are adapted to the through holes provided at the bottom of the through-type longitudinal beam and face the fourth space; The connecting pipeline is connected to the plurality of spray elements respectively, and the connecting pipeline is also connected to the cooling system of the new energy commercial vehicle; The spray pump is arranged in the connecting pipeline, and the spray pump is communicatively connected with the temperature sensor and / or the smoke sensor, can receive the alarm signal sent by the temperature sensor and / or the smoke sensor, start in response to the alarm signal, and transport the coolant in the cooling system to the multiple spray parts.

[0015] Preferably, the cooling system and / or the connecting pipeline is further provided with an external interface, and the external interface can be opened to provide fire extinguishing liquid to the multiple spray elements.

[0016] Preferably, the battery module used in new energy commercial vehicles further includes a fireproof component; The fire protection assembly is arranged in the fourth space.

[0017] Preferably, the fire protection assembly includes a first container, a second container, a connecting valve, a temperature sensor and / or a smoke sensor; The communication valve is disposed between the first container and the second container, and the communication valve can be opened and closed; the communication valve in a closed state is used to isolate the material transfer in the first container and the second container; the communication valve in an open state can allow the material transfer between the first container and the second container; The first container stores a first fire-proof component, the second container stores a second fire-proof component, and the first fire-proof component and the second fire-proof component can generate a large amount of fire-proof material after mixing; The connecting valve is also communicatively connected with the temperature sensor and / or the smoke sensor, and is capable of receiving an alarm signal sent by the temperature sensor and / or the smoke sensor, and switching to an open state in response to the alarm signal.

[0018] Preferably, the battery box includes a plurality of box cross beams, a plurality of box longitudinal beams and a plurality of support beams; The main body of the through-type longitudinal beam is located inside the battery box, and the through-type longitudinal beam, the multiple box cross beams, the multiple box longitudinal beams and the multiple support beams are connected to each other.

[0019] Preferably, the battery module applied to new energy commercial vehicles further comprises at least one extended battery box, the bottom of the extended battery box is provided with a plurality of extended battery connectors, and the top of the extended battery box is provided with a plurality of extended interfaces; The top of the battery box is configured with multiple expansion interfaces and / or multiple fixed interfaces, and the multiple expansion interfaces are respectively adapted to the multiple expansion battery connectors; The third side panel of the battery box is configured with a charging interface and / or a plurality of fixing interfaces.

[0020] Preferably, the first end and the second end are opened respectively, and the hollow through-type longitudinal beam can accommodate the connection pipeline to pass through.

[0021] On the other hand, the present specification provides a chassis structure applied to a new energy commercial vehicle, including a battery module applied to a new energy commercial vehicle provided by any one of the above aspects, as well as a front frame and a rear frame.

[0022] On the other hand, the present specification provides a new energy commercial vehicle, including a battery module for a new energy commercial vehicle provided by any one of the above aspects, or a chassis structure for a new energy commercial vehicle provided by any one of the above aspects.

[0023] At least one of the above technical solutions adopted in this specification can achieve the following beneficial effects: Based on the above content, the battery module applied to new energy commercial vehicles includes a battery box, a through-type longitudinal beam, a first battery unit and a second battery unit. Among them, the battery box contains a first power storage space, a second power storage space and a third space. The through-type longitudinal beam is arranged in the third space, and the first power storage space and the second power storage space are respectively arranged on the left and right sides of the through-type longitudinal beam. The through-type longitudinal beam is a hollow tubular structure, and the first end and the second end of the through-type longitudinal beam are respectively exposed to the outside through the battery box, and the first end and the second end are both open. The first battery unit is arranged in the first power storage space, and the second battery unit is arranged in the second power storage space.

[0024] From the above content, it can be seen that the battery module, through the design of the through-type longitudinal beam, greatly improves the strength of the battery box and improves the safety of the battery box while ensuring the energy density of the battery box. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of this specification and constitute a part of this specification. The illustrative embodiments and descriptions of this specification are used to explain this specification and do not constitute an improper limitation on this specification. In the drawings: Figure 1 This is a schematic diagram of the structure of a battery module used in a new energy commercial vehicle in this specification; Figure 2 A schematic diagram of the space distribution in a battery box provided for one embodiment of this specification; Figure 3 A partial structural schematic diagram of a battery box provided for one embodiment of this specification; Figure 4 A partial structural schematic diagram of a battery box provided for one embodiment of this specification; Figure 5 A partial structural schematic diagram of a battery module applied to a new energy commercial vehicle provided in one embodiment of this specification; Figure 6 A partial structural schematic diagram of a battery module applied to a new energy commercial vehicle provided in one embodiment of this specification; Figure 7 A partial structural schematic diagram of a battery module applied to a new energy commercial vehicle provided in one embodiment of this specification; Figure 8 A schematic diagram of the structure of a front suspension assembly provided for one embodiment of this specification; Fig. 9 A partial structural schematic diagram of a battery module applied to a new energy commercial vehicle provided in one embodiment of this specification; Fig.10 A partial structural schematic diagram of a battery module applied to a new energy commercial vehicle provided in one embodiment of this specification; Fig.11 A partial structural schematic diagram of a battery module applied to a new energy commercial vehicle provided in one embodiment of this specification; Fig.12 A partial structural schematic diagram of a battery module applied to a new energy commercial vehicle provided in one embodiment of this specification; Fig.13 A schematic diagram of a chassis structure applied to a new energy commercial vehicle provided in accordance with an embodiment of this specification; Fig.14 A schematic structural diagram of a chassis structure applied to a new energy commercial vehicle provided as an embodiment of the present specification.

[0026] Description of reference numerals: Battery box 1; through-type longitudinal beam 2; first battery unit 3; second battery unit 4; first power storage space 11; second power storage space 12; first end 21; second end 22; first side panel 13; front fixing member 51; rear fixing member 52; front suspension assembly 6; lifting member 61; fixed connection member 62; box cross beam 14; box longitudinal beam 15; support beam 16; fireproof material 71; fourth space 72; connecting valve 73; connecting pipeline 74; spray member 75; third space 76; extended battery box 81; front frame 91; rear frame 92. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of this specification more clear, the technical solutions of this specification will be clearly and completely described below in combination with the specific embodiments of this specification and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] In the description of the present invention, it should be noted that the term "or" is generally used in a meaning including "and / or", unless the content clearly indicates otherwise.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. In addition, in the description of the present application, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0030] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] The technical solutions provided by the embodiments of this specification are described in detail below in conjunction with the accompanying drawings.

[0032] Figure 1 This is a schematic diagram of the structure of a battery module used in new energy commercial vehicles in this specification, such as Figure 1 As shown, the battery module applied to the new energy commercial vehicle includes a battery box 1, a through-type longitudinal beam 2, a first battery unit 3 and a second battery unit 4.

[0033] Preferably, the battery box 1 contains a first power storage space 11 , a second power storage space 12 , a third space 76 and a fourth space 72 .

[0034] Preferably, the third space 76 is located at the top of the battery box 1 , the fourth space 72 is located below the third space 76 , and the first power storage space 11 and the second power storage space 12 are connected through the fourth space 72 .

[0035] Preferably, the large-sized blade battery can penetrate the first power storage space 11 , the fourth space 72 and the second power storage space 12 , and be placed horizontally inside the battery box 1 .

[0036] Preferably, the first electricity storage space 11 and the second electricity storage space 12 are respectively disposed on two sides of the third space 76 and the fourth space 72 .

[0037] Figure 2 A schematic diagram of the space distribution in the battery box 1 provided in one embodiment of this specification is shown in FIG. Figure 2 As shown, the third space 76 is located at the top of the battery box 1, and the fourth space 72 is located below the third space 76. The first power storage space 11 and the second power storage space 12 are connected through the fourth space 72, and the first power storage space 11 and the second power storage space 12 are respectively arranged on both sides of the third space 76 and the fourth space 72.

[0038] Preferably, the first power storage space 11 and the second power storage space 12 are used to directly place the battery cells, and the fourth space 72 is used to directly place the battery cells and / or spread the fireproof material 71.

[0039] Preferably, the battery cells are placed directly, that is, multiple battery cells are directly arranged and placed in the battery box 1 without using an additional modular battery box.

[0040] Preferably, the middle section of the through-type longitudinal beam 2 is disposed in the third space, that is, the middle section of the through-type longitudinal beam 2 is located inside the battery box 1 .

[0041] Figure 3 A partial structural diagram of a battery box 1 provided in an embodiment of this specification is shown in FIG. Figure 3 As shown, the first electricity storage space 11 and the second electricity storage space 12 are respectively disposed on two sides of the third space 76 and the fourth space 72 .

[0042] Preferably, the through-type longitudinal beam 2 is a hollow tubular structure.

[0043] Preferably, the first end 21 and the second end 22 of the through-type longitudinal beam 2 respectively pass through the battery box 1 to be exposed to the outside.

[0044] Preferably, the inner space of the through-type longitudinal beam 2 is communicated with the outside of the battery box 1 .

[0045] Preferably, the outer wall of the through-type longitudinal beam 2 and the inner wall of the battery box 1 enclose a closed space.

[0046] Figure 4 A partial structural diagram of a battery box 1 provided in an embodiment of this specification is shown in FIG. Figure 4 As shown, the first end 21 and the second end 22 of the through-type longitudinal beam 2 respectively pass through the battery box 1 and are exposed to the outside.

[0047] Preferably, both the first end 21 and the second end 22 are open.

[0048] Preferably, the first battery unit 3 is disposed in the first power storage space 11 , and the second battery unit 4 is disposed in the second power storage space 12 .

[0049] Based on the above embodiment, the battery module applied to the new energy commercial vehicle includes a battery box 1, a through-type longitudinal beam 2, a first battery unit 3 and a second battery unit 4. Among them, the battery box 1 contains a first power storage space 11, a second power storage space 12 and a third space. The through-type longitudinal beam 2 is arranged in the third space, and the first power storage space 11 and the second power storage space 12 are respectively arranged on the left and right sides of the through-type longitudinal beam 2. The through-type longitudinal beam 2 is a hollow tubular structure, and the first end 21 and the second end 22 of the through-type longitudinal beam 2 are respectively exposed to the outside through the battery box 1, and the first end 21 and the second end 22 are both open. The first battery unit 3 is arranged in the first power storage space 11, and the second battery unit 4 is arranged in the second power storage space 12.

[0050] It can be seen from the above equipment that the battery module, through the design of the through-type longitudinal beam 2, greatly improves the strength of the battery box 1 and improves the safety of the battery box 1 while ensuring the energy density of the battery box 1.

[0051] Preferably, the battery module applied to the new energy commercial vehicle further includes a front fixing member 51 and a rear fixing member 52. The front fixing member 51 is fixedly connected to the first end 21 of the through-type longitudinal beam 2 and to the outer surface of the battery box 1, and is used to be connected to the front frame 91 of the new energy commercial vehicle. The rear fixing member 52 is fixedly connected to the second end 22 of the through-type longitudinal beam 2 and to the outer surface of the battery box 1, and is used to be connected to the rear frame 92 of the new energy commercial vehicle.

[0052] According to the above content, the battery module is directly connected to the front frame 91 and the rear frame 92 of the new energy commercial vehicle through the front fixing member 51 and the rear fixing member 52. In other words, the new energy commercial vehicle equipped with the battery module is not equipped with a middle frame, and the battery module plays the role of the middle frame.

[0053] Preferably, the front fixing member 51 and the rear fixing member 52 are fixedly connected to the outer surface of the battery box 1 by welding.

[0054] It should be emphasized that the connection technology between mechanical structures has developed to a relatively mature level. When connecting any two components provided in this specification, they can be connected by various methods such as welding and / or riveting and / or bolting, and this specification does not impose any restrictions.

[0055] Preferably, the battery box 1 further includes a first side plate 13 and a second side plate which are arranged opposite to each other.

[0056] Preferably, the surfaces of the first side plate 13 and the second side plate are both provided with through holes, and the size of the through holes is adapted to the through-type longitudinal beam 2. Accordingly, the first end 21 and the second end 22 of the through-type longitudinal beam 2 respectively pass through the through holes and are exposed to the outside.

[0057] Preferably, the first side plate 13 is fixedly connected to the front fixing member 51 , and the second side plate is fixedly connected to the rear fixing member 52 .

[0058] Figure 5 A partial structural diagram of a battery module for a new energy commercial vehicle provided in one embodiment of this specification is shown in FIG. Figure 5 As shown, the first side plate 13 is fixedly connected to the front fixing member 51 .

[0059] Preferably, the battery module applied to the new energy commercial vehicle also includes a front suspension assembly 6 and a rear suspension assembly. The front suspension assembly 6 and the rear suspension assembly each include a lifting member 61 and a fixed connection member 62. The lifting member 61 can be closely attached to the bottom of the battery box 1, and the fixed connection member 62 of the front suspension assembly 6 can be fixedly connected to the front fixing member 51. The fixed connection member 62 of the rear suspension assembly can be fixedly connected to the rear fixing member 52.

[0060] Figure 6 as well as Figure 7 All of them are partial structural schematic diagrams of a battery module applied to a new energy commercial vehicle provided by an embodiment of this specification, such as Figure 6 as well as Figure 7 As shown, the fixed connection member 62 of the front suspension component 6 is fixedly connected to the front fixing member 51 , and the lifting member 61 of the front suspension component 6 is in close contact with the bottom of the battery box 1 .

[0061] Figure 8 A schematic diagram of the structure of the front suspension assembly 6 provided for one embodiment of the present specification is shown in FIG. Figure 8 As shown, the front suspension assembly 6 includes a lifting member 61 and a fixed connecting member 62 .

[0062] Preferably, the battery box 1 includes a plurality of box cross beams 14 , a plurality of box longitudinal beams 15 and a plurality of support beams 16 .

[0063] Preferably, the main body of the through-type longitudinal beam 2 is located inside the battery box 1 , and the through-type longitudinal beam 2 , the multiple box cross beams 14 , the multiple box longitudinal beams 15 and the multiple support beams 16 are connected to each other.

[0064] like Figure 6 As shown, the through-type longitudinal beam 2, the multiple box cross beams 14, the multiple box longitudinal beams 15 and the multiple support beams 16 are connected to each other.

[0065] Preferably, the battery module applied to new energy commercial vehicles also includes at least one extended battery box 81.

[0066] Preferably, the bottom of the extended battery box 81 is configured with a plurality of extended battery connectors, and the top of the extended battery box 81 is configured with a plurality of extended interfaces.

[0067] Preferably, the top of the battery box 1 is configured with multiple expansion interfaces and / or multiple fixed interfaces, and the multiple expansion interfaces are respectively adapted to the multiple expansion battery connectors.

[0068] Preferably, the fixed interface includes a liquid cooling interface and / or a high pressure interface and / or a low pressure interface.

[0069] Preferably, the extended battery box 81 can be configured on the top of the battery box 1 .

[0070] Fig. 9 A partial structural diagram of a battery module for a new energy commercial vehicle provided in one embodiment of this specification is shown in FIG. Fig. 9 As shown, the extended battery box 81 is configured on the top of the battery box 1.

[0071] Preferably, the third side panel of the battery box 1 is provided with a charging interface and / or a plurality of fixing interfaces, such as Figure 4 As shown, the top of the battery box 1 is configured with multiple fixing interfaces, and the third side panel of the battery box 1 is configured with a charging interface.

[0072] Preferably, the fixed interface configured on the third side panel of the battery box 1 is the same as the fixed interface configured on the top of the battery box 1, and both include a liquid circuit interface and / or a gas circuit interface and / or a circuit interface and / or a communication interface.

[0073] Preferably, the through-type longitudinal beam 2 with the first end 21 and the second end 22 opened and hollow respectively can accommodate the connection pipeline to pass through.

[0074] Preferably, the connecting pipeline is used to connect the front end and the rear end of the new energy commercial vehicle.

[0075] Preferably, the connecting pipeline includes a liquid pipeline and / or a signal pipeline and / or a gas pipeline, etc., which is not limited in this specification.

[0076] Preferably, the battery module used in new energy commercial vehicles also includes a fireproof component.

[0077] Preferably, there is a fourth space 72 in the battery box 1 , and the fourth space 72 is located below the through-type longitudinal beam 2 .

[0078] Preferably, a plurality of through holes are formed at the bottom of the through-type longitudinal beam 2 , and the fireproof component is disposed inside the through-type longitudinal beam 2 .

[0079] Preferably, the fireproof component can be activated, and the fireproof component in the activated state can release the fireproof substance 71 , and the fireproof substance 71 can pass through the multiple through holes and be released into the fourth space 72 .

[0080] Preferably, the fire protection assembly includes a connecting pipe 74, a spray pump, a plurality of spray parts 75, a temperature sensor and / or a smoke sensor. The position of the spray part 75 is adapted to the through hole at the bottom of the through-type longitudinal beam 2 and faces the fourth space 72. In addition, the connecting pipe 74 is connected to the plurality of spray parts 75 respectively, and the connecting pipe 74 is also connected to the cooling system of the new energy commercial vehicle, and the connecting pipe 74 is used to transmit the coolant.

[0081] Further preferably, the spray pump is disposed in the connecting pipe 74, and the spray pump is communicatively connected with the temperature sensor and / or the smoke sensor, and can receive an alarm signal sent by the temperature sensor and / or the smoke sensor, and is activated in response to the alarm signal, and delivers the coolant in the cooling system to the plurality of spray parts 75. It should be emphasized that when the spray pump is activated, the fire protection component is activated.

[0082] Further preferably, the coolant is a fluoride or a 50% ethylene glycol solution, etc., which is not limited in this specification.

[0083] Further preferably, the cooling system and / or the connecting pipeline 74 is also provided with an external interface, and the external interface can be opened to provide the fire extinguishing liquid to the spraying element 75 .

[0084] Further preferably, the fire protection component can also be configured in the fourth space.

[0085] Preferably, the fireproof component may also include a first container, a second container, a connecting valve 73, a temperature sensor and / or a smoke sensor. Wherein, the connecting valve 73 is arranged between the first container and the second container, and the connecting valve 73 can be opened and closed. The connecting valve 73 in a closed state is used to isolate the material transfer in the first container and the second container. The connecting valve 73 in an open state can allow material transfer between the first container and the second container. The first container stores a first fireproof component, and the second container stores a second fireproof component. After the first fireproof component and the second fireproof component are mixed, a large amount of fireproof material can be generated. The connecting valve 73 is also connected to the temperature sensor and / or the smoke sensor for communication, and can receive the alarm signal sent by the temperature sensor and / or the smoke sensor, and switch to the open state in response to the alarm signal. It should be emphasized that when the connecting valve 73 is opened, the fireproof component is activated.

[0086] Furthermore, the fire protection component includes a first container, a second container, a connecting valve 73, a temperature sensor and / or a smoke sensor, and when the fire protection component is configured in the through-type longitudinal beam 2, the battery module also includes a seal, which is respectively configured at the first end 21 and the second end 22 of the through-type longitudinal beam 2, and can seal the first end 21 and the second end 22 and allow the connecting pipeline to pass through.

[0087] Preferably, the battery box 1 is airtight. Specifically, except that the through-type longitudinal beam 2 is a structure with openings at both ends, air does not flow inside and outside the battery box 1 .

[0088] Further preferably, the battery box is equipped with an explosion-proof valve, and the explosion-proof valve can be opened after the air pressure inside the battery box rises to a preset air pressure threshold, allowing the air in the battery box to interact with the outside air, so that the spray part 75 can spray coolant.

[0089] Fig.10 , Fig.11 as well as Fig.12 All of them are partial structural schematic diagrams of a battery module applied to a new energy commercial vehicle provided by an embodiment of this specification, such as Fig.10 as well as Fig.11 As shown, after the connecting valve 73 is opened or the spray pump is turned on, the fireproof component arranged inside the through-type longitudinal beam 2 is activated, and the fireproof material 71 can be output by the connecting valve 73 or the spray component 75 connected to the connecting pipeline 74, and pass through the multiple through holes at the bottom of the through-type longitudinal beam 2 to be released into the fourth space 72. Fig.12 As shown, when the protection component disposed in the fourth space 72 is activated, the fire-retardant material 71 can be output by the connecting valve 73 and released into the fourth space 72 .

[0090] Preferably, the first battery unit 3 and the second battery unit 4 each include at least one sub-battery unit.

[0091] Preferably, the sub-battery unit comprises an integrated collection board, a liquid cooling plate, a nano-temperature plate and a plurality of battery cells. Furthermore, the integrated collection board, the liquid cooling plate, the nano-temperature plate and the plurality of battery cells are a multi-layer structure, and each layer is in contact with each other through a thermal conductive adhesive.

[0092] Further preferably, the plurality of sub-battery units are fixed left and right by front and rear integrated structural clamping plates.

[0093] Further preferably, the integrated collection plates and / or liquid cooling plates and / or nano-temperature averaging plates of different sub-battery units may be integrated.

[0094] Preferably, the battery box 1 also includes a hidden liquid cooling channel.

[0095] Preferably, the integrated sampling plate, liquid cooling interface, high-pressure interface and low-pressure interface are all arranged on the top of the battery box 1 to reduce pipelines.

[0096] Further preferably, the battery box 1 further comprises an integrated cover plate. The integrated cover plate comprises a composite material cover plate and an integrated panel. The integrated panel comprises a liquid cooling interface, a high voltage interface and a low voltage interface.

[0097] Further preferably, the composite material cover plate and the integrated panel form a sealing structure to seal the entire body of the battery box 1.

[0098] Preferably, the battery box 1 further comprises a plurality of non-standard long screws, which are used to fix the plurality of sub-battery units. Further preferably, the plurality of non-standard long screws are also used to protect the plurality of sub-battery units.

[0099] Preferably, the battery box 1 also includes components such as a sealing ring, an explosion-proof valve, and a maintenance switch. When the maintenance switch is turned on or off, the battery power supply can be disconnected. The sealing ring and the explosion-proof valve are used to maintain a sealed environment and maintain the air pressure in the battery box 1.

[0100] Preferably, the battery box 1 also includes a high-voltage connecting busbar and a low-voltage connecting line.

[0101] Preferably, the high-voltage connecting busbar is a copper busbar or an aluminum busbar.

[0102] Preferably, the battery box 1 uses an integrated collection board to collect the electric energy of multiple sub-battery units, and the high-voltage connection busbar and the low-voltage connection line are directly connected to the integrated collection board. It can be seen that the above method reduces the use of high and low voltage wiring harnesses, reduces costs, and improves safety.

[0103] According to the above content, it can be seen that the battery module provided in this specification for new energy commercial vehicles takes into account the role of the middle section frame, and can be directly connected to the front section frame 91 and the rear section frame 92 of the new energy commercial vehicle, which reduces the weight and improves the energy density of the battery box 1. And the battery box 1 has a high degree of integration, simplifies the structure, reduces the cost, and reduces the volume. Furthermore, compared with the traditional battery chassis architecture, the battery module provided in this specification adopts a highly integrated sub-battery unit, standardizes the functions such as liquid cooling, low-voltage collection, high-voltage connection, and structural fixation, and does not use structural adhesives and other difficult-to-disassemble connection materials, which can greatly reduce the cost of maintenance. In addition, the present invention sets the expansion interface and the fixed interface of the battery module at the top of the battery box 1, which simplifies the layout of the pipeline. In addition, during after-sales maintenance, it is only necessary to remove the integrated cover plate and then hoist the module to complete the maintenance and replacement, which solves the problem that the traditional solution is not easy to maintain.

[0104] The above is a battery module for a new energy commercial vehicle provided by one or more embodiments of this specification. Based on the same inventive concept, this specification also provides a chassis structure for a new energy commercial vehicle.

[0105] Preferably, the chassis structure applied to the new energy commercial vehicle includes the battery module applied to the new energy commercial vehicle provided by any one of the above embodiments, as well as the front frame 91 and the rear frame 92.

[0106] Fig.13 as well as Fig.14 All of them are structural schematic diagrams of a chassis structure applied to a new energy commercial vehicle provided by an embodiment of this specification, such as Fig.13 as well as Fig.14 As shown, the front frame 91 and the rear frame 92 are respectively fixedly connected to the battery module applied to the new energy commercial vehicle.

[0107] The above is a battery module for a new energy commercial vehicle and a chassis structure for a new energy commercial vehicle provided in one or more embodiments of this specification. Based on the same inventive concept, this specification also provides a new energy commercial vehicle.

[0108] Preferably, the new energy commercial vehicle includes a battery module for a new energy commercial vehicle provided by any one of the above embodiments, or a chassis structure for a new energy commercial vehicle provided by any one of the above embodiments.

[0109] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0110] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0111] The above description is only an embodiment of this specification and is not intended to limit this specification. For those skilled in the art, this specification may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this specification should be included in the scope of the claims of this application.

Claims

1. A battery module for new energy commercial vehicles, characterized in that: Including battery box and through-type longitudinal beam; The battery box contains a first power storage space, a second power storage space, a third space and a fourth space; The third space is located at the top of the battery box, and the fourth space is located below the third space; the first power storage space and the second power storage space are respectively arranged on both sides of the third space and the fourth space; the first power storage space and the second power storage space are connected through the fourth space; The through-type longitudinal beam is a hollow tubular structure, the middle section of the through-type longitudinal beam is arranged in the third space, the first end and the second end of the through-type longitudinal beam respectively pass through the battery box and are exposed to the outside, the internal space of the through-type longitudinal beam is connected to the outside of the battery box, and the outer wall of the through-type longitudinal beam and the inner wall of the battery box enclose a closed space; The first power storage space and the second power storage space are used for directly placing battery cells, and the fourth space is used for directly placing battery cells and / or transporting fireproof materials.

2. The battery module for new energy commercial vehicles according to claim 1, characterized in that: The battery module used in new energy commercial vehicles also includes a front fixing part and a rear fixing part; The front fixing member is fixedly connected to the first end of the through-type longitudinal beam and to the outer surface of the battery box, and is used to be connected to the front frame of the new energy commercial vehicle; The rear fixing member is fixedly connected to the second end of the through-type longitudinal beam and to the outer surface of the battery box, and is used to be connected to the rear frame of the new energy commercial vehicle.

3. The battery module for new energy commercial vehicles according to claim 2, characterized in that: The battery box also includes a first side plate and a second side plate that are arranged opposite to each other; The surfaces of the first side plate and the second side plate are both provided with through holes, and the sizes of the through holes are adapted to the through-type longitudinal beams; The first end and the second end of the through-type longitudinal beam respectively pass through the through hole and are exposed to the outside; The first side plate is fixedly connected to the front fixing member; The second side plate is fixedly connected to the rear fixing member.

4. The battery module for new energy commercial vehicles according to claim 2, characterized in that: The battery module used in new energy commercial vehicles also includes a front suspension component and a rear suspension component; The front suspension assembly and the rear suspension assembly both include a lifting member and a fixing connecting member; The lifting member can be tightly attached to the bottom of the battery box, the fixed connecting member of the front suspension component can be fixedly connected to the front fixing member; the fixed connecting member of the rear suspension component can be fixedly connected to the rear fixing member.

5. The battery module for new energy commercial vehicles according to claim 1, characterized in that: The battery module used in new energy commercial vehicles also includes a fireproof component; A plurality of through holes are provided at the bottom of the through-type longitudinal beam, and the fireproof component is arranged inside the through-type longitudinal beam; The fireproof component can be activated, and the fireproof component in the activated state can release the fireproof substance, and the fireproof substance can pass through the multiple through holes and be released into the fourth space.

6. The battery module for new energy commercial vehicles according to claim 5, characterized in that: The fire protection assembly includes a connecting pipeline, a sprinkler pump, a plurality of sprinkler parts, a temperature sensor and / or a smoke sensor; The positions of the plurality of spraying parts are adapted to the through holes provided at the bottom of the through-type longitudinal beam and face the fourth space; The connecting pipeline is connected to the plurality of spray elements respectively, and the connecting pipeline is also connected to the cooling system of the new energy commercial vehicle; The spray pump is arranged in the connecting pipeline, and the spray pump is communicatively connected with the temperature sensor and / or the smoke sensor, can receive the alarm signal sent by the temperature sensor and / or the smoke sensor, start in response to the alarm signal, and transport the coolant in the cooling system to the multiple spray parts.

7. The battery module for new energy commercial vehicles according to claim 6, characterized in that: The cooling system and / or the connecting pipeline is also provided with an external interface, and the external interface can be opened to provide fire extinguishing liquid to the multiple spray elements.

8. The battery module for new energy commercial vehicles according to claim 1, characterized in that: The battery module used in new energy commercial vehicles also includes a fireproof component; The fire protection assembly is arranged in the fourth space.

9. The battery module for new energy commercial vehicles according to claim 5 or 8, characterized in that: The fire protection assembly includes a first container, a second container, a connecting valve, a temperature sensor and / or a smoke sensor; The communication valve is disposed between the first container and the second container, and the communication valve can be opened and closed; the communication valve in a closed state is used to isolate the material transfer in the first container and the second container; the communication valve in an open state can allow the material transfer between the first container and the second container; The first container stores a first fire-proof component, the second container stores a second fire-proof component, and the first fire-proof component and the second fire-proof component can generate a large amount of fire-proof material after mixing; The connecting valve is also communicatively connected with the temperature sensor and / or the smoke sensor, and is capable of receiving an alarm signal sent by the temperature sensor and / or the smoke sensor, and switching to an open state in response to the alarm signal.

10. The battery module for new energy commercial vehicles according to any one of claims 1 to 8, characterized in that: The battery box includes a plurality of box cross beams, a plurality of box longitudinal beams and a plurality of support beams; The main body of the through-type longitudinal beam is located inside the battery box, and the through-type longitudinal beam, the multiple box cross beams, the multiple box longitudinal beams and the multiple support beams are connected to each other.

11. The battery module for new energy commercial vehicles according to any one of claims 1 to 8, characterized in that: The battery module applied to new energy commercial vehicles further includes at least one extended battery box, the bottom of the extended battery box is provided with a plurality of extended battery connectors, and the top of the extended battery box is provided with a plurality of extended interfaces; The top of the battery box is configured with multiple expansion interfaces and / or multiple fixed interfaces, and the multiple expansion interfaces are respectively adapted to the multiple expansion battery connectors; The third side panel of the battery box is configured with a charging interface and / or a plurality of fixing interfaces.

12. The battery module for new energy commercial vehicles according to any one of claims 1 to 8, characterized in that: The first end and the second end are respectively opened, and the hollow through-type longitudinal beam can accommodate the connection pipeline to pass through.

13. A chassis structure applied to a new energy commercial vehicle, characterized in that: It comprises a battery module for a new energy commercial vehicle as described in any one of claims 1 to 12, and a front frame and a rear frame.

14. A new energy commercial vehicle, characterized in that: It comprises the battery module applied to new energy commercial vehicles as described in any one of claims 1 to 12, or the chassis structure applied to new energy commercial vehicles as described in claim 13.

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