Back CTP battery system for commercial vehicle

Abstract

The invention relates to the technical field of new energy battery packs, and particularly discloses a commercial vehicle back CTP battery system, a battery module is formed by arranging a plurality of battery units along a first direction, and each battery unit is formed by arranging a plurality of battery cell modules along the first direction; the battery cell module is formed by arranging a plurality of battery cell monomers along a second direction, the plurality of bearing units and the plurality of battery modules are arranged in a one-to-one correspondence manner, and the battery modules are supported on the bearing units. The multiple bearing units of the supporting frame serve as supporting carriers, each bearing unit independently carries a battery module, the integrated CTP battery pack structure is integrated, the integration efficiency is greatly improved, the commercial vehicle back battery pack structure is simplified, the space utilization rate of the whole vehicle is effectively improved, and the whole vehicle can meet the requirements for the overall arrangement space and the electricity consumption according to the overall requirements for arrangement space and electricity consumption. And meanwhile, the battery modules are independently assembled in different regions and do not interfere with one another, so that the follow-up maintenance is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy battery packs, and in particular to a rear CTP battery system for commercial vehicles. Background Art

[0002] Compared with traditional internal combustion engine vehicles, new energy electric vehicles have higher energy efficiency. They can not only significantly reduce air pollution caused by vehicle emissions, but also effectively save energy and reduce greenhouse gas emissions. As the heart of new energy vehicles, the battery system plays a vital role in safety and endurance performance. With the continuous development of new energy commercial vehicles, especially in the fields of tractors and dump trucks, considering the transportation costs, higher requirements are placed on the battery system's power and layout.

[0003] Existing commercial vehicle rear battery system designs usually adopt a standard battery pack box structure, in which multiple standard battery packs are combined up and down and assembled to the rear frame. Not only is the structure heavy, but the grouping efficiency is low. The overall structure is complex, which requires traditional components to provide avoidance space during layout, resulting in low space utilization of the entire vehicle.

[0004] Therefore, there is an urgent need for a rear CTP battery system for commercial vehicles to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a rear CTP battery system for commercial vehicles, simplify the rear battery pack structure of commercial vehicles, and effectively improve the space utilization of the entire vehicle.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] The present invention provides a back CTP battery system for commercial vehicles, comprising:

[0008] A battery pack, wherein the battery pack has a storage space;

[0009] A plurality of battery modules, wherein the battery modules are composed of a plurality of battery units arranged along a first direction, the battery units are composed of a plurality of battery cell modules arranged along the first direction, and the battery cell modules are composed of a plurality of battery cell monomers arranged along a second direction;

[0010] A support frame is placed in the accommodating space, and the support frame includes a plurality of bearing units arranged at intervals along the vertical direction, the plurality of bearing units are arranged in a one-to-one correspondence with the plurality of battery modules, and the battery modules are supported on the bearing units, and the first direction, the second direction and the vertical direction are perpendicular to each other.

[0011] As a preferred technical solution for the above-mentioned back CTP battery system for commercial vehicles, the load-bearing unit includes two cross beams and two longitudinal beams, the two cross beams are arranged opposite to each other and spaced apart along the second direction, the two longitudinal beams are arranged opposite to each other and spaced apart along the first direction, the two cross beams and the two longitudinal beams are connected in sequence to form a square frame, and the battery module is supported on the two cross beams.

[0012] As a preferred technical solution of the above-mentioned commercial vehicle back CTP battery system, the commercial vehicle back CTP battery system also includes a plurality of liquid cooling plates, which are arranged in sequence along the first direction, and each of the liquid cooling plates is supported and connected to the two beams, and the plurality of liquid cooling plates are arranged in a one-to-one correspondence with the plurality of battery cells, and the battery cells are supported and connected to the liquid cooling plates.

[0013] As a preferred technical solution of the above-mentioned rear CTP battery system for commercial vehicles, the liquid cooling plate is provided with a first flange and a second flange at both ends along its length direction, and the first flange and the second flange are overlapped on the two beams respectively.

[0014] As a preferred technical solution for the above-mentioned rear CTP battery system for commercial vehicles, a cooling channel is provided in the liquid cooling plate, and the cooling channel is used to circulate coolant. The outer edge of the first flange or the second flange is provided with a first protrusion and a second protrusion, the first protrusion is provided with a water outlet, and the second protrusion is provided with a water inlet, and the water outlet and the water inlet are both connected to the cooling channel.

[0015] As a preferred technical solution of the above-mentioned commercial vehicle back CTP battery system, the commercial vehicle back CTP battery system also includes a plurality of guide plates, which are arranged in a vertical direction on one side of the support frame, and the guide plates are arranged one-to-one with the battery modules. A cavity is opened on the side of the guide plate close to the battery module, and the cavity includes a water pipe area, a low-pressure area and a high-pressure area arranged at intervals along the first direction.

[0016] As a preferred technical solution of the above-mentioned commercial vehicle back CTP battery system, the commercial vehicle back CTP battery system also includes a plurality of brackets, the plurality of brackets correspond one-to-one to the plurality of guide plates, and the brackets are connected between the guide plates and the crossbeams.

[0017] As a preferred technical solution of the above-mentioned commercial vehicle back CTP battery system, the commercial vehicle includes a frame, and the commercial vehicle back CTP battery system also includes two connecting components, the two connecting components are arranged opposite to each other and spaced apart along the first direction, and the two connecting components are both connected between the bottom end of the support frame and the frame.

[0018] As a preferred technical solution of the above-mentioned commercial vehicle rear CTP battery system, the connecting assembly includes a connecting beam, a first connecting plate and a second connecting plate, the connecting beam is fixedly connected to the bottom end of the support frame, and the first connecting plate and the second connecting plate are both connected between the vehicle frame and the support frame.

[0019] As a preferred technical solution of the above-mentioned rear CTP battery system for commercial vehicles, the connecting assembly also includes a guide column and a positioning plate, the positioning plate is connected to the frame, and the positioning plate is located between the first connecting plate and the second connecting plate, the guide column is fixedly connected to the connecting beam, and the positioning plate is recessed with a positioning groove, and the guide column can be inserted into the positioning groove.

[0020] The beneficial effects of the present invention are:

[0021] The present invention provides a rear CTP battery system for commercial vehicles, which comprises: a battery pack, a plurality of battery modules, and a support frame. The battery pack is provided with an accommodation space. The battery module is composed of a plurality of battery units arranged along a first direction. The battery unit is composed of a plurality of battery core modules arranged along the first direction. The battery core module is composed of a plurality of battery core monomers arranged along a second direction. The support frame is placed in the accommodation space, and the support frame comprises a plurality of bearing units arranged at intervals along a vertical direction. The plurality of bearing units are arranged in a one-to-one correspondence with the plurality of battery modules, and the battery modules are supported on the bearing units. The first direction, the second direction and the vertical direction are perpendicular to each other. In this way, the several bearing units of the supporting frame are used as supporting carriers, each bearing unit independently carries a battery module, and integrates an integrated CTP battery pack structure, which is different from the existing combination assembly of multiple standard battery pack boxes. It greatly improves the integration efficiency, simplifies the rear battery pack structure of commercial vehicles, and effectively improves the space utilization of the whole vehicle. The whole vehicle can form battery units of different sizes by arbitrarily matching different numbers of battery cells and battery modules according to the comprehensive needs of layout space and power consumption, and then forming battery modules of different powers by matching different numbers of battery cells. At the same time, each battery module is independently partitioned and assembled, and works independently of each other, which is convenient for subsequent repair and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the assembly of the rear CTP battery system and the frame for commercial vehicles provided by the present invention Figure 1 ;

[0023] Figure 2 Schematic diagram of the assembly of the rear CTP battery system and the frame for commercial vehicles provided by the present invention Figure 2 ;

[0024] Figure 3 A schematic diagram of the structure of the support frame provided by the present invention;

[0025] Figure 4 A schematic diagram of a portion of the structure of the support frame provided by the present invention;

[0026] Figure 5 A schematic diagram of the structure of the liquid cooling plate provided by the present invention;

[0027] Figure 6 A schematic diagram of the structure of a battery unit provided by the present invention;

[0028] Figure 7 A schematic diagram of the structure of the guide plate provided by the present invention;

[0029] Figure 8 This is a schematic structural diagram of the rear CTP battery system for commercial vehicles provided by the present invention.

[0030] in:

[0031] 100. battery module; 200. support frame;

[0032] 1. Battery pack; 2. Battery cell module; 3. Crossbeam; 4. Longitudinal beam; 5. Vertical beam; 6. Liquid cooling plate; 7. First flange; 8. Second flange; 9. Cooling channel; 10. Water outlet; 11. Water inlet; 12. Guide plate; 13. Water pipe area; 14. Low-pressure area; 15. High-pressure area; 16. Bracket; 17. Frame; 18. Connecting beam; 19. First connecting plate; 20. Second connecting plate; 21. Positioning plate; 22. BMS slave plate. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0034] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0035] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0038] like Figures 1 to 8As shown, this embodiment provides a rear CTP battery system for commercial vehicles, which includes: a battery pack 1, a plurality of battery modules 100, and a support frame 200. The battery pack 1 is provided with a storage space. The battery module 100 is composed of a plurality of battery units arranged along a first direction. The battery unit is composed of a plurality of battery modules 2 arranged along a first direction. The battery module 2 is composed of a plurality of battery cells arranged along a second direction. The support frame 200 is placed in the storage space, and the support frame 200 includes a plurality of bearing units arranged at intervals along the vertical direction. The plurality of bearing units are arranged one-to-one with the plurality of battery modules 100, and the battery modules 100 are supported on the bearing units. The first direction, the second direction and the vertical direction are perpendicular to each other. In this way, the several bearing units of the support frame 200 are used as supporting carriers, each bearing unit independently carries a battery module 100, and integrates an integrated CTP battery pack 1 structure, which is different from the existing multiple standard battery pack 1 box combination assembly, which greatly improves the integration efficiency, simplifies the structure of the rear battery pack 1 of the commercial vehicle, and effectively improves the space utilization rate of the whole vehicle. The whole vehicle can form battery units of different sizes by arbitrarily matching different numbers of battery cells and battery modules 2 according to the comprehensive needs of layout space and power consumption, and then forming battery modules 100 of different powers by matching different numbers of battery cells. At the same time, each battery module 100 is independently partitioned and assembled, and works independently of each other, which is convenient for subsequent repair and maintenance.

[0039] It should be noted that CTP stands for Cell To Pack, which indicates the technology of module-free power battery pack 1 . The first direction is the length direction of the crossbeam 3 , and the second direction is the length direction of the longitudinal beam 4 .

[0040] In this embodiment, in order to ensure the support strength of the battery module 100 and further simplify the structure to achieve lightweight, the bearing unit includes two cross beams 3 and two longitudinal beams 4, the two cross beams 3 are arranged oppositely and spaced along the second direction, the two longitudinal beams 4 are arranged oppositely and spaced along the first direction, the two cross beams 3 and the two longitudinal beams 4 are connected in sequence to form a square frame, the battery module 100 is supported on the two cross beams 3, and the two cross beams 3 are also used to install the outer skin structure of the battery module 100. Further, the back CTP battery system for commercial vehicles also includes four vertical beams 5, and the four vertical beams 5 are fixedly connected to the four corners of each square frame in a one-to-one correspondence.

[0041] Optionally, in order to ensure that the battery cells of the commercial vehicle back CTP battery system are always at a suitable working temperature during operation, the commercial vehicle back CTP battery system further includes a plurality of liquid cooling plates 6, which are arranged in sequence along the first direction, and each of the liquid cooling plates 6 is supported and connected to the two beams 3, and the plurality of liquid cooling plates 6 are arranged in a one-to-one correspondence with the plurality of battery cells, and the battery cells are supported and connected to the liquid cooling plates 6. Furthermore, the upper surface of the liquid cooling plate 6 is coated with a 0.8 mm thermal conductive structural adhesive, which can ensure the heat transfer efficiency of the liquid cooling plate 6 and play a certain fixing role on the battery cells.

[0042] Optionally, in order to facilitate the positioning and assembly of the liquid cooling plate 6, the liquid cooling plate 6 is provided with a first flange 7 and a second flange 8 at both ends along its length direction, and the first flange 7 and the second flange 8 are overlapped on the two beams 3 respectively.

[0043] Furthermore, in order to enhance the connection reliability between the liquid cooling plate 6 and the load-bearing unit, the commercial vehicle back CTP battery system further includes a plurality of first connectors and a plurality of second connectors, wherein the plurality of first connectors are all provided with a first flange 7 and connected to one of the cross beams 3, and the plurality of second connectors are all provided with a second flange 8 and connected to another cross beam 3. Specifically, the first connector and the second connector are both bolts.

[0044] Optionally, in order to ensure the circulation of the cooling channel 9 and timely update and replenish the coolant, a cooling channel 9 is provided in the liquid cooling plate 6. The cooling channel 9 is serpentine and is used to circulate the coolant. The outer edge of the first flange 7 or the second flange 8 is provided with a first protrusion and a second protrusion. The first protrusion is provided with a water outlet 10, and the second protrusion is provided with a water inlet 11. The water outlet 10 and the water inlet 11 are both connected to the cooling channel 9.

[0045] Optionally, the back CTP battery system for commercial vehicles also includes a plurality of guide plates 12, which are arranged in a vertical direction on one side of the support frame 200, and the plurality of guide plates 12 are arranged one by one with the plurality of battery modules 100. The outermost layer of the guide plate 12 is formed by bending an aluminum profile, and a cavity is provided on the side of the guide plate 12 close to the battery module 100. The cavity includes a water pipe area 13, a low-pressure area 14, and a high-pressure area 15 arranged at intervals along the first direction. The three areas are separated by a partition plate, which is made of polyethylene material, and the battery control management system BMS slave plate 22 is connected to the outer surface of the guide plate 12. In this way, the water pipe area 13, the low-pressure area 14, and the high-pressure area 15 are independently routed, which reduces both weight and EMC interference.

[0046] Optionally, the rear CTP battery system for commercial vehicles further includes a plurality of brackets 16, the plurality of brackets 16 correspond to the plurality of guide plates 12 one by one, and the brackets 16 are connected between the guide plates 12 and the crossbeam 3. Specifically, the brackets 16 are C-shaped.

[0047] Specifically, the following scheme is exemplarily given in this embodiment: the commercial vehicle includes a frame 17, and the back CTP battery system for the commercial vehicle also includes two connecting components, the two connecting components are arranged opposite to each other and spaced apart along a first direction, and the two connecting components are both connected between the bottom end of the support frame 200 and the frame 17, the connecting components include a connecting beam 18, a first connecting plate 19 and a second connecting plate 20, the connecting beam 18 is fixedly connected to the bottom end of the support frame 200, and the first connecting plate 19 and the second connecting plate 20 are both connected between the frame 17 and the support frame 200.

[0048] Furthermore, in order to facilitate the installation and positioning of the support frame 200, the connection assembly further includes a guide post and a positioning plate 21, the positioning plate 21 is connected to the vehicle frame 17, and the positioning plate 21 is located between the first connecting plate 19 and the second connecting plate 20, the guide post is fixedly connected to the connecting beam 18, and the positioning plate 21 is concavely provided with a positioning groove, and the guide post can be inserted into the positioning groove. In this way, during actual assembly, the guide post can be inserted into the positioning groove to achieve pre-positioning, so as to facilitate the subsequent installation of other components of the connection assembly.

[0049] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A back CTP battery system for commercial vehicles, characterized in that: include: A battery pack (1), wherein the battery pack (1) has a storage space therein; A plurality of battery modules (100), wherein the battery modules (100) are composed of a plurality of battery units arranged along a first direction, wherein the battery units are composed of a plurality of battery cell modules (2) arranged along the first direction, and wherein the battery cell modules (2) are composed of a plurality of battery cell units arranged along a second direction; A support frame (200), the support frame (200) being placed in the accommodating space, and the support frame (200) comprising a plurality of bearing units arranged at intervals along a vertical direction, the plurality of bearing units being arranged in a one-to-one correspondence with the plurality of battery modules (100), and the battery modules (100) being supported on the bearing units, and the first direction, the second direction and the vertical direction being perpendicular to each other.

2. The back CTP battery system for commercial vehicles according to claim 1, characterized in that: The bearing unit comprises two cross beams (3) and two longitudinal beams (4); the two cross beams (3) are arranged opposite to each other and spaced apart along the second direction; the two longitudinal beams (4) are arranged opposite to each other and spaced apart along the first direction; the two cross beams (3) and the two longitudinal beams (4) are connected in sequence to form a square frame; and the battery module (100) is supported on the two cross beams (3).

3. The back CTP battery system for commercial vehicles according to claim 2, characterized in that: The commercial vehicle rear CTP battery system further comprises a plurality of liquid cooling plates (6), the plurality of liquid cooling plates (6) being arranged in sequence along the first direction, and each of the liquid cooling plates (6) being supported and connected to the two cross beams (3), the plurality of liquid cooling plates (6) being arranged in one-to-one correspondence with the plurality of battery units, and the battery units being supported and connected to the liquid cooling plates (6).

4. The back CTP battery system for commercial vehicles according to claim 3, characterized in that: The liquid cooling plate (6) is provided with a first flange (7) and a second flange (8) at both ends along its length direction, and the first flange (7) and the second flange (8) are overlapped on the two cross beams (3) respectively.

5. The back CTP battery system for commercial vehicles according to claim 4, characterized in that: The liquid cooling plate (6) is provided with a cooling channel (9) for circulating cooling liquid. The outer edge of the first flange (7) or the second flange (8) is provided with a first protrusion and a second protrusion. The first protrusion is provided with a water outlet (10), and the second protrusion is provided with a water inlet (11). The water outlet (10) and the water inlet (11) are both connected to the cooling channel (9).

6. The back CTP battery system for commercial vehicles according to claim 2, characterized in that: The commercial vehicle rear CTP battery system further comprises a plurality of guide plates (12), the plurality of guide plates (12) being arranged in a vertical direction on one side of the support frame (200), and the plurality of guide plates (12) being arranged in a one-to-one correspondence with the plurality of battery modules (100), the guide plates (12) being provided with a cavity on a side close to the battery module (100), the cavity comprising a water pipe area (13), a low pressure area (14) and a high pressure area (15) arranged at intervals along the first direction.

7. The back CTP battery system for commercial vehicles according to claim 6, characterized in that: The commercial vehicle rear CTP battery system further comprises a plurality of brackets (16), the plurality of brackets (16) corresponding one to one with the plurality of guide plates (12), and the brackets (16) are connected between the guide plates (12) and the crossbeam (3).

8. The back CTP battery system for commercial vehicles according to any one of claims 1 to 7, characterized in that: The commercial vehicle comprises a frame (17), and the commercial vehicle rear CTP battery system further comprises two connection assemblies, the two connection assemblies are arranged opposite to each other and at intervals along the first direction, and the two connection assemblies are both connected between the bottom end of the support frame (200) and the frame (17).

9. The back CTP battery system for commercial vehicles according to claim 8, characterized in that: The connecting assembly comprises a connecting beam (18), a first connecting plate (19) and a second connecting plate (20); the connecting beam (18) is fixedly connected to the bottom end of the supporting frame (200); and the first connecting plate (19) and the second connecting plate (20) are both connected between the vehicle frame (17) and the supporting frame (200).

10. The back CTP battery system for commercial vehicles according to claim 9, characterized in that: The connecting assembly further comprises a guide column and a positioning plate (21), wherein the positioning plate (21) is connected to the vehicle frame (17), and the positioning plate (21) is located between the first connecting plate (19) and the second connecting plate (20), the guide column is fixedly connected to the connecting beam (18), and the positioning plate (21) is recessed with a positioning groove, and the guide column can be plugged into the positioning groove.

Images