CTP battery pack and automobile

Abstract

The application discloses a CTP battery pack, which comprises a box body and a battery cell module, the battery cell module comprises a plurality of battery cells, a plurality of liquid cooling plates and a plastic support, the plurality of battery cells are arranged in rows and form a plurality of row battery cell groups, and a liquid cooling plate is arranged between two adjacent row battery cell groups; the plastic support is arranged at the bottom of the plurality of battery cells; the box body is internally provided with one or more first accommodating cavities for accommodating the battery cell module, a plurality of supporting plates are arranged in the first accommodating cavities, the plastic support abuts against the plurality of supporting plates and is supported by the plurality of supporting plates. Wherein, the first accommodating cavities are filled with foaming glue, the foaming glue adhesively connects the plurality of battery cells, the plurality of liquid cooling plates and the plastic support into an integrated whole, and the plastic support and the plurality of supporting plates are adhesively connected and fixed. Thus, the first accommodating cavities are filled with the foaming glue, so that all the components in the first accommodating cavities are adhesively connected into an integrated whole, thereby playing a role in strengthening the strength. In addition, the application further provides an automobile with the CTP battery pack.

Description

Technical Field

[0001] This invention relates to the field of battery pack technology, specifically to a CTP battery pack and an automobile. Background Technology

[0002] As the heart of new energy vehicles, the battery system plays a crucial role in safety and range performance. Traditional battery systems typically assemble cells into modules using external structural components, which are then integrated into the battery pack. This method is not only structurally complex but also cumbersome, time-consuming, and labor-intensive, resulting in relatively weak overall pack strength. Furthermore, battery modules are generally secured with bolts, which can easily lead to safety hazards if they loosen. Summary of the Invention

[0003] To overcome the defects described in the prior art, the present invention provides a CTP battery pack and an automobile, wherein the main components inside the battery pack are wrapped with foam adhesive to bond them into a whole, thereby improving the overall strength and simplifying assembly.

[0004] The technical solution adopted by this invention to solve its problem is:

[0005] A CTP battery pack, comprising:

[0006] A battery cell module includes several battery cells, several liquid cooling plates, and a plastic bracket. The several battery cells are arranged in rows to form several rows of battery cell groups, and a liquid cooling plate is provided between two adjacent rows of battery cell groups. The plastic bracket is disposed at the bottom of the several battery cells.

[0007] The housing has one or more first receiving cavities for accommodating the battery cell module. The first receiving cavity is provided with several support plates. The plastic bracket abuts against and is supported by the several support plates.

[0008] The first accommodating cavity is filled with expanding foam, which bonds several battery cells, several liquid cooling plates and plastic brackets into one unit, and bonds and fixes the plastic brackets to several support plates.

[0009] Furthermore, the plurality of support plates include at least a first support plate and a second support plate respectively disposed at both ends of the first accommodating cavity, the first support plate and the second support plate being used to support both ends of the plastic bracket and extending to the lower end of the liquid cooling plate respectively.

[0010] Furthermore, the battery cell module also includes a CCS assembly, which is disposed on top of several battery cells, and the foam adhesive bonds several battery cells and the CCS assembly together.

[0011] Furthermore, the wall of the liquid cooling plate is wavy, the battery cell is a cylindrical battery cell and is adapted to the wall of the liquid cooling plate, and the side of the battery cell close to the liquid cooling plate is in contact with the wall of the liquid cooling plate.

[0012] Furthermore, the box body is also provided with a plurality of pressure relief chambers corresponding to the number of the plurality of the first accommodating chambers, and the pressure relief chambers are located below the first accommodating chambers;

[0013] The plastic bracket has multiple pressure relief holes that connect to the pressure relief chamber. Several battery cells are arranged in one of the multiple pressure relief holes. The bottom of each battery cell is provided with a pressure relief valve, which is connected to the pressure relief chamber through the pressure relief hole.

[0014] Furthermore, the foam forms a porous structure inside after solidification.

[0015] Furthermore, the plastic bracket is rectangular and has two opposite long sides and two opposite short sides. One of the long sides is provided with a first inverted buckle structure in a wave shape, and the other long side is provided with a second inverted buckle structure in the same wave shape. The first inverted buckle structure and the second inverted buckle structure are fastened together to realize the splicing of multiple plastic brackets.

[0016] Furthermore, the first undercut structure includes a first groove formed on the upper end face of one of the long side and a first rib protruding from the first groove, both the first groove and the first rib being wavy; the second undercut structure includes a second groove formed on the lower end face of the other long side and a second rib protruding from the second groove, both the second groove and the second rib being wavy.

[0017] When the first undercut structure and the second undercut structure are fastened together, the first protruding rib is inserted into the second groove, and the second protruding rib is inserted into the first groove.

[0018] Furthermore, the housing also includes a bottom protective plate, and the lower end face of the plastic bracket is integrally injection molded with a flange nut for connecting the bottom protective plate, and a sealing ring is embedded in the bottom of the flange nut.

[0019] Furthermore, the flange nut is provided with a number of lugs at intervals along the circumferential direction, and the number of lugs forms the flange surface.

[0020] Furthermore, the lower end face of the plastic bracket is provided with a plurality of annular protrusions along its length and width directions, and adjacent annular protrusions arranged along the length direction of the plastic bracket are connected by a connecting block. The connecting block has a cavity, and foam is provided in the cavity.

[0021] Furthermore, the enclosure is provided with a second accommodating cavity for placing electrical components, and the second accommodating cavity is located on the side of the first accommodating cavity.

[0022] In addition, the present invention also provides an automobile including the above-described CTP battery pack.

[0023] In summary, the CTP battery pack and automobile provided by this invention have the following beneficial effects:

[0024] (1) In the CTP battery pack of the present invention, the first accommodating cavity inside the housing for placing the cell module is completely filled and soaked with foam. The foam can bond several cells, liquid cooling plate, CCS component and plastic bracket into a cell module, thereby improving the overall rigidity. At the same time, the foam can also bond and fix the plastic bracket to the support plate, thereby strengthening the structural strength. In addition, the housing is also provided with several pressure relief cavities, which are used to relieve pressure when the cell undergoes thermal runaway, thereby improving the safety of the battery pack.

[0025] (2) The CTP battery pack of the present invention has a first support plate and a second support plate respectively provided on both sides of the first accommodating cavity, and the first support plate and the second support plate respectively extend to the lower ends of the liquid cooling plate. Since a number of cells are bonded to the liquid cooling plate as a whole by foaming adhesive, extending the first support plate and the second support plate to the lower ends of the liquid cooling plate is beneficial to the transmission of force. Furthermore, the plastic bracket is bonded to the first support plate and the second support plate respectively by foaming adhesive, which is beneficial to improving the overall stability of the first support plate and the second support plate.

[0026] (3) In the CTP battery pack of the present invention, since the battery cell is a metal shell and it is not covered with an insulating film, it can play an insulating role by filling it with foam; in addition, after the foam solidifies, a porous structure will be formed inside. When the battery pack is impacted, the porous structure can deform and absorb energy, thereby playing a buffering role. At the same time, the air inside the porous structure can play a heat preservation role.

[0027] (4) The CTP battery pack of the present invention improves the stability of splicing by providing a first inverted structure and a second inverted structure on two opposite long sides of the plastic bracket, and by interlocking the two structures vertically. In addition, when the first inverted structure and the second inverted structure are interlocked vertically, the first protruding rib is inserted into the second groove and the second protruding rib is inserted into the first groove, thereby forming upper and lower steps, which prevents the foaming adhesive from flowing into the pressure relief space.

[0028] (5) The CTP battery pack of the present invention uses an integrally injection molded flange nut in the middle of the lower end face of the plastic bracket, so that it can be bolted to the bottom guard plate. Since the flange nut has a flange surface formed by several lugs, the injection bonding force can be guaranteed. When the plastic bracket is long, it can increase the support strength. In addition, a sealing ring is provided at the bottom of the flange nut to achieve a sealing effect.

[0029] (6) The CTP battery pack of the present invention improves the overall strength of the plastic bracket by providing several annular protrusions on the lower end face of the plastic bracket and connecting adjacent annular protrusions arranged along the length direction of the plastic bracket through connecting blocks; by placing foam in the connecting blocks, the foam can play a buffering and shock-absorbing role when the plastic bracket is connected to the bottom guard plate, reducing the friction between the plastic bracket and the bottom guard plate, thereby reducing the NVH (Noise, Vibration, Harshness) of the battery pack. Attached Figure Description

[0030] Figure 1 This is an exploded view of the CTP battery pack of the present invention;

[0031] Figure 2 This is an exploded view of a portion of the CTP battery pack structure of the present invention;

[0032] Figure 3 This is a schematic diagram of the CTP battery pack of the present invention;

[0033] Figure 4 This is a cross-sectional schematic diagram of the CTP battery pack of the present invention;

[0034] Figure 5 This is a cross-sectional schematic diagram of the foaming adhesive in the CTP battery pack of the present invention;

[0035] Figure 6 This is a schematic diagram of the structure of the CTP battery pack of the present invention after the top cover is hidden;

[0036] Figure 7 This is a schematic diagram of the plastic support structure in the CTP battery pack of the present invention;

[0037] Figure 8 for Figure 7 A structural diagram from another perspective;

[0038] Figure 9 This is a partial structural diagram of the CTP battery pack of the present invention when multiple plastic supports are spliced ​​together;

[0039] Figure 10 This is a schematic diagram of the flange nut in the CTP battery pack of the present invention.

[0040] The meanings of the reference numerals in the attached figures are as follows:

[0041] 1. Housing; 11. Frame; 111. First support plate; 112. Second support plate; 113. First partition bar; 114. Second partition bar; 12. Cover plate; 13. Bottom protective plate; 14. Maintenance cover; 15. First accommodating cavity; 16. Pressure relief cavity; 17. Second accommodating cavity; 2. Battery cell module; 21. Plastic bracket; 211. Pressure relief hole; 212. First inverted structure; 2121. First groove; 2122. First raised rib; 213. Second inverted structure; 2131. Second groove; 2132. Second raised rib; 214. Flange nut; 2141. Lug; 215. Sealing ring; 216. Annular raised edge; 217. Connecting block; 218. Foam; 219. Reinforcing rib; 22. Battery cell; 23. Liquid cooling plate; 24. CCS assembly; 3. Foam; 31. Porous structure; 4. Sealing strip. Detailed Implementation

[0042] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0043] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the module or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0045] See Figure 1-10This invention provides a CTP battery pack, including a housing 1 and a plurality of cell modules 2. The housing 1 has one or more first receiving cavities 15 for accommodating the cell modules 2. Specifically, the cell module 2 includes a plurality of cells 22, a plurality of liquid cooling plates 23, a plastic bracket 21, and a CCS assembly 24. The plurality of cells 22 are arranged in rows to form a plurality of cell groups, and a liquid cooling plate 23 is provided between two adjacent rows of cell groups. Preferably, the wall of the liquid cooling plate 23 is corrugated, and the battery cell 22 is a cylindrical battery cell whose sidewall is adapted to and fits the sidewall of the liquid cooling plate. The liquid cooling plate 23 has a flow channel inside, and one end of the liquid cooling plate 23 has an inlet and an outlet connected to the flow channel. When the coolant flows through the liquid cooling plate 23, the liquid cooling plate 23 can cool and dissipate heat for multiple battery cells 22 in the two rows of battery cell groups. The CCS assembly 24 is disposed on the top of several rows of battery cell groups. Preferably, the CCS assembly 24 adopts a coated form, which can reduce the overall height of the battery cell module 2. The plastic bracket 21 is disposed at the bottom of several rows of battery cell groups. Preferably, the plastic bracket 21 has positioning protrusions that correspond one-to-one with several battery cells 22, which can realize the pre-positioning of the battery cells 22, thereby realizing the rapid assembly of the battery cells 22. Several support plates are disposed in the first accommodating cavity 15, and the plastic bracket 21 abuts against and is supported by several support plates.

[0046] The first accommodating cavity 15 is filled with expanding foam 3, which bonds several battery cells 22, several liquid cooling plates 23, plastic brackets 21 and CCS components 24 to form a battery cell module 2, and bonds and fixes the plastic brackets 21 to several support plates.

[0047] Therefore, the first accommodating cavity 15 inside the housing 1, used to house the battery cell module 2, is completely filled and soaked with expanding foam 3. This expanding foam 3 can bond several battery cells 22, liquid cooling plate 23, CCS assembly 24, and plastic support 21 to form the battery cell module 2, thereby improving the overall rigidity. Simultaneously, the expanding foam 3 can also bond and fix the plastic support 21 to the support plate, thus strengthening the structure. Furthermore, since the battery cell 22 has a metal shell and no insulating film, filling it with expanding foam 3 provides insulation. Additionally, after the expanding foam 3 solidifies, a porous structure 31 is formed inside (e.g., Figure 5 As shown, when the battery pack is impacted, the porous structure 31 can deform to absorb energy, thereby playing a buffering role. At the same time, the air inside the porous structure 31 can play a heat preservation role.

[0048] Furthermore, the plurality of support plates include a first support plate 111 and a second support plate 112 respectively disposed at both ends of the first accommodating cavity 15. The first support plate 111 and the second support plate 112 are respectively used to support both ends of the plastic bracket 21 and extend to the lower end of the liquid cooling plate 23.

[0049] Therefore, by providing a first support plate 111 and a second support plate 112 on both sides of the first accommodating cavity 15, and extending the first support plate 111 and the second support plate 112 to the lower ends of the liquid cooling plate 23 respectively, since the several battery cells 22 are bonded to the liquid cooling plate 23 as a whole by foam adhesive, extending the first support plate 111 and the second support plate 112 to the lower ends of the liquid cooling plate 23 is beneficial for force transmission. Furthermore, by attaching the plastic bracket 21 to the first support plate 111 and the second support plate 112 respectively by foam adhesive 3, the overall stability of the first support plate 111 and the second support plate 112 is improved.

[0050] In addition, the housing 1 also has several pressure relief chambers 16 corresponding to the number of first accommodating chambers 15, located below the first accommodating chambers 15. The plastic support 21 has multiple pressure relief holes 211 communicating with the pressure relief chambers 16. Several battery cells 22 are correspondingly positioned in the multiple pressure relief holes 211. Each battery cell 22 has a pressure relief valve (not shown in the figure) at its bottom, which is connected to the pressure relief chamber 16 through the pressure relief hole 211. The diameter of the pressure relief hole 211 is larger than the diameter of the pressure relief valve, and the difference between the two is required for the placement of the battery cell 22. Therefore, when a battery cell 22 experiences thermal runaway, pressure can be smoothly released through the pressure relief hole 211, thereby improving battery safety.

[0051] In addition, the housing 1 is provided with a second accommodating cavity 17 for placing electrical components, which is located on the side of the first accommodating cavity 15.

[0052] In this embodiment, the electrical component includes a BMS module and a BDU module.

[0053] See Figure 1 and Figure 6 The enclosure 1 includes a rectangular frame 11 with openings at both the top and bottom. Inside the frame 11 are horizontally arranged first partition bars 113 and vertically arranged second partition bars 114, dividing the interior of the frame 11 into two first frames arranged vertically on one side and a second frame on the other side. Additionally, the enclosure 1 includes a cover plate 12 covering the two first frames, a maintenance cover 14 covering the second frame, and a bottom cover plate 13 covering the bottom of the two first frames and the second frame. The cover plate 12, the two first frames, the support plate, and the plastic bracket 21 enclose each other to form two first accommodating cavities 15, and two sets of battery cell modules 2 are respectively disposed within the two first accommodating cavities 15. The bottom cover plate 13, the two first frames, the support plate, and the plastic bracket 21 enclose each other to form two pressure relief cavities 16, which are located below the two first accommodating cavities 15. The maintenance cover 14, the second frame, and the bottom cover plate 13 enclose each other to form a second accommodating cavity 17.

[0054] In this embodiment, the connection between the frame 11 and the cover plate 12, the connection between the frame 11 and the maintenance cover 14, and the connection between the frame 11 and the bottom protective plate 13 are all provided with square-shaped sealing strips 4, thereby improving the overall sealing performance of the box 1 and ensuring the safety performance of the battery pack.

[0055] See also Figure 7-8 The plastic bracket 21 is rectangular and has two opposite long sides and two opposite short sides. A first inverted structure 212 with a wave shape is provided on one long side, and a second inverted structure 213 with the same wave shape is provided on the other long side. The first inverted structure 212 and the second inverted structure 213 are fastened together to realize the splicing of multiple plastic brackets 21. Specifically, the first inverted structure 212 includes a first groove 2121 formed on the upper end face of a long side and a first rib 2122 protruding from the first groove 2121, both the first rib 2122 and the first groove 2121 being wavy; the second inverted structure 213 includes a second groove 2131 formed on the lower end face of another long side and a second rib 2132 protruding from the second groove 2131, both the second groove 2131 and the second rib 2132 being wavy; when the first inverted structure 212 and the second inverted structure 213 are fastened together, the first rib 2122 is inserted into the second groove 2131 and the second rib 2132 is inserted into the first groove 2121.

[0056] Therefore, by interlocking the first inverted structure 212 and the second inverted structure 213, multiple plastic brackets 21 can be spliced ​​together, thus adapting to different usage scenarios. By setting the first inverted structure 212 and the second inverted structure 213 in a wave shape, their interlocking is more secure, thereby preventing the plastic brackets 21 from shifting relative to each other. In addition, when the first inverted structure 212 and the second inverted structure 213 are interlocked, the first protruding rib 2122 is inserted into the second groove 2131, and the second protruding rib 2132 is inserted into the first groove 2121, thereby forming upper and lower steps, which can prevent the foam from flowing into the pressure relief chamber 16.

[0057] Furthermore, a flange nut 214 for connecting the bottom guard plate 13 is integrally injection molded at the center of the lower end face of the plastic bracket 21, and a sealing ring 215 is embedded at the bottom of the flange nut 214. Preferably, the flange nut 214 is provided with a plurality of lugs 2141 at intervals along the circumferential direction, and the plurality of lugs 2141 can form a flange surface.

[0058] In addition, the lower end face of the plastic bracket 21 is provided with a number of annular protrusions 216 along its length and width directions. Adjacent annular protrusions 216 arranged along the length direction of the plastic bracket 21 are connected by a connecting block 217. The connecting block 217 has a cavity, and foam 218 is provided in the cavity.

[0059] Therefore, by integrally injection molding a flange nut 214 at the center of the lower end face of the plastic bracket 21, it can be bolted to the bottom cover plate 13. Since the flange nut 214 has several lugs 2141 forming a flange surface, the injection molding adhesion is guaranteed. When the plastic bracket 21 is long, it can increase the supporting strength. Furthermore, a sealing ring 215 is provided at the bottom of the flange nut 214 for sealing. By placing foam 218 inside the connecting block 217, when the plastic bracket 21 is connected to the bottom cover plate 13, the foam 218 can buffer and dampen shocks, reducing friction between the plastic bracket 21 and the bottom cover plate 13, thereby reducing the battery pack's NVH (Noise, Vibration, Harshness).

[0060] In this embodiment, the lower end face of the plastic bracket 21 is provided with a plurality of reinforcing ribs 219 along its width direction, and the plurality of reinforcing ribs 219 extend along the length direction of the plastic bracket 21. Of course, the reinforcing ribs 219 can also be provided on the upper end face of the plastic bracket 21 or on both the upper and lower end faces of the plastic bracket 21, and there are no restrictions on this.

[0061] In addition, the present invention also provides an automobile including the above-described CTP battery pack.

[0062] In summary, the CTP battery pack and automobile provided by this invention have the following beneficial effects:

[0063] (i) In the CTP battery pack of the present invention, the first accommodating cavity 15 inside the housing 1 for placing the cell module 2 is completely filled and soaked with foam 3. The foam 3 can bond several cells 22, liquid cooling plate 23, CCS component 24 and plastic bracket 21 to form the cell module 2, thereby improving the overall rigidity. At the same time, the foam 3 can also bond and fix the plastic bracket 21 to the support plate, thereby strengthening the structural strength. In addition, the housing 1 is also provided with several pressure relief cavities 16, which are used to relieve pressure when the cell 22 experiences thermal runaway, thereby improving the safety of the battery pack.

[0064] (II) The CTP battery pack of the present invention, by providing a first support plate 111 and a second support plate 112 on both sides of the first accommodating cavity 15, and the first support plate 111 and the second support plate 112 extending to the lower ends of the liquid cooling plate 23 respectively, since a plurality of battery cells 22 are bonded to the liquid cooling plate 23 as a whole by means of foaming adhesive 3, extending the first support plate 111 and the second support plate 112 to the lower ends of the liquid cooling plate 23 is beneficial to the transmission of force, and by means of foaming adhesive 3, the plastic bracket 21 is bonded to the first support plate 111 and the second support plate 112 respectively, which is beneficial to improving the overall stability of the first support plate 111 and the second support plate 112.

[0065] (III) In the CTP battery pack of the present invention, since the cell 22 is a metal shell and it is not covered with an insulating film, it can play an insulating role by filling it with foam 3; in addition, after the foam 3 solidifies, a porous structure 31 will be formed inside. When the battery pack is impacted, the porous structure 31 can deform and absorb energy, thereby playing a buffering role. At the same time, the air inside the porous structure 31 can play a heat preservation role.

[0066] (iv) The CTP battery pack of the present invention improves the stability of splicing by providing a first inverted structure 212 and a second inverted structure 213 on two opposite long sides of the plastic bracket 21, and by interlocking the two structures vertically. Furthermore, when the first inverted structure 212 and the second inverted structure 213 are interlocked vertically, the first protruding rib 2122 is inserted into the second groove 2131, and the second protruding rib 2132 is inserted into the first groove 2121, thus forming upper and lower steps, thereby preventing the foam adhesive 3 from flowing into the pressure relief space.

[0067] (v) The CTP battery pack of the present invention uses an integrally injection-molded flange nut 214 at the middle of the lower end face of the plastic bracket 21, which can be bolted to the bottom guard plate 13. Since the flange nut 214 has a flange surface formed by several lugs 2141, the injection bonding force can be guaranteed. When the plastic bracket 21 is long, it can increase the support strength. In addition, a sealing ring 215 is provided at the bottom of the flange nut 214 to achieve a sealing effect.

[0068] (vi) The CTP battery pack of the present invention improves the overall strength of the plastic bracket 21 by providing a plurality of annular protrusions 216 on the lower end face of the plastic bracket 21 and connecting adjacent annular protrusions 216 arranged along the length direction of the plastic bracket 21 through connecting blocks 217; by placing foam 218 in the connecting blocks 217, when the plastic bracket 21 is connected to the bottom protective plate 13, the foam 218 can play a buffering and shock-absorbing role, reducing the friction between the plastic bracket 21 and the bottom protective plate 13, thereby reducing the NVH (Noise, Vibration, Harshness) of the battery pack.

[0069] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0070] It should be understood that the terms "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the module or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0071] Furthermore, in the description of this invention, "a plurality of" or "several" means two or more, unless otherwise explicitly specified.

[0072] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications are also considered within the scope of protection of this invention.

Claims

1. A CTP battery pack characterized by, The utility model relates to a battery module and a box body for accommodating the battery module, and belongs to the field of battery module packaging. The battery module comprises a battery cell module (2), a box body (1) and a foaming glue (3). The battery cell module (2) comprises a plurality of battery cells (22), a plurality of liquid cooling plates (23) and a plastic support (21). The plurality of battery cells (22) are arranged in rows and form a plurality of rows of battery cell groups. The liquid cooling plate (23) is arranged between any two adjacent rows of battery cell groups.

2. The CTP battery pack of claim 1, wherein, The plastic support (21) is arranged at the bottom of the plurality of battery cells (22).

3. The CTP battery pack of claim 1, wherein, The plastic support (21) is provided with a positioning protrusion corresponding to each of the plurality of battery cells (22).

4. The CTP battery pack of claim 1, wherein, The box body (1) is internally provided with one or more first accommodating cavities (15) for accommodating the battery cell module (2).

5. The CTP battery pack of claim 1, wherein, The first accommodating cavity (15) is internally provided with a plurality of support plates. The plastic support (21) is in abutment with the plurality of support plates and is supported by the plurality of support plates.

6. The CTP battery pack of claim 1, wherein, The first accommodating cavity (15) is filled with the foaming glue (3). The foaming glue (3) bonds the plurality of battery cells (22), the plurality of liquid cooling plates (23) and the plastic support (21) into an integrated body, and bonds the plastic support (21) and the plurality of support plates. The plastic support (21) is rectangular and has two opposite long sides and two opposite short sides. The first long side is provided with a first reverse structure (212) in a wave shape. The second long side is provided with a second reverse structure (213) in a wave shape. The first reverse structure (212) and the second reverse structure (213) are in upper and lower abutment to realize the mutual splicing of a plurality of plastic supports (21). The plurality of support plates at least include a first support plate (111) and a second support plate (112) arranged at two ends of the first accommodating cavity (15), respectively. The first support plate (111) and the second support plate (112) are respectively used for supporting two ends of the plastic support (21) and respectively extend to below the end of the liquid cooling plate (23). The battery cell module (2) further comprises a CCS assembly (24) arranged at the top of the plurality of battery cells (22). The foaming glue (3) bonds the plurality of battery cells (22) and the CCS assembly (24) into an integrated body. The tube wall of the liquid cooling plate (23) is in a wave shape. The battery cell (22) is a cylindrical battery cell and is adapted to the tube wall of the liquid cooling plate (23). The battery cell (22) is in abutment with the tube wall of the liquid cooling plate (23) on the side close to the liquid cooling plate (23). The box body (1) is internally provided with a plurality of pressure relief cavities (16) corresponding to the number of the plurality of first accommodating cavities (15). The pressure relief cavities (16) are located below the first accommodating cavities (15). The plastic support (21) is provided with a plurality of pressure relief holes (211) in communication with the pressure relief cavities (16). The plurality of battery cells (22) are arranged in one-to-one correspondence with the plurality of pressure relief holes (211). The bottom of the battery cell (22) is provided with a pressure relief valve in communication with the pressure relief cavity (16) through the pressure relief hole (211). The foaming glue (3) forms a porous structure (31) after solidification.

7. The CTP battery pack of claim 1, wherein, The first reverse buckling structure (212) comprises a first groove (2121) opened on the end face of one long side and a first convex rib (2122) protruding on the first groove (2121), and the first groove (2121) and the first convex rib (2122) are both arranged in a wave shape; the second reverse buckling structure (213) comprises a second groove (2131) opened on the lower end face of the other long side and a second convex rib (2132) protruding on the second groove (2131), and the second groove (2131) and the second convex rib (2132) are both arranged in a wave shape; When the first reverse buckling structure (212) and the second reverse buckling structure (213) are buckled up and down, the first convex rib (2122) is inserted into the second groove (2131), and the second convex rib (2132) is inserted into the first groove (2121).

8. The CTP battery pack of claim 1, wherein, The box body (1) further comprises a bottom guard plate (13), and the lower end face of the plastic support (21) is integrally injection molded with a flange nut (214) for connecting the bottom guard plate (13), and the bottom of the flange nut (214) is inlaid with a sealing rubber ring (215).

9. The CTP battery pack of claim 8, wherein, The flange nut (214) is further provided with a plurality of lugs (2141) in the circumferential direction, and the plurality of lugs (2141) form a flange surface.

10. The CTP battery pack of claim 8, wherein, The lower end face of the plastic support (21) is provided with a plurality of annular convex edges (216) in the length and width directions, respectively, and adjacent two annular convex edges (216) arranged in the length direction of the plastic support (21) are connected by a connecting block (217), a recess is opened in the connecting block (217), and a foam (218) is arranged in the recess.

11. The CTP battery pack of claim 1, wherein, The box body (1) further comprises a second accommodating cavity (17) for placing electrical components, and the second accommodating cavity (17) is located on the side of the first accommodating cavity (15).

12. An automobile characterized by comprising: The CTP battery pack comprises the CTP battery pack as claimed in any one of claims 1-11. The CTP battery pack comprises the CTP battery pack as claimed in any one of claims 1-11.

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