CTP battery pack and electronic equipment

Abstract

The utility model provides a CTP battery pack and electronic equipment. The CTP battery pack comprises a box body, the box body comprises a box cover and a bottom protection plate, and a containing cavity is defined by the box cover and the bottom protection plate; the liquid cooling plate is arranged on the bottom protection plate and located in the containing cavity, and the liquid cooling plate is provided with a liquid cooling flow channel for cooling liquid to flow; the battery is attached to the liquid cooling plate, and the liquid cooling plate is used for conducting heat exchange on the battery; the lifting point assembly is located in the middle area of the box body in the first direction, the lifting point assembly comprises at least two lifting point pieces, the at least two lifting point pieces are connected with each other, one of the at least two lifting point pieces is connected with the box cover in a sealed mode, and the other of the at least two lifting point pieces is connected with the bottom protection plate in a sealed mode; wherein the first direction is the length direction of the box body. According to the CTP battery pack, the structural stability of the whole CTP battery pack is improved, the heat exchange effect is good, and the cost is low.

Description

Technical Field

[0001] This application relates to a CTP battery pack and electronic device, belonging to the field of new energy battery technology. Background Technology

[0002] In recent years, with the increasing maturity of power battery technology, the selection of power batteries for different vehicle models has become more diversified due to factors such as vehicle application, market demand, and policies and regulations. Especially in the passenger vehicle sector, achieving cost targets while also considering energy density requirements makes the strength of the battery casing structure, its modal characteristics, sealing performance, and system thermal management design particularly important.

[0003] In conceiving and implementing this application, the applicant discovered at least the following problems: the batteries in the battery pack are connected to the crossbeams in the housing via mounting end plates, which is costly and the entire battery pack is bulky.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Utility Model Content

[0005] This application provides a CTP battery pack and electronic device, which improves the structural stability of the entire CTP battery pack, and has good heat exchange effect, low cost, and small size.

[0006] This application provides a CTP battery pack, including:

[0007] The box body includes a lid and a bottom panel, which together form a receiving cavity.

[0008] A liquid cooling plate is mounted on the bottom protective plate and located within the receiving cavity. The liquid cooling plate has liquid cooling channels for the flow of coolant.

[0009] The battery is attached to a liquid cooling plate, which is used for heat exchange of the battery.

[0010] The lifting point assembly is located in the middle region of the housing along a first direction. The lifting point assembly includes at least two lifting points that are interconnected. One of the at least two lifting points is sealed to the housing cover, and the other of the at least two lifting points is sealed to the bottom guard plate.

[0011] The first direction is the length direction of the box.

[0012] The beneficial effects of this application are: by setting the suspension point components, the strength of the CTP battery pack is met, the overall structural mode is improved, the cost reduction requirements of the battery end cap-less design are met, the seal between the battery and the housing is ensured, and the overall battery pack volume is reduced; in addition, the liquid cooling plate exchanges heat with the battery, which can effectively manage the battery temperature and provide good thermal management performance for the entire CTP battery pack system, which helps to improve the performance and life of the CTP battery pack.

[0013] Based on the above technical solution, the following improvements can be made to this application.

[0014] In some alternative implementations, at least two lifting points include a first lifting point, a second lifting point, a third lifting point, and a fourth lifting point.

[0015] The first and second lifting points are located inside the housing, while the third and fourth lifting points are located outside the housing.

[0016] The first lifting point and the first ends of the second lifting point are sealed together. The third lifting point abuts against the box cover and is connected to the first lifting point.

[0017] The second end of the second lifting point component is sealed to the liquid cooling plate, and the fourth lifting point component abuts against the bottom protective plate and is connected to the second end of the second lifting point component.

[0018] It should be noted that by incorporating multiple lifting points, the modal performance of the overall structure can be improved. In particular, placing the first and second lifting points inside the housing, and the third and fourth lifting points outside, effectively enhances the overall structural strength of the CTP (Cell to Pack) battery pack. This design helps to distribute the load, reduce stress concentration, and thus improve the durability and reliability of the battery pack.

[0019] In some optional embodiments, the lifting point assembly further includes a first lifting point sealing ring, a second lifting point sealing ring, a third lifting point sealing ring, and a fourth lifting point sealing ring;

[0020] The first lifting point component and the second lifting point component are connected by a sealing ring at the first lifting point.

[0021] The second lifting point sealing ring is located between the first lifting point component and the box cover to ensure a seal between the first lifting point component and the box cover;

[0022] The second end of the second lifting point component is sealed to the liquid cooling plate through the third lifting point sealing ring;

[0023] The fourth lifting point sealing ring is located between the second end of the second lifting point component and the bottom protective plate to seal the fourth lifting point component and the bottom protective plate.

[0024] It should be noted that by setting first, second, third, and fourth lifting point sealing rings at various key connection points, the sealing between each component is ensured. This design effectively prevents liquids, dust, and other contaminants from entering the battery pack, protecting the safety and performance of the battery cells and extending the service life of the battery pack and its related components.

[0025] In some alternative embodiments, at least one of the first and second lifting points is a hollow structure, and at least one of the third and fourth lifting points is a locking nut.

[0026] It should be noted that designing the first and / or second lifting points as hollow structures can effectively reduce the weight of the components. This is highly beneficial for the overall lightweight design of the battery pack, contributing to improved vehicle energy efficiency and range. Designing the third and / or fourth lifting points as locking nuts enhances connection stability and reliability. Locking nuts provide better vibration and loosening resistance, ensuring connection stability under dynamic loads.

[0027] In some alternative embodiments, the housing also includes a frame member disposed on the bottom protective plate and surrounding the periphery of the battery.

[0028] It should be noted that the frame components provide additional structural support, enhancing the overall rigidity and strength of the battery pack. By surrounding the outer perimeter of the battery, the frame components effectively distribute and withstand mechanical loads from the outside, protecting the battery from damage caused by impacts and vibrations.

[0029] In some alternative embodiments, the box body further includes a plurality of limiting beams, which are spaced apart on the frame members along a first direction;

[0030] The battery is located between two adjacent limiting beams.

[0031] It should be noted that the limiting beams provide clear positioning and fixation for the battery, simplifying the battery assembly process and reducing assembly time and error rate. By placing the battery between adjacent limiting beams, displacement of the battery during transportation or use can be effectively prevented, ensuring its stability within the enclosure.

[0032] In some alternative embodiments, the CTP battery pack also includes a structural sealant, with a liquid cooling plate disposed on the frame member via the structural sealant, and the liquid cooling plate being located between the frame member and the bottom protective plate.

[0033] In some alternative implementations, the CTP battery pack also includes a lifting lug and a reinforcing plate, the lifting lug being disposed on the reinforcing plate and the reinforcing plate being disposed on the side wall of the frame member.

[0034] It should be noted that the lifting lugs facilitate the lifting and transportation of the battery pack. By installing lifting lugs on the reinforcing plate, it is ensured that the force is evenly distributed during lifting, reducing potential damage to the battery pack. The combined design of the reinforcing plate and lifting lugs improves the safety of the battery pack during transportation and installation. The reinforcing plate provides additional support to prevent side wall deformation or damage that may occur during lifting.

[0035] In some alternative implementations, any of the following are included:

[0036] The liquid cooling plate is an aluminum stamped liquid cooling plate;

[0037] The bottom guard plate is a hot-formed steel plate part;

[0038] The bottom of the base plate has an armor layer;

[0039] The CTP battery pack also includes support foam, which is positioned between the liquid cooling plate and the bottom protective plate to support the liquid cooling plate.

[0040] In addition, this application also provides an electronic device including the aforementioned CTP battery pack.

[0041] The CTP battery pack and electronic device provided in this application include a CTP battery pack; the CTP battery pack includes a housing, including a housing cover and a bottom protective plate, the housing cover and the bottom protective plate forming a receiving cavity; a liquid cooling plate disposed on the bottom protective plate and located within the receiving cavity, the liquid cooling plate having liquid cooling channels for coolant flow; a battery attached to the liquid cooling plate, the liquid cooling plate being used for heat exchange of the battery; and a lifting point assembly located in the middle region of the housing along a first direction, the lifting point assembly including at least two lifting points, the at least two lifting points being interconnected, one of the at least two lifting points being sealed to the housing cover, and the other of the at least two lifting points being sealed to the bottom protective plate; wherein, the first direction is the length direction of the housing.

[0042] By setting up the suspension point assembly, the strength of the CTP battery pack is guaranteed, the overall structural mode is improved, the cost reduction requirement of the battery end cap-less design is met, and the seal between the battery pack and the housing is ensured. In addition, the liquid cooling plate exchanges heat with the battery, which can effectively manage the battery temperature and provide good thermal management performance for the entire CTP battery pack system, which helps to improve the performance and life of the CTP battery pack. Attached Figure Description

[0043] The above and other objects, features, and advantages of embodiments of this application will become more readily understood through the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this application will be described by way of example and non-limitation, wherein:

[0044] Figure 1 This is a schematic diagram of the CTP battery pack according to an embodiment of this application;

[0045] Figure 2 This is an exploded view of a CTP battery pack according to an embodiment of this application;

[0046] Figure 3 This is a partial structural diagram of a CTP battery pack according to an embodiment of this application;

[0047] Figure 4 This is an assembly cross-sectional view of the lifting point assembly and the housing of the CTP battery pack according to an embodiment of this application;

[0048] Figure 5 This is an assembly cross-sectional view of the liquid cooling plate and bottom protective plate of the CTP battery pack according to an embodiment of this application.

[0049] Figure label:

[0050] 100-CTP battery pack;

[0051] 110 - Box body; 111 - Box cover; 112 - Bottom guard plate; 113 - Frame components; 114 - Limiting beam;

[0052] 120-Liquid Cooling Plate;

[0053] 130 - Structural sealant;

[0054] 140 - Lifting point assembly; 141 - First lifting point component; 142 - Second lifting point component; 143 - Third lifting point component; 144 - Fourth lifting point component; 145 - First lifting point sealing ring; 146 - Second lifting point sealing ring; 147 - Third lifting point sealing ring; 148 - Fourth lifting point sealing ring;

[0055] 150 - Lifting lug; 160 - Reinforcing plate; 170 - Supporting foam; 180 - First seal; 190 - Second seal; 101 - Inlet / outlet nozzle reinforcing bracket. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. All other obtained embodiments are within the scope of protection of this application. In the absence of conflict, the following embodiments and features can be combined with each other.

[0057] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0058] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0059] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0060] In conceiving and implementing this application, the applicant discovered at least the following problems: the batteries in the battery pack are connected to the crossbeams in the housing via mounting end plates, which is costly and the entire battery pack is bulky.

[0061] The CTP battery pack proposed in this application, through the setting of the suspension point assembly, not only meets the strength of the CTP battery pack and improves the overall structural mode, but also meets the cost reduction requirements of the battery end cap-less design, and can also ensure the seal between the battery and the housing. In addition, the liquid cooling plate exchanges heat with the battery, which can effectively manage the battery temperature and provide good thermal management performance for the entire CTP battery pack system, which helps to improve the performance and life of the CTP battery pack.

[0062] The CTP battery pack provided in this application will be described in detail below with reference to specific embodiments.

[0063] Figure 1 This is a schematic diagram of the CTP battery pack according to an embodiment of this application. Figure 2 This is an exploded view of a CTP battery pack according to an embodiment of this application. Figure 3 This is a partial structural diagram of a CTP battery pack according to an embodiment of this application.

[0064] like Figures 1 to 3 As shown in the figure, this application embodiment proposes a CTP battery pack 100, including:

[0065] The box body 110 includes a box cover 111 and a bottom protective plate 112, which together form a receiving cavity.

[0066] The liquid cooling plate 120 is disposed on the bottom protective plate 112 and located in the receiving cavity. The liquid cooling plate 120 has a liquid cooling flow channel for the flow of coolant.

[0067] The battery is attached to the liquid cooling plate 120, which is used for heat exchange of the battery.

[0068] The lifting point assembly 140 is located in the middle region of the housing 110 along the first direction. The lifting point assembly 140 includes at least two lifting points that are connected to each other. One of the at least two lifting points is sealed to the housing cover 111, and the other of the at least two lifting points is sealed to the bottom guard plate 112.

[0069] The first direction is the length direction of the box 110.

[0070] It is understandable that the purpose of the containment cavity is to house the battery. It is also easy to understand that the containment cavity is sealed to prevent side reactions from occurring inside the battery cell, which could affect the cell's performance.

[0071] For example, the size or shape of the receiving cavity is matched with the size and shape of the battery. Specifically, it can be adjusted according to the actual situation. This application embodiment does not impose too many limitations here.

[0072] In this embodiment, the battery can be configured as a rectangular structure. The battery can be located inside the housing 110.

[0073] Understandably, housing 110 can be used to support the battery.

[0074] The dimensions of the aforementioned housing 110 can be set according to actual needs, and this embodiment of the application does not impose any restrictions on them.

[0075] In addition, it should be noted that the shape of the box 110 is not limited in this embodiment. For example, the box 110 can be a regular shape such as a cuboid or a cylinder. Of course, the box 110 can also be other irregular shapes.

[0076] In one possible implementation, the housing 110 can be a rectangular structure, and the size of the housing 110 can be greater than or equal to the size of the battery, so that the housing 110 can carry the battery.

[0077] In some embodiments, the cover and bottom protective plate 112 provide additional protection for the battery, preventing external environmental factors (such as dust, moisture, and physical impact) from affecting the battery, improving the overall structural integrity of the housing 110, and providing additional rigidity and strength. At the same time, this design also helps to seal the CTP battery pack 100 and maintain the stability of the internal environment.

[0078] In some embodiments, the materials and structure of the cover plate and bottom guard plate 112 can be adjusted according to specific application requirements to adapt to different environmental conditions and performance requirements.

[0079] It should be noted that by installing a liquid cooling plate 120 on the housing 110, and by having liquid cooling channels on the liquid cooling plate 120, the heat generated by the battery can be effectively carried away by the coolant. Liquid cooling technology is generally more efficient than air cooling, and can reduce the battery temperature more quickly, prevent overheating, and improve the battery's operating efficiency and lifespan.

[0080] Furthermore, in some embodiments, the design of the cover and bottom cover 112 facilitates the inspection, maintenance, and replacement of the battery and liquid cooling plate 120. By simply removing the cover or bottom cover 112, internal components can be quickly accessed, reducing maintenance time and costs.

[0081] Accordingly, the presence of the bottom protective plate 112 provides additional protection for the liquid cooling plate 120, preventing it from being damaged during installation and use. At the same time, the effective heat dissipation of the liquid cooling plate 120 also helps prevent battery overheating and improves overall safety.

[0082] It should be noted that the heat exchange function between the liquid cooling plate 120 and the battery can effectively manage the battery temperature, which helps to improve the battery's performance and lifespan.

[0083] It should be noted that the liquid cooling plate 120 enables the battery to effectively exchange heat, keeping it operating within a suitable temperature range. This not only improves battery performance and efficiency but also extends its lifespan.

[0084] In some embodiments, the CTP battery pack 100 also includes an inlet / outlet water nozzle reinforcing bracket 101, which is connected to the inlet / outlet water nozzle base of the liquid cooling plate 120 to improve the structural strength of the water nozzle and provide protection.

[0085] It should be noted that the present application provides a CTP battery pack 100, in which the battery is integrated into the battery pack, thereby achieving a higher volume utilization rate. Since the original end plate structure has been eliminated, in order to improve the installation strength, the CTP battery pack 100 also includes two suspension point assemblies 140, both located in the middle of the housing 110 in the first direction X, and the two suspension point assemblies 140 are spaced apart along the width direction Y of the housing 110.

[0086] Among them, at least two lifting point components are connected to each other, one of which is sealed to the cover 111 and the other is sealed to the bottom guard plate 112. The purpose of this design is to ensure the sealing between the lifting point component 140 and the box body 110 while increasing the lifting point component 140.

[0087] Through the above-mentioned configuration, namely the setting of the suspension point assembly 140, the strength of the CTP battery pack 100 is satisfied, the overall structural mode is improved, the cost reduction requirement of the battery end cap-less design is met, and the seal between the battery pack 100 and the housing 110 is guaranteed. In addition, the liquid cooling plate 120 exchanges heat with the battery, which can effectively manage the battery temperature and provide good thermal management performance for the entire CTP battery pack 100 system, which helps to improve the performance and life of the CTP battery pack 100.

[0088] Figure 4 This is an assembly cross-sectional view of the lifting point assembly and the housing of the CTP battery pack according to an embodiment of this application, as shown below. Figures 1 to 4 As shown, in some optional embodiments, at least two lifting points include a first lifting point 141, a second lifting point 142, a third lifting point 143, and a fourth lifting point 144;

[0089] Among them, the first lifting point 141 and the second lifting point 142 are located inside the housing 110, and the third lifting point 143 and the fourth lifting point 144 are located outside the housing 110.

[0090] The first lifting point 141 and the first ends of the second lifting point 142 are sealed together, and the third lifting point 143 abuts against the box cover 111 and is connected to the first lifting point 141.

[0091] The second end of the second lifting point 142 is sealed to the liquid cooling plate 120, and the fourth lifting point 144 abuts against the bottom protective plate 112 and is connected to the second end of the second lifting point 142.

[0092] It should be noted that by setting multiple lifting points, the modal performance of the overall structure can be improved. In particular, placing the first and second lifting points 141 and 142 inside the housing 110, and the third and fourth lifting points 143 and 144 outside the housing 110, can effectively improve the overall structural strength of the CTP (Cell to Pack) battery pack. This design helps to distribute the load, reduce stress concentration, and thus improve the durability and reliability of the battery pack.

[0093] Furthermore, the sealed connection between the first lifting point 141 and the second lifting point 142, as well as the sealed connection between the second lifting point 142 and the liquid cooling plate 120, ensures the sealing performance between the battery pack and the housing 110. This design effectively prevents the influence of the external environment on the battery pack, such as the intrusion of moisture and dust, thereby improving the safety and service life of the battery pack.

[0094] like Figures 1 to 4 As shown, in some optional embodiments, the lifting point assembly 140 further includes a first lifting point sealing ring 145, a second lifting point sealing ring 146, a third lifting point sealing ring 147, and a fourth lifting point sealing ring 148.

[0095] The first lifting point component 141 and the second lifting point component 142 are sealed together by the first lifting point sealing ring 145;

[0096] The second lifting point sealing ring 146 is located between the first lifting point component 141 and the box cover 111 to seal the first lifting point component 141 and the box cover 111.

[0097] The second end of the second lifting point component 142 is sealed to the liquid cooling plate 120 through the third lifting point sealing ring 147.

[0098] The fourth lifting point sealing ring 148 is located between the second end of the second lifting point component 142 and the bottom protective plate 112 to seal the fourth lifting point component 144 and the bottom protective plate 112.

[0099] It should be noted that by setting a first lifting point sealing ring 145, a second lifting point sealing ring 146, a third lifting point sealing ring 147, and a fourth lifting point sealing ring 148 at each critical connection point, the sealing between the various components is ensured. This design effectively prevents liquids, dust, and other contaminants from entering the battery pack, protecting the safety and performance of the battery cells and extending the service life of the battery pack and its related components.

[0100] In some embodiments, the first lifting point sealing ring 145, the second lifting point sealing ring 146, the third lifting point sealing ring 147, and the fourth lifting point sealing ring 148 not only provide a sealing function, but also buffer the mechanical stress of the connection part to a certain extent, reduce the impact of vibration and impact on the connection part, thereby improving the connection reliability of the entire system.

[0101] In some alternative embodiments, at least one of the first lifting point 141 and the second lifting point 142 is a hollow structure, and at least one of the third lifting point 143 and the fourth lifting point 144 is a locking nut.

[0102] It should be noted that by designing the first lifting point 141 and / or the second lifting point 142 as a hollow structure, the weight of the components can be effectively reduced. This is highly beneficial for the overall lightweight design of the battery pack, contributing to improved vehicle energy efficiency and range. Designing the third lifting point 143 and / or the fourth lifting point 144 as a locking nut improves the stability and reliability of the connection. The locking nut provides better vibration resistance and anti-loosening performance, ensuring the stability of the connection under dynamic loads.

[0103] Furthermore, the hollow structure not only reduces weight but also decreases the amount of material used, thereby lowering production costs. This design optimizes material utilization while maintaining necessary strength and stiffness.

[0104] Furthermore, the lock nut design typically makes installation and disassembly easier, reducing installation time and maintenance difficulty. The use of lock nuts prevents connections from loosening due to vibration or other external forces, thereby improving system safety, especially during vehicle operation.

[0105] like Figures 1 to 4 As shown, in some optional embodiments, the housing 110 further includes a frame member 113, which is disposed on the bottom protective plate 112 and surrounds the outer periphery of the battery.

[0106] It should be noted that the frame member 113 provides additional structural support, enhancing the overall rigidity and strength of the battery pack. By being positioned around the outer periphery of the battery, the frame member 113 can effectively distribute and withstand mechanical loads from the outside, protecting the battery from damage caused by impacts and vibrations.

[0107] Furthermore, the frame member 113 provides a physical barrier to the battery, preventing direct impact and damage from external objects. This design helps improve battery safety, especially in the event of an accidental collision.

[0108] The use of frame component 113 facilitates a modular design for the battery pack, allowing different parts to be manufactured and assembled independently. This modular design improves production flexibility and efficiency, and simplifies maintenance and replacement processes.

[0109] In some embodiments, the frame member 113 may be a roll-formed steel profile.

[0110] In some embodiments, the frame member 113 may include multiple side frames of different lengths, which are welded together by carbon dioxide gas shielded welding to ensure the strength and flatness of the overall frame member 113 welding.

[0111] In some embodiments, the present application uses rolled steel profiles and aluminum extrusion profiles to ensure that the structural mode is not lower than 45 Hz while also ensuring a lightweight design with an energy density greater than 125 Wh / kg.

[0112] In some embodiments, the frame member 113 is a profile member.

[0113] It should be noted that profile components are typically manufactured through extrusion or stretching processes, which are suitable for mass production, significantly improving manufacturing efficiency and shortening production cycles. Furthermore, the manufacturing processes for profile components are relatively mature and cost-effective, especially in large-scale production, effectively reducing manufacturing costs. They generally possess good structural strength and consistency, providing reliable mechanical properties and ensuring the stability and durability of the CTP battery pack.

[0114] like Figures 1 to 4 As shown, in some optional embodiments, the box body 110 further includes a plurality of limiting beams 114, which are spaced apart along the first direction on the frame member 113;

[0115] The battery is located between two adjacent limiting beams 114.

[0116] It should be noted that the limiting beam 114 provides a clear positioning and fixing function for the battery, simplifying the battery assembly process and reducing assembly time and error rate. By placing the battery between adjacent limiting beams 114, displacement of the battery during transportation or use can be effectively prevented, ensuring its stability within the housing 110.

[0117] Furthermore, the limiting beam 114 can absorb and disperse shocks and vibrations from the outside, further protecting the battery from mechanical damage. This design helps extend battery life, especially during vehicle operation.

[0118] The setting of the limiting beam 114 enhances the overall structural integrity of the frame member 113. By adding the limiting beam 114 within the frame, the rigidity and strength of the box 110 can be improved, thereby enhancing its load-bearing capacity.

[0119] In some embodiments, there are three limiting beams 114, which are welded to the frame members 113 of the housing 110 by carbon dioxide gas shielded welding; the vertical flatness and opening size of the limiting beams 114 ensure that the battery can be smoothly inserted into the housing.

[0120] Accordingly, there are two sets of batteries.

[0121] Figure 5 This is an assembly cross-sectional view of the liquid cooling plate and bottom protective plate of the CTP battery pack according to an embodiment of this application, as shown below. Figures 1 to 5 As shown, in some optional embodiments, the CTP battery pack 100 further includes a structural sealant 130, a liquid cooling plate 120 is disposed on the frame member 113 through the structural sealant 130, and the liquid cooling plate 120 is located between the frame member 113 and the bottom protective plate 112.

[0122] It should be noted that the liquid cooling plate 120 is connected, fixed, and sealed to the bottom of the frame component 113 via structural sealant 130 and large flange rivet nuts. Furthermore, the structural sealant 130 not only serves to connect and fix the aluminum stamped liquid cooling plate 120 to the roll-formed steel profile, but also ensures the sealing requirements inside the enclosure, meeting the overall sealing performance requirements of the package.

[0123] like Figures 1 to 5 As shown, in some alternative embodiments, the CTP battery pack 100 further includes a lug 150 and a reinforcing plate 160, the lug 150 being disposed on the reinforcing plate 160, the reinforcing plate 160 being disposed on the side wall of the frame member 113.

[0124] It should be noted that the lifting lug 150 facilitates the lifting and transportation of the battery pack. By installing the lifting lug 150 on the reinforcing plate 160, it is ensured that the force is evenly distributed during lifting, reducing potential damage to the battery pack. The combined design of the reinforcing plate 160 and the lifting lug 150 improves the safety of the battery pack during transportation and installation. The reinforcing plate 160 provides additional support to prevent sidewall deformation or damage that may occur during lifting.

[0125] In some embodiments, the frame member 113 is provided with a plurality of lifting lugs 150 on its outer periphery to facilitate transportation and lifting.

[0126] In some embodiments, a plurality of lifting lugs 150 and a plurality of reinforcing plates 160 are welded to the frame members 113 of the housing 110 by carbon dioxide gas shielded welding.

[0127] The upper mounting surfaces of each lug 150 have the same flatness.

[0128] In some alternative implementations, any of the following are included:

[0129] Liquid cooling plate 120 is an aluminum stamped liquid cooling plate 120;

[0130] Bottom guard plate 112 is a hot-formed steel plate part;

[0131] The bottom of the bottom guard plate 112 is provided with an armor layer;

[0132] The CTP battery pack 100 also includes a support foam 170, which is disposed between the liquid cooling plate 120 and the bottom protective plate 112 to support the liquid cooling plate 120.

[0133] In some alternative implementations, the liquid cooling plate 120 is an integrally stamped cold plate.

[0134] In some embodiments, the liquid cooling plate 120 is an aluminum stamped liquid cooling plate 120, which is directly connected and fixed to the frame member 113 of the housing 110 to form an integrated liquid-cooled CTP battery pack 100. The aluminum stamped liquid cooling plate 120 has the advantages of lightweight structure and low cost. At the same time, the flow channel structure of the aluminum stamped liquid cooling plate 120 also provides a better performance foundation for the thermal management system.

[0135] It should be noted that the bottom guard plate 112 is made of HC950 / 1300HS+AS ultra-high strength steel plate hot forming to improve bottom protection. Thinner plates can also be used for stamping to achieve a lightweight structural design.

[0136] In some embodiments, the bottom protective plate 112 is fixed to the large flange rivet nut on the riveting and frame member 113 by screwing. The bottom of the bottom protective plate 112 is sprayed with a PVC protective layer to protect the bottom of the battery. The bottom protective plate 112 plays a crucial role in protecting the flow channel of the bottom liquid cooling plate 120 and the bottom of the battery cell. It is necessary not only to ensure the structural strength of the bottom protective plate 112, but also to leave a sufficient safety gap between the bottom protective plate 112 and the liquid cooling plate 120 after installation.

[0137] In some embodiments, the armor layer may be made of corrosion-resistant and chemical-resistant materials, enabling the battery pack to maintain good performance under various environmental conditions.

[0138] It should be noted that the support foam 170 provides additional support to ensure the stability of the liquid cooling plate 120 within the battery pack. By filling the space between the liquid cooling plate 120 and the bottom protective plate 112 with foam, displacement or deformation of the liquid cooling plate 120 under dynamic loads can be prevented.

[0139] In addition, the support foam 170 has good elasticity and cushioning properties, effectively absorbing and mitigating vibrations and impacts generated during vehicle operation. The foam material is typically lightweight and does not significantly increase the overall weight of the battery pack.

[0140] In some embodiments, the lid 111 is made of lightweight composite material PU, which further achieves a lightweight structure and improves energy density.

[0141] In some embodiments, the CTP battery pack 100 further includes a first seal 180 disposed between the bottom cover plate 112 and the frame member 113.

[0142] It should be noted that the first seal 180 prevents dust, moisture, and other contaminants from entering the interior of the housing 110, protecting critical components such as the battery from external environmental influences. Effective sealing reduces the risk of leakage and contamination, thereby lowering the frequency and cost of maintenance and repair, and extending the system's lifespan.

[0143] In some embodiments, the first seal 180 may be a sealing ring.

[0144] In some embodiments, the first seal 180 is foamed silicone, which is adhered to the sealing area formed after the liquid cooling plates 120 are spliced.

[0145] In some embodiments, the CTP battery pack 100 further includes a second seal 190 disposed between the cover 111 plate and the frame member 113, wherein the material of the second seal 190 can be referenced to the first seal 180.

[0146] The CTP battery pack provided in this application embodiment includes a housing, including a housing cover and a bottom protective plate, the housing cover and the bottom protective plate forming a receiving cavity; a liquid cooling plate disposed on the bottom protective plate and located within the receiving cavity, the liquid cooling plate having a liquid cooling channel for coolant flow; a battery attached to the liquid cooling plate, the liquid cooling plate being used for heat exchange of the battery; and a lifting point assembly located in the middle region of the housing along a first direction, the lifting point assembly including at least two lifting points, the at least two lifting points being interconnected, one of the at least two lifting points being sealed to the housing cover, and the other of the at least two lifting points being sealed to the bottom protective plate; wherein, the first direction is the length direction of the housing.

[0147] By setting up the suspension point assembly, the strength of the CTP battery pack is guaranteed, the overall structural mode is improved, the cost reduction requirement of the battery end cap-less design is met, and the seal between the battery pack and the housing is ensured. In addition, the liquid cooling plate exchanges heat with the battery, which can effectively manage the battery temperature and provide good thermal management performance for the entire CTP battery pack system, which helps to improve the performance and life of the CTP battery pack.

[0148] In addition, this application also provides an electronic device, including the CTP battery pack 100 described above.

[0149] It should be noted that the specific structure of the CTP battery pack 100 will not be discussed in detail here; please refer to the above.

[0150] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0151] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0152] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A CTP battery pack (100), characterized in that, include: The box body (110) includes a box cover (111) and a bottom guard plate (112), the box cover (111) and the bottom guard plate (112) forming a receiving cavity; A liquid cooling plate (120) is disposed on the bottom protective plate (112) and located in the receiving cavity. The liquid cooling plate (120) has a liquid cooling channel for the flow of coolant. The battery is attached to the liquid cooling plate (120), which is used to exchange heat with the battery; A lifting point assembly (140) is located in the middle region of the housing (110) along a first direction. The lifting point assembly (140) includes at least two lifting points, which are interconnected. One of the at least two lifting points is sealed to the housing cover (111), and the other of the at least two lifting points is sealed to the bottom guard plate (112). Wherein, the first direction is the length direction of the box (110).

2. The CTP battery pack (100) according to claim 1, characterized in that, At least two of the lifting points include a first lifting point (141), a second lifting point (142), a third lifting point (143), and a fourth lifting point (144); The first lifting point (141) and the second lifting point (142) are located inside the housing (110), and the third lifting point (143) and the fourth lifting point (144) are located outside the housing (110). The first lifting point (141) and the second lifting point (142) are sealed at their first ends, and the third lifting point (143) abuts against the box cover (111) and is connected to the first lifting point (141). The second end of the second lifting point (142) is sealed to the liquid cooling plate (120), and the fourth lifting point (144) abuts against the bottom protective plate (112) and is connected to the second end of the second lifting point (142).

3. The CTP battery pack (100) according to claim 2, characterized in that, The lifting point assembly (140) further includes a first lifting point sealing ring (145), a second lifting point sealing ring (146), a third lifting point sealing ring (147), and a fourth lifting point sealing ring (148); The first lifting point component (141) and the second lifting point component (142) are sealed together by the first lifting point sealing ring (145); The second lifting point sealing ring (146) is located between the first lifting point component (141) and the box cover (111) to seal the first lifting point component (141) and the box cover (111); The second end of the second lifting point component (142) is sealed to the liquid cooling plate (120) through the third lifting point sealing ring (147); The fourth lifting point sealing ring (148) is located between the second end of the second lifting point component (142) and the bottom protective plate (112) to seal the fourth lifting point component (144) and the bottom protective plate (112).

4. The CTP battery pack (100) according to claim 3, characterized in that, At least one of the first lifting point (141) and the second lifting point (142) is a hollow structure, and at least one of the third lifting point (143) and the fourth lifting point (144) is a locking nut.

5. The CTP battery pack (100) according to any one of claims 1-4, characterized in that, The housing (110) also includes a frame member (113), which is disposed on the bottom protective plate (112) and surrounds the outer periphery of the battery.

6. The CTP battery pack (100) according to claim 5, characterized in that, The box body (110) also includes a plurality of limiting beams (114), which are spaced apart along the first direction on the frame member (113); The battery is located between two adjacent limiting beams (114).

7. The CTP battery pack (100) according to claim 5, characterized in that, The CTP battery pack (100) also includes a structural sealant (130), the liquid cooling plate (120) is disposed on the frame member (113) through the structural sealant (130), and the liquid cooling plate (120) is located between the frame member (113) and the bottom protective plate (112).

8. The CTP battery pack (100) according to claim 5, characterized in that, The CTP battery pack (100) also includes a lifting lug (150) and a reinforcing plate (160), the lifting lug (150) being disposed on the reinforcing plate (160), and the reinforcing plate (160) being disposed on the side wall of the frame member (113).

9. The CTP battery pack (100) according to any one of claims 1-4, characterized in that, Includes any of the following: The liquid cooling plate (120) is an aluminum stamped liquid cooling plate (120); The bottom protective plate (112) is a hot-formed steel plate part; The bottom of the bottom protective plate (112) is provided with an armor layer; The CTP battery pack (100) also includes a support foam (170) disposed between the liquid cooling plate (120) and the bottom protective plate (112) to support the liquid cooling plate (120).

10. An electronic device, characterized in that, Includes the CTP battery pack (100) as described in any one of claims 1 to 9.

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