Liquid cooling shunting integrated device and power battery system

Abstract

The utility model provides a liquid cooling shunting integration device and a power battery system, the liquid cooling shunting integration device comprises a box penetrating joint assembly, a water inlet pipe assembly and a water return pipe assembly, the box penetrating joint assembly comprises a water inlet, a water outlet, a first adapter, a second adapter and a box penetrating joint body, the water inlet is communicated with the first adapter, and the water outlet is communicated with the second adapter; one end of the water inlet pipe assembly is connected with the first adapter, the water outlet is communicated with the interior of the second adapter, one end of the water return pipe assembly is connected with the second adapter, the other ends of the water inlet pipe assembly and the water return pipe assembly are connected with at least two water outlet connectors or water return connectors respectively, and the water outlet connectors and the water return connectors are used for being connected with the liquid cooling plate. The liquid cooling plate is cooled, cooling liquid flows back, the battery cooling efficiency is improved, the temperature difference among the multiple modules is reduced, and the water inlet pipe assembly and the water return pipe assembly are both arranged to be of a U-shaped structure so as to save the design space.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power battery systems, in particular to a liquid cooling shunt integrated device. BACKGROUND

[0002] At present, in the field of automobile power batteries, liquid cooling and direct cooling schemes are the mainstream battery cooling methods. In these two schemes, the cooling liquid delivery pipeline connected with the vehicle end is mainly a plastic corrugated pipe and an aluminum pipe.

[0003] Due to the gradual increase in volume energy density of current automobile power battery packs, the internal space of the power battery pack is increasingly narrow, and the arrangement space of the cooling liquid delivery pipeline is severely limited. In related technologies, the design of the cooling liquid delivery pipeline has low cooling efficiency of the liquid cooling plate and large temperature difference between multiple battery modules. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the present application provides a liquid cooling shunt integrated device to at least solve the problems of the current narrow internal space of the power battery pack, the severely limited arrangement space of the cooling liquid delivery pipeline, and the low cooling efficiency of the liquid cooling plate and the large temperature difference between multiple battery modules.

[0005] To achieve the above-mentioned purpose, the technical scheme of the present application is as follows:

[0006] The present application provides a liquid cooling shunt integrated device, which comprises a through-box joint assembly, a water inlet pipe assembly and a water return pipe assembly;

[0007] The through-box joint assembly comprises a water inlet, a water outlet, a first adapter, a second adapter and a through-box joint body;

[0008] The water inlet and the water outlet are arranged on one side of the through-box joint body along a second direction, and the first adapter and the second adapter are arranged on the other side of the through-box joint body along a third direction;

[0009] The water inlet is in communication with the first adapter, and one end of the water inlet pipe assembly is connected with the first adapter;

[0010] The water outlet is in communication with the second adapter, and one end of the water return pipe assembly is connected with the second adapter;

[0011] The other end of the water inlet pipe assembly is connected with at least two water outlet joints, and the other end of the water return pipe assembly is connected with at least two water return joints;

[0012] The water outlet joints and the water return joints are used for connecting liquid cooling plates, and the water inlet pipe assembly and the water return pipe assembly are both arranged in a U-shaped structure.

[0013] Optionally, the liquid-cooled shunt integration device further includes a temperature sensor;

[0014] The temperature sensor is fixedly connected to the connection point between the through-box connector body and the first adapter.

[0015] Optionally, the through-box connector body is provided with three sets of pre-embedded nuts arranged side by side along the first direction (X), and each set of pre-embedded nuts includes at least two nuts;

[0016] The three sets of pre-embedded nuts are spaced apart from the first adapter and the second adapter, and protrude from the body of the through-box connector along the second direction (Y).

[0017] Optionally, the water inlet pipe assembly includes a first water inlet pipe and at least one section of a second water inlet pipe;

[0018] The first water inlet pipe has a U-shaped structure; one end of the first water inlet pipe is connected to the first adapter, and the other end is connected to one of the water outlet connectors;

[0019] The two ends of the second water inlet pipe are respectively connected to two water outlet connectors;

[0020] The first water inlet pipe is made of polyurethane, and the second water inlet pipe is made of plastic corrugated pipe.

[0021] Optionally, the return water pipe assembly includes a first return water pipe and at least one section of a second return water pipe;

[0022] The first return water pipe has a U-shaped structure; one end of the first return water pipe is connected to the second adapter, and the other end is connected to one of the return water connectors;

[0023] The two ends of the second return water pipe are respectively connected to the two return water connectors;

[0024] The first return water pipe is made of polyurethane, and the second return water pipe is made of plastic corrugated pipe.

[0025] Optionally, the number of water outlet connectors is two, namely a first water outlet connector and a second water outlet connector;

[0026] The first water outlet connector is a T-type tee connector with openings at both ends of the third direction (Z) and the second direction (Y); the second water outlet connector is an L-type dee connector with openings at both ends of the third direction (Z) and the second direction (Y).

[0027] The two opposite ends of the first water outlet connector are respectively connected to one end of the first water inlet pipe and one end of the second water inlet pipe; the opening of the second water outlet connector along the third direction (Z) is connected to one end of the second water inlet pipe;

[0028] The openings of the first and second water outlet connectors along the second direction (Y) are used to connect the two liquid cooling plates.

[0029] Optionally, the number of return water connectors is two, namely a first return water connector and a second return water connector;

[0030] The first return water connector is a T-type tee connector with openings at both ends in the third direction (Z) and the second direction (Y); the second return water connector is an L-type d-connector with openings in the third direction (Z) and the second direction (Y).

[0031] The two opposite ends of the first return water connector are respectively connected to one end of the first return water pipe and one end of the second return water pipe; the opening of the second return water connector along the third direction (Z) is connected to one end of the second return water pipe.

[0032] The openings of the first and second return water connectors along the second direction (Y) are used to connect the two liquid cooling plates.

[0033] Optionally, the body of the through-box connector is provided with a sealing ring on the periphery of the side where the water inlet is located.

[0034] Optionally, the through-box connector assembly is processed into a single piece using an integrated injection molding process.

[0035] This application also provides a power battery system, including a housing and a liquid-cooled shunt integrated device as described above, wherein the through-housing connector assembly is installed on the housing, and the water inlet pipe assembly and the water return pipe assembly are located inside the housing.

[0036] Compared with related technologies, the beneficial effects of this utility model's technical solution are as follows:

[0037] First, the inlet and outlet water pipe assemblies adopt a U-shaped structure, which saves design space and solves the problem of limited internal space of the power battery pack and small space for the arrangement of coolant delivery pipelines in related technologies.

[0038] 2. Both the inlet and outlet water pipe assemblies are connected in parallel, with at least two outlet or return water connectors connected to the inlet and outlet water pipes respectively. This allows for cooling and coolant return to at least two liquid cooling plates, which can effectively improve battery cooling efficiency and reduce the temperature difference between multiple modules. Attached Figure Description

[0039] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0040] Figure 1This is a schematic diagram of the liquid-cooled split-flow integrated device in the embodiments of this application;

[0041] Figure 2 This is a rear view of the liquid-cooled split-flow integrated device in the embodiments of this application;

[0042] Figure 3 This is a front view of the liquid-cooled split-flow integrated device in the embodiments of this application;

[0043] Figure 4 This is a side view of the liquid-cooled split-flow integrated device in the embodiments of this application;

[0044] Explanation of reference numerals in the attached drawings: 10-Through-box connector assembly, 20-Inlet pipe assembly, 30-Return pipe assembly, 11-Inlet, 12-Outlet, 13-Through-box connector body, 14-Embedded nut, 141-Nut opening, 15-Temperature sensor, 16-First adapter, 17-Second adapter, 18-Sealing ring, 21-First inlet pipe, 22-First outlet connector, 23-Second outlet connector, 24-Second inlet pipe, 25-Outlet connector, 31-First return pipe, 32-First return connector, 33-Second return connector, 34-Second return pipe, 35-Return connector, 19-Hollowed-out structure. Detailed Implementation

[0045] 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.

[0046] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0047] The terms "comprising," "including," or any other variations thereof used in the specification and claims of this application are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0048] The liquid-cooled splitter integrated device provided in this application is described in detail below through specific embodiments.

[0049] Reference Figure 1 The liquid-cooled splitter assembly includes a through-box connector assembly 10, an inlet pipe assembly 20, and a return pipe assembly 30. The through-box connector assembly 10 includes an inlet 11, an outlet 12, a first adapter 16, a second adapter 17, and a through-box connector body 13. The inlet 11 and outlet 12 are disposed on one side of the through-box connector body 13 along a second direction Y, and the first adapter 16 and the second adapter 17 are disposed on the other side of the through-box connector body 13 along a third direction Z. The inlet 11 and the first... The adapter 16 is internally connected, and one end of the water inlet pipe assembly 20 is connected to the first adapter 16; the water outlet 12 is internally connected to the second adapter 17, and one end of the water return pipe assembly 30 is connected to the second adapter 17; the other end of the water inlet pipe assembly 20 is connected to at least two water outlet connectors 25; the other end of the water return pipe assembly 30 is connected to at least two water return connectors 35; the water outlet connectors 25 and the water return connectors 35 are used to connect the liquid cooling plate; both the water inlet pipe assembly 20 and the water return pipe assembly 30 are configured with a U-shaped structure.

[0050] Specifically, such as Figures 1 to 4 As shown, the through-box connector assembly 10 includes a through-box connector body 13, an inlet 11 and an outlet 12 disposed on one side of the through-box connector body 13 along a second direction (Y), and a first adapter 16 and a second adapter 17 disposed on the other side of the through-box connector body 13 along a third direction (Z). The through-box connector body 13 is used to fix it to the mounting box. The mounting box is provided with a liquid cooling plate connected to the liquid cooling distribution integration device. The inlet 11 and the outlet 12 are disposed on the side of the through-box connector body 13 away from the liquid cooling plate (i.e., the outer side of the mounting box). The first adapter 16 and the second adapter 17 are disposed on the side of the through-box connector body 13 close to the liquid cooling plate (i.e., the inner side of the mounting box). The inlet 11 is disposed opposite to the first adapter 16, and the outlet 12 is disposed opposite to the second adapter 17.

[0051] In some embodiments, the side of the through-box connector body 13 where the water inlet 11 is located is fixed to the mounting box using an adhesive material, resulting in uniform stress distribution at the connection point and eliminating the need for complex installation steps. In other embodiments, the through-box connector body 13 is fixed to the mounting box using screws and nuts, providing a more stable connection and ensuring the reliability of the fixation between the through-box connector body 13 and the mounting box.

[0052] One end of the inlet pipe assembly 20 is connected to the first adapter 16, which communicates with the inlet 11. One end of the return pipe assembly 30 is connected to the second adapter 17, which communicates with the outlet 12. The other end of the inlet pipe assembly 20 is connected to at least two outlet connectors 25, and the other end of the return pipe assembly 30 is connected to at least two return connectors 35. The outlet connectors 25 and return connectors 35 are used to connect to the liquid cooling plate. Both the inlet pipe assembly 20 and the return pipe assembly 30 are U-shaped.

[0053] In actual use, the coolant flows into the inlet pipe assembly 20 through the inlet 11, the through-box connector body 13, and the first adapter 16, and then flows into at least two liquid cooling plates through the outlet connector 25, enabling one inlet pipe line to cool at least two liquid cooling plates. When the coolant from the liquid cooling plates flows back, the coolant from at least two liquid cooling plates flows into the outlet 12 through the return water connector 35, the return water assembly 30, the second adapter 17, and the through-box connector body 13, enabling the coolant from at least two liquid cooling plates to flow back using one return water line.

[0054] Both the inlet pipe assembly 20 and the return pipe assembly 30 adopt a U-shaped structure, which can adapt to the limited installation space compared to a straight pipe. It converts the coolant flowing in the second direction (Y) to flow in the third direction (Z) to complete the pipeline layout inside the confined equipment. Since the inlet pipe assembly 20 and the return pipe assembly 30 are connected to multiple liquid cooling plates through the outlet connector 25 and the return connector 35, the coolant delivered in is distributed from one inlet pipe assembly 20 to multiple liquid cooling plates, and the coolant in multiple liquid cooling plates is collected into one return pipe assembly 30. This allows a single pipeline to cool and reduce the temperature of at least two liquid cooling plates and return the coolant, effectively improving the battery cooling efficiency and reducing the temperature difference between multiple modules.

[0055] Optional, refer to Figure 2 and Figure 4 The liquid-cooled shunt integrated device also includes a temperature sensor 15; the temperature sensor 15 is fixedly connected to the connection between the through-box connector body 13 and the first adapter 16.

[0056] Specifically, the temperature sensor 15 has an approximately cylindrical structure and is fixedly installed at the connection between the first adapter 16 and the through-box connector body 13, and is used to detect the coolant temperature when water enters.

[0057] In some embodiments, the temperature sensor 15 is a thin-film temperature sensor, which is bonded to the outer surface of the through-box connector body 13 with thermally conductive adhesive. By measuring the temperature of the outer surface of the through-box connector body 13, it is determined whether the coolant temperature meets the requirements. This method is simple to assemble and does not require modification such as drilling holes in the through-box connector body 13, avoiding the risk of coolant leakage. In other embodiments, the temperature sensor 15 is a thermistor temperature sensor. A small hole is pre-drilled in the through-box connector body 13, and the detection end of the thermistor temperature sensor directly contacts the coolant through the pre-drilled hole. The body of the thermistor temperature sensor is fixedly installed at the connection between the first adapter 16 and the through-box connector body 13 with screws and nuts. This method can quickly and accurately detect changes in water temperature and reduce errors in the heat conduction process.

[0058] Installing a temperature sensor 15 to monitor the inlet water temperature allows for real-time monitoring and rapid, precise adjustment of parameters such as coolant flow rate and cooling capacity. This ensures the liquid cooling plate remains within a suitable temperature range, preventing overheating-related malfunctions. Secondly, continuous monitoring of the inlet water temperature helps identify potential cooling system problems promptly. Any abnormal temperature fluctuations—whether a sudden rise in inlet water temperature indicates a cooling source malfunction or an abnormal drop suggests a pipe leak—allow maintenance personnel to respond quickly, reducing equipment downtime, extending equipment lifespan, and effectively ensuring the safe, stable, and efficient operation of the entire system.

[0059] Optional, refer to Figures 2 to 4 The body 13 of the through-box connector has three sets of pre-embedded nuts 14 arranged side by side along the first direction X. Each set of pre-embedded nuts 14 includes at least two nuts. The three sets of pre-embedded nuts 14 are spaced apart from the first adapter 16 and the second adapter 17, and protrude from the body 13 of the through-box connector along the second direction Y.

[0060] Specifically, each set of pre-embedded nuts 14 includes at least two nuts symmetrically arranged along the central axis of the through-box connector body 13 in the third direction (Z). The opening 141 of the pre-embedded nut 14 is located on the side where the through-box connector body 13 connects to the inlet 11. The pre-embedded nut 14 protrudes from the through-box connector body 13 in the second direction (Y), providing a preset depth for screwing in screws and facilitating connection with the connecting box. There are three sets of pre-embedded nuts 14, which are spaced apart from the first adapter 16 and the second adapter 17. Each set of pre-embedded nuts 14 has an approximately elliptical protrusion on the side where the through-box connector body 13 connects to the first adapter 16, providing a preset length for the pre-embedded nut 14 and sealing the opening of the pre-embedded nut.

[0061] Pre-embedded nuts 14 during the integral injection molding of the through-box connector assembly 10 provide a reliable threaded connection when connecting the through-box connector assembly 10 to the connecting box, which is more robust than installing nuts later and can withstand greater tensile, compressive, and shear forces. Simultaneously, the pre-embedded nuts simplify and expedite the installation process of the connecting box and the through-box connector assembly 10; during assembly, bolts or screws are simply screwed directly into the pre-embedded nuts 14, eliminating the need for additional nut installation steps. Furthermore, each set of pre-embedded nuts 14 consists of at least two nuts, symmetrically arranged along the central axis of the through-box connector body 13 in the third direction (Z), ensuring at least two symmetrical connections between the through-box connector body 13 and the connecting box in the third direction (Z), further enhancing the reliability of the connection between the through-box connector assembly 10 and the connecting box.

[0062] Optional, refer to Figures 1 to 4 The water inlet pipe assembly 20 includes a first water inlet pipe 21 and at least one section of a second water inlet pipe 24; the first water inlet pipe 21 has a U-shaped structure; one end of the first water inlet pipe 21 is connected to a first adapter 16, and the other end is connected to a water outlet connector 25; the two ends of the second water inlet pipe 24 are respectively connected to two water outlet connectors 25; wherein, the first water inlet pipe 21 is made of PU pipe (Polyurethane Tube), and the second water inlet pipe 24 is made of plastic corrugated pipe.

[0063] Specifically, the first inlet pipe 21 has a U-shaped structure along the third direction (Z), with the bent end of the U-shape located away from the through-hole connector assembly 10. One end of the U-shape is connected to the first adapter 16, and the other end is connected to an outlet connector 25. The two ends of the second inlet pipe 24 are respectively connected to two outlet connectors 25. That is, the first inlet pipe 21 and the second inlet pipe 24 are connected through an outlet connector 25. When there are multiple sections of the second inlet pipe 24, the two sections of the second inlet pipe 24 are also connected through outlet connectors 25, so that the coolant flows from the inlet 11 through the first adapter 16 into the first inlet pipe 21, and then into the second inlet pipe 24. Since the outlet connector 25 is used to connect the liquid cooling plate, that is, each section of the inlet pipe can be connected to a liquid cooling plate, so that the coolant can be transported to multiple liquid cooling plates through a single inlet pipe.

[0064] In some embodiments, the first inlet pipe 21 and the second inlet pipe 24 are connected to the first adapter 16 and the outlet connector 25 respectively via a compression fitting. The compression fitting fits tightly with the inlet pipe, effectively preventing coolant leakage under normal use. This eliminates the need for heating the pipes or using complex tools, making assembly convenient. In other embodiments, the first inlet pipe 21 and the second inlet pipe 24 are connected to the first adapter 16 and the outlet connector 25 respectively via a socket connection. Socket connections do not require complex equipment; simply insert the pipe into the fitting and install the sealing material. Installation is quick and easy. Furthermore, if a fitting or pipe malfunctions, the socket connection facilitates disassembly and replacement, effectively reducing maintenance costs and difficulty. The specific connection method can be selectively set according to the specific design scheme, and this application does not limit it.

[0065] In some embodiments, the end of the first water inlet pipe 21 connected to the first adapter 16 extends a predetermined distance along a third direction (Z), then bends in the opposite direction to the first direction (X) to form a quarter-circle bend and extend for a predetermined distance, then bends again in the third direction (Z) to form a quarter-circle bend and extend for a predetermined distance, and then bends in the opposite direction to the third direction (Z) to form a U-shaped structure. That is, the end of the first water inlet pipe 21 connected to the first adapter 16 in the U-shaped structure is bent in the opposite direction to the first direction (X) and extended for a predetermined distance. This arrangement can be coordinated with the installation of other components or avoid the position of other components to more rationally plan the internal space. In practical applications, the first water inlet pipe 21 can be bent in different directions based on the U-shaped structure according to the specific design scheme. The specific bending direction is selectively set by the specific design scheme, and the embodiments of this application do not limit it.

[0066] The first inlet pipe 21 is designed with a U-shaped structure, which can adapt to relatively small installation spaces, thus enabling reasonable pipeline layout within confined equipment. Since the first inlet pipe 21 requires a U-shaped bend, PU tubing is used. PU tubing is flexible and has excellent bending performance, adapting to complex and varied installation spaces. It allows for pipeline layout in narrow or irregularly shaped areas, greatly improving installation convenience. Secondly, because the internal channels of PU tubing are relatively smooth and continuous, the fluid encounters relatively little resistance when flowing through bends, thus limiting the increase in flow resistance. Furthermore, to meet flow resistance requirements, the space required at bends is smaller than that of corrugated plastic pipes, satisfying the requirement for pipeline layout in confined spaces.

[0067] The second inlet pipe 24 needs to be connected in parallel with a liquid cooling plate to the connector. During equipment operation, vibrations will occur between the liquid cooling plate and the through-box connector assembly 10. Therefore, the second inlet pipe 24 uses a plastic corrugated pipe. Due to the corrugated structure of the plastic corrugated pipe, it has strong flexibility and can better absorb vibrations and impacts in the pipeline system compared to ordinary straight pipes, providing additional buffer protection for the liquid cooling system and making the system operate more smoothly. On the other hand, the plastic corrugated pipe has a certain degree of extensibility. When environmental factors such as temperature and pressure change, it can adaptively expand and contract, effectively avoiding problems such as loosening or cracking of pipeline connections caused by thermal expansion and contraction.

[0068] Optional, refer to Figures 2 to 4 The return water pipe assembly 30 includes a first return water pipe 31 and at least one section of a second return water pipe 34; the first return water pipe 31 has a U-shaped structure; one end of the first return water pipe 31 is connected to a second adapter 17, and the other end is connected to a return water connector 35; the two ends of the second return water pipe 34 are respectively connected to two return water connectors 35; wherein, the first return water pipe 31 is made of PU pipe, and the second return water pipe 34 is made of plastic corrugated pipe.

[0069] Specifically, the first return water pipe 31 has a U-shaped structure along the third direction (Z). The curved end of the U-shaped structure is located on the side away from the through-box connector assembly 10. One end of the U-shaped structure is connected to the second adapter 17, and the other end is connected to the return water connector 35. The two ends of the second return water pipe 34 are respectively connected to two return water connectors 35. That is, the first return water pipe 31 and the second return water pipe 34 are connected through a return water connector 35. When there are multiple sections of the second return water pipe 34, the two sections of the second return water pipe 34 are also connected through return water connectors 35, so that the coolant from multiple liquid cooling plates through multiple sections of the second return water pipe 34 is collected into the first return water pipe 31, and then flows out through the second adapter 17 and the outlet 12 via the first return water pipe 31. Since the return water connector 35 is used to connect the liquid cooling plates, that is, a liquid cooling plate can be connected at the joint of each section of the return water pipe, so the coolant of multiple liquid cooling water pipes can be returned through a single return water line.

[0070] In some embodiments, the first return water pipe 31 and the second return water pipe 34 are connected to the second adapter 17 and the return water connector 35 respectively using a compression fitting method. In this connection method, the compression fitting fits tightly with the return water pipe, effectively preventing coolant leakage during normal use, and eliminating the need for heating the pipes or using complex tools, making assembly very convenient. In other embodiments, the first return water pipe 31 and the second return water pipe 34 are connected to the second adapter 17 and the return water connector 35 respectively using a socket connection. Socket connections require no complex equipment; simply inserting the pipe into the fitting and installing the sealing material is sufficient, making installation quick and easy. Furthermore, if a fitting or pipe malfunctions, the socket connection facilitates disassembly and replacement, effectively reducing maintenance costs and difficulty. Specific connection methods can be selectively set according to specific design schemes, and this application embodiment does not limit this.

[0071] Designing the first return water pipe 31 as a U-shaped structure allows it to adapt to the confined space of the power battery pack, enabling efficient pipeline layout within this small area. Since the first return water pipe 31 requires a U-shaped bend, PU tubing is used. PU tubing is flexible and possesses excellent bending performance, adapting to complex and varied installation spaces. It allows for pipeline layout in narrow or irregularly shaped areas, greatly improving installation convenience. Secondly, because the internal channels of PU tubing are relatively smooth and continuous, the fluid encounters less resistance when flowing through bends, thus limiting the increase in flow resistance. Furthermore, to meet flow resistance requirements, the space required at bends is smaller than that of corrugated plastic pipes, satisfying the requirement for pipeline layout in confined spaces.

[0072] The second return water pipe 34 needs to be connected in parallel with a liquid cooling plate to the connector. During equipment operation, vibrations will occur between the liquid cooling plate and the through-box connector assembly 10. Therefore, the second return water pipe 34 uses a plastic corrugated pipe. Due to the corrugated structure of the plastic corrugated pipe, it has strong flexibility and can better absorb vibrations and impacts in the pipeline system compared to ordinary straight pipes, providing additional buffer protection for the liquid cooling system and making the system operate more smoothly. On the other hand, the plastic corrugated pipe has a certain degree of extensibility. When environmental factors such as temperature and pressure change, it can adaptively expand and contract, effectively avoiding problems such as loosening or cracking of pipeline connections caused by thermal expansion and contraction.

[0073] Optional, refer to Figures 1 to 4There are two water outlet connectors 25, namely the first water outlet connector 22 and the second water outlet connector 23; the first water outlet connector 22 is a T-shaped tee connector with openings at both ends in the third direction (Z) and the second direction (Y); the second water outlet connector 22 is an L-shaped tee connector with openings in the third direction (Z) and the second direction (Y); the opposite ends of the first water outlet connector 22 are respectively connected to one end of the first water inlet pipe 21 and one end of the second water inlet pipe 24; the opening of the second water outlet connector 23 in the third direction (Z) is connected to one end of the second water inlet pipe 24; the openings of the first water outlet connector 22 and the second water outlet connector 23 in the second direction (Y) are used to connect the two liquid cooling plates.

[0074] Specifically, the first water outlet connector 22 is a T-shaped tee connector with openings at both ends in the third direction (Z) and the second direction (Y). The openings at both ends of the tee connector in the third direction (Z) are respectively connected to the first water inlet pipe 21 and the second water inlet pipe 24. The second water inlet pipe 24 is a straight pipe in the third direction (Z), allowing the coolant to flow in the third direction (Z) to the second water outlet connector 23. The second water outlet connector 23 is an L-shaped two-way connector with openings in the third direction (Z) and the second direction (Y), and its opening in the third direction (Z) is connected to the second water inlet pipe 24. The openings of the first water outlet connector 22 and the second water outlet connector 23 in the second direction (Y) are respectively connected to the two liquid cooling plates, enabling the two liquid cooling plates to be connected in parallel and supplying coolant to the two liquid cooling plates.

[0075] By setting the first water outlet connector 22 and the second water outlet connector 23 as connectors that open along the second direction (Y) and the third direction (Z), the coolant flowing along the third direction (Z) after passing through the U-shaped structure of the first water inlet pipe (21) can be converted to flow along the second direction (Y), and the coolant in the first water inlet pipe 21 can be diverted to the two liquid cooling plates through the two water outlet connectors and the second water inlet pipe 24, so as to realize the parallel connection of the two liquid cooling plates.

[0076] Optional, refer to Figures 1 to 4 There are two return water connectors 35, namely the first return water connector 32 and the second return water connector 33; the first return water connector 32 is a T-shaped tee connector with openings at both ends in the third direction Z and in the second direction Y; the second return water connector 32 is an L-shaped tee connector with openings in the third direction Z and in the second direction Y; the opposite ends of the first return water connector 32 are connected to one end of the first return water pipe 31 and one end of the second return water pipe 34, respectively; the opening of the second return water connector 33 in the third direction Z is connected to one end of the second return water pipe 34; the openings of the first return water connector 32 and the second return water connector 33 in the second direction Y are used to connect the two liquid cooling plates.

[0077] Specifically, the first return water connector 32 is a T-shaped tee connector with openings at both ends in the third direction (Z) and the second direction (Y). The openings at both ends of the tee connector in the third direction (Z) are respectively connected to the first return water pipe 31 and the second return water pipe 34. The second return water pipe 34 is a straight pipe in the third direction (Z). The second return water connector 33 is an L-shaped two-way connector with openings in the third direction (Z) and the second direction (Y). Its opening in the third direction (Z) is connected to the second return water pipe 34. The openings of the first return water connector 32 and the second return water connector 33 in the second direction (Y) are respectively connected to two liquid cooling plates, connecting the two liquid cooling plates in parallel. This allows the coolant in the liquid cooling plate connected to the second return water connector 33 to flow into the second return water pipe 34 in the second direction (Y) and then into the first return water pipe 31 in the third direction (Z). At the same time, the coolant in the liquid cooling plate connected to the first return water connector 32 flows into the first return water pipe 31 through the first return water connector 32, thus simultaneously recovering the coolant from both liquid cooling plates.

[0078] By configuring the first return water connector 32 and the second return water connector 33 as connectors that open along the second direction (Y) and the third direction (Z), the coolant flowing into the liquid cooling plate along the second direction (Y) can be converted to flow along the third direction (Z), and the coolant of the two liquid cooling plates can be returned to the first return water pipe 31 through the two return water connectors and the second return water pipe 34. At the same time, the coolant in the two liquid cooling plates is returned, thereby improving the coolant return efficiency.

[0079] Optional, refer to Figure 3 A sealing ring 18 is provided on the outer periphery of the side where the water inlet 11 of the through-box connector body 13 is located.

[0080] Specifically, the sealing ring 18 is located at the connection between the through-box connector body 13 and the mounting box, and is arranged around the periphery of the through-box connector body 13. The sealing ring 18 can be made of silicone rubber or fluororubber, etc. Silicone rubber is a suitable material because it does not harden or become brittle in low-temperature environments, maintaining good elasticity and ensuring a good seal. Fluororubber can also be used, as it has good corrosion resistance. Fluororubber sealing rings can form a reliable barrier, ensuring the seal at the through-box connector, preventing seal failure due to corrosion, and extending the service life of the entire liquid cooling system. This application does not limit the specific material of the sealing ring 18.

[0081] A sealing ring 18 is installed around the periphery of the through-box connector body 13 to prevent coolant leakage in the event of a ruptured liquid cooling water pipe, and to prevent coolant from contacting other components and causing short circuits or other malfunctions. Adding a sealing ring 18 at the connection between the through-box connector body 13 and the mounting enclosure also enhances system stability. Using a soft sealing ring made of materials such as silicone rubber can reduce vibration displacement between the through-box connector body 13 and the mounting enclosure, thus enhancing system stability. Furthermore, adding a sealing ring effectively prevents impurities from entering the system, protecting liquid cooling pipes and other components from wear and tear, and extending the service life of the equipment.

[0082] Optional, refer to Figures 1 to 4 The box-through connector assembly 10 is processed into a single piece using an integrated injection molding process.

[0083] Specifically, when the integrated injection molding of the through-box connector assembly 10 is performed, the connection between the inlet 11 and the first adapter 16, as well as the outlet 12 and the second adapter 17, is made. In some embodiments, when the integrated injection molding of the through-box connector assembly 10 is performed, three sets of reserved nuts 14 need to be provided. In other embodiments, the temperature sensor 15 needs to be in direct contact with the coolant; therefore, when the integrated injection molding of the through-box connector assembly 10 is performed, a small hole needs to be provided for the probe end of the temperature sensor 15 to pass through. In other embodiments, when the integrated injection molding of the through-box connector assembly 10 is performed, material is selectively removed from the low-stress area on the side where the through-box connector body 13 connects to the inlet 11 to form a non-uniform hollow structure 19. This hollow structure 19 is symmetrically arranged along the central axis of the through-box connector body 13 in the second direction (Y) and the third direction (Z), which can not only effectively reduce the weight of the component without affecting the overall strength of the component, but also save raw materials and reduce production costs.

[0084] By using a one-piece injection molding process to process the through-box connector assembly 10 into a single unit, gaps and looseness that may occur with traditional connection methods are eliminated. This ensures a tight connection between the connector and the housing, better enabling it to withstand external impacts during transportation, installation, and use. It significantly reduces the risk of component separation and damage, ensuring the overall reliability of the equipment. Secondly, eliminating cumbersome assembly processes and using injection molding in one step greatly shortens the production cycle, while reducing manual operations, lowering labor costs and the probability of errors, providing strong support for large-scale, high-efficiency production. Furthermore, using one-piece injection molding reduces the weight of the through-box connector assembly 10, thereby reducing the weight of the entire liquid-cooled distribution integration device.

[0085] This application also provides a power battery system, including a housing and the liquid cooling shunt integrated device described above. The through-housing connector assembly 10 is mounted on the housing, and the water inlet pipe assembly 20 and the water return pipe assembly 30 are located inside the housing. This system can adapt to the limited space in a power battery system, improve cooling efficiency, and reduce the temperature difference between multiple battery modules when two liquid cooling plates cool multiple battery modules.

[0086] In some embodiments, the housing is provided with mounting holes corresponding to the reserved nuts 14 on the through-box connector body 13. A screw is passed through the mounting holes of the housing along the second direction (Y) and screwed into the reserved nuts 14 to realize the installation of the through-box connector assembly 10 and the housing. In other embodiments, small holes are pre-set at corresponding positions on the housing and the through-box connector assembly 10. A screw is passed through the pre-set small holes of the housing and the through-box connector assembly 10 along the second direction (Y), and a nut is added inside the housing to cooperate with the screw to tighten, thus completing the installation of the through-box connector assembly 10 and the housing.

[0087] It should be understood that the phrase "some embodiments" throughout the specification means that a specific feature, structure, or characteristic related to an embodiment is included in at least one embodiment of this application. Therefore, "some embodiments" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0088] Finally, it should be noted that the above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A liquid-cooled split integrated device, characterized in that, The liquid cooling shunt integrated device comprises a through-box joint assembly (10), a water inlet pipe assembly (20), and a water return pipe assembly (30); The through-box joint assembly (10) comprises a water inlet (11), a water outlet (12), a first adapter (16), a second adapter (17), and a through-box joint body (13); The water inlet (11) and the water outlet (12) are arranged on one side of the through-box joint body (13) along a second direction (Y), and the first adapter (16) and the second adapter (17) are arranged on the other side of the through-box joint body (13) along a third direction (Z); The water inlet (11) is in communication with the first adapter (16) internally, and one end of the water inlet pipe assembly (20) is connected with the first adapter (16); The water outlet (12) is in communication with the second adapter (17) internally, and one end of the water return pipe assembly (30) is connected with the second adapter (17); The other end of the water inlet pipe assembly (20) is connected with at least two water outlet joints (25), and the other end of the water return pipe assembly (30) is connected with at least two water return joints (35); The water outlet joint (25) and the water return joint (35) are used for connecting a liquid cooling plate, and the water inlet pipe assembly (20) and the water return pipe assembly (30) are both arranged in a U-shaped structure.

2. The liquid-cooled split-integrated device of claim 1, wherein, The liquid cooling shunt integrated device further comprises a temperature sensor (15); The temperature sensor (15) is fixedly connected at the connection position of the through-box joint body (13) and the first adapter (16).

3. The liquid-cooled split-integrated device of claim 1, wherein, The through-box joint body (13) is provided with three groups of pre-buried nuts (14) side by side along a first direction (X), and each group of the pre-buried nuts (14) comprises at least two nuts; The three groups of pre-buried nuts (14) are arranged in a spaced manner between the first adapter (16) and the second adapter (17) and protrude from the through-box joint body (13) along the second direction (Y).

4. The liquid-cooled split-integrated device of claim 1, wherein, The water inlet pipe assembly (20) comprises a first water inlet pipe (21) and at least one second water inlet pipe (24); The first water inlet pipe (21) is in a U-shaped structure, one end of the first water inlet pipe (21) is connected with the first adapter (16), and the other end of the first water inlet pipe (21) is connected with one water outlet joint (25); Two ends of the second water inlet pipe (24) are respectively connected with two water outlet joints (25); The first water inlet pipe (21) is a polyurethane pipe, and the second water inlet pipe (24) is a plastic corrugated pipe.

5. The liquid-cooled split-integrated device of claim 1, wherein, The water return pipe assembly (30) comprises a first water return pipe (31) and at least one second water return pipe (34); The first water return pipe (31) is in a U-shaped structure, one end of the first water return pipe (31) is connected with the second adapter (17), and the other end of the first water return pipe (31) is connected with one water return joint (35); Two ends of the second water return pipe (34) are respectively connected with two water return joints (35); The first water return pipe (31) is a polyurethane pipe, and the second water return pipe (34) is a plastic corrugated pipe.

6. The liquid-cooled split-integrated device of claim 4, wherein, The number of the water outlet joints (25) is two, which are a first water outlet joint (22) and a second water outlet joint (23). The first water outlet joint (22) is a T-shaped tee joint with openings along the third direction (Z) and the second direction (Y); the second water outlet joint (23) is an L-shaped two-way joint with openings along the third direction (Z) and the second direction (Y). The opposite ends of the first water outlet joint (22) are connected with one end of the first water inlet pipe (21) and one end of the second water inlet pipe (24) respectively; the opening of the second water outlet joint (23) along the third direction (Z) is connected with one end of the second water inlet pipe (24). The openings of the first water outlet joint (22) and the second water outlet joint (23) along the second direction (Y) are used for connecting two liquid cooling plates.

7. The liquid-cooled split-integrated device of claim 5, wherein, The number of the water return joints (35) is two, which are a first water return joint (32) and a second water return joint (33). The first water return joint (32) is a T-shaped tee joint with openings along the third direction (Z) and the second direction (Y); the second water return joint (33) is an L-shaped two-way joint with openings along the third direction (Z) and the second direction (Y). The opposite ends of the first water return joint (32) are connected with one end of the first water return pipe (31) and one end of the second water return pipe (34) respectively; the opening of the second water return joint (33) along the third direction (Z) is connected with one end of the second water return pipe (34). The openings of the first water return joint (32) and the second water return joint (33) along the second direction (Y) are used for connecting two liquid cooling plates.

8. The liquid-cooled split-integrated device of claim 1, wherein, The tank-penetrating joint body (13) is provided with a sealing ring (18) on the periphery of the side where the water inlet (11) is located.

9. The liquid-cooled split-integrated device of any of claims 1-8, wherein, The tank-penetrating joint assembly (10) is processed as an integral piece by an integral injection molding process.

10. A power battery system, characterized in that, The liquid cooling shunt integrated device comprises a tank and any one of the liquid cooling shunt integrated devices in claims 1-9, the tank-penetrating joint assembly (10) is installed on the tank, and the water inlet pipe assembly (20) and the water return pipe assembly (30) are located in the tank.

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