A mounting box, a battery pack, and a vehicle

Abstract

The application discloses a mounting box, a battery pack and a vehicle, and solves the technical problems of heat exchange delay and poor uniformity caused by complex temperature conduction chain in the prior art. The mounting box comprises a box body, a connecting pipeline and at least one liquid storage pipeline. The box body has a containing cavity for mounting a heat generating component, and a liquid inlet and a liquid outlet which are in communication with the containing cavity. The at least one liquid storage pipeline is arranged on the bottom plate of the box body, a plurality of liquid injection holes are arranged on the liquid storage pipeline in an axial direction at intervals, and the liquid storage pipeline is in communication with the containing cavity through the plurality of liquid injection holes. The connecting pipeline is in communication with the liquid inlet and the at least one liquid storage pipeline. By integrating the liquid storage pipeline required for cooling liquid delivery on the bottom plate of the box body, the types of parts are reduced, and the strength of the lower box body is improved to a certain extent. The assembly difficulty is low, the connecting port is reduced, the sealing performance is improved, the quality management risk is reduced, and the insulation and power safety problems caused by sealing leakage are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle battery, in particular to a mounting box, a battery pack and a vehicle. BACKGROUND

[0002] The internal cooling assembly of the battery pack in the prior art is generally composed of a liquid cooling plate 9 and a heat-conducting pad 10, as shown in the figure, the water pump is driven by the BMS to drive the cooling liquid to flow inside the liquid cooling plate 9, thereby taking away the heat of the module. However, the sealing requirement of the harmonica tube heat dissipation body and the peripheral liquid collecting tube of the liquid cooling plate 9 is high, and the parts are many, the size and assembly control are difficult, which seriously occupies the limited space in the battery pack and increases the weight. Figure 1

[0003] At the same time, the battery pack in the prior art has poor cooling effect and poor uniformity, and it is difficult to achieve precise temperature control, which leads to increasing consistency of the life of the battery cell, thereby affecting the service life of the entire battery pack. SUMMARY

[0004] To solve the above technical problems, the present application provides a mounting box, a battery pack and a vehicle, which solves the technical problems of delayed heat exchange and poor uniformity caused by complex temperature conduction chain in the prior art.

[0005] The scheme for achieving the technical purpose of the present application is a mounting box, comprising:

[0006] a box body having a containing cavity for mounting a heat generating component, and a liquid inlet and a liquid outlet in communication with the containing cavity;

[0007] at least one liquid storage pipeline arranged on the bottom plate of the box body, a plurality of liquid injection holes being arranged on the liquid storage pipeline in an axial direction, the liquid storage pipeline being in communication with the containing cavity through the plurality of liquid injection holes;

[0008] a connecting pipeline connecting the liquid inlet and the at least one liquid storage pipeline.

[0009] Further, the liquid storage pipeline is a circular tube;

[0010] Alternatively, the liquid storage pipeline comprises a first arc-shaped tube piece and a second arc-shaped tube piece fixedly connected, the first arc-shaped tube piece and the second arc-shaped tube piece jointly form a closed pipeline structure, the first arc-shaped tube piece is embedded in the bottom plate of the box body; the second arc-shaped tube piece is a tube piece bent towards the bottom plate, and the second arc-shaped tube piece is located in the containing cavity.

[0011] Further, the second arc-shaped tube piece is provided with a lapping edge on both sides for lapping the upper surface of the bottom plate, and the lapping edge extends out of the first arc-shaped tube piece.

[0012] ​Further, the bottom plate is a hollow structure, and a plurality of partitions are arranged in the bottom plate, which divide the inner cavity of the bottom plate into a plurality of inner cavities.

[0013] The number of the partitions is not less than the number of the liquid storage pipes, and the liquid storage pipes are selectively arranged on at least one of the partitions along the axial direction of the liquid storage pipes.

[0014] Further, the box body comprises an upper box body and a lower box body which are fixedly connected.

[0015] The bottom plate is arranged on the lower box body, the number of the liquid storage pipes is more than two, and the more than two liquid storage pipes are arranged at intervals along the length direction and / or the width direction of the bottom plate.

[0016] Further, the connecting pipe comprises a main pipe and a plurality of branch pipes which are in communication with the liquid storage pipes, the main pipe is in communication with the liquid inlet, and the branch pipes are in one-to-one communication with the liquid storage pipes.

[0017] Further, the upper surface of the bottom plate is provided with a water absorption layer.

[0018] Based on the same inventive concept, the application further provides a battery pack comprising:

[0019] The mounting box described above;

[0020] At least one module is arranged in the accommodating cavity.

[0021] The plurality of liquid injection holes of at least one of the liquid storage pipes are directed towards the module.

[0022] Based on the same inventive concept, the application further provides a vehicle comprising:

[0023] The battery pack described above;

[0024] A circulating power assembly comprising a power pump, a heat exchanger, and a circulating pipe which is in series communication with the power pump, the heat exchanger, the liquid inlet and the liquid outlet, so that the medium circulates and flows in the liquid storage pipe, the mounting cavity and outside the battery pack.

[0025] Further, the heat exchanger has a plurality of flow channel tubes which are arranged in parallel, and the outer surfaces of the flow channel tubes are provided with a plurality of heat dissipation fins.

[0026] From the above technical scheme can be known, the installation box provided by the application, including box, connecting pipeline and at least one liquid storage pipeline: wherein: the box has the containing cavity for installing the heat generating component, and the liquid inlet and the liquid outlet communicated with the containing cavity;At least one liquid storage pipeline is arranged on the bottom plate of the box, a plurality of liquid injection holes are arranged on the liquid storage pipeline in the axial direction, and the liquid storage pipeline is communicated with the containing cavity through the plurality of liquid injection holes;The connecting pipeline communicates the liquid inlet and the at least one liquid storage pipeline, so that when the heat generating component in the box needs to be cooled or heated, the heat exchange medium flows in the connecting pipeline, the liquid storage pipeline and the containing cavity through the liquid inlet, and finally flows out through the liquid outlet, forming flow heat exchange and dynamic circulation, realizing immersion type direct contact heat exchange of the heat generating component, heat exchange is timely and uniform, the space occupied by pipeline distribution can be effectively reduced, the temperature conduction chain is simplified, which is conducive to realizing accurate temperature control, rapid and uniform heat exchange.In addition, by integrating the liquid storage pipeline required for cooling infusion on the bottom plate of the box, the types of parts are reduced, and the strength of the lower box can be improved to a certain extent;Low assembly difficulty, reduce the connecting port to improve the sealing performance, reduce the quality management risk, avoid the insulation and electrical safety problems caused by sealing leakage.

[0027] The battery pack and the vehicle provided by the application, the battery module is the heat generating component arranged in the containing cavity, by directing the plurality of liquid injection holes of at least one liquid storage pipeline towards the module, so that the heat exchange medium can directly contact the module after being sprayed out through the liquid injection hole, realizing rapid cooling of the module, the immersion type heat exchange mode of direct contact has relatively high creative value and strong implementability.When the above installation box is applied to the battery pack and the vehicle, it also has the technical effects of rapid and uniform heat exchange, thereby being conducive to ensuring the consistency of the performance of the battery cell, avoiding the great difference in the service life of the battery cell caused by uneven cooling, realizing the improvement of the service life of the battery system, and having a very great positive effect on improving the heat exchange (cooling or heating) efficiency, the safety of the battery pack, the energy density of the battery pack and the service life of the battery cell. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 The structure diagram of the cooling assembly and the battery pack in the prior art;

[0029] Figure 2 The internal schematic diagram of the installation box provided by embodiment 1 of the application and the assembly schematic diagram with the module;

[0030] Figure 3 The cross-sectional schematic diagram of the installation box in Figure 2 along the width direction;

[0031] Figure 4 The cross-sectional schematic diagram of the installation box in Figure 2 along the length direction;

[0032] Figure 5 for Figure 4 A magnified view of a portion of the image;

[0033] Figure 6 This is a schematic diagram of the connection between the battery pack and the circulation assembly in a vehicle provided in Embodiment 3 of the present invention;

[0034] Figure 7 for Figure 6 A schematic diagram of the heat exchanger in the diagram.

[0035] Explanation of reference numerals in the attached drawings: 1-Mounting box, 11-Base plate, 12-Baffle plate, 13-Liquid inlet, 14-Liquid outlet, 15-Inner cavity; 2-Liquid storage pipe, 21-Spray hole, 22-First arc-shaped tube, 23-Second arc-shaped tube, 24-Overlapping edge; 3-Connecting pipe; 4-Water absorption layer; 5-Module, 51-Support plate; 6-Power pump; 7-Heat exchanger, 71-Flow channel tube, 72-Heat dissipation fins; 8-Circulation pipe; 9-Liquid cooling plate; 10-Thermal conductive pad. Detailed Implementation

[0036] To enable those skilled in the art to better understand this application, the technical solution of this application will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] In existing technologies, to achieve heat transfer, such as cooling or heating, of components inside the enclosure, the common method is to directly install a liquid cooling plate 9 inside the enclosure, such as... Figure 1 As shown, the basic components consist of a harmonica tube heat dissipation body and surrounding liquid collection pipes. The main connection methods are vacuum brazing and various sealing joints to ensure the airtightness of the entire cooling system. However, there are technical problems such as occupying limited internal space of the cabinet and increasing weight. Moreover, the cooling plate has many components, making size and assembly control difficult, and the cooling effect is also poor.

[0038] To address the aforementioned problems in the prior art, this invention provides a mounting box 1, a battery pack, and a vehicle, integrating the cooling structure into the mounting box 1 and changing the heat exchange method to ensure timely and uniform heat exchange. The technical content of this invention will be described in detail below through three specific embodiments:

[0039] Example 1

[0040] like Figures 2-5As shown, this embodiment provides an installation box 1, including a box body, a connecting pipe 3, and at least one liquid storage pipe 2. The box body has a cavity for installing heating elements, and an inlet 13 and an outlet 14 communicating with the cavity. At least one liquid storage pipe 2 is disposed on the bottom plate 11 of the box body, and multiple spray holes 21 are spaced axially along the liquid storage pipe 2. The liquid storage pipe 2 communicates with the cavity through the multiple spray holes 21. The connecting pipe 3 connects the inlet 13 to the at least one liquid storage pipe 2, so that when cooling or heating of the heating elements inside the box is required, the heat exchange medium flows through the inlet 13 within the connecting pipe 3, the liquid storage pipe 2, and the cavity, and finally flows out through the outlet 14, forming a flow heat exchange and dynamic circulation. This achieves direct contact immersion heat exchange with the heating elements, resulting in timely and uniform heat exchange. The space occupied by the pipe distribution is effectively reduced, simplifying the temperature conduction chain and facilitating precise temperature control and rapid and uniform heat exchange. In addition, by integrating the liquid storage pipe 2 required for cooling liquid delivery into the bottom plate 11 of the tank, the number of parts is reduced, and the strength of the lower tank can be improved to a certain extent. The assembly difficulty is low, the connection ports are reduced, thereby improving the sealing performance, reducing the risk of quality management, and avoiding insulation and electrical safety problems caused by seal leakage.

[0041] The present invention does not specifically limit the cross-sectional shape of the liquid storage pipe 2, which can be circular, elliptical, square, etc., or even irregular. However, in order to make the heat exchange medium flow more smoothly in the containment cavity, preferably, the top surface of the liquid storage pipe 2 has a slope facing the bottom plate 11, that is, the top of the liquid storage pipe 2 is not parallel to the bottom plate 11.

[0042] In a preferred embodiment, the liquid storage pipe 2 is a circular pipe. Alternatively, the liquid storage pipe 2 includes a first arc-shaped pipe segment 22 and a second arc-shaped pipe segment 23 fixedly connected together. The first arc-shaped pipe segment 22 and the second arc-shaped pipe segment 23 together form a closed pipe structure. The first arc-shaped pipe segment 22 is embedded in the bottom plate 11 of the housing. The second arc-shaped pipe segment 23 is a pipe segment that bends towards the bottom plate 11 and is located in the receiving cavity. That is, the upper surface of the liquid storage pipe 2 is raised and higher than the surface of the bottom plate 11. On the one hand, this reduces the distance between the liquid outlet and the bottom surface of the heating element, so that the coolant can directly contact the heating element after being sprayed from the hole, and cool down quickly. On the other hand, the upper surface of the liquid cooling pipe is arc-shaped, which facilitates the rapid flow of coolant to both sides along the arc-shaped surface, increases the flow rate, and enhances the cooling effect.

[0043] It should be noted that this refers to the structural design of a single liquid storage pipe 2. When multiple liquid storage pipes 2 are involved, the structures of all liquid storage pipes 2 can be the same or different, or partially the same. For example, some can be circular pipes and some can be pipe structures formed by the first arc-shaped pipe segment 22 and the second arc-shaped pipe segment 23.

[0044] In order to enhance the flow channel guidance and ensure the conveying speed, in this embodiment, the arc angle of the first arc-shaped tube 22 is greater than 180°, and both ends of the arc of the first arc-shaped tube 22 are higher than the upper surface of the base plate 11, so that the second arc-shaped tube 23 is completely located on the upper surface of the base plate 11.

[0045] In this embodiment, the cross-section of the liquid storage pipe 2 is an axisymmetric structure, and the arc apex of the first arc-shaped pipe segment 22 and the arc apex of the second arc-shaped pipe segment 23 are both located at the center of symmetry.

[0046] This embodiment does not specifically limit the location and angle of the spray hole 21, and can be designed according to requirements. As a preferred embodiment, the spray hole 21 penetrates radially along the second arc-shaped tube 23.

[0047] In order to facilitate the installation of the liquid storage pipe 2 on the base plate 11, and at the same time ensure the connection strength and the overall strength of the mounting box 1, in this embodiment, the two sides of the second arc-shaped tube 23 are provided with overlapping edges 24 for overlapping the upper surface of the base plate 11. The overlapping edges 24 extend outward from the first arc-shaped tube 22, that is, after the arc surface of the second arc-shaped tube 23 is connected to the two ends of the arc of the first arc-shaped tube 22, it continues to extend outward to form overlapping edges 24 for connection and fixation.

[0048] To reduce the weight of the mounting box 1 while improving its strength, in this embodiment, the bottom plate 11 is a hollow structure with multiple partitions 12 inside, dividing the inner cavity of the bottom plate 11 into multiple inner cavities 15. The number of partitions 12 is not less than the number of liquid storage pipes 2; and along the axial direction of the liquid storage pipes 2, the liquid storage pipes 2 can be selectively disposed on at least one partition 12. In this embodiment, the second arc-shaped tube 23 is partially recessed into the inner cavity 15 of the bottom plate 11 and supported by the partitions 12, avoiding the concentration of the weight of the liquid storage pipes 2 at the connection between the liquid storage pipes 2 and the bottom plate 11, so that the force on the bottom plate 11 is more dispersed and evenly distributed, ensuring the connection strength at the connection point.

[0049] In order to achieve a seal and prevent the heat exchange medium from flowing into the inner cavity 15, in this embodiment, the liquid storage pipe 2 is sealed to the bottom plate 11 on all four sides. This can be achieved with the help of a sealing element. Preferably, in this embodiment, the overlapping edge 24 of the second arc-shaped tube 23 is welded to the upper surface of the bottom plate 11, and the two shaft ends of the liquid storage pipe 2 are also welded to the bottom plate 11.

[0050] The present invention does not specifically limit the support method of the partition 12 and the liquid storage pipe 2. Multiple partitions 12 can be spaced apart along the axial direction of the liquid storage pipe 2, with or without intersections, and are supported by the portion of the liquid storage pipe 2 spanned by the partition 12. As a preferred embodiment, in this embodiment, at least some of the partitions 12 are arranged parallel to the axial direction of the liquid storage pipe 2, with each liquid storage pipe 2 arranged parallel to one partition 12, and the generatrix of the bottom vertex of the second arc-shaped tube segment 23 completely resting on the partition 12, and supported by direct contact with the partition 12.

[0051] Similar to existing technologies, in order to facilitate assembly and disassembly, the box provided in this embodiment includes an upper box and a lower box that are fixedly connected; the bottom plate 11 is located on the lower box. Here, the bottom plate 11 can be part of the structure of the lower box itself, or it can be a plate independently set on the lower box. This invention does not make a specific limitation. In order to simplify the structure, preferably, in this embodiment, the box part where the bottom surface of the lower box is located constitutes the bottom plate 11, that is, the lower box itself in this embodiment is a hollow structure.

[0052] To ensure cooling rate and cooling effect, in this embodiment, there are two or more liquid storage pipes 2, and the two or more liquid storage pipes 2 are spaced apart along the length and / or width of the base plate 11. It is only necessary to ensure that there is no intersection between any two liquid storage pipes 2. For example, all liquid storage pipes 2 are spaced apart along the length of the base plate 11, or all liquid storage pipes 2 are spaced apart along the width of the base plate 11, or some liquid storage pipes 2 are spaced apart along the length of the base plate 11 and some liquid storage pipes 2 are spaced apart along the width of the base plate 11, and the liquid storage pipes 2 with the two different arrangement methods do not have intersecting parts.

[0053] In order to connect the oil inlet and each liquid storage pipe 2, in this embodiment, the connecting pipe 3 includes a main pipe and a number of branch pipes equal to the number of liquid storage pipes 2. The main pipe is connected to the liquid inlet 13, and the branch pipes are connected to each of the liquid storage pipes 2.

[0054] To accommodate the shape of the cavity, the mounting box 1 provided by this invention has a bent branch pipe with a first part parallel to the base plate 11 and a second part perpendicular to the base plate 11. The first and second parts are connected. The first part is used to connect to the liquid storage pipe 2, and the second part is used to connect to the main pipe. This embodiment does not specifically limit the arrangement of the branch pipe. The first part may have a gap with the base plate 11. As an example embodiment, the first part is partially recessed on the base plate 11. Similarly, to prevent the heat exchange medium from entering the inner cavity 15, the first part is welded to the base plate 11 to achieve a sealed connection.

[0055] To prevent a large amount of coolant from splashing during battery pack vibration, in this embodiment, the upper surface of the base plate 11 is provided with a water-absorbing layer 4 to separate the heating component from the base plate 11 and the liquid storage pipe 2 installed on the floor.

[0056] This embodiment does not specifically limit the structure and material of the absorbent layer 4. As a preferred embodiment, the absorbent layer 4 is made of PU foam.

[0057] The mounting groove of this invention achieves heat exchange through immersion direct cooling, which has high innovative value and strong feasibility. It plays a significant positive role in improving cooling efficiency and extending the service life of heating components. It enables direct contact heat exchange through immersion, resulting in timely and uniform heat exchange. The space occupied by pipe distribution is effectively reduced, simplifying the temperature conduction chain and facilitating precise temperature control and rapid, uniform heat exchange. Furthermore, by integrating the liquid storage pipe 2 required for cooling fluid delivery into the bottom plate 11 of the housing, not only are cooling / heating functions achieved and the number of components reduced, but the strength of the lower housing is also improved to a certain extent. Assembly is simple, reducing connection points and thus improving sealing performance, lowering quality management risks, and avoiding insulation and electrical safety problems caused by seal leakage.

[0058] Example 2

[0059] Based on the same inventive concept, this embodiment also provides a battery pack, including the mounting box 1 provided in Embodiment 1 and at least one module 5 disposed within the receiving cavity; wherein, at least one liquid storage pipe 2 has multiple spray holes 21 facing the module 5, so that the heat exchange medium can directly contact the module 5 after being sprayed out through the spray holes 21, thereby achieving rapid cooling of the module 5. When the mounting box 1 in Embodiment 1 is applied to the battery pack, it also has the technical effect of rapid and uniform heat exchange, which is conducive to ensuring the consistency of cell performance, avoiding huge differences in cell life due to uneven cooling, and improving the life of the battery system. It has a very positive effect on improving heat exchange (cooling or heating) efficiency, improving battery pack safety, improving battery pack energy density, and improving cell life.

[0060] In order to ensure that the heat exchange medium sprayed from the oil injection hole 21 directly contacts the bottom surface of the module 5, in this embodiment, support plates 51 are provided at both ends of the module 5 along its length to stably install the module 5 into the housing. At the same time, there is a gap between the bottom surface of the module 5 and the upper surface of the base plate 11 and the top surface of the liquid storage pipe 2, and at least part of the liquid storage pipe 2 extends into the space between the module 5 and the base plate 11.

[0061] In this embodiment, the length direction of module 5 is the same as the length direction of the lower housing. The present invention does not impose specific limitations on the placement and assembly of module 5; they can be arranged side-by-side, parallel, or in multiple rows and columns. For example, in this embodiment, two columns of cells are arranged along the length direction of module 5, with each column containing six cells along the width direction of module 5.

[0062] The battery pack provided in this embodiment reduces the number of components by integrating the liquid storage pipe 2 required for cooling liquid delivery into the bottom plate 11 of the casing, and also improves the strength of the lower casing to a certain extent. It has low assembly difficulty, reduces connection points, thus improving sealing performance, reducing quality management risks, and avoiding insulation and electrical safety problems caused by seal leakage. It solves the technical problems in the prior art where the liquid cooling plate 9 occupies limited space within the battery pack, increases weight, and has many parts, leading to greater difficulty in size and assembly control.

[0063] In existing technologies, the liquid cooling plate 9 and thermal pad between the battery cell and the coolant affect the thermal conductivity, and the temperature difference before and after the cooling pipe is large. Although this can be improved through self-circulation, the long temperature transfer chain makes precise temperature control difficult, inevitably leading to greater inconsistency in battery cell lifespan and thus affecting the overall battery pack lifespan. The battery pack provided in this embodiment has a heat exchange medium flowing through the inlet 13 in the connecting pipe 3, the storage pipe 2, and the receiving cavity, and finally flowing out through the outlet 14, forming a flow heat exchange and dynamic circulation. This achieves direct contact heat exchange by immersion on the heat-generating components, resulting in timely and uniform heat exchange. The space occupied by the pipe distribution is effectively reduced, simplifying the temperature transfer chain and facilitating precise temperature control. The rapid and uniform heat exchange solves the technical problems of untimely and uneven cooling in existing battery packs.

[0064] Example 3

[0065] Based on the same inventive concept, this embodiment also provides a vehicle, including a cyclic power assembly and the battery pack provided in Embodiment 2, such as... Figures 6-7 As shown. The circulating power assembly includes a power pump 6, a heat exchanger 7, and a circulation pipe 8 connecting the power pump 6, heat exchanger 7, inlet 13, and outlet 14 in series, allowing the medium to circulate through the storage pipe 2, the mounting cavity, and outside the battery pack. This embodiment does not modify other structures of the vehicle; other structures not described in detail can be referenced from existing technologies.

[0066] When the aforementioned battery pack is applied to vehicles, it also has the technical effect of rapid and uniform heat exchange, which helps to ensure the consistency of cell performance and avoids huge differences in cell life due to uneven cooling. This improves the life of the battery system and has a very positive effect on improving heat exchange (cooling or heating) efficiency, battery pack safety, battery pack energy density and cell life.

[0067] In order to improve the heat exchange rate, in this embodiment, the heat exchanger 7 has multiple flow channel tubes 71 arranged in parallel. The outer surface of the flow channel tubes 71 is provided with a number of heat dissipation fins 72 to increase the heat exchange area. It can exchange heat with the air conditioning compressor and PTC respectively, and can realize the heating or cooling of the coolant.

[0068] In this embodiment, insulating fluorinated liquid is used as the coolant. Its specific heat capacity is only one-third that of liquid water, which can quickly achieve heat exchange. Moreover, when exchanging heat with the battery cell, it can automatically achieve thermal equilibrium within the system, which also reduces the energy consumption of the water pump to a certain extent.

[0069] The working principle and usage method of the vehicle provided in this embodiment are as follows:

[0070] The vehicle's BMS monitors the cell temperature in real time. When the temperature exceeds a warning threshold (e.g., 45°C), the cooling system is activated, and the system can achieve uniform temperature through coolant self-circulation. Coolant is pumped into the liquid cooling pipes via the circulating pump 7 and enters the battery box through small holes on the upper convex pipe wall, immersing and cooling the module 5. The connection to the heat exchanger 7 allows for the suction of coolant from the lower box, ensuring coolant circulation and heat exchange via the heat exchanger 7.

[0071] When the BMS detects that the cell temperature has reached the upper threshold, the circulating water pump starts and controls the air conditioning compressor to start. The low-temperature circulating working fluid in the compressor enters the heat exchanger 7 to cool the coolant. The battery pack heating process is similar, that is, the BMS controls the PTC three-way valve to open, so that the heated liquid heats the heat exchanger 7, thereby raising the temperature of the coolant in the lower tank, and finally transferring the heat to the cell.

[0072] Through the above embodiments, the present invention has the following beneficial effects or advantages:

[0073] 1) The heat exchange medium flows through the inlet into the connecting pipes, storage pipes, and containment cavity, and finally flows out through the outlet, forming a flow heat exchange and dynamic circulation. This achieves direct contact heat exchange by immersion on the heating components, resulting in timely and uniform heat exchange. The space occupied by the pipe distribution is effectively reduced, simplifying the temperature conduction chain and facilitating precise temperature control and rapid, uniform heat exchange. Furthermore, by integrating the storage pipes required for cooling fluid delivery into the bottom plate of the tank, the number of components is reduced, and the strength of the lower tank is improved to some extent. Assembly is simpler, fewer connection points improve sealing performance, reduce quality management risks, and avoid insulation and electrical safety problems caused by seal leaks.

[0074] 2) When the above-mentioned mounting box is applied to battery packs and vehicles, it also has the technical effect of rapid and uniform heat exchange, which helps to ensure the consistency of cell performance, avoids huge differences in cell life due to uneven cooling, and improves the life of the battery system. It has a very positive effect on improving heat exchange (cooling or heating) efficiency, improving battery pack safety, improving battery pack energy density and cell life.

[0075] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0076] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. An installation box, characterized in that, include: The housing has a cavity for mounting the heating element, and an inlet and an outlet communicating with the cavity. At least one liquid storage pipe is disposed on the bottom plate of the tank body, and a plurality of liquid spray holes are provided on the liquid storage pipe at intervals along the axial direction, and the liquid storage pipe is connected to the receiving cavity through the plurality of liquid spray holes; A connecting pipe is provided to connect the liquid inlet to the at least one liquid storage pipe; The liquid storage pipeline includes a first arc-shaped tube segment and a second arc-shaped tube segment fixedly connected together. The first arc-shaped tube segment and the second arc-shaped tube segment together form a closed pipeline structure. The first arc-shaped tube segment is embedded in the bottom plate of the housing. The second arc-shaped tube segment is a tube segment bent towards the bottom plate and is located in the receiving cavity. The two sides of the second arc-shaped tube segment are provided with overlapping edges for overlapping the upper surface of the bottom plate. The overlapping edges extend out of the first arc-shaped tube segment. The curvature of the second arc-shaped tube segment is smaller than that of the first arc-shaped tube segment. The overlapping edges of the second arc-shaped tube segment are welded to the upper surface of the bottom plate. The two axial ends of the liquid storage pipeline are also welded to the bottom plate. The second arc-shaped tube segment is partially recessed in the inner cavity of the bottom plate and is supported by a partition.

2. The mounting box as described in claim 1, characterized in that, The base plate has a hollow structure, and multiple partitions are provided inside the base plate, which divide the inner cavity of the base plate into multiple inner cavities. The number of baffles is not less than the number of liquid storage pipes; and along the axial direction of the liquid storage pipes, the liquid storage pipes may be selectively disposed on at least one of the baffles.

3. The mounting box as described in claim 1, characterized in that, The enclosure includes an upper enclosure and a lower enclosure that are fixedly connected. The base plate is located on the lower housing, and there are two or more liquid storage pipes, which are spaced apart along the length and / or width of the base plate.

4. The mounting box as described in claim 3, characterized in that, The connecting pipeline includes a main pipe and a number of branch pipes equal to the number of liquid storage pipes. The main pipe is connected to the liquid inlet, and the branch pipes are connected to the liquid storage pipes one by one.

5. The mounting box as described in any one of claims 1-4, characterized in that, The upper surface of the base plate is provided with a water-absorbing layer.

6. A battery pack, characterized in that, include: The mounting box according to any one of claims 1-5; At least one module is disposed within the receiving cavity; In this embodiment, at least one of the plurality of spray holes in the liquid storage pipe faces the module.

7. A vehicle, characterized in that, include: The battery pack as claimed in claim 6; The circulating power assembly includes a power pump, a heat exchanger, and a circulation pipe that connects the power pump, the heat exchanger, the inlet, and the outlet in series, so that the medium circulates outside the storage pipe, the containment cavity, and the battery pack.

8. The vehicle as described in claim 7, characterized in that, The heat exchanger has multiple flow channel tubes arranged in parallel, and the outer surface of the flow channel tubes is provided with several heat dissipation fins.

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