Cooling structure, battery pack, vehicle body assembly and vehicle

Abstract

The utility model discloses a cooling structure, a battery pack, a vehicle body assembly and a vehicle, and relates to the field of cooling and heat dissipation. The cooling structure plate comprises a cooling plate, the cooling plate comprises an upper plate section, a lower plate section and a side plate section, the upper plate section is higher than the lower plate section, the upper plate section and the lower plate section are arranged in the first direction, and the upper plate section and the lower plate section are connected through the side plate section. According to the cooling structure provided by the embodiment of the utility model, the upper plate section and the lower plate section with different heights are formed through the cooling plate and are connected into a whole through the side plate section, so that a cooling target can be cooled by using the upper plate section, the lower plate section and the side plate section, the positions of cooling surfaces are diversified, the cooling area is large, and the cooling effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the cooling heat dissipation field, concretely relates to a cooling structure, battery pack, vehicle body assembly and vehicle. BACKGROUND

[0002] The existing cooling structure when adopting the cooling plate is mostly the planar cooling plate, the planar cooling plate has some deficiencies in use, for example, the cooling target piece can usually only be placed on the top surface or the bottom surface of the cooling plate, the cooling position of the target piece is single, and the cooling effect is limited.

[0003] Therefore, the cooling structure has certain improvement space. SUMMARY

[0004] The utility model discloses at least solve one of the technical problems in the prior art.

[0005] The utility model discloses a battery pack.

[0006] The utility model discloses a vehicle body assembly.

[0007] The utility model discloses a vehicle.

[0008] The cooling structure according to the first aspect of the utility model comprises a cooling plate, wherein the cooling plate comprises an upper plate segment, a lower plate segment and a side plate segment, the upper plate segment is higher than the lower plate segment, the upper plate segment and the lower plate segment are arranged along a first direction, and the upper plate segment and the lower plate segment are connected by the side plate segment.

[0009] The cooling structure according to the utility model embodiment forms the upper plate segment and the lower plate segment of different heights through the cooling plate, the upper plate segment and the lower plate segment are connected by the side plate segment to form a whole, the upper plate segment, the lower plate segment and the side plate segment can cool the cooling target, the cooling surface position is various, the cooling area is large, and the cooling effect is improved.

[0010] The cooling structure according to some embodiments of the utility model, the sum of the number of the upper plate segment, the lower plate segment and the side plate segment is at least three, wherein the upper plate segment and the lower plate segment are alternately arranged along the first direction, and the adjacent upper plate segment and the lower plate segment are connected by the side plate segment.

[0011] According to the cooling structure of some embodiments of the present application, each of the upper plate segments is adapted to be provided with at least one battery cell below, and each of the lower plate segments is adapted to be provided with at least one battery cell above.

[0012] The upper plate segment is adapted to be in heat-conducting connection with the at least one battery cell provided below the upper plate segment, and the lower plate segment is adapted to be in heat-conducting connection with the at least one battery cell provided above the lower plate segment.

[0013] According to the cooling structure of some embodiments of the present application, the battery cell adjacent to the side plate segment is in heat-conducting connection with the side plate segment.

[0014] In some optional embodiments, at least one side of each of the battery cells is in heat-conducting connection with the side plate segment.

[0015] According to the cooling structure of some embodiments of the present application, the battery cell and the cooling plate are connected through heat-conducting glue.

[0016] According to the cooling structure of some embodiments of the present application, the cooling plate is provided with a cooling channel.

[0017] Optionally, the cooling channel is arranged on at least one of the upper plate segment, the lower plate segment and the side plate segment.

[0018] In some optional embodiments, the cooling structure further comprises an inlet and outlet pipe connected to the cooling plate, the inlet and outlet pipe is connected to the cooling plate and is in communication with the cooling channel.

[0019] Optionally, the cooling plate is provided with the inlet and outlet pipe at both ends in the first direction.

[0020] Optionally, the cooling plate is at least two, and the at least two cooling plates are arranged in sequence; the inlet and outlet pipe is in communication with the cooling channel on the at least two cooling plates.

[0021] In some optional embodiments, one end of the cooling plate along the first direction is the side plate segment, the side plate segment is outwardly formed with a flange, and the inlet and outlet pipe is connected to the flange.

[0022] In some optional embodiments, the inlet and outlet pipe is provided with an inlet and outlet on the pipe wall, the cooling channel is provided with a communication port, and the inlet and outlet are in communication with the communication port.

[0023] Optionally, the cooling channels of the upper plate segment, the lower plate segment and the side plate segment of the same cooling plate are in communication.

[0024] According to the battery pack of the second aspect of the present application, the battery pack comprises the cooling structure of the first aspect of the present application.

[0025] In some embodiments, the battery pack comprises: a box body, and the cooling structure is arranged in the box body.

[0026] In some alternative embodiments, the box body comprises: a top cover.

[0027] Optionally, the box body comprises a side frame connected with the top cover. Specifically, the side frame surrounds and is connected to the edge of the top cover.

[0028] Optionally, the box body further comprises a bottom plate structure connected with the side frame away from the top cover.

[0029] Optionally, the top cover, the side frame and the bottom plate structure enclose an electric cell space for arranging the cooling structure. The battery pack further comprises electric cells located in the electric cell space, and at least one of the electric cells is arranged below the upper plate segment and at least one of the electric cells is arranged above the lower plate segment.

[0030] Optionally, the top cover and the side frame are integrally formed.

[0031] Optionally, the top cover and the side frame are integrally formed by die casting.

[0032] Optionally, the bottom plate structure comprises a support sealing plate connected with the side frame.

[0033] Optionally, the support sealing plate is welded to the side frame, and the support sealing plate is in contact with the lower plate segment of the cooling plate and part of the electric cells.

[0034] In some alternative embodiments, the bottom plate structure further comprises a bottom guard plate connected with the side frame, and the bottom guard plate is located away from the side frame from the side of the support sealing plate.

[0035] In some alternative embodiments, the bottom plate structure comprises a first sealing strip clamped between the side frame and the bottom guard plate.

[0036] In some alternative embodiments, the box body further comprises a first adhesive layer arranged between the top cover and the cooling structure.

[0037] Optionally, the box body further comprises a second adhesive layer arranged between the support sealing plate and the cooling structure.

[0038] The vehicle body assembly according to the third aspect of the present application comprises: a battery pack, wherein the battery pack is the battery pack according to the second aspect of the present application.

[0039] In some embodiments, the vehicle body assembly further comprises: a vehicle body frame, wherein the battery pack is mounted on the vehicle body frame.

[0040] In some alternative embodiments, the vehicle body frame comprises: two rocker beams, the two rocker beams being spaced apart; a plurality of cross beams, the plurality of cross beams being connected between the two rocker beams; the battery pack being connected with at least two of the cross beams and the two rocker beams, a top cover of the battery pack being located in a space between the two cross beams and the two rocker beams, and the top cover constituting at least part of a floor in the vehicle body assembly.

[0041] In some alternative embodiments, when the box body is provided with the top cover, the battery pack further comprises: a second sealing strip, the second sealing strip being connected between the top cover and the vehicle body frame.

[0042] The vehicle according to the fourth aspect of the present application comprises the vehicle body assembly according to the third aspect of the present application.

[0043] Additional aspects and advantages of the present application will be given in part in the following description, become apparent from the following description, or be understood through practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0044] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0045] Figure 1 It is an exploded view of the vehicle body assembly in some embodiments of the present application;

[0046] Figure 2 It is a structural schematic view of the cooling structure in some embodiments of the present application;

[0047] Figure 3 It is a perspective view of the cooling plate in some embodiments of the present application;

[0048] Figure 4 It is a schematic view of the arrangement of the cooling plate in some embodiments of the present application;

[0049] Figure 5 It is a sectional view of the cooling plate in some embodiments of the present application;

[0050] Figure 6 It is a schematic view of the installation position of the battery cell in the cooling plate in some embodiments of the present application;

[0051] Figure 7 It is a structural schematic view of the top cover and the side frame in some embodiments of the present application;

[0052] Figure 8This is a schematic diagram showing the position of the supporting sealing plate in the box in some embodiments of this utility model;

[0053] Figure 9 This is an exploded view of the box in some embodiments of this utility model.

[0054] Figure label:

[0055] Body assembly 1000

[0056] Body frame 100, door sill beam 101, crossbeam 102

[0057] Battery pack 200, housing 10, top cover 11, side frame 12, bottom plate structure 13, supporting sealing plate 131, bottom protective plate 132, first sealing strip 133, first adhesive layer 14, second adhesive layer 15, cooling structure 20, cooling plate 22, upper plate section 221, lower plate section 222, side plate section 223, flange 2231, cooling channel 224, inlet and outlet pipe 225, battery cell 30, second sealing strip 40. Detailed Implementation

[0058] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0059] In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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 utility model. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0060] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0061] The following is for reference.Figures 1-9 The cooling structure 20 according to the first aspect of the present application is described.

[0062] According to the cooling structure 20 of some embodiments of the first aspect of the present application, the application field of such a cooling structure 20 is not limited, and therefore the target piece cooled by the cooling structure 20 is also not limited.

[0063] For example, the cooling structure 20 can be applied in a battery pack for cooling the battery cell 30, to ensure that the temperature of the battery cell 30 can be maintained within a safe and stable range during rapid charging and discharging. In the present application, the cooling structure 20 is applied in a battery pack, and the target piece is the battery cell 30, which will not be described below.

[0064] As shown in Figure 1 , the cooling structure 20 comprises a cooling plate 22.

[0065] Optionally, the cooling plate 22 is arranged to extend along a first direction. Generally, the battery pack 200 is a cuboid. Here, the first direction is the width direction of the battery pack 200. In some schemes, the first direction is the length direction of the battery pack 200.

[0066] As shown in the example of Figures 2-4 , the cooling plate 22 extends in a zigzag manner along the first direction (such as the width direction). Such zigzag extension is generally manifested as a series of alternating bends, thereby forming a specific geometric shape on the surface of the cooling plate 22, for example. Of course, the present application is not limited to this, and the cooling plate 22 can also be formed by splicing a plurality of plate segments through welding or the like, which is not limited here.

[0067] Optionally, the geometric shape of the cooling plate 22 can be wavy, or sawtooth-shaped, or regular. Through a series of alternating bends or bends, the opposite sides of the cooling plate 22 (in combination Figure 2 , the upper and lower sides of the cooling plate 22) form recesses and protrusions. This means that the number and shape of recesses on each side are roughly the same, only the positions are opposite.

[0068] Then, by arranging the battery cell 30 in these recesses and protrusions, the contact area between the cooling plate 22 and the battery cell 30 can be maximized.

[0069] In combination Figure 5The cooling plate 22 comprises an upper plate segment 221, a lower plate segment 222, and a side plate segment 223. The upper plate segment 221 is higher than the lower plate segment 222. The upper plate segment 221 and the lower plate segment 222 are arranged along a first direction. The upper plate segment 221 and the lower plate segment 222 are connected by the side plate segment 223. Here, the upper plate segment 221 and the lower plate segment 222 can be arranged along the first direction without overlapping in the vertical projection of the first direction, or can have partial overlapping in the vertical projection of the first direction, which is not limited here.

[0070] The cooling structure 20 can achieve cooling of the cooling target by the upper plate segment 221, the lower plate segment 222, and the side plate segment 223, and has a large cooling area and a high cooling effect.

[0071] In some embodiments, referring to Figure 2 and Figure 3 The upper plate segment 221 and the lower plate segment 222 are both multiple. The multiple upper plate segments 221 and the multiple lower plate segments 222 are arranged along the first direction. The adjacent upper plate segments 221 and the lower plate segments 222 are connected by the side plate segment 223. The lower side of the upper plate segment 221 is suitable for arranging at least one battery cell 30. The upper side of the lower plate segment 222 is suitable for arranging at least one battery cell 30.

[0072] Specifically, the upper plate segment 221 is located at the upper part of the cooling plate 22 and is designed to be higher than the lower plate segment 222. The upper plate segment 221 and the lower plate segment 222 are alternately arranged, so that the cooling plate 22 forms multiple bending areas. When the battery cell 30 is placed in the bending area, the upper surface or the lower surface of the battery cell can be attached to the upper plate segment 221 or the lower plate segment 222, so as to achieve heat exchange.

[0073] The side plate segment 223 is connected between the adjacent upper plate segment 221 and the lower plate segment 222, and serves as a connecting function. They not only enhance the structural strength of the cooling plate 22, but also contact the side surface of the battery cell 30, thereby increasing the cooling and heat dissipation area.

[0074] Generally, the battery cell 30 is in the shape of a cuboid, which can naturally attach to multiple surfaces of the cooling plate 22 in the bending area. This includes one main surface of the upper plate segment 221 or the lower plate segment 222, and the side surface formed by the two side plate segments. Therefore, when the lower side of the upper plate segment 221 and the upper side of the lower plate segment 222 are equipped with a battery cell 30, the three side surfaces of these battery cells 30 can form effective heat conduction contact with the cooling plate 22.

[0075] Compared with the traditional battery pack design, in which the liquid cooling plate is usually only arranged on both sides of the battery pack, the design of the bending area can increase the contact area between the single battery cell and the cooling plate. This increase not only helps to improve the efficiency of heat conduction, but also enables the heat generated by the battery cell during operation to be quickly absorbed and taken away by the cooling plate. This efficient heat dissipation mechanism helps to maintain the battery cell 30 within an appropriate operating temperature range, thereby improving the performance and safety of the battery pack 200.

[0076] The design of the bending area also helps to improve the temperature consistency between the battery cells 30. This is because multiple sides of the battery cell 30 are in contact with the cooling plate 22, and heat can be more evenly distributed throughout the battery pack 200, thereby avoiding the problem of local overheating or uneven temperature.

[0077] The cooling plate 22 arranged in a zigzag manner forms an efficient and compact heat exchange path through continuous and alternating bending areas. At the same time, the installation process of the battery cell 30 and the cooling plate 22 becomes quite intuitive: the battery cell 30 can be directly placed in the bending area of the cooling plate 22, and heat transfer can be achieved through a simple heat-conducting connection. This installation method not only simplifies the production process of the battery pack 200, but also reduces the assembly cost to some extent.

[0078] In yet another embodiment, the side plate segments 223 in the cooling plate 20 are arranged in an extending manner along a second direction, and the upper plate segment 221 and the lower plate segment 222 are connected to both ends of the side plate segments 223 along the second direction. Specifically, the side plate segments 223 are connected between the upper plate segment 221 and the lower plate segment 222, and at this time, the upper plate segment 221, the lower plate segment 222, and the two side plate segments 223 form an installation cavity, and the battery cell 30 is arranged in the installation cavity.

[0079] It is worth noting that the cooling plate 20 in the above embodiment can be formed by an extrusion process.

[0080] According to the cooling structure 20 of some embodiments of the present application, the sum of the number of the upper plate segment 221, the lower plate segment 222, and the side plate segment 223 is at least three, wherein the upper plate segment 221 and the lower plate segment 222 are arranged alternately along the first direction, and the adjacent upper plate segment 221 and lower plate segment 222 are connected by the side plate segment 223.

[0081] In this embodiment, the battery cell 30 is in contact with the upper plate segment 221 or the lower plate segment 222 in the up-down direction, forming a heat-conducting surface.

[0082] In combination with Figures 5-6 , the side surface of part of the battery cell 30 forms a contact surface with the side plate segment 22. This means that the side surface of these battery cells 30 can be in close contact with the side plate segment 223, forming a heat-conducting channel.

[0083] Through the heat-conducting connection between the battery cell 30 and the side plate segment 223, the heat generated by the battery cell 30 can be further dissipated through the side plate segment 223, thereby improving the heat dissipation efficiency of the battery pack 200.

[0084] In addition, the heat-conducting connection between the battery cell 30 and the side plate segment 223 also helps to improve the uniformity of the internal temperature of the battery pack 200. Since the side surface of the battery cell 30 is in contact with the side plate segment 223, the heat can be more evenly distributed among the battery cells 30, avoiding the situation of local overheating.

[0085] Moreover, when the battery cell 30 is out of control, this design of separating the battery cell 30 into multiple groups can also effectively isolate the spread of smoke generated by the battery cell 30 to other battery cells 30. And can quickly dissipate heat, improve the safety of the battery pack 200, and can achieve a larger rate of fast charging.

[0086] In some specific embodiments, only one battery cell 30 is arranged below each upper plate segment 221, and only one battery cell 30 is arranged above each lower plate segment 222. In this way, three surfaces of the battery cell 30 can be in contact with the cooling plate 22, thereby improving the heat conduction efficiency of each battery cell 30 and achieving faster and more uniform heat management.

[0087] In some optional embodiments, the upper plate segment 221 below which the battery cell 30 is arranged is in heat-conducting connection with the above-mentioned battery cell 30. The lower plate segment 222 above which the battery cell 30 is arranged is in heat-conducting connection with the above-mentioned battery cell 30.

[0088] Through the heat-conducting connection, the heat generated by the battery cell 30 can be timely transferred to the cooling plate 22, ensuring the cooling efficiency. The heat-conducting connection mode includes but is not limited to connection through heat-conducting glue or other heat-conducting medium.

[0089] According to the cooling structure 20 of some embodiments of the present application, the battery cell 30 adjacent to the side plate segment 223 is in heat-conducting connection with the side plate segment 223.

[0090] Through the heat-conducting connection between the battery cell 30 and the side plate segment 223, the temperature control of the battery pack 200 during operation is ensured. The battery cell 30 adjacent to the side plate segment 223 is in heat-conducting connection with the side plate segment 223 through the arrangement of heat-conducting medium, and these heat-conducting medium includes but is not limited to silica gel plate, heat-conducting plastic and heat-conducting glue.

[0091] According to the cooling structure 20 of some embodiments of the present application, the battery cell 30 is connected with the cooling plate 22 through heat-conducting glue.

[0092] It is known that the thermal conductive glue is a kind of adhesive with high thermal conductivity. When the thermal conductive glue is filled between the battery cell 30 and the cooling plate 22, it can form a continuous thermal conductive layer between the battery cell 30 and the cooling plate 22. By using the heat conduction performance of the thermal conductive glue, the heat generated by the battery cell 30 can be quickly and uniformly transferred to the cooling plate 22, thereby ensuring that the battery cell 30 can maintain uniform cooling effect in the battery pack 200.

[0093] In addition, the use of the thermal conductive glue also simplifies the connection process between the battery cell 30 and the cooling plate 22 to a certain extent, reduces the production cost, and improves the reliability and stability of the connection.

[0094] According to some embodiments of the cooling structure 20 of the utility model, as shown in Figure 5 , the cooling plate 22 is provided with cooling channels 224.

[0095] Optionally, the cooling channels 224 are arranged on at least one of the upper plate section 221, the lower plate section 222 and the side plate section 223.

[0096] The cooling channels 224 are used for passing the heat conduction medium. When the heat conduction medium flows through these cooling channels 224, it can effectively exchange heat with the battery cell 30, thereby absorbing and taking away the heat generated by the battery cell 30 during operation, and realizing the heat dissipation effect.

[0097] In some optional embodiments, in combination with Figure 4 , Figure 6 , the cooling channels 224 are arranged in all of the upper plate section 221, the lower plate section 222 and the side plate section 223 of the cooling plate 22. This design can ensure efficient coverage of the cooling channels 224 on the cooling plate 22, so that the battery cell 30 can obtain uniform heat dissipation effect in multiple directions.

[0098] Optionally, the cooling structure 20 further comprises inlet and outlet pipes 225 connected to the cooling plate 22 and communicating with the cooling channels 224.

[0099] In this way, the heat conduction medium can enter or exit the cooling plate 22 through the inlet and outlet pipes 225, thereby forming a stable flow on the cooling plate 22, so as to continuously take away the heat generated by the battery cell 30 and maintain the continuous and efficient operation of the cooling system, which helps to prolong the service life of the battery cell 30 and improve the performance of the battery pack 200.

[0100] Optionally, the cooling plate 22 is provided with inlet and outlet pipes 225 at both ends in the first direction, and both ends of the inlet and outlet pipes 225 communicate with the cooling channels 224.

[0101] Specifically, one end of the cooling plate 22 in the first direction is provided with an inlet-outlet pipe 225 as an inlet for introducing the heat conduction medium, and the other end is provided with an inlet-outlet pipe 225 as an outlet for discharging the heat conduction medium that has absorbed heat.

[0102] This layout at both ends can ensure that the flow path of the heat conduction medium in the cooling channel 224 covers the cooling plate 22 as much as possible, thereby ensuring the heat dissipation effect and avoiding local overheating.

[0103] Each inlet-outlet pipe 225 is in communication with the inside of the cooling channel 224, ensuring that the heat conduction medium can smoothly enter and flow through the cooling channel 224.

[0104] According to the cooling structure 20 of some embodiments of the present application, Figure 4 The cooling plate 22 is at least two, and the at least two cooling plates 22 are arranged in sequence.

[0105] By arranging multiple cooling plates 22, the coverage of the object to be cooled can be improved.

[0106] The inlet-outlet pipe 225 is in communication with the cooling channel 224 on the at least two cooling plates 22. In turn, the heat absorbed by the heat conduction medium in the multiple cooling plates 22 is discharged in time.

[0107] According to the cooling structure 20 of some embodiments of the present application, Figure 4 The multiple cooling plates 22 are arranged in sequence along the second direction. Such a layout helps to improve the coverage area of the cooling structure 20 in the length direction of the battery pack 200, ensuring that the heat generated in the battery pack 200 can be evenly and efficiently transmitted.

[0108] Each cooling plate 22 is provided with a cooling channel 224, which is the flow path of the heat conduction medium and is responsible for carrying away the heat generated by the battery cell 30. The inlet-outlet pipe 225 is configured to be in communication with the cooling channel 224 on each cooling plate 22, so that the inlet-outlet pipe 225 can guide the medium that has absorbed heat in the multiple cooling plates 22 out, for subsequent unified heat dissipation treatment.

[0109] According to the cooling structure 20 of some embodiments of the present application, one end of the cooling plate 22 in the first direction is a side plate section 223, and the side plate section 223 is outwardly formed with a flange 2231, and the inlet-outlet pipe 225 is connected to the flange 2231.

[0110] The flange 2231 provides a stable mounting platform for the inlet-outlet pipe 225, reducing the risk of loosening or damage of the inlet-outlet pipe 225 due to vibration or external impact. At the same time, the design of the flange 2231 also optimizes the space utilization of the cooling structure 20 to some extent, making the layout of the inlet-outlet pipe 225 on the cooling plate 22 more compact and reducing the occupation of the internal space of the battery pack 20.

[0111] Meanwhile, the connection of the inlet and outlet pipes 225 to the flange 2231 makes the connection between the inlet and outlet pipes 225 and the cooling channel 224 smoother, which helps the flow of the heat transfer medium and ensures the cooling effect.

[0112] Optionally, the inlet and outlet pipes 225 are provided with inlets and outlets on their walls, and the cooling channel 224 is provided with a connecting port, with the inlet and outlet connected to the connecting port.

[0113] In the above technical solution, the inlet and outlet pipes 225 are specially provided with inlets and outlets extending along the second direction (i.e., the length direction of the battery pack). These inlets and outlets provide smooth channels for the inflow and outflow of the heat transfer medium. At the same time, the cooling channel 224 is also provided with connecting ports extending along the second direction. These connecting ports correspond precisely to the inlets and outlets on the inlet and outlet pipes 225, ensuring that the heat transfer medium can accurately enter and leave the cooling channel 224.

[0114] In the actual connection process, the inlet and outlet pipes 225 are connected to the cooling channel 224 through the inlet and outlet on their pipe walls. Since the inlet and outlet and the connecting port are both arranged along the second direction, they can adapt well to the arrangement direction of the cooling plate 22 and the inlet and outlet pipes 225, ensuring the smooth flow of the heat transfer medium in the cooling channel 224.

[0115] Optionally, the cooling channels 224 of the upper plate section 221, the lower plate section 222, and the side plate section 223 of the same cooling plate 22 are connected.

[0116] This connection method includes opening through holes between adjacent cooling channels 224. Alternatively, in some technical solutions, the interior of the cooling plate 22 is a cavity, the cooling plate includes several reinforcing ribs, and cooling channels 224 are defined between adjacent reinforcing ribs. Through holes are provided on the reinforcing ribs located between adjacent cooling channels 224 to connect the adjacent cooling channels 224.

[0117] like Figure 1 , Figure 7 The diagram illustrates a battery pack 200 according to a second aspect embodiment of the present invention, including the cooling structure 20 in the above embodiment. This improves the overall rigidity of the battery pack 200, providing more protection and cooling for the battery cells 30.

[0118] In some real-world examples, the battery pack 200 includes: a housing 10, and a cooling structure 20 disposed within the housing 10.

[0119] In some embodiments, the box 10 comprises a top cover 11. The top cover 11 is arranged above the cooling structure 20. The top cover 11 is used to cover the top of the battery pack 200, so as to isolate the battery cells 30 from the external environment, thereby ensuring the safe operation of the battery cells 30.

[0120] In some embodiments, the box 10 comprises a side frame 12 connected with the top cover 11. Specifically, the side frame 12 surrounds and is connected to the edges of the top cover 11. The side frame 12 is used to protect the side edges of the battery pack 200, thereby improving the reliability of the battery pack 200.

[0121] In some embodiments, the box 10 comprises a bottom plate structure 13 connected with the side frame 12 away from the top cover 11. The bottom plate structure 13 is a supporting component of the battery pack 200, which bears most of the weight of the battery pack 200, and therefore needs to have high strength and rigidity. Optionally, the bottom plate structure 13 is composed of multiple layers of materials, such as a combination of metal plates and reinforcing ribs, or uses carbon fiber plates and the like to achieve the purpose of lightweight.

[0122] Optionally, the bottom plate structure 13 can be embedded with cooling liquid pipes or directly used as a carrier of the liquid cooling system, to absorb the heat generated by the battery cells 30 through the circulating flow of heat conduction medium, and maintain the working temperature of the battery pack 200 within a safe range.

[0123] In some optional embodiments, the surface of the bottom plate structure 13 is provided with positioning grooves or fixing supports of the cooling structure 20. This further ensures the stable arrangement of the cooling structure 20 inside the box 10, preventing displacement or damage caused by vibration or impact.

[0124] In yet some embodiments, the top cover 11, the side frame 12 and the bottom plate structure 13 define an electric cell space for arranging the cooling structure 20.

[0125] By arranging the cooling structure 20 in the electric cell space, it is possible to effectively prevent external impurities such as water and dust from entering, thereby protecting the operating environment of the battery cells 30.

[0126] The battery pack 200 further comprises battery cells 30 arranged in the electric cell space. Specifically, at least one battery cell 30 is arranged below the upper plate segment 221, and at least one battery cell 30 is arranged above the lower plate segment 222.

[0127] In some optional embodiments, the top cover 11 and the side frame 12 are integrally formed.

[0128] Such an integrally formed top cover 11 and side frame 12 design can improve the rigidity of the top of the box 10 to some extent.

[0129] In some optional embodiments, the top cover 11 directly serves as the floor of the vehicle body assembly 1000. The seamless design of the top cover 11 and the side frame 12 helps to improve the load-bearing capacity of the floor, and also helps to improve the crash safety of the vehicle and the torsional stiffness of the vehicle.

[0130] From the perspective of production, the seamless design of the top cover 11 and the side frame 12 can also reduce the assembly time of the top cover 11 of the battery pack 200, thereby improving the efficiency of the production line.

[0131] At the same time, the seamless design of the top cover 11 and the side frame 12 can reduce the sealing design of the traditional box and the upper cover, and the sealing performance of the top of the battery pack 200 with the seamless design of the top cover 11 and the side frame 12 is better.

[0132] In some optional embodiments, the top cover 11 and the side frame 12 are integrally die-cast.

[0133] In the above technical solution, the top cover 11 of the battery pack 200 and the side frame 12 around it are directly integrated into one whole structure, realizing seamless connection and high integration in structure.

[0134] Compared with the traditional split structure, i.e., the top cover 11 and the side frame 12 are respectively manufactured and then assembled through welding, bolt connection, etc., the integrally die-cast top cover 11 and side frame 12 can enhance the overall structural strength of the battery pack 200. This is because, in the die-casting process, the molten metal is injected into the mold under high pressure, which can fill every corner of the mold and form a dense metal structure, reducing stress concentration and potential failure points at the connection part, thereby improving the impact resistance and durability of the entire battery pack 200.

[0135] The integrally die-cast top cover 11 and side frame 12 also bring about the improvement of the flatness of the box 10. Since the top cover 11 and the side frame 12 are cast as a whole, the interface between them is perfectly fused, and there is no unevenness problem caused by assembly errors in the traditional assembly method. This not only improves the consistency of the appearance of the battery pack 200, but more importantly, ensures the installation accuracy and stability of multiple battery cells 30 inside, and ensures the use reliability of the battery pack 200.

[0136] At the same time, the integrally die-cast top cover 11 and side frame 12 reduce the weight and production cost of the battery pack 200 by reducing the number of parts and simplifying the assembly process.

[0137] In addition, due to the compact design of the structure, the overall height of the integrated die-cast box body 10 is reduced compared to the design of the traditional box body 10 plus the cover. This change provides additional space flexibility when the battery pack 200 is assembled with the vehicle body, allowing the battery pack 200 to be further moved upward in the vertical direction, thereby increasing the vehicle's ground clearance without changing the overall height of the vehicle. When the vehicle drives on uneven roads or in off-road environments, increasing its ground clearance can effectively reduce the chances of the vehicle body assembly 1000 colliding with the ground, protecting the battery pack 200 from damage. This not only prolongs the service life of the battery pack 200, but also reduces the safety hazards caused by collisions, enhancing the overall safety of the vehicle.

[0138] As some optional embodiments, referring to Figure 1 、 Figure 8 The bottom plate structure 13 includes a support sealing plate 131. The support sealing plate 131 is connected with the side frame 13. Here, by providing the support sealing plate 131, the strength and rigidity of the bottom plate structure 13 can be increased.

[0139] Optionally, the support sealing plate 131 is welded to the side frame 12. Further optionally, the support sealing plate 131 is in contact with part of the battery cells 30, improving the support effect on the battery cells 30. The support sealing plate 131 is in contact with the lower plate segment 222 of the cooling plate 22.

[0140] Specifically, the support sealing plate 131 is a plate member located below the cooling structure 20, which serves to support the cooling structure 20 and enhance the sealing performance of the battery cell space.

[0141] Here, by providing the support sealing plate 131, the strength and rigidity of the bottom plate structure 13 can be increased, providing additional protection for the battery cells 30 and the cooling plate 22, reducing the risk of damage caused by collisions or vibrations. At the same time, it can also play a role in heat insulation and buffering, helping to maintain the temperature stability inside the battery pack 200 and protect the battery cells 30 from external impact.

[0142] Secondly, the support sealing plate 131 can also increase the sealing effect between the side frame 12 and the bottom plate structure 13, effectively preventing external impurities such as water and dust from entering the inside of the battery pack 200 through the gap at the bottom of the battery pack 200, ensuring a safe operating environment for the battery cells 30.

[0143] In some optional embodiments, the bottom plate structure 13 further includes a bottom guard plate 132. The bottom guard plate 132 is connected with the side frame 12, and the bottom guard plate 132 is located on the side of the support sealing plate 131 away from the side frame 12.

[0144] In combination with Figure 1 、 Figure 9The bottom guard plate 132 is arranged below the support sealing plate 131. In this way, the bottom of the battery pack 200 can be further protected, the impact resistance of the bottom of the battery pack 200 can be enhanced, and an additional barrier can be provided to prevent damage to the inside of the battery pack 200 caused by bottom collision or foreign matter invasion.

[0145] Optionally, the edges of the bottom guard plate 132 are firmly connected to the side frame 12 of the battery pack 200 by fasteners such as bolts, nuts, or rivets. This connection method through fasteners can ensure the close fit between the bottom guard plate 132 and the side frame 12, while providing sufficient strength and stability.

[0146] In some optional embodiments, the bottom guard plate 132 is a piece of high-strength, corrosion-resistant material. For example, the bottom guard plate 132 can be a piece of stainless steel, a piece of aluminum alloy, or a piece of composite material, etc. These pieces of material can ensure that the bottom guard plate 132 maintains its shape and performance during long-term use, while providing certain protection capabilities.

[0147] In some optional embodiments, the bottom plate structure 13 includes a first sealing strip 133. The first sealing strip 133 is clamped between the side frame 12 and the bottom guard plate 132.

[0148] The first sealing strip 133 can enhance the sealing effect between the side frame 12 and the bottom guard plate 132.

[0149] In actual application, the battery pack 200 often needs to face complex and variable environmental conditions, such as dust, moisture, and even possible corrosion by corrosive substances. These external factors not only affect the efficiency of the cooling system, but also may threaten the performance and safety of the battery pack 200.

[0150] The addition of the first sealing strip 133, like a solid barrier, effectively reduces the invasion of these external factors. It closely fits between the side frame 12 and the bottom guard plate 132, filling the tiny gaps between them, thereby preventing the penetration of harmful substances such as dust and moisture. This sealing effect not only protects the internal structure of the battery pack 200, but also prolongs its service life.

[0151] In addition, the first sealing strip 133 also has a certain shock absorption and buffering effect. When the battery pack 200 or the cooling structure 20 is impacted by external force, it can absorb part of the impact force and reduce the damage to the side frame 12 and the bottom guard plate 132. This design not only improves the impact resistance of the entire structure, but also ensures the stable operation of the cooling system under various conditions.

[0152] In some optional embodiments, the box body 10 further includes a first adhesive layer 14 arranged between the top cover 11 and the cooling structure 20.

[0153] Here, the first glue layer 14 is arranged between the top cover 11 and the cooling structure 20. The main role of the first glue layer 14 is to provide an additional sealing barrier to ensure that the connection between the top cover 11 and the cooling structure 20 will not become a potential leakage point. In practical application, the first glue layer 14 can effectively block external dust, moisture and other contaminants from entering the inside of the box 10, thereby protecting the cooling structure 20. In addition, the first glue layer 14 can also enhance the structural connection between the top cover 11 and the cooling structure 20 to some extent, and improve the impact and vibration resistance of the box 10.

[0154] Optionally, the box 10 further comprises: a second glue layer 15 arranged between the support sealing plate 131 and the cooling structure 20.

[0155] The second glue layer 15 is arranged between the support sealing plate 131 and the cooling structure 20. The support sealing plate 131 is an important component of the bottom of the box 10, which provides additional support and protection to ensure that the cooling structure 20 can be stably installed inside the box. The addition of the second glue layer 15 can enhance the sealing between the support sealing plate 131 and the cooling structure 20, reduce the risk of external impurities, and further improve the overall structural strength of the box 10 by its adhesion and curing effect. The stability and reliability of the cooling structure 20 during long-term use are further improved.

[0156] As shown in Figure 1 The vehicle body assembly 1000 according to the third aspect of the present application comprises: a battery pack 200, and the battery pack 200 is the battery pack 200 according to the second aspect of the present application.

[0157] By arranging the battery pack 200 according to the first aspect of the present application, the temperature uniformity between the battery cells 30 is improved, the temperature consistency of the plurality of battery cells 30 inside the battery pack 200 is ensured, and the adaptability of the battery pack 200 to fast charging demand is enhanced, so that the vehicle body assembly 1000 can realize fast charging more efficiently and safely.

[0158] According to some embodiments, the vehicle body assembly 1000 comprises: a vehicle body frame 100. The battery pack 200 is mounted on the vehicle body frame 100.

[0159] Optionally, the battery pack 200 can be mounted below the vehicle body frame 100. In this way, the space utilization of the structure of the vehicle body frame 100 can be improved.

[0160] In some optional embodiments, the vehicle body frame 100 comprises two rocker beams 101 and a plurality of cross beams 102, the two rocker beams 101 being arranged at intervals. The plurality of cross beams 102 are connected between the two rocker beams 101. The battery pack 200 is connected on at least two cross beams 102 and the two rocker beams 101, and the top cover 11 of the battery pack 200 is located in the space between the two rocker beams 101, and the top cover 11 constitutes at least part of the floor of the vehicle body assembly 1000.

[0161] In the above technical solution, the top cover 11 of the battery pack 200 constitutes part of the floor of the vehicle body assembly 1000. This structural design is a CTB (Cell to Body, i.e. cell to vehicle body) structure.

[0162] Specifically, the CTB structure can realize the integration of the cell 30 and the vehicle body frame 100, to a certain extent, remove the redundant structure between the traditional battery pack and the vehicle body, such as the shell and part of the support structure of the battery pack, improve the integration of the whole vehicle, so that the battery pack 200 can be more closely integrated with the vehicle body, and at the same time, help to reduce the weight and cost of the whole vehicle.

[0163] Since the top cover 11 of the battery pack 200 directly constitutes part of the floor of the vehicle body assembly 1000, the CTB structure can maximize the use of the space below the vehicle body assembly 1000, which helps to increase the capacity of the battery pack 200, or provide more spacious seating for passengers and more storage space for luggage.

[0164] Furthermore, since the redundant structure between the traditional battery pack 200 and the vehicle body is reduced, the battery pack 200 can be further moved upward in the vertical direction, thereby increasing the ground clearance of the vehicle without changing the overall height of the vehicle. Then, when the vehicle is driving on uneven road or in off-road environment, the higher ground clearance can reduce the collision opportunity between the vehicle body assembly 1000 and the ground, protecting the battery pack 200 from damage. This not only prolongs the service life of the battery pack 200, but also reduces the safety hazards caused by collision, and enhances the overall safety of the vehicle.

[0165] It can be understood that a separate floor member is provided on the conventional vehicle body frame for mounting on the two rocker beams 101 and the plurality of cross beams 102. The complete floor member has a large area size, and the area of the floor member needed to be mounted on the vehicle body frame 100 can be greatly reduced by using the top cover 11 as part of the floor member.

[0166] In some optional embodiments, as shown in Figure 1 The battery pack 200 further comprises a second sealing strip 40. The second sealing strip 40 is connected between the top cover 11 and the vehicle body frame 100.

[0167] Here, the second sealing strip 40 can be in the form of a filled glue layer, or it can also be a separate sealing piece made of elastic rubber, silicone or other materials with higher sealing performance. By providing the second sealing strip 40, a tight and durable seal between the top cover 11 and the vehicle body frame 100 can be ensured, effectively blocking the intrusion of external harmful factors such as moisture and dust, and protecting the cleanliness and safety of the internal environment of the battery pack 200.

[0168] According to the fourth aspect of the utility model, the vehicle comprises the vehicle body assembly 1000 of the third aspect of the utility model.

[0169] It should be noted that the vehicle can be a fuel automobile, a gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid automobile or a range extended automobile. The battery pack 200 in the vehicle can be used for power supply of the vehicle, for example, the battery pack 200 can be used as an operating power source of the vehicle. The vehicle can further comprise a controller and a motor, and the controller is used to control the battery pack 200 to supply power to the motor, for example, to meet the power demand of the vehicle during starting, navigation and driving.

[0170] The vehicle in the embodiment has better cooling effect due to the battery pack 200, which helps to improve the reliability of the vehicle.

[0171] The following will be described with reference to Figure 2 - Figure 6 A cooling structure 20 according to the embodiment of the utility model will be described in detail with a specific embodiment. It should be understood that the following description is only exemplary and is not a specific limitation of the utility model.

[0172] Referring to Figure 2 , the cooling structure 20 comprises a cooling plate 22 and an inlet and outlet pipe 225.

[0173] Referring to Figures 3-4 , the cooling plate 22 is arranged to extend along a first direction.

[0174] Referring to Figure 5 , the cooling plate 22 comprises an upper plate segment 221, a lower plate segment 222 and a side plate segment 223, the upper plate segment 221 is higher than the lower plate segment 222, the upper plate segment 221 and the lower plate segment 222 are arranged along the first direction, and the upper plate segment 221 and the lower plate segment 222 are connected through the side plate segment 223.

[0175] Referring to Figure 6 , the battery cell 30 is arranged on the cooling plate 22, part of the battery cell 30 is arranged below the upper plate segment 221 and is in thermal connection with the upper plate segment 221, and part of the battery cell 30 is arranged above the lower plate segment 222 and is in thermal connection with the lower plate segment 222.

[0176] The upper plate segments 221 and the lower plate segments 222 are alternately arranged along the first direction, and each adjacent upper plate segment 221 and lower plate segment 222 is connected through a side plate segment 223.

[0177] Each upper plate segment 221 is provided below with an electric cell 30, and each lower plate segment 222 is provided above with an electric cell 30.

[0178] The electric cell 30 adjacent to the side plate segment 223 is in heat-conducting connection with the side plate segment 223.

[0179] The electric cell 30 and the cooling plate 22 are connected through heat-conducting glue.

[0180] The cooling plate 22 is provided with a cooling channel 224, and the cooling channel 224 is arranged on the upper plate segments 221, the lower plate segments 222 and the side plate segments 223, and the cooling channels 224 on the upper plate segments 221, the lower plate segments 222 and the side plate segments 223 are in communication.

[0181] The inlet and outlet pipe 225 is in communication with the cooling channel 224. The cooling plate 22 is provided with the inlet and outlet pipe 225 at both ends in the first direction, and both ends of the inlet and outlet pipe 225 are in communication with the cooling channel 224.

[0182] The cooling plate 22 is a plurality of. The plurality of cooling plates 22 are arranged in sequence along a second direction, and the first direction is perpendicular to the second direction.

[0183] The inlet and outlet pipe 225 is in communication with the cooling channel 224 on each cooling plate 22.

[0184] One end of the cooling plate 22 in the first direction is a side plate segment 223, and the side plate segment 223 is outwardly formed with a flange 2231, and the inlet and outlet pipe 225 is arranged on the flange 2231.

[0185] The inlet and outlet pipe 225 is provided with an inlet and outlet extending along the second direction, and the cooling channel 224 is provided with a communication port extending along the second direction, and the inlet and outlet pipe 225 is in communication with the cooling channel 224 through the inlet and outlet and the communication port.

[0186] Other configurations of the cooling structure 20 according to the embodiments of the present application, such as the battery pack 200, the vehicle body assembly 1000, the vehicle, and the like, and the operation are known to those skilled in the art, and will not be described in detail herein.

[0187] In the description of the present specification, the description referring to the terms "embodiment", "example", and the like means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0188] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A cooling structure, characterized by, The cooling structure comprises: a cooling plate, the cooling plate comprising an upper plate segment, a lower plate segment and a side plate segment, the upper plate segment being higher than the lower plate segment, the upper plate segment and the lower plate segment being arranged along a first direction, the upper plate segment and the lower plate segment being connected by the side plate segment.

2. The cooling structure according to claim 1, characterized by The number of the upper plate segment, the lower plate segment and the side plate segment is at least three, wherein the upper plate segment and the lower plate segment are alternately arranged along the first direction, and the adjacent upper plate segment and the lower plate segment are connected by the side plate segment.

3. The cooling structure according to claim 2, characterized by At least one battery cell is arranged below each of the upper plate segments, and at least one battery cell is arranged above each of the lower plate segments. The upper plate segment is adapted to be in thermal contact with at least one battery cell arranged below the upper plate segment, and the lower plate segment is adapted to be in thermal contact with at least one battery cell arranged above the lower plate segment.

4. The cooling structure according to claim 3, characterized by The battery cell adjacent to the side plate segment is in thermal contact with the side plate segment.

5. The cooling structure according to claim 4, characterized by At least one side of each of the battery cells is in thermal contact with the side plate segment.

6. The cooling structure according to claim 3, characterized by The battery cell and the cooling plate are connected by a thermal conductive adhesive.

7. The cooling structure according to claim 1, characterized by The cooling plate is provided with a cooling channel.

8. The cooling structure according to claim 7, characterized by The cooling channel is arranged on at least one of the upper plate segment, the lower plate segment and the side plate segment.

9. The cooling structure according to claim 7, characterized by The cooling structure further comprises an inlet and outlet pipe, the inlet and outlet pipe being connected to the cooling plate and being in communication with the cooling channel.

10. The cooling structure according to claim 9, characterized by The cooling plate is provided with the inlet and outlet pipe at both ends in the first direction.

11. The cooling structure according to claim 9, characterized by The cooling plate is at least two, and at least two of the cooling plates are arranged in sequence. The inlet and outlet pipe is in communication with the cooling channel on at least two of the cooling plates.

12. The cooling structure according to claim 10, characterized by The side plate segment is arranged at one end of the cooling plate along the first direction, and a flange is formed outwardly on the side plate segment, and the inlet and outlet pipe is connected to the flange.

13. The cooling structure according to claim 12, characterized by The inlet and outlet pipe is provided with an inlet and outlet on the pipe wall, and the cooling channel is provided with a communication port, and the inlet and outlet and the communication port are in communication.

14. The cooling structure according to claim 13, characterized by The cooling channel of the upper plate segment, the cooling channel of the lower plate segment and the cooling channel of the side plate segment of the same cooling plate are in communication.

15. A battery pack, characterized by The battery pack comprises the cooling structure according to any one of claims 1-14.

16. The battery pack of claim 15, wherein, Further comprising: a box body, and the cooling structure is arranged in the box body.

17. The battery pack of claim 16, wherein, The box body comprises: a top cover; a side frame connected to the top cover.

18. The battery pack of claim 17, wherein, The box body further comprises a bottom plate structure connected to the side frame away from the top cover.

19. The battery pack of claim 18, wherein, The battery pack further comprises battery cells. The top cover, the side frame and the bottom plate structure enclose to define a battery cell space for arranging the cooling structure. The battery cells are located in the battery cell space, and at least one of the battery cells is arranged below the upper plate segment, and at least one of the battery cells is arranged above the lower plate segment.

20. The battery pack of claim 17, wherein, The top cover and the side frame are integrally formed.

21. The battery pack of claim 17, wherein, The top cover and the side frame are integrally formed by die casting.

22. The battery pack of claim 18, wherein, The bottom plate structure comprises a support sealing plate connected to the side frame.

23. The battery pack of claim 22, wherein, The bottom plate structure further comprises: a bottom guard plate connected to the side frame, and the bottom guard plate is located away from the side frame on the side of the support sealing plate.

24. The battery pack of claim 23, wherein, The bottom plate structure comprises a first sealing strip clamped between the side frame and the bottom guard plate.

25. The battery pack of claim 22, wherein, The box further comprises a first adhesive layer arranged between the top cover and the cooling structure.

26. The battery pack of claim 22, wherein, The box further comprises a second adhesive layer arranged between the support sealing plate and the cooling structure.

27. A vehicle body assembly characterized by, The battery pack of any one of claims 15-26. The battery pack of any one of claims 15-26.

28. The vehicle body assembly of claim 27, wherein, A vehicle body frame; The battery pack is mounted on the vehicle body frame. The vehicle body frame comprises:

29. The vehicle body assembly of claim 28, wherein, Two rocker beams arranged at intervals; A plurality of cross beams connected between the two rocker beams; The battery pack is connected with at least two cross beams and two rocker beams, and a top cover of the battery pack is located in a space between the two cross beams and the two rocker beams, and the top cover constitutes at least part of a floor in the vehicle body assembly. When the box is provided with a top cover, the battery pack comprises a second sealing strip connected between the top cover and the vehicle body frame.

30. The body assembly of claim 28, wherein, The vehicle body assembly of any one of claims 27-30.

31. A vehicle characterized by ​

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