Battery cell accommodating device, battery pack and vehicle

Abstract

The utility model relates to the technical field of battery packs, and discloses a battery cell accommodating device, a battery pack and a vehicle, the battery cell accommodating device comprises a box body, the box body is internally provided with a main placing area for placing a battery cell, the box body comprises a bottom plate and a boundary beam surrounding the bottom plate, and an accommodating cavity is arranged in the boundary beam corresponding to the main placing area; the liquid cooling assembly comprises a liquid cooling plate and a switching structure, the liquid cooling plate is connected with a cooling liquid source through the switching structure, the liquid cooling plate is arranged at the bottom of the main placement area, and the switching structure is located in the containing cavity. According to the utility model, the switching structure is arranged in the accommodating cavity inside the edge beam, so that the space inside the box body, which is originally occupied by the switching structure, can be effectively saved, more battery cells can be arranged by utilizing the space, and the volume utilization rate of the battery pack is greatly improved by increasing the accommodating space of the main placing area.

Description

Technical Field

[0001] This utility model relates to the field of battery pack technology, specifically to a cell housing device, a battery pack, and a vehicle. Background Technology

[0002] The battery pack is an important energy supply structure in electric and hybrid vehicles. The volume utilization rate of the battery pack refers to the ratio of the total volume of the cells in the battery pack to the total volume of the battery pack. When applying the battery pack, it is necessary to meet both the space requirements of the vehicle and the pure electric range requirements of the vehicle. Therefore, the size of the vehicle body space occupied by the battery pack and the number of cells in the battery pack are important considerations in the design of the battery pack.

[0003] Currently, existing battery packs typically have a cooling plate at the bottom of the battery cells. The inlet and outlet of the cooling plate are connected to the outside via coolant pipes. The installation of coolant pipes usually requires occupying some space inside the battery pack, reducing the installation space for the battery cells and resulting in poor volume utilization of the battery pack. Utility Model Content

[0004] In view of this, the present invention provides a cell housing device, a battery pack, and a vehicle to solve the problem of poor volume utilization of existing battery packs.

[0005] In a first aspect, this utility model provides a battery cell housing device for housing battery cells of a battery pack. The battery cell housing device includes: a housing with a main placement area for housing the battery cells inside, the housing including a bottom plate and side beams surrounding the bottom plate, and a housing cavity provided inside the side beams corresponding to the main placement area; a liquid cooling assembly including a liquid cooling plate and a connecting structure, the liquid cooling plate being connected to a coolant source through the connecting structure, the liquid cooling plate being disposed at the bottom of the main placement area, and the connecting structure being located in the housing cavity.

[0006] Beneficial effects: By setting the adapter structure in the receiving cavity inside the side beam, the space inside the box originally occupied by the adapter structure can be effectively saved. More battery cells can be installed in this space. By increasing the receiving space of the main placement area, the volume utilization rate of the battery pack is greatly improved, effectively solving the problem of poor volume utilization rate of existing battery packs.

[0007] In one alternative embodiment, one side of the side beam of the housing located on the rear side of the main placement area forms a mating surface that mates with the battery cell, and the receiving cavity is located inside the side beam.

[0008] Beneficial effects: By directly replacing the expansion beam with the side beam, the volume of the main placement area is further increased, thereby improving the volume utilization rate of the battery pack.

[0009] In one optional embodiment, the liquid cooling plate has a flow channel for the circulation of coolant. The liquid cooling plate has an inlet and an outlet on the side of the side beam located near the rear of the main placement area. The inlet and outlet are spaced apart at the middle position of the side beam located at the rear of the main placement area.

[0010] Beneficial effects: Since the inlet and outlet are close together, they can be directly connected to the external coolant delivery pipeline through a shorter adapter structure, which can effectively simplify the structural complexity of the adapter structure.

[0011] In one alternative embodiment, the adapter structure includes two adapters, one of which is connected to the liquid inlet and the other is connected to the liquid outlet. The two adapters are spaced apart, and the side beam located on the rear side of the main placement area has two spaced-apart receiving cavities corresponding to the two adapters.

[0012] Beneficial effects: The adapter structure includes two independent adapters, each with a corresponding receiving cavity. The two smaller receiving cavities have less impact on the structural strength of the side beam located on the rear side of the main placement area compared to the single larger receiving cavity of the integral structure.

[0013] In one optional embodiment, the side beam located on the rear side of the main placement area has a first opening communicating with the receiving cavity on the side corresponding to the liquid cooling plate, and the side beam located on the rear side of the main placement area away from the main placement area has a second opening communicating with the receiving cavity. The adapter includes a vertical adapter section and a longitudinal adapter section. The lower end of the vertical adapter section is connected to the liquid cooling plate through the first opening, and the upper end of the vertical adapter section is correspondingly set with the second opening through the longitudinal adapter section. The longitudinal adapter section is located inside the receiving cavity, or the end of the longitudinal adapter section extends out from the second opening, and the length of the part of the longitudinal adapter section extending out of the second opening is less than the length of the part of the longitudinal adapter section located in the receiving cavity.

[0014] Beneficial effects: The adapter has a simple overall structure and a short longitudinal transition section. This type of adapter is less likely to interfere with external structures and can be better protected by the side beam located on the rear side of the main placement area. When the vehicle scrapes the bottom, it is less likely to scratch the adapter, reducing the risk of damage and leakage at the inlet and outlet.

[0015] In one alternative embodiment, the battery pack includes a control structure connected to the battery cells, and the housing also has a secondary placement area for placing the control structure. The battery cell housing also includes an expansion beam disposed inside the housing and used to separate the secondary placement area and the primary placement area. At least a portion of the middle part of the expansion beam protrudes toward one side of the secondary placement area to form a protruding structure, and the protruding structure forms a space for placing the battery cells on one side of the primary placement area.

[0016] Beneficial effects: By setting a protruding structure on the expansion beam, the protruding structure protrudes towards one side of the secondary placement area and forms an additional space for placing the battery cells in the corresponding part of the main placement area. Since the protruding structure is set in the middle of the expansion beam, interference with the corner area of ​​the box corresponding to the edge of the secondary placement area can be avoided.

[0017] In one alternative embodiment, the expansion beam includes a first transverse segment, a second transverse segment, a third transverse segment, a first longitudinal segment, and a second longitudinal segment. One end of the second transverse segment is connected to the first transverse segment via the first longitudinal segment, and the other end of the second transverse segment is connected to the third transverse segment via the second longitudinal segment. The first longitudinal segment, the second transverse segment, and the second longitudinal segment form a protruding structure.

[0018] Beneficial effects: The expansion beam structure is simple and reliable, and each protruding structure can accommodate more battery cells, avoiding wasted space.

[0019] In one alternative embodiment, a plurality of reinforcing ribs are provided on the side beam located on the rear side of the main placement area, and / or the cell housing device further includes at least one connector, which is assembled and connected to the side of the side beam located on the rear side of the main placement area away from the main placement area, and the connector is L-shaped.

[0020] Beneficial effects: The reinforcing ribs can effectively improve the structural strength and bending resistance of the corresponding edge beams, and the connectors can further improve the structural reliability of the corresponding edge beams.

[0021] Secondly, this utility model also provides a battery pack, which includes: the above-mentioned cell housing device; and a cell disposed in the main placement area of ​​the cell housing device.

[0022] Thirdly, the present invention also provides a vehicle comprising: the aforementioned cell housing device, or the aforementioned battery pack. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional schematic diagram of a battery cell receiving device according to an embodiment of the present invention, in which a battery cell is installed.

[0025] Figure 2 for Figure 1 A three-dimensional schematic diagram of the top plate of the cell housing device after removing the cell and liquid cooling plate;

[0026] Figure 3 for Figure 2 A three-dimensional schematic diagram showing the bottom of the battery cell housing device with the base plate removed;

[0027] Figure 4 for Figure 2 A three-dimensional schematic diagram of the cell housing device with the expansion beam removed;

[0028] Figure 5 for Figure 4 An enlarged schematic diagram of point A of the battery cell housing shown;

[0029] Figure 6 for Figure 1 A three-dimensional schematic diagram from a first-view perspective of the side beam of the cell housing device located on the rear side of the main placement area;

[0030] Figure 7 for Figure 6 The diagram shown is a two-dimensional view of the side beam located on one side of the rear of the main placement area.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Box body; 101. Secondary placement area; 102. Main placement area; 103. Side beam; 1031. Receiving cavity; 1033. Mating surface; 1034. First opening; 1035. Second opening; 104. Base plate; 105. Reinforcing rib; 106. Connecting parts;

[0033] 2. Expansion beam; 201. First transverse section; 202. Second transverse section; 203. Third transverse section; 204. First longitudinal section; 205. Second longitudinal section;

[0034] 3. Liquid cooling assembly; 301. Liquid cooling plate; 3011. Flow channel; 302. Adapter structure; 3021. Adapter joint; 3022. Vertical adapter section; 3023. Longitudinal adapter section;

[0035] 4. Control structure; 5. Battery cell. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0037] The following is combined with Figures 1 to 7 The following describes embodiments of the present invention.

[0038] In related technologies, in order to fit the installation space of the vehicle, the battery pack usually has a corner area at the end. Since the space in the corner area is not a regular rectangle, the cell installation space inside the existing battery pack is usually designed to avoid the corner area. This leads to the problem of not making full use of the internal space of the battery pack, resulting in poor volume utilization of the battery pack.

[0039] According to an embodiment of the present invention, a cell housing device is provided for housing the cells 5 of a battery pack. The cell housing device includes a housing 1 and a liquid cooling assembly 3. The housing 1 has a main placement area 102 for housing the cells 5. The housing 1 includes a bottom plate 104 and a side beam 103 surrounding the bottom plate 104. The side beam 103 corresponding to the main placement area 102 has a housing cavity 1031. The liquid cooling assembly 3 includes a liquid cooling plate 301 and a transition structure 302. The liquid cooling plate 301 is connected to a coolant source through the transition structure 302. The liquid cooling plate 301 is disposed at the bottom of the main placement area 102, and the transition structure 302 is located in the housing cavity 1031.

[0040] By using the cell housing device of this embodiment, the space inside the housing 1031 inside the side beam 103 can be effectively saved by setting the adapter structure 302 in the housing cavity 1031. More cells 5 can be installed in this space. By increasing the housing space of the main placement area 102, the volume utilization rate of the battery pack is greatly improved, and the problem of poor volume utilization rate of existing battery packs is effectively solved.

[0041] In related technologies, in order to facilitate the transfer of coolant from the outside of the battery pack to the inside of the liquid cooling plate 301, the liquid cooling plate 301 usually needs to be connected to the outside via a transfer structure 302. In order to better arrange the transfer structure 302, a portion of the space for installing the transfer structure 302 is usually separated on the side of the main placement area 102 of the housing 1 away from the secondary placement area 101 by an expansion beam. The cell housing device of this embodiment can effectively release the space inside the housing 1 occupied by the transfer structure 302, and the structure is simple and reliable.

[0042] It is understandable that, as an alternative implementation, the housing 1 may not have a bottom plate 104 but only a side beam 103. The liquid cooling plate 301 of the liquid cooling assembly 3 can be directly used as the bottom plate to support the battery cell 5, and the side beam 103 can be surrounded around the edge of the liquid cooling plate 301.

[0043] Specifically, there is no limitation on the type of coolant flowing in the liquid cooling plate 301. It can be a special coolant or cooling water, and can be flexibly selected according to the needs.

[0044] Furthermore, there are no restrictions on the specifications and dimensions of battery cell 5; it can be flexibly selected according to requirements.

[0045] In this embodiment, one side of the side beam 103 located on the rear side of the main placement area 102 of the housing 1 forms a mating surface 1033 that mates with the battery cell 5. The receiving cavity 1031 is located inside the side beam 103. By eliminating the space occupied by the transition structure 302, the expansion beam on the side of the main placement area 102 away from the secondary placement area 101 is further saved. The expansion beam can be directly replaced by the side beam 103 located on the rear side of the main placement area 102, which has more reliable structural strength, thereby further increasing the volume of the main placement area 102 and thus improving the volume utilization rate of the battery pack.

[0046] It should be noted that the side beam 103 on the rear side of the main placement area 102 refers to... Figure 2 The side beam 103, which directly mates with cell 5 in the longitudinal direction indicated by the middle arrow, refers to the rear part. Figure 1 The direction of the main placement area 102 away from the side of the expansion beam 2.

[0047] Specifically, such as Figure 2 , Figure 6 as well as Figure 7 As shown, in order to improve the reliability of the side beam 103 located on the rear side of the main placement area 102, the side beam 103 located on the rear side of the main placement area 102 is thicker than the conventional side beam 103, and a hollow structure is also provided on the side away from the battery cell 5 to further enhance the structural strength of the side beam 103 located on the rear side of the main placement area 102 to withstand the force transmitted after the expansion of the battery cell 5. The side beam 103 located on the rear side of the main placement area 102 is a casting. Through casting, the relatively complex side beam 103 located on the rear side of the main placement area 102 can be formed in one piece. The side beam 103 located on the rear side of the main placement area 102 has better integrity and higher structural strength.

[0048] Furthermore, the side beam 103 located on the rear side of the main placement area 102 is made of cast aluminum, which is stronger and lighter, and the oxide layer formed on its surface makes it less susceptible to corrosion.

[0049] It is understood that, as an alternative implementation, the side beam 103 located on one side of the rear of the main placement area 102 can be a casting of other materials. This is not strictly limited and can be flexibly selected according to needs.

[0050] In this embodiment, the receiving cavity 1031 is located inside the side beam 103 on the rear side of the main placement area 102. The receiving cavity 1031 can be formed relatively easily by casting the side beam 103 on the rear side of the main placement area 102. Since the side beam 103 on the rear side of the main placement area 102 has higher overall strength, it can still reliably cooperate with the battery cell 5 after the receiving cavity 1031 is set in the side beam 103 on the rear side of the main placement area 102.

[0051] It is understood that, as an alternative implementation, the receiving cavity 1031 can also be set in other side beams 103 that are not located on the side of the side beam 103 at the rear of the main placement area 102, as long as the structural strength of the corresponding side beam 103 still meets the requirements after the receiving cavity 1031 is set. It can be flexibly selected according to the specific setting of the transition structure 302.

[0052] In this embodiment, the liquid cooling plate 301 has a flow channel 3011 for the circulation of coolant. The liquid cooling plate 301 is provided with an inlet and an outlet on the side of the side beam 103 located on the rear side of the main placement area 102. The inlet and outlet are spaced apart at the middle position of the side beam 103 located on the rear side of the main placement area 102. Since the distance between the inlet and outlet is relatively short, they can be directly connected to the external coolant delivery pipeline through a short connecting structure 302, which can effectively simplify the structural complexity of the connecting structure 302.

[0053] In related technologies, due to the design limitations of the flow channels inside the liquid cooling plate 301, the liquid inlet and outlet on the side of the side beam 103 located near the rear of the main placement area 102 are usually far apart. The liquid inlet and outlet are located at both ends of the liquid cooling plate 301 in the lateral direction. In order to facilitate the installation of external coolant pipelines, the transition structure 302 is usually set in the middle of the side beam 103 located at the rear of the main placement area 102, and is connected to the opening of the corresponding liquid cooling plate 301 through a long connecting pipe set inside the housing 1. Therefore, it occupies the space inside the housing 1. At the same time, if this type of connecting pipe and transition structure 302 are all housed inside the side beam 103 located at the rear of the main placement area 102, the structural strength of the side beam 103 located at the rear of the main placement area 102 will be significantly reduced.

[0054] The cell housing device in this embodiment can effectively avoid the above-mentioned situation, such as Figure 2 and Figure 3 As shown, by changing the flow channel inside the liquid cooling plate 301, the liquid inlet and outlet can directly correspond to the adapter structure 302 without the need for additional connecting pipes, thus effectively reducing the volume of the receiving cavity 1031.

[0055] In this embodiment, the adapter structure 302 includes two adapters 3021, one of which is connected to the liquid inlet and the other is connected to the liquid outlet. The two adapters 3021 are spaced apart. The side beam 103 located on the rear side of the main placement area 102 has two spaced-apart receiving cavities 1031 corresponding to the two adapters 3021. The adapter structure 302 includes two independent adapters 3021, each adapter 3021 having a corresponding receiving cavity 1031. The two smaller receiving cavities 1031 have less impact on the structural strength of the side beam 103 located on the rear side of the main placement area 102 compared to the single larger receiving cavity 1031.

[0056] It is understood that, as an alternative implementation, the adapter structure 302 may also be an adapter 3021 with two passages, and the side beam 103 located on the rear side of the main placement area 102 is provided with a separate receiving cavity 1031 corresponding to the adapter 3021.

[0057] Specifically, such as Figure 6 and Figure 7 As shown, two receiving cavities 1031 are spaced apart, and the side beam 103 located on the rear side of the main placement area 102 forms a separate chamber in the middle of the two receiving cavities 1031. The partition structure between the chamber and the receiving cavity 1031 can improve the local load-bearing capacity.

[0058] In this embodiment, the side beam 103 located on the rear side of the main placement area 102 has a first opening 1034 communicating with the receiving cavity 1031 on the side corresponding to the liquid cooling plate 301. The side beam 103 located on the rear side of the main placement area 102 away from the main placement area 102 has a second opening 1035 communicating with the receiving cavity 1031. The adapter 3021 includes a vertical adapter section 3022 and a longitudinal adapter section 3023. The lower end of the vertical adapter section 3022 is connected to the liquid cooling plate 301 through the first opening 1034, and the upper end of the vertical adapter section 3022 is correspondingly arranged with the second opening 1035 through the longitudinal adapter section 3023. 023 is located inside the receiving cavity 1031, or the end of the longitudinal transition section 3023 extends out from the second opening 1035. The length of the part of the longitudinal transition section 3023 extending out of the second opening 1035 is less than the length of the part of the longitudinal transition section 3023 located in the receiving cavity 1031. The overall structure of the adapter 3021 is simple and the longitudinal transition section 3023 is relatively short. This type of adapter 3021 is less likely to interfere with the external structure and can be better protected by the side beam 103 located on the rear side of the main placement area 102. When the vehicle scrapes the bottom, it is less likely to scratch the adapter 3021, reducing the risk of damage and leakage at the inlet and outlet.

[0059] Vertical refers to Figure 5The "vertical" direction indicated by the middle arrow refers to the longitudinal direction. Figure 5 The "vertical" direction indicated by the middle arrow.

[0060] It is understood that, as an alternative implementation, the adapter 3021 can be a completely arc-shaped conduit or a continuous curved conduit.

[0061] Furthermore, such as Figure 2 As shown, since there is still space between the adapter 3021 and the inner wall of the receiving cavity 1031 after installation, in order to further improve the reliability of the adapter 3021 after installation, the remaining gap inside the receiving cavity 1031 is filled with a sealing filler material such as sealant after the adapter 3021 is installed, which improves the stability of the adapter 3021 while ensuring the sealing performance of the receiving cavity 1031.

[0062] In this embodiment, the cell housing device also includes an insulating pad, which is disposed on the mating surface 1033. The mating surface 1033 abuts against the cell 5 through the insulating pad. The insulating pad can prevent the cell 5 from being electrically connected to the side beam 103 located on the rear side of the main placement area 102, thereby improving the overall safety of the battery pack after the cell housing device is installed.

[0063] Specifically, there are no restrictions on the material of the insulating mat; it can be an elastic plastic mat, rubber mat, etc., and can be flexibly selected according to needs.

[0064] In this embodiment, the battery pack includes a control structure 4 connected to the battery cell 5. The housing 1 also has a secondary placement area 101 for placing the control structure 4. The battery cell housing device also includes an expansion beam 2. The expansion beam 2 is disposed inside the housing 1 and is used to separate the secondary placement area 101 and the main placement area 102. At least a portion of the middle part of the expansion beam 2 protrudes toward one side of the secondary placement area 101 and forms a protruding structure. The protruding structure forms a space for placing the battery cell 5 on one side of the main placement area 102. By providing a protruding structure on the expansion beam 2, the protruding structure protrudes toward one side of the secondary placement area 101 and forms an additional space for placing the battery cell 5 in the corresponding part of the main placement area 102. Since the protruding structure is disposed in the middle part of the expansion beam 2, interference with the corner area of ​​the housing 1 corresponding to the edge of the secondary placement area 101 can be avoided.

[0065] Specifically, the cell housing device of this embodiment can effectively increase the number of cells 5 installed. Taking the specifications and dimensions of the battery pack in the attached figure as an example, by using the cell housing device of this embodiment, 10 more cells 5 can be arranged, the power capacity increases by about 5 kWh, the volume utilization rate is increased by about 6%, and the corresponding range increases by about 40 km.

[0066] In related technologies, in order to meet the installation space requirements of the vehicle, the battery pack usually has a corner area at the end of the housing 1. The end of the housing 1 with the corner area is usually divided into a "trapezoidal" placement space, that is, the sub-placement area 101 is usually "trapezoidal". The control structure 4 is usually small in size, so the control structure 4 can be installed in the placement space. However, after the control structure 4 is installed, there is still some space in the sub-placement area 101 that is not effectively utilized. Since the battery cells 5 are usually arranged in rows of rectangles, in order to avoid the row of battery cells 5 interfering with the edge of the "trapezoidal" sub-placement area 101, the remaining space in the sub-placement area 101 is usually not effectively utilized.

[0067] The cell housing device in this embodiment makes full use of the remaining space in the secondary placement area 101, increasing the area in the cell housing device that can be used to place the cell 5, so that more cells 5 can be placed in a single battery pack with the same total volume, effectively solving the problem of poor volume utilization of existing battery packs.

[0068] In this embodiment, the expansion beam 2 includes a first transverse segment 201, a second transverse segment 202, a third transverse segment 203, a first longitudinal segment 204, and a second longitudinal segment 205. One end of the second transverse segment 202 is connected to the first transverse segment 201 through the first longitudinal segment 204, and the other end of the second transverse segment 202 is connected to the third transverse segment 203 through the second longitudinal segment 205. The first longitudinal segment 204, the second transverse segment 202, and the second longitudinal segment 205 form a protruding structure. The structure is simple and reliable, and a single protruding structure can accommodate more battery cells 5, avoiding space waste.

[0069] It is understandable that, as an alternative implementation, the expansion beam 2 may have an arc-shaped edge on the side near the secondary placement area 101, while the edge on the side near the main placement area 102 may have a continuous multi-segment broken line. Its shape can be selected according to the strength requirements, as long as it can form a space for placing the battery cell 5.

[0070] Among them, horizontal refers to Figure 2 The horizontal direction indicated by the middle arrow refers to the vertical direction. Figure 2 The "vertical" direction indicated by the middle arrow should be noted as follows: Figure 2 The direction indicated by the middle arrow is "vertical" and Figure 5 The direction indicated by the middle arrow is consistent with the "vertical" direction.

[0071] In this embodiment, a number of reinforcing ribs 105 are provided on the side beam 103 located on the rear side of the main placement area 102. The number of reinforcing ribs 105 can effectively improve the structural strength and bending resistance of the corresponding side beam 103.

[0072] Specifically, such as Figure 6As shown, several reinforcing ribs 105 are intersecting and forming a hollow frame structure at the corresponding position of the side beam 103.

[0073] In this embodiment, the cell housing device further includes at least one connector 106, which is assembled and connected to the side of the side beam 103 located on the rear side of the main placement area 102, away from the main placement area 102. The connector 106 is L-shaped. The connector 106 can further improve the structural reliability of the corresponding side beam 103.

[0074] Specifically, such as Figure 6 As shown, two L-shaped connectors 106 are symmetrically arranged on the side of the side beam 103 away from the main placement area 102. The main body of the connector 106 extends laterally and is fixedly connected to the side beam 103. The end of the connector 106 away from the adjacent connector 106 extends in the direction away from the main placement area 102. Several connection holes are provided on the connector 106. This type of connector 106 can not only protect the protruding adapter 3021, but also effectively improve the structural strength of the side beam 103.

[0075] According to an embodiment of the present invention, in another aspect, a battery pack is provided, which includes: the above-mentioned cell housing device and a cell 5, wherein the cell 5 is disposed in the main placement area 102 of the cell housing device.

[0076] In this embodiment, the battery pack also includes a cover for sealing the cell housing.

[0077] In this embodiment, the battery pack also includes a control structure 4, which is disposed in the secondary placement area 101 of the cell housing device, and the cell 5 is connected to the control structure 4.

[0078] According to an embodiment of the present invention, in another aspect, a vehicle is provided, which includes: the above-described cell housing device, or the above-described battery pack.

[0079] In this embodiment, "vehicle" can refer to large cars, small cars, special-purpose vehicles, etc. For example, according to vehicle type, the vehicle in this application can be a sedan, an off-road vehicle, a multi-purpose vehicle, an MPV, or other types of vehicles. Generally, a vehicle is equipped with wheels, a power source, and a transmission system between the wheels and the power source. The transmission system can transmit the power provided by the power source to the wheels, causing the wheels to rotate and thus driving the vehicle.

[0080] It should be noted that the type of power source of the vehicle is not limited in the embodiments of this application. For example, for fuel vehicles, the power source can refer to fuel engines such as gasoline engines and diesel engines; for electric vehicles, the power source can refer to electric motors; for hybrid vehicles, the power source can refer to engines or electric motors; for vehicles powered by other means, the power source can refer to devices that generate power.

[0081] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A cell housing device for holding the cells (5) of a battery pack, characterized in that, The cell housing device includes: The housing (1) has a main placement area (102) for placing the battery cell (5) inside. The housing (1) includes a bottom plate (104) and a side beam (103) surrounding the bottom plate (104). The side beam (103) corresponding to the main placement area (102) is provided with a receiving cavity (1031). The liquid cooling assembly (3) includes a liquid cooling plate (301) and a connecting structure (302). The liquid cooling plate (301) is connected to a coolant source through the connecting structure (302). The liquid cooling plate (301) is located at the bottom of the main placement area (102), and the connecting structure (302) is located in the receiving cavity (1031).

2. The cell housing device according to claim 1, characterized in that, One side of the side beam (103) of the housing (1) located at the rear of the main placement area (102) forms a mating surface (1033) that mates with the battery cell (5), and the receiving cavity (1031) is located inside the side beam (103).

3. The cell housing device according to claim 2, characterized in that, The liquid cooling plate (301) has a flow channel (3011) for the circulation of coolant inside. The liquid cooling plate (301) has an inlet and an outlet on the side of the side beam (103) located near the rear side of the main placement area (102). The inlet and outlet are spaced apart at the middle position of the side beam (103) located on the rear side of the main placement area (102).

4. The cell housing device according to claim 3, characterized in that, The adapter structure (302) includes two adapters (3021), one of which is connected to the liquid inlet and the other of which is connected to the liquid outlet. The two adapters (3021) are spaced apart. The side beam (103) located on the rear side of the main placement area (102) has two spaced-apart receiving cavities (1031) corresponding to the two adapters (3021).

5. The cell housing device according to claim 4, characterized in that, The side beam (103) located on the rear side of the main placement area (102) has a first opening (1034) communicating with the receiving cavity (1031) on the side corresponding to the liquid cooling plate (301). The side beam (103) located on the rear side of the main placement area (102) has a second opening (1035) communicating with the receiving cavity (1031) on the side away from the main placement area (102). The adapter (3021) includes a vertical adapter section (3022) and a longitudinal adapter section (3023). The lower end of the vertical adapter section (3022) is connected to the liquid cooling plate (301) through the first opening (1034), and the upper end of the vertical adapter section (3022) is correspondingly arranged with the second opening (1035) through the longitudinal adapter section (3023). The longitudinal adapter section (3023) is located inside the receiving cavity (1031). Alternatively, the end of the longitudinal transition section (3023) extends out from the second opening (1035), and the length of the portion of the longitudinal transition section (3023) extending out of the second opening (1035) is less than the length of the portion of the longitudinal transition section (3023) located in the receiving cavity (1031).

6. The cell housing device according to any one of claims 1 to 5, characterized in that, The battery pack includes a control structure (4) connected to the battery cell (5). The housing (1) also has a secondary placement area (101) for placing the control structure (4). The battery cell housing also includes an expansion beam (2). The expansion beam (2) is disposed inside the housing (1) and is used to separate the secondary placement area (101) and the main placement area (102). At least a portion of the middle part of the expansion beam (2) protrudes toward one side of the secondary placement area (101) and forms a protruding structure. The protruding structure forms a space for placing the battery cell (5) on one side of the main placement area (102).

7. The cell housing device according to claim 6, characterized in that, The expansion beam (2) includes a first transverse section (201), a second transverse section (202), a third transverse section (203), a first longitudinal section (204), and a second longitudinal section (205). One end of the second transverse section (202) is connected to the first transverse section (201) through the first longitudinal section (204), and the other end of the second transverse section (202) is connected to the third transverse section (203) through the second longitudinal section (205). The first longitudinal section (204), the second transverse section (202), and the second longitudinal section (205) form the protruding structure.

8. The cell housing device according to claim 7, characterized in that, Several reinforcing ribs (105) are provided on the side beam (103) located on one side of the rear of the main placement area (102). And / or, the cell housing further includes at least one connector (106) that is assembled to the side of the side beam (103) located on the rear side of the main placement area (102) away from the main placement area (102), the connector (106) being L-shaped.

9. A battery pack, characterized in that, include: The cell housing device according to any one of claims 1 to 8; The battery cell (5) is disposed in the main placement area (102) of the battery cell housing device.

10. A vehicle, characterized in that, include: The cell housing device according to any one of claims 1 to 8, or the battery pack according to claim 9.

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