Battery box and battery pack

Abstract

The utility model discloses a battery box and a battery pack. The battery box comprises a box body, the box body is provided with a battery containing cavity, and the two ends, in the Y-axis direction, of the battery containing cavity are each provided with a first cross beam; the second cross beam is parallel to the first cross beam and is assembled in the middle of the battery accommodating cavity; the distance H1 between the two first cross beams in the Y-axis direction and the width H2 of the second cross beams in the Y-axis direction meet the condition that H2 / H1 is larger than or equal to 0.05, and H2 / H1 is smaller than or equal to 0.1. According to the utility model, by setting the proportion of the width of the second cross beam to the distance between the two first cross beams, the torsion resistance and the structural strength of the box body are effectively improved, the situation that the structure of the box body is complex to install due to the fact that the battery accommodating cavity is too large is avoided, the structure of the box body is optimized, and the service life of the box body is prolonged. The volume of the box body is reduced, so that the energy density of the battery box is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a battery box and a battery pack. Background Art

[0002] With the development of the new energy industry, there is an increasing demand for improved energy density and range in battery packs. Energy density is a key performance indicator that directly affects battery range and is generally categorized into two dimensions: gravimetric energy density and volumetric energy density. However, existing battery packs typically feature a larger cavity to accommodate a sufficient number of batteries. This, in turn, complicates the structure, increasing the size and weight of the pack and resulting in lower energy density. Utility Model Content

[0003] In order to overcome at least one of the defects of the above-mentioned prior art, the present application provides a battery box that can optimize the structure of the box body, reduce the volume of the box body, and thereby effectively improve the energy density of the battery box.

[0004] According to an embodiment of the present application, a battery box includes: a box body, which is provided with a battery accommodating cavity, and a first crossbeam is provided at both ends of the battery accommodating cavity along the Y-axis direction; a second crossbeam, which is parallel to the first crossbeam and is assembled in the middle of the battery accommodating cavity; wherein the spacing H1 between the two first crossbeams in the Y-axis direction and the width H2 of the second crossbeam in the Y-axis direction satisfy: H2 / H1 is greater than or equal to 0.05, and H2 / H1 is less than or equal to 0.1.

[0005] In this battery box, by setting the distance H1 between the two first beams and the width H2 of the second beam to satisfy: H2 / H1 is greater than or equal to 0.05, and H2 / H1 is less than or equal to 0.1, the torsional resistance and structural strength of the box are effectively improved, and the structural installation complexity of the box due to the excessive size of the battery accommodating cavity is avoided, the structure of the box is optimized, the volume of the box is reduced, and the energy density of the battery box is effectively improved.

[0006] According to some embodiments of the present application, the box body includes a bottom plate, and a first side plate is provided at both ends of the bottom plate along the Y-axis direction, and a second side plate is provided at both ends of the bottom plate along the X-axis direction, so that the first side plate, the second side plate and the bottom plate form the battery accommodating cavity.

[0007] According to some embodiments of the present application, at least one first cooling channel is further included, and the first cooling channel is arranged in the base plate.

[0008] According to some embodiments of the present application, the second side plate includes a enclosure section extending along the Z-axis direction and a flow channel section extending along the X-axis direction, one end of the flow channel section is connected to the enclosure section, the bottom plate is connected to the other end of the flow channel section, and at least one second cooling flow channel is arranged in the flow channel section.

[0009] According to some embodiments of the present application, the second side plate is provided with a liquid cooling interface, the liquid cooling interface is connected to the second cooling channel, and the second cooling channel is connected to the first cooling channel.

[0010] According to some embodiments of the present application, a third cooling channel is provided in the enclosure section, the liquid cooling interface is in communication with the third cooling channel, and the third cooling channel is in communication with the second cooling channel.

[0011] According to some embodiments of the present application, a plurality of seals are further included, and the seals are sealed at both ends of the flow channel section and / or the bottom plate along the Y-axis direction.

[0012] According to some embodiments of the present application, a plurality of heating grooves are further included, and the heating grooves are distributed on the surface of the flow channel section and / or the bottom plate close to the battery accommodating cavity.

[0013] According to some embodiments of the present application, the first side panel and the first crossbeam are spaced apart and form an equipment accommodating cavity.

[0014] According to some embodiments of the present application, at least one longitudinal beam is connected between the second transverse beam and the first transverse beam, and the longitudinal beam and the bottom plate are integrally formed.

[0015] Based on the same inventive concept, the present application also proposes a battery pack, including the battery box as described above.

[0016] In summary, the battery box provided by this application has the following technical effects:

[0017] By setting the spacing H1 between the two first beams and the width H2 of the second beam to satisfy: H2 / H1 is greater than or equal to 0.05, and H2 / H1 is less than or equal to 0.1, the torsional resistance and structural strength of the box are effectively improved, and the complicated structural installation of the box due to the excessive size of the battery accommodating cavity is avoided. The structure of the box is optimized, the volume of the box is reduced, and the energy density of the battery box is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a battery box according to an embodiment of the present application;

[0019] Figure 2This is another structural schematic diagram of the battery box according to an embodiment of the present application;

[0020] Figure 3 for Figure 2 AA direction cross-sectional view;

[0021] Figure 4 This is an exploded view of the battery box according to an embodiment of the present application.

[0022] The meanings of the reference numerals are as follows:

[0023] 1. Box body; 11. Battery accommodating cavity; 12. Equipment accommodating cavity; 2. First crossbeam; 3. Second crossbeam; 4. Bottom plate; 41. First cooling channel; 5. First side panel; 6. Second side panel; 61. Enclosure section; 62. Channel section; 63. Second cooling channel; 7. Seal; 8. Heating groove; 9. Longitudinal beam. DETAILED DESCRIPTION

[0024] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0027] See Figure 1The present application discloses a battery box. The battery box includes a box body 1, a first crossbeam 2, and a second crossbeam 3. In some embodiments, the box body 1 is provided with a battery accommodating cavity 11, and the battery accommodating cavity 11 is provided with a first crossbeam 2 at both ends along the Y-axis. The second crossbeam 3 is parallel to the first crossbeam 2 and is assembled in the middle of the battery accommodating cavity 11. The spacing H1 between the two first crossbeams 2 in the Y-axis direction and the width H2 of the second crossbeam 3 in the Y-axis direction satisfy: H2 / H1 is greater than or equal to 0.05, and H2 / H1 is less than or equal to 0.1. Preferably, by setting the spacing H1 between the two first beams 2 and the width H2 of the second beam 3 to satisfy: H2 / H1 is greater than or equal to 0.05, and H2 / H1 is less than or equal to 0.1, the torsional resistance and structural strength of the box body 1 are effectively improved, and the structural installation of the box body 1 is complicated due to the battery accommodating cavity 11 being too large, the structure of the box body 1 is optimized, the volume of the box body 1 is reduced, and the energy density of the battery box is effectively improved.

[0028] Optionally, the Y-axis direction is one of the length direction, width direction and height direction of the box body 1. Figure 1 、 Figure 2 and Figure 4 , the Y-axis direction is the length direction of the box body 1, and correspondingly, the X-axis direction is the width direction of the box body 1, and the Z-axis direction is the height direction of the box body 1. In this embodiment, the two first crossbeams 2 and the two second crossbeams 3 are both extended along the X-axis direction, so that the first crossbeam 2 and the second crossbeam 3 are both connected to the two side walls of the battery accommodating cavity 11 along the X-axis direction. Optionally, the two first crossbeams 2 are respectively fixedly connected to the two ends of the battery accommodating cavity 11 along the Y-axis direction, and the second crossbeam 3 is assembled in the middle of the battery accommodating cavity 11, so that the spacing between the second crossbeam 3 and the two first crossbeams 2 is equal, thereby uniformly improving the torsion resistance and structural strength of the box body 1.

[0029] See Figure 2 and Figure 4In some embodiments, the box body 1 includes a bottom plate 4, and a first side plate 5 is provided at both ends of the bottom plate 4 along the Y-axis direction, and a second side plate 6 is provided at both ends of the bottom plate 4 along the X-axis direction, so that the first side plate 5, the second side plate 6, and the bottom plate 4 enclose the battery accommodating cavity 11. Optionally, two first side plates 5 arranged opposite to each other in the Y-axis direction and two second side plates 6 arranged opposite to each other in the X-axis direction are respectively arranged around the four sides of the bottom plate 4, or alternatively, two first side plates 5 arranged opposite to each other in the Y-axis direction and two second side plates 6 arranged opposite to each other in the X-axis direction are connected to form a frame structure and connected to the bottom plate 4, so that the first side plates 5, the second side plates 6, and the bottom plate 4 enclose the battery accommodating cavity 11. In this embodiment, the two ends of the first crossbeam 2 along the X-axis direction are fixedly connected to the two second side plates 6, and the two ends of the second crossbeam 3 along the X-axis direction are also fixedly connected to the two second side plates 6, so that the first crossbeam 2 and the second crossbeam 3 span the entire battery accommodating cavity 11 along the X-axis direction, thereby effectively improving the torsional resistance and structural strength of the entire box body 1. Furthermore, the first crossbeam 2 and the second crossbeam 3 can be fixedly connected to the second side plates 6 by bolt connection, riveting and welding.

[0030] See Figure 2 and Figure 3 In some embodiments, at least one first cooling channel 41 is further included, and the first cooling channel 41 is arranged in the base plate 4. Optionally, the first cooling channel 41 is curved in the base plate 4, and when the refrigerant flows through the first cooling channel 41, it can take away the heat in the battery accommodating cavity 11; optionally, when there are multiple first cooling channels 41 in the base plate 4, multiple first cooling channels 41 can be evenly distributed in the base plate 4 to provide a uniform cooling effect to the battery accommodating cavity 11 and avoid temperature differences; preferably, the base plate 4 is made of aluminum profile, and the high degree of freedom of cross-sectional design of aluminum profile is utilized to form a closed cavity structure in the base plate 4 as the first cooling channel 41, so as to integrate the cooling channel into the base plate 4, optimize the structure of the box body 1, and reduce the volume of the box body 1. Furthermore, a number of reinforcing ribs can be provided in the closed cavity structure in the base plate 4, so that the closed cavity structure in the base plate 4 forms the curved first cooling channel 41, thereby optimizing the flow rate of the refrigerant in the first cooling channel 41 and the area through which it flows.

[0031] See Figure 2 、 Figure 3 and Figure 4In some embodiments, the second side plate 6 includes a panel section 61 extending along the Z-axis direction and a flow channel section 62 extending along the X-axis direction. One end of the flow channel section 62 is connected to the panel section 61, and the bottom plate 4 is connected to the other end of the flow channel section 62. At least one second cooling channel 63 is provided in the flow channel section 62. That is, the panel section 61 and the flow channel section 62 form an "L"-shaped structure, and the two "L"-shaped structures are symmetrically connected to the two ends of the bottom plate 4 along the X-axis direction. Optionally, the panel section 61 and the flow channel section 62 are integrally formed. In this embodiment, the bottom plate 4 and the two flow channel sections 62 together constitute the bottom of the box body 1, that is, the bottom plate 4 and the two flow channel sections 62 are all located at the bottom of the battery accommodating cavity 11, and can simultaneously cool the battery accommodating cavity 11 through the first cooling channel 41 and the second cooling channel 63. 1 for heat dissipation, optionally, the first cooling channel 41 and the second cooling channel 63 are independent of each other, driving the first cooling channel 41 and the second cooling channel 63 to have a refrigerant flow, thereby improving the heat dissipation effect of the battery accommodating cavity 11; optionally, the first cooling channel 41 and the second cooling channel 63 are interconnected so that the refrigerant can flow through the second cooling channel 63 and the first cooling channel 41 in sequence, simplifying the refrigerant supply process and providing a uniform cooling effect to the battery accommodating cavity 11 to avoid temperature differences. Furthermore, the second side panel 6 can be made of aluminum profile, and a closed cavity structure is formed in the flow channel section 62 as the second cooling flow channel 63, so that the second cooling flow channel 63 is integrated into the flow channel section 62, the structure of the box body 1 is optimized, and the volume of the box body 1 is reduced. Furthermore, a number of reinforcing ribs can be provided in the closed cavity structure in the flow channel section 62, so that the closed cavity structure in the bottom plate 4 forms a curved second cooling flow channel 63, thereby optimizing the flow rate of the refrigerant in the second cooling flow channel 63 and the area through which it flows.

[0032] In some embodiments, the second side plate 6 is provided with a liquid cooling interface, the liquid cooling interface is connected to the second cooling channel 63, and the second cooling channel 63 is connected to the first cooling channel 41. Preferably, the liquid cooling interface is a water inlet and outlet, that is, the refrigerant enters the second cooling channel 63 through the liquid cooling interface on the liquid inlet side, and then flows through the first cooling channel 41 and the other second cooling channel 63 in sequence, and then flows out of the liquid cooling interface on the liquid outlet side, simplifying the refrigerant supply process and providing a uniform cooling effect to the battery accommodating cavity 11 to avoid temperature differences. In addition, the liquid cooling interface is provided on the second side plate 6 on the outside of the bottom plate 4, which is convenient for assembly and can effectively reduce assembly costs. Optionally, the liquid cooling interface is provided on the channel section 62 so that the outside can directly communicate with the second cooling channel 63 in the channel section 62 through the liquid cooling interface; optionally, the liquid cooling interface is provided on the enclosure section 61, wherein the liquid cooling interface can be connected to the second cooling channel 63 through external or internal pipes and other components.

[0033] In some embodiments, a third cooling channel is provided in the enclosure section 61, the liquid cooling interface is in communication with the third cooling channel, and the third cooling channel is in communication with the second cooling channel 63. That is, heat can be dissipated from the battery accommodating cavity 11 simultaneously through the first cooling channel 41, the second cooling channel 63, and the third cooling channel. The first cooling channel 41 and the second cooling channel 63 are located at the bottom of the battery accommodating cavity 11, and the third cooling channel is located at the side of the battery accommodating cavity 11. This allows the bottom and side surfaces of the batteries accommodated in the battery accommodating cavity 11 to be cooled, thereby increasing the cooling area and further optimizing the cooling effect.

[0034] See Figure 3 and Figure 4In some embodiments, a plurality of seals 7 are further included, and the seals 7 are sealed at both ends of the flow channel section 62 and / or the bottom plate 4 along the Y-axis direction. Optionally, the base plate 4 is made by an aluminum extrusion process so that a cavity structure with an opening in the Y-axis direction is formed in the base plate 4, and then the seal 7 is used to seal the two ends of the base plate 4 along the Y-axis direction so that the cavity structure in the base plate 4 is in a closed state, thereby realizing the formation of the first cooling channel 41 in the closed cavity structure; similarly, the second side plate 6 is also made by an aluminum extrusion process so that a cavity structure with an opening in the Y-axis direction is formed in the channel section 62, and then the seal 7 is used to seal the two ends of the channel section 62 along the Y-axis direction, thereby realizing the formation of the second cooling channel 63 in the closed cavity structure; preferably, the channel section 62 is welded to the base plate 4 so that the second side plate 6 and the base plate 4 are connected to form a stable whole, therefore, one or more seals 7 can be used to seal the same end of the channel section 62 and the base plate 4 in the Y-axis direction to reduce the number of parts; optionally, the seal 7 is a plug.

[0035] See Figure 2 and Figure 4 In some embodiments, a plurality of heating grooves 8 are further included, and the heating grooves 8 are distributed on the surface of the flow channel section 62 and / or the bottom plate 4 on the side close to the battery accommodating cavity 11. Optionally, the heating grooves 8 are used to install a PDC heater, so that the box body 1 can provide heat to the battery accommodating cavity 11 or keep it warm, so that the box body 1 is also suitable for cold environments, thereby driving the battery pack to operate normally under various working conditions; optionally, a plurality of the heating grooves 8 are evenly distributed on the bottom of the box body 1 composed of the bottom plate 4 and the two flow channel sections 62, so that PDC heaters can be evenly installed on the bottom of the box body 1, which can evenly provide heat to the battery accommodating cavity 11 or keep it warm.

[0036] See Figure 1 、 Figure 2 and Figure 4 In some embodiments, the first side panel 5 is spaced apart from the first crossbeam 2 to form a device accommodating cavity 12. Optionally, at least one of the first side panels 5 is spaced apart from the adjacent first crossbeam 2 to form a device accommodating cavity 12, so that the device accommodating cavity 12 and the battery accommodating cavity 11 are formed in the box body 1, wherein the battery accommodating cavity 11 is used to accommodate batteries and has a larger volume than the device accommodating cavity 12. The device accommodating cavity 12 is used to assemble other devices to optimize the layout in the box body 1.

[0037] See Figure 1 、 Figure 2 and Figure 4 In some embodiments, at least one longitudinal beam 9 is connected between the second crossbeam 3 and the first crossbeam 2, and the longitudinal beam 9 is integrally formed with the bottom plate 4. In this embodiment, the longitudinal beam 9 and the bottom plate 4 are integrally formed, which can improve the rigidity and strength of the bottom plate 4 and the longitudinal beam 9, so that the bottom plate 4 as a load-bearing component can be made of lightweight materials such as aluminum profiles, aluminum alloys, etc., thereby reducing the overall deadweight of the box body 1. Furthermore, the longitudinal beam 9 is connected to the second crossbeam 3 or the first crossbeam 2 through a connecting piece. Preferably, the connecting piece is locked to the longitudinal beam 9 and the first crossbeam 2 by bolts, and another connecting piece is locked to the longitudinal beam 9 and the second crossbeam 3 by bolts. So that the longitudinal beam 9 is fixedly connected between the second cross beam 3 and the first cross beam 2, the force transmission between the second cross beam 3 and the first cross beam 2 is optimized, and the torsional resistance and structural strength of the box body 1 are improved from the X-axis direction and the Y-axis direction. Furthermore, when a cover body is covered on the box body, the longitudinal beam 9 can also effectively transmit the force of the cover body covered on the box body to the second cross beam 3 and the first cross beam 2, further improving the torsional resistance and structural strength of the box body 1 from multiple dimensions, and optimizing the structure and deadweight of the box body 1.

[0038] In some embodiments, a battery pack includes the battery box described above.

[0039] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4In some embodiments, the box body 1 is composed of the first side panel 5, the second side panel 6 and the bottom panel 4. Preferably, the two first side panels 5 are arranged at both ends of the bottom panel 4 along the Y-axis direction, and the two second side panels 6 are arranged at both ends of the bottom panel 4 along the X-axis direction, so that the first side panel 5, the second side panel 6 and the bottom panel 4 together form the battery accommodating cavity 11. Preferably, the second side plate 6 is an "L"-shaped structure, that is, the second side plate 6 is composed of a panel section 61 extending along the Z-axis direction and a flow channel section 62 extending along the X-axis direction, the flow channel section 62 is flush with the bottom plate 4, and the flow channel section 62 is welded to the bottom plate 4, so that the bottom plate 4 and the two flow channel sections 62 together constitute the bottom of the box body 1. Furthermore, the bottom plate 4 is made of aluminum extrusion technology to form the first cooling channel 41 in the bottom plate 4. Similarly, the second side plate 6 is also made of aluminum extrusion technology, and the second cooling channel 63 is formed in the flow channel section 62, so that the cooling channel is integrated into the box body 1, thereby improving the integration of the box body 1. Preferably, the second side plate 6 is provided with a liquid cooling interface, and the liquid cooling interface is connected to the first cooling channel 41 through the second cooling channel 63. That is, the refrigerant enters the second cooling channel 63 through the liquid cooling interface on the liquid inlet side, and then flows through the first cooling channel 41 and the other second cooling channel 63 in sequence, and then flows through the liquid cooling interface on the liquid outlet side, simplifying the refrigerant supply process, and the liquid cooling interface is opened on the second side plate 6 outside the base plate 4, which is convenient for assembly and can effectively reduce the assembly cost; preferably, the battery accommodating cavity 11 is provided with a first beam 2 at both ends along the Y-axis direction; the second beam 3 is parallel to the first beam 2 and is assembled in the middle of the battery accommodating cavity 11; wherein, the spacing H1 between the two first beams 2 in the Y-axis direction and the width H2 of the second beam 3 in the Y-axis direction satisfy: H2 / H1 is greater than or equal to 0.05, and H2 / H1 is less than or equal to 0.1, preferably, the H1 is 1440mm, and the H2 is 135mm.Optionally, the two ends of the second crossbeam 3 along the X-axis direction and the two ends of the first crossbeam 2 along the X-axis direction are respectively fixedly connected to the corresponding enclosure sections 61 of the second side panels 6, and the bottom ends of the second crossbeam 3 and the first crossbeam 2 are both fixedly connected to the bottom of the box body 1 composed of the bottom plate 4 and the two flow channel sections 62; preferably, by setting the spacing H1 between the two first crossbeams 2 and the width H2 of the second crossbeam 3 to meet: H2 / H1 is greater than or equal to 0.05, and H2 / H1 is less than or equal to 0.1, thereby effectively improving the torsional resistance and structural strength of the box body 1, and further At least one longitudinal beam 9 is connected between the second crossbeam 3 and the first crossbeam 2. The longitudinal beam 9 and the bottom plate 4 are integrally formed so that the bottom plate 4 has high rigidity and strength. The bottom plate 4 can be made of lightweight materials such as aluminum profiles, aluminum alloys, etc., thereby reducing the overall weight of the box body 1. The longitudinal beam 9 is fixedly connected between the second crossbeam 3 and the first crossbeam 2, so that the torsional resistance and structural strength of the box body 1 can be improved in the X-axis direction and the Y-axis direction, and the structure and weight of the box body 1 can be optimized, thereby improving the energy density of the battery box from multiple dimensions.

[0040] The technical means disclosed in the present invention are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A battery box, characterized in that: include: A box body (1), the box body (1) being provided with a battery accommodating cavity (11), and both ends of the battery accommodating cavity (11) along the Y-axis direction being provided with a first crossbeam (2); a second crossbeam (3), the second crossbeam (3) being parallel to the first crossbeam (2) and being assembled in the middle of the battery accommodating cavity (11); The spacing H1 between the two first beams (2) in the Y-axis direction and the width H2 of the second beam (3) in the Y-axis direction satisfy: H2 / H1 is greater than or equal to 0.05, and H2 / H1 is less than or equal to 0.

1.

2. The battery box according to claim 1, characterized in that: The box body (1) comprises a bottom plate (4), wherein both ends of the bottom plate (4) along the Y-axis direction are provided with first side plates (5), and both ends of the bottom plate (4) along the X-axis direction are provided with second side plates (6), so that the first side plates (5), the second side plates (6) and the bottom plate (4) enclose the battery accommodating cavity (11).

3. The battery box according to claim 2, characterized in that: It also includes at least one first cooling channel (41), wherein the first cooling channel (41) is arranged in the base plate (4).

4. The battery box according to claim 3, characterized in that: The second side plate (6) comprises a panel section (61) extending in the Z-axis direction and a flow channel section (62) extending in the X-axis direction, one end of the flow channel section (62) is connected to the panel section (61), the bottom plate (4) is connected to the other end of the flow channel section (62), and at least one second cooling flow channel (63) is provided in the flow channel section (62).

5. The battery box according to claim 4, characterized in that: The second side plate (6) is provided with a liquid cooling interface, the liquid cooling interface is in communication with the second cooling channel (63), and the second cooling channel (63) is in communication with the first cooling channel (41).

6. The battery box according to claim 4, characterized in that: A third cooling channel is provided in the enclosure section (61), the liquid cooling interface is in communication with the third cooling channel, and the third cooling channel is in communication with the second cooling channel (63).

7. The battery box according to claim 4, characterized in that: It also includes a plurality of sealing members (7), which are sealed at both ends of the flow channel section (62) and / or the bottom plate (4) along the Y-axis direction.

8. The battery box according to claim 4, characterized in that: It also includes a plurality of heating grooves (8), which are distributed on the surface of the flow channel section (62) and / or the bottom plate (4) on a side close to the battery accommodating cavity (11).

9. The battery box according to any one of claims 2 to 8, characterized in that: The first side plate (5) and the first crossbeam (2) are spaced apart and form an equipment accommodating cavity (12).

10. The battery box according to any one of claims 2 to 8, characterized in that: At least one longitudinal beam (9) is connected between the second transverse beam (3) and the first transverse beam (2), and the longitudinal beam (9) and the bottom plate (4) are integrally formed.

11. A battery pack, characterized in that: Comprising a battery box as described in any one of claims 1-10.

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