Battery box and battery pack

Abstract

The utility model provides a battery box and a battery pack, the battery box comprises a bottom plate, a frame, a confluence assembly and a blocking strip, the bottom plate and the frame are matched to define a mounting cavity, the bottom plate is internally provided with a plurality of liquid cooling flow channels for liquid cooling media to circulate, at least one end of the bottom plate along a first direction is provided with a groove structure, and the groove structure is communicated with the liquid cooling flow channels; the confluence assembly is arranged on the bottom plate and communicates with the liquid cooling flow channel; the blocking strip comprises a first part arranged in the groove structure and further comprises a second part extending into the liquid cooling flow channel, and the second part is used for blocking the liquid cooling flow channel. According to the battery box and the battery pack provided by the utility model, the problem that the sealing performance is influenced due to the fact that the plug of the battery box in the prior art is easy to open can be solved.

Description

Technical Field

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

[0002] In order to provide a stable output effect and avoid thermal runaway, current batteries mostly use air cooling and liquid cooling to control temperature. Compared with air cooling, liquid cooling has a more stable temperature control effect. Therefore, battery systems in the prior art mostly use liquid cooling for cooling.

[0003] In the prior art, during the molding process of the battery box, a liquid cooling plate with a liquid cooling channel is often welded to form the bottom plate structure of the battery box, and then the frame is welded in sequence to form the battery box. In order to block the liquid cooling channel, a plug structure is often used for sealing.

[0004] However, in the prior art, the plug is partially located inside the liquid cooling channel, and the plug and the liquid cooling plate are welded at the end side of the liquid cooling plate to achieve the blocking of the liquid cooling channel. With this structural setting, the welding point between the plug and the liquid cooling plate is easily bumped, and then the plug and the liquid cooling plate are unwelded, affecting the sealing of the liquid cooling plate.

[0005] As can be seen from the above, the plug of the current battery box is prone to open welding, which affects the sealing performance. Utility Model Content

[0006] The main purpose of the utility model is to provide a battery box and a battery pack to solve the problem in the prior art that the plug of the battery box is prone to open welding, thereby affecting the sealing.

[0007] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a battery box is provided, which includes a base plate and a frame, the base plate and the frame cooperate to form an installation cavity, the interior of the base plate is provided with a plurality of liquid cooling channels for liquid cooling medium to circulate, at least one end of the base plate along a first direction is provided with a groove structure, and the groove structure is connected to the liquid cooling channel; a busbar assembly, the busbar assembly is arranged on the base plate and the inner cavity of the busbar assembly is connected to the liquid cooling channel; the blocking strip includes a first part arranged inside the groove structure, and the blocking strip also includes a second part extending into the interior of the liquid cooling channel, wherein the second part is used to block the liquid cooling channel.

[0008] Furthermore, the blocking strip includes an abutment portion, at least a portion of which is arranged inside the groove structure, the abutment portion is arranged on the side surface inside the groove structure and abuts against the inner wall surface of the groove structure, and the upper surface of the abutment portion is flush with the upper surface of the bottom plate; a plugging portion, which is arranged on the side surface of the abutment portion facing the liquid-cooling channel, and extends to the inside of the liquid-cooling channel for sealing the liquid-cooling channel.

[0009] Furthermore, the blocking strip further comprises a mounting portion, which is arranged on a side of the abutting portion away from the blocking portion, and is arranged outside the groove structure, and is abutted against the bottom plate.

[0010] Further, the abutting portion and the bottom plate are friction stir welded; and / or the upper surface of the mounting portion is flush with the upper surface of the bottom plate, and the mounting portion and the bottom plate are friction stir welded.

[0011] Furthermore, the battery box also includes a baffle, which is arranged on the side of the frame away from the installation cavity, and has a hollow portion; a water nozzle, which is arranged on the convergence assembly, one end of the water nozzle is connected to the inner cavity of the convergence assembly, and the other end of the water nozzle passes through the frame and is exposed through the hollow portion.

[0012] Furthermore, the top of the baffle has a first flange bent toward one side of the installation cavity, the frame has a second flange bent toward a side away from the installation cavity, and the first flange and the second flange are connected by a fastener.

[0013] Furthermore, a first mounting hole is provided on the top surface of the mounting portion, a bottom flange is provided at the bottom of the baffle, a second mounting hole is provided on the bottom flange, and the battery box also includes a fixing member, and the first mounting hole and the second mounting hole are connected by the fixing member.

[0014] Further, two ends of the mounting portion along a second direction perpendicular to the first direction extend beyond the bottom plate.

[0015] Furthermore, there are multiple hollow parts, and the multiple hollow parts are arranged at intervals along a second direction perpendicular to the first direction. The baffle has multiple reinforcing ribs on the side facing the frame, and each hollow part is provided with at least one reinforcing rib on both sides along the second direction; along the height direction of the battery box, the top of the baffle extends with a first flange in a direction close to the frame, and the bottom of the baffle extends with a bottom flange in a direction close to the frame, the top of the reinforcing rib is connected to the first flange, and the bottom of the reinforcing rib is connected to the bottom flange.

[0016] According to another aspect of the utility model, a battery pack is provided, and the battery pack includes the above-mentioned battery box.

[0017] Applying the technical solution of the utility model, the battery box includes a base plate, a frame, a busbar, and a blocking strip. The base plate and the frame cooperate to form an installation cavity. The interior of the base plate has a plurality of liquid cooling channels for circulating liquid cooling medium. A groove structure is provided at at least one end of the base plate along a first direction, and the groove structure is connected to the liquid cooling channel. The busbar is arranged on the base plate and is connected to the liquid cooling channel. At least a part of the blocking strip is arranged inside the groove structure. The blocking strip includes a first part arranged inside the groove structure, and the blocking strip also includes a second part extending into the interior of the liquid cooling channel, wherein the second part is used to block the liquid cooling channel.

[0018] As can be seen from the above, at least a portion of the blocking strip used in the present application cooperates with the groove structure to realize the installation of the blocking strip on the bottom plate. The arrangement of the groove structure facilitates the installation and positioning of the blocking strip, which is conducive to improving assembly efficiency. In addition, compared with the welding position between the blocking strip and the bottom plate being located on the side of the bottom plate, the welding position is located between the blocking strip and the bottom plate, which realizes the protection of the welding position and solves the problem in the prior art that the plug of the battery box is prone to open welding, thereby affecting the sealing.

[0019] In the present application, friction stir welding is adopted between the blocking strip and the base plate, and positioning and installation are achieved by setting a groove structure, which is not only convenient for friction stir welding, but also conducive to increasing the welding stroke, thereby improving the welding strength and ensuring the sealing effect of the blocking strip.

[0020] The battery box of the present application adopts a baffle plate set on the outside of the frame. During the movement, installation and transportation of the battery box, the baffle plate can protect the frame and the bottom plate to ensure that the frame and the bottom plate are not directly affected when they are bumped, thereby ensuring the stability of the connection between the bottom plate and the frame, and further ensuring the safety of the use of the battery box.

[0021] The present application achieves water nozzle avoidance by setting a hollow portion on the baffle to facilitate the normal operation of the liquid cooling system, and the setting of the hollow portion is conducive to achieving lightweight. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0023] Figure 1 A three-dimensional structural schematic diagram of a battery box of the utility model is shown;

[0024] Figure 2 A three-dimensional structural schematic diagram of the baffle of the utility model is shown;

[0025] Figure 3 A schematic diagram showing the connection structure of the blocking strip and the bottom plate of the utility model is shown;

[0026] Figure 4 A three-dimensional structural schematic diagram of a battery box without a baffle of the utility model is shown;

[0027] Figure 5 A three-dimensional structural schematic diagram of the blocking strip of the utility model is shown;

[0028] Figure 6 A cross-sectional view showing the connection between the blocking strip and the bottom plate of the utility model;

[0029] Figure 7A three-dimensional structural schematic diagram of the blocking strip of the utility model is shown, wherein there is no mounting portion;

[0030] Figure 8 A schematic diagram of the connection structure of the blocking strip and the bottom plate of the utility model is shown, wherein the blocking strip has no mounting portion.

[0031] The above drawings include the following reference numerals:

[0032] 10. Bottom plate; 110. Liquid hole; 120. Liquid cooling channel; 20. Frame; 210. Front panel; 211. Second flange; 220. Rear panel; 30. Baffle; 301. Hollow portion; 310. First flange; 320. Bottom flange; 321. Second mounting hole; 330. Reinforcing rib; 40. Water nozzle; 50. Blocking strip; 510. Mounting portion; 511. First mounting hole; 520. Abutment portion; 530. Blocking portion. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0034] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0035] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0036] Embodiment 1

[0037] In order to solve the problem in the prior art that the plug of the battery box is prone to open welding, thus affecting the sealing, this embodiment provides a battery box.

[0038] like Figures 1 to 8As shown, the battery box includes a base plate 10, a frame 20, a busbar assembly and a blocking strip 50. The base plate 10 and the frame 20 cooperate to form an installation cavity. The interior of the base plate 10 has a plurality of liquid cooling channels 120 for circulating liquid cooling medium. A groove structure is provided at at least one end of the base plate 10 along a first direction, and the groove structure is connected to the liquid cooling channel 120. The busbar assembly is arranged on the base plate 10 and is connected to the liquid cooling channel 120. The blocking strip 50 includes a first portion arranged inside the groove structure, and the blocking strip 50 also includes a second portion extending into the interior of the liquid cooling channel 120, wherein the second portion is used to block the liquid cooling channel 120.

[0039] Specifically, the first part of the blocking strip 50 used in the present application cooperates with the groove structure to realize the installation of the blocking strip 50 on the bottom plate 10. The arrangement of the groove structure not only facilitates the installation of the blocking strip 50 but also facilitates the positioning, which is conducive to improving the assembly efficiency. In addition, compared with the welding position between the blocking strip and the bottom plate being located on the side of the bottom plate 10, the welding position is located between the blocking strip 50 and the bottom plate 10, which realizes the protection of the welding position and solves the problem that the plug of the battery box in the prior art is prone to open welding, which affects the sealing.

[0040] like Figure 1 As shown, the first direction is the X direction shown in the figure, the second direction is the Y direction shown in the figure, and the height direction of the battery box is the Z direction shown in the figure.

[0041] The confluence component has an inner cavity for accommodating a liquid cooling medium, and the inner cavity is connected to the liquid cooling channel 120 to enable the liquid cooling medium to flow between the inner cavity of the confluence component and the liquid cooling channel 120 .

[0042] Furthermore, the base plate 10 has a liquid hole 110 connected to the liquid cooling channel 120, and the bottom surface of the manifold assembly has a through hole connected to its inner cavity. The through hole is connected to the liquid hole 110, thereby realizing the connection between the inner cavity of the manifold assembly and the liquid cooling channel 120.

[0043] The embodiment of the present application does not limit the specific structural form of the busbar assembly. The busbar assembly is arranged above the base plate 10 and avoids the slot structure.

[0044] In this embodiment, the blocking strip 50 is used to block the liquid cooling channel 120, wherein when the liquid cooling channel 120 is provided with an opening only at one end of the base plate 10, the blocking strip 50 may be provided on only one side; when the liquid cooling channel 120 is provided with openings at both ends of the base plate 10, the blocking strip 50 is provided on both sides.

[0045] In this embodiment, the blocking strip 50 cooperates with the bottom plate 10 to block the liquid cooling channel 120. When the bottom plate 10 is formed by a liquid cooling plate, the groove structure can be set at one end of the bottom plate 10, or it can be set at both ends of the bottom plate 10; when the bottom plate 10 is formed by welding multiple liquid cooling plates along the second direction, the groove structure can be set at both ends of each liquid cooling plate, or the groove structure can be set at both ends of some liquid cooling plates and the groove structure can be set at one end of another part of the liquid cooling plates, wherein it can be understood that the end of the groove structure set at only one end can be the first end or the second end along the first direction, and the groove structures of multiple liquid cooling plates with groove structures set at only one end can be set at the same side or not at the same side.

[0046] like Figure 7 and Figure 8 As shown, the blocking strip 50 includes an abutment portion 520 and a plugging portion 530. At least a portion of the abutment portion 520 is arranged inside the groove structure. The abutment portion 520 is arranged on the side surface inside the groove structure and abuts against the inner wall surface of the groove structure. The upper surface of the abutment portion 520 is flush with the upper surface of the base plate 10. The plugging portion 530 is arranged on the side surface of the abutment portion 520 facing the liquid-cooling channel 120. The plugging portion 530 extends to the inside of the liquid-cooling channel 120 to seal the liquid-cooling channel 120.

[0047] Further, the abutting portion 520 extends along a second direction perpendicular to the first direction, and a plurality of plugging portions 530 are provided, and the plurality of plugging portions 530 are arranged at intervals along the second direction, wherein the plurality of plugging portions 530 are arranged one-to-one correspondingly to the plurality of liquid-cooling channels 120 .

[0048] Furthermore, the structures of the abutting portion 520 and the plugging portion 530 can achieve blocking of the liquid cooling channel 120 and simultaneously complete the connection and fixation with the base plate 10 .

[0049] Among them, the abutment part 520 and the bottom plate 10 are stir-friction welded, the abutment part 520 cooperates with the groove structure to complete the installation with the bottom plate 10, the abutment part 520 and the bottom plate 10 are fixed by stir-friction welding, and the plugging part 530 extends into the interior of the liquid cooling channel 120 to complete the plugging of the liquid cooling channel 120, thereby preventing the liquid from leaking at the end of the liquid cooling channel 120. Therefore, the positioning installation achieved by setting the groove structure is not only conducive to facilitating the stir-friction welding between the plugging strip 50 and the bottom plate 10 and improving the stability of the connection; at the same time, the setting of the groove structure is conducive to increasing the welding stroke, thereby improving the welding strength and ensuring the sealing effect of the plugging strip 50.

[0050] In another embodiment, Figures 3 to 5 As shown, the blocking strip 50 further includes a mounting portion 510 , which is disposed on a side of the abutting portion 520 away from the blocking portion 530 , and is disposed outside the groove structure, and is in abutment with the bottom plate 10 .

[0051] The upper surface of the mounting portion 510 is flush with the upper surface of the base plate 10 , and the two are connected by means of friction stir welding.

[0052] The structures of the mounting portion 510 , the abutting portion 520 and the plugging portion 530 are used to seal the liquid cooling channel 120 .

[0053] Specifically, the mounting portion 510 is fixed to the base plate 10 by friction stir welding, the abutting portion 520 cooperates with the groove structure to complete the installation with the base plate 10, the abutting portion 520 and the base plate 10 are fixed by friction stir welding, and the plugging portion 530 extends into the interior of the liquid-cooling channel 120 to complete the plugging of the liquid-cooling channel 120, thereby preventing leakage from the end of the liquid-cooling channel 120; the mounting portion 510 is used to connect with the baffle 30 to improve the stability and strength of the overall installation.

[0054] In this embodiment, if Figures 1 to 6 As shown, the battery box provided in the embodiment of the present application also includes a baffle and a water nozzle. The baffle 30 is arranged on the side of the frame 20 away from the installation cavity, and the baffle 30 has a hollow portion 301; the water nozzle 40 is arranged on the convergence assembly, one end of the water nozzle 40 is connected to the inner cavity of the convergence assembly, and the other end of the water nozzle 40 passes through the frame 20 and is exposed through the hollow portion 301.

[0055] Specifically, the battery box of this embodiment adopts a baffle 30 set on the outside of the frame 20. During the movement, installation and transportation of the battery box, the setting of the baffle 30 can protect the frame 20 so that it will not directly act on the frame 20 when it is bumped, thereby ensuring the stability of the connection between the bottom plate 10 and the frame 20, and further ensuring the safety of the use of the battery box.

[0056] Among them, this embodiment enables the water nozzle 40 to extend through and connect with the liquid cooling pipeline outside the battery box by setting the hollow part 301 on the baffle 30, so as to facilitate the normal operation of the liquid cooling system. At the same time, the setting of the hollow part 301 is conducive to achieving lightweight.

[0057] Furthermore, the hollow portion 301 can buffer the external force by deformation when the baffle 30 is subjected to an external force.

[0058] The top surface of the blocking strip 50 has a first mounting hole 511 , the bottom of the baffle 30 is provided with a bottom flange 320 , and the bottom flange 320 has a second mounting hole 321 . The battery box also includes a fixing member, and the first mounting hole 511 and the second mounting hole 321 are connected by the fixing member.

[0059] Furthermore, the fixing member fixes the bottom flange 320 and the blocking strip 50 through the first mounting hole 511 and the second mounting hole 321, which is beneficial to increase the connection strength between the blocking strip 50 and the baffle 30. The baffle 30 of this embodiment is respectively connected and fixed to the frame 20 and the blocking strip 50, which can further increase the stability of the baffle 30 setting and is beneficial to increase the overall strength of the battery box.

[0060] The fixing member may be a matching structure of a bolt and a screw.

[0061] Further, at least a portion of the mounting portion 510 is located outside the mounting cavity, and the mounting portion 510 located outside the mounting cavity has a first mounting hole 511, so that the baffle 30 located outside the mounting cavity can be connected to the mounting portion 510. In this embodiment, a plurality of first mounting holes 511 are provided, and the plurality of first mounting holes 511 are spaced apart along a second direction perpendicular to the first direction, and the strength of the connection between the baffle 30 and the blocking strip 50 is further enhanced by the structure of the plurality of first mounting holes 511.

[0062] Furthermore, both ends of the mounting portion 510 along a second direction perpendicular to the first direction extend beyond the bottom plate 10 .

[0063] Furthermore, in order to adapt to battery boxes of different sizes, the base plate 10 can be formed by welding multiple liquid cooling plates, wherein the multiple liquid cooling plates include two or more, which can be selected according to the size of the liquid cooling plate and the size of the base plate, and the multiple liquid cooling plates are arranged along the second direction.

[0064] In this embodiment, taking the example of a base plate consisting of two liquid cooling plates, two blocking bars 50 are provided along the second direction perpendicular to the first direction, and the mounting portions 510 of the two blocking bars 50 are connected, and the extension length of the mounting portion 510 on the side of the connection position of the blocking bar 50 is smaller than the extension length of the mounting portion 510 on the side of the blocking bar 50 away from the connection position.

[0065] In one implementation of the present embodiment, two blocking bars 50 are used in conjunction with two liquid cooling plates, so that the blocking bars 50 are respectively adapted to the liquid cooling plates to seal the liquid cooling channel 120 to avoid leakage.

[0066] It can be understood that two blocking strips 50 are provided at one end of the base plate 10. When both ends of the liquid cooling channel 120 on the base plate 10 need to be blocked by blocking strips 50, a total of four blocking strips 50 are provided on the base plate 10. The four blocking strips 50 are used to block the liquid cooling channel 120 to avoid liquid leakage.

[0067] In this embodiment, along the first direction, the frame 20 includes a front panel 210 and a rear panel 220 that are spaced apart, and a baffle 30 is disposed on the front panel 210 and the rear panel 220. The baffle 30 is disposed on the front panel 210 and the rear panel 220 that are prone to collision to achieve a protective effect and increase the strength of the battery box.

[0068] like Figure 1 and Figure 4 As shown, the top of the baffle 30 has a first flange 310 bent toward one side of the installation cavity, the frame 20 has a second flange 211 bent toward the side away from the installation cavity, and the battery box also includes a fastener, and the first flange 310 and the second flange 211 are connected by the fastener.

[0069] Preferably, the front panel 210 and the rear panel 220 have a second flange 211 bent toward a side away from the installation cavity.

[0070] Specifically, a connected hole structure is provided on the first flange 310 and the second flange 211, and the fastener is fixedly set at the first flange 310 and the second flange 211 through the hole structure, wherein the fastener can be a structure of a combination of screws and bolts, so as to lock the first flange 310 and the second flange 211.

[0071] Furthermore, the fitting arrangement of the first flange 310 and the second flange 211 is helpful to increase the convenience of connection between the baffle 30 and the frame 20 .

[0072] like Figures 1 to 3 As shown, there are multiple hollow portions 301, and the multiple hollow portions 301 are spaced apart along the second direction. The side of the baffle 30 facing the frame 20 has multiple reinforcing ribs 330, and each hollow portion 301 is provided with at least one reinforcing rib 330 on both sides along the second direction.

[0073] Specifically, by providing reinforcing ribs 330 on the baffle 30 , it is helpful to increase the installation strength of the baffle 30 , thereby improving the stability of the battery box. A plurality of reinforcing ribs 330 are provided on both sides of the hollow portion 301 to support the hollow portion 301 .

[0074] Furthermore, along the height direction of the baffle 30 , a first flange 310 extends from the top of the baffle 30 toward the direction close to the frame 20 , and a bottom flange 320 extends from the bottom of the baffle 30 toward the direction close to the frame 20 . The top of the reinforcing rib 330 is connected to the first flange 310 , and the bottom of the reinforcing rib 330 is connected to the bottom flange 320 .

[0075] In this embodiment, the reinforcing rib 330 is arranged between the bottom flange 320 and the first flange 310, so as to avoid deformation of the bottom flange 320 and the first flange 310, thereby preventing the baffle 30 from being deformed by the arrangement of the reinforcing rib 330, thereby improving the strength of the baffle 30.

[0076] Embodiment 2

[0077] This embodiment provides a battery pack, which includes the battery box in the first embodiment.

[0078] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0079] At least a portion of the blocking strip 50 used in the present application cooperates with the groove structure to realize the installation of the blocking strip 50 on the base plate 10. The setting of the groove structure not only facilitates the installation and positioning of the blocking strip 50 and improves the assembly efficiency, but also compared with the welding position between the blocking strip and the base plate being located on the side of the base plate 10, the welding position is located between the blocking strip 50 and the base plate 10, thereby realizing the protection of the welding position and solving the problem in the prior art that the plug of the battery box is prone to open welding, thereby affecting the sealing.

[0080] It is also helpful to facilitate the friction stir welding between the blocking strip 50 and the base plate 10 to improve the stability of the connection; at the same time, the setting of the groove structure is helpful to increase the welding stroke, thereby improving the welding strength and ensuring the sealing effect of the blocking strip 50.

[0081] The battery box of the present application adopts a baffle 30 set on the outside of the frame 20. During the movement, installation and transportation of the battery box, the setting of the baffle 30 can protect the frame 20 and the bottom plate 10 to ensure that the frame 20 and the bottom plate 10 are not directly affected when they are bumped, thereby ensuring the stability of the connection between the bottom plate 10 and the frame 20, and further ensuring the safety of the use of the battery box.

[0082] The present application provides a hollow portion 301 on the baffle 30 to enable the water nozzle 40 to extend through and connect with the liquid cooling pipeline outside the battery box, so as to facilitate the normal operation of the liquid cooling system. At the same time, the provision of the hollow portion 301 is conducive to achieving lightweight.

[0083] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0084] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0085] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0086] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A battery box, characterized in that: include: A bottom plate (10) and a frame (20), wherein the bottom plate (10) and the frame (20) cooperate to enclose and form a mounting cavity, wherein the bottom plate (10) has a plurality of liquid cooling channels (120) for circulating a liquid cooling medium, and a groove structure is provided at at least one end of the bottom plate (10) along a first direction, wherein the groove structure is in communication with the liquid cooling channel (120); A confluence assembly, the confluence assembly being arranged on the base plate (10) and the inner cavity of the confluence assembly being in communication with the liquid cooling channel (120); A blocking bar (50), the blocking bar (50) comprising a first portion arranged inside the groove structure, the blocking bar (50) also comprising a second portion extending into the interior of the liquid-cooling channel (120), wherein the second portion is used to block the liquid-cooling channel (120).

2. The battery box according to claim 1, characterized in that: The blocking strip (50) comprises: an abutment portion (520), at least a portion of which is disposed inside the groove structure, a side surface of the abutment portion (520) disposed inside the groove structure abuts against an inner wall surface of the groove structure, and an upper surface of the abutment portion (520) is flush with an upper surface of the bottom plate (10); A plugging portion (530), wherein the plugging portion (530) is disposed on a side of the abutting portion (520) facing the liquid-cooling channel (120), and the plugging portion (530) extends into the interior of the liquid-cooling channel (120) to seal the liquid-cooling channel (120).

3. The battery box according to claim 2, characterized in that: The blocking strip (50) further comprises a mounting portion (510), wherein the mounting portion (510) is arranged on a side of the abutting portion (520) away from the blocking portion (530), the mounting portion (510) is arranged outside the groove structure, and the mounting portion (510) abuts against the bottom plate (10).

4. The battery box according to claim 3, characterized in that: The abutting portion (520) and the bottom plate (10) are friction stir welded; and / or The upper surface of the mounting portion (510) is flush with the upper surface of the bottom plate (10), and the mounting portion (510) and the bottom plate (10) are welded by friction stir welding.

5. The battery box according to claim 4, characterized in that: The battery box also includes: a baffle (30), the baffle (30) being arranged on a side of the frame (20) away from the installation cavity, and the baffle (30) having a hollow portion (301); A water nozzle (40), wherein the water nozzle (40) is arranged on the confluence assembly, one end of the water nozzle (40) is connected to the inner cavity of the confluence assembly, and the other end of the water nozzle (40) passes through the frame (20) and is exposed through the hollow portion (301).

6. The battery box according to claim 5, characterized in that: The top of the baffle (30) has a first flange (310) bent toward one side of the installation cavity, and the frame (20) has a second flange (211) bent toward a side away from the installation cavity, and the first flange (310) and the second flange (211) are connected by a fastener.

7. The battery box according to claim 5, characterized in that: The top surface of the mounting portion (510) is provided with a first mounting hole (511), the bottom of the baffle (30) is provided with a bottom flange (320), the bottom flange (320) is provided with a second mounting hole (321), and the battery box further comprises a fixing member, and the first mounting hole (511) and the second mounting hole (321) are connected via the fixing member.

8. The battery box according to claim 3, characterized in that: Both ends of the mounting portion (510) extend beyond the bottom plate (10) along a second direction perpendicular to the first direction.

9. The battery box according to claim 5, characterized in that: A plurality of the hollow portions (301) are provided, and the plurality of the hollow portions (301) are arranged at intervals along a second direction perpendicular to the first direction; a side of the baffle (30) facing the frame (20) has a plurality of reinforcing ribs (330), and at least one of the reinforcing ribs (330) is provided on both sides of each hollow portion (301) along the second direction; Along the height direction of the battery box, a first flange (310) extends from the top of the baffle (30) toward the direction close to the frame (20), and a bottom flange (320) extends from the bottom of the baffle (30) toward the direction close to the frame (20). The top of the reinforcing rib (330) is connected to the first flange (310), and the bottom of the reinforcing rib (330) is connected to the bottom flange (320).

10. A battery pack, characterized in that: The battery pack comprises the battery box according to any one of claims 1 to 9.

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