Battery box and battery pack

Abstract

The utility model provides a battery box and a battery pack, the battery box comprises a bottom plate and a frame body, the bottom plate and the frame body jointly enclose to form a mounting cavity, a plurality of cooling flow channels are arranged in the bottom plate, and the cooling flow channels are used for circulation of a cooling medium; at least one end of the bottom plate is provided with the confluence piece, the confluence piece is located on the outer side of the mounting cavity, and the confluence piece is connected with the bottom plate and communicates with the cooling flow channel. According to the battery box and the battery pack provided by the utility model, the confluence piece is arranged outside the mounting cavity, so that the problem that the battery is damaged due to leakage of cooling liquid in the prior art is effectively solved.

Description

Technical Field

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

[0002] During the charging and discharging process of the energy storage battery box, in order to solve the thermal runaway phenomenon of the battery cells, the battery system needs to have a certain cooling function. The integrated liquid cooling of the battery lower box has become the mainstream in the market, which can not only meet the cooling needs of the battery system but also play a bearing role for the battery module.

[0003] In the prior art, in order to achieve the circulation of coolant, a liquid cooling circulation assembly is usually arranged in the battery box, and the confluence cavity and the liquid inlet and outlet in the liquid cooling circulation assembly are connected to the circulation pipeline outside the battery box. The battery box and the liquid cooling circulation assembly are usually connected by stir friction welding and arc welding. However, due to welding defects or other objective factors, the connection between the battery box and the liquid cooling circulation assembly may have tiny leaks or leaks due to other reasons. The leaked coolant will contact the batteries in the battery box, which may easily cause the batteries to short-circuit.

[0004] As can be seen from the above, the battery box in the prior art has the problem that the leaked coolant will come into contact with the batteries in the battery box, which may easily cause a short circuit in the battery. Utility Model Content

[0005] 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 leaked coolant in the battery box may come into contact with the batteries in the battery box, which may easily cause a short circuit in the battery.

[0006] 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 together enclose an installation cavity, a plurality of cooling channels are provided in the base plate, and the cooling channels are used for circulating cooling medium; a manifold, at least one end of the base plate is provided with a manifold, the manifold is located outside the installation cavity, the manifold is connected to the base plate and communicates with the cooling channels.

[0007] Furthermore, the frame includes a plurality of side plates and at least one mounting plate, a mounting groove is formed between the mounting plate and the bottom plate, and at least a portion of the current collector is accommodated inside the mounting groove.

[0008] Furthermore, the mounting plate includes a flat plate section and a bent plate section connected in sequence, one end of the bent plate section is connected to the flat plate section, the other end of the bent plate section extends toward the mounting cavity and is connected to the bottom plate, and a mounting groove is formed between the bent plate section and the bottom plate.

[0009] Furthermore, the side plate along the second direction includes a first side plate connected to both ends of the mounting plate, the busbar extends along the second direction, and a projection of the busbar on the first side plate along the second direction does not exceed the first side plate.

[0010] Further, the busbar is accommodated inside the mounting groove; or the busbar is partially accommodated inside the mounting groove along the first direction, and another part of the busbar is exposed outside the mounting groove, and the part of the first side plate extending outside the mounting plate along the first direction forms a redundant part, and the projection area of ​​the busbar along the second direction is within the redundant part.

[0011] Furthermore, one end of the frame body facing away from the bottom plate has a flange extending toward the outside of the installation cavity, and along a direction perpendicular to the bottom plate, a projection area of ​​the flange on the bottom plate includes a projection area of ​​the current collector on the bottom plate.

[0012] Furthermore, the collector is partially accommodated inside the mounting groove, the mounting plate has a flange at one end away from the base plate, the first side plate extends outside the flange along the first direction, and at least a portion of the collector is located outside the flange along the first direction.

[0013] Furthermore, the side plate along the second direction includes a first side plate connected to both ends of the mounting plate, a reinforcing plate is provided at one end of the first side plate close to the bottom plate, the reinforcing plate is provided on the side of the first side plate away from the mounting cavity, the reinforcing plate protrudes toward the side away from the mounting cavity, and a clamping cavity is formed between the reinforcing plate and the first side plate.

[0014] Furthermore, the side plate along the second direction includes a first side plate connected to both ends of the mounting plate, and a reinforcing beam is provided on a side of the first side plate away from the mounting cavity, and the reinforcing beam extends along the first direction.

[0015] Further, the conduit is arranged at one end of the base plate, and the base plate also has a liquid inlet and a liquid outlet connected to the cooling channel. The conduit has a liquid inlet channel and a liquid outlet channel, the liquid inlet channel is connected to the liquid inlet, and the liquid outlet channel is connected to the liquid outlet; or the conduit is arranged at both ends of the base plate, the conduit located at one end includes a liquid inlet channel and is connected to the liquid inlet of the cooling channel, and the conduit located at the other end includes a liquid outlet channel and is connected to the liquid outlet of the cooling channel.

[0016] Furthermore, the battery box also includes a flow guide structure, which includes a male end and a female end. The male end is arranged on the collector, and the female end is arranged on the bottom plate. The male end and the female end are cooperatively connected. The flow guide structure allows the cooling medium to evenly enter several cooling channels.

[0017] Furthermore, the battery box also includes a liquid inlet structure, which is connected to the liquid inlet channel; a liquid outlet structure, which is connected to the liquid outlet channel; and a avoidance area for avoiding the liquid inlet structure and the liquid outlet structure is provided on the frame.

[0018] Furthermore, the base plate includes a main body having a cooling channel inside the main body; a plug, with plugs provided at both ends of the main body along the first direction, the plug having an extension portion extending into the cooling channel and a stop portion abutting against the main body, the extension portion and the stop portion cooperate to form a T-shaped structure.

[0019] According to another aspect of the present invention, a battery pack is provided, and the battery pack includes the above-mentioned battery box.

[0020] By applying the technical solution of the utility model, the following technical effects are achieved:

[0021] 1. By arranging the busbar outside the installation cavity, when the coolant in the busbar leaks, the leaked coolant is located outside the installation cavity, and the leaked coolant will not affect the battery located inside the installation cavity, thereby protecting the battery.

[0022] 2. The mounting groove formed by the frame and the base plate can protect the manifold to reduce damage to the manifold during installation or transportation and reduce the risk of leakage caused by collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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:

[0024] Figure 1 A schematic diagram of the three-dimensional structure of the battery box provided by the utility model;

[0025] Figure 2 An exploded view of the battery box provided by the utility model;

[0026] Figure 3 A schematic diagram of the structure of the base plate provided by the utility model;

[0027] Figure 4 This is a schematic diagram of the internal structure of the current collector provided by the utility model.

[0028] The above drawings include the following reference numerals:

[0029] 1. Bottom plate; 11. Liquid inlet; 12. Liquid outlet; 13. Main body; 14. Plug; 2. Frame; 21. Mounting plate; 211. Flat plate section; 212. Bent plate section; 22. First side plate; 221. Redundant part; 222. Reinforcement plate; 23. Flanging; 3. Confluence piece; 31. Shell; 32. Partition; 33. Liquid outlet channel; 34. Liquid inlet channel; 4. Liquid inlet structure; 5. Liquid outlet structure; 6. Mounting cavity; 7. Mounting slot; 8. Avoidance area. DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] 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.

[0033] In order to solve the problem in the prior art that leaked coolant in the battery box may come into contact with the batteries in the battery box, which may easily cause a short circuit in the batteries, the utility model provides a battery box, which overcomes the problem in the prior art by arranging the position where leakage may occur outside the accommodating cavity of the box body for placing the batteries.

[0034] Embodiment 1

[0035] like Figures 1 to 4 As shown, the battery box includes a base plate 1, a frame 2 and a collector 3. The frame 2 and the base plate 1 together enclose a mounting cavity 6 for placing the battery. A plurality of cooling channels are provided in the base plate 1 for circulating the cooling medium. The collector 3 is provided at at least one end of the base plate 1. The collector 3 is located outside the mounting cavity 6. The collector 3 is connected to the base plate 1 and communicates with the cooling channels.

[0036] The first direction is Figure 1 The X direction in the second direction is Figure 1 in the Y direction.

[0037] Specifically, the cooling channel provided in the bottom plate 1 is used for the flow of the coolant to cool the battery in the mounting cavity 6, and the coolant in the cooling channel is circulated through the manifold 3. The present application sets the manifold 3 on the bottom plate 1, and the setting position of the manifold 3 is outside the mounting cavity 6. In this way, when the coolant leaks, since the leaking part is outside the mounting cavity 6, the leaked coolant cannot cause damage to the battery, thereby achieving the protection effect of the battery in the battery box.

[0038] It should be noted that, in the present application, at least one end of the bottom plate 1 is provided with a collector 3, which means that the collector can be provided at one end of the bottom plate 1 or at both ends of the bottom plate 1, wherein the collector 3 is provided at one end of the bottom plate 1, specifically including: the collector 3 can be provided at the top surface of the end area of ​​the bottom plate 1 along the first direction, or at the side of the end area of ​​the bottom plate 1, or at the top surface and side of the end area of ​​the bottom plate 1. The specific setting position of the collector 3 can be adaptively adjusted as needed.

[0039] In this embodiment, according to different ways of setting the current collector 3, this embodiment provides two different implementations.

[0040] In a specific embodiment not shown in the figure, a conduit 3 is provided at both ends of the bottom plate 1 along the first direction, one of the conduits 3 is connected to the liquid inlet end of the cooling channel, and the other conduit 3 is connected to the liquid outlet end of the cooling channel.

[0041] Among them, the cooling channel provided by the bottom plate 1 allows the coolant to flow in one direction, that is, the coolant flows in a first direction, enters the cooling channel from one of the conduits 3 and flows out of the cooling channel through another conduit 3. The provision of two conduits 3 is conducive to improving the flow efficiency of the coolant, thereby improving the heat dissipation efficiency. The embodiment of the present application does not limit the specific setting method of the cooling channel in the bottom plate 1. In a possible implementation, a plurality of parallel cooling channels are provided in the bottom plate 1, and the conduit 3 is connected to the plurality of parallel cooling channels at the same time. At this time, the flow distance of the coolant is shorter and the cooling effect is better.

[0042] In such Figure 1 and Figure 2 In the specific embodiment shown, a manifold 3 is provided at one end of the bottom plate 1 along the first direction, and the manifold 3 is respectively connected to the liquid inlet end and the liquid outlet end of the cooling channel.

[0043] Among them, only one manifold 3 is arranged on the base plate 1, and the manifold 3 is connected with the liquid inlet and the liquid outlet of the cooling channel at the same time, so as to achieve the technical effect that one manifold 3 has liquid inlet and liquid return. By setting one manifold 3 to realize the flow of coolant, the use of parts is reduced and the assembly efficiency is improved.

[0044] like Figure 1 and Figure 2 As shown, the frame 2 includes a plurality of side plates and at least one mounting plate 21 . A mounting groove 7 is formed between the mounting plate 21 and the bottom plate 1 . At least a portion of the current collector 3 is accommodated inside the mounting groove 7 .

[0045] Specifically, a plurality of side panels and a mounting plate 21 are arranged together to form the frame 2 .

[0046] There are at least two side panels and at least one mounting plate 21. The present application is not limited to the cubic structure of the frame 2 formed by the side panels and the mounting plates as shown in the figure. The sum of the number of the side panels and the mounting plates 21 can also be five, and the side panels and the mounting plates 21 form a corresponding pentagonal cavity. Of course, the sum of the number of the side panels and the mounting plates 21 can also be six or seven or other numbers, and the corresponding side panels and mounting plates 21 cooperate to enclose the corresponding cavity.

[0047] It should be noted that the structural setting of the installation groove 7 can be a structure with an opening facing the side away from the base plate 1, a structure with an opening facing the side of the base plate 1, a structure with an opening facing the side away from the installation cavity 6, or a structure with an opening facing the side of the installation cavity 6.

[0048] In a specific implementation of this embodiment, the multiple side panels include a second side panel and a mounting plate 21 spaced apart along a first direction, two first side panels 22 spaced apart along a second direction perpendicular to the first direction, and the collector 3 is arranged on the side of the mounting plate 21 away from the mounting cavity 6.

[0049] When the current collectors 3 are disposed at both ends of the bottom plate 1 , the second side plate is a mounting plate 21 .

[0050] Furthermore, the busbar 3 is located outside the mounting cavity 6 to prevent the coolant from entering the mounting cavity 6 when the coolant leaks, thereby protecting the battery in the mounting cavity 6 .

[0051] Furthermore, along the height direction of the mounting plate 21, the mounting plate 21 includes a flat plate section 211 and a bent plate section 212 formed sequentially, one end of the bent plate section 212 is connected to the flat plate section 211, and the other end of the bent plate section 212 is bent toward the mounting cavity 6, forming a mounting groove 7 between the bent plate section 212 and the base plate 1.

[0052] The connection area between the mounting plate 21 and the bottom plate 1 is formed with a mounting groove 7 with an opening facing away from the mounting cavity 6, and at least a portion of the busbar 3 is accommodated inside the mounting groove 7. The busbar 3 placed in the mounting groove 7 can be protected by the mounting plate 21, and then when a collision occurs, the external force will act on the mounting plate 21 instead of directly on the busbar 3, which is conducive to reducing the damage to the busbar 3 during installation or transportation, and can protect the busbar 3.

[0053] When only one busbar 3 is arranged on the base plate 1, only the connection area between the mounting plate 21 and the base plate 1 is formed with a mounting groove 7 whose opening is away from the mounting cavity 6; when two busbars 3 are arranged on the base plate 1, the connection areas between the two corresponding mounting plates 21 spaced apart along the first direction and the base plate 1 are both formed with mounting grooves 7 whose opening is away from the mounting cavity 6.

[0054] At least a portion of the current collector 3 is accommodated in the mounting groove 7 , that is, the current collector 3 may be completely accommodated in the mounting groove 7 , or a portion of the current collector 3 may be accommodated in the mounting groove 7 .

[0055] Specifically, the current collector 3 extends along the second direction and a projection of the current collector 3 on the first side plate 22 along the second direction does not exceed the first side plate 22 , so that the current collector 3 is protected by the first side plate 22 .

[0056] In this embodiment, when the collector 3 is partially accommodated inside the mounting groove 7 along the first direction and the other part of the collector 3 is exposed outside the mounting groove 7, the part of the first side plate 22 extending outside the mounting plate 21 along the first direction forms a redundant portion 221, and the projection area of ​​the collector 3 along the second direction is within the redundant portion 221. The redundant portion 221 along the second direction is used to limit and protect the collector 3. The redundant portions 221 provided on the two first side plates 22 spaced apart along the second direction can achieve the function of limiting and protecting the collector 3 in the second direction, thereby improving the stability and safety of the installation of the collector 3.

[0057] It should be noted that when the current collector 3 is completely accommodated in the mounting groove 7 , the redundant portion 221 may not be provided.

[0058] like Figure 1 and Figure 2 As shown, the end of the frame 2 facing away from the base plate 1 has a flange 23 extending toward the outside of the installation cavity 6 , and along the direction perpendicular to the base plate 1 , the projection area of ​​the flange 23 on the base plate 1 includes the projection area of ​​the busbar 3 on the base plate 1 .

[0059] Specifically, the provision of the flange 23 is conducive to achieving a sealed connection, and the projection area of ​​the flange 23 on the base plate 1 includes the projection of the busbar 3 on the base plate 1. The flange 23 also has the effect of protecting the busbar 3, further improving the stability of the use of the busbar 3.

[0060] In this embodiment, if Figure 1 and Figure 2 As shown, multiple side panels along the second direction include a first side panel 22 connected to both ends of the mounting plate 21, a reinforcing plate 222 is provided at one end of the first side panel 22 close to the bottom plate 1, the reinforcing plate 222 is provided on the side of the first side panel 22 away from the mounting cavity, the reinforcing plate 222 protrudes toward the side away from the mounting cavity 6, and a clamping cavity is formed between the reinforcing plate 222 and the first side panel 22.

[0061] Specifically, the reinforcing plate 222 and the first side plate 22 cooperate to form a sandwich structure with a sandwich cavity, and the sandwich structure is conducive to improving the connection strength between the first side plate 22 and the bottom plate 1, and the reinforcing plate 222 is also conducive to facilitating the hoisting of the battery box as a whole. The reinforcing plate is provided with a hoisting hole or a hoisting ear structure for hoisting.

[0062] Furthermore, a reinforcing beam is provided on the side of the first side plate 22 away from the installation cavity, and the reinforcing beam extends along the first direction. Providing the reinforcing beam is conducive to strengthening the strength of the first side plate 22, thereby improving the strength of the entire frame, and is conducive to improving the overall stability of the battery box, thereby better protecting the batteries inside the battery box.

[0063] Further, one or more reinforcing beams are provided. When there are multiple reinforcing beams, the multiple reinforcing beams are arranged at intervals along the height direction of the first side plate 22 .

[0064] In this embodiment, when the manifold 3 is arranged at one end of the base plate 1, the base plate 1 also has a liquid inlet 11 and a liquid outlet 12 connected to the cooling channel, and the manifold 3 has a liquid inlet channel 34 and a liquid outlet channel 33 arranged at intervals along the first direction, the liquid inlet channel 34 is connected to the liquid inlet 11, and the liquid outlet channel 33 is connected to the liquid outlet 12.

[0065] Among them, the liquid inlet 11 provided on the bottom plate 1 is connected to the liquid inlet channel 34 in the manifold 3, the liquid outlet 12 provided on the bottom plate 1 is connected to the liquid outlet channel 33 in the manifold 3, the liquid inlet channel 34 is connected to the liquid outlet channel 33 through the cooling channel, and the circulation of the coolant is completed through the liquid inlet channel 34 and the liquid outlet channel 33. That is, the coolant flows into the cooling channel through the liquid inlet channel 34, and the coolant inside the cooling channel flows out from the liquid outlet channel 33, completing the flow of the coolant.

[0066] Furthermore, the manifold 3 includes a shell 31 and a partition 32 . The partition 32 is disposed inside the shell 31 . The partition 32 is disposed along a second direction perpendicular to the first direction. The partition 32 divides the inside of the shell 31 into a liquid inlet channel 34 and a liquid outlet channel 33 .

[0067] The conduit 3 is separated into an inlet channel 34 and an outlet channel 33 by a partition 32, and the interior of the conduit 3 is divided into two parts. When the coolant flows, the coolant inside the inlet channel 34 and the outlet channel 33 does not communicate with each other, thereby avoiding confusion of the coolant and ensuring that the coolant flows through the inlet channel 34, the cooling channel and the outlet channel 33 in sequence, thereby realizing liquid cooling circulation of the coolant.

[0068] In this embodiment, the battery box also includes a flow guiding structure, which includes a male end and a female end. The male end is arranged on the collector 3, and the female end is arranged on the bottom plate 1. The male end and the female end are matched and connected. The flow guiding structure allows the cooling medium to enter the cooling channels uniformly. The flow guiding structure is provided to improve the smoothness and uniformity of the cooling medium flow, thereby improving the liquid cooling efficiency.

[0069] The liquid inlet channel 34 of the manifold 3 is provided with a liquid inlet channel opening, which corresponds one-to-one to the liquid inlet port 11 provided on the base plate 1, and the cooling channel in the base plate 1 is connected to the liquid inlet channel 34 in the manifold 3 through the liquid inlet channel opening and the liquid inlet port 11. The liquid outlet channel 33 of the manifold is provided with a liquid outlet channel opening, which corresponds one-to-one to the liquid outlet port 12 provided on the base plate 1, and the cooling channel in the base plate 1 is connected to the liquid outlet channel 33 in the manifold 3 through the liquid outlet channel opening and the liquid outlet port 12.

[0070] The male end of the guide structure is arranged at the inlet or outlet of the conduit 3, for example, it can be an upper limit step circumferentially arranged at the inlet or outlet of the liquid flow channel, and the female end of the guide structure is arranged at the inlet or outlet of the base plate, for example, it can be a lower limit step recessed at the position of the inlet or outlet corresponding to the upper limit step, the upper limit step and the lower limit step are interspersed with each other and form a matching connection surface, and the upper limit step introduces the cooling medium into the cooling channel.

[0071] like Figures 1 to 4 As shown, the battery box also includes a liquid inlet structure 4 and a liquid outlet structure 5. The liquid inlet structure 4 is connected to the liquid inlet channel 34, and the liquid outlet structure 5 is connected to the liquid outlet channel 33. The liquid inlet structure 4 and the liquid outlet structure 5 are spaced apart along a second direction perpendicular to the first direction.

[0072] Among them, the liquid inlet structure 4 and the liquid outlet structure 5 are box bodies.

[0073] Furthermore, the liquid inlet structure 4 and the liquid outlet structure 5 are connected to external pipelines, so as to facilitate the coolant to enter the manifold 3 and the circulated coolant to flow out of the manifold 3 .

[0074] Furthermore, the frame 2 has a relief area 8 for evading the liquid inlet structure 4 and the liquid outlet structure 5 , and the relief area 8 is communicated with the mounting groove 7 .

[0075] Among them, the avoidance area 8 is used to place the liquid inlet structure 4 and the liquid outlet structure 5, so that the liquid inlet structure 4 and the liquid outlet structure 5 are located on the inner wall of the avoidance area 8. The avoidance area 8 protects the liquid inlet structure 4 and the liquid outlet structure 5, reducing damage to the liquid inlet structure 4 and the liquid outlet structure 5 during installation or transportation.

[0076] In this embodiment, the bottom plate 1 includes a body 13 and a plug 14 . The body 13 has a cooling channel inside, and the plugs 14 are provided at both ends of the body 13 along the first direction.

[0077] The plug 14 blocks the cooling channel inside the bottom plate 1 , which can prevent the bottom plate 1 from leaking the coolant, thereby improving the protection effect on the battery.

[0078] Specifically, the plug 14 has an extension portion extending into the cooling channel and a stopper portion abutting against the body 13, and the extension portion and the stopper portion cooperate to form a T-shaped structure. The extension portion extends into the cooling channel to achieve a good plugging effect and avoid leakage.

[0079] In this embodiment, the bottom plate 1 and the frame 2 are fixed by welding, and the busbar 3 and the bottom plate 1 are fixed by welding.

[0080] Specifically, the bottom plate 1 and the frame 2 can be connected by means of stir friction welding or arc welding, and the body 13 of the bottom plate 1 and the plug 14 can be connected by stir friction welding to increase the stability of the connection and the sealing effect.

[0081] Furthermore, the manifold 3 is connected to the liquid inlet structure 4 and the liquid outlet structure 5 as a whole by laser welding or arc welding, and then the whole is connected to the bottom plate 1 by welding to increase the stability of the connection and the sealing effect.

[0082] Embodiment 2

[0083] Different from the first embodiment, in this embodiment, at least a portion of the current collector 3 along the first direction is located outside the flange 23 .

[0084] Specifically, one end of the mounting plate 21 away from the bottom plate 1 has a flange 23 , the first side plate 22 extends along the first direction to the outside of the flange 23 , and at least a portion of the current collector 3 is located outside of the flange 23 .

[0085] Embodiment 3

[0086] This embodiment provides a battery pack, which includes the battery box in Embodiment 1 or Embodiment 2. The battery box is provided with batteries, and the embodiment of the present application does not limit the specific implementation method of providing the batteries in the battery box.

[0087] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0088] 1. By arranging the collector 3 outside the mounting cavity 6, when the coolant in the collector 3 leaks, the leaked coolant is located outside the mounting cavity 6, and the leaked coolant will not affect the battery located inside the mounting cavity 6, thereby protecting the battery.

[0089] 2. The mounting groove 7 formed by the mounting plate 21 and the base plate 1 can protect the manifold 3 to reduce damage to the manifold 3 during installation or transportation and reduce the risk of leakage caused by collision.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A battery box, characterized in that: include: A base plate (1) and a frame (2), wherein the base plate (1) and the frame (2) are jointly arranged to form a mounting cavity (6), and a plurality of cooling channels are arranged in the base plate (1), and the cooling channels are used for circulating a cooling medium; A collector (3), wherein at least one end of the base plate (1) is provided with the collector (3), the collector (3) is located outside the mounting cavity (6), and the collector (3) is connected to the base plate (1) and communicates with the cooling channel.

2. The battery box according to claim 1, characterized in that: The frame (2) comprises a plurality of side plates and at least one mounting plate (21); a mounting groove (7) is formed between the mounting plate (21) and the bottom plate (1); and at least a portion of the current collector (3) is accommodated inside the mounting groove (7).

3. The battery box according to claim 2, characterized in that: The mounting plate (21) comprises a flat plate section (211) and a bent plate section (212) connected in sequence, one end of the bent plate section (212) being connected to the flat plate section (211), the other end of the bent plate section (212) extending in the direction of the mounting cavity (6) and being connected to the bottom plate (1), and the mounting groove (7) being formed between the bent plate section (212) and the bottom plate (1).

4. The battery box according to claim 2, characterized in that: The plurality of side plates include a first side plate (22) connected to both ends of the mounting plate (21), the current collector (3) extending along a second direction and a projection of the current collector (3) on the first side plate (22) along the second direction not exceeding the first side plate (22).

5. The battery box according to claim 4, characterized in that: The current collector (3) is accommodated inside the mounting groove (7); or Part of the current collector (3) is accommodated inside the mounting groove (7) along the first direction, and another part of the current collector (3) is exposed outside the mounting groove (7); the first side plate (22) extends outside the mounting plate (21) along the first direction to form a redundant portion (221); and a projection area of ​​the current collector (3) along the second direction is within the redundant portion (221).

6. The battery box according to claim 1, characterized in that: The frame (2) has an end facing away from the base plate (1) with a flange (23) extending toward the outside of the mounting cavity (6); along a direction perpendicular to the base plate (1), a projection area of ​​the flange (23) on the base plate (1) includes a projection area of ​​the current collector (3) on the base plate (1).

7. The battery box according to claim 5, characterized in that: Part of the current collector (3) is accommodated inside the mounting groove (7) along a first direction, and another part of the current collector (3) is exposed outside the mounting groove (7); one end of the mounting plate (21) away from the base plate (1) has a flange (23); the first side plate (22) extends outside the flange (23) along the first direction; and at least a part of the current collector (3) is located outside the flange (23) along the first direction.

8. The battery box according to claim 2, characterized in that: The side plate comprises a first side plate (22) connected to both ends of the mounting plate (21); a reinforcing plate (222) is provided at one end of the first side plate (22) close to the bottom plate (1); the reinforcing plate (222) is provided on a side of the first side plate (22) away from the mounting cavity (6); the reinforcing plate (222) protrudes toward a side away from the mounting cavity (6); and a clamping cavity is formed between the reinforcing plate (222) and the first side plate (22).

9. The battery box according to claim 2, characterized in that: The side plate comprises a first side plate (22) connected to both ends of the mounting plate (21); a reinforcing beam is provided on a side of the first side plate (22) away from the mounting cavity, and the reinforcing beam extends along a first direction.

10. The battery box according to any one of claims 1 to 9, characterized in that: The confluence piece (3) is arranged at one end of the base plate (1), the base plate (1) also has a liquid inlet (11) and a liquid outlet (12) which are connected to the cooling channel, the confluence piece (3) has a liquid inlet channel (34) and a liquid outlet channel (33), the liquid inlet channel (34) is connected to the liquid inlet (11), and the liquid outlet channel (33) is connected to the liquid outlet (12); or The confluence piece (3) is arranged at two ends of the base plate (1); the confluence piece (3) located at one end includes a liquid inlet channel (34) and is connected to a liquid inlet (11) of the cooling channel; the confluence piece (3) located at the other end includes a liquid outlet channel (33) and is connected to a liquid outlet (12) of the cooling channel.

11. The battery box according to claim 10, characterized in that: The battery box also includes a flow guiding structure, which includes a male end and a female end, wherein the male end is arranged on the collector (3), and the female end is arranged on the base plate (1), and the male end is cooperatively connected with the female end, and the flow guiding structure allows the cooling medium to evenly enter the plurality of cooling channels.

12. The battery box according to claim 10, characterized in that: The battery box also includes: A liquid inlet structure (4), the liquid inlet structure (4) being in communication with the liquid inlet channel (34); A liquid outlet structure (5), wherein the liquid outlet structure (5) is in communication with the liquid outlet channel (33); The frame (2) has an escape area (8) for escaping the liquid inlet structure (4) and the liquid outlet structure (5).

13. The battery box according to any one of claims 1 to 9, characterized in that: The bottom plate (1) comprises: A body (13), wherein the cooling channel is provided inside the body (13); A plug (14) is provided at both ends of the body (13) along the first direction, the plug (14) comprising a protruding portion extending into the interior of the cooling channel and a stopper abutting against the body (13), the protruding portion and the stopper cooperating to form a T-shaped structure.

14. A battery pack, characterized in that: The battery pack comprises the battery box according to any one of claims 1-13.

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