Battery plug-in box and electric equipment

Abstract

The utility model relates to the technical field of batteries, in particular to a battery plug-in box and electric equipment.The battery plug-in box comprises a box body and a cover plate, the box body is provided with a battery bin, the battery bin is used for containing a battery module, the cover plate is arranged at the top of the box body and used for guaranteeing sealing of the interior of the box body, and the box body comprises a plurality of box walls. The plurality of box walls comprise a bottom wall and side walls arranged on the bottom wall; at least one side wall is a jet flow side wall, a first flow channel is arranged in the jet flow side wall, one end of the first flow channel is connected with a liquid inlet, a jet flow hole is formed in the inner wall surface, facing the battery compartment, of the jet flow side wall, and the jet flow hole is communicated with the other end of the first flow channel; a second flow channel is arranged in at least one box wall, one end of the second flow channel is connected with a liquid outlet, a liquid collecting hole is formed in the inner wall surface, facing the battery compartment, of the box wall, and the liquid collecting hole is communicated with the other end of the second flow channel; and the first flow channel and the second flow channel are both used for circulating cooling liquid, so that the battery module is immersed in the cooling liquid of the battery compartment.

Description

Technical Field

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

[0002] In the design schemes of existing battery devices, an air-cooling method or a heat dissipation method with a liquid-cooling plate arranged at the bottom is usually adopted as the heat dissipation scheme. However, the convective heat transfer coefficient of the air-cooling heat dissipation method is small, and the heat dissipation capacity is limited. When the liquid-cooling plate heat dissipation method is used to dissipate heat from the battery module, due to the limitation of the heat conduction distance, there is a large temperature difference between the top and the bottom of the battery module, which is not conducive to the battery temperature consistency. Summary of the Utility Model

[0003] A main object of the utility model is to overcome at least one defect of the above-mentioned existing technology, and provide a battery insertion box with better heat dissipation performance and conducive to improving temperature consistency.

[0004] To achieve the above object, the utility model adopts the following technical scheme:

[0005] According to one aspect of the utility model, a battery insertion box is provided, which includes: a box body and a cover plate. The box body has a battery compartment for accommodating a battery module. The cover plate is arranged on the top of the box body to ensure the sealing inside the box body. The box body includes a plurality of box walls, and the plurality of box walls include a bottom wall and side walls arranged on the bottom wall; at least one of the side walls is a jet side wall, and a first flow channel is arranged inside the jet side wall. One end of the first flow channel is connected with a liquid inlet, and a jet hole is arranged on the inner wall surface of the jet side wall facing the battery compartment, and the jet hole is communicated with the other end of the first flow channel; a second flow channel is arranged inside at least one of the box walls, one end of the second flow channel is connected with a liquid outlet, and a liquid collecting hole is arranged on the inner wall surface of the box wall facing the battery compartment, and the liquid collecting hole is communicated with the other end of the second flow channel; wherein, both the first flow channel and the second flow channel are used for circulating a coolant so that the battery module is immersed in the coolant in the battery compartment.

[0006] According to one embodiment of the utility model, a plurality of the jet holes are arranged on the inner wall surface of the jet side wall.

[0007] According to one embodiment of the utility model, the plurality of jet holes arranged on the same jet side wall are divided into multiple columns arranged at intervals in the horizontal direction, and each column includes at least two jet holes arranged at intervals in the vertical direction.

[0008] According to one embodiment of the present utility model, the following are provided: multiple jet holes provided on the same jet sidewall are divided into at least three columns, and the columns are arranged at uniform intervals; and / or, each column includes at least three jet holes, and the jet holes in the same column are arranged at uniform intervals; and / or, the number of jet holes in each column is equal.

[0009] According to one embodiment of the present utility model, the battery module includes battery columns, and each battery column includes a plurality of single cells arranged in a first direction; wherein, the jet sidewall is a sidewall parallel to the first direction.

[0010] According to one embodiment of the present utility model, the bottom wall is rectangular and has two long sides and two short sides, the box body includes four sidewalls, and the four sidewalls are respectively two long sidewalls and two short sidewalls, the two long sidewalls are respectively connected to the two long sides, and the two short sidewalls are respectively connected to the two short sides; wherein, among the four sidewalls, only two long sidewalls are the jet sidewalls, and the liquid inlet and the liquid outlet are provided on the short sidewalls.

[0011] According to one embodiment of the present utility model, the liquid inlet and the liquid outlet are provided on the same short sidewall.

[0012] According to one embodiment of the present utility model, the extending direction of the long side is the second direction, the liquid collecting hole is provided on the bottom wall, and the liquid collecting hole is located at one end of the bottom wall away from the short sidewall provided with the liquid outlet in the second direction.

[0013] According to one embodiment of the present utility model, the bottom wall is a liquid cooling plate, the liquid collecting hole is provided on the liquid cooling plate, and the liquid cooling plate has a heat exchange flow channel inside, and the heat exchange flow channel constitutes at least a part of the second flow channel.

[0014] As can be seen from the above technical solutions, the advantages and positive effects of the battery cassette proposed by the present utility model are as follows:

[0015] The battery insertion box proposed by the present utility model includes a box body, and a cover plate is provided on the top of the box body to ensure the sealing inside the box body. The box body includes a plurality of box walls, and the plurality of box walls include a bottom wall and side walls provided on the bottom wall; at least one side wall is a jet side wall, and a first flow channel is provided inside the jet side wall. One end of the first flow channel is connected to a liquid inlet, and jet holes are provided on the inner wall surface of the jet side wall, and the jet holes are communicated with the other end of the first flow channel; a second flow channel is provided inside at least one box wall, one end of the second flow channel is connected to a liquid outlet, and liquid collection holes are provided on the inner wall surface of the box wall, and the liquid collection holes are communicated with the other end of the second flow channel; both the first flow channel and the second flow channel are used for circulating coolant so that the battery module is immersed in the coolant in the battery compartment. Since the inside of the box body is a sealed structure, after the coolant enters the battery compartment through the first flow channel, the pressure in the battery compartment will increase, forcing the coolant to flow to the second flow channel through the liquid collection holes. Through the above structural design, the present utility model can use the jet holes provided on the jet side wall to realize the efficient cooling of the side surface of the battery module by the jet flow of the coolant, and can realize the immersion cooling of the battery module, thereby being beneficial to providing a better heat dissipation effect, significantly improving the heat dissipation efficiency under the same coolant inlet volume, and at the same time being able to ensure the temperature consistency of the battery during charging and discharging, effectively suppressing thermal runaway, and being beneficial to improving the product competitiveness of the battery insertion box.

[0016] Another main object of the present utility model is to overcome at least one defect of the above-mentioned prior art and provide an electrical equipment.

[0017] To achieve the above object, the present utility model adopts the following technical solutions:

[0018] According to one aspect of the present utility model, there is provided an electrical equipment, which includes the battery insertion box proposed by the present utility model and described in the above-mentioned embodiments.

[0019] It can be seen from the above technical solutions that the advantages and positive effects of the electrical equipment proposed by the present utility model are as follows:

[0020] The electrical equipment proposed by the present utility model can improve the heat dissipation efficiency of the battery insertion box by adopting the battery insertion box proposed by the present utility model, and at the same time can ensure the temperature consistency of the battery insertion box and effectively suppress thermal runaway. Description of the Drawings

[0021] By considering the following detailed description of the preferred embodiments of the present utility model in conjunction with the drawings, various objects, features and advantages of the present utility model will become more obvious. The drawings are only illustrative diagrams of the present utility model and are not necessarily drawn to scale. In the drawings, the same reference numerals always represent the same or similar components. Among them:

[0022] Figure 1It is a three-dimensional exploded schematic view of an electrical device shown according to an exemplary embodiment;

[0023] Figure 2 is Figure 1 a top view of the box body of the battery cassette shown;

[0024] Figure 3 is a cross-sectional view taken along Figure 2 the straight line A-A in

[0025] The description of the reference numerals is as follows:

[0026] 100. Box body;

[0027] 101. First flow channel;

[0028] 102. Second flow channel;

[0029] 110. Bottom wall;

[0030] 111. Liquid collecting hole;

[0031] 120. Side wall;

[0032] 130. Jet side wall;

[0033] 131. Jet hole;

[0034] 151. Liquid inlet;

[0035] 152. Liquid outlet;

[0036] 200. Cover plate;

[0037] 300. Battery row;

[0038] 310. Single battery;

[0039] X. First direction. Detailed implementation mode

[0040] Typical embodiments embodying the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various variations in different embodiments, all of which do not depart from the scope of the present invention, and the descriptions and drawings therein are for illustrative purposes in essence and are not used to limit the present invention.

[0041] In the following description of different exemplary embodiments of the present utility model, reference is made to the accompanying drawings which form a part of the present utility model and in which are shown, by way of example, different exemplary structures, systems and steps for implementing various aspects of the present utility model. It should be understood that other specific solutions of components, structures, exemplary devices, systems and steps may be used and structural and functional modifications may be made without departing from the scope of the present utility model. Moreover, although terms such as "above", "between", "inside" etc. may be used in this specification to describe different exemplary features and elements of the present utility model, these terms are used herein for convenience only, for example, according to the directions of the examples described in the accompanying drawings. Nothing in this specification should be construed as requiring a specific three-dimensional orientation of the structure to fall within the scope of the present utility model.

[0042] Referring to Figure 1 , which representatively shows a three-dimensional exploded view of an electrical device proposed by the present utility model, in which a three-dimensional exploded structure of a battery cassette proposed by the present utility model is shown. In this exemplary embodiment, the battery cassette proposed by the present utility model is described by taking an application to an in-vehicle electrical device as an example. It is easy for those skilled in the art to understand that, in order to apply the relevant designs of the present utility model to other types of electrical devices, various modifications, additions, substitutions, deletions or other changes are made to the following specific embodiments, and these changes are still within the scope of the principle of the battery cassette proposed by the present utility model.

[0043] As Figure 1 shown, in an embodiment of the present utility model, the battery cassette proposed by the present utility model includes a box body 100 and a cover plate 200. The box body 100 has a battery compartment, and the battery module is accommodated in the battery compartment and immersed in the coolant. The cover plate 200 is disposed on the top of the box body 100, and the cover plate 200 can ensure the sealing inside the box body 100. Among them, the box body 100 includes a plurality of box walls, and these box walls include a bottom wall 110 and side walls 120 disposed on the bottom wall 110 (for example, but not limited to the four side walls 120 shown in the accompanying drawings). With reference to Figure 2 and Figure 3 , Figure 2 represents a top view of the box body 100 of the battery cassette; Figure 3 represents a cross-sectional view taken along the straight line A-A in Figure 2 .

[0044] As Figures 1 to 3As shown, in an embodiment of the present utility model, at least one side wall 120 is a jet side wall 130. The inside of the jet side wall 130 has a first flow channel 101. One end of the first flow channel 101 is connected to a liquid inlet 151. A jet hole 131 is provided on the inner wall surface of the jet side wall 130 facing the battery compartment, and the jet hole 131 communicates with the other end of the first flow channel 101. At least one box wall (i.e., it can be the bottom wall 110 and / or the side wall 120) has a second flow channel 102 inside. One end of the second flow channel 102 is connected to a liquid outlet 152. A liquid collection hole 111 is provided on the inner wall surface of the box wall (i.e., it can be the bottom wall 110 and / or the side wall 120) facing the battery compartment, and the liquid collection hole 111 communicates with the other end of the second flow channel 102. Accordingly, both the first flow channel 101 and the second flow channel 102 are used for circulating the coolant so that the battery module is immersed in the coolant in the battery compartment. Since the inside of the box body 100 is a sealed structure, when the coolant enters the battery compartment through the first flow channel 101, the pressure in the battery compartment will increase, forcing the coolant to flow to the second flow channel 102 through the liquid collection hole 111. Through the above structural design, the present utility model can use the jet holes 131 provided on the jet side wall 130 to efficiently cool the side surface of the battery module in a jet manner, and can achieve the immersion cooling of the battery module, which is beneficial to providing a better heat dissipation effect. Accordingly, the boundary layer thickness on the battery surface is reduced, the thermal resistance on the battery surface is effectively reduced, and the heat dissipation efficiency is significantly improved under the same coolant inlet volume. At the same time, the temperature consistency of the battery during charging and discharging can be ensured, thermal runaway can be effectively inhibited, and it is beneficial to improve the product competitiveness of the battery chassis. Specifically, through jet cooling, the heat transfer intensity of the surface of the battery (such as the side surface of the single battery 310) being jetted increases, and the cooling effect in the jet area is enhanced. When the coolant is poured into the battery compartment of the box body 100 to submerge the battery module, the entire battery module is immersed in the coolant, thereby achieving the immersion cooling effect. The present utility model can achieve multiple cooling and heat dissipation methods, ensuring the battery temperature consistency and improving the cycle life and safety of the battery.

[0045] As Figure 1 and Figure 3 shown, in an embodiment of the present utility model, a plurality of jet holes 131 can be provided on the inner wall surface of the jet side wall 130. Through the above structural design, when the jet side wall 130 is provided with a plurality of jet holes 131, the effective jet area of the coolant passing through the jet holes 131 can be increased, so that the side surface of the battery module is more fully covered by the coolant jet, enhancing the battery temperature consistency.

[0046] As Figure 3As shown, based on the structural design in which a plurality of jet holes 131 are provided on the inner wall surface of the jet side wall 130, in an embodiment of the present invention, for the plurality of jet holes 131 provided on the inner wall surface of the same jet side wall 130, the plurality of jet holes 131 can be arranged in multiple columns, and these columns are arranged at intervals in the horizontal direction, and each column includes at least two (such as but not limited to ten shown in the drawings) jet holes 131 arranged at intervals in the vertical direction. Through the above structural design, the present invention can further increase the effective jet area of the coolant passing through the jet holes 131, making the coverage of the coolant jet on the side of the battery module more sufficient. In some embodiments, the plurality of jet holes 131 provided on the same jet side wall 130 can also adopt other arrangement modes, such as being arranged along a serpentine path, along a meandering path, in an irregular arrangement, etc., and are not limited to this embodiment.

[0047] As Figure 3 shown, based on the structural design in which the plurality of jet holes 131 are arranged in multiple columns, in an embodiment of the present invention, for the plurality of jet holes 131 provided on the inner wall surface of the same jet side wall 130, the plurality of jet holes 131 can be divided into at least three columns (such as but not limited to eight columns shown in the drawings), and each column can be arranged at uniform intervals. Through the above structural design, the present invention can make the distribution of the coolant jet passing through the jet holes 131 more uniform, which is beneficial to improving the temperature consistency of the battery.

[0048] As Figure 3 shown, based on the structural design in which the plurality of jet holes 131 are arranged in multiple columns, in an embodiment of the present invention, each column can include at least three jet holes 131, and the jet holes 131 in the same column can be arranged at uniform intervals. Through the above structural design, the present invention can make the distribution of the coolant jet passing through the jet holes 131 more uniform, which is beneficial to improving the temperature consistency of the battery.

[0049] As Figure 3 shown, based on the structural design in which the plurality of jet holes 131 are arranged in multiple columns, in an embodiment of the present invention, the number of jet holes 131 in each column can be equal. Through the above structural design, the present invention can make the distribution of the coolant jet passing through the jet holes 131 more uniform, which is beneficial to improving the temperature consistency of the battery.

[0050] In another embodiment not shown in the present invention, the jet side wall 130 can also be provided with a jet nozzle at the jet hole 131.

[0051] As Figure 1As shown, in an embodiment of the present utility model, the battery module includes a battery row 300, and the battery row 300 includes a plurality of (for example, but not limited to, eight as shown in the drawings) single cells 310 arranged along the first direction X. On this basis, the jet sidewall 130 can be the sidewall 120 parallel to the first direction X. On this basis, for other sidewalls 120 that are not parallel to the first direction X, they can be used as the jet sidewall 130 or not. Through the above structural design, since the plurality of single cells 310 of the battery are arranged along the first direction X, except for the two single cells 310 at both ends in the first direction X, the sides of the remaining single cells 310 perpendicular to the first direction X are stacked with each other, and the exposed sides of these single cells 310 are all their respective sides parallel to the first direction X. In this regard, the present utility model uses the sidewall 120 parallel to the arrangement direction of the single cells 310 as the jet sidewall 130, which can more fully utilize the coolant jet to achieve heat dissipation of the single cells 310 and improve the heat dissipation rate.

[0052] As Figure 1 and Figure 2 As shown, in an embodiment of the present utility model, the bottom wall 110 can be rectangular, that is, the bottom wall 110 has two long sides and two short sides. Correspondingly, the box body 100 can include four sidewalls 120, and these four sidewalls 120 are respectively two long sidewalls and two short sidewalls. The two long sidewalls are respectively connected to the two long sides, and the two short sidewalls are respectively connected to the two short sides. On this basis, among the above four sidewalls 120, only two long sidewalls can be the jet sidewalls 130, that is, the inner wall surfaces of the two short sidewalls are not provided with jet holes 131. And, the liquid inlet 151 and the liquid outlet 152 can be arranged on the short sidewalls. At this time, a part of the first flow channel 101 is arranged inside the long sidewall (i.e., the jet sidewall 130), and another part of the first flow channel 101 is arranged inside the short sidewall provided with the liquid inlet 151. These two parts are connected and jointly form the first flow channel 101. Through the above structural design, the present utility model arranges the jet holes 131, the liquid inlet 151, and the liquid outlet 152 on different sidewalls 120, which is convenient for the arrangement of the jet holes 131, the liquid inlet 151, and the liquid outlet 152, reduces the processing difficulty, and is beneficial to extending the extension length of the first flow channel 101 and further optimizing the heat dissipation effect. In some embodiments, at least one of the liquid inlet 151 and the liquid outlet 152 can also be arranged on the long sidewall (i.e., the jet sidewall 130) or the bottom wall 110, and is not limited to this embodiment.

[0053] As Figure 1 and to Figure 3As shown, based on the structural design where the liquid inlet 151 and the liquid outlet 152 are arranged on the short side wall, in an embodiment of the present utility model, the liquid inlet 151 and the liquid outlet 152 can be arranged on the same short side wall. Through the above structural design, the present utility model can facilitate the inlet and outlet liquid pipelines respectively connected to the liquid inlet 151 and the liquid outlet 152 to be led out and extended on the same side of the box body 100, which is beneficial to shortening the pipeline length and space occupation and reducing the structural complexity.

[0054] As Figure 1 and Figure 3 shown, in an embodiment of the present utility model, the installation height of the liquid inlet 151 can be higher than the installation height of the liquid outlet 152.

[0055] As Figure 2 shown, based on the structural design where the liquid inlet 151 and the liquid outlet 152 are arranged on the short side wall, in an embodiment of the present utility model, the extending direction of the above-mentioned long side of the rectangular bottom wall 110 is defined as the second direction (i.e., the first direction X). Among them, the liquid collecting hole 111 can be arranged on the bottom wall 110, and the liquid collecting hole 111 is located at one end of the bottom wall 110 away from the short side wall where the liquid outlet 152 is arranged in the second direction. At this time, a part of the second flow channel 102 is arranged inside the short side wall where the liquid outlet 152 is arranged, and another part of the second flow channel 102 is arranged inside the bottom wall 110, and these two parts are connected to each other to jointly form the second flow channel 102. Through the above structural design, the present utility model can extend the distance between the liquid collecting hole 111 and the liquid outlet hole, which is beneficial to extending the extension length of the second flow channel 102 and further optimizing the heat dissipation effect. It should be noted that the extending direction of the long side in this embodiment is the same as the arrangement direction of the single battery 310, that is, the second direction is the same as the first direction X. In some embodiments, when the bottom wall 110 is rectangular, the extending direction of its long side may also be different from the arrangement direction of the single battery 310. For example, the first direction X and the second direction may also be perpendicular, and it is not limited to this embodiment.

[0056] Based on the structural design where the liquid collecting hole 111 is arranged on the bottom wall 110, in an embodiment of the present utility model, the bottom wall 110 can adopt a liquid cooling plate, and the liquid collecting hole 111 is arranged on the liquid cooling plate. Among them, the inside of the liquid cooling plate has a heat exchange flow channel, and this heat exchange flow channel constitutes at least a part of the second flow channel 102. The heat exchange flow channel can be serpentine, meandering, etc., and accordingly, it can further expand the distribution area and length of the second flow channel 102 on the bottom wall, so as to improve the heat exchange effect with the bottom of the battery module. Through the above structural design, the present utility model can use the liquid cooling plate to realize the heat dissipation of the bottom of the battery module and further improve the battery heat dissipation effect.

[0057] As Figure 2As shown, in an embodiment of the present utility model, the liquid collecting holes 111 can be at least two (for example, but not limited to the two shown in the drawings). In some embodiments, the liquid collecting hole 111 can also be only one, and this embodiment is not limiting.

[0058] In an embodiment of the present utility model, the coolant can adopt a fluorinated liquid. Through the above design, in addition, when the coolant adopts a fluorinated liquid, due to the low boiling point characteristic of the fluorinated liquid, when the temperature of the battery module immersed in the fluorinated liquid exceeds the boiling point of the fluorinated liquid, the phase change process of the fluorinated liquid can quickly absorb a large amount of heat from the battery, and can inhibit the occurrence of thermal runaway of the battery.

[0059] It should be noted here that the battery cassette shown in the drawings and described in this specification is only a few examples of the many battery cassettes that can adopt the principle of the present utility model. It should be clearly understood that the principle of the present utility model is by no means limited to any details or any components of the battery cassette shown in the drawings or described in this specification.

[0060] In summary, the battery cassette proposed by the present utility model includes a box body 100, the box body 100 includes a plurality of box walls, the plurality of box walls include a bottom wall 110 and side walls 120 provided on the bottom wall 110; at least one side wall 120 is a jet side wall 130, the inside of the jet side wall 130 has a first flow channel 101, one end of the first flow channel 101 is connected with a liquid inlet 151, a jet hole 131 is provided on the inner wall surface of the jet side wall 130, and the jet hole 131 is communicated with the other end of the first flow channel 101; at least one box wall has a second flow channel 102 inside, one end of the second flow channel 102 is connected with a liquid outlet 152, a liquid collecting hole 111 is provided on the inner wall surface of the box wall, and the liquid collecting hole 111 is communicated with the other end of the second flow channel 102; both the first flow channel 101 and the second flow channel 102 are used for circulating the coolant so that the battery module is immersed in the coolant in the battery compartment. Since the inside of the box body 100 is a sealed structure, the pressure in the battery compartment will increase after the coolant enters the battery compartment through the first flow channel 101, forcing the coolant to flow to the second flow channel 102 through the liquid collecting hole 111. Through the above structural design, the present utility model can use the jet holes 131 provided on the jet side wall 130 to realize the efficient cooling of the side surface of the battery module by the jet of the coolant, and can realize the immersion cooling of the battery module, thereby being beneficial to providing a better heat dissipation effect, significantly improving the heat dissipation efficiency under the same coolant inlet volume, and at the same time being able to ensure the temperature consistency of the battery during charging and discharging, effectively inhibiting thermal runaway, and being beneficial to improving the product competitiveness of the battery cassette.

[0061] Based on the above detailed description of several exemplary embodiments of the battery cassette proposed by the present utility model, the following will describe an exemplary embodiment of the electrical equipment proposed by the present utility model.

[0062] As Figure 1 shown, in an embodiment of the present utility model, the electrical equipment proposed by the present utility model includes the battery cassette proposed by the present utility model and described in detail in the above embodiment.

[0063] It should be noted here that the electrical equipment shown in the drawings and described in this specification is only a few examples of the many types of electrical equipment that can adopt the principles of the present utility model. It should be clearly understood that the principles of the present utility model are by no means limited to any details or any components of the electrical equipment shown in the drawings or described in this specification.

[0064] In summary, for the electrical equipment proposed by the present utility model, by adopting the battery cassette proposed by the present utility model, the heat dissipation efficiency of the battery cassette can be improved, and at the same time, the temperature consistency of the battery cassette can be ensured, effectively suppressing thermal runaway.

[0065] The above has described and / or illustrated in detail the exemplary embodiments of the battery cassette and the electrical equipment proposed by the present utility model. However, the embodiments of the present utility model are not limited to the specific embodiments described herein. On the contrary, the components and / or steps of each embodiment can be used independently and separately from the other components and / or steps described herein. Each component and / or each step of one embodiment can also be combined with the other components and / or steps of other embodiments. When introducing the elements / components / etc. described and / or illustrated herein, the terms "a", "one", and "above-mentioned", etc. are used to indicate the existence of one or more elements / components / etc. The terms "comprising", "including", and "having" are used to mean an open inclusion and mean that there may be additional elements / components / etc. in addition to the listed elements / components / etc. In addition, the terms "first" and "second", etc. in the claims and the specification are only used as labels and are not numerical limitations on their objects.

[0066] Although the battery cassette and the electrical equipment proposed by the present utility model have been described according to different specific embodiments, those skilled in the art will recognize that modifications can be made to the implementation of the present utility model within the spirit and scope of the claims.

Claims

1. A battery cassette, characterized in that: It includes a box body and a cover plate. The box body has a battery compartment for accommodating a battery module. The cover plate is arranged on the top of the box body to ensure the sealing inside the box body. The box body includes a plurality of box walls, and the plurality of box walls include a bottom wall and side walls arranged on the bottom wall; At least one of the side walls is a jet side wall. The inside of the jet side wall has a first flow channel. One end of the first flow channel is connected to a liquid inlet. The inner wall surface of the jet side wall facing the battery compartment is provided with jet holes, and the jet holes are connected to the other end of the first flow channel; At least one of the box walls has a second flow channel. One end of the second flow channel is connected to a liquid outlet. The inner wall surface of the box wall facing the battery compartment is provided with liquid collection holes, and the liquid collection holes are connected to the other end of the second flow channel; Wherein, both the first flow channel and the second flow channel are used for circulating a coolant so that the battery module is immersed in the coolant in the battery compartment.

2. The battery cassette according to claim 1, wherein A plurality of the jet holes are provided on the inner wall surface of the jet side wall.

3. The battery cassette according to claim 2, wherein The plurality of jet holes provided on the same jet side wall are divided into multiple columns arranged at intervals in the horizontal direction, and each column includes at least two jet holes arranged at intervals in the vertical direction.

4. The battery cassette according to claim 3, characterized in that: The plurality of jet holes provided on the same jet side wall are divided into at least three columns, and the columns are arranged at uniform intervals; and / or Each column includes at least three jet holes, and the jet holes in the same column are arranged at uniform intervals; and / or The number of jet holes in each column is equal.

5. The battery cassette according to claim 1, wherein The battery module includes battery rows, and each battery row includes a plurality of single cells arranged in a first direction; wherein, the jet side wall is a side wall parallel to the first direction.

6. The battery cassette according to claim 1, wherein, The bottom wall is rectangular and has two long sides and two short sides. The box body includes four side walls, and the four side walls are respectively two long side walls and two short side walls. The two long side walls are respectively connected to the two long sides, and the two short side walls are respectively connected to the two short sides; wherein, among the four side walls, only two long side walls are the jet side walls, and the liquid inlet and the liquid outlet are arranged on the short side walls.

7. The battery cassette according to claim 6, wherein The liquid inlet and the liquid outlet are arranged on the same short side wall.

8. The battery cassette according to claim 7, characterized in that, The extending direction of the long side is the second direction. The liquid collection holes are arranged on the bottom wall, and the liquid collection holes are located at one end of the bottom wall away from the short side wall provided with the liquid outlet in the second direction.

9. The battery cassette according to claim 1, wherein The bottom wall is a liquid cooling plate, the liquid collection holes are arranged on the liquid cooling plate, and the liquid cooling plate has a heat exchange flow channel inside, and the heat exchange flow channel constitutes at least a part of the second flow channel.

10. An electrical device, characterized in that, It includes a battery module and the battery cassette according to any one of claims 1 to 9. The battery module is accommodated in the battery compartment of the battery cassette and is immersed in the coolant.

Images