Battery box body, battery pack and electric equipment

Abstract

The utility model relates to a battery box body, a battery pack and electric equipment, the battery box body comprises a bottom plate, a frame and a shunting device, the frame is arranged on the bottom plate, the frame and the bottom plate define a containing space, the containing space is provided with a plurality of separated battery cell containing cavities, the shunting device is connected to the frame, or at least part of the structure of the shunting device is a part of the frame; the heat exchange structure comprises a shunting cavity, a main water inlet pipe, a main water outlet pipe, a plurality of sub water inlet pipes and a plurality of sub water outlet pipes, the main water inlet pipe and the main water outlet pipe are used for communicating with the shunting cavity, and each sub water inlet pipe and each sub water outlet pipe are respectively used for communicating the shunting cavity with the heat exchange structure in the corresponding battery cell accommodating cavity. The number of pipelines between the battery pack and the external device is reduced, the structure of the battery pack is simplified, and the battery pack can be conveniently arranged in electric equipment. The number of pipelines between the battery pack and the external heat exchange system is reduced, the structures of the whole battery pack and the electric equipment are simplified, and the battery pack can be conveniently arranged in the electric equipment.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of battery pack, in particular, to a battery box, a battery pack and an electric device. BACKGROUND

[0002] With the development of electric vehicle technology, the design and manufacture of battery packs are also constantly improving to meet higher performance requirements and more extensive market demand. For example, the battery pack heat exchange system (such as liquid cooling) technology field develops rapidly and becomes a key technology for electric vehicle thermal management. How to simplify the structural complexity and arrangement difficulty of the system for heat exchange of the battery pack has become a research direction of the battery pack. CONTENT OF THE UTILITY MODEL

[0003] The present disclosure provides a battery box, a battery pack and an electric device to at least partially overcome the problems in the related art.

[0004] According to a first aspect of the present disclosure, a battery box is provided, comprising a bottom plate, a frame and a shunt device;

[0005] The frame is arranged on the bottom plate and encloses a containing space with the bottom plate, and the containing space has a plurality of separated battery cell containing cavities;

[0006] The shunt device is connected to the frame or at least part of the structure of the shunt device is configured as part of the frame, and comprises a shunt cavity, a total water inlet pipe, a total water outlet pipe, a plurality of sub-water inlet pipes and a plurality of sub-water outlet pipes;

[0007] The total water inlet pipe and the total water outlet pipe are both used to communicate with the shunt cavity, and each sub-water inlet pipe and each sub-water outlet pipe are respectively used to communicate the heat exchange structure in the shunt cavity and the corresponding battery cell containing cavity.

[0008] Optionally, the shunt device is provided with a valve, which is used to selectively control the communication or interruption of the total water inlet pipe and the plurality of sub-water inlet pipes; and / or,

[0009] The valve is used to selectively control the communication or interruption of the total water outlet pipe and the plurality of sub-water outlet pipes.

[0010] Optionally, the valve is also used to control the flow of at least one of the total water inlet pipe, the sub-water inlet pipe, the total water outlet pipe and the sub-water outlet pipe.

[0011] Optionally, the frame comprises a main body frame, which is configured as a notched annular frame, and the shunt device comprises a main body part, which is installed in the notch and encloses the frame together with the main body frame;

[0012] The shunt cavity, the total water inlet pipe, the total water outlet pipe, the sub water inlet pipe and the sub water outlet pipe are arranged in the main body part.

[0013] Optionally, the shunt cavity comprises two open ends in the first direction, and the main body part further comprises two blocking members, each blocking member being configured to block a corresponding open end and being connected to the main frame.

[0014] Optionally, the blocking member is welded to the main frame.

[0015] Optionally, the total water inlet pipe and the total water outlet pipe are arranged at a middle portion of the main body part along the first direction; and / or,

[0016] The sub water inlet pipe and the sub water outlet pipe arranged in the same electric cell accommodating cavity are arranged in alignment along the first direction.

[0017] Optionally, the electric cell box further comprises at least one partition beam.

[0018] The number of the electric cell accommodating cavities is two, the two electric cell accommodating cavities are arranged in a spaced manner along the first direction, and the two electric cell accommodating cavities are separated by the partition beam.

[0019] The frame comprises a first sub-frame segment extending along the first direction, and the shunt device is arranged in the first sub-frame segment.

[0020] Optionally, along the first direction, the shunt device is arranged at a middle portion of the first sub-frame segment.

[0021] Optionally, the sub water inlet pipe in the two electric cell accommodating cavities is arranged in a symmetrical manner about a center of the main body part along the first direction; and / or,

[0022] The sub water outlet pipe in the two electric cell accommodating cavities is arranged in a symmetrical manner about the center of the main body part along the first direction.

[0023] According to a second aspect of the present disclosure, a battery pack is provided, comprising the battery box, a plurality of heat exchange structures and a plurality of battery modules as described above.

[0024] Each of the battery modules and each of the heat exchange structures is arranged in a corresponding electric cell accommodating cavity, each of the heat exchange structures is configured to exchange heat with a corresponding battery module, and each of the heat exchange structures is in communication with a corresponding sub water inlet pipe and a sub water outlet pipe.

[0025] Optionally, the heat exchange structure comprises a first heat exchange plate, the first heat exchange plate being adapted to be arranged at a side portion of the battery module for exchanging heat with the side portion of the battery module.

[0026] Optionally, the heat exchange structure comprises a second heat exchange plate, which is adapted to be arranged at the bottom of the battery module, and is used for heat exchange with the bottom of the battery module.

[0027] According to a third aspect of the present disclosure, a power consuming device is provided, comprising a device body and a battery pack as described above, the battery pack being mounted to the device body and being used to supply power to the battery pack.

[0028] By the above technical solution, since the shunt device comprises the shunt cavity, the total water inlet pipe, the total water outlet pipe, the plurality of sub water inlet pipes and the plurality of sub water outlet pipes, thus, by the total water inlet pipe, the total water outlet pipe and the shunt device, the plurality of heat exchange structures in the battery pack can be connected with the external heat exchange system (such as an air conditioning system), which is conducive to reducing the number of pipelines between the battery pack and the external heat exchange system, simplifying the structure of the entire battery pack and the power consuming device, and is conducive to simplifying the structural complexity and arrangement difficulty of the system for heat exchange of the battery pack, thereby facilitating the arrangement of the battery pack in the power consuming device (such as a vehicle).

[0029] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0030] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present disclosure and, together with the specification, serve to explain the principles of the present disclosure.

[0031] Figure 1 is a schematic diagram of the battery box provided by an exemplary embodiment of the present disclosure.

[0032] Figure 2 is a schematic diagram of the shunt device of the battery box provided by an exemplary embodiment of the present disclosure.

[0033] Figure 3 is a schematic diagram of the shunt device of the battery box provided by an exemplary embodiment of the present disclosure.

[0034] Figure 4 is a schematic diagram of the shunt device of the battery box provided by an exemplary embodiment of the present disclosure, and Figure 2 the viewing angle is different.

[0035] EXPLANATION OF REFERENCE NUMERALS

[0036] 100 - battery box; 1 - bottom plate; 2 - frame; 21 - main frame; 22 - first sub-frame section; 3 - shunt device; 31 - main water inlet pipe; 32 - main water outlet pipe; 33 - sub water inlet pipe; 34 - sub water outlet pipe; 35 - shunt cavity; 36 - main body; 37 - blocking piece; 4 - partition beam; 5 - containing space; 51 - cell containing cavity. DETAILED DESCRIPTION

[0037] The specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0038] In the present disclosure, the orientation words such as "upper", "lower", "left", "right", etc. used without the opposite description indicate the orientation or positional relationship defined based on the drawing shown in the drawing, which is only for the convenience of describing the present disclosure and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, and a specific orientation configuration and operation, and therefore cannot be understood as a limitation on the present disclosure. The terms "inner" and "outer" refer to the inner and outer of the corresponding structure profile. The "first direction" and "second direction" can refer to the first direction and second direction shown in the drawings. Figure 1

[0039] In addition, it should be noted that the terms such as "first", "second" are used to distinguish one element from another element, and do not have sequentiality and importance. In addition, in the description with reference to the drawings, the same reference signs in different drawings represent the same elements.

[0040] In the description of the present disclosure, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "connected", "connected", "mounted" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0041] In the related art, the battery pack has only one cell containing cavity, and only one total water inlet and outlet. For the embodiment in which the battery pack includes multiple battery modules and the cell containing cavity is multiple, for example, for a double-bank battery pack, multiple total water inlets and multiple total water outlets need to be set, and at the same time, the vehicle water pipe outside the battery pack needs to be matched with two water inlets and two water outlets simultaneously, which increases the complexity and difficulty of system arrangement, and is not conducive to the arrangement of the battery pack in the electrical equipment (such as a vehicle).

[0042] In view of this, as Figures 1 to 4 ​As shown, according to the first aspect of the present disclosure, a battery box 100 is provided, comprising a bottom plate 1, a frame 2 and a shunt device 3, the frame 2 is arranged on the bottom plate 1 and enclosed with the bottom plate 1 to form a containing space 5, the containing space 5 has a plurality of separated battery cell containing cavities 51,

[0043] The shunt device 3 is connected to the frame 2 or at least part of the shunt device 3 is configured as part of the frame 2, the shunt device 3 comprises a shunt cavity 35, a total water inlet pipe 31, a total water outlet pipe 32, a plurality of sub water inlet pipes 33 and a plurality of sub water outlet pipes 34.

[0044] The total water inlet pipe 31 and the total water outlet pipe 32 are both used to communicate with the shunt cavity 35, each sub water inlet pipe 33 and each sub water outlet pipe 34 are respectively used to communicate the shunt cavity 35 with the heat exchange structure in the corresponding battery cell containing cavity 51, that is, one end of the total water inlet pipe 31 and one end of the total water outlet pipe 32 are used to communicate with the shunt cavity 35, the other end of the total water inlet pipe 31 and the other end of the total water outlet pipe 32 can be used for an external heat exchange system (such as a vehicle air conditioning system), one end of the sub water inlet pipe 33 and one end of the sub water outlet pipe 34 are used to communicate with the shunt cavity 35, the other end of the sub water inlet pipe 33 and the other end of the sub water outlet pipe 34 are used to communicate with the heat exchange structure in the corresponding battery cell containing cavity 51, and each battery cell containing cavity 51 corresponds to at least one sub water inlet pipe 33 and one sub water outlet pipe 34.

[0045] In the present disclosure, each battery module can include one or more battery cells stacked with each other, and the number of battery cells of different battery modules can be the same or different, which is not limited in the present disclosure.

[0046] Optionally, as shown, Figure 1 As shown, the battery box 100 can include at least one partition beam 4, and the at least one partition beam 4 can be arranged in the containing space 5 to divide the containing space 5 into a plurality of battery cell containing cavities 51.

[0047] When the above-mentioned battery box 100 is applied to a battery pack, a plurality of battery modules in the battery pack can be arranged in a plurality of battery cell containing cavities 51 in the battery box 100 respectively, and the device main body is powered, the battery box 100 can realize the fixation of the battery modules in the electric device, and the battery modules will not shake during use, and the safety of the battery pack is good.

[0048] By the technical scheme, since the flow splitting device 3 comprises the flow splitting cavity 35, the total water inlet pipe 31, the total water outlet pipe 32, the plurality of sub water inlet pipes 33 and the plurality of sub water outlet pipes 34, thus, by the total water inlet pipe 31, the total water outlet pipe 32 and the flow splitting device 3, the plurality of heat exchange structures in the battery pack can be connected with the external heat exchange system (such as the air conditioning system), which is beneficial to reduce the number of pipelines between the battery pack and the external heat exchange system, simplify the structure of the whole battery pack and the electric equipment, and is beneficial to simplify the structure complexity and arrangement difficulty of the system for heat exchange of the battery pack, thereby facilitating the arrangement of the battery pack in the electric equipment (such as a vehicle).

[0049] In addition, by reasonably designing the flow splitting device 3, for example, changing the shape of the flow splitting cavity 35 or arranging a valve in the flow splitting device 3, the flow splitting device 3 can have the ability to control the flow, and the flow splitting device 3 can control the flow to the different sub water inlet pipes 33, so that the different heat exchange structures have different heat exchange capabilities.

[0050] In order to enable the flow splitting device 3 to control the flow, optionally, a valve (such as an electric control valve) is arranged in the flow splitting device 3, and the valve is used to selectively control the communication or interruption of the total water inlet pipe 31 and the plurality of sub water inlet pipes 33. In this way, when the battery modules in the battery pack do not need to be heat exchanged, the valve can realize the interruption between the total water inlet pipe 31 and the plurality of sub water inlet pipes 33, at this time, the flow is blocked by the valve and cannot flow to the heat exchange structures arranged in the battery cell accommodating cavities 51 through the plurality of sub water inlet pipes 33.

[0051] When all the battery modules in the battery pack need to be heat exchanged, the valve can realize the communication between the total water inlet pipe 31 and the plurality of sub water inlet pipes 33, at this time, the flow can flow to the heat exchange structures arranged in the battery cell accommodating cavities 51 through the plurality of sub water inlet pipes 33 and be heat exchanged with the battery modules.

[0052] In addition, when part of the battery modules in the battery pack need to be heat exchanged, and another part of the battery modules do not need to be heat exchanged, the valve can also realize the communication between the total water inlet pipe 31 and part of the sub water inlet pipes 33, and realize the interruption between the total water inlet pipe 31 and another part of the sub water inlet pipes 33, so as to realize the heat exchange of part of the battery modules in the battery pack, and further meet the different heat exchange requirements of the battery modules in different regions of the battery pack.

[0053] Optionally, the valve is also used to selectively control the communication or interruption of the total water outlet pipe 32 and the plurality of sub water outlet pipes 34. In this way, when the battery modules in the battery pack do not need to be heat exchanged, the valve can realize the interruption between the total water outlet pipe 32 and the plurality of sub water outlet pipes 34, at this time, the flow is blocked by the valve and cannot flow out of the heat exchange structures arranged in the battery cell accommodating cavities 51 through the plurality of sub water outlet pipes 34.

[0054] When all the battery modules in the battery pack need heat exchange, the valve can realize the communication between the total water outlet pipe 32 and the plurality of sub-water outlet pipes 34, at this time, the fluid can flow to the heat exchange structure arranged in the battery cell accommodating cavity 51 through the plurality of sub-water outlet pipes 34 and exchange heat with the battery module.

[0055] In addition, when part of the battery modules in the battery pack need heat exchange, and the other part of the battery modules do not need heat exchange, the valve can also realize the communication between the total water outlet pipe 32 and part of the sub-water outlet pipes 34, and realize the blockage between the total water outlet pipe 32 and the other part of the sub-water outlet pipes 34, so as to realize the heat exchange of part of the battery modules in the battery pack, and further meet the different heat exchange needs of the battery modules in different areas of the battery pack.

[0056] Here, it needs to be explained that the above-mentioned valve can be used alone to control the communication or blockage between the total water inlet pipe 31 and the plurality of sub-water inlet pipes 33 or between the total water outlet pipe 32 and the plurality of sub-water outlet pipes 34, the above-mentioned valve can control the communication or blockage between the total water inlet pipe 31 and the plurality of sub-water inlet pipes 33 and between the total water outlet pipe 32 and the plurality of sub-water outlet pipes 34 at the same time, and the present disclosure does not limit this.

[0057] In order to further meet the heat exchange needs of different battery modules in the battery pack, optionally, the above-mentioned valve is also used to control the flow of at least one of the total water inlet pipe 31, the sub-water inlet pipe 33, the total water outlet pipe 32 and the sub-water outlet pipe 34. In this way, by controlling the valve, the flow control of at least one of the total water inlet pipe 31, each sub-water inlet pipe 33, the total water outlet pipe 32 and each sub-water outlet pipe 34 can also be realized, so that the further distribution of the flow can be carried out according to the heat exchange needs of the battery modules.

[0058] For example, when the heat exchange needs of the plurality of battery modules in the battery pack are small, the flow through the total water inlet pipe 31 and / or the total water outlet pipe 32 can be reduced by the valve, at this time, the flow of the fluid through the heat exchange structure is small, which can meet the small heat exchange needs of the plurality of battery modules.

[0059] When the heat exchange needs of the plurality of battery modules in the battery pack are all large, the flow through the total water inlet pipe 31 and / or the total water outlet pipe 32 can be increased by the valve, at this time, the flow of the fluid through the heat exchange structure is large, which can meet the large heat exchange needs of the plurality of battery modules.

[0060] In addition, when the heat exchange needs of the plurality of battery modules in the battery pack are different, the flow through different sub-water inlet pipes 33 and / or sub-water outlet pipes 34 can be controlled by the valve, at this time, the flow of the fluid to different heat exchange structures is different, which can also meet the different heat exchange needs of the different battery modules in the battery pack.

[0061] The present disclosure does not limit the relationship between the shunt device 3 and the frame 2, and the shunt device 3 can be a part of the frame 2 or can be mounted on the frame 2 as long as the use requirements of the battery pack are met. As an embodiment of the present disclosure, the shunt device 3 can be a part of the frame 2, or at least part of the shunt device 3 can belong to a part of the frame 2. As shown in Figure 1 The frame 2 includes a main frame 21 configured as a notched annular frame, and the shunt device 3 includes a main body 36 mounted in the notch and jointly enclosed with the main frame 21 to form the frame 2. The shunt cavity 35, the main water inlet pipe 31, the main water outlet pipe 32, the sub water inlet pipe 33 and the sub water outlet pipe 34 are all arranged in the main body 36.

[0062] At least part of the shunt device 3 is configured as a part of the frame 2, which has the effect of one for two, is conducive to the lightweight of the battery box 100, and the shunt device 3 is separately processed and mounted on the annular frame, that is, the shunt device 3 and the main frame 21 are separately processed, which has the following effects: on the one hand, the structure inside the shunt device 3 can be flexibly designed according to needs, which is conducive to simplifying the processing difficulty of the shunt device 3 and the battery box 100, and the assembly of the battery box 100 can be realized by only fixing the shunt device 3 on the frame 2; on the other hand, the separately arranged shunt device 3 can also be applied to battery boxes 100 of various shapes and sizes, and the versatility of the shunt device 3 is high.

[0063] In addition, if the shunt device 3 is damaged during use, the shunt device 3 can be replaced without replacing the entire battery box 100, which also helps to reduce the use cost of the battery pack using the shunt device 3.

[0064] Here, it should be noted that the present disclosure does not limit the specific structure of the shunt device 3, and as an embodiment of the present disclosure, as shown in Figures 2 to 4 The shunt cavity 35 includes two open ends in the first direction, and the main body 36 further includes two blocking members 37, each blocking member 37 being used to block the corresponding open end and being connected with the main frame 21. In other words, the shunt cavity 35 penetrates through the main body 36 of the entire shunt device 3 and is blocked by the blocking member 37, and the blocking member 37 can block the shunt cavity 35 to avoid the leakage of fluid from the two open ends of the shunt cavity 35.

[0065] In addition, the shunt cavity 35 penetrating through the main body 36 of the entire shunt device 3 is relatively simple to process, which is conducive to reducing the production and manufacturing cost of the shunt device 3.

[0066] The connection relationship between the shunt device 3 and the main frame 21 is not limited in the present disclosure, and as an embodiment of the present disclosure, the sealing member 37 of the shunt device 3 is welded to the main frame 21. The connection between the shunt device 3 and the main frame 21 by welding has good sealing performance, is more reliable, has high strength, and the frame of the battery box 100 can meet the use requirements of the battery pack.

[0067] As another embodiment of the present disclosure, the shunt device 3 can also be bonded to the main frame 21, which is not limited in the present disclosure.

[0068] It should be noted that the present disclosure does not limit the specific positions of the total water inlet pipe 31 and the total water outlet pipe 32 on the shunt device 3, as long as the total water inlet pipe 31 and the total water outlet pipe 32 can be connected to the shunt cavity 35. As an embodiment of the present disclosure, as shown in Figure 1 and Figure 2 , the total water inlet pipe 31 and the total water outlet pipe 32 are located in the middle of the main part 36 along the first direction. In this way, on the one hand, the weight distribution of the shunt device 3 is more uniform, which is conducive to improving the balance of the battery pack using the shunt device 3. On the other hand, the total water inlet pipe 31 and the total water outlet pipe 32 arranged in the middle reduce the stress concentration of the shunt device 3, improve the stability and rigidity of the shunt device 3, and have high aesthetics.

[0069] Here, it should be noted that the present disclosure does not limit the specific positional relationship between the total water inlet pipe 31 and the total water outlet pipe 32. The total water inlet pipe 31 can be located above the total water outlet pipe 32, and the total water outlet pipe 32 can also be located below the total water outlet pipe 32. As an embodiment of the present disclosure, the total water inlet pipe 31 is located above the total water outlet pipe 32. In this way, when the fluid flows in through the total water inlet pipe 31 and flows out through the total water outlet pipe 32, the gravity of the fluid itself will also drive the fluid to flow to the total water outlet pipe 32. Therefore, only a small pressure is required to drive the fluid to move, which is conducive to reducing the energy consumption required to drive the fluid to flow, thereby reducing the cost of heat exchange of multiple battery modules in the battery pack.

[0070] Here, it should be noted that the present disclosure does not limit the specific positions of the plurality of sub-water inlet pipes 33 and the plurality of sub-water outlet pipes 34 on the shunt device 3. Optionally, as shown in Figure 1 , Figure 3 and Figure 4 , the sub-water inlet pipe 33 and the sub-water outlet pipe 34 located in the same cell accommodating cavity 51 are arranged in alignment in the first direction. In this way, on the one hand, the sub-water inlet pipe 33 and the sub-water outlet pipe 34 aligned in the first direction are conducive to improving the weight balance of the shunt device 3, thereby being conducive to improving the balance of the battery pack using the shunt device 3.

[0071] On the other hand, the alignment of the sub-inlet pipe 33 and the sub-outlet pipe 34 also reduces the stress concentration of the flow distribution device 3, improves the stability and rigidity of the flow distribution device 3, and has high aesthetic appearance.

[0072] The number of the battery cell accommodating cavities 51 arranged in the battery box 100 is not limited in the present disclosure, as long as the battery cell accommodating cavities 51 can meet the arrangement requirements of the battery modules in the battery pack. As an embodiment of the present disclosure, the number of the battery cell accommodating cavities 51 is two, the two battery cell accommodating cavities 51 are arranged in the first direction, and the two battery cell accommodating cavities 51 are separated by a separation beam 4 which can extend in the second direction. The frame 2 comprises a first sub-frame segment 22 extending in the first direction, and the flow distribution device 3 is arranged on the first sub-frame segment 22. Since the two battery cell accommodating cavities 51 are arranged in the first direction, and the flow distribution device 3 is arranged on the first sub-frame segment 22 extending in the first direction. In other words, the flow distribution device 3 is arranged on one side of the two battery cell accommodating cavities 51, so that the connection between the flow distribution device 3 and the heat exchange structure arranged in different battery cell accommodating cavities 51 can be realized by a relatively short pipeline. In this way, on the one hand, it is beneficial to reduce the cost increase caused by the longer pipeline; on the other hand, it is also convenient for the arrangement of the pipeline of the flow distribution device 3 and the heat exchange structure in the battery cell accommodating cavities 51, and the compactness of the battery pack is higher.

[0073] Optionally, as shown in Figure 1 , in the first direction, the flow distribution device 3 is arranged in the middle of the first sub-frame segment 22. In other words, the flow distribution device 3 is arranged between the two battery cell accommodating cavities 51, and the distance between the flow distribution device 3 arranged between the two battery cell accommodating cavities 51 and the two battery cell accommodating cavities 51 is relatively short. This is beneficial to further reduce the length of the connecting pipeline between the flow distribution device 3 and the heat exchange structure arranged in the two battery cell accommodating cavities 51 respectively. In this way, on the one hand, it is beneficial to reduce the cost increase caused by the longer pipeline; on the other hand, it is also convenient for the arrangement of the pipeline of the flow distribution device 3 and the heat exchange structure in the battery cell accommodating cavities 51, and the compactness of the battery pack is higher.

[0074] Optionally, as shown in Figure 1 , Figure 3 and Figure 4 , the sub-inlet pipes 33 in the above-mentioned two battery cell accommodating cavities 51 are symmetrically arranged about the center of the main body 36 in the first direction. In this way, the weight distribution of the two sub-inlet pipes 33 on the flow distribution device 3 is more uniform, thereby being beneficial to improve the balance of the battery pack applied with the flow distribution device 3.

[0075] Optionally, as shown in Figure 1 , Figure 3 and Figure 4As shown, the sub water outlet pipes 34 in the two above-mentioned battery cell accommodating cavities 51 can also be arranged in central symmetry about the center of the main body part 36 in the first direction. In this way, the weight distribution of the two sub water outlet pipes 34 on the flow distribution device 3 is more uniform, thereby facilitating the improvement of the balance of the battery pack to which the flow distribution device 3 is applied.

[0076] According to a second aspect of the present disclosure, a battery pack is provided, comprising the battery box 100, a plurality of heat exchange structures, and a plurality of battery modules, each battery module and each heat exchange structure are arranged in a corresponding battery cell accommodating cavity 51, each heat exchange structure is used for heat exchange with the corresponding battery module, and each heat exchange structure is in communication with the corresponding sub water inlet pipe 33 and the sub water outlet pipe 34. The plurality of battery modules are connected in series and / or in parallel with each other, and can realize the power supply of the device main body of the power utilization equipment to which the battery pack is applied.

[0077] In addition, the plurality of heat exchange structures can also respectively perform heat exchange on the plurality of battery modules, and the battery modules can always operate within a suitable temperature range, and the safety and service life of the battery modules are higher.

[0078] The battery pack has all the beneficial effects of the above-mentioned battery box 100, which will not be described here again.

[0079] It should be noted that the present disclosure does not limit the specific structure of the above-mentioned heat exchange structure, and as an embodiment of the present disclosure, the above-mentioned heat exchange structure can comprise a first heat exchange plate adapted to be arranged at the side of the battery module for heat exchange with the side of the battery module. The first heat exchange plate arranged at the side (such as the electrode side of the battery cell) of the battery module can perform heat exchange with the battery module, thereby being capable of dissipating or heating the battery module, facilitating the battery module to always operate within a suitable temperature range, and the safety and service life of the battery module are higher.

[0080] Alternatively, the above-mentioned heat exchange structure can also comprise a second heat exchange plate adapted to be arranged at the bottom of the battery module and used for heat exchange with the bottom of the battery module. The second heat exchange plate arranged at the bottom of the battery module can perform heat exchange with the battery module, thereby being capable of dissipating or heating the battery module, facilitating the battery module to always operate within a suitable temperature range, and the safety and service life of the battery module are higher.

[0081] Here, it should be noted that the above-mentioned first heat exchange plate and the second heat exchange plate can exist alone for heat exchange with the side or the bottom of the battery module, and the above-mentioned first heat exchange plate and the second heat exchange plate can also exist simultaneously, in this way, the first heat exchange plate and the second heat exchange plate can simultaneously perform heat exchange with the side and the bottom of the battery module, thereby facilitating the improvement of the heat exchange effect of the battery module. As a third aspect of the present disclosure, a power utilization equipment is provided, comprising a device main body and a battery pack as described above, the battery pack is installed on the device main body and is used for power supply to the battery pack.

[0082] The power utilization device has all the beneficial effects of the battery pack described above, which will not be repeated here.

[0083] Here, it should be noted that the specific type of the power utilization device is not limited by the present disclosure, and the power utilization device described above can be a vehicle, a mobile phone, a portable device, a notebook computer, a ship, a spacecraft, an electric toy, and an electric tool, etc. The vehicle can be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile, or an extended range automobile, etc. The electric toy includes a fixed or mobile electric toy, such as a game console, an electric automobile toy, an electric ship toy, and an electric aircraft toy, etc. The electric tool includes a metal cutting electric tool, a grinding electric tool, an assembly electric tool, and a railway electric tool, etc. The present disclosure does not limit this.

[0084] The preferred embodiments of the present disclosure are described in detail above in combination with the accompanying drawings, but the present disclosure is not limited to the specific details in the above-described embodiments. Within the technical concept range of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all belong to the protection range of the present disclosure.

[0085] In addition, it should be noted that each specific technical feature described in the above-described specific embodiments can be combined in any appropriate manner without contradiction, and in order to avoid unnecessary repetition, the present disclosure will not further describe various possible combination manners.

[0086] In addition, various different embodiments of the present disclosure can also be combined in any manner, as long as it does not deviate from the idea of the present disclosure, and it should be considered as disclosed by the present disclosure.

Claims

1. A battery case characterized by comprising: The battery box body comprises a bottom plate, a frame and a shunt device; The frame is arranged on the bottom plate and encloses a containing space with the bottom plate, and the containing space has a plurality of separated battery cell containing cavities; The shunt device is connected to the frame or at least part of the shunt device is configured as a part of the frame, and the shunt device comprises a shunt cavity, a total water inlet pipe, a total water outlet pipe, a plurality of sub water inlet pipes and a plurality of sub water outlet pipes; The total water inlet pipe and the total water outlet pipe are used to communicate with the shunt cavity, and each sub water inlet pipe and each sub water outlet pipe are used to communicate the shunt cavity with the heat exchange structure in the corresponding battery cell containing cavity.

2. The battery pack of claim 1, wherein, The shunt device is provided with a valve for selectively controlling the communication or interruption of the total water inlet pipe and the plurality of sub water inlet pipes; and / or, The valve is used to selectively control the communication or interruption of the total water outlet pipe and the plurality of sub water outlet pipes.

3. The battery pack of claim 2, wherein, The valve is also used to control the flow of at least one of the total water inlet pipe, the sub water inlet pipe, the total water outlet pipe and the sub water outlet pipe.

4. The battery pack of any one of claims 1-3, wherein, The frame comprises a main body frame configured as a notched annular frame, and the shunt device comprises a main body part mounted in the notch and jointly enclosing the frame with the main body frame; The shunt cavity, the total water inlet pipe, the total water outlet pipe, the sub water inlet pipe and the sub water outlet pipe are all arranged in the main body part.

5. The battery pack of claim 4, wherein, The shunt cavity comprises two open ends in the first direction, and the main body part further comprises two sealing members, each of which is used to seal a corresponding open end and is connected to the main body frame.

6. The battery pack of claim 5, wherein, The sealing member is welded to the main body frame.

7. The battery pack of claim 4, wherein, The total water inlet pipe and the total water outlet pipe are located in the middle of the main body part along the first direction; and / or, The sub water inlet pipe and the sub water outlet pipe located in the same battery cell containing cavity are arranged in alignment in the first direction.

8. The battery pack of any one of claims 1-3, wherein, The battery box body further comprises at least one partition beam; The number of battery cell containing cavities is two, and the two battery cell containing cavities are arranged in a spaced manner along the first direction and are separated by one partition beam; The frame comprises a first sub-frame segment extending along the first direction, and the shunt device is arranged in the first sub-frame segment.

9. The battery pack of claim 8, wherein, Along the first direction, the shunt device is arranged in the middle of the first sub-frame segment.

10. The battery pack of claim 8, wherein, The sub water inlet pipes in the two battery cell containing cavities are arranged in a central symmetry about the main body part in the first direction; and / or, The sub water outlet pipes in the two battery cell containing cavities are arranged in a central symmetry about the main body part in the first direction.

11. A battery pack, characterized by The battery box body comprises a battery box body according to any one of claims 1-10, a plurality of heat exchange structures and a plurality of battery modules; Each battery module and each heat exchange structure are arranged in a corresponding battery cell containing cavity, each heat exchange structure is used to exchange heat with a corresponding battery module, and each heat exchange structure communicates with a corresponding sub water inlet pipe and sub water outlet pipe.

12. The battery pack of claim 11, wherein, The heat exchange structure comprises a first heat exchange plate adapted to be arranged on the side of the battery module for heat exchange with the side of the battery module.

13. The battery pack of claim 11, wherein, The heat exchange structure comprises a second heat exchange plate adapted to be arranged at the bottom of the battery module for heat exchange with the bottom of the battery module.

14. An electrical device, characterized by The application further provides a device comprising a device body and a battery pack according to any one of claims 11-13, the battery pack being mounted to the device body and being configured to supply power to the battery pack.

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