Battery pack and electric device

Abstract

The application provides a battery pack and an electric device. The battery pack comprises a box, a battery cell module and a heat transfer assembly. The box is formed with an accommodating cavity. The battery cell module comprises a plurality of battery cells, and the plurality of battery cells are arranged in the accommodating cavity. The heat transfer assembly is connected with the battery cell module, and is used for heat exchange with the battery cell module. At least part of the heat transfer assembly is located outside the accommodating cavity. The battery pack can reduce the volume of the box. After the volume of the box is reduced, the weight is also reduced, and then the weight of the battery pack can be reduced, and the cost of the battery pack is reduced.

Description

TECHNICAL FIELD

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

[0002] The battery pack mainly comprises a box body, and the box body is internally provided with a battery cell module, electrical components, and heat transfer components such as liquid cooling pipes.

[0003] In the related art, the volume of the box body is large, which leads to a large weight of the battery pack. SUMMARY

[0004] Embodiments of the present application provide a battery pack and an electric device, which can solve the technical problem that the volume of the box body is large, which leads to a large weight of the battery pack.

[0005] In a first aspect, embodiments of the present application provide a battery pack, comprising:

[0006] a box body, which is formed with an accommodation cavity;

[0007] a battery cell module, which comprises a plurality of battery cells, and the plurality of battery cells are all arranged in the accommodation cavity;

[0008] a heat transfer component, which is connected with the battery cell module, is used for heat exchange with the battery cell module, and at least part of the heat transfer component is located outside the accommodation cavity.

[0009] In an embodiment, at least part of the heat transfer component is arranged on the outer wall surface of the box body.

[0010] In an embodiment, the battery pack further comprises an electrical component, which is connected with the battery cell module, and at least part of the electrical component is located outside the accommodation cavity.

[0011] In an embodiment, at least part of the electrical component is arranged on the outer wall surface of the box body.

[0012] In an embodiment, the battery pack further comprises a second cover plate, which is connected to the outer wall surface of the box body, a second space is formed between the second cover plate and the outer wall surface of the box body, and at least part of the heat transfer component and / or at least part of the electrical component are located in the second space.

[0013] In an embodiment, the battery pack further comprises a connection row, one end of the connection row is located in the accommodation cavity and is electrically connected with the battery cell module, and the other end of the connection row extends to outside the accommodation cavity and is connected with the electrical component.

[0014] In an embodiment, the box is formed with a first connecting hole in communication with the accommodating cavity, the first connecting hole is opposite to an output pole of the battery cell module, and the other end of the connecting row is arranged in the first connecting hole to be located outside the accommodating cavity.

[0015] In an embodiment, the heat transfer assembly comprises a liquid cooling pipe in communication with the refrigeration flow channel of the battery cell module, and at least part of the liquid cooling pipe is located outside the accommodating cavity.

[0016] In an embodiment, the liquid cooling pipe is arranged in the first connecting hole and is spaced apart from the connecting row.

[0017] In an embodiment, the connecting row comprises a first connecting block and a second connecting block connected in sequence, the first connecting block is arranged in the first connecting hole and connects the second connecting block and the battery cell module, and an installation space is formed between the second connecting block and the outer wall surface of the box.

[0018] The liquid cooling pipe comprises a first secondary pipe and a second secondary pipe connected in sequence, the first secondary pipe is arranged in the first connecting hole and connects the second secondary pipe and the refrigeration flow channel of the battery cell module, and the second secondary pipe is located in the installation space.

[0019] In an embodiment, the electrical assembly comprises a high-voltage connector and a high-voltage plug, the high-voltage connector is arranged on the outer wall surface of the box, the other end of the connecting row is electrically connected to the high-voltage connector, the high-voltage plug is arranged on the outer wall surface of the box, and the other end of the connecting row is electrically connected to the high-voltage connector through the high-voltage plug.

[0020] In an embodiment, the electrical assembly comprises a BMS module, the BMS module is arranged on the outer wall surface of the box, and the battery cell module is electrically connected to the BMS module.

[0021] The box is formed with a second connecting hole in communication with the accommodating cavity, the electrical assembly comprises a connecting wire harness, one end of the connecting wire harness is electrically connected to the battery cell module, the other end of the connecting wire harness is arranged in the second connecting hole and is electrically connected to the BMS module, and at least part of the connecting wire harness is located outside the accommodating cavity.

[0022] In an embodiment, the electrical assembly comprises an MSD module, the MSD module is arranged on the outer wall surface of the box; and / or,

[0023] The electrical assembly comprises a PDU module, and the PDU module is arranged on the outer wall surface of the box.

[0024] In an embodiment, at least part of the electrical components and at least the heat transfer components are arranged at the same outer wall surface of the box, or at least part of the electrical components and at least part of the heat transfer components are arranged at different outer wall surfaces of the box, respectively.

[0025] In an embodiment, the box comprises a body and a top cover, the top cover is connected to the body, the top cover and the body enclose the accommodating cavity, and a sealing member is arranged at the connection between the top cover and the body.

[0026] In a second aspect, embodiments of the present application provide a battery pack.

[0027] The beneficial effects of embodiments of the present application are as follows:

[0028] In embodiments of the present application, the battery cell module is installed in the accommodating cavity of the box, and at least part of the heat transfer components is arranged outside the accommodating cavity, so that at least part of the heat transfer components does not occupy the space of the accommodating cavity, the size of the accommodating cavity can be reduced, and thus the volume of the box can be reduced. After the volume of the box is reduced, the weight is also reduced, and thus the weight of the battery pack can be reduced, and the cost of the battery pack is reduced.

[0029] At the same time, the heat transfer components are arranged outside the accommodating cavity, when the heat transfer components of the battery pack need to be repaired and replaced, the box does not need to be opened, and the maintenance of the battery pack is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0031] Figure 1 is a structural schematic diagram of a battery pack provided by an embodiment of the present application;

[0032] Figure 2 is one of structural exploded schematic diagrams of a battery pack provided by an embodiment of the present application;

[0033] Figure 3 is a structural exploded schematic diagram of a battery pack provided by an embodiment of the present application; Figure 2 is an enlarged schematic diagram of the structure at A in FIG. 8;

[0034] Figure 4 is a structural exploded schematic diagram of a battery pack provided by an embodiment of the present application;

[0035] Figure 5 is a side view of a battery pack provided by an embodiment of the present application;

[0036] Figure 6 is a structural schematic diagram of an electric cell module provided by an embodiment of the present application;

[0037] Figure 7 is a structural schematic diagram of an electric cell module provided by an embodiment of the present application;

[0038] Figure 8 is a side view of an electric cell module provided by an embodiment of the present application;

[0039] Figure 9 is a structural schematic diagram of a battery pack provided by an embodiment of the present application;

[0040] Figure 10 is a sectional view of a battery pack provided by an embodiment of the present application;

[0041] Figure 11 is one of structural schematic diagrams of a bottom plate provided by an embodiment of the present application;

[0042] Figure 12 is another structural schematic diagram of a bottom plate provided by an embodiment of the present application. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application. In addition, it should be understood that the specific implementation manners described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, the orientation words such as "upper" and "lower" generally refer to the upper and lower in the actual use or working state of the device, and specifically refer to the direction of the drawing surface in the drawings; and "inner" and "outer" refer to the contour of the device.

[0044] The battery pack and the electric equipment of the present application will be described below with reference to the drawings. Figures 1 to 12

[0045] According to the embodiments of the first aspect of the present application, as Figure 1 , Figure 2 , Figure 3 and Figure 4 , the battery pack comprises a box body 4, an electric cell module 6 and a heat transfer assembly 9, the box body 4 is formed with an accommodation cavity 41, the electric cell module 6 comprises a plurality of electric cells, the plurality of electric cells are all arranged in the accommodation cavity 41, the heat transfer assembly 9 is connected with the electric cell module 6, the heat transfer assembly 9 is used for heat exchange with the electric cell module 6, and at least part of the heat transfer assembly 9 is located outside the accommodation cavity 41.

[0046] ​According to the battery pack of the embodiment of the present application, the cell module 6 is installed in the accommodating cavity 41 of the box body 4, and at least part of the heat transfer assembly 9 is arranged outside the accommodating cavity 41, so that at least part of the heat transfer assembly 9 does not occupy the space of the accommodating cavity 41, the size of the accommodating cavity 41 can be reduced, and then the volume of the box body 4 can be reduced. After the volume of the box body 4 is reduced, the weight is also reduced, and then the weight of the battery pack can be reduced, and the cost of the battery pack is reduced.

[0047] Meanwhile, the heat transfer assembly 9 is arranged outside the accommodating cavity 41, when the heat transfer assembly 9 of the battery pack needs to be overhauled and replaced, the box body 4 does not need to be opened, and the maintenance of the battery pack is facilitated.

[0048] In some examples, the heat transfer assembly 9 is located outside the accommodating cavity 41, which means that the heat transfer assembly 9 is located at the outer wall surface of the box body 4, or means that the heat transfer assembly 9 is arranged apart from the box body 4.

[0049] In some embodiments, at least part of the heat transfer assembly 9 is arranged at the outer wall surface of the box body 4.

[0050] It can be understood that at least part of the heat transfer assembly 9 is arranged at the outer wall surface of the box body 4, so that at least part of the heat transfer assembly 9 does not occupy the space of the accommodating cavity 41, and the volume of the box body 4 is not affected, and then the volume of the box body 4 can be reduced. When the heat transfer assembly 9 needs to be overhauled, the box body 4 does not need to be opened, and the complexity of the overhaul of the battery pack is reduced.

[0051] In some examples, the heat transfer assembly 9 is arranged at the outer wall surface of the box body 4, which means that the heat transfer assembly 9 is connected to the outer wall surface of the box body 4, or means that the heat transfer assembly 9 is connected to other structures and located at the outer wall surface of the box body 4.

[0052] In some embodiments, as Figure 2 and Figure 3 the battery pack further comprises an electrical assembly 7, the electrical assembly 7 is connected to the cell module 6, and at least part of the electrical assembly 7 is located outside the accommodating cavity 41.

[0053] It can be understood that the cell module 6 is installed in the accommodating cavity 41 of the box body 4, and at least part of the electrical assembly 7 is arranged outside the accommodating cavity 41, so that at least part of the electrical assembly 7 does not occupy the space of the accommodating cavity 41, the size of the accommodating cavity 41 can be reduced, and then the volume of the box body 4 can be reduced. After the volume of the box body 4 is reduced, the weight is also reduced, and then the weight of the battery pack can be reduced, and the cost of the battery pack is reduced.

[0054] Meanwhile, the electrical assembly 7 is arranged outside the accommodating cavity 41, when the electrical assembly 7 of the battery pack needs to be overhauled and replaced, the box body 4 does not need to be opened, and the maintenance of the battery pack is facilitated.

[0055] In some examples, the electrical components 7 are located outside the accommodating cavity 41, which means that the electrical components 7 are located at the outer wall surface of the box body 4, or the electrical components 7 are spaced apart from the box body 4.

[0056] In some embodiments, at least part of the electrical components 7 are arranged at the outer wall surface of the box body 4.

[0057] It can be understood that arranging at least part of the electrical components 7 at the outer wall surface of the box body 4 can prevent the electrical components 7 from occupying the space of the accommodating cavity 41, so as not to affect the volume of the box body 4, thereby reducing the volume of the box body 4. When the electrical components 7 need to be repaired, the box body 4 does not need to be opened, thereby reducing the complexity of the repair of the battery pack.

[0058] In some examples, the electrical components 7 are arranged at the outer wall surface of the box body 4, which means that the electrical components 7 are connected to the outer wall surface of the box body 4, or the electrical components 7 are connected to other structures and located at the outer wall surface of the box body 4.

[0059] In some embodiments, as shown in Figs. 1 and 2, Figure 2 and Figure 3 the battery pack further comprises a first cover plate 8 connected to the outer wall surface of the box body 4, a first space 81 is formed between the first cover plate 8 and the outer wall surface of the box body 4, and at least part of the electrical components 7 are located in the first space 81.

[0060] It can be understood that the first cover plate 8 can cover at least part of the electrical components 7 by cooperating with the outer wall surface of the box body 4, so as to protect the electrical components 7.

[0061] In some examples, the electrical components 7 located outside the accommodating cavity 41 can be entirely located in the first space 81, or partially located in the first space 81.

[0062] In some examples, the first cover plate 8 is sealingly connected to the outer wall surface of the box body 4, so as to reduce the influence of the external environment on the components in the first space 81.

[0063] In some examples, the first cover plate 8 is detachably connected to the outer wall surface of the box body 4, so as to facilitate the repair and replacement of the components in the first space 81.

[0064] In some embodiments, as shown in Figs. 1 and 2, Figure 2 and Figure 3 the battery pack further comprises a connecting row 71, one end of the connecting row 71 is located in the accommodating cavity 41 and electrically connected to the cell module 6, and the other end of the connecting row 71 extends out of the accommodating cavity 41 and connected to the electrical components 7.

[0065] Understandably, one end of the connecting strip 71 extends into the receiving cavity 41 and is electrically connected to the cell module 6, while the other end of the connecting strip 71 is located outside the receiving cavity 41. This allows the connecting strip 71 to electrically connect the cell module and the electrical component 7 together, and allows the electrical component 7 to be placed outside the receiving cavity 41. At the same time, it ensures that at least the other end of the connecting strip 71 does not occupy the space of the receiving cavity 41, which helps to reduce the volume of the casing 4. Furthermore, when the connecting strip 71 needs to be inspected, the casing 4 does not need to be opened, reducing the complexity of battery pack maintenance.

[0066] In some examples, the other end of the connector 71 is electrically connected, for example, to the MSD module 73 or the high-voltage connector 72.

[0067] In some examples, the connection bus 71 includes multiple copper busbars. The number of copper busbars can be adaptively adjusted according to the number of battery cell modules in the battery cell module 6.

[0068] In some embodiments, such as Figure 2 and Figure 3 The housing 4 has a first connection hole 44 that communicates with the receiving cavity 41. The first connection hole 44 is opposite to the output pole of the battery cell module 6. The other end of the connection bar 71 passes through the first connection hole 44 and is located outside the receiving cavity 41.

[0069] It is understandable that by forming a first connection hole 44 in the housing 4, the connection bar 71 can connect the battery cell module 6 and the components outside the housing cavity 41 through the first connection hole 44, so that at least the other end of the connection bar 71 can be located outside the housing cavity 41, thereby helping to reduce the volume of the housing 4.

[0070] It is understandable that the first connection hole 44 and the output pole of the cell module 6 are arranged opposite to each other, so that after one end of the connection bar 71 is connected to the cell module 6, the other end of the connection bar 71 can directly pass through the first connection hole 44 and out of the receiving cavity 41, which facilitates the setting of the connection bar 71.

[0071] In some embodiments, such as Figure 2 and Figure 3 The electrical component 7 includes a high-voltage connector 72, which is located on the outer wall of the housing 4, and the other end of the connector 71 is electrically connected to the high-voltage connector 72.

[0072] It can be understood that the high-voltage connector 72 and the other end of the connection row 71 are both arranged at the outer wall surface of the box body 4, thereby facilitating the connection of the other end of the connection row 71 and the high-voltage connector 72, so that the high-voltage connector 72 can be electrically connected with the battery cell module 6 through the connection row 71. At the same time, the high-voltage connector 72 is arranged at the outer wall surface of the box body 4, that is, the high-voltage connector 72 is located outside the accommodation cavity 41, and the high-voltage connector 72 does not affect the volume of the box body 4, which is beneficial to the miniaturization of the box body 4. Moreover, the high-voltage connector 72 is arranged at the outer wall surface of the box body 4, so when the high-voltage connector 72 needs to be repaired or replaced, the box body 4 does not need to be opened, thereby reducing the complexity of the repair of the battery pack.

[0073] In some embodiments, the electrical assembly 7 includes a high-voltage plug-in connector arranged at the outer wall surface of the box body 4, and the other end of the connection row 71 is electrically connected with the high-voltage connector 72 through the high-voltage plug-in connector.

[0074] It can be understood that the high-voltage connector 72 and the other end of the connection row 71 are both arranged at the outer wall surface of the box body 4, thereby facilitating the connection of the other end of the connection row 71 and the high-voltage connector 72, so that the high-voltage connector 72 can be electrically connected with the battery cell module 6 through the connection row 71. At the same time, the high-voltage connector 72 is arranged at the outer wall surface of the box body 4, that is, the high-voltage connector 72 is located outside the accommodation cavity 41, and the high-voltage connector 72 does not affect the volume of the box body 4, which is beneficial to the miniaturization of the box body 4. Moreover, the high-voltage connector 72 is arranged at the outer wall surface of the box body 4, so when the high-voltage connector 72 needs to be repaired or replaced, the box body 4 does not need to be opened, thereby reducing the complexity of the repair of the battery pack.

[0075] The high-voltage plug-in connector, the other end of the connection row 71 and the high-voltage connector 72 are all located at the outer wall surface of the box body 4, thereby facilitating the connection of the high-voltage plug-in connector, the other end of the connection row 71 and the high-voltage connector 72.

[0076] The high-voltage plug-in connector is located outside the accommodation cavity 41, that is, the high-voltage plug-in connector is located outside the accommodation cavity 41, and the high-voltage plug-in connector does not affect the volume of the box body 4, which is beneficial to the miniaturization of the box body 4.

[0077] The high-voltage plug-in connector is arranged at the outer wall surface of the box body 4, so when the high-voltage plug-in connector needs to be repaired or replaced, the box body 4 does not need to be opened, thereby reducing the complexity of the repair of the battery pack.

[0078] In some embodiments, as Figure 2 and Figure 3 , the electrical assembly 7 includes an MSD module 73 arranged at the outer wall surface of the box body 4.

[0079] It can be understood that the MSD module 73 is arranged at the outer wall surface of the box body 4, that is, the MSD module 73 is located outside the accommodation cavity 41, and the MSD module 73 does not occupy the space of the accommodation cavity 41, thereby facilitating the miniaturization of the box body 4. Moreover, the MSD module 73 is arranged outside the box body 4, so when the MSD module 73 needs to be repaired or replaced, the box body 4 does not need to be opened, thereby reducing the complexity of the repair of the battery pack.

[0080] In some examples, the other end of the connection row 71 is electrically connected with the MSD module 73, so that the MSD module 73 is connected between two battery cell modules 6.

[0081] In some embodiments, as shown in Figure 1 and Figure 5 The electrical assembly 7 comprises a PDU module 74 arranged on the outer wall surface of the box 4.

[0082] It can be understood that, by arranging the PDU module 74 on the outer wall surface of the box 4, i.e. the PDU module 74 is located outside the accommodation cavity 41, the PDU module 74 does not occupy the space of the accommodation cavity 41, thereby facilitating the miniaturization of the volume of the box 4. Moreover, by arranging the PDU module 74 outside the box 4, when the PDU module 74 needs to be repaired or replaced, the box 4 does not need to be opened, thereby reducing the complexity of the repair of the battery pack.

[0083] In some embodiments, as shown in Figure 5 The electrical assembly 7 comprises a BMS module 75 arranged on the outer wall surface of the box 4, and the battery cell module 6 is electrically connected with the BMS module 75.

[0084] It can be understood that, by arranging the BMS module 75 on the outer wall surface of the box 4, i.e. the BMS module 75 is located outside the accommodation cavity 41, the BMS module 75 does not occupy the space of the accommodation cavity 41, thereby facilitating the miniaturization of the volume of the box 4. Moreover, by arranging the BMS module 75 outside the box 4, when the BMS module 75 needs to be repaired or replaced, the box 4 does not need to be opened, thereby reducing the complexity of the repair of the battery pack.

[0085] In some embodiments, as shown in Figure 5 The box 4 is formed with a second connecting hole 45 communicating with the accommodation cavity 41, and the electrical assembly 7 comprises a connecting wire harness, one end of the connecting wire harness is electrically connected with the battery cell module 6, the other end of the connecting wire harness is arranged through the second connecting hole 45 and is electrically connected with the BMS module 75, and at least part of the connecting wire harness is located outside the accommodation cavity 41.

[0086] It can be understood that, by forming the second connecting hole 45 in the box 4, the connecting wire harness can pass through the second connecting hole 45 to connect the battery cell module 6 and the BMS module 75.

[0087] The other end of the connecting wire harness and the BMS module 75 are both located at the outer wall surface of the box 4, thereby facilitating the connection of the other end of the connecting wire harness and the BMS module 75, so that the BMS module 75 can be connected with the battery cell module 6 through the connecting wire harness.

[0088] At least part of the connecting wire harness is located outside the accommodation cavity 41, so that at least part of the connecting wire harness does not affect the volume of the box 4, thereby facilitating the miniaturization of the volume of the box 4.

[0089] At least part of the connection harness is located outside the accommodating cavity 41, when the connection harness needs to be repaired or replaced, the box body 4 does not need to be opened, and the complexity of the battery pack repair is reduced.

[0090] In some embodiments, at least part of the electrical components 7 and at least the heat transfer components 9 are arranged at the same outer wall surface of the box body 4.

[0091] It can be understood that arranging at least part of the electrical components 7 and at least part of the heat transfer components 9 at the same position can make the battery pack more compact.

[0092] In some embodiments, at least part of the electrical components 7 and at least part of the heat transfer components 9 are arranged at different outer wall surfaces of the box body 4, respectively.

[0093] It can be understood that arranging at least part of the electrical components 7 and at least part of the heat transfer components 9 at different sides of the box body 4 improves the structural uniformity of the battery pack.

[0094] For example, at least part of the electrical components 7 and at least part of the heat transfer components 9 are arranged at two oppositely arranged side walls of the box body 4, respectively, which improves the structural uniformity of the battery pack.

[0095] For example, the cell module 6 includes a cell module, the cell module includes a plurality of cells arranged in sequence, along the arrangement direction of the cells of the cell module, the heat transfer components 9 and part of the electrical components 7 are located at two sides of the box body 4, and the other part of the electrical components 7 is located at the same side of the heat transfer components 9, so that the electrical components 7 and the heat transfer components 9 can be directly connected to the cell module, which improves the connection convenience of the electrical components 7 and the cell module, and improves the connection convenience of the heat transfer components 9 and the cell module.

[0096] In some embodiments, as Figure 2 and Figure 3 The battery pack further includes a second cover plate 10 connected to the outer wall surface of the box body 4, a second space 101 is formed between the second cover plate 10 and the outer wall surface of the box body 4, and at least part of the heat transfer components 9 and / or at least part of the electrical components 7 are located in the second space 101.

[0097] It can be understood that through the cooperation of the second cover plate 10 and the outer wall surface of the box body 4, the second cover plate 10 can cover at least part of the heat transfer components 9 and / or at least part of the electrical components 7, so as to protect at least part of the heat transfer components 9 and / or at least part of the electrical components 7.

[0098] In some examples, the heat transfer components 9 and / or the electrical components 7 located outside the accommodating cavity 41 can be all located in the second space 101, or part of them can be located in the second space 101.

[0099] In some examples, the second cover plate 10 is sealingly connected with the outer wall surface of the box body 4 to reduce the influence of the external environment on the components in the second space 101.

[0100] In some examples, the second cover plate 10 is detachably connected with the outer wall surface of the box body 4 to facilitate the maintenance and replacement of the components in the first space 81.

[0101] In some embodiments, as Figure 2 and Figure 3 , the heat transfer assembly 9 includes a liquid cooling pipe 91, the liquid cooling pipe 91 is in communication with the refrigeration flow channel of the battery cell module 6, and at least part of the liquid cooling pipe 91 is located outside the accommodation cavity 41.

[0102] It can be understood that the liquid cooling pipe 91 can transmit the liquid cooling medium into the refrigeration flow channel of the battery cell module 6 to achieve cooling of the battery cell module 6.

[0103] By arranging at least part of the liquid cooling pipe 91 outside the accommodation cavity 41, at least part of the liquid cooling pipe 91 does not occupy the space of the accommodation cavity 41, which is beneficial to the miniaturization of the structure of the box body 4.

[0104] By arranging at least part of the liquid cooling pipe 91 at the outer wall surface of the box body 4, when maintenance or replacement of the liquid cooling pipe 91 is needed, the box body 4 does not need to be opened, thereby reducing the complexity of the maintenance of the battery pack.

[0105] It should be noted that the present embodiment is only an example of the heat transfer assembly 9, and the heat transfer assembly 9 can also be a heat conduction sheet or any other suitable structure, which is not specially limited here.

[0106] In some examples, the box body 4 is formed with a third connecting hole in communication with the accommodation cavity 41, one end of the liquid cooling pipe 91 is connected with the battery cell module 6, and the other end of the liquid cooling pipe 91 is arranged to pass through the third connecting hole to be located outside the accommodation cavity 41.

[0107] It can be understood that by forming the third connecting hole in the box body 4, the liquid cooling pipe 91 can pass through the third connecting hole to be in communication with the refrigeration flow channel, thereby facilitating the connection of the liquid cooling pipe 91 and the refrigeration flow channel.

[0108] In some embodiments, as Figure 2 and Figure 3 , the liquid cooling pipe 91 passes through the first connecting hole 44, and the liquid cooling pipe 91 is arranged to be spaced apart from the connecting row 71.

[0109] It can be understood that the liquid cooling pipe and the connecting row 71 can simultaneously pass out of the first connecting hole 44, thereby achieving sharing of the first connecting hole 44. Meanwhile, the liquid cooling pipe 91 and the connecting row 71 are arranged to be spaced apart, thereby avoiding interference between the liquid cooling pipe 91 and the connecting row 71, and preventing the liquid cooling pipe 91 and the connecting row 71 from affecting each other.

[0110] In some embodiments, as Figure 2 and Figure 3 The connecting row 71 comprises a first connecting block 711 and a second connecting block 712 connected in sequence, the first connecting block 711 is arranged through the first connecting hole 44 and connects the second connecting block 712 and the battery cell module 6, and the second connecting block 712 and the outer wall surface of the box body 4 form an installation space 714 therebetween.

[0111] The liquid cooling pipe 91 comprises a first secondary pipe 911 and a second secondary pipe 912 connected in sequence, the first secondary pipe 911 is arranged through the first connecting hole 44 and connects the second secondary pipe 912 and the refrigeration flow channel of the battery cell module 6, and the second secondary pipe 912 is located in the installation space 714.

[0112] It can be understood that the second connecting block 712 is arranged spaced apart from the outer wall surface of the box body 4 to form the installation space 714 between the second connecting block 712 and the outer wall surface of the box body. The second secondary pipe 912 can be arranged in the installation space 714, thereby avoiding mutual interference between the second secondary pipe 912 and the second connecting block 712, and ensuring that the liquid cooling pipe 91 and the connecting row 71 can be smoothly installed.

[0113] In some embodiments, as Figure 2 and Figure 3 As Figure 2 and Figure 6 The connecting row 71 further comprises a bending block 713, the extension directions of the first connecting block 711 and the second connecting block 712 are different, and the bending block 713 connects the first connecting block 711 and the second connecting block 712.

[0114] It can be understood that the first connecting block 711 and the second connecting block 712 with different extension directions are connected by the bending block 713, which facilitates the connection of the first connecting block 711 and the second connecting block 712.

[0115] It can be understood that one end of the bending block 713 extends toward the first connecting block 711, facilitating the connection of the bending block 713 and the first connecting block 711, and the other end of the bending block 713 extends toward the second connecting block 712, facilitating the connection of the bending block 713 and the second connecting block 712.

[0116] In some embodiments, as Figure 7 The box body 4 comprises a body 46 and a top cover 47, the top cover 47 is connected to the body 46, the top cover 47 and the body 46 surround to form the accommodating cavity 41, and the connection between the top cover 47 and the body 46 is provided with a sealing piece 48.

[0117] It can be understood that the sealing member 48 can improve the connection sealing of the top cover 47 and the body 46 to reduce the influence of the external environment on the components such as the battery cell module in the containing cavity 41.

[0118] In some examples, the sealing member 48 is, for example, sealing foam or sealing glue.

[0119] In some embodiments, as Figure 6 and Figure 8 The battery cell module includes at least two battery cell assemblies 1 stacked in sequence, the battery cell assembly 1 includes a shell 11 and a battery cell 12, the shell 11 is formed with a mounting cavity 111, the battery cell 12 is mounted in the mounting cavity 111, and the bottom plate 112 of the shell 11 is a cold plate. The bottom plate 112 of the shell 11 of at least part of the battery cell assembly 1 abuts against the top plate of the shell 11 of the adjacent battery cell assembly 1.

[0120] According to the battery cell module of the embodiment of the application, at least two battery cell assemblies 1 are stacked in sequence to form the battery cell module, and the bottom plate 112 of the shell 11 of at least part of the battery cell assembly 1 abuts against the top plate of the shell 11 of the adjacent battery cell assembly 1. The bottom plate 112 of the shell 11 of at least part of the battery cell assembly 1 can cool and dissipate heat for the battery cell 12. The cold plate is part of the structure of the shell 11, which simplifies the structure of the battery cell assembly 1. At the same time, the bottom plate 112 can also cool and dissipate heat for the top of the adjacent battery cell assembly 1, that is, for the top of the battery cell 12 of the adjacent battery cell assembly 1. The bottom plate 112 of the shell 11 of the battery cell assembly 1 is multiplexed, so that the bottom plate 112 can cool and dissipate heat for the bottom of the current battery cell assembly 1 and the top of the adjacent battery cell assembly 1 at the same time. The structure of the battery cell module is simplified, and the bottom and top of the battery cell 12 of at least part of the battery cell assembly 1 are cooled and dissipated at the same time. The cooling effect of the battery cell 12 is increased, the temperature consistency of the battery cell 12 is improved, and the temperature difference between different ends of the battery cell 12 is reduced, which is beneficial to improve the cycle life of the battery cell 12.

[0121] For example, the battery cell module includes a first battery cell module, a second battery cell module, and a third battery cell module stacked in sequence. The top of the first battery cell module abuts against the bottom of the second battery cell module, and the top of the second battery cell module abuts against the bottom of the third battery cell module. The bottom plate 112 of the shell 11 of the second battery cell module can cool and dissipate heat for the top of the first battery cell module and the bottom of the second battery cell module at the same time, and the bottom plate 112 of the shell 11 of the third battery cell module can cool and dissipate heat for the bottom of the third battery cell module and the top of the second battery cell module at the same time. That is, the bottom and top of at least the first battery cell module and the second battery cell module can be cooled and dissipated at the same time.

[0122] In some examples, the battery cell assembly 1 comprises a plurality of battery cells 12 stacked together, and the two sides of the shell 11 of the battery cell assembly 1 are provided with end plates which can pre-tighten the plurality of battery cells 12.

[0123] In some embodiments, as Figure 8 , a heat-conducting layer 13 is arranged between the two adjacent battery cell assemblies 1.

[0124] It can be understood that, by arranging the heat-conducting layer 13 between the two adjacent battery cell assemblies 1, the heat transfer effect between the two adjacent battery cell assemblies 1 can be improved, so that the bottom plate 112 of the shell 11 of one of the battery cell assemblies 1 can effectively cool and dissipate heat from the top of the adjacent battery cell assembly 1.

[0125] For example, the heat-conducting layer 13 is a heat-conducting structural adhesive or a heat-conducting gasket.

[0126] In some embodiments, the two adjacent battery cell assemblies 1 are detachably connected, facilitating maintenance and replacement of the battery cell assembly 1.

[0127] In some embodiments, the battery cell module further comprises a connecting assembly 2 which connects the side walls of the two adjacent battery cell assemblies 1.

[0128] It can be understood that, by using the connecting assembly 2 to connect the two adjacent battery cell assemblies 1 together, the two adjacent battery cell assemblies 1 are kept connected, so that the top and bottom of the two adjacent battery cell assemblies 1 abut, and thus the bottom plate 112 of the shell 11 of one of the battery cell assemblies 1 can cool and dissipate heat from the top of the adjacent battery cell assembly 1. At the same time, the connecting assembly 2 is connected to the side walls of the battery cell assembly 1, so that the connecting assembly 2 does not affect the stacking of the two adjacent battery cell assemblies 1, i.e. there is no gap between the two adjacent battery cell assemblies 1, so that the bottom plate 112 of the shell 11 of the current battery cell assembly 1 can cool and dissipate heat from the top of the adjacent battery cell assembly 1.

[0129] In some examples, as Figure 8 , the connecting assembly 2 comprises a connecting sheet 21, one end of the connecting sheet 21 is connected to the side wall of one of the two adjacent battery cell assemblies 1, and the other end of the connecting sheet 21 is connected to the side wall of the other of the two adjacent battery cell assemblies 1, so as to connect the two adjacent battery cell assemblies 1.

[0130] Specifically, the connecting sheet 21 is provided with connecting holes at both ends, a fastener is arranged in the connecting hole at one end of the connecting sheet 21 and connected to the side wall of one of the two adjacent battery cell assemblies 1, so as to connect one end of the connecting sheet 21 to the side wall of one of the two adjacent battery cell assemblies 1, and the other end of the connecting sheet 21 is connected to the side wall of the other of the two adjacent battery cell assemblies 1 in the same way.

[0131] In some embodiments, as Figure 9 The battery cell module further comprises a reinforcing member 3, and the side wall surface of each battery cell assembly 1 is connected with the reinforcing member 3.

[0132] It can be understood that the reinforcing member 3 is used to fixedly connect different battery cell assemblies 1 together, and the at least two battery cell assemblies 1 are positioned in sequence, so as to facilitate the subsequent installation and movement of the battery cell module.

[0133] Specifically, as Figure 10 The reinforcing member 3 comprises a horizontal plate 31 and at least two vertical plates 32, the at least two vertical plates 32 comprise a first vertical plate 32 and a second vertical plate 32, the first vertical plate 32 and the second vertical plate 32 are arranged side by side, the side wall surface of each battery cell assembly 1 is connected with the first vertical plate 32, the side wall surface of each battery cell assembly 1 is connected with the second vertical plate 32, and the horizontal plate 31 connects the first vertical plate 32 and the second vertical plate 32.

[0134] It can be understood that the first vertical plate 32 is used to fixedly connect the at least two battery cell assemblies 1 in sequence together, and the second vertical plate 32 is used to fixedly connect the at least two battery cell assemblies 1 in sequence together, so as to improve the fixed connection effect between different battery cell assemblies 1.

[0135] The horizontal plate 31 is used to connect the first vertical plate 32 and the second vertical plate 32, so that the first vertical plate 32 and the second vertical plate 32 are connected, and the fixed connection effect of different battery cell assemblies 1 is improved.

[0136] In some embodiments, as Figure 9 and Figure 10 The battery pack comprises at least three fixed connecting members 5, the fixed connecting members 5 connect the battery cell module and the box body 4, and the at least three fixed connecting members 5 are arranged in sequence along the height direction of the box body 4.

[0137] It can be understood that the different fixed connecting members 5 are located at different heights, that is, the battery cell module and the same at least three fixed positions are located at different heights, so as to effectively disperse the load, reduce the force arm, and make the battery pack more resistant to impact and vibration.

[0138] In some embodiments, as Figure 9 and Figure 10 The at least three fixed connecting members 5 comprise a first fixed support 51, one end of the box body 4 is formed with a mounting opening which is in communication with the accommodating cavity 41, the end surface of the one end of the box body 4 is formed with a mounting groove 42, the first fixed support 51 is arranged in the mounting groove 42, and the first fixed support 51 connects the battery cell module and the box body 4.

[0139] It can be understood that the first fixing support 51 can fixedly connect the battery cell module and the box body 4 together. Meanwhile, the mounting groove 42 for mounting the first fixing support 51 is arranged at the end face of one end of the box body 4, and when the first fixing support 51 is arranged in the mounting groove 42, the first fixing support 51 can be operated through the slot of the mounting groove 42, so as to facilitate the fixed connection of the first fixing support 51 and the battery cell module, and facilitate the fixed connection of the first fixing support 51 and the box body 4.

[0140] For example, along the height direction of the box body 4, the depth of the mounting groove 42 is greater than the height of the first fixing support 51, so that the first fixing support 51 does not protrude from the box body 4 after being mounted in the mounting groove 42, and the height of the box body 4 is not affected by the first fixing support 51.

[0141] In some embodiments, as Figure 11 and Figure 12 At least three fixed connecting pieces 5 include a second fixing support 52, the side wall of the box body 4 is formed with a mounting hole 43, the second fixing support 52 is arranged in the mounting hole 43, and the second fixing support 52 connects the battery cell module and the box body 4.

[0142] It can be understood that the second fixing support 52 can fixedly connect the battery cell module and the box body 4 together. Meanwhile, the mounting hole 43 for accommodating the second fixing support 52 is formed in the side wall of the box body 4, and when the second fixing support 52 is arranged in the mounting hole 43, the second fixing support 52 can be operated through the mounting hole 43, so as to facilitate the fixed connection of the second fixing support 52 and the battery cell module, and facilitate the fixed connection of the second fixing support 52 and the box body 4.

[0143] In some embodiments, the middle part of the inner side wall of the box body 4 is connected with the side wall surface of the battery cell module through a connecting block.

[0144] In some embodiments, as Figure 11 and Figure 12 At least two battery cell assemblies 1 arranged in sequence include a first battery cell module and a second battery cell module, the bottom plate 112 of the shell 11 of the first battery cell module includes a heat conduction piece 123 and oppositely arranged first and second refrigeration surfaces 124 and 125, the heat conduction piece 123 connects the first and second refrigeration surfaces 124 and 125, the first refrigeration surface 124 abuts against the battery cell 12 of the first battery cell module, and the second refrigeration surface 125 abuts against the second battery cell module.

[0145] It can be understood that the bottom plate 112 of the first cell module is arranged between the cell 12 of the first cell module and the second cell module, the first cooling surface 124 of the bottom plate 112 of the first cell module can cool and dissipate heat for the cell 12 of the first cell module, the second cooling surface 125 of the bottom plate 112 of the first cell module can cool and dissipate heat for the second cell module, the cell 12 of the first cell module and the second cell module are cooled and dissipated at the same time, the cell 12 of the first cell module and the second cell module share one bottom plate 112 of the first cell module, and the structure of the battery pack is simplified. The heat conduction member 123 can conduct heat between the first cooling surface 124 and the second cooling surface 125, which is beneficial to uniform the temperature between the cell 12 of the first cell module and the second cell module, reduce the temperature difference between the first cell module and the second cell module, improve the temperature uniformity of the battery pack, and is beneficial to improve the cycle life of the battery pack.

[0146] For example, the bottom plate 112 of the first cell module can be integrally formed, or can be spliced by different components.

[0147] In some examples, the heat conduction member 123 is, for example, a heat conduction structural adhesive or a heat conduction gasket.

[0148] In some embodiments, as Figure 11 and Figure 12 The bottom plate 112 of the first cell module includes a first cold plate 126 and a second cold plate 127 arranged opposite to each other, the heat conduction member 123 connects the first cold plate 126 and the second cold plate 127, the first cooling surface 124 is formed on the side of the first cold plate 126 away from the second cold plate 127, and the second cooling surface 125 is formed on the side of the second cold plate 127 away from the first cold plate 126.

[0149] It can be understood that the first cold plate 126 forms the first cooling surface 124, that is, the first cold plate 126 can cool and dissipate heat for the cell 12 of the first cell module, the second cold plate 127 forms the second cooling surface 125, that is, the second cold plate 127 can cool and dissipate heat for the second cell module. The heat conduction member 123 connects the first cold plate 126 and the second cold plate 127, and the first cold plate 126 and the second cold plate 127 can exchange heat through the heat conduction member 123, which improves the temperature uniformity between the first cold plate 126 and the second cold plate 127, that is, the first cold plate 126 and the second cold plate 127 can cool and dissipate heat for the cell 12 of the first cell module, and the first cold plate 126 and the second cold plate 127 can cool and dissipate heat for the second cell module at the same time, thereby reducing the temperature difference between the cell 12 of the first cell module and the second cell module, improving the temperature uniformity of the battery pack, and being beneficial to improve the cycle life of the battery pack.

[0150] In some examples, as Figure 11 andFigure 12 The heat-conducting member 123 is located between the first cold plate 126 and the second cold plate 127 to connect the first cold plate 126 and the second cold plate 127. The heat-conducting member 123 can also be located on one side of the first cold plate 126 and the second cold plate 127, for example, at the side wall surface of the first cold plate 126, and the heat-conducting member 123 connects the side wall surfaces of the first cold plate 126 and the second cold plate 127.

[0151] In some embodiments, as Figure 11 and Figure 12 The first cold plate 126 is formed with at least two first flow channel groups 1261, and a first containing space 1262 is arranged between adjacent two first flow channel groups 1261, and part of the heat-conducting member 123 is located at the first containing space 1262.

[0152] It can be understood that the at least two first flow channel groups 1261 are sequentially communicated, and the part of the heat-conducting member 123 is arranged at the first containing space 1262 between the adjacent two first flow channel groups 1261, so that the heat-conducting member 123 can improve the temperature uniformity between the adjacent two first flow channel groups 1261, so that the first cold plate 126 can uniformly cool the battery cells 12 of the first battery cell module. At the same time, since the heat-conducting member 123 connects the first cold plate 126 and the second cold plate 127, the heat-conducting member 123 can make each first flow channel group 1261 exchange heat with the second cold plate 127, improve the temperature uniformity between the first cold plate 126 and the second cold plate 127, and further reduce the temperature difference between the battery cells 12 of the first battery cell module and the second battery cell module, thereby improving the temperature uniformity of the battery pack and being beneficial to improving the cycle life of the battery pack.

[0153] In some embodiments, as Figure 11 and Figure 12 The first flow channel group 1261 includes at least two first refrigeration flow channels 1263, and part of the heat-conducting member 123 is located between adjacent two first refrigeration flow channels 1263.

[0154] It can be understood that the at least two first refrigeration flow channels 1263 are sequentially communicated, and the part of the heat-conducting member 123 is arranged between the adjacent two first refrigeration flow channels 1263, so that the heat-conducting member 123 can improve the temperature uniformity between the adjacent two first refrigeration flow channels 1263, so that the first cold plate 126 can uniformly cool the battery cells 12 of the first battery cell module. At the same time, since the heat-conducting member 123 connects the first cold plate 126 and the second cold plate 127, the heat-conducting member 123 can make each first refrigeration flow channel 1263 exchange heat with the second cold plate 127, improve the temperature uniformity between the first cold plate 126 and the second cold plate 127, and further reduce the temperature difference between the battery cells 12 of the first battery cell module and the second battery cell module, thereby improving the temperature uniformity of the battery pack and being beneficial to improving the cycle life of the battery pack.

[0155] In some embodiments, as Figure 11 and Figure 12 The second cold plate 127 is formed with at least two second flow channel groups 1271, and a second containing space 1272 is arranged between adjacent two second flow channel groups 1271, and the partial heat conduction member 123 is arranged at the second containing space 1272.

[0156] It can be understood that the at least two second flow channel groups 1271 are sequentially communicated, and the partial heat conduction member 123 is arranged at the second containing space 1272 between the adjacent two second flow channel groups 1271, so that the heat conduction member 123 can improve the temperature uniformity between the adjacent two second flow channel groups 1271, so that the second cold plate 127 can uniformly cool the second battery cell module. At the same time, since the heat conduction member 123 connects the first cold plate 126 and the second cold plate 127, the heat conduction member 123 can make each second flow channel group 1271 be in heat exchange with the first cold plate 126, improve the temperature uniformity between the first cold plate 126 and the second cold plate 127, and further reduce the temperature difference between the battery cell 12 of the first battery cell module and the second battery cell module, improve the temperature uniformity of the battery pack, and be beneficial to improve the cycle life of the battery pack.

[0157] In some embodiments, as ​ and ​ The second flow channel group 1271 includes at least two second refrigeration flow channels 1273, and the partial heat conduction member 123 is arranged between adjacent two second refrigeration flow channels 1273.

[0158] It can be understood that the at least two second refrigeration flow channels 1273 are sequentially communicated, and the partial heat conduction member 123 is arranged between the adjacent two second refrigeration flow channels 1273, so that the heat conduction member 123 can improve the temperature uniformity between the adjacent two second refrigeration flow channels 1273, so that the second cold plate 127 can uniformly cool the second battery cell module. At the same time, since the heat conduction member 123 connects the first cold plate 126 and the second cold plate 127, the heat conduction member 123 can make each second refrigeration flow channel 1273 be in heat exchange with the first cold plate 126, improve the temperature uniformity between the first cold plate 126 and the second cold plate 127, and further reduce the temperature difference between the battery cell 12 of the first battery cell module and the second battery cell module, improve the temperature uniformity of the battery pack, and be beneficial to improve the cycle life of the battery pack.

[0159] In some embodiments, the at least two first flow channel groups 1261 and the at least two second flow channel groups 1271 are staggered. The cooling uniformity of the bottom plate 112 of the first battery cell module can be effectively improved, so that the bottom plate 112 of the first battery cell module can uniformly cool the battery cell 12 of the first battery cell module and the second battery cell module, and the temperature difference between the battery cell 12 of the first battery cell module and the second battery cell module is reduced.

[0160] According to the embodiments of the second aspect of the application, the power equipment includes the battery pack.

[0161] According to the power equipment of the embodiments of the application, the battery pack installs the battery cell module 6 in the accommodating cavity 41 of the box body 4, and sets at least part of the heat transfer assembly 9 outside the accommodating cavity 41, so that at least part of the heat transfer assembly 9 does not occupy the space of the accommodating cavity 41, the size of the accommodating cavity 41 can be reduced, and then the volume of the box body 4 can be reduced. After the volume of the box body 4 is reduced, the weight is also reduced, and then the weight of the battery pack can be reduced, and the cost of the battery pack is reduced.

[0162] At the same time, the heat transfer assembly 9 is set outside the accommodating cavity 41, when the heat transfer assembly 9 of the battery pack needs to be overhauled and replaced, the box body 4 does not need to be opened, which is convenient for the maintenance of the battery pack, and then the overhauling and maintenance of the power equipment is facilitated.

[0163] It should be noted that the power equipment can be a vehicle, an aircraft, or a household appliance. It should be noted that the foregoing is only an example of the power equipment, and does not specially limit the power equipment.

[0164] The embodiments of the application are described in detail above, and the specific examples are applied to the principle and implementation mode of the application. The above description of the embodiments is only used to help understand the method of the application and its core idea; at the same time, for those skilled in the art, according to the idea of the application, the specific implementation mode and application range will be changed, and the above description of the embodiments should not be understood as a limitation of the application.

Claims

1. A battery pack, characterized in that, include: The box-shaped structure forms a receiving cavity; A battery cell module includes multiple battery cells, all of which are disposed within the receiving cavity; A heat transfer component is connected to the battery cell module, the heat transfer component is used to exchange heat with the battery cell module, and at least a portion of the heat transfer component is located outside the receiving cavity; The battery pack also includes a connecting bar, the housing has a first connecting hole communicating with the receiving cavity, and the other end of the connecting bar passes through the first connecting hole to be located outside the receiving cavity; The heat transfer assembly includes a liquid-cooled pipe, at least a portion of which is located outside the receiving cavity, and the liquid-cooled pipe passes through the first connecting hole; The connecting block includes a first connecting block and a second connecting block connected in sequence. The first connecting block passes through the first connecting hole and connects to the second connecting block. An installation space is formed between the second connecting block and the outer wall of the housing. The liquid cooling pipe includes a first-stage pipe and a second-stage pipe connected in sequence. The first-stage pipe passes through the first connecting hole and connects to the second-stage pipe. The second-stage pipe is located within the installation space.

2. The battery pack according to claim 1, characterized in that, At least a portion of the heat transfer components are disposed on the outer wall surface of the housing.

3. The battery pack according to claim 1 or 2, characterized in that, The battery pack also includes electrical components connected to the cell module, with at least a portion of the electrical components located outside the receiving cavity.

4. The battery pack according to claim 3, characterized in that, At least some of the electrical components are located on the outer wall surface of the enclosure.

5. The battery pack according to claim 3, characterized in that, The battery pack also includes a second cover plate connected to the outer wall of the housing, and a second space is formed between the second cover plate and the outer wall of the housing, wherein at least a portion of the heat transfer components and / or at least a portion of the electrical components are located within the second space.

6. The battery pack according to claim 3, characterized in that, One end of the connecting bar is located inside the receiving cavity and is electrically connected to the battery cell module, while the other end of the connecting bar extends outside the receiving cavity and is connected to the electrical component.

7. The battery pack according to claim 6, characterized in that, The first connection hole is opposite to the output terminal of the battery cell module.

8. The battery pack according to claim 7, characterized in that, The liquid cooling pipe is connected to the cooling channel of the battery cell module.

9. The battery pack according to claim 8, characterized in that, The liquid cooling pipes are spaced apart from the connecting pipes.

10. The battery pack according to claim 9, characterized in that, The first connecting block is connected to the battery cell module; The primary pipeline is connected to the cooling channel of the battery cell module.

11. The battery pack according to claim 6, characterized in that, The electrical components include a high-voltage connector and a high-voltage plug. The high-voltage connector is located on the outer wall of the enclosure. The other end of the connector is electrically connected to the high-voltage connector. The high-voltage plug is located on the outer wall of the enclosure. The other end of the connector is electrically connected to the high-voltage connector via the high-voltage plug.

12. The battery pack according to claim 3, characterized in that, The electrical components include a BMS module, which is located on the outer wall of the enclosure, and the battery cell module is electrically connected to the BMS module. The housing has a second connection hole communicating with the receiving cavity. The electrical component includes a connecting wire harness, one end of which is electrically connected to the battery cell module, and the other end of which passes through the second connection hole and is electrically connected to the BMS module. At least a portion of the connecting wire harness is located outside the receiving cavity.

13. The battery pack according to claim 3, characterized in that, The electrical components include an MSD module, the MSD module being disposed on the outer wall surface of the enclosure; and / or, The electrical components include a PDU module, which is located on the outer wall of the enclosure.

14. The battery pack according to claim 3, characterized in that, At least some of the electrical components and at least some of the heat transfer components are located on the same outer wall surface of the enclosure, or at least some of the electrical components and at least some of the heat transfer components are located on different outer wall surfaces of the enclosure.

15. The battery pack according to claim 3, characterized in that, The enclosure includes a main body and a top cover. The top cover is connected to the main body, and the top cover and the main body enclose the receiving cavity. A sealing element is provided at the connection between the top cover and the main body.

16. An electrical appliance, characterized in that, Includes the battery pack as described in any one of claims 1 to 15.

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