Battery pack, electrical device and energy storage device

Abstract

The present disclosure belongs to the technical field of batteries. Provided in the embodiments of the present disclosure are a battery pack, an electrical device and an energy storage device. The battery pack comprises a box body, battery cells, a thermal management component, a flange, a first connecting pipe and a second connecting pipe. The box body has an accommodation cavity and a mounting hole communicated with the accommodation cavity. The battery cells are provided in the accommodation cavity. The thermal management component is provided in the accommodation cavity so as to cool the battery cells. The mounting hole is used for providing clearance for a temperature regulation fluid that enters and exits the thermal management component. The flange covers the mounting hole, and the flange is mounted on the box body. The first connecting pipe is separately connected to the flange and the thermal management component to provide the temperature regulation fluid. The second connecting pipe is separately connected to the flange and the thermal management component to discharge the temperature regulation fluid. The flange spans the first connecting pipe and the second connecting pipe.

Description

A battery pack, an electrical device, and an energy storage device.

[0001] Cross-reference to related applications

[0002] This disclosure is based on and claims priority to Chinese Patent Application No. 202421609819.3, filed on July 9, 2024, entitled “A Battery Pack, Power Consumption Device and Energy Storage Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of battery technology, specifically to a battery pack, an electrical device, and an energy storage device. Background Technology

[0004] New energy batteries are being used more and more widely in daily life and industry. For example, new energy vehicles equipped with batteries are already widely used. In addition, batteries are being used more and more in the field of energy storage.

[0005] The battery cells of the battery pack are installed inside the casing. Energy is stored by charging the battery cells inside the casing or by discharging the battery cells inside the casing to supply power to the outside. In related technologies, the installation between the flange in the battery pack and the casing is relatively complicated. Summary of the Invention

[0006] In view of this, embodiments of the present disclosure aim to provide a battery pack designed to simplify the installation between the flange and the housing.

[0007] To achieve the above objectives, the technical solution of this disclosure embodiment is implemented as follows:

[0008] This disclosure provides a battery pack, including:

[0009] The housing has a receiving cavity and mounting holes communicating with the receiving cavity;

[0010] The individual battery cell is located within the housing cavity;

[0011] The thermal management component is located within the housing cavity to cool the battery cells, and the mounting holes are used to prevent temperature-regulating fluids from entering and exiting the thermal management component.

[0012] Flange, with a cover on the mounting hole, is installed in the housing;

[0013] The first connecting pipe connects to the flange and thermal management components respectively to provide temperature-regulating fluid;

[0014] The second pipe connects to the flange and thermal management components respectively to discharge the temperature-regulating fluid;

[0015] The flange spans between the first and second connecting pipes.

[0016] In this embodiment of the present disclosure, both the first and second connecting pipes are connected to the same flange. The flange spans across the first and second connecting pipes. The first and second connecting pipes do not need to be connected to corresponding flanges separately. The flange spanning across the first and second connecting pipes is installed as a whole in the housing. This eliminates the need to install multiple flanges to the housing, thereby simplifying the installation of the flanges and making the installation between the flanges and the housing more convenient.

[0017] In one embodiment, the battery pack includes a sealing ring that makes sealing contact with a flange and a housing, and the space enclosed by the sealing ring spans the first and second connecting pipes, with a mounting hole located inside the sealing ring.

[0018] In this embodiment, the sealing ring makes sealing contact with the flange and the housing respectively. The space enclosed by the sealing ring spans the first and second connecting pipes. The first and second connecting pipes can be sealed by the same sealing ring, eliminating the need to seal the first and second connecting pipes separately. This reduces the possible leakage points on the housing and helps improve the sealing reliability between the flange and the housing.

[0019] In one embodiment, the first and second connecting pipes are located on the same side of the housing along the arrangement direction of the first connecting pipe and the second connecting pipe.

[0020] In this embodiment, the first and second connecting pipes are located on the same side of the housing, so that the first and second connecting pipes can be as close as possible, which helps to reduce the area of ​​the flange, and in turn helps to reduce the volume of the space enclosed by the sealing ring. A smaller sealing ring helps to improve the sealing reliability between the flange and the housing.

[0021] In one embodiment, the center distance between the first and second connectors on the same side is 40mm to 60mm.

[0022] In this embodiment, the center distance between the first and second connecting pipes is limited to a reasonable range. On the one hand, this provides sufficient operating space for both the first and second connecting pipes to connect to the flange and the thermal management component respectively. On the other hand, the center distance between the first and second connecting pipes can limit the size of the flange and the sealing ring, which is beneficial to improving the sealing reliability between the flange and the housing.

[0023] In one embodiment, the mounting hole spans between the first and second connecting pipes.

[0024] In this embodiment, the mounting hole spans between the first and second connecting pipes, so that the number of mounting holes can be one, allowing the first and second connecting pipes to be as close as possible. This helps to reduce the size of the mounting hole, which in turn helps to reduce the size of the flange and sealing ring, thereby improving the sealing reliability between the flange and the housing.

[0025] In one embodiment, the first and second connecting pipes pass through corresponding mounting holes.

[0026] In this embodiment, the first and second connecting pipes pass through corresponding mounting holes, such that there are at least two mounting holes, and there is a certain distance between the two mounting holes, providing sufficient operating space for the first and second connecting pipes to connect to the flange and the thermal management component respectively.

[0027] In one embodiment, the space enclosed by the sealing ring has a span of 60mm to 80mm along the arrangement direction of the first and second connecting pipes.

[0028] In this embodiment, the span of the space enclosed by the sealing ring along the arrangement direction of the first and second pipes is limited to a reasonable range. On the one hand, this provides sufficient operating space for the first and second pipe sections to be connected to the flange and thermal management components respectively. On the other hand, the span of the space enclosed by the sealing ring along the arrangement direction of the first and second pipes can limit the size of the flange and the sealing ring, which is beneficial to improving the sealing reliability between the flange and the housing.

[0029] In one embodiment, an annular groove is formed on the side of the flange facing the mounting hole, and the space enclosed by the annular groove spans the first and second connecting pipes, with the sealing ring located within the annular groove.

[0030] In this embodiment, the sealing ring is located in the annular groove. On the one hand, this increases the contact area between the sealing ring and the flange, which is beneficial to improving the connection strength between the sealing ring and the flange, and also beneficial to improving the sealing reliability between the flange and the housing. On the other hand, during the sealing contact between the sealing ring and the housing and the flange, the annular groove on the side of the flange closer to the housing facilitates the positioning of the sealing ring, making it easier for the sealing ring to adhere to the flange and facilitating the installation of the sealing ring.

[0031] In one embodiment, the first connector, the second connector, and the flange are integrally formed.

[0032] In this embodiment, the first connector, the second connector, and the flange are integrally formed. On the one hand, this reduces the number of processing steps for connecting the first connector, the second connector, and the flange, thereby reducing the production cycle of the battery pack. On the other hand, the integrally formed first connector, the second connector, and the flange have better overall integrity, which helps to reduce connection defects at the connection points of the first connector, the second connector, and the flange, thereby reducing the possibility of leakage of temperature-regulating fluid at the connection points of the first connector, the second connector, and the flange, and improving the sealing reliability between the flange and the housing.

[0033] In one embodiment, both the first and second connecting pipes are disposed across opposite sides of the flange along the thickness direction of the flange.

[0034] In this embodiment, the first and second connecting pipes are both disposed across the opposite sides of the flange along the thickness direction of the flange, such that the ends of the first and second connecting pipes near the housing along the thickness direction of the flange can be inserted into the housing through the mounting holes, and the ends of the first and second connecting pipes near the housing along the thickness direction of the flange are at least partially located inside the housing, which facilitates the connection of the first and second connecting pipes with the thermal management components and helps to improve the installation efficiency of the battery pack.

[0035] In one embodiment, the flange is located outside the housing.

[0036] In this embodiment, the flange is located outside the housing. During the installation of the flange on the housing, the outside of the housing has a large operating space, which is beneficial to improving the convenience of connecting the flange and the housing, and thus improving the efficiency of the connection between the flange and the housing, thereby reducing the production cycle of the battery pack.

[0037] In one embodiment, the thermal management component includes:

[0038] Temperature control unit;

[0039] The hose includes a first tube body and a second tube body. The first tube body is connected to a temperature-regulating body and a first connecting pipe respectively to provide temperature-regulating fluid to the temperature-regulating body. The second tube body is connected to the temperature-regulating body and the second connecting pipe respectively to discharge the temperature-regulating fluid from the temperature-regulating body.

[0040] In this embodiment, both the first and second pipes are relatively soft channels. On the one hand, the relatively soft first and second pipes facilitate the flexible arrangement of the temperature regulating body within the housing, making full use of the space within the housing and enabling a more compact arrangement of the internal structure of the battery pack. On the other hand, the temperature regulating body expands when heated, causing its position to shift. The relatively soft first and second pipes help reduce the impact of the temperature regulating body's movement, which in turn reduces the impact of the movement on the first and second connecting pipes. This reduces the possibility of loosening at the connection points of the first pipe with the first connecting pipe and the temperature regulating body, as well as the possibility of loosening at the connection points of the second pipe with the second connecting pipe and the temperature regulating body, thereby improving the sealing reliability between the flange and the housing.

[0041] A second aspect of this disclosure provides an electrical device, comprising:

[0042] The battery pack of any of the foregoing embodiments;

[0043] The main power-consuming unit has a battery pack installed on it, which provides power to the main power-consuming unit.

[0044] A third aspect of this disclosure provides an energy storage device, comprising:

[0045] The battery pack of any of the foregoing embodiments is capable of storing electricity;

[0046] The battery pack is housed within the mounting box.

[0047] The battery pack provided in this embodiment connects the first and second connectors to the same flange. The flange spans across the first and second connectors, eliminating the need for separate flange connections between the first and second connectors. The flange spanning across the first and second connectors is installed as a whole in the housing, eliminating the need to install multiple flanges to the housing, thus simplifying flange installation and making installation between the flange and the housing more convenient. Attached Figure Description

[0048] Figure 1 is an assembly diagram of a battery pack according to an embodiment of the present disclosure, where the housing and individual battery cells are not shown.

[0049] Figure 2 is an enlarged schematic diagram of the structure at point B in Figure 1;

[0050] Figure 3 is a top view of Figure 2;

[0051] Figure 4 is a schematic diagram of the assembly of the first pipe, the second pipe, and the flange in one embodiment of this disclosure;

[0052] Figure 5 is a schematic diagram of the cross-sectional structure at point AA in Figure 4;

[0053] Figure 6 is a schematic diagram of the assembly of the first pipe, the second pipe, and the flange in one embodiment of the present disclosure, wherein the second pipe is not shown in the figure;

[0054] Figure 7 is a schematic diagram of the structure of the temperature regulating body in one embodiment of the present disclosure;

[0055] Figure 8 is a schematic diagram of the arrangement of the temperature control channel in one embodiment of this disclosure;

[0056] Figure 9 is an assembly diagram of a battery pack according to an embodiment of the present disclosure, where individual battery cells and sealing rings are not shown.

[0057] Figure 10 is an enlarged schematic diagram of the structure at point C in Figure 9;

[0058] Figure 11 is a schematic diagram of the structure of the box in one embodiment of this disclosure.

[0059] Explanation of reference numerals in the attached drawings: 1. Thermal management component; 11. Temperature control body; 111. Temperature control plate; 111a. Temperature control channel; 112. Third connecting pipe; 113. Fourth connecting pipe; 12. Flexible hose; 121. First pipe body; 122. Second pipe body; 123. Connector; 2. Flange; 2a. Annular groove; 3. First connecting pipe; 3a. First groove; 4. Second connecting pipe; 5. Sealing ring; 6. Housing; 6a. Receiving cavity; 6b. Mounting hole. Detailed Implementation

[0060] The embodiments of the technical solutions disclosed herein will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solutions disclosed herein and are therefore intended to limit the scope of protection of this disclosure.

[0061] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure; the terms “comprising” and “having” and any variations thereof in embodiments of this disclosure are intended to cover non-exclusive inclusion.

[0062] In the description of the embodiments of this disclosure, technical terms such as "first," "second," and "third" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary or secondary relationship of the indicated technical features. In the description of the embodiments of this disclosure, "a plurality of" means two or more, unless otherwise explicitly defined.

[0063] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this disclosure. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0064] In the description of the embodiments of this disclosure, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0065] In the description of the embodiments of this disclosure, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0066] In the description of the embodiments of this disclosure, unless otherwise expressly specified and limited, the technical term "contact" should be interpreted broadly, and can be direct contact, contact through an intermediate medium layer, contact between two contacting parties with substantially no interaction force, or contact between two contacting parties with interaction force.

[0067] In related technologies, individual battery cells are installed inside a casing. Thermal management components inside the casing regulate the temperature of the battery cells, and a corresponding temperature-regulating fluid needs to enter and exit the casing. A single connector for the temperature-regulating fluid typically corresponds to a flange and a mounting hole. The flange is installed in the casing at the corresponding mounting hole so that the thermal management components can be installed on the corresponding connector connected to the flange. The presence of a first connector for supplying the temperature-regulating fluid and a second connector for discharging the temperature-regulating fluid results in the casing having at least two mounting holes communicating with the receiving cavity. The large number of mounting holes leads to a large number of flanges, with each flange corresponding to a mounting hole being installed separately in the casing. This individual installation of flanges makes flange installation cumbersome and inconvenient.

[0068] In the battery pack of this embodiment, both the first and second connecting pipes are connected to the same flange. The flange spans across the first and second connecting pipes to reduce the number of flanges. The flange spanning across the first and second connecting pipes is installed as a whole in the housing, which simplifies the installation of the flanges and makes the installation of the flanges more convenient.

[0069] The solutions of the embodiments disclosed herein can be applied, but are not limited to, to battery packs, electrical devices including battery packs, or energy storage devices including battery packs.

[0070] This disclosure provides an energy storage device, including a battery pack and a mounting box according to any embodiment. The battery pack is disposed in the mounting box and is capable of storing electricity.

[0071] Energy storage devices can be applied to, but are not limited to, energy storage containers, energy storage cabinets, etc.

[0072] This disclosure provides an electrical device, including an electrical main body and a battery pack according to any embodiment. The battery pack is disposed on the electrical main body and provides power to the electrical main body.

[0073] Electrical devices can include, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, and spacecraft. Among them, electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, while spacecraft can include airplanes, rockets, space shuttles, and spacecraft.

[0074] In the following embodiments, for ease of explanation, a vehicle is used as an example to illustrate the electrical device according to an embodiment of this disclosure. The vehicle can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery pack is installed inside the vehicle, and the battery pack can be located at the bottom, front, or rear of the vehicle. The battery pack can be used to power the vehicle; for example, the battery pack can serve as the vehicle's operating power source. The vehicle's main electrical component includes a controller and a motor. The controller is used to control the battery to supply power to the motor, for example, to meet the power needs of the vehicle during starting, navigation, and driving.

[0075] In one embodiment of this disclosure, the battery pack can not only serve as the operating power source for the vehicle, but also as the driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0076] The battery pack of this embodiment, as shown in Figures 1-4 and 9-11, includes a housing 6, individual battery cells, a thermal management component 1, a flange 2, a first connecting pipe 3, and a second connecting pipe 4. The housing 6 has a receiving cavity 6a and a mounting hole 6b communicating with the receiving cavity 6a. The individual battery cells are located within the receiving cavity 6a, and the thermal management component 1 is located within the receiving cavity 6a to cool the individual battery cells. The mounting hole 6b is used to prevent temperature-regulating fluid from entering or exiting the thermal management component 1. The flange 2 covers the mounting hole 6b and is mounted on the housing 6. The first connecting pipe 3 is connected to both the flange 2 and the thermal management component 1 to provide temperature-regulating fluid. The second connecting pipe 4 is connected to both the flange 2 and the thermal management component 1 to discharge temperature-regulating fluid. The flange 2 spans between the first connecting pipe 3 and the second connecting pipe 4.

[0077] The housing 6 refers to a structure with a storage space. The individual battery cells are located in the housing 6, and the housing 6 accommodates the individual battery cells of the battery pack.

[0078] The battery pack can contain multiple individual cells, which can be connected in series, parallel, or a combination thereof. A combination of series and parallel connections refers to multiple individual cells being connected in both series and parallel configurations. Multiple individual cells can be directly connected in series, parallel, or a combination thereof, and then the entire assembly is placed inside the housing 6. Alternatively, multiple individual cells can first be connected in series, parallel, or a combination thereof to form battery modules, and then these modules can be connected in series, parallel, or a combination thereof to form a single assembly, which is then placed inside the housing 6. The battery pack may also include other structures; for example, it may include a busbar for electrical connection between the multiple individual cells.

[0079] A single battery cell can be a rechargeable battery, which is a structure that can be recharged after discharge to activate the active materials and continue to be used.

[0080] The battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments disclosed herein are not limited to this.

[0081] A single battery cell includes a casing and an electrode assembly. The electrode assembly includes positive and negative electrodes and a separator. The casing can be a sealed or unsealed structure. As an example, the casing is an unsealed structure, serving to protect the electrode assembly. The battery cell also includes a sealing bag located between the casing and the electrode assembly, used to encapsulate the electrode assembly. Specifically, the sealing bag can be a bag-shaped insulating component or an aluminum-plastic film.

[0082] For example, the thermal management component 1 is located between the housing 6 and the battery cell. The thermal management component 1 is in contact with the battery cell. Temperature regulating fluid flows into the thermal management component 1 through the first connector 3 and flows out through the second connector 4 to cool the battery cell.

[0083] For example, the thermal management component 1 can be a water-cooled device or an oil-cooled device, and the temperature-regulating fluid can be water or oil.

[0084] For example, the material of flange 2 is not limited, and can be metal.

[0085] For example, the materials of the first connector 3 and the second connector 4 are not limited, and can be metal, for example.

[0086] For example, the material of the housing 6 is not limited, and can be aluminum or steel.

[0087] In this embodiment, the first connecting pipe 3 and the second connecting pipe 4 are both connected to the same flange 2. The flange 2 spans across the first connecting pipe 3 and the second connecting pipe 4. The first connecting pipe 3 and the second connecting pipe 4 do not need to be connected to the corresponding flange 2 separately. The flange 2 spanning across the first connecting pipe 3 and the second connecting pipe 4 is installed as a whole on the housing 6. It is not necessary to install multiple flanges 2 to the housing 6, thereby simplifying the installation of the flange 2 and making the installation between the flange 2 and the housing 6 more convenient.

[0088] In one embodiment, please refer to Figures 1 to 4 and Figures 9 to 11. The battery pack includes a sealing ring 5, which is in sealing contact with the flange 2 and the housing 6 respectively. The space enclosed by the sealing ring 5 spans the first pipe 3 and the second pipe 4, and the mounting hole 6b is located inside the sealing ring 5.

[0089] For example, the material of the sealing ring 5 is not limited, and can be rubber.

[0090] It should be noted that, as shown in Figure 4, the space enclosed by the sealing ring 5 spans the first connecting pipe 3 and the second connecting pipe 4, meaning that the first connecting pipe 3 and the second connecting pipe 4 are nested within the same sealing ring 5, and the number of sealing rings 5 ​​is not limited.

[0091] For example, please refer to Figures 1 to 4. The number of sealing rings 5 ​​is one. A first connecting pipe 3 and a second connecting pipe 4 are sleeved in a sealing ring 5. The first connecting pipe 3 and the second connecting pipe 4 are sealed by a sealing ring 5.

[0092] For example, there are multiple sealing rings 5, and each sealing ring 5 is fitted with a first connecting pipe 3 and a second connecting pipe 4. Each sealing ring 5 can seal both the first connecting pipe 3 and the second connecting pipe 4. For each sealing ring 5, the same sealing ring 5 is fitted with both the first connecting pipe 3 and the second connecting pipe 4.

[0093] For example, there are two sealing rings 5, which are arranged along the direction of the flange 2 and the housing 6. Each of the two sealing rings 5 ​​is fitted with a first connecting pipe 3 and a second connecting pipe 4.

[0094] In this embodiment, the sealing ring 5 makes sealing contact with the flange 2 and the housing 6 respectively. The space enclosed by the sealing ring 5 spans the first pipe 3 and the second pipe 4. The first pipe 3 and the second pipe 4 can be sealed by the same sealing ring 5, without the need to seal the first pipe 3 and the second pipe 4 separately. This reduces the possible leakage points on the housing 6 and helps to improve the sealing reliability between the flange 2 and the housing 6.

[0095] In one embodiment, please refer to Figures 1 to 4 and Figures 9 to 10. Along the arrangement direction of the first connecting pipe 3 and the second connecting pipe 4, the first connecting pipe 3 and the second connecting pipe 4 are both located on the same side of the housing 6.

[0096] For example, the direction shown by R1 in Figure 9 is the arrangement direction of the first connector 3 and the second connector 4.

[0097] In this embodiment, the first connecting pipe 3 and the second connecting pipe 4 are both located on the same side of the housing 6, so that the first connecting pipe 3 and the second connecting pipe 4 can be as close as possible, which is beneficial to reducing the area of ​​the flange 2, and consequently to reducing the volume of the space enclosed by the sealing ring 5. The smaller sealing ring 5 is beneficial to improving the sealing reliability between the flange 2 and the housing 6.

[0098] It is understood that the positional relationship between the first connector 3 and the second connector 4 is not limited. For example, along the arrangement direction of the first connector 3 and the second connector 4, the first connector 3 and the second connector 4 are located on different sides of the same side wall of the housing 6.

[0099] In one embodiment, please refer to Figure 3, the center distance between the first pipe 3 and the second pipe 4 on the same side is 40mm to 60mm.

[0100] mm is a unit of length, representing millimeters. The center distance between the first connector 3 and the second connector 4 can be measured using vernier calipers.

[0101] For example, the dimension S1 shown in Figure 3 is the center distance between the first connector 3 and the second connector 4, 40mm≤S1≤60mm.

[0102] For example, the center distance between the first connector 3 and the second connector 4 can be 40mm, 50mm, 55mm, or 60mm.

[0103] In this embodiment, the center distance between the first pipe 3 and the second pipe 4 is limited to a reasonable range. On the one hand, this provides sufficient operating space for the first pipe 3 and the second pipe 4 to be connected to the flange 2 and the thermal management component 1 respectively. On the other hand, the center distance between the first pipe 3 and the second pipe 4 helps to reduce the dimensions of the flange 2 and the sealing ring 5 in the arrangement direction of the first pipe 3 and the second pipe 4, so as to improve the sealing reliability between the flange 2 and the housing 6.

[0104] It is understood that the center distance between the first connector 3 and the second connector 4 is not limited. For example, the center distance between the first connector 3 and the second connector 4 can be less than 40mm or greater than 60mm.

[0105] In one embodiment, please refer to Figures 1 to 4, the mounting hole 6b spans across the first connector 3 and the second connector 4.

[0106] It should be noted that the mounting hole 6b spans the first connecting pipe 3 and the second connecting pipe 4, meaning that the first connecting pipe 3 and the second connecting pipe 4 are fitted into the same mounting hole 6b.

[0107] For example, please refer to Figures 3 and 4. There is one flange 2, one sealing ring 5 and one mounting hole 6b. The first pipe 3 and the second pipe 4 are connected to the same flange 2. The first pipe 3 and the second pipe 4 pass through the same mounting hole 6b. A sealing ring 5 surrounds the outside of the first pipe 3 and the second pipe 4 and makes sealing contact with the flange 2 and the housing 6 respectively.

[0108] In this embodiment, the mounting hole 6b spans across the first pipe 3 and the second pipe 4, so that the number of mounting holes 6b can be one, so that the first pipe 3 and the second pipe 4 can be as close as possible, which is beneficial to reducing the size of the mounting hole 6b, and consequently to reducing the size of the flange 2 and the sealing ring 5, thereby improving the sealing reliability between the flange 2 and the housing 6.

[0109] In one embodiment, please refer to Figures 9 to 11, the first connector 3 and the second connector 4 pass through the corresponding mounting holes 6b.

[0110] For example, please refer to Figures 9 to 11. There are two mounting holes 6b. The first connector 3 passes through one of the mounting holes 6b, and the second connector 4 passes through the other mounting hole 6b.

[0111] For example, please refer to Figures 9 to 11. The mounting hole 6b is circular and its diameter can be 20 mm.

[0112] In this embodiment, the first connecting pipe 3 and the second connecting pipe 4 pass through the corresponding mounting holes 6b, such that there are at least two mounting holes 6b, and there is a certain distance between the two mounting holes 6b, so as to provide sufficient operating space for the first connecting pipe 3 and the second connecting pipe 4 to connect to the flange 2 and the thermal management component 1 respectively.

[0113] In one embodiment, please refer to Figure 4, the space enclosed by the sealing ring 5 has a span of 60mm to 80mm along the arrangement direction of the first connecting pipe 3 and the second connecting pipe 4.

[0114] For example, in Figure 4, the span of the space enclosed by the sealing ring 5 along the arrangement direction of the first pipe 3 and the second pipe 4 is S5, 60mm≤S5≤80mm.

[0115] For example, the span of the arrangement direction of the first pipe 3 and the second pipe 4 in the space enclosed by the sealing ring 5 can be 60mm, 70mm, 77mm, or 80mm.

[0116] For example, in Figure 4, the dimension of flange 2 along the arrangement direction of the first pipe 3 and the second pipe 4 is S8, 90mm≤S8≤110mm.

[0117] For example, the dimensions of flange 2 along the arrangement direction of the first pipe 3 and the second pipe 4 can be 90mm, 98mm, 100mm, 105mm, or 110mm.

[0118] In this embodiment, the span of the space enclosed by the sealing ring 5 along the arrangement direction of the first pipe 3 and the second pipe 4 is limited to a reasonable range. On the one hand, this provides sufficient operating space for the first pipe 3 and the second pipe section to be connected to the flange 2 and the thermal management component 1 respectively. On the other hand, the span of the space enclosed by the sealing ring 5 along the arrangement direction of the first pipe 3 and the second pipe 4 can limit the size of the flange 2 and the sealing ring 5, which is beneficial to improving the sealing reliability between the flange 2 and the housing 6.

[0119] It is understood that the span of the space enclosed by the sealing ring 5 along the arrangement direction of the first connector 3 and the second connector 4 is not limited. For example, the span of the space enclosed by the sealing ring 5 along the arrangement direction of the first connector 3 and the second connector 4 can be less than 60 mm or greater than 80 mm.

[0120] In one embodiment, please refer to Figures 4 to 6, the first connecting pipe 3, the second connecting pipe 4, and the flange 2 are integrally formed.

[0121] In this embodiment, the first connector 3, the second connector 4, and the flange 2 are integrally formed. On the one hand, this reduces the processing steps for connecting the first connector 3, the second connector 4, and the flange 2, thereby reducing the production cycle of the battery pack. On the other hand, the integrally formed first connector 3, the second connector 4, and the flange 2 have better overall integrity, which helps to reduce connection defects at the connection position of the first connector 3, the second connector 4, and the flange 2, thereby reducing the possibility of leakage of temperature-regulating fluid at the connection position of the first connector 3, the second connector 4, and the flange 2, and improving the sealing reliability between the flange 2 and the housing 6.

[0122] It is understood that the forming method of the first connecting pipe 3, the second connecting pipe 4, and the flange 2 is not limited. For example, the first connecting pipe 3, the second connecting pipe 4, and the flange 2 can be welded together.

[0123] In one embodiment, referring to Figures 4 and 5, an annular groove 2a is formed on the side of the flange 2 facing the mounting hole 6b. The space enclosed by the annular groove 2a spans the first pipe 3 and the second pipe 4, and the sealing ring 5 is located within the annular groove 2a.

[0124] In this embodiment, the sealing ring 5 is located within the annular groove 2a. On the one hand, this increases the contact area between the sealing ring 5 and the flange 2, which is beneficial to improving the connection strength between the sealing ring 5 and the flange 2, and also beneficial to improving the sealing reliability between the flange 2 and the housing 6. On the other hand, during the sealing contact process between the sealing ring 5 and the housing 6 and the flange 2 respectively, the annular groove 2a is provided on the side of the flange 2 near the housing 6 to facilitate the positioning of the sealing ring 5, making it easier for the sealing ring 5 to adhere to the flange 2 and facilitating the installation of the sealing ring 5.

[0125] It is understandable that the annular groove 2a may not be provided on the surface of flange 2 facing the mounting hole 6b, and the surface of flange 2 facing the mounting hole 6b may be flat, with the sealing ring 5 directly connected to the surface of flange 2 facing the mounting hole 6b.

[0126] In one embodiment, please refer to Figures 1 to 3, 5 and 6. The first pipe 3 and the second pipe 4 are both arranged across the opposite sides of the flange 2 along the thickness direction of the flange 2.

[0127] In this embodiment, the first connector 3 and the second connector 4 are both positioned across the opposite sides of the flange 2 along the thickness direction of the flange 2, such that the ends of the first connector 3 and the second connector 4 near the housing 6 along the thickness direction of the flange 2 can both pass through the mounting hole 6b into the housing 6. This ensures that the ends of the first connector 3 and the second connector 4 near the housing 6 along the thickness direction of the flange 2 are at least partially located inside the housing 6, facilitating the connection of the first connector 3 and the second connector 4 with the thermal management component 1 and improving the installation efficiency of the battery pack.

[0128] It is understood that the positional relationship between the first connecting pipe 3 and the second connecting pipe 4 is not restricted. For example, both the first connecting pipe 3 and the second connecting pipe 4 are located on the side of the flange 2 away from the housing 6 along the thickness direction of the flange 2.

[0129] In one embodiment, as shown in Figures 1 to 3, the flange 2 is located outside the housing 6.

[0130] For example, please refer to Figures 1 to 3. The flange 2 is connected to the outside of the housing 6, and the flange 2 does not span across the other outer surfaces of the housing 6.

[0131] In this embodiment, the flange 2 is located outside the housing 6. During the installation of the flange 2 on the housing 6, the outside of the housing 6 has a large operating space, which is beneficial to improving the convenience of connecting the flange 2 and the housing 6, and thus improving the efficiency of connecting the flange 2 and the housing 6, so as to reduce the production cycle of the battery pack.

[0132] It is understood that the positional relationship between flange 2 and housing 6 is not restricted. For example, flange 2 can be located inside housing 6.

[0133] In one embodiment, referring to Figures 1-3, 7, and 8, the thermal management component 1 includes a temperature-regulating body 11 and a hose 12. The hose 12 includes a first tube 121 and a second tube 122. The first tube 121 is connected to the temperature-regulating body 11 and a first connecting pipe 3 to provide temperature-regulating fluid to the temperature-regulating body 11, and the second tube 122 is connected to the temperature-regulating body 11 and a second connecting pipe 4 to discharge the temperature-regulating fluid from the temperature-regulating body 11.

[0134] For example, the material of the hose 12 is not limited, and can be rubber.

[0135] For example, please refer to Figures 1 to 3, 7 and 8. The temperature control body 11 includes a temperature control plate 111, a third connector 112 and a fourth connector 113. The third connector 112 is connected to the first pipe 121 and the temperature control plate 111 respectively to provide temperature control fluid to the temperature control plate 111. The fourth connector 113 is connected to the second pipe 122 and the temperature control plate 111 respectively to discharge the temperature control fluid in the temperature control plate 111.

[0136] For example, please refer to Figures 1 to 3, 7 and 8. The hose 12 also includes four connectors 123. The four connectors 123 are respectively disposed on opposite sides of the first tube 121 and the second tube 122 along the axial direction. The first tube 121 is connected to the first connector 3 and the third connector 112 respectively through the connectors 123 at both ends of the first tube 121 along the axial direction to provide temperature regulating fluid to the temperature regulating plate 111. The second tube 122 is connected to the second connector 4 and the fourth connector 113 respectively through the connectors 123 at both ends of the second tube 122 along the axial direction to discharge the temperature regulating fluid in the temperature regulating plate 111.

[0137] For example, the distance shown in S7 in Figure 3 is the distance between the center of the fourth pipe 113 and the surface of the flange 2 near the housing 6. The distance shown in S7 can be 132.9 mm.

[0138] For example, please refer to Figures 1 to 3, 5 and 6. The first pipe 3 passes through the flange 2. Along the axial direction of the first pipe 3, the first pipe 3 has a first groove 3a on both sides near the flange 2. The first groove 3a engages with the connector 123 to securely connect the connector 123 to the first pipe 3.

[0139] For example, please refer to Figure 6. Along the axial direction of the first pipe 3, the sidewall of the first groove 3a near the flange 2 is an inclined surface.

[0140] For example, the angle shown in S4 in Figure 6 is the inclination angle of the side wall of the first groove 3a along the axial direction of the first pipe 3 near the flange 2. The angle shown in S4 can be in the range of 32° to 38°, where "°" represents degree. The angle can be measured using an angle measuring instrument.

[0141] For example, the second connector 4 has a second groove on each of its opposite sides along the axial direction near the flange 2, and the second groove has similar technical features to the first groove 3a. The third connector 112 has a third groove on the side along the axial direction near the temperature regulating plate 111, and the fourth connector 113 has a fourth groove on the side along the axial direction near the temperature regulating plate 111, and both the third groove and the fourth groove have similar technical features to the first groove 3a.

[0142] For example, please refer to Figures 5 and 6. The end faces of the two ends of the first pipe 3 along the axial direction are beveled to facilitate the connection between the connector 123 and the first pipe 3.

[0143] For example, the angle shown by S3 in Figure 6 is the inclination angle of the end faces of the first pipe 3 at both ends along the axial direction, and the angle shown by S3 can be 25°.

[0144] For example, the end faces of both ends of the second pipe 4 along the axial direction are also inclined planes, and the inclination angle of the inclined planes can also be 25°. The end faces of the third pipe 112 and the fourth pipe 113 along the axial direction away from the end of the temperature regulating plate 111 are both inclined planes, and the inclination angle of the inclined planes can also be 25°.

[0145] For example, please refer to Figures 1 to 3, 7 and 8. The relative positional relationship between the first connector 3 and the third connector 112 can be unrestricted along the direction that intersects the arrangement direction of the first connector 3 and the third connector 112. The relative positional relationship between the second connector 4 and the fourth connector 113 can also be unrestricted.

[0146] For example, please refer to Figures 1 to 3, 7 and 8. Along the direction intersecting the arrangement direction of the first connector 3 and the third connector 112, the first connector 3 and the third connector 112 are staggered, so that the first tube body 121 is arc-shaped, and the second connector 4 and the fourth connector 113 are staggered, so that the second tube body 122 is arc-shaped.

[0147] For example, the angle shown by S2 in Figure 3 is the angle corresponding to the arc-shaped second tube 122, and the angle shown by S2 can be 46.2°.

[0148] For example, the distance shown in S6 in Figure 3 is the center distance between the first connector 3 and the third connector 112, and the distance shown in S6 can be 44.7 mm.

[0149] For example, referring to Figure 8, the temperature regulating plate 111 has a temperature regulating channel 111a, and the third connector 112 is connected to the fourth connector 113 through the temperature regulating channel 111a. The temperature regulating fluid flows into the first pipe body 121 through the first connector 3, then into the temperature regulating channel 111a through the third connector 112, and is discharged to the second pipe body 122 through the fourth connector 113, and then discharged outside the casing 6 through the second connector 4. The temperature regulating channel 111a is arranged to cover the temperature regulating plate 111 as much as possible, so that the temperature regulating channel 111a is extended as much as possible, which is beneficial to improving the heat dissipation efficiency of the battery cells under normal use.

[0150] For example, along the direction in which the temperature regulating plate 111 is arranged with the battery cells, the surface of the temperature regulating plate 111 near the battery cells has an insulating layer to reduce the possibility of short circuit in the battery pack.

[0151] In this embodiment, both the first tube 121 and the second tube 122 are relatively soft channels. On the one hand, the relatively soft first tube 121 and the second tube 122 facilitate the flexible arrangement of the temperature regulating body 11 within the housing 6, making full use of the space within the housing 6 and enabling a more compact arrangement of the internal structure of the battery pack. On the other hand, the temperature regulating body 11 expands when heated, causing its position to shift. The relatively soft first tube 121 and the second tube 122 help reduce the impact of the movement of the temperature regulating body 11, thereby reducing the impact of the movement of the temperature regulating body 11 on the first connecting pipe 3 and the second connecting pipe 4. This reduces the possibility of loosening at the connection points of the first tube 121 with the first connecting pipe 3 and the temperature regulating body 11, as well as the possibility of loosening at the connection points of the second tube 122 with the second connecting pipe 4 and the temperature regulating body 11, thereby improving the sealing reliability between the flange 2 and the housing 6.

[0152] The battery pack of this embodiment, as shown in Figures 1-8, uses a single flange 2 for the first connector 3 and the second connector 4 to reduce the number of flanges 2 and sealing rings 5, thereby reducing potential leakage points on the housing 6 and improving the sealing reliability between the flange 2 and the housing 6. The first connector 3 and the second connector 4 are both located on the same side of the housing 6, with a center distance of 40mm to 60mm between them. The space enclosed by the sealing rings 5 ​​has a span of 60mm to 80mm along the arrangement direction of the first connector 3 and the second connector 4. The flange 2 is located outside the housing 6, providing sufficient operating space for the first connector 3 and the second connector 4 to connect to the flange 2 and the thermal management component 1, respectively. Mounting holes 6b can span across the first connector 3 and the second connector 4, or the first connector 3 and the second connector 4 can pass through corresponding mounting holes 6b. The first connector 3, the second connector 4, and the flange 2 are integrally formed to reduce the possibility of leakage of temperature-regulating fluid at the connection points between the first connector 3 and the flange 2 and between the second connector 4 and the flange 2. An annular groove 2a is formed on the side of flange 2 facing the mounting hole 6b to facilitate the installation of the sealing ring 5. The first connecting pipe 3 and the second connecting pipe 4 are both positioned across opposite sides of flange 2 along its thickness direction, facilitating connection between the first connecting pipe 3 and the second connecting pipe 4 and the thermal management component 1. The thermal management component 1 includes a temperature control body 11 and a flexible hose 12. The softer hose 12 helps reduce the impact of thermal expansion and contraction of the temperature control body 11 and also facilitates the arrangement of the third connecting pipe 112 and the fourth connecting pipe 113 within the housing 6. The temperature control body 11 may include a temperature control plate 111, a third connecting pipe 112, and a fourth connecting pipe 113. The flexible hose 12 also includes a connector 123. The two ends of the first pipe body 121 are connected to the first connecting pipe 3 and the third connecting pipe 112 respectively via the connector 123, and the two ends of the second pipe body 122 are connected to the second connecting pipe 4 and the fourth connecting pipe 113 respectively via the connector 123.

[0153] The above description is merely a preferred embodiment of this disclosure and is not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A battery pack, comprising: The housing has a receiving cavity and a mounting hole communicating with the receiving cavity; The battery cell is located within the receiving cavity; A thermal management component is located within the receiving cavity to cool the battery cell, and the mounting hole is used to allow temperature-regulating fluid to enter and exit the thermal management component; A flange is provided over the mounting hole, and the flange is installed in the housing; A first connecting pipe is connected to the flange and the thermal management component respectively to provide the temperature-regulating fluid; The second pipe is connected to the flange and the thermal management component respectively to discharge the temperature-regulating fluid; The flange spans between the first and second connecting pipes.

2. The battery pack according to claim 1, wherein, The battery pack includes a sealing ring that makes sealing contact with the flange and the housing respectively. The space enclosed by the sealing ring spans the first connecting pipe and the second connecting pipe, and the mounting hole is located inside the sealing ring.

3. The battery pack according to claim 2, wherein, Along the arrangement direction of the first and second connectors, both the first and second connectors are located on the same side of the housing.

4. The battery pack according to claim 3, wherein, The center distance between the first and second connectors on the same side is 40mm to 60mm.

5. The battery pack according to any one of claims 2 to 4, wherein, The mounting hole spans between the first connector and the second connector, or the first connector and the second connector respectively pass through the corresponding mounting hole.

6. The battery pack according to any one of claims 2 to 5, wherein, The space enclosed by the sealing ring has a span of 60mm to 80mm along the arrangement direction of the first and second connecting pipes.

7. The battery pack according to any one of claims 2 to 6, wherein, The flange has an annular groove on the side facing the mounting hole, and the space enclosed by the annular groove spans the first pipe and the second pipe, with the sealing ring located within the annular groove.

8. The battery pack according to any one of claims 1 to 7, wherein, The first connecting pipe, the second connecting pipe, and the flange are integrally formed.

9. The battery pack according to any one of claims 1 to 8, wherein, Both the first and second connecting pipes are positioned across the flange on opposite sides along the thickness direction of the flange.

10. The battery pack according to any one of claims 1 to 9, wherein, The flange is located on the outside of the housing.

11. The battery pack according to any one of claims 1 to 10, wherein, The thermal management component includes: Temperature control unit; The hose includes a first tube body and a second tube body, the first tube body being connected to the temperature-regulating body and the first connecting pipe respectively to provide the temperature-regulating fluid to the temperature-regulating body, and the second tube body being connected to the temperature-regulating body and the second connecting pipe respectively to discharge the temperature-regulating fluid from the temperature-regulating body.

12. An electrical appliance, comprising: The battery pack according to any one of claims 1 to 11; The power-consuming body has a battery pack disposed thereon, which provides power to the power-consuming body.

13. An energy storage device, comprising: The battery pack according to any one of claims 1 to 11 is capable of storing electricity; The battery pack is housed in the mounting box.

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