Functional module and energy storage equipment

Abstract

The utility model provides a functional module and energy storage equipment. The functional module comprises a first shell, a circuit board, a radiator and a first locking piece. The first housing is provided with a first hole. The circuit board is arranged on the first shell and provided with a second hole. The radiator is arranged on one side of the circuit board back to the first shell, a third hole is formed in the part, attached to the circuit board, of the radiator, and the third hole, the second hole and the first hole are aligned. The first locking piece sequentially penetrates through the third hole, the second hole and the first hole so that the radiator, the circuit board and the first shell can be fixedly connected. The radiator, the circuit board and the first shell are fixed, equivalently, the radiator is fixed to the first shell, the circuit board is clamped by the radiator and the first shell, the stability of the radiator is improved, the stability of the circuit board at the radiator is also improved, and therefore in the transportation and use process of the energy storage equipment, the energy storage equipment is convenient to transport and use. The amplitude of the radiator and the amplitude of the circuit board are reduced, so that the damage risk of pins of heating devices attached to the radiator is reduced, and the product reliability is improved.

Description

Technical Field

[0001] The present application relates to the field of vibration reduction of energy storage equipment, specifically to a functional module and energy storage equipment. Background Art

[0002] Energy storage devices can vibrate during transportation or use. The energy storage device contains a circuit board, which is equipped with a heat sink. The heat sink is relatively heavy, and some heating devices are attached to the heat sink, with the pins of the heating devices connected to the circuit board. When the energy storage device vibrates, the circuit board will vibrate along with the entire device, especially the portion of the circuit board with the heat sink. Due to the heavy mass of the heat sink, the amplitude of the reciprocating vibration is large, causing the pins of some heating devices attached to the heat sink to be subjected to greater fatigue stress, which can easily cause the pins of the heating devices to break, resulting in damage to the energy storage device and reduced product reliability. Utility Model Content

[0003] In view of this, the present application provides a functional module and energy storage device capable of reducing amplitude.

[0004] In one embodiment of the present application, a functional module is provided for use in an energy storage device. The functional module includes a first housing, a circuit board, a heat sink, and a first locking member. The first housing is provided with a first hole. The circuit board is disposed in the first housing and is provided with a second hole. The heat sink is disposed on the side of the circuit board facing away from the first housing. The portion of the heat sink that contacts the circuit board is provided with a third hole, and the third hole, the second hole, and the first hole are aligned. The first locking member is provided with the third hole, the second hole, and the first hole in sequence to securely connect the heat sink, the circuit board, and the first housing.

[0005] In the functional module provided by the present application, by fixing the radiator, the circuit board and the first shell, it is equivalent to fixing the radiator to the first shell, and making the radiator and the first shell clamp the circuit board, which not only improves the stability of the radiator, but also improves the stability of the circuit board at the radiator. Therefore, during the transportation and use of the energy storage device, the amplitude of the radiator and the circuit board is reduced, thereby reducing the risk of damage to the pins of the heating device attached to the radiator, and improving the reliability of the product.

[0006] In some embodiments, the heat sink is formed with an avoidance space, which passes through a side of the heat sink away from the circuit board and is connected to the third hole. The avoidance space allows the heat sink to avoid an installation path of the first locking piece.

[0007] In some embodiments, the radiator includes a bottom plate portion, a side plate portion and a plurality of fins. The side plate portion is arranged on the bottom plate portion. The bottom plate portion is attached to the circuit board and is provided with a third hole. The side plate portion is attached to the heating device in the energy storage device, and the plurality of fins are vertically arranged on the side plate portion.

[0008] In some embodiments, there are two side panels, which are parallel to each other and are respectively arranged on opposite sides of the bottom panel. The third hole is located between the two side panels. Multiple fins are respectively provided on the opposite sides of the two side panels. There is a gap between the fins of the two side panels, and part of the avoidance space is located in the gap. The avoidance space passes through the multiple fins between the two side panels and forms gaps in the multiple fins.

[0009] In some embodiments, there are two side panels, which are parallel to each other and are respectively arranged on opposite sides of the bottom panel. The third hole is located between the two side panels. Multiple fins are respectively provided on the facing sides of the two side panels. There is a gap between the fins of the two side panels, and the avoidance space is located in the gap.

[0010] In some embodiments, there are two side panels, which are parallel to each other and are respectively arranged on opposite sides of the bottom panel. The third hole is located between the two side panels. Multiple fins are arranged between the two side panels and connect the two side panels. The avoidance space passes through the multiple fins between the two side panels and forms through holes in the multiple fins.

[0011] In some embodiments, the heat sink is provided with at least two third holes along the length direction, and each third hole is aligned with a corresponding second hole and a corresponding first hole to accommodate a corresponding first fastener.

[0012] In some embodiments, the circuit board is provided with a plurality of fourth holes at the peripheral position of the radiator, the first shell is provided with a plurality of fifth holes, the fifth holes are aligned with the fourth holes, and the functional module further includes a plurality of second locking members, each second locking member is sequentially penetrated through the aligned fourth hole and fifth hole to fix the circuit board to the first shell.

[0013] In some embodiments, the first shell is formed with a supporting protrusion facing the circuit board, the supporting protrusion supports the circuit board, and the first hole is provided on the supporting protrusion.

[0014] In one embodiment of the present application, an energy storage device is further provided. The energy storage device includes a battery cell, a shell and a functional module in any of the above embodiments. The battery cell is arranged in a first shell, the first shell is arranged in the shell, and the circuit board is arranged between the first shell and the shell.

[0015] In the energy storage device provided in the present application, by fixing the heat sink, the circuit board and the first shell, it is equivalent to fixing the heat sink to the first shell, and the heat sink and the first shell clamp the circuit board, which not only improves the stability of the heat sink, but also improves the stability of the circuit board at the heat sink. Therefore, during the transportation and use of the energy storage device, the amplitude of the heat sink and the circuit board is reduced, thereby reducing the risk of damage to the pins of the heating device attached to the heat sink, and improving the reliability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional diagram of an energy storage device in one embodiment of the present application.

[0017] Figure 2 for Figure 1 Exploded view of the energy storage device in Figure 1.

[0018] Figure 3 for Figure 2 A cross-sectional view of the energy storage device in FIG.

[0019] Figure 4 for Figure 3 Enlarged view of IV in the middle.

[0020] Figure 5 for Figure 2 A three-dimensional diagram of the circuit board and heat sink.

[0021] Figure 6 for Figure 5 A three-dimensional view of the radiator in Figure 1.

[0022] Figure 7 This is a three-dimensional diagram of a heat sink in another embodiment of the present application.

[0023] Figure 8 This is a three-dimensional diagram of a heat sink in another embodiment of the present application.

[0024] Description of main component symbols

[0025] 100- Functional module 200- Energy storage device 300- Heating device

[0026] 201-battery core 202-housing 10-first shell

[0027] 11-first hole 12-support protrusion 20-circuit board

[0028] 21-second hole 30-radiator 31-third hole

[0029] 32-avoidance space 33-bottom plate 331-thermal connection layer

[0030] 34-side plate 35-fin 351-through hole

[0031] 36- gap 37- notch 40- first locking piece

[0032] 2021- bottom shell 2022- top shell 2023- side panel shell. DETAILED DESCRIPTION

[0033] The technical solution of the present application will be described below in conjunction with the drawings in the implementation mode of the present application. Obviously, the described implementation mode is only a part of the implementation mode of the present application, rather than all the implementation modes.

[0034] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a central component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0036] Energy storage devices can vibrate during transportation or use. The energy storage device contains a circuit board, which is equipped with a heat sink. The heat sink is relatively heavy, and some heating devices are attached to the heat sink, with the pins of the heating devices connected to the circuit board. When the energy storage device vibrates, the circuit board will vibrate along with the entire device, especially the portion of the circuit board with the heat sink. Due to the heavy mass of the heat sink, the amplitude of the reciprocating vibration is large, causing the pins of some heating devices attached to the heat sink to be subjected to greater fatigue stress, which can easily cause the pins of the heating devices to break, resulting in damage to the energy storage device and reduced product reliability.

[0037] In view of this, the present application provides a functional module and energy storage device that can reduce amplitude. The functional module is applied to the energy storage device, and the functional module includes a first shell, a circuit board, a heat sink and a first locking member. The first shell is provided with a first hole. The circuit board is arranged on the first shell and is provided with a second hole. The heat sink is arranged on the side of the circuit board facing away from the first shell, and the part of the heat sink that is in contact with the circuit board is provided with a third hole, and the third hole, the second hole and the first hole are aligned. The first locking member is sequentially penetrated with the third hole, the second hole and the first hole to fix the heat sink, the circuit board and the first shell in connection.

[0038] In the functional module provided by the present application, by fixing the radiator, the circuit board and the first shell, it is equivalent to fixing the radiator to the first shell, and making the radiator and the first shell clamp the circuit board, which not only improves the stability of the radiator, but also improves the stability of the circuit board at the radiator. Therefore, during the transportation and use of the energy storage device, the amplitude of the radiator and the circuit board is reduced, thereby reducing the risk of damage to the pins of the heating device attached to the radiator, and improving the reliability of the product.

[0039] The following is combined with Figures 1 to 8 , some embodiments of the present application are described in detail. In the absence of conflict, the following embodiments and features of the embodiments can be combined with each other.

[0040] like Figures 1 to 2 As shown, some embodiments of the present application provide a functional module 100 and an energy storage device 200. The energy storage device 200 includes a battery cell 201, a housing 202, and the functional module 100. The functional module 100 includes a first housing 10 and a circuit board 20. The battery cell 201 is disposed within the first housing 10. The first housing 10 and the battery cell 201 form a battery pack. The first housing 10, as the housing of the battery pack, can protect the battery cell 201. The first housing 10 is disposed within the housing 202. The circuit board 20 is disposed outside the first housing 10 and within the housing 202. The housing 202 can protect the first housing 10 and the circuit board 20.

[0041] For example, energy storage device 200 can be a portable power source for outdoor use, or a home energy storage system for storing energy in a home. Circuit board 20 can function as an inverter module to control the charging and discharging of battery cells 201, enabling battery cells 201 to power external devices or external devices to charge battery cells 201. Circuit board 20 can also function as a battery management module, providing intelligent management and maintenance for battery cells 201, monitoring their status, and preventing overcharging and over-discharging, thereby extending their service life.

[0042] Exemplarily, the volume and weight of the first shell 10 are greater than those of the circuit board 20. The circuit board 20 is arranged between the top of the first shell 10 and the top of the outer shell 202 to lower the center of gravity of the energy storage device 200 and improve the stability of the energy storage device 200. In addition, since the first shell 10 is located below the circuit board 20, the risk of damage to the circuit board 20 caused by the first shell 10 pressing down can be reduced.

[0043] In some embodiments, as Figures 2 to 4 As shown, the functional module 100 further includes a heat sink 30 and a first locking member 40. The first housing 10 is provided with a first hole 11, and the circuit board 20 is provided with a second hole 21. The heat sink 30 is provided on the side of the circuit board 20 facing away from the first housing 10. The portion of the heat sink 30 that contacts the circuit board 20 is provided with a third hole 31. The third hole 31, the second hole 21, and the first hole 11 are aligned in sequence. The first locking member 40 is sequentially inserted through the third hole 31, the second hole 21, and the first hole 11 to securely connect the heat sink 30, the circuit board 20, and the first housing 10.

[0044] For example, a heating device 300 is attached to the heat sink 30, and the heat sink 30 is used to dissipate heat from the heating device 300. The pins of the heating device 300 are connected to the circuit board 20, wherein the heating device 300 can be a semiconductor field effect transistor (MOS transistor) or the like. Due to the limited space of the energy storage device 200 and the compact arrangement of the components on the circuit board 20, the circuit board 20 and the first housing 10 can only be fixed to the first housing 10 by screws at the four corners of the circuit board 20 during installation. However, there is no space for screws in the middle part of the circuit board 20, resulting in the middle part of the circuit board 20 being suspended. During transportation or use of the energy storage device 200, the suspended middle part of the circuit board 20 vibrates greatly, especially when a large mass heat sink 30 is set in the middle part of the circuit board 20. The reciprocating amplitude of the middle part of the circuit board 20 is greater, causing the pins of the heating device 300 (such as a MOS transistor, etc.) on the circuit board 20 to be subjected to greater fatigue stress, which can easily cause fracture, resulting in failure of the circuit board 20 and damage to the energy storage device 200, thereby reducing the reliability of the product.

[0045] In the above-mentioned functional module 100, the heat sink 30, the circuit board 20 and the first shell 10 are fixed together by the first locking member 40, which is equivalent to fixing the heat sink 30 to the first shell 10 and making the heat sink 30 and the first shell 10 clamp the circuit board 20. This not only improves the stability of the heat sink 30, but also improves the stability of the circuit board 20 at the heat sink 30. Therefore, during the transportation and use of the energy storage device 200, the amplitude of the heat sink 30 and the circuit board 20 is reduced, thereby reducing the risk of damage to the pins of the heating device 300 attached to the heat sink 30, thereby improving the reliability of the product.

[0046] In addition, even if the heat sink 30 is located in the suspended part in the middle of the circuit board 20, fixing the heat sink 30, the circuit board 20 and the first shell 10 by the first locking piece 40 can enhance the stability of the suspended part in the middle of the circuit board 20, thereby reducing the amplitude of the vibration of the circuit board 20 caused by the shaking of the heat sink 30, avoiding damage to the pins of the heating device 300 attached to the heat sink 30 due to excessive amplitude, and improving the reliability of the product.

[0047] In some embodiments, as Figures 4 to 6As shown, the heat sink 30 is formed with an escape space 32. The escape space 32 runs through the side of the heat sink 30 away from the circuit board 20 and connects to the third hole 31. The escape space 32 allows the heat sink 30 to avoid the installation path of the first fastener 40. When installing the first fastener 40, the first fastener 40 enters the escape space 32 from the side of the heat sink 30 away from the circuit board 20, moves along the escape space 32 to the third hole 31, and then passes through the third hole 31, the second hole 21, and then enters the first hole 11, thereby securing the heat sink 30, the circuit board 20, and the first housing 10 with the first fastener 40.

[0048] Exemplarily, the first fastening member 40 is a screw, the first hole 11 has an internal thread, the third hole 31 and the second hole 21 are through holes, the axes of the first hole 11, the third hole 31 and the second hole 21 are perpendicular to the circuit board 20, and the avoidance space 32 extends in a direction perpendicular to the circuit board 20 so that the first fastening member 40 is installed in cooperation with the internal thread of the first hole 11.

[0049] In some embodiments, the heat sink 30 includes a bottom plate portion 33, a side plate portion 34 and a plurality of fins 35. The side plate portion 34 is arranged on the bottom plate portion 33. The bottom plate portion 33 is attached to the circuit board 20 and is provided with a third hole 31. The side plate portion 34 is provided for the heating device 300 to be attached to absorb the heat of the heating device 300. The plurality of fins 35 are vertically arranged on the side plate portion 34 to play a major heat dissipation role.

[0050] Exemplarily, the pins of the heating device 300 are perpendicular to the circuit board 20 , and the side panels 34 are perpendicular to the bottom panel 33 , so that the heating device 300 fits the side panels 34 , reducing the risk of bending the pins of the heating device 300 .

[0051] In some embodiments, there are two side panels 34 , which are parallel to each other and are respectively arranged on opposite sides of the bottom panel 33 . The third hole 31 is located between the two side panels 34 , and multiple fins 35 are respectively provided on the facing sides of the two side panels 34 to increase the number of fins 35 and thus improve the heat dissipation efficiency.

[0052] Optionally, a gap 36 is provided between the fins 35 of one side panel 34 and the fins 35 of the other side panel 34. That is, the fins 35 between the two side panels 34 are not connected. The gap 36 can increase the space for airflow, thereby improving heat dissipation efficiency and reducing the weight of the heat sink 30. In addition, the gap 36 makes the heat sink 30 open in the height direction, avoiding the need for a closed loop space in the heat sink 30, thereby simplifying the manufacturing process of the heat sink 30.

[0053] Optionally, in order to ensure that the fins 35 have a sufficiently large heat dissipation area, the width of the gap 36 should not be too large. For example, in some embodiments, the width of the gap 36 is smaller than the radial dimension of the first locking piece 40. At this time, a portion of the avoidance space 32 can be located in the gap 36, and another portion of the avoidance space 32 needs to pass through the multiple fins 35 between the two side panels 34 and form notches 37 in the multiple fins 35, thereby allowing the first locking piece 40 to enter the third hole 31 along the avoidance space 32.

[0054] Optionally, the heating device 300 is attached to opposite sides of the two side panels 34 , and the opposite sides of the two side panels 34 are also provided with a plurality of fins 35 in the portion not attached to the heating device 300 to improve heat dissipation efficiency.

[0055] In some embodiments, the comparison Figure 6 and Figure 7 The width of the gap 36 can also be equal to or greater than the radial dimension of the first locking piece 40. At this time, the avoidance space 32 can be completely located in the gap 36, and there is no need to form a notch 37 on the fin 35. The wider gap 36 can make it easier for the first locking piece 40 to enter the third hole 31 along the avoidance space 32, thereby improving the installation convenience of the first locking piece 40.

[0056] In some embodiments, the comparison Figure 6 and Figure 8 The gap 36 may not exist. Specifically, the side panels 34 have two parallel side panels 34 and are located on opposite sides of the bottom panel 33. The third hole 31 is located between the two side panels 34. The multiple fins 35 are located between the two side panels 34 and connect the two side panels 34. This increases the heat dissipation area of ​​the fins 35, thereby improving heat dissipation efficiency. In this case, the clearance space 32 extends through the multiple fins 35 between the two side panels 34 and forms through-holes 351 in the multiple fins 35. When installing the first fastener 40, the first fastener 40 passes through the through-holes 351 along the clearance space 32 to enter the third hole 31.

[0057] In some embodiments, as Figures 4 to 6 As shown, the heat sink 30 is provided with at least two third holes 31 along the length direction. Correspondingly, the circuit board 20 is provided with the same number of second holes 21, and the first shell 10 is provided with the same number of first holes 11. Each third hole 31 is aligned with a corresponding second hole 21 and a corresponding first hole 11 to accommodate a corresponding first fastener 40, so that the connection between the heat sink 30 and the first shell 10 is more stable, reducing the risk of the heat sink 30 warping along the length direction.

[0058] Exemplarily, the bottom plate portion 33 is rectangular, and a third hole 31 is respectively provided at both ends of the bottom plate portion 33 along the length direction, so that the heat sink 30 and the first housing 10 are fixedly connected via two first fasteners 40 .

[0059] In some embodiments, the circuit board 20 is provided with a plurality of fourth holes (not shown) at the peripheral position of the heat sink 30, and the first shell 10 is provided with a plurality of fifth holes (not shown), and the fifth holes are aligned one by one with the fourth holes. The functional module 100 also includes a plurality of second locking members (not shown), and each second locking member is sequentially penetrated through a fourth hole and a fifth hole that are aligned, so that the circuit board 20 can also be fixedly connected to the first shell 10 at the peripheral position of the heat sink 30, further improving the stability of the heat sink 30, and preventing the circuit board 20 from being in a suspended state at the position of the heat sink 30, thereby further reducing the amplitude of the heat sink 30 and the circuit board 20 during the transportation and use of the energy storage device 200, reducing the risk of damage to the pins of the heating device 300, and improving product reliability.

[0060] Optionally, the circuit board 20 is rectangular, and the four right corners of the circuit board 20 are respectively fixedly connected to the first shell 10 to fix the circuit board 20 and the first shell 10.

[0061] In some embodiments, as Figure 4 As shown, the first shell 10 is formed with a supporting protrusion 12 toward the circuit board 20, and the supporting protrusion 12 is used to support the circuit board 20. The first hole 11 is provided on the supporting protrusion 12. The supporting protrusion 12 can support the circuit board 20 at a certain height from the first shell 10, so that there is a certain gap between the side of the circuit board 20 facing the first shell 10 and the first shell 10, so as to reduce the risk of direct contact between the electronic components of the circuit board 20 and the first shell 10.

[0062] In some embodiments, as Figure 1 and Figure 2 As shown, the outer shell 202 includes a bottom shell 2021, a top shell 2022 and two side panel shells 2023. The first shell 10 is fixedly installed on the bottom shell 2021. A chamber for accommodating the battery cell 201 is formed between the first shell 10 and the bottom shell 2021. The top shell 2022 is arranged on the bottom shell 2021 and covers the circuit board 20. The two side panel shells 2023 are arranged on opposite sides of the bottom shell 2021. The two side panel shells 2023 are also arranged on the first shell 10 to improve structural stability. The two side panel shells 2023 are provided with slots or buttons for users to operate and use the energy storage device 200.

[0063] In some embodiments, as Figure 5As shown, the side panel portion 34 and the heating device 300 are provided with aligned mounting holes (not shown), and each mounting hole is used to install a screw, so that each heating device 300 is fixedly connected to the side panel portion 34 by a screw, thereby making the heating device 300 more stably fit the side panel portion 34, reducing the risk of the heating device 300 detaching from the side panel portion 34.

[0064] In some embodiments, as Figure 4 As shown, a thermally conductive connection layer 331 is provided between the bottom plate portion 33 and the circuit board 20. The bottom plate portion 33 is fixedly connected to the circuit board 20 via the thermally conductive connection layer 331, ensuring a stable connection between the heat sink 30 and the circuit board 20 before the circuit board 20 is mounted to the first housing 10 via the first locking member 40, thereby reducing the risk of the heat sink 30 separating from the circuit board 20. For example, the thermally conductive connection layer 331 may be a layer of thermally conductive adhesive or a solder layer, as long as it can connect the bottom plate portion 33 and the circuit board 20 and conduct heat.

[0065] In addition, those skilled in the art should recognize that the above embodiments are merely intended to illustrate the present application and are not intended to limit the present application. As long as they are within the spirit of the present application, appropriate changes and modifications to the above embodiments are within the scope of disclosure of the present application.

Claims

1. A functional module, applied to energy storage equipment, characterized in that: The functional modules include: A first housing is provided with a first hole; a circuit board, disposed in the first housing and having a second hole; a heat sink disposed on a side of the circuit board facing away from the first housing, wherein a portion of the heat sink that contacts the circuit board is provided with a third hole, wherein the third hole, the second hole, and the first hole are aligned; and A first locking member is provided, wherein the first locking member passes through the third hole, the second hole and the first hole in sequence, so as to fix the heat sink, the circuit board and the first housing in connection.

2. The functional module according to claim 1, wherein: The heat sink is formed with an avoidance space, which passes through a side of the heat sink away from the circuit board and is connected to the third hole. The avoidance space allows the heat sink to avoid an installation path of the first locking piece.

3. The functional module according to claim 2, wherein: The radiator includes a bottom plate portion, a side plate portion and a plurality of fins. The side plate portion is arranged on the bottom plate portion. The bottom plate portion is attached to the circuit board and is provided with the third hole. The side plate portion is attached to the heating device in the energy storage device. The plurality of fins are vertically arranged on the side plate portion.

4. The functional module according to claim 3, wherein: There are two side panels, which are parallel to each other and are respectively arranged on opposite sides of the bottom panel. The third hole is located between the two side panels. A plurality of fins are respectively provided on the facing sides of the two side panels. There is a gap between the fins of the two side panels, and part of the avoidance space is located in the gap. The avoidance space passes through the plurality of fins between the two side panels and forms a gap in the plurality of fins.

5. The functional module according to claim 3, wherein: There are two side plates, which are parallel to each other and are respectively arranged on opposite sides of the bottom plate. The third hole is located between the two side plates. A plurality of fins are respectively provided on the facing sides of the two side plates. There is a gap between the fins of the two side plates, and the avoidance space is located in the gap.

6. The functional module according to claim 3, wherein: There are two side panels, which are parallel to each other and are respectively arranged on opposite sides of the bottom panel. The third hole is located between the two side panels. The plurality of fins are arranged between the two side panels and connect the two side panels. The avoidance space passes through the plurality of fins between the two side panels and forms through holes in the plurality of fins.

7. The functional module according to any one of claims 1 to 6, wherein: The heat sink is provided with at least two third holes along the length direction, and each of the third holes is aligned with a corresponding second hole and a corresponding first hole to accommodate a corresponding first locking member.

8. The functional module according to any one of claims 1 to 6, wherein: The circuit board is provided with a plurality of fourth holes at the peripheral position of the radiator, and the first shell is provided with a plurality of fifth holes, and the fifth holes are aligned with the fourth holes. The functional module also includes a plurality of second locking members, and each of the second locking members is sequentially penetrated through the aligned fourth hole and the fifth hole to fix the circuit board to the first shell.

9. The functional module according to any one of claims 1 to 6, wherein: The first housing is formed with a supporting protrusion facing the circuit board, the supporting protrusion supports the circuit board, and the first hole is provided on the supporting protrusion.

10. An energy storage device, characterized in that: The energy storage device includes a battery cell, a shell and a functional module according to any one of claims 1 to 9, the battery cell is arranged in the first shell, the first shell is arranged in the shell, and the circuit board is arranged between the first shell and the shell.

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