Battery module and energy storage equipment

Abstract

The utility model is suitable for the field of energy storage equipment, and discloses a battery module and energy storage equipment. The battery module is applied to the energy storage equipment, and comprises a first bracket, a battery cell assembly and a circuit assembly, the battery cell assembly is fixed on one side of the first support. And the circuit assembly is fixed on one side, back on to the battery core assembly, of the bracket. According to the battery module and the energy storage equipment, the structure of the battery module can be simplified, the assembly of the battery module is simplified, the manufacturing cost is reduced, and meanwhile, the occupied space of the battery module is also reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of energy storage devices, in particular to a battery module and an energy storage device. BACKGROUND

[0002] An energy storage device is a device that can store electrical energy and supply power to electronic devices, which is widely used in various industries, for example, used for power supply to vehicles, robotic vacuum cleaners and other devices in outdoor environments.

[0003] As the most core structure in the energy storage device, the battery module generally includes battery cells and a circuit board for controlling the battery cells. In order to firmly install the battery cells and the circuit board, the existing battery module has a complex structure and high cost, which is not conducive to production. CONTENT OF THE INVENTION

[0004] The present application aims to provide a battery module and an energy storage device, which aims to solve the technical problem of high cost of the battery module.

[0005] To achieve the above-mentioned purpose, the present application provides a battery module applied to an energy storage device, comprising:

[0006] a first support;

[0007] a battery cell assembly fixed to one side of the first support;

[0008] a circuit assembly fixed to the side of the first support away from the battery cell assembly.

[0009] In the battery module of the present application, the side of the first support away from the battery cell assembly is provided with a connecting piece,

[0010] the connecting piece is connected to the circuit assembly, and the circuit assembly and the surface of the first support away from the battery cell assembly have a spacing.

[0011] In the battery module of the present application, the circuit assembly includes a protection circuit board, and the connecting piece includes a plurality of first connecting columns connected to the protection circuit board.

[0012] In the battery module of the present application, the circuit assembly includes an inverter circuit assembly, and the connecting piece includes a plurality of second connecting columns connected to the inverter circuit assembly.

[0013] In the battery module of the present application, the inverter circuit assembly includes an inverter circuit board and a shielding support, the shielding support is connected to the inverter circuit board, the shielding support is located on the side of the inverter circuit board facing the first support, and the plurality of second connecting columns are connected to the shielding support.

[0014] The shielding support of the battery module of the present application is provided with a coaming, which surrounds at least part of the edges of the inverter circuit board.

[0015] The shielding support of the battery module of the present application is provided with a mounting rack, which is used for mounting the first heat dissipation fan, so that the first heat dissipation fan can dissipate heat from the inverter circuit board.

[0016] The circuit assembly of the battery module of the present application comprises a protection circuit board and an inverter circuit assembly, the protection circuit board is arranged on the side of the inverter circuit assembly facing the first support, and there is a spacing between the inverter circuit assembly and the protection circuit board.

[0017] The battery module of the present application comprises a plurality of arrayed battery cells, the first support is provided with a plurality of arrayed mounting holes, a plurality of the mounting holes and a plurality of the battery cells correspond one-to-one, and the end of each battery cell is embedded in the corresponding mounting hole.

[0018] The first support of the battery module of the present application is further provided with an extension part extending towards the battery cell assembly, the extension part covers at least part of the circumferential side of the battery cell assembly, and the extension part is used for being fixed to the shell of the energy storage device.

[0019] The battery module of the present application further comprises a second support, which is fixed to the other side of the battery cell assembly to be clamped on both sides of the battery cell assembly with the first support.

[0020] The present application also provides an energy storage device comprising a shell and the battery module of any one of the above.

[0021] The battery module is arranged in the shell.

[0022] The energy storage device of the present application comprises a first side shell and a second side shell connected to each other, the first side shell and the second side shell surround to form a mounting cavity, the battery module is mounted in the mounting cavity, and the first support is connected to the first side shell and the second side shell respectively.

[0023] The energy storage device of the present application further comprises a bottom shell connected to the first side shell and the second side shell, and the first support is connected to the bottom shell.

[0024] The energy storage device of the present application further comprises at least one of the following structures:

[0025] An electrical connection interface is electrically connected to the battery module, and the electrical connection interface comprises at least one of the following: a USB interface, an AC socket, a DC interface, an emergency starting power output interface, and a cigar lighter socket.

[0026] A charging interface is electrically connected to the battery module, and is arranged on the shell and used for charging the battery module.

[0027] The battery module and the energy storage device provided by the application have the following advantages. The first support of the battery module can fix both the battery cell assembly and the circuit assembly, and the circuit assembly no longer needs an additional support. Therefore, the structure of the battery module is simplified, the assembly of the battery module is simplified, the manufacturing cost is reduced, and the production of the battery module is facilitated. Meanwhile, since the battery cell assembly and the circuit assembly share the first support, the space occupied by the additional support can be reduced, so that the space occupied by the battery module is reduced. When the battery module is applied to the energy storage device, the cost of the energy storage device is reduced, the volume of the energy storage device is simplified, and the energy storage device is convenient to carry. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative labor.

[0029] Figure 1 is one of the structural schematic diagrams of the battery module provided by the embodiments of the present application;

[0030] Figure 2 is another of the structural schematic diagrams of the battery module provided by the embodiments of the present application;

[0031] Figure 3 is an exploded view of the battery module provided by the embodiments of the present application;

[0032] Figure 4 is one of the internal structural schematic diagrams of the energy storage device provided by the embodiments of the present application;

[0033] Figure 5 is another of the internal structural schematic diagrams of the energy storage device provided by the embodiments of the present application;

[0034] Figure 6 is an exploded view of the energy storage device provided by the embodiments of the present application.

[0035] Explanation of reference numerals:

[0036] 100: battery module;

[0037] 10: first support; 10a: mounting hole;

[0038] 11: first connecting column; 12: second connecting column; 13: extension; 131: fixing column;

[0039] 20: battery cell assembly; 21: battery cell;

[0040] 30: circuit assembly;

[0041] 31: protection circuit board;

[0042] 32: inverter circuit assembly; 321: inverter circuit board; 322: shielding bracket; 3221: surrounding board; 3222: mounting bracket;

[0043] 40: second bracket;

[0044] 200: housing; 201: first side housing; 202: second side housing; 203: bottom housing;

[0045] 301: first cooling fan; 302: second cooling fan;

[0046] 400: interface circuit board. DETAILED DESCRIPTION

[0047] 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 part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without any creative work under the premise that the embodiments in the present application are within the scope of protection of the present application.

[0048] It should be noted that all the directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture, and if the specific posture changes, the directionality indications also change accordingly.

[0049] It should also be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there can be a middle element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or indirectly connected to the other element through a middle element.

[0050] In addition, the descriptions in the present application involving "first", "second", etc. are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0051] The energy storage device is a device that can store electric energy and supply power to electronic devices. The battery module, as the core structure in the energy storage device, generally includes battery cells and a circuit board for controlling the battery cells. In order to stably install the battery cells and the circuit board, battery supports are installed at the upper and lower ends of the battery cells, and additional supports are also made to fix the circuit board. Therefore, the existing battery module has a complex structure, complex assembly, high cost, and is not conducive to production.

[0052] Therefore, the present application provides a battery module and an energy storage device, which can simplify the structure of the battery module, simplify the assembly of the battery module, save manufacturing costs, and also reduce the occupied space of the battery module.

[0053] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments and features in the embodiments can be combined with each other without conflict.

[0054] As shown in Figure 1 and Figure 2 The battery module 100 provided by the embodiments of the present application is applied to an energy storage device, and the battery module 100 includes a first support 10, a battery cell assembly 20, and a circuit assembly 30.

[0055] The battery cell assembly 20 is fixed to one side of the first support 10. The circuit assembly 30 is fixed to the side of the first support 10 opposite to the battery cell assembly 20.

[0056] It should be noted that the battery cell assembly 20 can supply power to the energy storage device, and the circuit assembly 30 can be used to control and protect the charging and discharging of the battery cell assembly 20.

[0057] It should be noted that the first support 10 itself can serve as an end cover on one side of the battery cell assembly 20 to stabilize the battery cell assembly 20 and connect the structures of the plurality of battery cells 21 inside the battery cell assembly 20. In the present application, the circuit assembly 30 is directly fixed on the first support 10, that is, on the end cover on one side of the battery cell assembly 20, thereby eliminating the need for an additional circuit board mounting support and making the circuit assembly 30 and the battery cell assembly 20 more compact and easier to electrically connect.

[0058] In the battery module 100 of the present application, the first support 10 of the battery module 100 can fix both the battery cell assembly 20 and the circuit assembly 30, and the circuit assembly 30 no longer needs an additional support, thereby simplifying the structure of the battery module 100, simplifying the assembly of the battery module 100, reducing manufacturing costs, and facilitating production. At the same time, since the battery cell assembly 20 and the circuit assembly 30 share the first support 10, the space occupied by the additional support can be reduced to reduce the space occupied by the battery module 100.

[0059] As shown in Figure 2 and Figure 3 , in the present application, the side of the first support 10 away from the battery cell assembly 20 is provided with a connecting piece. The connecting piece is connected to the circuit assembly 30, and the circuit assembly 30 and the surface of the first support 10 away from the battery cell assembly 20 have a spacing. The circuit assembly 30 is fixed by the connecting piece, which can be stably mounted on one side of the first support 10. Moreover, under the support of the connecting piece, the circuit assembly 30 and the first support 10 have a spacing, so that the circuit assembly 30 and the battery cell assembly 20 have a spacing. Since the circuit assembly 30 and the battery cell assembly 20 generate heat during operation, a certain spacing between them can ensure that the circuit assembly 30 and the battery cell assembly 20 have a certain heat dissipation space, avoid heat accumulation, ensure effective heat dissipation, and thus ensure the efficient operation of the circuit assembly 30 and the battery cell assembly 20.

[0060] As shown in Figure 2 , in the present application, one side of the first support 10 is actually fixed and attached to one end of the battery cell assembly 20, so that the circuit assembly 30 and the first support 10 need to be spaced by a connecting piece to ensure that the circuit assembly 30 and the battery cell assembly 20 have a spacing.

[0061] As shown in Figures 1 to 3As shown in this embodiment, the circuit assembly 30 includes a protection circuit board 31, and the connector includes a plurality of first connecting posts 11 connected to the protection circuit board 31. It should be noted that the protection circuit board 31 is electrically connected to the battery cell assembly 20, and it can protect the battery cell assembly 20 from overcharging, over-discharging, overcurrent, short circuits, and overheating during charging and discharging. In this application, connecting the protection circuit board 31 through the plurality of first connecting posts 11 allows for a stable installation of the protection circuit board 31 and ensures that the protection circuit board 31 is close to the battery cell assembly 20, thus ensuring effective protection for the battery cell assembly 20. Furthermore, the plurality of first connecting posts 11 also provides a certain distance between the protection circuit board 31 and the battery cell assembly 20, ensuring effective heat dissipation for both. Of course, in other embodiments, the connector includes a first connecting bracket, which connects and supports the protection circuit board 31; for example, the first connecting bracket connects and supports the two side edges of the protection circuit board 31.

[0062] For example, the protection circuit board 31 is provided with a first connection hole, which corresponds to the first connection post 11. When connecting the protection circuit board 31 and the first connection post 11, the first connection hole can be passed through a screw and threaded to the end of the first connection post 11 to achieve a stable installation of the protection circuit board 31.

[0063] For example, the first connecting post 11 is provided with a plurality of axially arranged reinforcing ribs on its periphery to increase the structural strength of the first connecting post 11 and ensure stable support for the protective circuit board 31.

[0064] like Figures 1 to 3 As shown in the embodiment of this application, the circuit assembly 30 includes an inverter circuit assembly 32, and the connector includes a plurality of second connecting posts 12, which are connected to the inverter circuit assembly 32. It should be noted that the inverter circuit assembly 32 is an electronic component that can convert direct current (DC) to alternating current (AC) to meet the usage requirements of various devices that require AC power. In this application, connecting the inverter circuit assembly 32 through the plurality of second connecting posts 12 ensures a stable installation of the inverter circuit assembly 32 and provides a certain distance between the inverter circuit assembly 32 and the battery cell assembly 20, thereby ensuring effective heat dissipation for both the inverter circuit assembly 32 and the battery cell assembly 20. Of course, in other embodiments, the connector includes a second connecting bracket, which connects to the supporting and protective circuit board 31. For example, the second connecting bracket connects to both sides of the supporting and protective circuit board 31.

[0065] For example, the inverter circuit assembly 32 is provided with a second connection hole, which corresponds to the second connection post 12. When connecting the inverter circuit assembly 32 and the second connection post 12, the second connection hole can be passed through a screw and threaded to the end of the second connection post 12 to achieve a stable installation of the inverter circuit assembly 32.

[0066] For example, the second connecting post 12 is provided with a plurality of axially arranged reinforcing ribs on its periphery to increase the structural strength of the second connecting post 12 and ensure stable support for the inverter circuit assembly 32.

[0067] like Figures 1 to 3 As shown in this embodiment, the circuit assembly 30 includes a protection circuit board 31 and an inverter circuit assembly 32. The protection circuit board 31 is disposed on the side of the inverter circuit assembly 32 facing the first support 10, and there is a gap between the inverter circuit assembly 32 and the protection circuit board 31. This allows the protection circuit board 31 to be closer to the cell assembly 20, so that the protection circuit board 31 can protect the cell assembly 20. In this embodiment, the inverter circuit assembly 32 and the protection circuit board 31 are electrically connected, and the protection circuit board 31 and the cell assembly 20 are electrically connected. Therefore, the above arrangement is also beneficial for electrical connection, making the structure of the battery module 100 more compact and reasonable. In addition, setting a gap between the inverter circuit assembly 32 and the protection circuit board 31 is also beneficial for independent heat dissipation between the inverter circuit assembly 32 and the protection circuit board 31.

[0068] For example, the length of the second connecting post 12 is longer than the length of the first connecting post 11. Multiple first connecting posts 11 are connected to and mounted on the protection circuit board 31, and multiple second connecting posts 12 are connected to and mounted on the inverter circuit assembly 32, such that the inverter circuit assembly 32 is located on the side of the protection circuit board 31 away from the first bracket 10, and there is a gap between the inverter circuit assembly 32 and the protection circuit board 31.

[0069] For example, the protection circuit board 31 is also provided with a plurality of positioning holes, and some of the second connecting posts 12 are respectively disposed in the plurality of positioning holes for connection with the inverter circuit assembly 32. In this way, some of the second connecting posts 12 can also serve as positioning posts during the installation of the protection circuit board 31, so as to facilitate the installation and fixation of the protection circuit board 31.

[0070] like Figures 1 to 3As shown, in the embodiment of the present application, the inverter circuit assembly 32 comprises an inverter circuit board 321 and a shielding bracket 322, the shielding bracket 322 is connected to the inverter circuit board 321, the shielding bracket 322 is located on the side of the inverter circuit board 321 facing the first bracket 10, and a plurality of second connecting columns 12 are connected to the shielding bracket 322. It should be noted that the inverter circuit board 321 can convert direct current into alternating current, and the shielding bracket 322 can shield external electromagnetic interference and avoid electromagnetic radiation of the inverter circuit board 321 to the outside, so as to ensure stable and reliable work of the circuit assembly 30. In the present application, the shielding bracket 322 is arranged on the side facing the first bracket 10, which can separate the cell assembly 20 and the inverter circuit board 321, especially separate the protection circuit board 31 and the inverter circuit board 321, so as to ensure that each circuit board of the battery module 100 can work stably and reliably.

[0071] Exemplarily, the side of the shielding bracket 322 facing the inverter circuit board 321 is provided with a plurality of third connecting columns (not shown in the figure), and the inverter circuit board 321 is provided with third connecting holes corresponding to the third connecting columns. When connecting the shielding bracket 322 and the inverter circuit board 321, a screw can be passed through the third connecting hole and threadedly connected to the end of the third connecting column, so as to realize stable connection between the inverter circuit board 321 and the shielding bracket 322.

[0072] As shown in the figure, Figures 1 to 3 In the embodiment of the present application, the shielding bracket 322 is provided with a surrounding plate 3221 surrounding at least part of the edge of the inverter circuit board 321. The surrounding plate 3221 can surround the inverter circuit board 321, thereby improving the shielding effect and further ensuring that each circuit board of the battery module 100 can work stably and reliably.

[0073] Exemplarily, the two sides of the shielding bracket 322 are bent towards the side of the inverter circuit board 321, so as to form the surrounding plate 3221 on both sides of the inverter circuit board 321. The shielding bracket 322 is integrally formed, which is beneficial to production and manufacturing. Of course, in other examples, the shielding bracket 322 can be provided with the surrounding plate 3221 around the inverter circuit board 321.

[0074] As shown in the figure, Figure 3 , Figure 5 and Figure 6As shown, in the embodiment of the present application, the shielding support 322 is provided with a mounting rack 3222, and the mounting rack 3222 is used to mount the first heat dissipation fan 301, so that the first heat dissipation fan 301 can dissipate heat for the inverter circuit board 321. By mounting the first heat dissipation fan 301 on the mounting rack 3222 to dissipate heat for the inverter circuit board 321, the stable and reliable operation of the inverter circuit assembly 32 can be further ensured, and the working efficiency is not affected by overheating. In the present application, the first heat dissipation fan 301 can be directly mounted on the shielding support 322, and other space of the energy storage device can not be occupied, thereby further reducing the volume of the energy storage device to facilitate carrying. Of course, in other embodiments, the first heat dissipation fan 301 can be directly mounted on other positions of the energy storage device to dissipate heat for the inverter circuit assembly 32.

[0075] Exemplarily, the mounting rack 3222 is located at the adjacent side of the two side enclosing plates 3221 of the shielding support 322, so that the two side enclosing plates 3221 of the shielding support 322 can also form a wind guide effect for heat dissipation of the first heat dissipation fan 301, so as to further improve the heat dissipation effect of the inverter circuit assembly 32.

[0076] As shown, Figures 1 to 3 In the embodiment of the present application, the battery cell assembly 20 includes a plurality of arrayed battery cells 21, the first support 10 is provided with a plurality of arrayed mounting holes 10a, the plurality of mounting holes 10a and the plurality of battery cells 21 are one-to-one corresponding, and the end of each battery cell 21 is embedded in the corresponding mounting hole 10a. The first support 10 can position and fix the plurality of battery cells 21 through the plurality of mounting holes 10a, so as to ensure that the battery cell assembly 20 is stable and compact as a whole. In the present application, since the first support 10 abuts against the battery cell assembly 20, the entire battery module 100 can be more compact and reasonable.

[0077] As shown, Figures 1 to 3 In the embodiment of the present application, the surface of the first support 10 away from the battery cell assembly 20 is provided with a plurality of connecting pieces (not shown in the figure), and after the battery cell 21 is placed in the mounting hole 10a, the connecting pieces are used to connect the electrodes at one end of the adjacent battery cells 21, for example, the connecting pieces are used to connect the positive electrode of one battery cell 21 and the negative electrode of another battery cell 21. In this way, the plurality of battery cells 21 can be connected through the plurality of connecting pieces, so as to ensure that the battery cell assembly 20 can provide high voltage and large current when outputting, and the power supply effect of the energy storage device on the external device is guaranteed.

[0078] Exemplarily, the plurality of connecting pieces are fixed on the first support 10 through screws, and the two ends of each connecting piece are respectively placed at the adjacent two mounting holes 10a, so that after the battery cell 21 is embedded in the corresponding mounting hole 10a, the electrode at one end of the battery cell 21 can be in contact with one end of the connecting piece.

[0079] For example, two of the multiple connecting tabs are connected to only one electrode, with the other end extending out of the first bracket 10. This allows other electrical components to be connected via these two connecting tabs to enable the battery cell assembly 20 to input or output electrical power. For instance, one connecting tab may be connected to the positive terminal of one battery cell 21, and the other connecting tab may be connected to the negative terminal of another battery cell 21. The other ends of these two connecting tabs extend out of the same side of the first bracket 10 for connection to other electrical components, such as the circuit assembly 30.

[0080] like Figures 3 to 5 As shown in this embodiment, the first bracket 10 further includes an extension 13 extending toward the cell assembly 20. The extension 13 covers at least a portion of the periphery of the cell assembly 20 and is used to fix it to the housing 200 of the energy storage device. The extension 13 can fix the first bracket 10 to the housing 200 of the energy storage device. Since both the cell assembly 20 and the circuit assembly 30 are connected to the first bracket 10, the entire battery module 100 can be securely installed inside the energy storage device, ensuring a stable installation of the battery module 100. Of course, in other embodiments, the battery module 100 can also be securely installed by fixing the bottom of the cell assembly 20 to the housing 200 of the energy storage device. For example, the battery module 100 can be securely installed by fixing the second bracket 40 to the housing 200.

[0081] For example, the first bracket 10 is provided with extensions 13 on both sides, so that the first bracket 10 can be installed entirely in the housing 200 through the two extensions 13, so as to ensure that the battery module 100 can be installed in the energy storage device in a balanced and stable manner.

[0082] For example, the extension 13 is further provided with a fixing post 131 protruding towards the bottom of the cell assembly 20. The fixing post 131 can be fixedly connected to the bottom of the housing 200. In this way, after the cell assembly 20 is placed at the bottom of the housing 200, the first bracket 10 can press and fix the cell assembly 20 to the bottom of the housing 200, and securely install the entire battery module 100 in the energy storage device. For example, the first bracket 10 is provided with extensions 13 on two opposite sides, and each extension 13 is provided with two fixing posts 131. The fixing posts 131 are provided with fixing holes. Screws pass through the fixing holes and are fastened to the housing 200 to securely install the battery module 100. In this application, the two fixing posts 131 of each extension 13 are respectively connected to the first side shell 201 and the second side shell 202 of the housing 200. In this way, the first bracket 10 can also securely connect the housing 200 of the energy storage device.

[0083] like Figure 1 and Figure 6As shown, in the embodiment of the present application, the energy storage device further comprises a second heat dissipation fan 302, which is installed on the opposite side of the first heat dissipation fan 301, and is fixed in the groove formed by one of the extension parts 13 of the first support 10. The second heat dissipation fan 302 faces the gap between the battery cell assembly 20 and the circuit assembly 30, and can effectively dissipate heat from the entire battery module 100. In addition, the first heat dissipation fan 301 and the second heat dissipation fan 302 can form a convection, one of which takes in air and the other of which discharges air, so as to achieve a better heat dissipation effect and ensure stable and efficient operation of the battery module 100.

[0084] As shown, Figures 3 to 5 In the embodiment of the present application, the battery module 100 further comprises a second support 40, which is fixed on the other side of the battery cell assembly 20 to be clamped on both sides of the battery cell assembly 20 with the first support 10. The first support 10 and the second support 40 can stabilize the plurality of battery cells 21 in the battery cell assembly 20. In the embodiment, the second support 40 is located at the bottom of the battery cell assembly 20, and the first support 10 is located at the top of the battery cell assembly 20. When the battery module 100 is placed in the energy storage device, the second support 40 is placed at the bottom of the housing 200 of the energy storage device, so as to stably install the battery module 100 in the energy storage device.

[0085] For example, the second support 40 is also provided with a plurality of arrayed mounting grooves (not shown), which correspond to the plurality of battery cells 21 one by one. The other end of each battery cell 21 is embedded in the corresponding mounting groove. In this way, the two ends of each battery cell 21 in the battery cell assembly 20 can be stably fixed, so that the entire battery cell assembly 20 is stably installed between the first support 10 and the second support 40.

[0086] As shown, Figures 4 to 6 In the energy storage device of the present application, the battery module 100 is arranged in the housing 200.

[0087] In the energy storage device of the embodiment of the present application, the first support 10 of the battery module 100 can fix both the battery cell assembly 20 and the circuit assembly 30, so that the circuit assembly 30 no longer needs to be provided with an additional support. This simplifies the structure of the battery module 100, simplifies the assembly of the battery module 100, reduces the manufacturing cost, and is conducive to production. At the same time, since the battery cell assembly 20 and the circuit assembly 30 share the first support 10, the space occupied by the additional support can be reduced, so as to reduce the space occupied by the battery module 100. When the battery module 100 is arranged in the housing 200, the cost of the energy storage device can be reduced, the volume of the energy storage device can be simplified, and the energy storage device is convenient to carry.

[0088] As shown, Figure 5 andFigure 6 As shown, in the embodiment of the present application, the shell 200 comprises a first side shell 201 and a second side shell 202 connected together, the first side shell 201 and the second side shell 202 surround to form a mounting cavity, the battery module 100 is mounted in the mounting cavity, and the first support 10 is connected to the first side shell 201 and the second side shell 202 respectively. By connecting the first side shell 201 and the second side shell 202 through the first support 10, the battery module 100 can be stably mounted in the shell 200, and the first side shell 201 and the second side shell 202 can be stably connected, so that the overall structure of the energy storage device is stable and reliable. Since the shell 200 can be divided into the first side shell 201 and the second side shell 202, it is also relatively convenient to install the battery module 100, and the assembly of the battery module 100 can be simplified. In the embodiment, the connection of the first support 10 and the first side shell 201 and the second side shell 202 can refer to the connection mode of the fixed column 131 described above, for example, the two fixed columns 131 and the first side shell 201 and the second side shell 202 are locked by screws.

[0089] In some embodiments, the first support 10 can also be clamped to the first side shell 201 and the second side shell 202, for example, the extension part 13 is provided with two clamping hooks arranged opposite to each other, the first side shell 201 and the second side shell 202 are respectively provided with clamping holes, and the two clamping hooks of the extension part 13 are clamped to the clamping holes of the first side shell 201 and the second side shell 202 respectively, so as to clamp the first side shell 201 and the second side shell 202 after being connected to the first side shell 201 and the second side shell 202.

[0090] In some embodiments, the first support 10 can also be connected with the first side shell 201 and the second side shell 202 in an interference fit, for example, the two fixed columns 131 of the extension part 13 are directly connected with the fixed holes of the first side shell 201 and the second side shell 202 in an interference fit, so as to fix and mount the battery module 100 in the shell 200, and at the same time, the connection of the first side shell 201 and the second side shell 202 is tightened.

[0091] Exemplarily, the first side shell 201 and the second side shell 202 are also locked and connected by screws and / or buckles, so as to further ensure the stable and reliable structure of the shell 200.

[0092] As Figure 6As shown in the embodiment of this application, the housing 200 further includes a bottom shell 203, which is connected to the first side shell 201 and the second side shell 202. The first support 10 is connected to the bottom shell 203. The bottom shell 203 can further stabilize the connection between the first side shell 201 and the second side shell 202, and the bottom shell 203 can also serve as a supporting component for the energy storage device, providing stable support for the entire energy storage device. In this embodiment, the first support 10 is also connected to the bottom shell 203, thus further stabilizing the connection between the housings 200. Of course, in other embodiments, the first support 10 may not be connected to the bottom shell 203.

[0093] For example, when connecting the housing 200 and the first bracket 10, a screw can be passed through the fixing hole of the fixing post 131 and through the first side shell 201 or the second side shell 202 to be tightly connected to the bottom shell 203, thereby enabling the first bracket 10 to be connected to both the first side shell 201 and the second side shell 202, as well as the bottom shell 203.

[0094] like Figure 6 As shown in the embodiments of this application, the energy storage device further includes at least one of the following structures: an electrical connection interface and a charging interface.

[0095] The electrical connection interface is electrically connected to the battery module 100. The electrical connection interface includes at least one of the following: a USB interface, an AC socket, a DC interface, an emergency starter power output interface, and a cigarette lighter socket. Power can be supplied to other electronic devices through the electrical connection interface, and the type of electrical connection interface can vary depending on the specific electronic device.

[0096] The charging interface is electrically connected to the battery module 100 and is located in the housing 200. The charging interface is used to charge the battery module 100. An external power source is connected through the charging interface to charge the battery module 100 so that it can be carried and used by energy storage devices.

[0097] like Figure 6 As shown in the embodiment of this application, the energy storage device also includes an interface circuit board 400, which is provided with the aforementioned electrical connection interface and charging interface. The interface circuit board 400 is located on one side of the battery module 100 and is electrically connected to the circuit assembly 30 so as to charge the battery module 100 or supply power to other electronic devices through the electrical connection interface.

[0098] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the content of this application's specification and drawings under the concept of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A battery module applied to an energy storage device, characterized in that, The battery module comprises: a first support; a battery cell assembly fixed to one side of the first support; a circuit assembly fixed to the other side of the first support opposite to the battery cell assembly; a connecting member provided on the side of the first support opposite to the battery cell assembly, the connecting member being connected to the circuit assembly, and the surface of the circuit assembly and the first support opposite to the battery cell assembly having a spacing.

2. The battery module of claim 1, wherein, The circuit assembly comprises a protection circuit board, and the connecting member comprises a plurality of first connecting columns connected to the protection circuit board.

3. The battery module of claim 1, wherein, The circuit assembly comprises an inverter circuit assembly, and the connecting member comprises a plurality of second connecting columns connected to the inverter circuit assembly.

4. The battery module of claim 3, wherein, The inverter circuit assembly comprises an inverter circuit board and a shielding support connected to the inverter circuit board, the shielding support being located on the side of the inverter circuit board facing the first support, and the plurality of second connecting columns being connected to the shielding support.

5. The battery module of claim 4, wherein, The shielding support is provided with a surrounding plate surrounding at least part of the edge of the inverter circuit board.

6. The battery module of claim 4, wherein, The shielding support is provided with a mounting rack for mounting a first heat dissipation fan to dissipate heat from the inverter circuit board.

7. The battery module of claim 1, wherein, The circuit assembly comprises a protection circuit board and an inverter circuit assembly, the protection circuit board being provided on the side of the inverter circuit assembly facing the first support, and the inverter circuit assembly and the protection circuit board having a spacing therebetween.

8. The battery module of claim 1, wherein, The battery cell assembly comprises a plurality of arrayed battery cells, the first support is provided with a plurality of arrayed mounting holes, the plurality of mounting holes and the plurality of battery cells one-to-one corresponding, and the end of each battery cell is embedded in the corresponding mounting hole.

9. The battery module of claim 1, wherein, The first support is further provided with an extension extending towards the battery cell assembly, the extension covering at least part of the circumferential side of the battery cell assembly, and the extension being used for being fixed to the housing of the energy storage device.

10. The battery module of claim 1, wherein, The second support is further provided, the second support being fixed to the other side of the battery cell assembly to be clamped with the first support on both sides of the battery cell assembly.

11. An energy storage device, characterized by, The battery module comprises a housing and the battery module as claimed in any one of claims 1 to 10. The battery module is provided in the housing.

12. The energy storage device of claim 11, wherein, The housing comprises a first side shell and a second side shell connected to each other, the first side shell and the second side shell surrounding to form a mounting cavity, the battery module being mounted in the mounting cavity, and the first support being connected to the first side shell and the second side shell respectively.

13. The energy storage device of claim 12, wherein, The housing further comprises a bottom shell connected to the first side shell and the second side shell, and the first support being connected to the bottom shell.

14. The energy storage device of claim 11, wherein, The energy storage device further comprises at least one of the following structures: an electrical connection interface electrically connected to the battery module, the electrical connection interface comprising at least one of a USB interface, an AC socket, a DC interface, an emergency starting power output interface, and a cigar lighter socket; a charging interface electrically connected to the battery module, the charging interface being provided on the housing and being used for charging the battery module.

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