Battery module and energy storage system

Abstract

The embodiment of the utility model relates to the technical field of energy storage, and discloses a battery module and an energy storage system.The battery module comprises a shell, a battery and an airflow driving assembly, the shell is provided with an air inlet, a containing groove and an air outlet channel, the air inlet and the air outlet channel both communicate with the containing groove, and the air outlet channel and the air inlet are located at the two ends of the shell correspondingly; the air outlet channel and the air inlet are communicated with the outside; the battery is contained in the containing groove, the battery and the shell jointly define a heat dissipation channel, one end of the heat dissipation channel is communicated with the air inlet, and the other end of the heat dissipation channel is communicated with the air outlet channel; the airflow driving assembly is arranged on one of the air outlet channel and the air inlet, and the airflow driving assembly is used for driving external air to enter the heat dissipation channel from the air inlet and be exhausted to the outside from the air outlet channel. In this way, the heat dissipation efficiency of the battery module can be improved.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and in particular to a battery module and energy storage system. Background Technology

[0002] With the development of new energy technologies, battery modules, as core components of new energy equipment, are crucial to the overall performance of the entire device. A battery module consists of a casing and a battery. The battery is installed inside the casing. During charging and discharging, the battery generates heat. If this heat cannot be dissipated, it will affect the performance of the battery module and may even lead to fire or explosion.

[0003] In related technologies, battery modules typically dissipate heat through the surface of the casing. That is, the battery can transfer heat to the casing, and the casing comes into contact with the outside air, thereby dissipating the heat to the outside.

[0004] During the implementation of the embodiments of this application, the inventors discovered that the heat dissipation efficiency was not high using the above-described method. Utility Model Content

[0005] The main technical problem addressed by the embodiments of this application is to provide a battery module and energy storage system that can improve the heat dissipation efficiency of the battery module.

[0006] To solve the above-mentioned technical problems, one technical solution adopted in this application embodiment is as follows: a battery module is provided, including a housing, a battery, and an airflow driving component. The housing is provided with an air inlet, a receiving groove, and an air outlet channel. The air inlet and the air outlet channel are both connected to the receiving groove. The air outlet channel and the air inlet are located at opposite ends of the housing, and both the air outlet channel and the air inlet are connected to the outside. The battery is housed in the receiving groove, and the battery and the housing together form a heat dissipation channel. One end of the heat dissipation channel is connected to the air inlet, and the other end of the heat dissipation channel is connected to the air outlet channel. The airflow driving component is disposed on one of the air outlet channel and the air inlet. The airflow driving component is used to drive external gas from the air inlet into the heat dissipation channel and exhaust it to the outside from the air outlet channel.

[0007] In some embodiments, the airflow drive assembly includes a fan and a bracket, the fan being mounted on the bracket and the bracket being mounted on a housing, with at least a portion of the fan housed in an air outlet channel.

[0008] In some embodiments, the bracket is provided with inserts on both opposite sides, and the outer shell is provided with two slots. The two slots are located on opposite side walls of the air outlet duct, and one insert is inserted into one slot.

[0009] In some embodiments, the bracket is provided with a receiving slot, the fan is received in the receiving slot, and the fan and the side wall of the receiving slot are spaced apart from each other.

[0010] In some embodiments, the housing includes a top cover, a bottom cover, a first side cover, and a second side cover. The top cover and the bottom cover are opposite to each other, and the first side cover and the second side cover are opposite to each other. The bottom cover and the battery together form a heat dissipation channel. An air inlet is provided on the first side cover, and an air outlet is provided on the second side cover that communicates with the air outlet channel. The air outlet communicates with the outside.

[0011] In some embodiments, there are multiple batteries, which are spaced apart along a first direction so that each pair of adjacent batteries together form a fluid channel. One end of each fluid channel is connected to an air inlet, and the other end of each fluid channel is connected to an air outlet. The first direction is perpendicular to the arrangement direction of the first side cover and the second side cover.

[0012] In some embodiments, the battery module includes an isolation post, at least a portion of which is housed in a fluid channel.

[0013] In some embodiments, the isolation column is provided with a communication groove for allowing gas in the fluid channel to flow from one end of the fluid channel to the other end.

[0014] In some embodiments, the battery module includes a connector, one end of which is fixed to the battery and the other end of which is fixed to the top cover.

[0015] The housing includes a support protrusion, one end of which is disposed on the surface of the bottom cover facing the battery, and the battery abuts against the other end of the support protrusion.

[0016] To solve the above-mentioned technical problems, another technical solution adopted in this application embodiment is to provide an energy storage system, including the above-mentioned battery module.

[0017] The beneficial effects of this application embodiment are as follows: Unlike the prior art, in this application embodiment, by setting an airflow driving component to drive external gas into the heat dissipation channel and exhaust it to the outside through the air outlet channel, the air exchange rate between the inside of the casing and the outside is accelerated, thereby accelerating the heat dissipation speed of the battery. This helps to reduce the impact of heat accumulation on the charging and discharging performance of the battery module and reduces the risk of fire or explosion caused by heat accumulation, thus improving the safety of the battery module. In addition, since the battery and the casing together form a heat dissipation channel, the heat dissipation channel can reduce the resistance of air flow inside the casing, thereby accelerating the air flow speed and further accelerating the heat dissipation speed of the battery. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0019] Figure 1 This is a schematic diagram of the battery module provided in the embodiments of this application from a first-view perspective;

[0020] Figure 2 This is a first exploded structural diagram of the battery module provided in the embodiments of this application;

[0021] Figure 3 This is a second exploded view of the battery module provided in the embodiments of this application;

[0022] Figure 4 This is a schematic diagram of the bottom cover and the supporting protrusion provided in the embodiments of this application;

[0023] Figure 5 This is a schematic diagram of the battery module provided in the embodiments of this application from a second perspective;

[0024] Figure 6 yes Figure 5 A schematic diagram of the structure after being cut along the central cutting line AA;

[0025] Figure 7 This is a partial structural diagram of the battery module provided in the embodiments of this application in a disassembled state;

[0026] Figure 8 This is an exploded structural diagram of the airflow drive component provided in the embodiments of this application;

[0027] Figure 9 This is a schematic diagram of the airflow drive component provided in the embodiments of this application;

[0028] Figure 10 This is a schematic diagram of the battery module provided in the embodiments of this application from a third-person perspective;

[0029] Figure 11 yes Figure 10 A schematic diagram of the structure after being cut along the central section line BB;

[0030] Figure 12 This is a schematic diagram of the battery module provided in the embodiments of this application after the outer casing is hidden;

[0031] Figure 13 This is a schematic diagram of the structure of the isolation column provided in the embodiments of this application;

[0032] Figure 14 This is a schematic diagram of the top cover provided in the embodiments of this application;

[0033] Figure 15 yes Figure 14 An enlarged view of the area shown in section A;

[0034] Figure 16 This is a schematic diagram of the battery module provided in the embodiments of this application when the protective cover is opened;

[0035] Figure 17 This is a schematic diagram of the energy storage system provided in the embodiments of this application;

[0036] Figure 18 This is a schematic diagram of the connector provided in the embodiments of this application;

[0037] Figure 19 yes Figure 18 An enlarged view of the area shown in section B. Detailed Implementation

[0038] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "inner," "outer," "vertical," "horizontal," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0040] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0041] Please see Figures 1 to 6The battery module 100 includes a housing 1, a battery 2, and an airflow drive assembly 3. The housing 1 is provided with an air inlet 151, a receiving groove 11, and an air outlet 12. The air outlet 12 and the air inlet 151 are both connected to the receiving groove 11. The air outlet 12 and the air inlet 151 are located at opposite ends of the housing 1 and are both connected to the outside. The battery 2 is housed in the receiving groove 11 and is fixed to the housing 1. The battery 2 and the housing 1 together form a heat dissipation channel 4. One end of the heat dissipation channel 4 is connected to the air inlet 151, and the other end of the heat dissipation channel 4 is connected to the air outlet 12, so that the air inlet 151, the heat dissipation channel 4, and the air outlet 12 together constitute a convection channel (not labeled). Both ends of the convection channel are connected to the outside, so that outside air can enter the battery module 100 from one end of the convection channel, contact at least a portion of the surface of the battery 2 to remove at least a portion of the heat from the battery 2, and then be discharged to the outside from the other end of the convection channel. The airflow drive component 3 is disposed in one of the air outlet channel 12 and the air inlet 151. When the airflow drive component 3 is working, it can drive external gas from the air inlet 151 into the heat dissipation channel 4 and exhaust it from the air outlet channel 1 to the outside. When the gas flows through the heat dissipation channel 4, the gas contacts the battery 2 and carries away at least part of the heat from the battery 2, thereby achieving heat dissipation of the battery 2. In this embodiment, by setting the airflow drive component 3 to drive external gas into the heat dissipation channel 4 and exhaust it from the air outlet channel 12 to the outside, the air exchange rate between the inside of the casing 1 and the outside is accelerated, which can accelerate the heat dissipation speed of the battery 2. This helps to reduce the impact of heat accumulation on the charging and discharging performance of the battery module 100, and can reduce the risk of fire or explosion caused by heat accumulation in the battery 2, thereby improving the safety of the battery module 100. In addition, since the battery 2 and the casing 1 together form the heat dissipation channel 4, the heat dissipation channel 4 can reduce the resistance of air flow inside the casing 1, thereby accelerating the air flow speed and further accelerating the heat dissipation speed of the battery 2.

[0042] For the aforementioned casing 1, please refer to Figure 2 , Figure 3 and Figure 6The outer casing 1 includes a bottom cover 13, a top cover 14, a first side cover 15, and a second side cover 16. The bottom cover 13 and the top cover 14 are arranged opposite each other along a second direction Y, and the first side cover 15 and the second side cover 16 are arranged opposite each other along a third direction Z. The second direction Y and the third direction Z are perpendicular. The bottom cover 13, the top cover 14, the first side cover 15, and the second side cover 16 together constitute at least a portion of the boundary of the aforementioned receiving groove 11. The battery 2 is spaced apart from the bottom cover 13 so that the bottom cover 13 and the battery 2 together enclose and form the aforementioned heat dissipation channel 4. The aforementioned air outlet channel 12 is provided at one end of the bottom cover 13 near the first side cover 15, and the aforementioned air inlet 151 is provided at the first side cover 15. The second side cover 16 is provided with an air outlet 161. One end of the air outlet 161 is connected to the outside, and the other end of the air outlet 161 is connected to the air outlet channel 12. When the airflow driving component 3 is working, the airflow driving component 3 can drive the outside gas from the air inlet 151 into the heat dissipation channel 4. When the gas passes through the heat dissipation channel 4, it can carry away at least part of the heat of the battery 2, and then it is discharged from the air outlet channel 12 and the air inlet 151 in sequence.

[0043] It is worth noting that, in addition to setting the airflow drive component 3 in the air outlet 12 or the air inlet 151, the airflow drive component 3 can also be set in the air outlet 161, as long as the airflow drive component 3 can drive the outside gas into the housing 1 and discharge it to the outside.

[0044] In some embodiments, please refer to Figure 2 and Figure 3 The outer casing 1 is generally box-shaped. The outer casing 1 also includes a third side cover 17 and a fourth side cover 18. The third side cover 17 and the fourth side cover 18 are opposite each other along the first direction X, and the third side cover 17 and the fourth side cover 18 are respectively located on both sides of the bottom cover 13. The bottom cover 13, the top cover 14, the first side cover 15, the second side cover 16, the third side cover 17 and the fourth side cover 18 together form the aforementioned receiving groove 11, wherein the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0045] In some embodiments, not shown in the figures, in addition to the heat dissipation channel 4 being disposed between the battery 2 and the bottom cover 13, the heat dissipation channel 4 can also be disposed between the battery 2 and the top cover 14 (i.e., the heat dissipation channel 4 is formed by the battery 2 and the top cover 14 together), or between the battery 2 and the third side cover 17 (i.e., the heat dissipation channel 4 is formed by the battery 2 and the third side cover 17 together), or between the battery 2 and the fourth side cover 18 (i.e., the heat dissipation channel 4 is formed by the battery 2 and the fourth side cover 18 together). As long as the gas can contact the outer surface of the battery 2 when it flows through the heat dissipation channel 4, thereby carrying away at least part of the heat of the battery 2, this application does not limit the specific location of the heat dissipation channel 4. In addition, a heat dissipation channel 4 can be provided between the battery 2 and the bottom cover 13, between the battery 2 and the top cover 14, between the battery 2 and the third side cover 17, and between the battery 2 and the fourth side cover 18. One end of each heat dissipation channel 4 is connected to the air inlet 151, and the other end is connected to the air outlet 12. When gas flows through each heat dissipation channel 4, the gas in each heat dissipation channel 4 can contact the surface of the battery 2 and thus carry away at least part of the heat of the battery 2. By setting multiple heat dissipation channels 4, the heat dissipation efficiency of the battery 2 can be improved.

[0046] In some embodiments, please refer to Figure 2 and Figure 4 The outer casing 1 includes a support protrusion 19. One end of the support protrusion 19 is disposed on the surface of the bottom cover 13 facing the battery 2, and the battery 2 abuts against the other end of the support protrusion 19. The support protrusion 19 can support at least part of the weight of the battery 2. In addition, by providing the support protrusion 19 and placing the battery 2 against it, the battery 2 and the bottom cover 13 are spaced apart, thereby allowing the battery 2 and the bottom cover 13 to jointly enclose and form the aforementioned heat dissipation channel 4, which facilitates heat dissipation for the battery 2.

[0047] In some embodiments, there are multiple supporting protrusions 19, which are distributed in a rectangular interval. Each of the multiple supporting protrusions 19 can support the battery 2 and can make the battery 2 and the bottom cover 13 spaced apart from each other, so that the battery 2 and the bottom cover 13 can jointly enclose and form the heat dissipation channel 4, which facilitates heat dissipation of the battery 2.

[0048] In some embodiments, the bottom cover 13 and the support protrusion 19 are integrally formed. It is understood that the support protrusion 19 can also be fixed to the bottom cover 13 by any of the following methods: adhesive, screw, snap-fit, and riveting, and this application does not limit this.

[0049] For the airflow drive component 3 mentioned above, please refer to... Figure 2 , Figure 6 and Figure 7The airflow drive assembly 3 includes a fan 31 and a bracket 32. The fan 31 is mounted on the bracket 32, and the bracket 32 ​​is mounted on the bottom cover 13. At least a portion of the fan 31 is housed in the air outlet 12. The fan 31 drives external air to enter the housing 1 from the air inlet 151, and then passes through the heat dissipation channel 4 and the air outlet 12 before being discharged to the outside from the air outlet 161. By mounting the fan 31 on the bracket 32 ​​and the bracket 32 ​​on the bottom cover 13, the installation of the fan 31 can be facilitated.

[0050] In some embodiments, please refer to Figure 8 The bracket 32 ​​is provided with a receiving groove 321, in which the fan 31 is received. Along the third direction Z, the depth of the receiving groove 321 is greater than the thickness of the fan 31, so that when the fan 31 is installed on the bracket 32, the fan 31 is completely received in the receiving groove 321, which facilitates the bracket 32 ​​to protect the fan 31.

[0051] In some embodiments, please refer to Figure 9 In the first direction X, the distance between the fan 31 and the two side walls of the receiving groove 321 is 'a', and 'a' > 0 mm. In the second direction Y, the distance between the fan 31 and the two side walls of the receiving groove 321 is 'b', and 'b' > 0 mm. That is, in both the first direction X and the second direction Y, the fan 31 and the side walls of the receiving groove 321 are spaced apart. With this arrangement, when the battery module 100 is impacted during drops or transportation vibrations, the outer casing 1 is prone to deformation. Because a certain distance is maintained between the fan 31 and the side walls of the receiving groove 321, this distance can form a buffer, reducing the risk of the deformation stress of the outer casing 1 being directly transmitted to the fan 31, thereby reducing the impact on the fan 31 and protecting it.

[0052] In some embodiments, please refer to Figure 8 One of the bracket 32 ​​and the fan 31 is provided with a positioning protrusion 323 and the other is provided with a positioning groove 311. When the fan 31 is installed on the bracket 32, at least a portion of the positioning protrusion 323 is inserted into the positioning groove 311, thereby realizing the positioning between the fan 31 and the bracket 32, which is beneficial to improving the installation accuracy between the fan 31 and the bracket 32.

[0053] In some embodiments, the positioning protrusion 323 is disposed on the bracket 32, and one end of the positioning protrusion 323 is connected to the bottom of the receiving groove 321, and the positioning groove 311 is disposed on the fan 31.

[0054] In some embodiments, the airflow drive assembly 3 further includes a screw connector 33, and the bracket 32 ​​is provided with a screw groove 324. The screw connector 33 passes through the fan 31 and is screwed into the screw groove 324, thereby realizing the installation and fixation between the fan 31 and the bracket 32.

[0055] In some embodiments, please refer to Figure 7 and Figure 8 The bracket 32 ​​has inserts 322 on both sides, and the bottom cover 13 has two slots 131. The two slots 131 are located on opposite side walls of the air outlet duct 12, that is, the two slots 131 are distributed opposite each other along the first direction X. The insert 322 on one side of the bracket 32 ​​is inserted into one slot 131, and the insert 322 on the other side of the bracket 32 ​​is inserted into the other slot 131. After the insert 322 is inserted into the slot 131, please combine... Figure 2 Then, the top cover 14 and the bottom cover 13 are installed and fixed, thereby restricting the bracket 32 ​​from disengaging from the air outlet duct 12 in the second direction Y, thus achieving the fixation of the bracket 32. In this embodiment, the insert 322 is inserted into the slot 131, and the top cover 14 restricts the insert 322 from disengaging from the slot 131, thereby achieving the fixation of the bracket 32. When assembling the airflow drive assembly 3, it is only necessary to insert the inserts 322 on both sides of the bracket 32 ​​into the two slots 131 respectively, and then install and fix the top cover 14 and the bottom cover 13. The installation process of the bracket 32 ​​is convenient and simple.

[0056] In some embodiments, please refer to Figure 2 , Figure 11 and Figure 12 The battery module 100 has multiple batteries 2, which are electrically connected to each other and housed in a receiving slot 11. The batteries 2 are spaced apart along the first direction X, so that each pair of adjacent batteries 2 together encloses a fluid channel 5. One end of the fluid channel 5 is connected to an air inlet 151, and the other end is connected to an air outlet 12. In this embodiment, by using multiple batteries 2, the capacity of the battery module 100 can be increased. By forming a fluid channel 5 with each pair of adjacent batteries 2 together, when the fan 31 is working, at least some of the gas entering the housing 1 from the air inlet 151 can flow through the fluid channel 5, thereby contacting the surface of the battery 2 and carrying away at least some of the heat from the battery 2. Then, the gas is discharged sequentially from the air outlet 12 and the air outlet 161, thereby improving the heat dissipation efficiency of the battery 2.

[0057] It is worth noting that when there are multiple batteries 2, each battery 2 and the bottom cover 13 together form a heat dissipation channel 4. One end of each heat dissipation channel 4 is connected to the air inlet 151, and the other end of each heat dissipation channel 4 is connected to the air outlet 12. When the fan 31 is working, the gas entering the inside of the outer casing 1 from the air inlet 151 can flow through each heat dissipation channel 4, thereby contacting the surface of the corresponding battery 2 and taking away at least part of the heat of the battery 2. Then all the gas is discharged from the air outlet 12 and the air outlet 161 in sequence, thereby achieving heat dissipation for each battery 2.

[0058] In some embodiments, the battery module 100 further includes an isolation post 6, at least a portion of which is housed in the fluid channel 5, so that the isolation post 6 can separate two adjacent batteries 2 from each other, reducing the risk of damage and short circuit caused by collision between two adjacent batteries 2.

[0059] In some embodiments, a plurality of isolation pillars 6 are provided between each pair of adjacent batteries 2, and the plurality of isolation pillars 6 are spaced apart along the extension direction of the fluid channel 5, thereby further reducing the risk of adjacent batteries 2 colliding with each other.

[0060] In some embodiments, please refer to Figure 12 and Figure 13 The isolation column 6 is provided with a connecting groove 61, which is used to allow airflow in the fluid channel 5 to flow from one end of the fluid channel 5 to the other end. This reduces the airflow resistance in the fluid channel 5 while ensuring that the isolation column 6 can isolate two adjacent batteries 2, thereby reducing the impact on the heat dissipation efficiency of the battery 2.

[0061] In some embodiments, please refer to Figure 2 The battery module 100 includes a connector 7, which is approximately L-shaped. One end of the connector 7 is fixed to the battery 2, and the other end is fixed to the top cover 14. The battery 2 is fixed to the top cover 14 through the connector 7, and the top cover 14 supports the battery 2. When the battery module 100 falls from the top (i.e., the top cover 14 falls downwards), the connector 7 can support the top cover 14 and the battery 2, reducing the risk of damage to the top cover 14 when it falls.

[0062] In some embodiments, when there are multiple batteries 2, there are multiple connectors 7. Each battery 2 is connected to at least one connector 7, and the end of each connector 7 away from the battery 2 is fixed to the top cover 14. By providing multiple connectors 7, the stability of the fixation between the top cover 14 and the battery 2 can be improved, thereby reducing the risk of damage when the top cover 14 falls.

[0063] In some embodiments, please refer to Figure 2 , Figure 14 and Figure 15 The top cover 14 has multiple mounting grooves 141 on its surface facing the bottom cover 13. A connector 7 corresponds to one mounting groove 141, and at least part of the end of the connector 7 away from the battery 2 is received in one mounting groove 141. A support plane 142 is provided on the side of the top cover 14 facing the bottom cover 13, and the connector 7 abuts against the support plane. Each connector 7 is fixed to the bottom cover 13 by screws 9. In this embodiment, by providing the support plane 142, the contact area between the connector 7 and the top cover 14 can be increased, thereby improving the stability of the support between the connector 7 and the top cover 14.

[0064] In some embodiments, please refer to Figure 2 The battery module 100 also includes a power board 8, which is housed in a receiving slot 11. Multiple batteries 2 are electrically connected to the power board 8. The power board 8 can be used to control the input and output power, current, voltage, etc. of the battery module 100.

[0065] In some embodiments, the top cover 14 is provided with a handle 143 for a user to grip in order to facilitate the handling of the battery module 100.

[0066] In some embodiments, please refer to Figure 16 The outer surface of the first side cover 15 is provided with two plug-in interfaces 152. Both plug-in interfaces 152 are electrically connected to the power board 8. The two plug-in interfaces 152 are used to electrically connect to external devices or external power supplies, thereby supplying power to external devices or charging the battery module 100 through an external power supply. It can be understood that, in addition to being provided on the first side cover 15, the two plug-in interfaces 152 can also be provided on any one of the second side cover 16, the third side cover 17, and the fourth side cover 18.

[0067] In some embodiments, the first side cover 15 is provided with two protective covers 153, which correspond one-to-one with two plug-in interfaces 152. One protective cover 153 can be removed to cover one plug-in interface 152, thereby reducing the entry of external dust, water, etc. into the plug-in interface 152 and causing contamination. The protective cover 153 can also prevent the metal conductive parts in the plug-in interface 152 from being exposed to the outside for a long time, causing oxidation of the metal surface plating, thereby reducing the risk of poor contact with external devices or external power supplies.

[0068] In this embodiment, by setting the airflow driving component 3 to drive external gas into the heat dissipation channel 4 and exhaust it to the outside through the air outlet channel 12, the air exchange rate between the inside of the casing 1 and the outside can be accelerated, thereby accelerating the heat dissipation speed of the battery 2. This helps to reduce the impact of heat accumulation on the charging and discharging performance of the battery module 100, and can reduce the risk of fire or explosion caused by heat accumulation in the battery 2, thereby improving the safety of the battery module 100. In addition, since the battery 2 and the casing 1 together form the heat dissipation channel 4, the heat dissipation channel 4 can reduce the resistance of air flow inside the casing 1, thereby accelerating the air flow speed and further accelerating the heat dissipation speed of the battery 2.

[0069] This application also provides 1000 embodiments of energy storage systems; please refer to [link / reference]. Figure 17 The energy storage system 1000 includes the battery module 100 described above. For the specific structure and function of the battery module 100, please refer to the above embodiments, which will not be repeated here.

[0070] In some embodiments, the energy storage system 1000 includes multiple battery modules 100 and multiple connectors 200. One end of the connector 200 is used to connect to one of the plug-in interfaces 152 of a battery module 100, and the other end of the connector 200 is used to connect to one of the plug-in interfaces 152 of another battery module 100. By connecting multiple battery modules 100 in series / parallel / mixed connection through multiple connectors 200, the capacity of multiple battery modules 100 can be expanded by combining multiple battery modules 100, thereby increasing the capacity of the energy storage system 1000 to meet the user's electricity demand.

[0071] In some embodiments, please refer to Figure 18 and Figure 19 The connector 200 is provided with a hook 2001, and the battery module 100 is provided with a snap-fit ​​part 1521 at the plug-in interface 152. When one end of the connector 200 is plugged into the plug-in interface 152, the hook 2001 snaps into the snap-fit ​​part 1521, thereby preventing the connector 200 from disengaging from the plug-in interface 152, which helps to improve the stability of the connection between the connector 200 and the battery module 100.

[0072] In some embodiments, the connector 200 is provided with a button 2002, which is used to control the latch 2001. When the button 2002 is pressed, the button 2002 can drive the latch 2001 to move to cancel the latch between the latch 2001 and the latching part 1521, thereby allowing the connector 200 to be pulled out from the plug-in interface 152.

[0073] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A battery module, characterized in that, include: The outer casing is provided with an air inlet, a receiving slot, and an air outlet channel. The air inlet and the air outlet channel are both connected to the receiving slot. The air outlet channel and the air inlet are located at opposite ends of the outer casing. Both the air outlet channel and the air inlet are connected to the outside. A battery is housed in the receiving slot, and the battery and the outer casing together form a heat dissipation channel. One end of the heat dissipation channel is connected to the air inlet, and the other end of the heat dissipation channel is connected to the air outlet. An airflow driving component is disposed in one of the air outlet channel and the air inlet. The airflow driving component is used to drive external gas from the air inlet into the heat dissipation channel and from the air outlet channel to the outside.

2. The battery module according to claim 1, characterized in that, The airflow drive assembly includes a fan and a bracket, the fan being mounted on the bracket, the bracket being mounted on the housing, and at least a portion of the fan being housed in the air outlet channel.

3. The battery module according to claim 2, characterized in that, The bracket has inserts on both sides, and the outer shell has two slots. The two slots are located on the two opposite side walls of the air outlet channel, and one insert is inserted into one slot.

4. The battery module according to any one of claims 1-3, characterized in that, The outer casing includes a top cover, a bottom cover, a first side cover, and a second side cover. The top cover and the bottom cover are opposite to each other, and the first side cover and the second side cover are opposite to each other. The bottom cover and the battery together form the heat dissipation channel. The air inlet is provided on the first side cover, and the second side cover is provided with an air outlet that communicates with the air outlet channel. The air outlet communicates with the outside.

5. The battery module according to claim 4, characterized in that, The number of batteries is multiple, and the multiple batteries are spaced apart along a first direction so that each pair of adjacent batteries together form a fluid channel. One end of each fluid channel is connected to the air inlet, and the other end of each fluid channel is connected to the air outlet. The first direction is perpendicular to the arrangement direction of the first side cover and the second side cover.

6. The battery module according to claim 5, characterized in that, The battery module includes an isolation pillar, at least a portion of which is housed within the fluid channel.

7. The battery module according to claim 6, characterized in that, The isolation column is provided with a connecting groove, which is used to allow gas in the fluid channel to flow from one end of the fluid channel to the other end.

8. The battery module according to claim 5, characterized in that, The battery module includes a connector, one end of which is fixed to the battery and the other end of which is fixed to the top cover.

9. The battery module according to claim 4, characterized in that, The housing includes a support protrusion, one end of which is disposed on the surface of the bottom cover facing the battery, and the battery abuts against the other end of the support protrusion.

10. An energy storage system, characterized in that, It includes multiple connectors and multiple battery modules as described in any one of claims 1-9, wherein the multiple battery modules are electrically connected to each other through the multiple connectors.

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