Energy storage battery

Abstract

The utility model relates to an energy storage battery which comprises a shell, an energy storage device and a heat dissipation device, the shell is provided with an air outlet area and a plurality of air inlet areas. The energy storage device comprises at least one battery pack, the battery pack comprises a plurality of battery cells arranged in the shell, a heat dissipation interval is arranged between every two adjacent battery cells, and each heat dissipation interval is independently aligned with one air inlet area; the heat dissipation device comprises a collection channel and a plurality of middle air guide pipes, the collection channel is located in the shell, the middle air guide pipes are arranged in the heat dissipation intervals in a one-to-one correspondence mode, all the middle air guide pipes abut against the battery cells on the two sides, all the middle air guide pipes communicate with the collection channel, the collection channel communicates with the air outlet area, and the air outlet area is used for discharging airflow. The air flow for heat dissipation can be uniformly distributed to the arrangement position of each battery cell, and the air flow after heat exchange is collected and discharged, so that the flow direction of the air flow is stable, the heat dissipation uniformity of the product is improved, the charge and discharge performance of the energy storage battery is ensured, and the durability of the energy storage battery is improved.

Description

Technical Field

[0001] The utility model relates to the field of batteries, in particular to energy storage batteries. Background Art

[0002] Energy storage batteries are commonly used energy storage products in daily production and life. Since energy storage batteries generate a lot of heat during operation, and the heat will reduce the performance and use of energy storage batteries, various heat dissipation elements or heat dissipation devices are provided on energy storage batteries in related technologies, but their heat dissipation effect is still insufficient:

[0003] For example, the airflow used for heat dissipation flows too chaotically inside the battery and lacks orderly guidance, resulting in uneven heat dissipation, reduced temperature consistency among the battery cells inside the battery, and excessive temperature differences among the battery cells in the energy storage battery, which reduces the overall performance of each energy storage battery. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an energy storage battery, which can solve the problem of uneven heat dissipation inside the energy storage battery.

[0005] The utility model provides an energy storage battery, which comprises a shell, an energy storage device and a heat dissipation device;

[0006] The shell is provided with an air outlet area and a plurality of air inlet areas;

[0007] The energy storage device includes at least one battery pack, the battery pack includes a plurality of battery cells arranged in the housing, a heat dissipation gap is arranged between two adjacent battery cells, and each of the heat dissipation gaps is individually aligned with one of the air inlet areas;

[0008] The heat dissipation device includes a collecting channel and a plurality of intermediate air ducts, the collecting channel is located in the shell, and the intermediate air ducts are arranged in a one-to-one correspondence in each heat dissipation interval, and each intermediate air duct is respectively abutted against the battery cells on both sides, and each intermediate air duct is connected to the collecting channel, and the collecting channel is connected to the air outlet area, and the air outlet area is used for air discharge.

[0009] Preferably, the battery pack is provided with a first end and a second end along the arrangement direction of each of the battery cells, the distance from the first end to the air outlet area is greater than the distance from the second end to the air outlet area, and the heat dissipation gap is provided on both sides of the battery cell on the first end.

[0010] Preferably, a plurality of splitter plates are arranged in the intermediate air duct, each of the splitter plates defines a plurality of intermediate air guiding channels in the intermediate air duct, and each of the intermediate air guiding channels is respectively connected to the air inlet area and the collecting channel; and / or

[0011] The middle air guide pipe is cylindrical.

[0012] Preferably, the energy storage device comprises two battery packs, the two battery packs are arranged side by side, and an overcurrent interval is provided between the two battery packs;

[0013] The heat dissipation device also includes a first wind shield and a second wind shield, the first wind shield is arranged above the flow interval, and the second wind shield is arranged in the flow interval at a position away from the air outlet area, and the first wind shield, the second wind shield, the inner wall of the flow interval and the inner wall of the shell together form the collecting channel.

[0014] Preferably, the battery core comprises a top wall, a bottom wall and a peripheral side wall arranged between the top wall and the bottom wall, the peripheral side wall comprises two wide surfaces and two narrow surfaces, and each of the heat dissipation intervals is defined by the wide surfaces.

[0015] Preferably, the heat dissipation device further comprises a conduit and a fan, one end of the conduit is connected to the collecting channel, the other end of the conduit is connected to the air outlet area, and the fan is used to drive the air flow along the conduit to flow to the air outlet area;

[0016] Wherein, the fan is arranged on the shell or on the manifold.

[0017] Preferably, each of the air inlet areas is provided with at least one air inlet hole, and the number of the air inlet holes in each of the air inlet areas gradually decreases in a direction approaching the fan; and / or

[0018] A plurality of air inlet holes are provided in each of the air inlet areas, and the width of the air inlet holes in each of the air inlet areas gradually decreases in a direction approaching the fan; and / or

[0019] A plurality of air inlet holes are provided in each of the air inlet areas, and the length of the air inlet holes in each of the air inlet areas gradually decreases in a direction approaching the fan.

[0020] Preferably, the battery pack further comprises a shielding member, which is disposed above each of the battery cells and shields each of the heat dissipation intervals.

[0021] Preferably, the battery pack further comprises a frame and at least one steel belt, each of the battery cells is arranged on the frame, and the steel belt is wound around each of the battery cells and the frame.

[0022] Preferably, the energy storage battery further comprises a back cover arranged on the shell, the back cover shields the air outlet area, a through hole is opened on the back cover, and the through hole is aligned with the air outlet area.

[0023] The implementation of this utility model has the following beneficial effects:

[0024] The utility model relates to an energy storage battery. In the energy storage battery, a heat dissipation interval is arranged between two adjacent battery cells in each battery pack, an intermediate air duct is arranged in each heat dissipation interval, and an air inlet area corresponding to each heat dissipation interval is opened on a shell, so that airflow can be introduced into each intermediate air duct through each air inlet area, so that both opposite sides of each battery cell have stable airflow flowing through for heat dissipation; furthermore, through the arrangement of a collecting channel, the airflows flowing out of each intermediate air duct are collected and then flow to the air outlet area for discharge;

[0025] The airflow for heat dissipation is evenly distributed to the setting position of each battery cell since it enters the shell. At the same time, the airflow after heat exchange is collected and discharged, so that the flow direction of the airflow is stable and orderly. In this way, the uniformity of heat dissipation of each battery cell is improved, the charging and discharging performance of the energy storage battery is guaranteed, and the durability of the energy storage battery is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0027] Figure 1 It is a schematic diagram of the structure of the energy storage battery in some embodiments of the utility model;

[0028] Figure 2 is a schematic structural diagram of an energy storage battery from another angle in some embodiments of the utility model;

[0029] Figure 3 is an exploded view of an energy storage battery in some embodiments of the utility model;

[0030] Figure 4 yes Figure 3 A partial structural schematic diagram of the energy storage battery shown;

[0031] Figure 5 yes Figure 3 A cross-sectional view of a portion of the structure of the energy storage battery shown;

[0032] Figure 6 yes Figure 4 An exploded view of the energy storage battery shown;

[0033] Figure 7 yes Figure 6 A schematic diagram of the partial structure of the energy storage battery shown;

[0034] Figure 8 It is a schematic structural diagram of the housing of the energy storage battery in some embodiments of the utility model.

[0035] In the figure: 10, energy storage battery;

[0036] 1. Shell; 11. Air outlet area; 12. Air inlet area; 121. Air inlet hole;

[0037] 2. Energy storage device; 21. Battery pack; 21a. First end; 21b. Second end; 211. Battery cell; 2111. Top wall; 2113. Peripheral side wall; 2114. Wide surface; 2115. Narrow surface; 212. Heat dissipation interval; 213. Shielding member; 214. Frame; 215. Steel belt; 22. Current overflow interval;

[0038] 3. heat dissipation device; 31. collecting channel; 32. middle air guide pipe; 321. splitter plate; 322. middle air guide channel; 33. first wind shield; 34. second wind shield; 35. collecting pipe; 36. fan;

[0039] Rear cover 4; through hole 41. DETAILED DESCRIPTION

[0040] The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0041] It should be understood that although the terms "first", "second", "third", etc. may be used to describe various information in the present invention, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0042] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0043] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0044] Figure 1 and Figure 2 The energy storage battery 10 in some embodiments of the present invention is shown, and the energy storage battery 10 is used to store electrical energy. Figure 1 and Figure 2 As shown, the energy storage battery 10 includes a housing 1, an energy storage device 2 and a heat dissipation device 3. It can be understood that the housing 1 plays a role in protecting and installing other devices. The energy storage device 2 is used for charging and discharging. The heat dissipation device 3 is used to dissipate heat inside the housing 1.

[0045] like Figures 1 to 3 As shown, the housing 1 is provided with an air outlet area 11 and a plurality of air inlet areas 12. It can be understood that the air outlet area 11 is used for discharging the airflow in the housing 1. The air inlet area 12 is used for supplying the airflow into the housing 1. The number of the air inlet areas 12 can be flexibly set, depending on the number of positions for the airflow to flow into the housing 1 as needed. Each air inlet area 12 can be used for the airflow to flow into.

[0046] like Figures 3 to 6 As shown, the energy storage device 2 includes at least one battery pack 21 , and the battery pack 21 includes a plurality of battery cells 211 disposed in the housing 1 , a heat dissipation gap 212 is disposed between two adjacent battery cells 211 , and each heat dissipation gap 212 is individually aligned with an air inlet area 12 .

[0047] It can be understood that the number of battery packs 21 can be configured as one, two, three, four, five, six or more than six, and the number of battery cells 211 in each battery pack 21 can be flexibly set. The width and height of the heat dissipation interval 212 can be flexibly set, and the width, height and related dimensions of each heat dissipation interval 212 can be configured to be the same or different. Each heat dissipation interval 212 corresponds to each air inlet area 12 one by one, and the number of air inlet areas 12 is equal to the number of heat dissipation intervals 212, so that the air intake of each air inlet area 12 is specifically supplied to a heat dissipation interval 212, so that each heat dissipation interval 212 has a separate airflow for heat dissipation, thereby improving the uniformity of heat dissipation.

[0048] It should be noted that each heat dissipation interval 212 is aligned with an air inlet area 12, so that the airflow will only flow along one heat dissipation interval after entering through the air inlet area 12, avoiding mutual interference between airflows entering from different air inlet areas 12, and providing effective flow guidance for the airflow. Each battery cell 211 in each battery pack 21 is configured to be aligned one by one along a straight line.

[0049] like Figures 5 to 7 As shown, the heat dissipation device 3 includes a collecting channel 31 and a plurality of intermediate air ducts 32. The collecting channel 31 is located in the shell 1. The intermediate air ducts 32 are arranged one by one in each heat dissipation interval 212. The intermediate air ducts 32 are respectively abutted against the battery cells 211 on both sides. The intermediate air ducts 32 are connected to the collecting channel 31. The collecting channel 31 is connected to the air outlet area 11, and the air outlet area 11 is used for air discharge.

[0050] like Figures 3 to 7 As shown, each intermediate air duct 32 is used to receive the airflow introduced from each air inlet area 12, so that the airflow flows into the collecting channel 31 along each intermediate air duct 32, and then the collecting channel 31 guides the airflow to the air outlet area 11 for discharge.

[0051] It is understandable that the collecting channel 31 can be configured to be defined by a common structure such as a pipe in the related art, or can be configured to be defined by different components of the energy storage battery 10. The number of the intermediate air ducts 32 is configured to be equal to the number of the heat dissipation intervals 212, and each heat dissipation interval 212 is correspondingly provided with an intermediate air duct 32.

[0052] In actual application, the airflow outside the shell 1 is introduced through each air inlet area 12, and the airflow will enter each heat dissipation interval 212 through each air inlet area 12, that is, enter one end of each intermediate air duct 32, and then the airflow flows along the intermediate air duct 32, and the airflow is discharged from the other end of the intermediate air duct 32 into the collecting channel 31, and then the airflow flows along the collecting channel 31 to the air outlet area 11, and finally the airflow will be discharged to the outside of the shell 1 through the air outlet area 11 to achieve the purpose of heat dissipation.

[0053] In the above process, because each intermediate air duct 32 is against the battery cell 211, each battery cell 211 will exchange heat with the intermediate air duct 32, and the air flow flowing in each intermediate air duct 32 will exchange heat with the intermediate air duct 32, thereby achieving the purpose of reducing the heat of each battery cell 211, preventing heat from accumulating between two adjacent battery cells 211, and improving the uniform heat dissipation effect.

[0054] In this embodiment, on the one hand, through the provision of multiple air inlet areas 12, the airflow is guided separately and evenly to the intermediate air ducts 32 in each heat dissipation interval 212; on the other hand, through the provision of the intermediate air ducts 32, the flow direction and flow trajectory of the airflow are limited, thereby preventing the airflow from being too turbulent in the heat dissipation interval 212; further, through the provision of the collecting channel 31, the airflow discharged through the various intermediate air ducts 32 is collected, and the collected airflow is discharged in the same direction to the air outlet area 11, thereby avoiding the problem of flow turbulence in the airflow after heat exchange, so that the airflow with higher temperature can be discharged quickly and concentratedly, thereby preventing the airflow after heat exchange from flowing to other positions and causing heat accumulation.

[0055] The airflow can be formed by adding a rotating fan to the housing to drive the gas to flow. The fan in this embodiment is arranged according to the prior art.

[0056] like Figure 6 and Figure 7 As shown, in some embodiments of the energy storage battery 10, the battery pack 21 is provided with a first end 21a and a second end 21b along the arrangement direction of each battery cell 211, the distance from the first end 21a to the air outlet area 11 is greater than the distance from the second end 21b to the air outlet area 11, and heat dissipation gaps 212 are provided on both sides of the battery cell 211 on the first end 21a.

[0057] It should be noted that, compared with the second end 21b, since the first end 21a is farther away from the air outlet area 11, the gas fluidity at the first end 21a is lower than that at the second end 21b, so the heat dissipation effect of the second end 21b is better than that of the first end 21a.

[0058] Through the content of this embodiment, the battery cells 211 located at the edge of the battery pack 21 can still be effectively cooled. In particular, in the embodiment where the fan is set in the air outlet area 11, the battery cells 211 far away from the air outlet area 11 are also far away from the fan's setting position. Therefore, when the heat dissipation airflow flows at the setting position of the battery cells 211 far away from the air outlet area 11, the flow rate will be lower than the airflow at the setting position of the battery cells 211 closer to the air outlet area 11. Therefore, heat dissipation intervals 212 are specifically set on both sides of the battery cells 211 far away from the air outlet area 11, that is, the battery cells 211 can be cooled from both sides through two intermediate air ducts 32. In this way, the heat of the battery cells 211 at the edge of the battery pack 21 is avoided to be too high, and the heat dissipation uniformity of each battery cell 211 is further improved.

[0059] like Figure 4 and Figure 7As shown, in some embodiments of the energy storage battery 10, a plurality of diverter plates 321 are provided in the intermediate air duct 32, and each diverter plate 321 defines a plurality of intermediate air guide channels 322 in the intermediate air duct 32, and each intermediate air guide channel 322 is respectively connected to the air inlet area 12 and the collecting channel 31.

[0060] It can be understood that the diverter plate 321 is used to divert the airflow flowing through the middle air duct 32, so that the airflow can flow in an orderly manner in the middle air duct 32, preventing the airflow for heat dissipation from flowing turbulently in the middle air duct 32, thereby further improving the uniformity of heat dissipation.

[0061] like Figure 4 and Figure 7 As shown, in some embodiments of the energy storage battery 10, the middle air duct 32 is cylindrical.

[0062] It can be understood that the cylindrical shape allows airflow to flow in from one end of the middle air duct 32 and out from the other end. Further, the middle air duct 32 can be configured as a flat cylinder, and the flat cylinder structure allows the outer wall of the middle air duct 32 to fit the surface of the battery cell 211 as much as possible, further improving the heat dissipation uniformity.

[0063] like Figures 3 to 6 As shown, in some embodiments of the energy storage battery 10, the energy storage device 2 includes two battery groups 21, the two battery groups 21 are arranged side by side, and an overcurrent interval 22 is arranged between the two battery groups 21; the heat dissipation device 3 also includes a first wind shield 33 and a second wind shield 34, the first wind shield is arranged above the overcurrent interval 22, and the second wind shield 34 is arranged in the overcurrent interval 22 at a position away from the air outlet area 11, and the first wind shield 33, the second wind shield 34, the inner wall of the overcurrent interval 22 and the inner wall of the shell 1 are together surrounded to form a collecting channel 31.

[0064] It can be understood that the inner wall surface of the housing 1, the first wind shield 33 and the second wind shield 34 limit the airflow from three different directions, so that the flow interval 22 is only open on one side toward the air outlet area 11. This prevents the airflow after heat exchange from flowing to other positions, ensuring that the airflow with a higher temperature is discharged quickly and preferentially.

[0065] During the actual application of the energy storage battery 10, the airflow after heat exchange is discharged from the middle air duct 32 and flows between the two battery groups 21, that is, into the flow gap 22; then, the airflow can only flow along the flow gap 22 to the air outlet area 11 and be discharged.

[0066] In some embodiments, the first wind shield 33 and the second wind shield 34 can be configured as wind shield cotton. In other embodiments, the first wind shield 33 and the second wind shield 34 can be configured as metal parts. In other embodiments, the first wind shield 33 and the second wind shield 34 can be configured as plastic parts. In addition to the aforementioned embodiments, the first wind shield 33 and the second wind shield 34 can also be configured to be made of various materials in the prior art, as long as the airflow can be effectively blocked and limited at the setting position to avoid turbulence in the airflow direction.

[0067] In some embodiments, the first wind shield 33 can be configured to be completely retracted in the flow interval 22, or partially retracted in the flow interval 22, or arranged outside the flow interval 22 to block and limit the airflow only from the edge of the flow interval 22. Similarly, the second wind shield 34 can be configured to be completely or partially retracted in the flow interval 22, or arranged outside the flow interval 22 to block and limit the airflow only from the edge of the flow interval 22.

[0068] like Figure 7 As shown, in some embodiments of the energy storage battery 10, the battery cell 211 includes a top wall 2111, a bottom wall and a peripheral side wall 2113 arranged between the top wall 2111 and the bottom wall, the peripheral side wall 2113 includes two wide surfaces 2114 and two narrow surfaces 2115, and each heat dissipation interval 212 is defined by the wide surface 2114.

[0069] It can be understood that the peripheral side wall 2113 is cylindrical, and the top wall 2111 and the bottom wall respectively block the two ends of the cylindrical peripheral side wall 2113. The area of ​​the wide surface 2114 is greater than the area of ​​the narrow surface 2115.

[0070] Since the heat dissipation intervals 212 are defined by the wide surfaces 2114, the middle air duct 32 will abut against the wide surfaces 2114 and perform heat exchange. In this way, the heat of the battery cell 211 will be exchanged through the wide surfaces with larger areas, which effectively improves the heat dissipation efficiency, greatly avoids the problem of excessive temperature of the battery cell 211, and ensures the service life of the product.

[0071] like Figure 3 and Figure 4 As shown, in some embodiments of the energy storage battery 10, the heat dissipation device 3 also includes a collector 35 and a fan 36, one end of the collector 35 is connected to the collecting channel 31, and the other end of the collector 35 is connected to the air outlet area 11, and the fan 36 is used to drive the air flow along the collector 35 to flow to the air outlet area 11; wherein the fan 36 is arranged on the shell 1 or on the collector 35.

[0072] It can be understood that the conduit 35 is used to centrally guide the airflow discharged through the converging channel 31, so that the airflow after heat exchange can flow directly to the air outlet area 11 for discharge, further preventing the turbulent flow of the airflow and more effectively improving the heat dissipation effect. The fan 36 is a prior art, and the fan 36 can be configured to include a motor and a fan blade driven and connected to the motor. The motor drives the fan blade to rotate to drive the gas to flow to form an airflow.

[0073] It should be noted that, in this embodiment, the fan 36 can be disposed on the housing 1, or the fan 36 can be disposed on the manifold 35. The selection is made depending on the application scenario and design requirements.

[0074] like Figure 8 As shown, each air inlet area 12 can be set in at least the following embodiments. Of course, one of the following embodiments can be used alone, or several of the following embodiments can be used simultaneously:

[0075] In the first embodiment, at least one air inlet hole 121 is defined in each air inlet area 12 , and the number of the air inlet holes 121 in each air inlet area 12 gradually decreases in a direction approaching the fan 36 .

[0076] It can be understood that the closer the air flow is to the setting position of the fan 36, the faster the air flow velocity is, and the greater the number of air inlet holes 121, the larger the cross-sectional area available for air flow to flow in. Therefore, based on the fact that flow rate is equal to the product of flow velocity and flow cross section, the content of this type of embodiment can be adopted to make the flow rate of the air flow flowing in through each air inlet area 12 as equal as possible, and the flow rate being as uniform as possible will make the heat dissipation effect as uniform as possible.

[0077] In the second embodiment, each air inlet area 12 is provided with a plurality of air inlet holes 121 , and the width W of the air inlet holes 121 in each air inlet area 12 gradually decreases in a direction approaching the fan 36 .

[0078] It can be understood that the closer the air flow is to the setting position of the fan 36, the faster the air flow velocity is, and the larger the width W of the air inlet hole 121 is, the larger the cross-sectional area available for air flow to flow in. Therefore, based on the fact that flow rate is equal to the product of flow velocity and flow cross section, the content of this type of embodiment is adopted, which will make the flow rate of the air flow flowing in through each air inlet area 12 as equal as possible, and the flow rate being as uniform as possible will make the heat dissipation effect as uniform as possible.

[0079] In the third embodiment, each air inlet area 12 is provided with a plurality of air inlet holes 121 , and the length L of the air inlet holes 121 in each air inlet area 12 gradually decreases in a direction approaching the fan 36 .

[0080] It can be understood that the closer the air flow is to the setting position of the fan 36, the faster the air flow rate is, and the larger the length L of the air inlet hole 121 is, the larger the cross-sectional area available for air flow to flow in. Therefore, the content of this type of embodiment will make the flow rate of the air flow flowing in through each air inlet area 12 as equal as possible, and the flow rate being as uniform as possible will make the heat dissipation effect as uniform as possible.

[0081] like Figure 4 As shown, in some embodiments of the energy storage battery 10 , the battery pack 21 further includes a shielding member 213 , which is disposed above each battery cell 211 , and shields each heat dissipation interval 212 .

[0082] It can be understood that the shielding member 213 protects each battery cell 211. The shielding member 213 shields each heat dissipation interval 212, so that the position where the intermediate air duct 32 is not provided in the heat dissipation interval 212 is also effectively limited, further ensuring the orderly flow of airflow.

[0083] like Figure 3 and Figure 4 As shown, in some embodiments of the energy storage battery 10 , the battery further includes a frame 214 and at least one steel belt 215 , each battery cell 211 is disposed on the frame 214 , and the steel belt 215 is wound around each battery cell 211 and the frame 214 .

[0084] It can be understood that the frame 214 is used to support each battery cell 211 , and the steel strip 215 is used to fix each battery cell 211 on the frame 214 .

[0085] like Figures 1 to 3 As shown, in some embodiments of the energy storage battery 10 , the energy storage battery 10 further includes a back cover 4 disposed on the shell 1 , the back cover 4 shields the air outlet area 11 , and a through hole 41 is opened on the back cover 4 , and the through hole 41 is aligned with the air outlet area 11 .

[0086] It can be understood that the back cover 4 plays a certain protective role. The back cover 4 and the housing 1 can be connected by a buckle.

[0087] The implementation of this utility model has the following beneficial effects:

[0088] The utility model relates to an energy storage battery. In the energy storage battery, a heat dissipation interval is arranged between two adjacent battery cells in each battery pack, an intermediate air duct is arranged in each heat dissipation interval, and an air inlet area corresponding to each heat dissipation interval is opened on a shell, so that airflow can be introduced into each intermediate air duct through each air inlet area, so that both opposite sides of each battery cell have stable airflow flowing through for heat dissipation; furthermore, through the arrangement of a collecting channel, the airflows flowing out of each intermediate air duct are collected and then flow to the air outlet area for discharge;

[0089] The airflow for heat dissipation is evenly distributed to the setting position of each battery cell since it enters the shell. At the same time, the airflow after heat exchange is collected and discharged, so that the flow direction of the airflow is stable and orderly. In this way, the uniformity of heat dissipation of each battery cell is improved, the charging and discharging performance of the energy storage battery is guaranteed, and the durability of the energy storage battery is improved.

[0090] The scheme of the utility model has been described in detail above with reference to the accompanying drawings. In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments. Those skilled in the art should also know that the actions and modules involved in the specification are not necessarily required for the utility model. In addition, it can be understood that the steps in the method of the embodiment of the utility model can be adjusted in order, merged and deleted according to actual needs, and the modules in the device of the embodiment of the utility model can be merged, divided and deleted according to actual needs.

[0091] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. An energy storage battery, characterized in that: It includes a shell, an energy storage device and a heat dissipation device; The shell is provided with an air outlet area and a plurality of air inlet areas; The energy storage device includes at least one battery pack, the battery pack includes a plurality of battery cells arranged in the housing, a heat dissipation gap is arranged between two adjacent battery cells, and each of the heat dissipation gaps is individually aligned with one of the air inlet areas; The heat dissipation device includes a collecting channel and a plurality of intermediate air ducts, the collecting channel is located in the shell, and the intermediate air ducts are arranged in a one-to-one correspondence in each heat dissipation interval, and each intermediate air duct is respectively abutted against the battery cells on both sides, and each intermediate air duct is connected to the collecting channel, and the collecting channel is connected to the air outlet area, and the air outlet area is used for air discharge.

2. The energy storage battery according to claim 1, characterized in that: The battery pack is provided with a first end and a second end along the arrangement direction of each of the battery cells, the distance from the first end to the air outlet area is greater than the distance from the second end to the air outlet area, and the heat dissipation gap is provided on both sides of the battery cell on the first end.

3. The energy storage battery according to claim 1, characterized in that: A plurality of splitter plates are arranged in the intermediate air guide duct, each of the splitter plates defines a plurality of intermediate air guide channels in the intermediate air guide duct, and each of the intermediate air guide channels is respectively connected to the air inlet area and the collecting channel; and / or The middle air guide pipe is cylindrical.

4. The energy storage battery according to claim 1, characterized in that: The energy storage device comprises two battery packs, the two battery packs are arranged side by side, and an overcurrent interval is arranged between the two battery packs; The heat dissipation device also includes a first wind shield and a second wind shield, the first wind shield is arranged above the flow interval, and the second wind shield is arranged in the flow interval at a position away from the air outlet area, and the first wind shield, the second wind shield, the inner wall of the flow interval and the inner wall of the shell together form the collecting channel.

5. The energy storage battery according to any one of claims 1 to 4, characterized in that: The battery core comprises a top wall, a bottom wall and a peripheral side wall arranged between the top wall and the bottom wall, the peripheral side wall comprises two wide surfaces and two narrow surfaces, and each of the heat dissipation intervals is defined by the wide surfaces.

6. The energy storage battery according to any one of claims 1 to 4, characterized in that: The heat dissipation device further includes a conduit and a fan, one end of the conduit is connected to the collecting channel, the other end of the conduit is connected to the air outlet area, and the fan is used to drive the air flow along the conduit to flow to the air outlet area; Wherein, the fan is arranged on the shell or on the manifold.

7. The energy storage battery according to claim 6, characterized in that: Each of the air inlet areas is provided with at least one air inlet hole, and the number of the air inlet holes in each of the air inlet areas gradually decreases in a direction approaching the fan; and / or A plurality of air inlet holes are provided in each of the air inlet areas, and the width of the air inlet holes in each of the air inlet areas gradually decreases in a direction approaching the fan; and / or A plurality of air inlet holes are provided in each of the air inlet areas, and the length of the air inlet holes in each of the air inlet areas gradually decreases in a direction approaching the fan.

8. The energy storage battery according to claim 1, characterized in that: The battery pack further comprises a shielding member, which is disposed above each of the battery cells and shields each of the heat dissipation intervals.

9. The energy storage battery according to claim 1 or 8, characterized in that: The battery pack further comprises a frame and at least one steel belt, each of the battery cells is arranged on the frame, and the steel belt is wound around each of the battery cells and the frame.

10. The energy storage battery according to claim 1, characterized in that: The energy storage battery further comprises a rear cover arranged on the shell, the rear cover shields the air outlet area, a through hole is opened on the rear cover, and the through hole is aligned with the air outlet area.

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