An energy storage device

Abstract

The application discloses an energy storage device, belonging to the battery field, comprising a battery pack, a battery management system, a supporting assembly and a base. The battery pack comprises a shell, an upper cover, the supporting assembly and a battery core assembly, the shell, the upper cover and the supporting assembly form a battery pack shell, and the battery core assembly is arranged in the shell; the battery management system is electrically connected with the battery core assembly; the supporting assembly comprises a supporting part, the bottom end of the battery pack shell is arranged on the supporting part in the vertical direction, and the supporting assembly is detachably arranged on the base in the horizontal direction; when the battery pack is installed or detached from the base, the capacity of the energy storage device is changed. According to actual needs, the capacity of the battery box and the energy storage device can be changed by adjusting the number or height of the battery pack; the supporting assembly is arranged, so that the battery is conveniently and quickly spliced and assembled, and great convenience is brought to the transportation, installation and maintenance of the product.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and in particular to an energy storage device. Background Technology

[0002] Energy storage technology is a revolutionary technology that will bring about changes to the development and operation of future energy systems. Among the many energy storage technologies, electrochemical energy storage technology has made the fastest progress. Compared with other methods, electrochemical energy storage has the advantages of being easy to use, causing less environmental pollution, not being limited by geographical location, not being limited by other cycles in energy conversion, having high conversion efficiency, and having high specific energy and specific power.

[0003] Current mainstream home energy storage battery packs often store relatively little energy, which cannot meet the needs of families with high electricity consumption. Furthermore, their capacity is difficult to adjust according to the actual needs of users. Home energy storage battery packs with large energy storage are very bulky and heavy, and cannot achieve quick plug-and-play assembly of batteries, which brings many inconveniences to transportation, installation, use and maintenance, resulting in a poor user experience.

[0004] CN212726513U discloses a novel residential energy storage cabinet, including a cabinet. A main control slot is located at the top of the cabinet, and a main controller is bolted into the main control slot. A bracket is welded inside the cabinet, and a sliding fastener is embedded in the surface of the bracket. A battery pack is slidably mounted inside the sliding fastener, and a storage battery is snapped into the battery pack. A base is welded to the bottom of the cabinet. This application suffers from limitations in energy storage, limited capacity, and inconvenience in transportation, installation, use, and maintenance.

[0005] CN213520187U discloses a multi-string lithium-ion battery pack with a protection plate for home energy storage, including a housing, a shock-absorbing plate, and a base plate. Wheels are fixedly installed on both sides of the bottom of the base plate, and a shock-absorbing plate is fixedly installed on the top of the base plate. A spring is fixedly installed between the shock-absorbing plate and the base plate. A sleeve rod is movably installed between the moving parts. A sliding frame is fixedly installed on the surface of the housing, and baffles are movably installed between the sliding frames. Ventilation openings are provided on the surface of the housing between the sliding frames, and a cooling fan is fixedly installed inside the housing. The lithium battery pack is fixedly installed inside the housing, and a protection plate is fixedly installed on the top of the lithium battery pack. This application, through a series of structures, allows the device to choose between active or natural heat dissipation during use, according to the user's needs. It can achieve equal charging of each individual lithium-ion battery in the battery pack and facilitates the movement of the device. However, this application has limited energy storage, the energy storage capacity is not adjustable, it cannot achieve quick plug-and-play assembly of batteries, and it does not include a moving component, making transportation, installation, use, and maintenance inconvenient. Summary of the Invention

[0006] Therefore, it is necessary to provide a battery box and energy storage device to address the above-mentioned technical problems, such as low energy storage capacity, difficulty in adjusting capacity, inability to quickly assemble and install batteries, and inconvenience in installation and transportation.

[0007] To solve the above-mentioned technical problems, the present invention provides an energy storage device, comprising:

[0008] A battery pack, comprising a housing, a top cover, a support assembly, and a cell assembly, wherein the housing, top cover, and support assembly enclose a battery pack casing, and the cell assembly is disposed within the casing;

[0009] A battery management system, which is electrically connected to the battery cell assembly; and

[0010] A base, wherein the supporting component is detachably mounted on the base in the horizontal direction;

[0011] The support assembly includes a support portion, and the bottom end of the battery pack casing is disposed on the support portion in a vertical direction;

[0012] The capacity of the energy storage device changes when the battery pack is installed or removed from the base.

[0013] Preferably, the bottom end of the battery pack casing is integrally fixed to the support portion in the vertical direction.

[0014] Preferably, the bottom end of the battery pack casing is detachably mounted on the support portion in the vertical direction.

[0015] Preferably, the support assembly further includes a first electrical connection portion, and the base further includes a second electrical connection portion that cooperates with the first electrical connection portion.

[0016] Preferably, the support assembly has a movable component at its bottom.

[0017] Preferably, the base is further provided with a guide portion, and the supporting component is further provided with a guide groove that cooperates with the guide portion, so that the supporting component moves along a preset path.

[0018] Preferably, the base further includes a fixing part / limiting part, and the supporting component is further provided with a limiting part / fixing part that cooperates with the fixing part / limiting part to restrict the movement of the supporting component.

[0019] Preferably, the battery management system includes a host computer and a slave computer. The slave computer is connected to the battery pack via a sampling line, and the host computer is connected to the slave computer via a signal line. The positive and negative terminals of the battery pack are electrically connected to the host computer.

[0020] Preferably, the energy storage device further includes a converter, which is connected to the battery management system.

[0021] Preferably, the battery pack further includes a venting section, and the base includes an adsorption chamber communicating with the venting section to adsorb the gas generated during thermal runaway of the battery pack.

[0022] Preferably, the energy storage device is further provided with a heat dissipation device.

[0023] Preferably, the energy storage device is further provided with a moving device and a pusher device.

[0024] The beneficial effects of this invention are:

[0025] Depending on actual needs, the capacity of the battery box and energy storage device can be changed by adjusting the number or height of the battery packs; by setting up support components, the battery splicing and assembly can be convenient and quick, which brings great convenience to the transportation, installation and maintenance of the product. Attached Figure Description

[0026] Figure 1 This is one of the structural schematic diagrams of the energy storage device in one embodiment;

[0027] Figure 2 This is a structural schematic diagram of the base and support assembly in one embodiment;

[0028] Figure 3 This is a schematic diagram of the battery pack structure in one embodiment;

[0029] Figure 4 This is a second schematic diagram of the energy storage device in one embodiment;

[0030] Figure 5 This is an exploded view of the energy storage device in one embodiment;

[0031] Figure 6 This is a partial structural schematic diagram of an energy storage device in one embodiment.

[0032] Figure label:

[0033] 1-Battery pack, 11-Casing, 12-Cell assembly, 13-Explosion vent, 14-Top cover, 2-Battery management system, 21-Lower unit, 22-Upper unit, 3-Support assembly, 31-Support part, 32-First electrical connection part, 33-Moving part, 34-Guide groove, 35-Limiting part, 4-Base, 41-Fixing part, 42-Adsorption chamber, 43-Guide part, 44-Second electrical connection part, 5-Inverter, 6-Heat dissipation device, 7-Moving device, 8-Hand-push device. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0035] Example 1

[0036] This embodiment illustrates an energy storage device, including a battery pack 1, a battery management system 2, and a base 4. The battery pack includes a housing 11, a top cover 14, a support component 3, and a cell assembly 12. The housing 11, top cover 14, and support component 3 enclose the battery pack casing. The cell assembly 12 is disposed within the casing. The battery management system 2 is electrically connected to the cell assembly 12. The support component 3 includes a support portion 31. The bottom end of the battery pack housing 11 is vertically disposed on the support portion 31. The support component 3 is detachably disposed horizontally on the base 4. When the battery pack 1 is installed or removed from the base 4, the capacity of the energy storage device changes.

[0037] It should be noted that, depending on actual needs, the capacity of the battery box and energy storage device can be changed by adjusting the number or height of the battery packs; by setting up support components, the battery splicing and assembly are convenient and quick, which brings great convenience to the transportation, installation and maintenance of the product.

[0038] Example 2

[0039] This embodiment illustrates an energy storage device, including a battery pack 1, a battery management system 2, and a base 4. The battery pack includes a housing 11, a top cover 14, a support component 3, and a cell assembly 12. The housing 11, top cover 14, and support component 3 enclose the battery pack casing. The cell assembly 12 is disposed within the casing. The battery management system 2 is electrically connected to the cell assembly 12. The support component 3 includes a support portion 31. The bottom end of the battery pack housing 11 is integrally fixed to the support portion 31 in the vertical direction. The support component 3 is detachably disposed on the base 4 in the horizontal direction. When the battery pack 1 is installed or removed from the base 4, the capacity of the energy storage device changes.

[0040] The support assembly 3 also includes a movable component 33 and a first electrical connection portion 32, and the base 4 also includes a second electrical connection portion 44. The movable component 33 allows the battery pack 1 mounted on the support assembly 3 to be moved quickly and installed and disassembled easily. When the support assembly 3 is installed on the base 4, the first electrical connection portion 32 and the second electrical connection portion 44 engage to electrically connect the battery pack 1 to the components inside the base 4. In this embodiment, the movable component 33 is a roller.

[0041] Example 3

[0042] This embodiment illustrates an energy storage device, including a battery pack 1, a battery management system 2, and a base 4. The battery pack includes a housing 11, a top cover 14, a support component 3, and a cell assembly 12. The housing 11, top cover 14, and support component 3 enclose the battery pack casing. The cell assembly 12 is disposed within the casing. The battery management system 2 is electrically connected to the cell assembly 12. The support component 3 includes a support portion 31. The bottom end of the battery pack housing 11 is detachably mounted on the support portion 31 in the vertical direction via a snap fastener. The support component 3 is detachably mounted on the base 4 in the horizontal direction. When the battery pack 1 is installed or removed from the base 4, the capacity of the energy storage device changes.

[0043] The support assembly 3 also includes a movable component 33 and a first electrical connection portion 32, and the base 4 also includes a second electrical connection portion 44. The movable component 33 allows the battery pack 1 mounted on the support assembly 3 to be moved quickly and installed and disassembled easily. When the support assembly 3 is installed on the base 4, the first electrical connection portion 32 and the second electrical connection portion 44 engage to electrically connect the battery pack 1 to the components inside the base 4. In this embodiment, the movable component 33 is a roller.

[0044] The base 4 also includes a guide portion 43, and the supporting component 3 also includes a guide groove 34 that mates with the guide portion 43, so that the supporting component 3 can move along a preset path, enabling convenient installation or disassembly. The base 4 also includes a fixing portion 41, and the supporting component 3 also includes a limiting portion 35 that mates with the fixing portion 41. After the supporting component 3 moves to a preset position and is installed on the base 4, the fixing portion 41 and the limiting portion 35 engage. In this embodiment, the fixing portion 41 is a plug, and the limiting portion 35 is a limiting hole. The plug can be engaged with the limiting hole to restrict the movement of the supporting component 3.

[0045] Example 4

[0046] like Figure 1 , Figure 2 As shown in the figure, this embodiment illustrates an energy storage device, including a battery pack 1, a battery management system 2, and a base 4. The battery pack includes a housing 11, a top cover 14, a support component 3, and a cell assembly 12. The housing 11, the top cover 14, and the support component 3 enclose the battery pack housing. The cell assembly 12 is disposed inside the housing. The battery management system 2 is electrically connected to the cell assembly 12. The support component 3 includes a support portion 31. The bottom end of the battery pack housing 11 is integrally fixed to the support portion 31 in the vertical direction. The support component 3 is detachably disposed on the base 4 in the horizontal direction. When the battery pack 1 is installed or removed from the base 4, the capacity of the energy storage device changes.

[0047] The support assembly 3 also includes a movable component 33 and a first electrical connection portion 32, and the base 4 also includes a second electrical connection portion 44. The movable component 33 allows the battery pack 1 mounted on the support assembly 3 to be moved quickly and installed and disassembled easily. When the support assembly 3 is installed on the base 4, the first electrical connection portion 32 and the second electrical connection portion 44 engage to electrically connect the battery pack 1 to the components inside the base 4. In this embodiment, the movable component 33 is a roller.

[0048] The base 4 also includes a guide portion 43, and the supporting component 3 also includes a guide groove 34 that mates with the guide portion 43, so that the supporting component 3 can move along a preset path, enabling convenient installation or disassembly. The base 4 also includes a fixing portion 41, and the supporting component 3 also includes a limiting portion 35 that mates with the fixing portion 41. After the supporting component 3 moves to a preset position and is installed on the base 4, the fixing portion 41 and the limiting portion 35 engage. In this embodiment, the fixing portion 41 is a plug, and the limiting portion 35 is a limiting hole. The plug can be engaged with the limiting hole to restrict the movement of the supporting component 3.

[0049] The battery management system 2 includes a lower-level computer 21 and a higher-level computer 22. The lower-level computer 21 is fixedly clamped to the battery pack 1 inside the housing 11, and the higher-level computer 22 is fixedly installed inside the support assembly 3. The battery pack 1 is connected to the lower-level computer 21 through a sampling line. The sampling line collects data such as temperature, voltage, and current of the battery pack 1 and transmits them to the higher-level computer 22 through a signal line. The higher-level computer 22 is electrically connected to the positive and negative terminals of the battery pack 1, processes the collected information, and ensures the normal operation of the energy storage device.

[0050] The energy storage device also includes a converter 5, which is electrically connected to the host computer 22 of the battery management system 2 via a line. It should be noted that the converter controls the charging and discharging process of the battery packs, performing AC-DC conversion, and can directly supply power to AC loads in the absence of a power grid. The battery management system determines the overall state of the energy storage device by detecting the status of each battery pack, and performs corresponding control adjustments and strategy implementations based on the status of each battery pack, thereby achieving charging and discharging management of the energy storage device and each battery pack to ensure the safe and stable operation of the energy storage device.

[0051] Example 5

[0052] This embodiment illustrates an energy storage device, including a battery pack 1, a battery management system 2, and a base 4. The battery pack includes a housing 11, a top cover 14, a support component 3, and a cell assembly 12. The housing 11, top cover 14, and support component 3 enclose the battery pack casing. The cell assembly 12 is disposed within the casing. The battery management system 2 is electrically connected to the cell assembly 12. The support component 3 includes a support portion 31. The bottom end of the battery pack housing 11 is detachably mounted on the support portion 31 in the vertical direction via a snap fastener. The support component 3 is detachably mounted on the base 4 in the horizontal direction. When the battery pack 1 is installed or removed from the base 4, the capacity of the energy storage device changes.

[0053] The support assembly 3 also includes a movable component 33 and a first electrical connection portion 32, and the base 4 also includes a second electrical connection portion 44. The movable component 33 allows the battery pack 1 mounted on the support assembly 3 to be moved quickly and installed and disassembled easily. When the support assembly 3 is installed on the base 4, the first electrical connection portion 32 and the second electrical connection portion 44 engage to electrically connect the battery pack 1 to the components inside the base 4. In this embodiment, the movable component 33 is a roller.

[0054] The base 4 is also provided with a guide part 43, and the supporting component 3 is also provided with a guide groove 34 that cooperates with the guide part 43, so that the supporting component 3 can move along a preset path to achieve convenient installation or disassembly. The base 4 also includes a limiting part 35, and the supporting component 3 is also provided with a fixing part 41 that cooperates with the limiting part 35. After the supporting component 3 moves to the preset position and is installed on the base 4, the fixing part 41 and the limiting part 35 are engaged. In this embodiment, the fixing part 41 is a plug and the limiting part 35 is a limiting hole. The plug can be engaged in the limiting hole to restrict the movement of the supporting component 3.

[0055] The battery management system 2 includes a lower-level computer 21 and a higher-level computer 22. The lower-level computer 21 and the higher-level computer 22 are fixedly installed inside the support assembly 3. The battery pack 1 is connected to the lower-level computer 21 via a sampling line. The sampling line collects data such as temperature, voltage, and current of the battery pack 1 and transmits it to the higher-level computer 22 via a signal line. The higher-level computer 22 is electrically connected to the positive and negative terminals of the battery pack 1 and processes the collected information to ensure the normal operation of the energy storage device.

[0056] The energy storage device also includes a converter 5. It should be noted that the converter controls the charging and discharging process of the battery packs, performing AC-DC conversion, and can directly supply power to AC loads in the absence of a power grid. The battery management system determines the overall state of the energy storage device by detecting the status of each battery pack, and performs corresponding control adjustments and strategy implementations based on the status of each battery pack, thereby achieving charging and discharging management of the energy storage device and each battery pack to ensure the safe and stable operation of the energy storage device.

[0057] like Figure 3As shown, the battery pack 1 also includes a venting section 13, and the base 4 includes an adsorption chamber 42 connected to the venting section 13 to adsorb the gas generated when the battery pack 1 experiences thermal runaway, thereby controlling thermal runaway and its spread in a timely manner.

[0058] Example 6

[0059] like Figure 4 , Figure 5 , Figure 6 As shown in the figure, this embodiment illustrates an energy storage device, including a battery pack 1, a battery management system 2, and a base 4. The battery pack includes a housing 11, a top cover 14, a support component 3, and a cell assembly 12. The housing 11, the top cover 14, and the support component 3 enclose the battery pack housing. The cell assembly 12 is disposed inside the housing. The battery management system 2 is electrically connected to the cell assembly 12. The support component 3 includes a support portion 31. The bottom end of the battery pack housing 11 is vertically disposed on the support portion 31. The support component 3 is detachably disposed horizontally on the base 4. When the battery pack 1 is installed or removed from the base 4, the capacity of the energy storage device changes.

[0060] The support assembly 3 also includes a movable component 33 and a first electrical connection portion 32, and the base 4 also includes a second electrical connection portion 44. The movable component 33 allows the battery pack 1 mounted on the support assembly 3 to be moved quickly and installed and disassembled easily. When the support assembly 3 is installed on the base 4, the first electrical connection portion 32 and the second electrical connection portion 44 engage to electrically connect the battery pack 1 to the components inside the base 4. In this embodiment, the movable component 33 is a roller.

[0061] The base 4 also includes a guide portion 43, and the supporting component 3 also includes a guide groove 34 that mates with the guide portion 43, so that the supporting component 3 can move along a preset path, enabling convenient installation or disassembly. The base 4 also includes a fixing portion 41, and the supporting component 3 also includes a limiting portion 35 that mates with the fixing portion 41. After the supporting component 3 moves to a preset position and is installed on the base 4, the fixing portion 41 and the limiting portion 35 engage. In this embodiment, the fixing portion 41 is a plug, and the limiting portion 35 is a limiting hole. The plug can be engaged with the limiting hole to restrict the movement of the supporting component 3.

[0062] The battery management system 2 includes a lower-level computer 21 and a higher-level computer 22, which are fixedly installed within the support assembly 3. The battery pack 1 is connected to the lower-level computer 21 via a sampling line. The sampling line collects data such as temperature, voltage, and current of the battery pack 1 and transmits it to the higher-level computer 22 via a signal line. The higher-level computer 22 is electrically connected to the positive and negative terminals of the battery pack 1 and processes the collected information to ensure the normal operation of the energy storage device.

[0063] The energy storage device also includes a converter 5. It should be noted that the converter controls the charging and discharging process of the battery packs, performing AC-DC conversion, and can directly supply power to AC loads in the absence of a power grid. The battery management system determines the overall state of the energy storage device by detecting the status of each battery pack, and performs corresponding control adjustments and strategy implementations based on the status of each battery pack, thereby achieving charging and discharging management of the energy storage device and each battery pack to ensure the safe and stable operation of the energy storage device.

[0064] The battery pack 1 also includes a venting section 13, and the base 4 includes an adsorption chamber 42 connected to the venting section 13 to adsorb the gas generated when the battery pack 1 experiences thermal runaway, thereby controlling thermal runaway and its spread in a timely manner.

[0065] The energy storage device is also equipped with a heat dissipation device 6. In this embodiment, the heat dissipation device 6 is a cooling fan, which dissipates the heat generated by the battery pack in a timely manner to prevent the energy storage system from overheating.

[0066] The energy storage device is also equipped with a moving device 7 and a pusher device 8. In this embodiment, the moving device 7 is a moving wheel and the pusher device 8 is a pusher, which makes the entire energy storage device easy and quick to move.

[0067] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. An energy storage device, characterized in that, include: A battery pack, comprising a housing, a top cover, a support assembly, and a cell assembly, wherein the housing, top cover, and support assembly enclose a battery pack casing, and the cell assembly is disposed within the casing; A battery management system, which is electrically connected to the battery cell assembly; and A base, wherein the supporting component is detachably mounted on the base in the horizontal direction; The support assembly includes a support portion, and the bottom end of the battery pack housing is detachably mounted on the support portion in a vertical direction; the bottom of the support assembly is provided with a moving part; the base is also provided with a guide portion, and the support assembly is also provided with a guide groove that cooperates with the guide portion, so that the support assembly moves along a preset path; The supporting component further includes a first electrical connection portion, and the base further includes a second electrical connection portion that mates with the first electrical connection portion; The battery pack also includes an explosion vent, and the base includes an adsorption chamber communicating with the explosion vent to adsorb the gas generated when the battery pack experiences thermal runaway. The capacity of the energy storage device changes when the battery pack is installed or removed from the base.

2. The energy storage device as described in claim 1, characterized in that: The base also includes a fixing part / limiting part, and the supporting component is further provided with a limiting part / fixing part that cooperates with the fixing part / limiting part to restrict the movement of the supporting component.

3. The energy storage device as described in claim 1, characterized in that: The battery management system includes a host computer and a slave computer. The slave computer is connected to the battery pack via a sampling line, and the host computer is connected to the slave computer via a signal line. The positive and negative terminals of the battery pack are electrically connected to the host computer.

4. The energy storage device as described in claim 1, characterized in that: The energy storage device also includes a converter, which is connected to the battery management system.

5. The energy storage device as described in claim 1, characterized in that: The energy storage device is also equipped with a heat dissipation device.

6. The energy storage device as described in claim 1, characterized in that: The energy storage device is also equipped with a moving device and a hand-push device.

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