Energy storage device

Abstract

The utility model relates to the technical field of energy batteries, and discloses an energy storage device, which comprises a box body, a connecting body and batteries, the connecting body is arranged in the box body, a plurality of connectors are arranged on the connecting body, the batteries are arranged in the box body, and the plurality of batteries are inserted into the plurality of connectors in a one-to-one correspondence manner. The connector is arranged in the box body, the connectors are arranged on the connector, so that the batteries are inserted into the connectors in a one-to-one correspondence mode, the batteries are connected and assembled conveniently through the insertion mode between the batteries and the connectors, and when a certain battery in the box body is subjected to thermal runaway, a defective battery can be quickly pulled out from the connectors conveniently, so that the thermal runaway of the battery in the box body is avoided, and the service life of the battery is prolonged. A defective battery is isolated in time, influence on other batteries is avoided, loss caused by thermal runaway is reduced as much as possible, and the whole energy storage device is not scrapped.

Description

Technical Field

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

[0002] The containers of large energy storage power stations each contain 4,000 to 10,000 single cells. These single cells are first connected in series and parallel to form battery boxes, which are then combined into battery clusters. Several battery clusters are fixed in the container to form an energy storage device.

[0003] Since single cells are usually fixed in series and parallel by welding, when a single cell in the container experiences thermal runaway, the problematic battery cannot be quickly isolated, which affects the surrounding batteries and ultimately renders the entire container scrapped. Utility Model Content

[0004] In view of this, the utility model provides an energy storage device to solve the problem that after a single battery in an existing container has thermal runaway, the problematic battery cannot be quickly isolated, resulting in an impact on surrounding batteries and ultimately causing the entire container to be scrapped.

[0005] The utility model provides an energy storage device, comprising a box, a connector and a battery, wherein the connector is arranged in the box, a plurality of connectors are arranged on the connector, the battery is arranged in the box, a plurality of batteries are arranged, and the plurality of batteries are plugged into the plurality of connectors one by one.

[0006] Beneficial effects: A connector is provided in the box, and a plurality of connectors are provided on the connector, so that a plurality of batteries can be plugged into the plurality of connectors one by one. The plug-in form between the battery and the connector facilitates battery connection and assembly. When a battery in the box has thermal runaway, the problematic battery can be quickly unplugged from the connector, so that the problematic battery can be isolated in time to avoid affecting other batteries, thereby minimizing the loss caused by thermal runaway and preventing the entire energy storage device from being scrapped.

[0007] In an optional embodiment, the connector is vertically arranged in the box, a plurality of connectors are arranged on one side and / or both sides of the connector, and the battery is horizontally arranged in the box.

[0008] Beneficial effect: By vertically arranging the connector in the box, multiple connectors are arranged on one side and / or both sides of the connector, so that the batteries can be arranged horizontally in the box and located on one side and / or both sides of the connector, thereby improving the compactness and capacity of the battery layout in the box.

[0009] In an optional embodiment, the connector is disposed transversely in the box, the connector is disposed on the top surface and / or bottom surface of the connector, and the battery is disposed vertically in the box.

[0010] Beneficial effect: By arranging the connector horizontally in the box, the connector can be arranged on the top surface and / or bottom surface of the connector, so that the battery can be arranged vertically in the box to meet different layout requirements.

[0011] In an optional embodiment, the connector is located at the bottom of the box, the connector is arranged on the top surface of the connector, and the battery is vertically arranged above the connector; or, the connector is located at the top of the box, the connector is arranged on the bottom surface of the connector, and the battery is vertically arranged below the connector.

[0012] Beneficial effects: By arranging the connector at the bottom of the box, the battery is vertically plugged into the top of the connector, so that the connector can support multiple batteries; by arranging the connector at the top of the box, the battery is vertically plugged into the bottom of the connector, and the connector can plug multiple batteries.

[0013] In an optional embodiment, the box body has an opening, and the energy storage device further includes a capture mechanism, the capture mechanism has a first use state and a second use state, in the first use state, the capture mechanism and the box body are connected to seal the opening, in the second use state, the battery ejected from the box body pushes the capture mechanism and the box body to separate, so that the battery is captured in the capture mechanism.

[0014] Beneficial effects: an opening is further provided on the box body, and a capturing mechanism is provided. When the capturing mechanism is in a first use state, the capturing mechanism and the box body are connected to seal the opening. At this time, the capturing mechanism replaces part of the cabinet door of the box body to seal the box body, which can reduce the weight of the box body and the setting cost. When the capturing mechanism is in a second use state, the battery ejected from the box body pushes the capturing mechanism and the box body to separate, so that the battery is captured in the capturing mechanism, which can achieve deceleration of the battery and avoid battery exposure, thereby reducing the safety hazard of the energy storage device.

[0015] In an optional embodiment, the area of ​​the capture mechanism is larger than the area of ​​the opening.

[0016] Beneficial effects: ensuring that the capture mechanism can seal the opening in the first use state, and also facilitating the connection and fixation between the capture mechanism and the box body.

[0017] In an optional embodiment, the opening is provided on the side of the box, and the capture mechanism is arranged on the side of the box; or, the opening is provided on the top of the box, and the capture mechanism is arranged on the top of the box; and / or, the capture mechanism is an explosion-proof cloth.

[0018] Beneficial effects: The capture mechanism can be arranged on the side or top of the box according to the setting position of the opening to capture batteries sprayed in different directions. The explosion-proof cloth has certain elasticity and strength, and has the characteristics of waterproof, fireproof and heat-insulating. When the explosion-proof cloth is wrapped around the opening of the box, it has a good sealing effect on the opening.

[0019] In an optional embodiment, the connector is provided with a first quick-plug connector and a second quick-plug connector, the battery is provided with a positive electrode column and a negative electrode column, the positive electrode column is plug-fitted with the first quick-plug connector, and the negative electrode column is plug-fitted with the second quick-plug connector.

[0020] Beneficial effect: When plugging in, the positive pole of the battery is plugged into the first quick-plug connector of the connector, and the negative pole of the battery is plugged into the second quick-plug connector of the connector, thereby realizing a quick plug-in connection between the battery and the connector. It is easy to assemble and can be quickly plugged in and out, which is convenient for quickly unplugging the isolation when the battery has thermal runaway, reducing the adverse effects on surrounding batteries.

[0021] In an optional implementation, the energy storage device further includes a cooling system, and the cooling system is used to cool the battery.

[0022] Beneficial effect: The cooling system can cool down the battery and improve the heating condition of the battery during use.

[0023] In an optional embodiment, the cooling system includes a first cooling mechanism and / or a second cooling mechanism, the first cooling mechanism is connected to the interior of the battery for cooling the interior of the battery, and the second cooling mechanism is arranged in the box for cooling the exterior of the battery.

[0024] Beneficial effect: By setting the first cooling mechanism and the second cooling mechanism, the inside and outside of the battery can be cooled, which effectively improves the temperature rise and heat generation of the battery and prolongs the service life of the energy storage device.

[0025] In an optional embodiment, the first cooling mechanism includes a cooling chamber arranged in the battery and a liquid inlet quick plug connector and a liquid outlet quick plug connector arranged on the connector, the cooling chamber has a liquid inlet interface and a liquid outlet interface, the liquid inlet interface and the liquid inlet quick plug connector are plugged together, and the liquid outlet interface and the liquid outlet quick plug connector are plugged together.

[0026] Beneficial effect: A cooling chamber is arranged in the battery, and the liquid inlet interface of the cooling chamber is plugged into and matched with the liquid inlet quick plug joint of the connector, and the liquid outlet interface of the cooling chamber is plugged into and matched with the liquid outlet quick plug joint of the connector, so that cold liquid flows from the liquid inlet quick plug joint through the liquid inlet quick plug joint into the cooling chamber to cool the inside of the battery, and the cooled cold liquid flows from the liquid outlet interface to the liquid outlet quick plug joint to realize the circulation of the cold liquid and realize continuous cooling of the inside of the battery.

[0027] In an optional embodiment, the second cooling mechanism is a liquid cooling plate or a cooling bag, and the liquid cooling plate or the cooling bag is arranged at the bottom of the plurality of batteries or between two adjacent batteries; or, when the batteries are vertically arranged below the connector, the second cooling mechanism is a coolant filled in the box body, the coolant immerses the batteries, and the height of the coolant is lower than the height of the connector.

[0028] Beneficial effect: The second cooling mechanism can be set to a variety of forms as needed, all of which can cool the outside of the battery and improve the heating condition of the battery.

[0029] In an optional embodiment, the energy storage device further includes: a support frame, disposed in the box body, for supporting the battery; and / or, an installation base, disposed at the bottom of the box body, suitable for installation on the ground or in a foundation pit on the ground.

[0030] Beneficial effects: The support frame supports the battery to ensure the reliability of the connection between the battery and the connector. The installation foundation facilitates the installation of the box on the ground or in a foundation pit on the ground. It can also effectively separate the bottom of the box and the ground, which is beneficial to the insulation and moisture-proofing of the box. The setting of the foundation pit reduces the exposed volume of the energy storage device during installation and is also beneficial to insulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A top view of the energy storage device of the first embodiment of the utility model;

[0033] Figure 2 It is a left side view of an energy storage device according to one embodiment of the utility model;

[0034] Figure 3 A cross-sectional view of an energy storage device according to an embodiment of the utility model;

[0035] Figure 4 A cross-sectional view of an energy storage device according to another embodiment of the utility model;

[0036] Figure 5 A left side view of an energy storage device according to another embodiment of the utility model;

[0037] Figure 6 A cross-sectional view of an energy storage device according to another embodiment of the utility model;

[0038] Figure 7 This is a left side view of a battery container according to another embodiment of the present utility model;

[0039] Figure 8 A front view of a battery according to an embodiment of the present utility model;

[0040] Fig. 9 A bottom view of a battery according to an embodiment of the present utility model;

[0041] Fig.10 A top view of a connector according to an embodiment of the present utility model;

[0042] Fig.11 for Fig.10 Sectional view of AA in the middle;

[0043] Fig.12 This is a schematic diagram of the structure of the battery and the connector plugged in and matched with each other in an embodiment of the utility model;

[0044] Fig.13 This is a schematic structural diagram of an energy storage device with a capture mechanism in one embodiment of the utility model;

[0045] Fig.14 A cross-sectional view of an energy storage device with a capture mechanism according to another embodiment of the present utility model;

[0046] Fig.15 A side view of an energy storage device with a capture mechanism according to another embodiment of the present utility model;

[0047] Fig.16 A cross-sectional view of an energy storage device with a support frame according to an embodiment of the utility model;

[0048] Fig.17 This is a schematic diagram of the structure of the energy storage device of an embodiment of the utility model installed on the ground;

[0049] Fig.18 This is a schematic structural diagram of an energy storage device according to an embodiment of the utility model installed in a foundation pit.

[0050] Description of reference numerals:

[0051] 1. Box; 2. Connector; 21. Connector; 211. First quick-connect connector; 212. Second quick-connect connector; 213. Liquid inlet quick-connect connector; 214. Liquid outlet quick-connect connector; 3. Battery; 31. Positive pole; 32. Negative pole; 33. Liquid inlet interface; 34. Liquid outlet interface; 4. Capture mechanism; 5. Support frame; 6. Liquid cooling plate; 7. Installation foundation; 8. Inverter system;

[0052] 100, coolant; 200, ground; 300, foundation pit. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0054] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They 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 direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0055] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0057] Combine the following Figures 1 to 18 , describing an embodiment of the utility model.

[0058] According to an embodiment of the utility model, an energy storage device is provided, including a box body 1, a connector 2 and a battery 3, wherein the connector 2 is arranged in the box body 1, and a plurality of connectors 21 are arranged on the connector 2; the battery 3 is arranged in the box body 1, and a plurality of batteries 3 are arranged, and the plurality of batteries 3 are plugged into the plurality of connectors 21 one by one.

[0059] The energy storage device of this embodiment has a connector 2 disposed in a housing 1, and a plurality of connectors 21 disposed on the connector 2, so that a plurality of batteries 3 can be plugged into the plurality of connectors 21 one by one. The plug-in connection between the batteries 3 and the connectors 21 facilitates the connection and assembly of the batteries 3. When a battery 3 in the housing 1 has thermal runaway, the problematic battery 3 can be quickly unplugged from the connector 21, so that the problematic battery 3 can be isolated in time to avoid affecting other batteries 3, thereby minimizing the loss caused by thermal runaway and preventing the entire energy storage device from being scrapped.

[0060] The box body 1 protects the battery 3 from rain and moisture, etc. In terms of shape, the box body 1 can be a circular box body 1 or a geometric box body 1. In this embodiment, the box body 1 is a rectangular box body 1 for exemplary description.

[0061] The connector 2 serves to connect and support multiple connectors 21. Specifically, the connector 2 may be a plate-like structure, and multiple connectors 21 are arranged in a matrix in the horizontal and vertical directions along the surface of the plate-like structure. The connectors 21 and the connector 2 may be fixed by bolts or pins.

[0062] The connector 21 serves to electrically connect the battery 3 . By connecting a plurality of connectors 21 in series or in parallel via wires, a plurality of batteries 3 can be connected in series or in parallel.

[0063] It should be noted here that when multiple batteries 3 are connected in series through the connector 21, a bypass circuit is provided inside the connector 21. When an abnormal battery 3 is detected, the abnormal battery 3 is short-circuited and shielded through the internal control system, and the bypass switch on the bypass circuit is cut out to ensure that the circuit at the connector 21 is connected through the bypass circuit after the battery 3 is unplugged, and then the abnormal battery 3 can be unplugged.

[0064] In this embodiment, the battery 3 uses a super large cylindrical battery 3, and the capacity of a single battery 3 is 1000Ah to 10000Ah, which increases the capacity of the battery 3 and extends the battery life of the energy storage device.

[0065] In some embodiments, Figures 1 to 3 As shown, the connector 2 is vertically arranged in the box body 1 , a plurality of connectors 21 are arranged on one side and / or both sides of the connector 2 , and the battery 3 is horizontally arranged in the box body 1 .

[0066] By vertically arranging the connector 2 in the box body 1, a plurality of connectors 21 are arranged on one side and / or both sides of the connector 2, so that the battery 3 can be arranged horizontally in the box body 1 and located on one side and / or both sides of the connector 2, thereby improving the compactness and capacity of the battery 3 in the box body 1.

[0067] In this embodiment, the plate-like structure connector 2 can be vertically arranged in the middle of the box body 1 along the length direction of the box body 1, and multiple connectors 21 are provided on both sides of the connector 2, and multiple batteries 3 are symmetrically arranged on both sides of the connector 2 along the length direction and height direction of the box body 1.

[0068] It can be understood here that when the connector 2 is disposed in the middle of the box body 1 , the connector 2 can also serve as an intermediate reinforcement structure of the box body 1 to enhance the overall strength of the energy storage device.

[0069] In other embodiments, Figures 4 to 7 As shown, the connector 2 is disposed transversely in the box body 1 , the connector 21 is disposed on the top surface and / or the bottom surface of the connector 2 , and the battery 3 is disposed vertically in the box body 1 .

[0070] In this arrangement, by horizontally arranging the connector 2 in the box body 1, the connector 21 can be arranged on the top surface and / or bottom surface of the connector 2, so that the battery 3 can be arranged vertically in the box body 1 to meet different layout requirements.

[0071] Optional, such as Figure 4 and Figure 5 As shown, the connector 2 can be located at the bottom of the box 1, the connector 21 is arranged on the top surface of the connector 2, and the battery 3 is vertically arranged above the connector 2. By arranging the connector 2 at the bottom of the box 1, the battery 3 is vertically plugged above the connector 2, so that the connector 2 can support multiple batteries 3, and the vertically arranged battery 3 is also convenient for installation (hoisting) or plugging.

[0072] Or, if Figure 6 and Figure 7 As shown, the connector 2 can also be located at the top of the box 1, the connector 21 is arranged on the bottom surface of the connector 2, and the battery 3 is vertically arranged below the connector 2. By arranging the connector 2 at the top of the box 1, the battery 3 is vertically plugged under the connector 2, and the connector 2 can achieve the plug-in effect for multiple batteries 3.

[0073] As for the specific connection between the connector 21 and the battery 3, Figures 8 to 12 As shown, the connector 21 is provided with a first quick-plug connector 211 and a second quick-plug connector 212, and the battery 3 is provided with a positive pole 31 and a negative pole 32. The positive pole 31 is plugged into the first quick-plug connector 211, and the negative pole 32 is plugged into the second quick-plug connector 212.

[0074] During plugging, the positive pole 31 of the battery 3 is plugged into the first quick-plug connector 211 of the connector 21, and the negative pole 32 of the battery 3 is plugged into the second quick-plug connector 212 of the connector 21, thereby realizing a quick plug connection between the battery 3 and the connector 21. The assembly is convenient and quick plugging and unplugging can be realized, which is convenient for quickly unplugging the isolation when thermal runaway occurs in the battery 3, thereby reducing the adverse effects on the surrounding batteries 3.

[0075] Specifically, in order to reduce the difficulty of plugging and unplugging, the positive pole 31 and the negative pole 32 can be set as trapezoidal poles, and the first quick-plug connector 211 and the second quick-plug connector 212 can be set as trapezoidal grooves, and the trapezoidal poles can be plugged into the trapezoidal grooves.

[0076] In this embodiment, the energy storage device further includes a cooling system, and the cooling system is used to cool the battery 3 to improve the heating condition of the battery 3 during use.

[0077] Specifically, the cooling system includes a first cooling mechanism and / or a second cooling mechanism, wherein the first cooling mechanism is connected to the interior of the battery 3 for cooling the interior of the battery 3 , and the second cooling mechanism is arranged in the box 1 for cooling the exterior of the battery 3 .

[0078] By setting the first cooling mechanism and the second cooling mechanism, the inside and outside of the battery 3 can be cooled, which effectively improves the temperature rise and heat generation of the battery 3 and prolongs the service life of the energy storage device.

[0079] As for the specific structure, in this embodiment, see Figures 8 to 11 As shown, the first cooling mechanism includes a cooling chamber arranged in the battery 3 and a liquid inlet quick plug connector 213 and a liquid outlet quick plug connector 214 arranged on the connector 21, the cooling chamber has a liquid inlet interface 33 and a liquid outlet interface 34, the liquid inlet interface 33 and the liquid inlet quick plug connector 213 are plugged together, and the liquid outlet interface 34 and the liquid outlet quick plug connector 214 are plugged together.

[0080] A cooling chamber is provided in the battery 3, and a liquid inlet interface 33 of the cooling chamber is plugged into and matched with a liquid inlet quick plug connector 213 of the connector 21, and a liquid outlet interface 34 of the cooling chamber is plugged into and matched with a liquid outlet quick plug connector 214 of the connector 21, so that cold liquid flows from the liquid inlet quick plug connector 213 through the liquid inlet interface 33 into the cooling chamber to cool the inside of the battery 3, and the cooled cold liquid flows from the liquid outlet interface 34 to the liquid outlet quick plug connector 214 to realize the circulation of the cold liquid and realize continuous cooling of the inside of the battery 3.

[0081] To facilitate plugging and unplugging, the liquid inlet quick plug connector 213 and the liquid outlet quick plug connector 214 can be set as trapezoidal quick slots, and the liquid inlet interface 33 and the liquid outlet interface 34 can be set as trapezoidal quick plugs, which can be plugged into the trapezoidal quick slots.

[0082] It can be understood here that the liquid inlet quick connector 213 and the liquid outlet quick connector 214 are both set through the connector 21, and the liquid inlet quick connector 213 is connected to the external liquid supply pipeline to provide cold liquid to the cooling chamber, and the liquid outlet quick connector 214 is connected to the external liquid return pipeline to facilitate the return of the cold liquid flowing out of the cooling chamber.

[0083] In an optional embodiment, the second cooling mechanism is a liquid cooling plate 6 or a cooling bag, which is arranged at the bottom of the multiple batteries 3 or between two adjacent batteries 3; or, when the battery 3 is vertically arranged below the connector 2, the second cooling mechanism is the coolant 100 filled in the box body 1, the coolant 100 immerses the battery 3, and the height of the coolant 100 is lower than the height of the connector 2.

[0084] The second cooling mechanism can be configured in a variety of forms as required, all of which can cool the outside of the battery 3 and improve the heating condition of the battery 3 .

[0085] The structure of the liquid cooling plate 6 or the liquid cooling bag is the prior art, and will not be described in detail in this embodiment. The height of the cooling liquid 100 is lower than the height of the connector 2, so as to avoid the cooling liquid 100 affecting the connector 21 on the connector 2.

[0086] In terms of specific application scenarios, when the connector 2 is vertically arranged in the box 1 and the battery 3 is horizontally arranged in the box 1, the liquid cooling plate 6 or the liquid cooling bag can be fixed at the bottom of the box 1 and located below the multiple batteries 3 and the connector 2. When the connector 2 is horizontally arranged in the box 1 and the battery 3 is vertically arranged above the connector 2, the liquid cooling plate 6 or the liquid cooling bag can be fixed at the bottom of the box 1 and located below the connector 2. When the connector 2 is horizontally arranged in the box 1 and the battery 3 is vertically arranged below the connector 2, the coolant 100 is filled into the box 1, and the coolant 100 immerses the battery 3 for cooling.

[0087] In some embodiments, Figures 13 to 15 As shown, the box body 1 has an opening, and the energy storage device also includes a capture mechanism 4, which has a first use state and a second use state. In the first use state, the capture mechanism 4 and the box body 1 are connected to seal the opening. In the second use state, the battery 3 ejected from the box body 1 pushes the capture mechanism 4 and the box body 1 to separate, so that the battery 3 is captured in the capture mechanism 4.

[0088] An opening is further provided on the box body 1, and a capturing mechanism 4 is provided. When the capturing mechanism 4 is in a first use state, the capturing mechanism 4 is connected to the box body 1 to seal the opening. At this time, the capturing mechanism 4 replaces part of the cabinet door of the box body 1 to seal the box body 1, thereby reducing the weight and setting cost of the box body 1. When the capturing mechanism 4 is in a second use state, the battery 3 ejected from the box body 1 pushes the capturing mechanism 4 and the box body 1 to separate, so that the battery 3 is captured in the capturing mechanism 4, thereby achieving deceleration of the battery 3 and avoiding exposure of the battery 3, thereby reducing the safety hazard of the energy storage device.

[0089] It should be noted here that when the battery 3 in the box body 1 has thermal runaway, the internal winding core of the battery 3 or even the entire battery 3 can be ejected from the box body 1 and sprayed toward the capture mechanism 4 through the opening of the box body 1, pushing the capture mechanism 4 and the box body 1 to separate, so that the battery 3 or the internal winding core and the capture mechanism 4 fly away from the box body 1 together, and the capture mechanism 4 can also decelerate the ejected battery 3 or the internal winding core. Finally, the battery 3 or the internal winding core can be wrapped and captured by the capture mechanism 4, thereby preventing the thermal runaway battery 3 from being exposed to the outside and causing a safety accident.

[0090] In some specific embodiments, the capture mechanism 4 and the housing 1 can be connected by hooking or adhesion, and the connection force is smaller than the ejection force when the battery 3 thermally runs away, that is, when the battery 3 thermally runs away and ejects, the ejection force can disconnect the connection between the capture mechanism 4 and the housing 1, which can be specifically designed through experiments.

[0091] In addition, in some other specific embodiments, a sealed connection can be adopted between the capture mechanism 4 and the box body 1, and a tear line is opened on the capture mechanism 4 along the sealed connection. When the capture mechanism 4 is in the second use state, the capture mechanism 4 is torn along the tear line, thereby separating from the box body 1.

[0092] Specifically, the capture mechanism 4 can be an explosion-proof cloth, and the surface of the explosion-proof cloth in contact with the battery 3 can be sprayed with a fire-extinguishing material to extinguish the flying thermal runaway battery 3. The explosion-proof cloth has certain elasticity and strength, and has the characteristics of being waterproof, fireproof, and heat-insulating. When the explosion-proof cloth is wrapped around the opening of the box body 1, it has a good sealing effect on the opening.

[0093] As for the specific material, the capture mechanism 4 can be made of a carbon fiber composite material.

[0094] Preferably, the area of ​​the capture mechanism 4 is larger than the area of ​​the opening, so as to ensure that the capture mechanism 4 can seal the opening in the first use state and facilitate the connection and fixation between the capture mechanism 4 and the box body 1 .

[0095] As for the specific setting location, Fig.13As shown, when the opening is set on the side of the box body 1, the capture mechanism 4 is arranged on the side of the box body 1, so as to seal the opening on the side of the box body 1, and when the battery 3 thermally runs away, the battery 3 inside the box body 1 flies out from the opening on the side of the box body 1, which can push the capture mechanism 4 and the box body 1 to separate, so that the battery 3 and the capture mechanism 4 fly out together.

[0096] In other embodiments, Fig.14 and Fig.15 As shown, when the opening is set at the top of the box body 1, the capture mechanism 4 is arranged at the top of the box body 1, so as to seal the opening at the top of the box body 1, and when the battery 3 thermally runs away, the battery 3 inside the box body 1 flies out from the opening at the top of the box body 1, which can push the capture mechanism 4 and the box body 1 to separate, so that the battery 3 and the capture mechanism 4 fly out together.

[0097] Preferably, the capture mechanism 4, the opening of the box body 1 and the end cover of the battery 3 (the non-plug-in side) are arranged in a one-to-one correspondence, and a weak area can be set on the end cover of the battery 3. When thermal runaway occurs in the battery 3, it explodes from the weak area and sprays toward the opening, thereby pushing the capture mechanism 4 and the box body 1 to separate. Finally, the battery 3 is decelerated by the capture mechanism 4, wrapped and captured, and flies away from the box body 1 together.

[0098] In addition to the above settings, if Figure 3 and Fig.16 As shown, the energy storage device of this embodiment further includes a support frame 5, which is arranged in the box body 1 and is used to support the battery 3. The support frame 5 is further arranged in the box body 1, and the battery 3 is arranged on the support frame 5, so that the support frame 5 supports the battery 3 to ensure the connection reliability between the battery 3 and the connector 21.

[0099] Exemplarily, the support frame 5 may be specifically in a grid shape, including a plurality of mounting cavities arranged in a matrix, and a plurality of batteries 3 are mounted in the plurality of mounting cavities in a one-to-one correspondence, thereby achieving one-to-one support for the batteries 3 and reducing displacement or loosening of the batteries 3 during use.

[0100] For easy installation, the energy storage device further includes an installation base 7, which is arranged at the bottom of the box body 1 and is suitable for installation on the ground 200 or in a foundation pit 300 on the ground 200. The installation base 7 facilitates the installation of the box body 1 on the ground 200 or in a foundation pit 300 on the ground 200, and can also effectively separate the bottom of the box body 1 from the ground 200, which is beneficial to the heat preservation and moisture resistance of the box body 1. The setting of the foundation pit 300 reduces the exposed volume of the energy storage device during installation and is also beneficial to heat preservation.

[0101] Meanwhile, the energy storage device of this embodiment further includes an inverter system 8 , which is disposed in the box body 1 and located on one side of the box body 1 to minimize the space occupied in the box body 1 .

[0102] In this embodiment, the inverter system 8 is located above or on one side of the second cooling mechanism, so that the second cooling mechanism can simultaneously cool the inverter system 8 to improve the heating condition during use.

[0103] The inverter system 8 not only has the DC to AC conversion function, but also has the function of maximizing the performance of the battery 3 and the system fault protection function. Since the inverter system 8 is an existing structure, it will not be described in detail in this embodiment.

[0104] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. An energy storage device, It is characterized in that include: Box body (1); A connecting body (2) is arranged in the box body (1), and a plurality of connectors (21) are arranged on the connecting body (2); A battery (3) is arranged in the box (1), and a plurality of the batteries (3) are provided. The plurality of batteries (3) are plugged into the plurality of connectors (21) in a one-to-one correspondence.

2. The energy storage device according to claim 1, It is characterized in that The connecting body (2) is vertically arranged in the box body (1), a plurality of connectors (21) are arranged on one side and / or both sides of the connecting body (2), and the battery (3) is horizontally arranged in the box body (1).

3. The energy storage device according to claim 1, It is characterized in that The connecting body (2) is arranged transversely in the box body (1), the connector (21) is arranged on the top surface and / or the bottom surface of the connecting body (2), and the battery (3) is arranged vertically in the box body (1).

4. The energy storage device according to claim 3, It is characterized in that The connecting body (2) is located at the bottom of the box (1), the connector (21) is arranged on the top surface of the connecting body (2), and the battery (3) is arranged vertically above the connecting body (2); Alternatively, the connecting body (2) is located on the top of the box body (1), the connector (21) is arranged on the bottom surface of the connecting body (2), and the battery (3) is arranged vertically below the connecting body (2).

5. The energy storage device according to any one of claims 1 to 4, It is characterized in that The box (1) has an opening, and the energy storage device further comprises a capture mechanism (4). The capture mechanism (4) has a first use state and a second use state. In the first use state, the capture mechanism (4) and the box (1) are connected to seal the opening. In the second use state, the battery (3) ejected from the box (1) pushes the capture mechanism (4) and the box (1) to separate, so that the battery (3) is captured in the capture mechanism (4).

6. The energy storage device according to claim 5, It is characterized in that The area of ​​the capture mechanism (4) is larger than the area of ​​the opening.

7. The energy storage device according to claim 6, It is characterized in that The opening is arranged on the side of the box body (1), and the capture mechanism (4) is arranged on the side of the box body (1); Alternatively, the opening is arranged at the top of the box (1), and the capture mechanism (4) is arranged at the top of the box (1); And / or, the capture mechanism (4) is an explosion-proof cloth.

8. The energy storage device according to any one of claims 1 to 4, It is characterized in that The connector (21) is provided with a first quick-plug connector (211) and a second quick-plug connector (212); the battery (3) is provided with a positive pole (31) and a negative pole (32); the positive pole (31) and the first quick-plug connector (211) are plugged in and matched, and the negative pole (32) and the second quick-plug connector (212) are plugged in and matched.

9. The energy storage device according to any one of claims 1 to 4, It is characterized in that The energy storage device also includes a cooling system, and the cooling system is used to cool the battery (3).

10. The energy storage device according to claim 9, It is characterized in that The cooling system comprises: A first cooling mechanism connected to the interior of the battery (3) and used to cool the interior of the battery (3); And / or, a second cooling mechanism is arranged in the box (1) and is used to cool the outside of the battery (3).

11. The energy storage device according to claim 10, It is characterized in that The first cooling mechanism comprises a cooling cavity arranged in the battery (3) and a liquid inlet quick plug connector (213) and a liquid outlet quick plug connector (214) arranged on the connector (21); the cooling cavity has a liquid inlet interface (33) and a liquid outlet interface (34); the liquid inlet interface (33) and the liquid inlet quick plug connector (213) are plugged in and matched, and the liquid outlet interface (34) and the liquid outlet quick plug connector (214) are plugged in and matched.

12. The energy storage device according to claim 10, It is characterized in that The second cooling mechanism is a liquid cooling plate (6) or a cooling bag, and the liquid cooling plate (6) or the cooling bag is arranged at the bottom of the plurality of batteries (3) or between two adjacent batteries (3); Alternatively, when the battery (3) is vertically arranged below the connector (2), the second cooling mechanism is a cooling liquid (100) filled in the box (1), the cooling liquid (100) immerses the battery (3), and the height of the cooling liquid (100) is lower than the height of the connector (2).

13. The energy storage device according to any one of claims 1 to 4, It is characterized in that The energy storage device also includes: A support frame (5), arranged in the box body (1) and used for supporting the battery (3); And / or, an installation base (7) is arranged at the bottom of the box body (1) and is suitable for installation on the ground (200) or in a foundation pit (300) of the ground (200).

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