Sectionalizer, energy storage device and electric equipment

Abstract

The utility model discloses a sectionalizer, an energy storage device and electric equipment, the sectionalizer comprises a first connecting end and a second connecting end, the first connecting end is suitable for being connected with a first battery module, the second connecting end is suitable for being connected with a second battery module, and the first connecting end and the second connecting end are suitable for forming electrical connection or electrical disconnection. The problem that an energy storage device is poor in safety is solved.

Description

Technical Field

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

[0002] In order to achieve high energy density, most existing energy storage devices (battery cabinets) are equipped with a large number of battery modules, and the battery modules are connected in series. Since the battery modules are charged during the installation, maintenance and transportation of the energy storage device, if the staff touches the positive and negative poles of the battery modules, it will cause a serious safety accident. Therefore, how to reduce the high risk of energy storage devices during installation, maintenance and transportation has become the key. Utility Model Content

[0003] The utility model aims to provide a sectioner, an energy storage device and an electrical device to solve the problem of poor safety of the energy storage device.

[0004] In order to achieve the purpose of the utility model, the utility model provides the following technical solutions:

[0005] In a first aspect, the present application provides a segmenter, comprising a first connection end and a second connection end, wherein the first connection end is suitable for connecting to a first battery module, the second connection end is suitable for connecting to a second battery module, and the first connection end and the second connection end are suitable for forming electrical conduction or electrical disconnection.

[0006] In one embodiment, at least a portion between the first connection end and the second connection end is deformable.

[0007] In one embodiment, the segmenter includes a first connecting member and a second connecting member, the first connecting member includes the first connecting end, the second connecting member includes the second connecting end, and the first connecting member and the second connecting member are detachably connected.

[0008] In one embodiment, the first connecting member includes a first flexible segment, the first flexible segment is connected to the first connecting end, and the first flexible segment is deformable; or, the second connecting member includes a second flexible segment, the second flexible segment is connected to the second connecting end, and the second flexible segment is deformable.

[0009] In one embodiment, the segmenter further includes a third connecting member, the first connecting member and the second connecting member are connected via the third connecting member, the first connecting member and the third connecting member are detachably connected, and / or the second connecting member and the third connecting member are detachably connected.

[0010] In one embodiment, the segmenter further includes a fuse, and the fuse is arranged on the first connecting member, the second connecting member, or the third connecting member.

[0011] In one embodiment, the fuse is arranged on the third connecting member, the third connecting member includes a first section and a second section, the two opposite ends of the fuse are respectively connected to the first section and the second section, the first section is connected to the first connecting member, and the second section is connected to the second connecting member.

[0012] In a second aspect, the present application provides an energy storage device, comprising a cabinet, a battery module and the segmenter described in the first aspect, wherein the cabinet is arranged to form a receiving cavity; the battery module is received in the receiving cavity; the segmenter is received in the receiving cavity and is electrically connected to the battery module.

[0013] In one embodiment, the cabinet includes a partition plate assembly, which is arranged in the receiving cavity and divides the receiving cavity to form a first cavity and a second cavity, and the battery module is accommodated in the second cavity; the segmenter is at least partially penetrated through the partition plate assembly and accommodated in the first cavity.

[0014] In one embodiment, the first cavity meets the waterproof grade of IP65, and the second cavity meets the waterproof grade of IP67.

[0015] In one embodiment, the cabinet includes a front door assembly, a rear door assembly and a frame assembly, the front door assembly and the frame assembly are connected in an openable and closable manner, the front door assembly and the partition plate assembly are arranged relative to each other, the front door assembly, the partition plate assembly and the frame assembly enclose the first cavity, the rear door assembly and the frame assembly are sealingly connected, the rear door assembly and the partition plate assembly are arranged relative to each other, and the rear door assembly, the partition plate assembly and the frame assembly enclose the second cavity.

[0016] In one embodiment, a plurality of the battery modules are connected in series to form a battery module group, the number of the battery module groups is multiple, the number of the segmenters is multiple, and two of the battery module groups are connected in series via the segmenter.

[0017] In one embodiment, a plurality of the segmenters are sequentially arranged along the height direction of the cabinet, and the upper side of the cabinet is a positive electrode interface, and the lower side of the cabinet is a negative electrode interface.

[0018] In one embodiment, the number of the sectionalizers is three or more, and the sectionalizer further includes a fuse. Along the height direction of the cabinet, the fuse is arranged on the sectionalizer between the two outermost sectionalizers.

[0019] In a third aspect, the present application further provides an electrical device, including the segmenter described in the first aspect, or including an electrical device and the energy storage device described in the second aspect, wherein the energy storage device supplies power to the electrical device.

[0020] The utility model provides a segmenter in the battery module of the energy storage device, uses the segmenter to connect at least two battery modules in series, and the segmenter includes a first connection end and a second connection end, the first connection end and the second connection end are respectively connected to the first battery module and the second battery module, and the first connection end and the second connection end are suitable for forming electrical conduction or electrical disconnection, so that during the assembly or maintenance of the energy storage device, the first connection end and the second connection end are controlled to be disconnected, thereby protecting the safety of the installation staff; and during the dynamic transportation of the energy storage device, the electrical connection between the first connection end and the second connection end can also be disconnected first to avoid the risk of high-voltage short circuit in live transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only 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.

[0022] Figure 1 is an appearance diagram of an energy storage device according to an embodiment;

[0023] Figure 2 is an exploded view of an energy storage device in one embodiment;

[0024] Figure 3 is an internal view of a cabinet according to an embodiment;

[0025] Figure 4 is an appearance diagram of a segmenter according to an embodiment;

[0026] Figure 5 is a structural diagram of a partition plate assembly in a cabinet according to an embodiment;

[0027] Figure 6 is a diagram of the internal structure of a cabinet in one embodiment;

[0028] Figure 7 is an appearance diagram of a sectionalizer combined with a fuse in one embodiment;

[0029] Figure 8 The figure is a connection diagram of a battery module and a BMS according to an embodiment.

[0030] Description of reference numerals:

[0031] 1-cabinet, 2-battery module, 11-housing, 11A-receiving cavity, 11B-first cavity, 11C-second cavity, 1A-front door assembly, 1B-frame assembly, 1C-rear door assembly, 12-partition plate assembly, 121-wire connection port, 3-segmenter, 31-first connector, 311A-connector one, 311B-connector two, 312-flexible copper busbar one, 313-first section, 314-second section, 32-second connector, 321A-connector three, 321B-connector four, 322-flexible copper busbar two, 33-third connector, 331A-connector five, 331B-connector six, 332-flexible copper busbar three, 4-fuse. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0034] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meaning as those commonly understood by technicians in the technical field of this utility model. The terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used in this utility model includes any and all combinations of one or more related listed items.

[0035] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0036] BMS: The battery system is commonly known as a battery nanny or battery butler. Its main function is to intelligently manage and maintain each battery unit, monitor the battery status, prevent the battery from overcharging and over-discharging, and extend the battery life.

[0037] The utility model provides an energy storage device, which uses the principle of mechanical segmentation and / or fuse segmentation to increase the circuit-breaking protection caused by short circuit on the BMS input side. The first purpose of segmentation is to avoid the risk of high-voltage short circuit in live transportation greater than DC 240V during dynamic transportation; secondly, a protective fuse is added on the battery module group side to increase safety during transportation or operation.

[0038] In one implementation, please refer to Figures 1 to 3 The energy storage device includes a cabinet 1, multiple battery modules 2 and a segmenter 3, wherein the cabinet 1 encloses a receiving cavity 11A; the multiple battery modules 2 are arranged in the receiving cavity 11A; at least two battery modules 2 are connected in series through the segmenter 3, and the segmenter 3 includes a first connection end and a second connection end, the first connection end is used for detachable connection with the first battery module, and the second connection end is used for detachable connection with the second battery module, and the first connection end and the second connection end are suitable for forming electrical conduction or electrical disconnection.

[0039] Specifically, the cabinet 1 is used to store batteries and other electrical components connected to the batteries. Optionally, the cabinet 1 can be in a hexahedral shape, including a bottom surface and a top surface facing each other, and a left surface and a right surface facing each other, as well as a front surface and a back surface facing each other. The cabinet 1 includes a length direction, a width direction and a height direction. As shown in the figure, the length direction and the width direction define the bottom surface and the top surface of the energy storage device, the width direction and the height direction define the left and the right side of the energy storage device, and the length direction and the height direction define the front and the back side of the energy storage device. The length direction, the width direction and the height direction involved below all take the cabinet 1 as a reference.

[0040] Optionally, the cabinet 1 includes a shell 11, which is a hexahedral shape and includes a bottom plate, a top plate, a left side plate, a right side plate, a front plate and a back plate; wherein the bottom plate includes the bottom surface, the top plate includes the top surface, the left side plate includes the left surface, the right side plate includes the right surface, the front plate includes the front surface, and the back plate includes the back surface. The cabinet door of the cabinet 1 can be at least one of the left side plate, the right side plate, the front plate and the back plate.

[0041] A plurality of battery modules 2 are disposed in the receiving cavity 11A. The plurality of battery modules 2 may be connected in series, and at least two battery modules 2 may be connected in series via a segmenter 3 .

[0042] The segmenter 3 may include a first connection end and a second connection end that are separated from each other, and the segmenter 3 may be an integrated structure. The plurality of battery modules 2 include a first battery module and a second battery module, wherein the first connection end is connected to the first battery module, and the second connection end is connected to the second battery module. When the energy storage device is working, the first connection end is electrically connected to the first battery module, and the second connection end is electrically connected to the second battery module; when not working, the first connection end or the second connection end may not be electrically connected to the corresponding battery module 2.

[0043] The first connection end and the second connection end are suitable for forming electrical conduction or electrical disconnection. Specifically, a break or a passage can be formed between the first connection end and the second connection end, and the methods of forming a break or an open circuit include but are not limited to mechanical disconnection, magnetic disconnection, electrical signal blocking, etc., without specific limitation.

[0044] The utility model sets a segmenter 3 in the battery module 2 of the energy storage device, connects at least two battery modules 2 in series by using the segmenter 3, and the segmenter 3 includes a first connection end and a second connection end, the first connection end and the second connection end are respectively connected to the first battery module and the second battery module, and the first connection end and the second connection end are suitable for forming electrical conduction or electrical disconnection, so that during the assembly or maintenance of the energy storage device, the first connection end and the second connection end are controlled to be disconnected, thereby protecting the safety of the installation staff; and during the dynamic transportation of the energy storage device, the electrical connection between the first connection end and the second connection end can also be disconnected first to avoid the risk of high-voltage short circuit in live transportation.

[0045] In one embodiment, at least a portion between the first connection end and the second connection end is deformable. Specifically, the first connection end and the second connection end may be flexibly connected. For example, the first connection end and the second connection end may be connected via a conductive connection segment, which is made of a flexible and deformable material, and the conductive connection segment may be a metal connection segment.

[0046] In one embodiment, the segmenter includes a first connecting member 31 and a second connecting member 32 , the first connecting member 31 includes a first connecting end, the second connecting member 32 includes a second connecting end, and the first connecting member 31 and the second connecting member 32 are detachably connected.

[0047] The segmenter 3 includes a first connector 31 and a second connector 32 , wherein the first connector 31 is connected to one battery module 2 (a first battery module), and the second connector 32 is connected to another battery module 2 (a second battery module).

[0048] Optional, please refer to Figure 4, the first connector 31 may include a connector 1 311A, a connector 2 311B and a flexible copper busbar 1 312 (i.e., the conductive connecting section mentioned above), and the second connector 32 may include a connector 3 321A, a connector 4 321B and a flexible copper busbar 2 322. The connector 1 311A ​​and the connector 2 311B are respectively arranged at two opposite ends of the flexible copper busbar 1 312, the connector 3 321A and the connector 4 321B are also respectively arranged at two opposite ends of the flexible copper busbar 2 322, the connector 1 311A ​​may be connected to the battery module 2, the connector 2 311B may be detachably connected to the connector 3 321A, and the connector 4 321B may be connected to another battery module 2.

[0049] It should be explained that connector 1 311A ​​can be the first connection end mentioned above, and connector 4 321B can be the second connection end mentioned above.

[0050] The segmenter 3 is connected by a flexible copper busbar to avoid disconnection or local temperature rise caused by connection failure due to stress on the rigid connection during transportation or use after the quick insertion is completed.

[0051] The utility model provides a segmenter 3 in the battery module 2 of the energy storage device, uses the segmenter 3 to connect at least two battery modules 2 in series, and the segmenter 3 includes a first connector 31 and a second connector 32 that are detachably connected, so that during the assembly or maintenance of the energy storage device, the first connector 31 and the second connector 32 are controlled to be disconnected to protect the safety of the installation staff; and during the dynamic transportation of the energy storage device, the connection between the first connector 31 and the second connector 32 can also be disconnected first to avoid the risk of high-voltage short circuit in live transportation.

[0052] In one embodiment, the first connector and / or the second connector are at least partially deformable. Specifically, the flexible copper bar 1 312 or the flexible copper bar 2 322 mentioned above can be a flexible and deformable metal piece, such as bending, winding, etc.

[0053] In one embodiment, the first connector includes a first flexible segment, the first flexible segment is connected to the first connection end, and the first flexible segment is deformable; or the second connector includes a second flexible segment, the second flexible segment is connected to the second connection end, and the second flexible segment is deformable. Specifically, the first flexible segment is the flexible copper busbar 1 312, and the second flexible segment is the flexible copper busbar 2 322.

[0054] In one implementation, please refer to Figure 3 and Figure 4 The segmenter 3 further includes a third connecting member 33, the first connecting member 31 and the second connecting member 32 are connected via the third connecting member 33, the first connecting member 31 and the third connecting member 33 are detachably connected, and / or the second connecting member 32 and the third connecting member 33 are detachably connected.

[0055] Specifically, a first connector 31, a third connector 33, and a second connector 32 are sequentially connected between the two battery modules 2, wherein the first connector 31 is connected to the first battery module, and the second connector 32 is connected to the second battery module. In addition, the first connector 31 and the third connector 33 are detachably connected, that is, the first connector 31 and the third connector 33 can be disconnected; the second connector 32 and the third connector 33 are detachably connected, that is, the second connector 32 and the third connector 33 can be disconnected.

[0056] Optionally, the third connector 33 may include a fifth connector 331A, a sixth connector 331B and a third flexible copper busbar 332. The fifth connector 331A and the sixth connector 331B are respectively arranged at two opposite ends of the third flexible copper busbar 332, the second connector 311B may be detachably connected to the fifth connector 331A, the third connector 321A may be detachably connected to the sixth connector 331B, and the fourth connector 321B may be connected to another battery module 2.

[0057] Optionally, the above connectors may all be quick-connect connectors.

[0058] In one embodiment, at least a portion of any one of the first connector 31, the second connector 32 and the third connector 33 is flexible and deformable. Specifically, based on the above embodiment, the first connector 31, the second connector 32 and the third connector 33 all have flexible copper bars (flexible copper bar one 312, flexible copper bar two 322 and flexible copper bar three 332), or at least one of the three connections has a flexible copper bar. The flexible copper bar has high mechanical properties, good electrical conductivity, thermal conductivity, excellent corrosion resistance, electroplating, and brazing properties, and also has excellent deformability (including bending, winding, curling, etc.), and compared with other metal connecting sections, the flexible copper bar has a beautiful metallic luster and good forming and processing performance.

[0059] In other embodiments, the first connector 31, the second connector 32 and the third connector 33 may also adopt other flexible connection forms, including but not limited to metal copper cables, metal power strips, etc. It can be understood that the main purpose of the above-mentioned flexible connection form is to allow any one of the first connector 31, the second connector 32 and the third connector 33 to be deformed during the installation process, so as to adapt to more application environments. The three connectors are designable and can be deformed into the required shape according to different environmental needs and realize the function of electrical conduction.

[0060] In one implementation, please refer to Figure 7The segmenter further includes a fuse 4 , which is disposed on the first connecting member 31 , the second connecting member 32 , or the third connecting member 33 .

[0061] Specifically, the fuse 4 may be disposed on the flexible copper busbar, specifically, may be disposed on the flexible copper busbar of the third connector 33 , or may be disposed on the flexible copper busbar of the first connector 31 or the second connector 32 .

[0062] The benefit of setting the fuse 4 on the segmenter 3 is to improve the safety level. For example, during the operation of the energy storage device, if a short circuit occurs somewhere at the BMS input end, the protection unit of the BMS needs to work to disconnect the circuit. The entire battery module group and its input cables are at risk of protection, and the staff working at the front end of the BMS input will be at risk of electric shock. When the fuse 4 is set on the segmenter 3, when the staff works at the front end of the BMS input, the fuse 4 is triggered to disconnect at the moment of short circuit, thereby disconnecting the circuit in the battery module 2, avoiding safety accidents and improving safe operation.

[0063] In one implementation, please refer to Figure 7 The fuse 4 is arranged on the third connecting member 33 , and the third connecting member 33 includes a first section 313 and a second section 314 . The two opposite ends of the fuse 4 are respectively connected to the first section 313 and the second section 314 . The first section 313 is connected to the first connecting member 31 , and the second section 314 is connected to the second connecting member 32 .

[0064] Specifically, the flexible copper busbar on the third connector 33 includes a first section 313 and a second section 314, and the two opposite ends of the fuse 4 are respectively connected to the first section 313 and the second section 314. The first section 313 is connected to the second connector 311B of the first connector 31 through the fifth connector 331A, and the second section 314 is connected to the third connector 321A of the second connector 32 through the sixth connector 331B.

[0065] Both the first section 313 and the second section 314 use flexible copper busbars for transition to avoid connection failure and circuit breaking due to rigid stress or temperature rise caused by local poor contact. Fuse 4 allows a sudden high voltage to burn fuse 4 during the short-circuit process, thereby disconnecting the circuit. If the energy storage device fails during transportation, fuse 4 in the BMS will short-circuit and cut off the power supply of the entire battery cabinet. However, when repair personnel or other people are repairing, because the battery module 2 is not powered off, if the hand touches the BMS input terminal (the positive and negative poles of the battery module 2), there is still a risk of electric shock. This solution ensures that if a fault occurs, the fuse 4 between the battery modules 2 cuts off the circuit of the battery module 2.

[0066] In one implementation, please refer to Figure 5 and Figure 6The energy storage cabinet also includes a partition plate assembly 12, which is arranged in the receiving cavity 11A and divides the receiving cavity 11A into a first cavity 11B and a second cavity 11C. The battery module 2 is arranged in the second cavity 11C, and the segmenter 3 is at least partially penetrated through the partition plate assembly 12 and received in the first cavity 11B.

[0067] Specifically, the partition plate assembly 12 is disposed in the receiving cavity 11A, and separates the receiving cavity 11A to form a first cavity 11B and a second cavity 11C. The partition plate assembly 12 can be vertically disposed in the receiving cavity 11A, so as to separate the receiving cavity 11A to form two cavities in front and back (or left and right). It can be understood that the partition plate assembly 12 is connected to the top plate and the bottom plate at the upper and lower ends in the height direction, respectively, and is connected to the left plate and the right plate at the two ends in the width direction (or the front plate and the back plate are connected at the two ends in the length direction, respectively).

[0068] Optionally, the partition plate assembly 12 includes a welding partition and a partition plate, wherein the welding partition layer is connected to the inner wall of the outer shell 11 in a ring shape, and the metal sheet of the partition plate is connected to the welding partition layer.

[0069] Optionally, the front panel of the housing 11 is a cabinet door, and is connected to the cabinet body in an openable and closable manner, and the partition plate assembly 12 is arranged in parallel with the back panel, that is, the two ends of the partition plate assembly 12 in the width direction are respectively connected to the left panel and the right panel. Alternatively, the front panel of the housing 11 is a cabinet door, and the partition plate assembly 12 is arranged in parallel with the left panel and the right panel, that is, the two ends of the partition plate assembly 12 in the length direction are respectively connected to the front panel and the back panel.

[0070] Optionally, the volumes of the first cavity 11B and the second cavity 11C are different, and the volume of the second cavity 11C may be larger than the volume of the first cavity 11B. It should be explained that the reason why the second cavity 11C has a larger volume is that it can accommodate more batteries, thereby increasing the energy density of the energy storage device.

[0071] Optionally, the housing 11 includes a front door assembly 1A, a rear door assembly 1C and a frame assembly 1B, the front door assembly 1A and the frame assembly 1B are openably connected, the rear door assembly 1C and the frame assembly 1B are sealed and connected, and the front door assembly 1A and the rear door assembly 1C are arranged relative to each other.

[0072] Specifically, the front door assembly 1A includes the front panel mentioned above, the rear door assembly 1C includes the back panel mentioned above, and the frame assembly 1B includes the left side panel and the right side panel mentioned above.

[0073] In one embodiment, the front door assembly 1A and the frame assembly 1B are connected in an openable manner, that is, the left side of the front door assembly 1A is rotatably connected to the left side panel via a door hinge. The rear door assembly 1C and the frame assembly 1B are sealed and connected, and the rear door assembly 1C and the frame assembly 1B can be detachably connected, assembled via a connector, and sealed via a seal. In this way, the second cavity 11C has IP67 protection.

[0074] In one embodiment, the first cavity 11B meets the waterproof grade IP65, and the second cavity 11C meets the waterproof grade IP67.

[0075] The cabinet 1 is divided into a front door assembly 1A, a frame assembly 1B, and a rear door assembly 1C, and a partition assembly 12 is designed in the middle of the frame assembly 1B to separate the first cavity 11B and the second cavity 11C, and the cavities are arranged in parallel in the front and back directions. The first cavity 11B is used to place units that do not require high protection and their user-side on-site maintenance and operation units. The second cavity 11C is used to place the battery module 2. The second cavity 11C is a unit that does not require or rarely requires maintenance at the user's site, meets the protection IP67 level, and avoids arcing and short circuits caused by high humidity, high salt fog, and high pollution environments that affect the safety regulations of the battery module 2.

[0076] In one implementation, please refer to Figures 3 to 5 The first connecting member 31 passes through the partition plate assembly 12 , and the second connecting member 32 is disposed in the first cavity 11B and connected to the first connecting member 31 passing through the partition plate assembly 12 .

[0077] Specifically, the partition plate assembly 12 is provided with a wire connection port 121, which is specifically a welding barrier of the partition plate assembly 12. The first connector 31A and the flexible copper busbar are accommodated in the second cavity 11C. The second connector 311B is passed through the wire connection port 121. The second connector 32 is accommodated in the first cavity 11B and connected to the second connector 311B. Therefore, it can be understood that the two battery modules 2 connected in series are both arranged in the second cavity 11C, but the second connector 32 used to connect the battery modules 2 in series is arranged in the first cavity 11B, so the staff can open the first cavity 11B and remove the second connector 32 to provide circuit breaker protection for the battery modules 2 in the second cavity 11C.

[0078] In one implementation, please refer to Figure 8 A plurality of battery modules 2 are connected in series to form a battery module group. The number of battery module groups is multiple, the number of segmenters 3 is multiple, and two battery module groups are connected in series through the segmenter 3 .

[0079] Specifically, as shown in the figure, a battery pack structure is set in the second cavity 11C of the energy storage device, and the battery modules 2 in the battery pack adopt a series structure. It includes 16 battery module groups connected in series, and the 16 battery module groups are arranged in sequence along the height direction, so it can be considered that there are 16 layers of battery modules 2 in the cabinet 1, and each battery module group has 226 battery modules connected in series. The standard voltage of each battery module 2 can be 3.2V, so the voltage of a single-layer battery module group is 26*3.2=83.2V, so the voltage of the energy storage device is 16*83.2=1331.2V.

[0080] Of course, in other embodiments, the number of battery module groups may be more or less, and the number of battery modules 2 in each battery module group may be more or less, without specific limitation.

[0081] In one implementation, please refer to Figures 1 to 3 Along the height direction of the cabinet, multiple segmenters 3 are arranged in sequence, and the upper side of the cabinet 1 is the positive electrode interface, and the lower side of the cabinet 1 is the negative electrode interface.

[0082] Specifically, the partition plate assembly 12 is provided with a plurality of wire connection ports 121, which are all arranged on the right side of the partition plate assembly 12 and arranged in sequence along the height direction of the cabinet 1. Because the right side of the partition plate assembly 12 is the door opening side, the wire connection ports 121 are arranged here for easy maintenance, replacement or disconnection of the wires.

[0083] Optionally, a second connecting member 32 is disposed between two adjacent wire connecting ports 121 to connect to the first connecting member 31 on the corresponding wire connecting port 121 .

[0084] Optionally, based on the above embodiment, a 16-layer battery module group is provided, wherein the total positive electrode interface is designed on the 16th layer, and the total negative electrode interface is designed on the 1st layer, and the total positive electrode interface and the total negative electrode interface are negatively connected to the BMS input terminal of the first cavity 11B through cables or copper busbars, and then connected to the external output of the energy storage device through the BMS.

[0085] In one implementation, please refer to Figures 1 to 3 and Figure 8 The number of the sectionalizers 3 is three or more, and along the height direction of the cabinet, the fuse 4 is arranged on the sectionalizer 3 between the two outermost sectionalizers 3 .

[0086] Specifically, the number of the sectionalizers 3 may be three or more, and they are arranged in sequence along the height direction. Among them, the sectionalizer 3 combined with the fuse 4 may be arranged in the middle.

[0087] Optionally, based on the above embodiment, the number of segmenters 3 is three, and one of the segmenters 3 is combined with a fuse 4. The single segmenters 3 are respectively arranged between the fourth and fifth layers, between the eighth and ninth layers, and between the twelfth and thirteenth layers, and the segmenter 3 combined with the fuse 4 is arranged between the eighth and ninth layers.

[0088] Of course, in other embodiments, the segmenter 3 can also be arranged between the other two layers, and the segmenter 3 can be combined with the fuse 4, that is, the number of design layers of the fuse 4 is not limited. One purpose of segmentation is to avoid the risk of high-voltage short circuit in live transportation greater than DC 450V during dynamic transportation; secondly, adding the fuse 4 in the middle layer increases safety during transportation or operation.

[0089] In one embodiment, the utility model further provides an electrical equipment, including an electrical device and an energy storage device, wherein the energy storage device supplies power to the electrical device.

[0090] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship of the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does 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.

[0091] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A segmenter, characterized in that: The segmenter includes a first connection end and a second connection end, wherein the first connection end is suitable for connecting to a first battery module, and the second connection end is suitable for connecting to a second battery module, and the first connection end and the second connection end are suitable for forming electrical conduction or electrical disconnection.

2. The segmenter according to claim 1, characterized in that: At least a portion between the first connection end and the second connection end is deformable.

3. The segmenter according to claim 1 or 2, characterized in that: The segmenter includes a first connecting member and a second connecting member, the first connecting member includes the first connecting end, the second connecting member includes the second connecting end, and the first connecting member and the second connecting member are detachably connected.

4. The segmenter according to claim 3, characterized in that: The first connecting member includes a first flexible segment, the first flexible segment is connected to the first connecting end, and the first flexible segment is deformable; or, The second connecting member includes a second flexible segment, the second flexible segment is connected to the second connecting end, and the second flexible segment is deformable.

5. The segmenter according to claim 3, characterized in that: The segmenter further includes a third connecting member, the first connecting member and the second connecting member are connected via the third connecting member, the first connecting member and the third connecting member are detachably connected, and / or the second connecting member and the third connecting member are detachably connected.

6. The segmenter according to claim 5, characterized in that: The sectioner further includes a fuse, and the fuse is arranged on the first connecting member, the second connecting member, or the third connecting member.

7. The segmenter according to claim 6, characterized in that: The fuse is arranged on the third connecting member, the third connecting member includes a first section and a second section, two opposite ends of the fuse are respectively connected to the first section and the second section, the first section is connected to the first connecting member, and the second section is connected to the second connecting member.

8. An energy storage device, characterized in that: include: The cabinet body is surrounded to form a receiving cavity; A battery module is housed in the housing cavity; The segmenter according to any one of claims 1 to 7 is accommodated in the accommodating cavity and electrically connected to the battery module.

9. The energy storage device according to claim 8, characterized in that: The cabinet includes a partition plate assembly, which is arranged in the receiving cavity and divides the receiving cavity into a first cavity and a second cavity, and the battery module is received in the second cavity; the segmenter is at least partially passed through the partition plate assembly and received in the first cavity.

10. The energy storage device according to claim 9, characterized in that: The first cavity meets the waterproof grade of IP65, and the second cavity meets the waterproof grade of IP67.

11. The energy storage device according to claim 9, characterized in that: The cabinet body includes a front door assembly, a rear door assembly and a frame assembly, the front door assembly and the frame assembly are connected in an openable and closable manner, the front door assembly and the partition plate assembly are arranged relative to each other, the front door assembly, the partition plate assembly and the frame assembly enclose the first cavity, the rear door assembly and the frame assembly are sealingly connected, the rear door assembly and the partition plate assembly are arranged relative to each other, and the rear door assembly, the partition plate assembly and the frame assembly enclose the second cavity.

12. The energy storage device according to claim 8, characterized in that: A plurality of the battery modules are connected in series to form a battery module group. The number of the battery module groups is multiple, the number of the segmenters is multiple, and two of the battery module groups are connected in series via the segmenter.

13. The energy storage device according to claim 12, characterized in that: Along the height direction of the cabinet, a plurality of the segmenters are arranged in sequence, and the upper side of the cabinet is the positive electrode interface, and the lower side of the cabinet is the negative electrode interface.

14. The energy storage device according to claim 12, characterized in that: The number of the sectionalizers is three or more, and the sectionalizer further includes a fuse. Along the height direction of the cabinet, the fuse is arranged on the sectionalizer between the two outermost sectionalizers.

15. An electrical equipment, characterized in that: It comprises a segmenter as described in any one of claims 1 to 7, or comprises an electric device and an energy storage device as described in any one of claims 8 to 14, wherein the energy storage device supplies power to the electric device.

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