Combiner cabinet and energy storage system

Abstract

The present application provides a combiner cabinet and an energy storage system. The combiner cabinet comprises: a cabinet body and a cabinet door, wherein the cabinet body has a mounting cavity, the cabinet door is connected to the cabinet body, the cabinet body comprises a first side wall arranged opposite to the cabinet door, and the arrangement direction of the cabinet door and the first side wall is a first direction; and an electrical component assembly mounted in the mounting cavity, wherein the electrical component assembly comprises a positive electrode portion and a negative electrode portion arranged spaced from each other, and the positive electrode portion and the negative electrode portion are arranged in the first direction.

Description

Busbar cabinet and energy storage system

[0001] The present application claims priority to the Chinese patent application No. 202421848659.8, filed on July 31, 2024, to the Chinese Patent Office, the whole content of the above application being incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of energy storage, in particular to a busbar cabinet and an energy storage system. BACKGROUND

[0003] In the related art, the busbar cabinet is often used as a bridge for connecting the battery pack and the external, and the battery pack is connected to the external through the busbar cabinet

[0004] The busbar cabinet can be charged and discharged. SUMMARY

[0005] In the related art, a large number of electrical elements are often included in the busbar cabinet, and the large number of electrical elements are often arranged as a layer along the length direction of the busbar cabinet, the distance between the electrical elements at both ends is far, the wiring distance required between the electrical elements is long, and the operation of the staff is inconvenient.

[0006] The present application provides a busbar cabinet. The busbar cabinet comprises:

[0007] A cabinet body and a cabinet door, the cabinet body is provided with a mounting cavity, the cabinet door is connected to the cabinet body to cover or expose the mounting cavity, the cabinet body comprises a first side wall arranged opposite to the cabinet door, and the arrangement direction of the cabinet door and the first side wall is a first direction; an electrical element assembly installed in the mounting cavity, the electrical element assembly comprises a positive electrode part and a negative electrode part arranged at intervals, the positive electrode part is configured to be electrically connected to a positive electrode output end of an external high-voltage box and electrically connected to a positive electrode of a battery pack; the negative electrode part is configured to be electrically connected to a negative electrode output end of the external high-voltage box and electrically connected to a negative electrode of the battery pack, and the positive electrode part and the negative electrode part are arranged along the first direction.

[0008] The present application also provides an energy storage system. The energy storage system comprises the busbar cabinet according to any one of the above. ADVANTAGEOUS EFFECTS

[0009] The busbar cabinet provided by the present application has the following advantages: the arrangement direction of the cabinet door and the first side wall is the first direction, the electrical element assembly is arranged in the mounting cavity, and the positive electrode part and the negative electrode part of the electrical element assembly are arranged along the first direction, so that the distance between the electrical elements at both ends is short, the wiring distance required between the electrical elements is short, and the staff is convenient to operate.

[0010] The energy storage system provided by the present application adopts the busbar cabinet, the distance between the electrical elements at both ends is short, the wiring distance required between the electrical elements is short, and the staff is convenient to operate. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 is an exploded view of the busbar cabinet provided by the present application;

[0012] Fig. 2 is a structural schematic view of the layer plate in Fig. 1;

[0013] Fig. 3 is a circuit schematic diagram of the busbar cabinet provided by the present application;

[0014] Fig. 4 is a perspective view of the busbar cabinet provided by the present application from a first angle with the cabinet door removed;

[0015] Fig. 5 is a perspective view of the busbar cabinet provided by the present application from a second angle with the cabinet door removed;

[0016] Fig. 6 is a structural schematic view of the cabinet door in Fig. 1;

[0017] Fig. 7 is a perspective view of the busbar cabinet provided by the present application from a third angle with the cabinet door removed;

[0018] Fig. 8 is a perspective view of the busbar cabinet provided by the present application from a fourth angle with the cabinet door removed;

[0019] Fig. 9 is a perspective view of the busbar cabinet provided by the present application from a fifth angle with the cabinet door removed.

[0020] Explanation of reference signs:

[0021] 10, cabinet body; 11, cabinet door; 12, installation cavity; 121, first installation cavity; 123, second installation cavity; 1211, first installation space; 1213, second installation space; 13, first side wall; 14, electrical component assembly; 15, second side wall; 17, third side wall; 18, top wall; 19, bottom wall; 1010, air outlet; 1030, air inlet; 20, layer plate; 21, first layer plate; 23, second layer plate; 25, third layer plate; 31, BMS control; 33, signal relay; 35, air switch; 36, line slot; 37, terminal; 38, AC / DC power supply; 40, first operation module; 41, indicator light module; 411, operation indicator light; 413, fault indicator light; 415, closing indicator light; 412, over-temperature indicator light; 414, 24V voltage indicator light; 416, SOC low indicator light; 43, switch module; 431, remote / local control switch; 433, start / stop control switch; 435, mute control switch; 437, emergency stop switch; 45, buzzer; 47, display module; 50, second operation module; 60, warning module; 601, first filter screen; 602, second filter screen; 603, insulating plate; 70, positive electrode part; 71, positive fuse; 72, positive high-voltage relay; 73, positive electrode interface; 74, circuit breaker; 741, first circuit breaker; 743, second circuit breaker; 701, first copper bar; 75, cluster high-voltage positive electrode connection copper bar; 76, cluster high-voltage positive electrode to circuit breaker copper bar; 77, circuit breaker to output positive copper bar; 80, negative electrode part; 801, second copper bar; 81, negative fuse; 82, negative high-voltage relay; 83, negative electrode interface; 85, cluster high-voltage negative electrode connection copper bar; 86, cluster high-voltage negative electrode to circuit breaker copper bar; 87, circuit breaker to output negative copper bar; 90, incoming line port; 91, pre-charge resistor; 100, control part; 101, first sub-control part; 103, second sub-control part; 200, adjustment indication part; 300, auxiliary power part; 301, auxiliary power positive fuse; 303, auxiliary power negative fuse; 305, auxiliary power positive electrode interface; 307, auxiliary power negative electrode interface; 400, surge protection part;

[0022] 401, first surge fuse; 405, surge protector; 403, second surge fuse. Embodiments of the present application

[0023] Please refer to FIG. 1, the busbar cabinet in the embodiment of the present application includes a cabinet body 10 and a cabinet door 11. The cabinet body 10 is formed with an installation cavity 12, and the cabinet door 11 is connected to the cabinet body 10 and configured to expose or shield the installation cavity 12, or in other words, configured to open and close the cabinet body 10. A layer plate 20 is installed in the installation cavity 12. The cabinet door 11 can be rotatably connected to the cabinet body 10.

[0024] The cabinet body 10 can specifically include a first side wall 13, a second side wall 15, and a third side wall 17, which define the installation cavity 12, wherein the second side wall 15 and the third side wall 17 are oppositely arranged. The first side wall 13 is oppositely arranged with the cabinet door 11, and the first side wall 13 is located between the second side wall 15 and the third side wall 17, and the opposite sides of the first side wall 13 can be connected to the second side wall 15 and the third side wall 17, respectively.

[0025] Please refer to FIG. 4, the cabinet body further includes a top wall 18 and a bottom wall 19. It is easy to understand that the top wall 18 is located at the top of the cabinet body 10, and the bottom wall 19 is located at the bottom of the cabinet body. Along the height direction of the busbar cabinet, the top wall 18, the first side wall 13, and the bottom wall 19 are arranged in sequence. The arrangement direction of the cabinet door 11 and the first side wall 13 is the first direction (or the width direction of the cabinet body), and the arrangement direction of the top wall 18 and the bottom wall 19 is the second direction (or the height direction of the cabinet body), and the first direction is perpendicular to the second direction.

[0026] Please refer to FIG. 2, the busbar cabinet further includes a layer plate 20, which is installed in the installation cavity 12 of the cabinet body and can be configured to install the electrical component assembly 14. The layer plate 20 is oppositely arranged with the cabinet door 11, and the first side wall 13, the layer plate, and the cabinet door 11 can be arranged along the first direction or the width direction of the busbar cabinet. The opposite sides of the layer plate 20 can be connected to the second side wall 15 and the third side wall 17, respectively.

[0027] Since the electrical component assembly 14 contains many electrical components, if they are all installed in the same plane, the cabinet body will become very large. In order to further reduce the volume of the busbar cabinet, the layer plate 20 can be multiple, and the multiple layer plates 20 can be arranged along the first direction or the width direction of the busbar cabinet. In some embodiments, the layer plate 20 can include a first layer plate 21 and a second layer plate 23 arranged in sequence along the first direction (or the width direction of the busbar cabinet), and the first layer plate 21 and the second layer plate 23 are both configured to install the electrical component assembly 14. The second layer plate 23 is located between the first layer plate 21 and the cabinet door 11, and along the width direction of the busbar cabinet, at least part of the projection of the first layer plate 21 on the cabinet door is located above the projection of the second layer plate 23 on the cabinet door 11. In the embodiments of the present application, the arrangement direction of the cabinet door and the first side wall is the first direction. By arranging the positive and negative parts of the electrical component assembly 14 in the installation cavity along the first direction, the distance between the electrical components at both ends is relatively close, the wiring distance required between the electrical components is short, and it is convenient for the staff to operate.

[0028] The layer plate 20 can further include a third layer plate 25 configured to mount the electrical element assembly 14, the first layer plate 21 is closer to the first side wall 13 relative to the second layer plate 23 and the third layer plate 25, the third layer plate 25 is closer to the cabinet door relative to the first layer plate 21 and the second layer plate 23, and the second layer plate 23 is located between the first layer plate 21 and the third layer plate 25. At least part of the projection of the first layer plate 21 on the cabinet door 11 is above the projection of the third layer plate 25 on the cabinet door 11 along the width direction of the busbar cabinet. In some embodiments, the first layer plate 21 can be mounted on the first side wall 13. In other embodiments, the first layer plate 21 can be connected to the second side wall 15 and the third side wall 17 respectively at the two opposite side edges.

[0029] The busbar cabinet further includes an electrical element assembly 14 mounted in the mounting cavity 12 of the cabinet body 10, which can include a positive electrode part 70 and a negative electrode part 80. The positive electrode part 70 and the negative electrode part 80 are arranged in a spaced manner. The positive electrode part 70 is configured to be electrically connected to the positive output end of an external high-voltage box and to the positive electrode of a battery pack. The negative electrode part 80 is configured to be electrically connected to the negative output end of the external high-voltage box and to the negative electrode of the battery pack.

[0030] Please refer to FIG. 3. In some embodiments, the external high-voltage box can be multi-cluster. The busbar cabinet can be capable of busbar connection of the external multi-cluster high-voltage box and can also be capable of controlling the current and / or voltage input to the battery pack. The positive output end of the external multi-cluster high-voltage box (which can be referred to as B1+...B4+ in FIG. 3) can be connected to the busbar cabinet through a wire harness, so that the positive output end of the external multi-cluster high-voltage box, the first circuit breaker 741, the positive fuse, the positive high-voltage relay, and the positive electrode interface are sequentially electrically connected. The positive electrode interface is configured to be electrically connected to the positive electrode of the battery pack. The negative output end of the external multi-cluster high-voltage box (which can be referred to as B1-...B4- in FIG. 3) can be connected to the busbar cabinet through a wire harness, so that the negative output end of the external multi-cluster high-voltage box, the second circuit breaker 743, the negative fuse, the negative high-voltage relay, and the negative electrode interface are sequentially electrically connected. The negative electrode interface is configured to be electrically connected to the negative electrode of the battery pack. Thus, the external multi-cluster high-voltage box can be electrically connected to a battery pack through an electrical element assembly 14 to realize functions such as charging and discharging of the battery pack. In some embodiments, the maximum current of a single-cluster high-voltage box can be less than or equal to 112A.

[0031] For example, the external high-voltage box can be four clusters. The four-cluster high-voltage box can be busbar-connected through the busbar cabinet in the embodiments of the present application to charge the battery pack, etc. The busbar cabinet in the embodiments of the present application can serve as a bridge for connection of the battery pack and the external connection. The charging and discharging of the battery pack can be realized through the busbar cabinet.

[0032] In some embodiments, the positive electrode part 70 and the negative electrode part 80 are arranged along a first direction (or the width direction of the busbar cabinet). In these embodiments, the positive electrode part 70 and the negative electrode part 80 are arranged along the first direction, respectively, which is reasonable in layout and more compact in structure, and the busbar cabinet occupies less floor space.

[0033] Please refer to FIG. 9, the positive electrode part 70 can specifically include a positive fuse 71, a positive high-voltage relay 72, and a positive electrode interface 73, which are electrically connected in sequence. The positive fuse 71 is configured to be electrically connected with the positive output end of an external high-voltage box, and the positive electrode interface 73 is configured to be electrically connected with the positive electrode of a battery pack. In the embodiments of the present application, the positive electrode part 70 includes the positive fuse 71, which can be fused in time when the current exceeds a specified value, thereby protecting the circuit of the positive electrode part 70.

[0034] The electrical component assembly 14 further includes a circuit breaker 74, which includes a first circuit breaker 741 mounted in the mounting cavity 12. In the embodiments of the present application, the first circuit breaker 741 is electrically connected with the positive electrode part 70, and is disconnected in time when a safety problem occurs, thereby protecting the circuit. In addition, the first circuit breaker 741 is arranged along the first direction with respect to the positive electrode part 70 and the negative electrode part 80, and is closer to the first side wall 13 than the positive electrode part 70 and the negative electrode part 80, which is compact in structure and reasonable in layout.

[0035] Please refer to FIG. 8, the negative electrode part 80 can specifically include a negative fuse 81, a negative high-voltage relay 82, and a negative electrode interface 83, which are electrically connected in sequence. The negative fuse 81 is configured to be electrically connected with the negative output end of an external high-voltage box, and the negative electrode interface 83 is configured to be electrically connected with the negative electrode of a battery pack. In the embodiments of the present application, the negative electrode part 80 includes the negative fuse, which can be fused in time when the current exceeds a specified value, thereby protecting the circuit of the negative electrode part 80. Since the fuses are separately provided in the positive electrode part 70 and the negative electrode part 80, the positive electrode part 70 and the negative electrode part 80 can be protected, and the safety of the circuit is improved.

[0036] The circuit breaker 74 further includes a second circuit breaker 743 mounted in the mounting cavity 12. The second circuit breaker 743 is electrically connected with the negative electrode part 80 and arranged along the first direction with respect to the negative electrode part 80. In the embodiments of the present application, the second circuit breaker 743 is electrically connected with the negative electrode part 80, and is disconnected in time when a safety problem occurs, thereby protecting the circuit. In addition, the second circuit breaker 743 can be closer to the first side wall 13 than the positive electrode part 70 and the negative electrode part 80.

[0037] Specifically, the first circuit breaker 741, the positive fuse 71, the positive high-voltage relay 72, and the positive interface 73 are electrically connected in sequence, the positive interface is configured to be electrically connected to the positive electrode of the battery pack, and the first circuit breaker 741 is configured to be electrically connected to the positive output end of the external high-voltage box; the second circuit breaker 743, the negative fuse 81, the negative high-voltage relay 82, and the negative interface 83 are electrically connected in sequence, the negative interface is configured to be electrically connected to the negative electrode of the battery pack, and the second circuit breaker 743 is configured to be electrically connected to the negative output end of the external high-voltage box. In the embodiment of the application, the first circuit breaker 741 and the second circuit breaker 743 are configured to realize the opening and closing of the overall high-voltage loop. Specifically, the first circuit breaker 741 is mainly configured to realize the opening and closing of the positive electrode part, and the second circuit breaker 743 is mainly configured to realize the opening and closing of the negative electrode part. Through the cooperation of the first circuit breaker 741 and the second circuit breaker 743, the opening and closing of the overall high-voltage loop can be realized.

[0038] If only the first circuit breaker 741 is provided in the positive electrode part 70, even if the first circuit breaker 741 is opened, in some cases, for example, in the case of reverse connection or lightning strike, the negative electrode of the battery pack has high voltage, which may damage the battery pack through the path on the negative electrode side, and may also cause safety hazards. If only the second circuit breaker 743 is provided in the negative electrode part 80, even if the second circuit breaker 743 is opened, since the positive electrode part 70 may be in a high-voltage state, safety hazards may occur. In the embodiment of the application, the first circuit breaker 741 is connected to the positive output end of the high-voltage box in the positive electrode part 70, and the second circuit breaker 743 is connected to the negative output end of the high-voltage box in the negative electrode part 80, which can further protect the circuit.

[0039] In the embodiment of the application, the fuse is provided in the positive electrode part 70 and the negative electrode part 80, and the circuit breaker is connected to the positive electrode part 70 and the negative electrode part 80, which can protect the positive electrode part 70 and the negative electrode part 80 and has high circuit safety. The first electric element assembly 14 further includes a first copper bar 701 and a second copper bar 801, the positive electrode part 70 is electrically connected to the positive output end of the external high-voltage box through the first copper bar 701, and the negative electrode part 80 is electrically connected to the negative output end of the external high-voltage box through the second copper bar 801, which generates less heat.

[0040] The first copper bar 701 can be mounted on the first layer plate 21, and the second copper bar 801 can be mounted on the first layer plate 21. The second copper bar 801 is arranged in a spaced-apart manner from the first copper bar 701, so as to facilitate the connection of the first copper bar 701 to the positive output end of the external high-voltage box and the connection of the second copper bar 801 to the negative output end of the external high-voltage box, and the structure is compact.

[0041] In some embodiments, the first copper bar 701 can specifically include a cluster high-voltage positive connection copper bar 75 and a cluster high-voltage positive-to-circuit breaker copper bar 76. The second copper bar 801 can specifically include a cluster high-voltage negative connection copper bar 85 and a cluster high-voltage negative-to-circuit breaker copper bar 86. The positive output end of the high-voltage box is connected to the cluster high-voltage positive connection copper bar 75 through a wire harness, and is connected to the first circuit breaker 741 through the cluster high-voltage positive-to-circuit breaker copper bar 76. The first circuit breaker 741 is electrically connected to the positive fuse 71 through a circuit breaker-to-output positive copper bar 77, the positive fuse 71 is connected to a positive high-voltage relay 72 through a copper bar, the positive high-voltage relay 72 is connected to a positive output wire harness through an output wire harness copper bar, and the positive output wire harness is connected to a positive terminal 73. The circuit breaker-to-output positive copper bar 77 can be installed on the second layer plate 23 towards the side of the cabinet door 11.

[0042] The negative output end of the high-voltage box is connected to the cluster high-voltage negative connection copper bar 85 through a wire harness, and is connected to the second circuit breaker 743 through the cluster high-voltage negative-to-circuit breaker copper bar 86. The circuit breaker-to-output negative copper bar 87 is electrically connected to the negative fuse 81, the negative fuse 81 is connected to a negative high-voltage relay 82 through a copper bar, the negative high-voltage relay 82 is connected to a negative output wire harness through a copper bar, and the negative output wire harness is connected to a negative terminal 83. The circuit breaker-to-output negative copper bar 87 can be installed on the third layer plate 25 towards the side of the cabinet door 11.

[0043] Please refer to FIG. 7. In order to protect the fuse and the relay from the excessive charging current at the moment of direct power-on, and to avoid damage to the fuse and the relay caused by the excessive instantaneous current, a pre-charge resistor 91 can also be provided, which is installed on the first layer plate 21 towards the side of the second layer plate 23.

[0044] In some embodiments, the circuit breaker 74 (including the first circuit breaker 741 and the second circuit breaker 743) can be installed on the first layer plate 21 close to the cabinet door 11, the positive terminal 70 can be installed on the second layer plate 23 close to the cabinet door 11, and the negative terminal 80 can be installed on the third layer plate 25 close to the cabinet door 11. In these embodiments, a plurality of layer plates 20 are provided, and the circuit breaker 74, the positive terminal 70 and the negative terminal 80 are arranged along the first direction by being installed on different layer plates, respectively.

[0045] In some embodiments, in addition to the positive terminal 70 and the negative terminal 80, the electrical component assembly 14 also includes a control terminal 100, which is installed in the installation cavity 12. The control terminal 100 is configured to be electrically connected to the positive terminal 70, the negative terminal 80 and the battery pack, and is also configured to be electrically connected to the communication signal end of the external high-voltage box to detect the status of the external high-voltage box and the battery pack.

[0046] In the related art, the energy storage system usually includes a busbar cabinet in the form of a separate equipment cabinet, and the external high-voltage box is connected to the busbar cabinet to realize bus connection. The function of the busbar cabinet is relatively single, and if the input or output current and voltage need to be controlled, another electric control cabinet in the form of a separate equipment cabinet needs to be used, which occupies a large space. In the embodiment of the present application, the electric element assembly 14 installed in the cabinet body includes a positive electrode part, a negative electrode part, and a control part. The external high-voltage box can be connected to the positive and negative electrodes of the battery pack through the positive electrode part and the negative electrode part, respectively, to realize bus connection. The control part is electrically connected to the communication signal end of the external high-voltage box to detect the state of the external high-voltage box and the battery pack, so that the function of the busbar cabinet is more abundant. Moreover, compared with the scheme in the related art in which the control part is arranged in a separate cabinet body and the positive electrode part and the negative electrode part are arranged in another separate cabinet body, in the embodiment of the present application, the control part and the positive electrode part and the negative electrode part are arranged in the same cabinet body, and the control part and the positive electrode part are arranged along the length direction or the width direction of the busbar cabinet, thereby reducing the use of one cabinet body and making the structure of the control part and the positive electrode part and the negative electrode part more compact.

[0047] In the embodiment of the present application, the control part 100 is arranged in the cabinet body, and the control part 100 is configured to be electrically connected to the communication signal end of the external high-voltage box, thereby having the following effects: first, the communication signal end of the external high-voltage box can supply power to the control part. Second, the communication signal end of the external high-voltage box can detect the state of the external high-voltage box and the battery pack in real time, and if the high-voltage box fails, the failure can be fed back to the busbar cabinet through the communication signal end, and the busbar cabinet can feed back the failure to the driver's console. Third, the state of the battery pack, including the working voltage, the working current, the remaining capacity, the remaining life of the battery system, and the like, can be detected in real time through the communication signal end and fed back. Compared with the scheme in the related art in which the energy storage system usually includes an electric control cabinet and a busbar cabinet in the form of separate equipment cabinets, the busbar cabinet provided in the embodiment of the present application has more abundant functions, a more compact structure, and occupies a smaller space.

[0048] It should be noted that the external high-voltage box of the busbar cabinet can include a positive electrode output end, a negative electrode output end, and a communication signal end. The side wall of the cabinet body can be provided with a wire inlet 90 configured to connect to an external wire harness. The wire inlet 90 specifically includes a positive electrode wire inlet, a negative electrode wire inlet, and a communication wire inlet. The high-voltage wire harness connected to the high-voltage box can be installed in the wire inlet 90 through a gland, and the wire harness passing through the gland is locked, thereby improving the protection level of the cabinet body. Foreign matter and moisture are prevented from entering the busbar cabinet, thereby preventing the busbar cabinet from failing and causing a short circuit.

[0049] The communication signal end enters the cabinet through the communication wire inlet opening formed in the side wall of the cabinet, and is then connected to the BMS control 31. The positive output end of the external high-voltage box enters the cabinet through the positive wire inlet opening formed in the side wall of the cabinet, is connected to the first copper bar 701, and is connected to the first circuit breaker 741. The negative output end enters the cabinet through the negative wire inlet opening formed in the side wall of the cabinet, is connected to the second copper bar 801, and is connected to the second circuit breaker 743.

[0050] In some embodiments, the control part 100 and the positive part 70 can be arranged along the length direction of the busbar cabinet, and the positive part 70 and the negative part 80 are arranged along the width direction of the busbar cabinet, i.e., the first direction, so that the structure can be more compact and occupy less space.

[0051] In some embodiments, the control part 100 includes a first sub-control part 101 and a second sub-control part 103, and the first sub-control part 101, the positive part 70, and the second sub-control part 103 are arranged in sequence along the length direction of the busbar cabinet. In these embodiments, the control part 100 is provided in two groups, and the first sub-control part 101 and the second sub-control part 103 are located on both sides of the positive part 70 and the negative part 80. Specifically, the first sub-control part 101 can be mounted on the second side wall 15, and the second sub-control part 103 can be mounted on the third side wall 17.

[0052] In some embodiments, the second sub-control part 103 of the control part 100 includes the BMS control 31, which is configured to be electrically connected to the communication signal end of the external high-voltage box, and the BMS control 31 is electrically connected to the positive part 70 and the negative part 80, respectively.

[0053] In some embodiments, the electrical element assembly 14 further includes an adjustment indication part 200 mounted on the side of the cabinet door 11 away from the mounting cavity 12, and the adjustment indication part 200 is electrically connected to the BMS control 31 and is configured to adjust and indicate the working condition of the battery pack.

[0054] In the embodiments of the present application, the electrical element assembly 14 can be multiple groups, and the specific structure of the electrical element assembly 14 has been described above. Each electrical element assembly 14 includes the above-mentioned positive part 70, negative part 80, control part, etc., and the specific content is not repeated here.

[0055] An electrical element assembly 14 can be configured to be electrically connected to an external multiple-cluster high-voltage box and to be electrically connected to a battery pack. Multiple electrical element assemblies 14 are arranged from top to bottom along the height direction of the busbar cabinet. Thus, through the busbar cabinet of the embodiments of the present application, the busbar of multiple battery packs can be simultaneously satisfied, the occupied area is small, the use is convenient, and the cost is lower.

[0056] In the embodiment of the present application, the electric element assembly 14 is configured to be electrically connected with the external multi-cluster high-voltage box and configured to be electrically connected with a battery pack, so as to realize the current collection of the electric element assembly 14 to the external multi-cluster high-voltage box, and the external multi-cluster high-voltage box charges and discharges the battery pack after the current collection through the electric element assembly 14. In the cabinet, a plurality of electric element assemblies 14 are arranged and configured to be electrically connected with a plurality of battery packs, so as to meet the current collection requirement of the plurality of battery packs, thereby improving the situation that the current collection cabinet in the related art is difficult to meet the current collection requirement of the plurality of battery packs.

[0057] In some embodiments, for the convenience of description, the plurality of battery packs at least include a first battery pack and a second battery pack, and the plurality of electric element assemblies 14 at least include a first electric element assembly 14 and a second electric element assembly 14. The mounting cavity of the cabinet includes a first mounting cavity 121 and a second mounting cavity 123 arranged from top to bottom along the height direction of the current collection cabinet;

[0058] The first electric element assembly 14 is installed in the first mounting cavity 121, the first electric element assembly 14 is electrically connected with the external high-voltage box, the first electric element assembly 14 is electrically connected with the first battery pack, and the external high-voltage box can be multi-cluster. The second electric element assembly 14 is installed in the second mounting cavity 123, the second electric element assembly 14 is electrically connected with the external high-voltage box, the second electric element assembly 14 is electrically connected with the second battery pack, and the external high-voltage box can be multi-cluster.

[0059] In some embodiments, a single battery pack can be connected with four clusters of high-voltage boxes, there are eight clusters of external high-voltage boxes, the first electric element assembly 14 can collect the current of the external four clusters of high-voltage boxes and be configured to charge the first battery pack, and the second electric element assembly 14 can collect the current of the other four clusters of external high-voltage boxes and be configured to charge the second battery pack. In the embodiment of the present application, the current collection cabinet can simultaneously meet the high-voltage current collection and low-voltage control of two or more battery packs, has small floor area, is convenient to use, and has lower cost.

[0060] Please refer to FIG. 4, wherein the first mounting cavity 121 can include a first mounting space 1211 and a second mounting space 1213 arranged along the height direction of the current collection cabinet. Specifically, in the first mounting cavity 121, along the width direction of the current collection cabinet, at least part of the projection of the first layer plate 21 on the cabinet door (or the first side wall) is located above the projection of the second layer plate 23 on the cabinet door 11 (or the first side wall). Along the width direction of the current collection cabinet, at least part of the projection of the first layer plate 21 on the cabinet door is located above the projection of the third layer plate 25 on the cabinet door 11. In this way, at least part of the first layer plate 21 can be directly opposite to the cabinet door 11 and form the first mounting space 1211.

[0061] Part of the first layer plate 21 and the second layer plate 23 and the third layer plate 25 form a second installation space 1213, which can specifically include a first sub-installation cavity, a second sub-installation cavity and a third sub-installation cavity, part of the first layer plate and the second layer plate 23 define the first sub-installation cavity, the second layer plate 23 and the third layer plate 25 define the second sub-installation cavity, and the third layer plate 25 and the cabinet door define the third sub-installation cavity. At least part of the first circuit breaker 741 is installed in the first installation space 1211, and at least part of the second circuit breaker 743 is installed in the first installation space 1211.

[0062] The specific implementation is that the opposite sides of the first layer plate 21 can be connected to the second side wall and the third side wall, such as welding, screwing, etc., the opposite sides of the second layer plate 23 can be connected to the second side wall and the third side wall, such as welding, screwing, etc., and the opposite sides of the third layer plate 25 can be connected to the second side wall and the third side wall, such as welding, screwing, etc. In this way, the first layer plate 21, the second layer plate 23 and the third layer plate 25 are installed in the cabinet body. The structure is more compact, reducing the volume of the cabinet body and the occupied space.

[0063] In the second installation cavity 123, the specific positional relationship of the first layer plate 21, the second layer plate 23 and the third layer plate 25 can refer to the specific positional relationship thereof in the first installation cavity 121.

[0064] In some embodiments, each electrical element assembly 14 includes the above-mentioned positive electrode part 70 and negative electrode part 80, the positive electrode part 70 is configured to be electrically connected with the positive output end of the external high-voltage box and the positive electrode of a battery pack; the negative electrode part 80 is configured to be electrically connected with the negative output end of the external high-voltage box and the negative electrode of the battery pack. In this way, one electrical element assembly 14 can correspond to one battery pack, and multiple electrical element assemblies 14 can correspond to multiple battery packs, and the one-to-one correspondence between the electrical element assembly 14 and the battery pack can be established.

[0065] Please refer to Fig. 3. Since the over-current capacity of one positive interface matched with one negative interface cannot meet the use requirement due to the access to multiple cluster high-voltage boxes, multiple positive parts 70 and multiple negative parts 80 are arranged, wherein the positive part 70 corresponds to the negative part 80. That is to say, each electric element assembly 14 includes multiple positive parts 70 and multiple negative parts 80, so that each electric element assembly 14 includes multiple positive interfaces (see Fig. 3, charging seat 1 DC+ and Fig. 3, charging seat 2 DC+) and multiple negative interfaces (see Fig. 3, charging seat 1 DC- and Fig. 3, charging seat 2 DC-), and the positive interface and the negative interface are in one-to-one corresponding matching relationship, and one positive interface and one negative interface form a charging and discharging interface. The multiple positive parts 70 are electrically connected to the positive pole of the battery pack, and the multiple negative parts 80 are electrically connected to the negative pole of the battery pack. By arranging multiple positive parts 70 and multiple negative parts 80, a larger current can be provided for a battery pack.

[0066] In some embodiments, since the maximum current input by the four cluster high-voltage boxes is about 448A, and the over-current capacity of a single charging and discharging interface is about 250A, two positive parts 70 and two negative parts 80 are arranged to share the current.

[0067] In some embodiments, for the control part 100, in order to facilitate user use, two battery packs can be distinguished, and each electric element assembly 14 includes a control part, which is configured to be electrically connected to the electric element assembly 14 and the battery pack, and is configured to be electrically connected to the communication signal end of the external high-voltage box to detect the state of the external high-voltage box and the battery pack. In this way, one control part controls one battery pack, and the control is accurate.

[0068] In some embodiments, the control part can include a first control part and a second control part, the first control part is installed in the first installation cavity 121, and the second control part is installed in the second installation cavity 123. The first control part is electrically connected to the first battery pack and the first electric element assembly 14 respectively, detects the state of the external high-voltage box and the first battery pack, and the second control part is electrically connected to the second battery pack and the second electric element assembly 14 respectively, detects the state of the external high-voltage box and the second battery pack.

[0069] By separately controlling the first battery pack and the second battery pack by the first control part and the second control part respectively, the control of the two battery packs is independent of each other, and the control accuracy is improved.

[0070] In some embodiments, each of the electrical component assemblies 14 includes two parts, an electrically connected first sub-control part 101 and a second sub-control part 103, which are located on both sides of the cabinet along the length direction of the cabinet, and can be installed on the second side wall and the third side wall, respectively.

[0071] Specifically, the second sub-control part is installed on the side of the third side wall of the cabinet facing the second side wall of the cabinet.

[0072] In some embodiments, the projection of the first sub-control part 101 on the first side wall is above the projection of the second layer plate on the first side wall along the width direction of the cabinet.

[0073] In some embodiments, the projection of the second sub-control part 103 on the first side wall is above the projection of the second layer plate on the cabinet door.

[0074] In some embodiments, the projection of the first sub-control part 101 on the first side wall is above the projection of the second layer plate on the first side wall along the width direction of the cabinet. At the same time, the projection of the second sub-control part on the first side wall is above the projection of the second layer plate on the cabinet door.

[0075] Please refer to FIG. 5 and FIG. 6, the first sub-control part is configured to control the indicator light module 41 and the switch module 43, and can include a signal relay 33, an air switch 35, a row line slot 36, a wiring terminal 37, an AC / DC power supply 38, etc. The second sub-control part 103 can include a BMS control 31. The communication signal end can be powered by the AC / DC power supply in the cabinet.

[0076] Specifically, in the first installation space 1211, the side of the second side wall of the cabinet facing the third side wall of the cabinet can be installed with a first support plate, and the first sub-control part is installed on the first support plate and mounted on the second side wall through the first support plate. The side of the third side wall of the cabinet facing the second side wall of the cabinet can be installed with a second support plate, and the second sub-control part is installed on the second support plate and mounted on the third side wall through the second support plate.

[0077] In some specific embodiments, the BMS control 31 is installed on the second support plate and configured to manage the battery and mounted on the third side wall through the second support plate. The communication signal end of the external high-voltage box can enter the cabinet through the incoming line port and then be connected to the BMS control 31. The BMS battery management system is also configured in multiple groups, and one BMS battery management system is configured to control one group of battery systems. In some embodiments, the battery system is configured in two groups, and the BMS battery management system is configured in two groups, so as to be able to manage the two groups of battery systems, respectively.

[0078] Specifically, the first support plate can be mounted with a guide rail, and the wiring terminal 37, the signal relay 33 and the air switch 35 are all mounted on the guide rail and are buckle-mounted with the guide rail. The AC / DC power supply 38 is mounted on the first support plate.

[0079] In some embodiments, the indicator light and the switch can be mounted on the cabinet door and located on the outside of the cabinet door away from the installation cavity. The indicator light and the switch are connected to the wiring terminal through a wire harness, and the wiring terminal is connected to the signal relay and the air switch through a wire harness. The wire harness can be connected to the BMS control 31 through the wiring slot, and the BMS control 31 outputs signals to the driver station through a wire harness.

[0080] In some embodiments, each first electrical component assembly 14 further comprises an auxiliary power supply part, which can be mounted on the second layer plate 23 and the third layer plate 25. The auxiliary power supply part 300 comprises an auxiliary power supply positive fuse 301, an auxiliary power supply negative fuse 303, an auxiliary power supply positive terminal 305 and an auxiliary power supply negative terminal 307. The auxiliary power supply positive fuse 301 and the auxiliary power supply positive terminal 305 are mounted on the second layer plate 23, and the auxiliary power supply negative fuse and the auxiliary power supply negative terminal 307 are mounted on the third layer plate 25. The first circuit breaker 741, the auxiliary power supply positive fuse 301 and the auxiliary power supply positive terminal 305 are sequentially electrically connected, and the auxiliary power supply positive terminal is configured to be electrically connected to the positive terminal of the auxiliary power supply cabinet.

[0081] The second circuit breaker 743, the auxiliary power supply negative fuse 303 and the auxiliary power supply negative terminal 307 are sequentially electrically connected, and the auxiliary power supply negative terminal is configured to be electrically connected to the negative terminal of the auxiliary power supply cabinet.

[0082] The auxiliary power supply positive terminal 305 and the auxiliary power supply negative terminal 307 are configured to connect the auxiliary power supply cabinet and can also charge the auxiliary power supply cabinet. In addition, the auxiliary power supply positive fuse 301 and the auxiliary power supply negative fuse 303 meet the requirement of arranging fuses separately for each path.

[0083] Specifically, the positive output end of the high-voltage box is connected to the cluster high-voltage positive copper bus through a wire harness, and then connected to the circuit breaker through the cluster high-voltage positive copper bus to the circuit breaker. The circuit breaker is connected to the auxiliary power supply positive fuse 301, which is connected to the auxiliary power supply positive output wire harness through the auxiliary power supply positive copper bus. The auxiliary power supply positive output wire harness is connected to the auxiliary power supply positive terminal 305.

[0084] The negative output end of the high-voltage box is connected to the cluster high-voltage negative copper bus through a wire harness, and then connected to the circuit breaker through the cluster high-voltage negative copper bus to the circuit breaker. The circuit breaker is connected to the auxiliary power supply negative fuse 303, which is connected to the auxiliary power supply negative output wire harness through the auxiliary power supply negative copper bus. The auxiliary power supply negative output wire harness is connected to the auxiliary power supply negative terminal 307.

[0085] In some embodiments, each first electrical component assembly 14 further comprises a surge protection unit 400, which can be mounted on the second layer plate 23. The surge protection unit 400 comprises a first surge fuse 401, a surge protector 405, and a second surge fuse 403. The first circuit breaker 741, the first surge fuse, the surge protector, the second surge fuse, and the second circuit breaker 743 are electrically connected in sequence to form a surge protection circuit. By providing the surge protection circuit, the device is configured to prevent damage caused by lightning strikes.

[0086] Specifically, the first circuit breaker 741 is electrically connected to the circuit breaker to output positive copper bar, and the second circuit breaker 743 is electrically connected to the circuit breaker to output negative copper bar. One end of the first surge fuse is connected to the circuit breaker to output positive copper bar through a wire harness, so that the first surge fuse is electrically connected to the first circuit breaker 741. The other end of the first surge fuse is connected to the surge protector. One end of the surge protector is connected to the second surge fuse in series through a wire harness, and the second surge fuse is connected to the circuit breaker to output negative copper bar through a wire harness, so that the second surge fuse is electrically connected to the second circuit breaker 743. The circuit breaker to output positive copper bar can be mounted on the side of the second layer plate 23 facing the cabinet door. The circuit breaker to output negative copper bar can be mounted on the side of the third layer plate 25 facing the cabinet door.

[0087] In some embodiments, a guide rail and an insulating column can be mounted on the second layer plate 23. The guide rail is configured to fix the surge protector, thereby improving the installation efficiency and stability. The first surge fuse and the second surge fuse are fixed on the insulating column of the bracket plate.

[0088] In some embodiments, the layer plate can be provided with an access hole. The access hole can be a waist-shaped access hole 201. In the case of loose wire harness, the layer plate closer to the cabinet door can be directly reinforced without disassembly, thereby facilitating reinforcement and maintenance.

[0089] In some embodiments, the layer plate can be covered with a PC film to improve the insulation performance. Specifically, the side of the layer plate facing the cabinet door can be covered with a PC film.

[0090] In some embodiments, an insulating plate 603 can be mounted on the side away from the cabinet door, configured to increase the electrical gap between the copper bars and improve the insulation performance. The insulating plate 603 can be an acrylic insulating plate.

[0091] In some embodiments, each first electrical component assembly 14 further comprises an adjustment and indication unit, which is mounted on the side of the cabinet door away from the installation cavity, configured to adjust and indicate the working condition of a battery pack.

[0092] The adjustment indicating part 200 can include the first operation module 40, the second operation module 50 and the warning module 60, which are arranged in sequence from top to bottom along the height direction of the cabinet body.

[0093] The first operation module is configured to display and control the working condition of the first battery pack, and the second operation module is configured to display and control the working condition of the second battery pack.

[0094] In the embodiment, the control part adopts the grouping arrangement for the first battery pack and the second battery pack, so that when a fault occurs, the source of the fault can be intuitively identified as the battery pack, and the input and output of the battery pack can be timely cut off to avoid greater loss. Thus, the state of the high-voltage box of the two battery packs can be monitored, and the communication of the two battery systems can be integrated and output to the driver console.

[0095] Next, the first operation module is described. The first operation module 40 includes an indicating light module 41, a switch module 43, a buzzer 45 and a display module 47. The first operation module 40 timely feeds back and controls the state of the first battery pack. The indicating light module 41 and the switch module 43 are electrically connected with the control part.

[0096] The display module is arranged on one side of the cabinet door connected with the cabinet body, and the indicating light module is arranged on the other side of the cabinet door connected with the cabinet body and spaced from the display module.

[0097] The indicating light module 41 can include a running indicating light 411, a fault indicating light 413, a closing indicating light 415, an over-temperature indicating light 412, a 24V voltage indicating light 414 and a SOC low indicating light 416. The indicating light module is arranged in two parallel rows. The first row includes the running indicating light, the fault indicating light and the closing indicating light, and the second row includes the over-temperature indicating light, the 24V voltage indicating light and the SOC low indicating light. The indicating light module is arranged in two parallel rows, and the first row of the indicating light module and the second row of the indicating light module are relatively compact in structure, which is convenient for the operator to operate.

[0098] The switch module 43 can include a remote / local control switch 431, a start / stop control switch 433, and a mute control switch 435. The remote / local control switch 431, the start / stop control switch 433, and the mute control switch 435 are arranged in a row and are arranged in parallel with the indicator light module. Thus, the indicator light module 41 and the switch module 43 are arranged in parallel, from top to bottom, as the first row of the indicator light module 41, the second row of the indicator light module 41, and the switch module 43. The switch module and the indicator light module are relatively compact. The first row of the indicator light module is higher than the display module 47, and a mounting space is arranged between the side of the display module facing the first row of the indicator light module and the display module. The buzzer and the emergency stop switch 437 are mounted in the mounting space, which is convenient for the operator to operate and is not easy to be accidentally touched. The buzzer is arranged close to the first row of the indicator light module, and the buzzer is located above the display module. The emergency stop switch is located between the buzzer and the display module 47.

[0099] The display module 47 is mounted on the cabinet door and is configured to display related parameters and working conditions. The display module 47 is arranged separately by using the first battery pack and the second battery pack. The display modules 47 of the two battery packs are independent of each other and do not interfere with each other. The battery states of the two battery systems can be monitored through the two display modules 47 of the cabinet door. In some embodiments, the two display modules 47 can each use a touch display screen.

[0100] The structure and effects of the second operation module can refer to those of the first operation module. The second operation module is configured to display and control the working conditions of the second battery pack. The first operation module can be opened separately to expose the internal structure, and the second operation module can be opened separately to expose the internal structure. At the same time, the cabinet door can also be opened as a whole. When the cabinet lock is opened, the cabinet door can be opened as a whole from the handle.

[0101] The warning module 60 includes an identification member and a cabinet lock. The ventilation member is arranged close to the bottom of the cabinet door, and the identification member is arranged between the ventilation member, the cabinet lock, and the second operation module. The cabinet lock is configured to lock the cabinet door. The identification member can be a high-voltage warning sign.

[0102] In the embodiments of the present application, the low-voltage indicator light and the control switch are arranged separately by using the first battery pack and the second battery pack. The low-voltage indicator light and the control switch of each battery pack are independent of each other and do not interfere with each other, so that the charging and discharging of the two battery packs can be controlled respectively.

[0103] To improve the heat dissipation effect, in the embodiments of the present application, the busbar cabinet can adopt ventilation and heat dissipation. In some embodiments, an air outlet 1010 is formed at the top of the cabinet body 10, and an air inlet 1030 is formed on the cabinet door. The air inlet and the air outlet are respectively communicated with the installation cavity 12, and the air outlet assembly is configured to discharge the gas in the installation cavity 12 out of the air outlet 1010. The electrical element assembly 14 is installed in the installation cavity 12 and is configured to converge multiple external high-voltage boxes. At least part of the electrical element assembly 14 is located in the air path between the air inlet and the air outlet. In these embodiments, air enters the cabinet body through the air inlet, and the electrical element assembly 14 generates heat when it works. The heated air rises and passes through the electrical element assembly 14, which can fully drive the hot air generated by the electrical element assembly 14 to be discharged upward, avoiding the accumulation of high temperature and causing the failure of the electrical element assembly 14. The air inlet 1030 can be formed at a position close to the bottom wall 19 of the cabinet door.

[0104] In the embodiments of the present application, the bottom air inlet and the top air outlet are beneficial to discharging more hot air and improving the heat dissipation effect. The air carries away the heat generated by the electrical element assembly 14 and is discharged from the top of the cabinet body. The top air outlet is beneficial to discharging more hot air and improving the heat dissipation effect.

[0105] In some embodiments, the busbar cabinet further comprises an air outlet assembly installed in the installation cavity 12 and arranged close to the top of the cabinet body. The air outlet assembly is configured to discharge the gas in the cabinet body 10 out of the air outlet 1010. The air outlet assembly and the air outlet 1010 arranged at the top improve the heat dissipation efficiency.

[0106] In some embodiments, the air outlet assembly comprises a fan, a first filter screen 601 and a second filter screen 602. The fan is configured to make the air enter the cabinet body to dissipate heat for the internal elements of the cabinet body and to discharge the gas in the installation cavity from the air outlet, that is, to discharge air to the outside. The first filter screen 601 is installed on the cabinet body 10 and is configured to cover the air outlet 1010. The air inlet assembly comprises a second filter screen 602, which is installed on the cabinet door and is configured to cover the air inlet. The second filter screen 602 covers the air inlet, thereby preventing external gas from carrying particles into the cabinet body and adversely affecting the electrical element assembly 14. The first filter screen 601 covers the air outlet, thereby preventing external dust from entering the cabinet body through the air outlet. The fan can be a Roots blower, a centrifugal ventilator, an axial flow ventilator, a vane blower, etc. The present application does not limit this.

[0107] The first filter screen 601 and the second filter screen 602 can both be louvered filter screens, and the fan can include a louvered fan. The louvered fan is connected to the BMS control 31 through a wire harness and is controlled by the program in the BMS control 31 to open and close the fan, thereby achieving ventilation and heat dissipation in the busbar cabinet.

[0108] The air inlet can adopt a 323mm*323mm louver filter screen group, and the air outlet can adopt two groups of 204mm*204mm louver filter screen groups matched with two 24V direct-current axial flow fans, the protection level can reach IP55, and the air flow can reach 98m³ / h.

[0109] In some embodiments, the louver fan can be connected to the BMS control 31 through a wire harness, and the opening and closing of the fan can be controlled by the program in the BMS control 31 to realize ventilation and heat dissipation inside the busbar cabinet.

[0110] In some embodiments, the layer plate is configured to install the electrical element assembly 14 on the side of the air inlet; in the first direction, at least part of the electrical element assembly 14 is projected on the air inlet above the cabinet door, and / or at least part of the electrical element assembly 14 is projected on the air inlet inside the cabinet door.

[0111] Therefore, the air entering the air inlet can pass through the electrical element assembly 14 on the layer plate, and the heat dissipation is better.

[0112] In some embodiments, the plurality of layer plates can each be provided with a through hole penetrating in the first direction. In these embodiments, the layer plate is provided with a through hole penetrating in the first direction, the through hole can be configured to install the electrical element assembly 14, and can be configured for maintenance. After the external air enters between the third layer plate 25 and the cabinet door through the air inlet, it can enter between the second layer plate 23 and the third layer plate 25 through the through hole, and can enter between the first layer plate 21 and the second layer plate 23 through the through hole, which is helpful for heat dissipation.

[0113] In the embodiments of the present application, after the external gas enters the cabinet body, it can be divided into at least two paths, one path enters between the first layer plate 21 and the second layer plate 23, and carries away the heat of part of the first electrical element assembly 14 installed on the first layer plate 21, and the other path enters between the second layer plate 23 and the cabinet door, and carries away the heat of part of the first electrical element assembly 14 installed on the second layer plate 23, and is discharged by the air outlet arranged on the top wall. That is, the two paths of gas simultaneously dissipate heat for the first electrical element assembly 14, and the heat dissipation efficiency is high.

[0114] In some embodiments, in the first direction, at least part of the projection of the first layer plate 21 on the cabinet door is above the projection of the second layer plate 23 on the cabinet door. That is, at least part of the first layer plate 21 can be directly opposite the cabinet door to form a cavity, and the cavity is above the second layer plate 23 and the third layer plate 25. In other words, at least part of the first layer plate 21 is not provided with the second layer plate and the third layer plate 25 between the first layer plate 21 and the cabinet door. In this way, the gas entering between the first layer plate 21 and the second layer plate and the gas between the second layer plate and the cabinet door can converge at the cavity formed by the direct opposite of the first layer plate 21 and the cabinet door. This can fully guide the gas out of the air outlet, which is conducive to heat dissipation.

[0115] The air outlet 1010 is formed in the top wall 18, and in the height direction of the busbar cabinet, at least part of the projection of the second layer plate 23 on the top wall 18 is located in the air outlet 1010. In this way, the air can be blown out from the air outlet.

[0116] In some embodiments, the cabinet further comprises an insulating plate 603, and the at least one layer plate is provided with the insulating plate 603 away from the cabinet door. In this way, the electrical gap between the electrical component assemblies 14, such as copper bars, is increased, heat dissipation is improved, and insulation performance is improved.

[0117] In a second aspect, the embodiments of the present application also provide a power storage system, which comprises the busbar cabinet according to any of the above embodiments.

Claims

1. A busbar cabinet, comprising: a cabinet body (10) provided with a mounting cavity (12), and a cabinet door (11) connected to the cabinet body (10) to cover or expose the mounting cavity (12), the cabinet body (10) comprising a first side wall (13) arranged opposite to the cabinet door (11), and the arrangement direction of the cabinet door (11) and the first side wall (13) is a first direction; an electrical component assembly (14) installed in the mounting cavity (12), the electrical component assembly (14) comprising a positive electrode part (70) and a negative electrode part (80) arranged at intervals, the positive electrode part (70) being configured to be electrically connected to a positive electrode output end of an external high-voltage box and to a positive electrode of a battery pack, and the negative electrode part (80) being configured to be electrically connected to a negative electrode output end of the external high-voltage box and to a negative electrode of the battery pack, the positive electrode part (70) and the negative electrode part (80) being arranged along the first direction.

2. The busbar cabinet according to claim 1, wherein, The positive electrode part (70) comprises a positive fuse (71), a positive high-voltage relay (72), and a positive electrode interface (73), which are electrically connected in sequence, the positive fuse (71) being configured to be electrically connected to the positive electrode output end of the external high-voltage box, and the positive electrode interface (73) being configured to be electrically connected to the positive electrode of the battery pack.

3. The busbar cabinet according to claim 2, wherein, The electrical component assembly (14) further comprises a first circuit breaker (741) installed in the mounting cavity (12), the first circuit breaker (741) being electrically connected to the positive electrode part (70) and arranged along the first direction with the positive electrode part (70), and the first circuit breaker (741) being closer to the first side wall (13) than the positive electrode part (70) and the negative electrode part (80).

4. The busbar cabinet according to claim 3, wherein, The negative electrode part (80) comprises a negative fuse (81), a negative high-voltage relay (82), and a negative electrode interface (83), which are electrically connected in sequence, the negative fuse (81) being configured to be electrically connected to the negative electrode output end of the external high-voltage box, and the negative electrode interface (83) being configured to be electrically connected to the negative electrode of the battery pack.

5. The busbar cabinet according to claim 3 or 4, wherein The electrical component assembly (14) further comprises a second circuit breaker (743) installed in the mounting cavity (12), the second circuit breaker (743) being electrically connected to the negative electrode part (80) and arranged along the first direction with the negative electrode part (80).

6. The busbar cabinet according to claim 5, wherein, The busbar cabinet further comprises a plurality of layers (20) arranged opposite to the cabinet door (11), the plurality of layers (20) comprising a first layer (21), a second layer (23) and a third layer (25) arranged in sequence along the first direction, the first layer (21) being closer to the first side wall (13) relative to the second layer (23) and the third layer (25), the first circuit breaker (741) and the second circuit breaker (743) being installed on a side of the first layer (21) close to the cabinet door (11), the positive electrode part (70) being installed on a side of the second layer (23) close to the cabinet door (11), and the negative electrode part (80) being installed on a side of the third layer (25) close to the cabinet door (11).

7. The busbar cabinet according to claim 6, wherein, The electrical component assembly (14) further comprises a first copper bar (701) and a second copper bar (801), the positive electrode part (70) being electrically connected to a positive output end of an external high-voltage box through the first copper bar (701), and the negative electrode part (80) being electrically connected to a negative output end of the external high-voltage box through the second copper bar (801).

8. The busbar cabinet according to claim 7, wherein, The first copper bar (701) is installed on the first layer (21), and the second copper bar (801) is installed on the first layer (21), the second copper bar (801) being arranged apart from the first copper bar (701).

9. The busbar cabinet according to any one of claims 1 to 4, wherein The electrical component assembly (14) further comprises a control part (100) installed on the installation cavity (12), the control part (100) being configured to be electrically connected to the positive electrode part (70), the negative electrode part (80) and the battery pack, and the control part (100) being configured to be electrically connected to a communication signal end of an external high-voltage box to detect a state of the external high-voltage box and the battery pack.

10. An energy storage system comprising the busbar cabinet according to any one of claims 1 to 9.

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