Circuit breaking device, battery pack and electric equipment

Abstract

The utility model relates to a circuit breaking device, a battery pack and electric equipment.The circuit breaking device comprises a shell and a connecting piece installed in the shell, and the connecting piece comprises a main body, a first connecting part and a second connecting part; the first connecting part and the second connecting part are respectively connected with the main body and are arranged at the same end of the main body. According to the technical scheme, the circuit breaking device provided by the utility model can improve the space utilization rate of the battery pack and improve the application range of the battery pack.

Description

Technical Field

[0001] The present disclosure relates to the technical field of battery protection, and in particular to a circuit breaker, a battery pack, and an electrical device. Background Art

[0002] Battery packs have been widely used in various industries due to their environmental friendliness and other characteristics. However, since the battery packs themselves have high voltage characteristics, in order to ensure the safety of the battery packs during use in the power supply system, circuit protection is usually set. When the voltage is too high or the battery temperature is too high, the circuit is cut off to ensure the safety of the entire power supply system.

[0003] In the related art, the battery pack is provided with a hot-melt circuit breaker device, which is used to cut off the circuit when the circuit is overloaded for a long time or a short circuit occurs. The structural volume design of the circuit breaker device is often large and cannot meet the use scenarios of some compact spaces. Utility Model Content

[0004] The purpose of the present disclosure is to provide a circuit breaker device, a battery pack and an electrical device, wherein the circuit breaker device can improve the space utilization rate of the battery pack and increase the application range of the battery pack.

[0005] In order to achieve the above-mentioned purpose, the present disclosure provides a circuit breaker device, including a shell and a connector installed in the shell, the connector including a main body, a first connecting part and a second connecting part, the first connecting part and the second connecting part are respectively connected to the main body and arranged at the same end of the shell.

[0006] Optionally, two ends of the main body are respectively bent to form the first connecting portion and the second connecting portion, and the first connecting portion and the second connecting portion at least partially fit the shell.

[0007] Optionally, the main body includes a first plate segment, a second plate segment and a third plate segment, the second plate segment and the third plate segment are respectively connected to two ends of the first plate segment and arranged on the same side of the first plate segment, the second plate segment is bent away from the third plate segment to form the first connecting portion, and the third plate segment is bent toward the second plate segment to form the second connecting portion.

[0008] Optionally, the shell includes a first shell, a second shell and a third shell, the first shell is arranged between the second plate segment and the third plate segment, the second shell and the third shell are respectively arranged on opposite sides of the first shell and connected to the first shell, the first connecting portion is attached to the second shell, and the second connecting portion is attached to the first shell.

[0009] Optionally, the first shell includes a first main body and a baffle, the first main body is arranged between the second plate segment and the third plate segment, and the baffle protrudes from the first main body and is used to separate the first connecting portion and the second connecting portion.

[0010] Optionally, the second shell includes a second main body and a baffle plate, wherein the baffle plate protrudes from the second main body and includes a first plate body and a second plate body, wherein the first plate body is connected to the second plate body and is arranged at an angle.

[0011] Optionally, the first shell includes a first side plate and a second side plate, the first side plate and the second side plate are respectively connected to opposite ends of the baffle, the first side plate is connected to the first plate body, the second plate body is arranged opposite to the baffle and a first avoidance opening is formed between the second side plate and the first plate body.

[0012] Optionally, the third shell includes a first shell cover, the first shell cover is connected to the first side plate and the first main body, and a second avoidance opening is formed between the first shell cover and the baffle.

[0013] Optionally, the third shell further includes a second shell cover, the first shell cover is connected to the second shell cover and is arranged at an angle, the second shell cover is attached to the first plate segment, and the second shell cover extends to connect with the second body.

[0014] Optionally, the circuit breaker device comprises a cutting piece and an actuating assembly, wherein the cutting piece and the actuating assembly are installed in the housing, and the actuating assembly can drive the cutting piece to move toward the connecting piece to cut off the main body.

[0015] Optionally, the cutting piece includes a seat body and a cutting edge, wherein the cutting edge is connected to the seat body and arranged toward the main body.

[0016] Optionally, the main body is provided with a weak portion, and the cutting edge is arranged toward the weak portion.

[0017] Optionally, the actuating assembly includes a signal terminal, an igniter and a blasting body, the shell is formed with a mounting cavity, the blasting body is at least partially accommodated in the seat body, the igniter and the signal terminal are electrically connected and installed in the mounting cavity, and the igniter is located between the signal terminal and the blasting body.

[0018] Optionally, the actuating assembly includes a signal terminal, a coil and a magnet, the shell forms an installation cavity and is provided with a fixing seat, the fixing seat is fixed in the installation cavity and forms a cavity, the signal terminal is fixedly installed in the installation cavity and is electrically connected to the coil, the coil is wound on the outer wall of the fixing seat, and the magnet is located in the cavity and is fixedly connected to the cutting piece.

[0019] On the basis of the above technical solution, the present disclosure provides a battery pack, which includes a first electrical component, a second electrical component and the above-mentioned circuit breaker device, and the circuit breaker device is used to conduct or cut off the electrical connection between the first electrical component and the second electrical component.

[0020] Optionally, the first electrical component is a first battery pack, the second electrical component is a second battery pack, the battery pack includes a tray, the battery tray includes a tray body and a partition beam, the tray body forms a supporting space, the partition beam is used to separate the supporting space, the first battery pack and the second battery pack are arranged on both sides of the partition beam, and the circuit breaker is arranged on the partition beam.

[0021] Optionally, the battery pack further includes a power distribution module, the circuit breaker device includes a signal terminal, and the power distribution module is electrically connected to the signal terminal.

[0022] On the basis of the above technical solution, the present disclosure further provides an electrical device, which includes the above battery pack or the above circuit breaker device.

[0023] Through the above technical scheme, when the circuit breaker device provided by the present invention is applied to the technical field of battery protection, the first connecting portion and the second connecting portion arranged at the same end of the connecting piece are generally used to connect two adjacent battery packs, that is, the ports for connecting the lead-out terminals of the two battery packs can be arranged on the same side of the circuit breaker device. In this way, the space occupied by the circuit breaker device in the battery pack can be reduced, meeting the requirements of compact battery pack structure.

[0024] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0026] Figure 1 is a schematic structural diagram of a circuit breaker provided in an embodiment of the present disclosure;

[0027] Figure 2is a schematic diagram of the structure of a connector provided by an embodiment of the present disclosure;

[0028] Figure 3 is a structural schematic diagram of a first shell provided by an embodiment of the present disclosure;

[0029] Figure 4 is a structural schematic diagram of a second housing provided by an embodiment of the present disclosure;

[0030] Figure 5 is a schematic structural diagram of a third housing provided in an embodiment of the present disclosure;

[0031] Figure 6 is a cross-sectional schematic diagram of a circuit breaker device provided in an embodiment of the present disclosure;

[0032] Figure 7 is a partial enlarged schematic diagram of point A provided in an embodiment of the present disclosure;

[0033] Figure 8 is a cross-sectional schematic diagram of a circuit breaker device provided by another embodiment of the present disclosure;

[0034] Fig. 9 is a partial enlarged schematic diagram of point B provided in an embodiment of the present disclosure;

[0035] Fig.10 is an exploded schematic diagram of a circuit breaker device provided by an embodiment of the present disclosure;

[0036] Fig.11 is a partial structural schematic diagram of a battery pack provided by an embodiment of the present disclosure;

[0037] Fig.12 is an exploded schematic diagram of a battery pack provided by an embodiment of the present disclosure;

[0038] Fig.13 is a schematic diagram of the structure of a battery pack provided by an embodiment of the present disclosure;

[0039] Fig.14 Schematic diagram of a circuit of a battery pack provided in an embodiment of the present disclosure.

[0040] Description of Reference Numerals

[0041] 100-circuit breaker; 110-housing; 111-first housing; 1111-first main body; 1112-baffle; 1113-first side plate; 1114-second side plate; 112-second housing; 1121-second main body; 1122-first plate body; 1123-second plate body; 113-third housing; 1231-first housing cover; 1232-second housing cover; 114-fourth housing; 115-first avoidance; 116-second avoidance; 117-installation cavity; 118-fixing seat; 1181-cavity; 120-connecting piece; 121-main body; 1211-first plate segment; 1212-second plate segment; 1213-third plate segment; 1214-weak part; 122-first connecting piece part; 123-second connecting part; 130-cutting piece; 131-seat; 132-cutting blade; 140-actuating assembly; 141-signal terminal; 142-igniter; 143-blasting body; 144-coil; 145-magnet; 150-fastening bolt; 200-tray; 210-tray body; 211-supporting space; 212-bottom plate; 220-partition beam; 230-gap; 240-cover plate; 300-battery pack; 400-distribution module; 511-first battery pack; 512-second battery pack; 513-third battery pack; 514-fourth battery pack; 611-first distribution module; 612-second distribution module; 711-first circuit breaker; 712-second circuit breaker. DETAILED DESCRIPTION

[0042] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0043] In the present disclosure, unless otherwise specified, the directional words used, such as "inside" and "outside", generally refer to the "inside" and "outside" relative to the corresponding component's own outline, and the terms "first" and "second" are used to distinguish one element from another element, and do not have order and importance. In addition, in the following description, when referring to the drawings, unless otherwise explained, the same figure numbers in different drawings represent the same or similar elements. The above definitions are only used to explain and illustrate the present disclosure and should not be understood as limitations on the present disclosure.

[0044] According to the specific implementation scheme provided by the present disclosure, Figures 1 to 14 As shown in the figure, a circuit breaker device 100 is provided, including a shell 110 and a connector 120 installed in the shell 110, the connector 120 includes a main body 121, a first connecting part 122 and a second connecting part 123, the first connecting part 122 and the second connecting part 123 are respectively connected to the main body 121 and are arranged at the same end of the shell 110.

[0045] Through the above technical solution, when the circuit breaker device 100 provided by the present invention is applied to the technical field of battery protection, the first connecting portion 122 and the second connecting portion 123 arranged at the same end of the connecting piece are generally used to connect two adjacent battery packs 300, that is, the ports for connecting the lead-out terminals of the two battery packs 300 can be arranged on the same side of the circuit breaker device 100. In this way, the space occupied by the circuit breaker device 100 in the battery pack can be reduced, meeting the requirements of compact battery pack structure.

[0046] In the circuit breaker device 100 provided in the present disclosure, the connector 120 may be constructed in any suitable manner, and the present disclosure does not impose any specific limitation on this. Figure 1 As shown in the figure, the two ends of the main body 121 can be bent respectively to form the first connecting part 122 and the second connecting part 123, that is, the main body 121 and the first connecting part 122 and the second connecting part 123 are integrally formed to reduce the resistance of the connecting member 120, and the first connecting part 122 and the second connecting part 123 at least partially fit the shell 110, that is, the shell 110 is arranged as close to the connecting member 120 as possible. In this way, not only the volume of the circuit breaker device 100 can be further reduced, but also the stability of the installation of the connecting member 120 in the shell 110 can be improved.

[0047] In the circuit breaker device 100 provided in the present disclosure, the main body 121 can be constructed in any suitable form, and the present disclosure does not impose any specific limitation on this. Figure 1 As shown in , the main body 121 may include a first plate segment 1211, a second plate segment 1212 and a third plate segment 1213. The second plate segment 1212 and the third plate segment 1213 may be respectively connected to both ends of the first plate segment 1211 and arranged on the same side of the first plate segment 1211, that is, the second plate segment 1212 and the third plate segment 1213 may extend toward the same side of the main body 121, so as to further shorten the size of the connector 120 in the extension direction of the first connection portion 122 and the second connection portion 123, and reduce the volume of the circuit breaker 100. Among them, the second plate segment 1212 may be bent away from the third plate segment 1213 to form the first connection portion 122, and the third plate segment 1213 may be bent toward the second plate segment 1212 to form the second connection portion 123, with reference to Figure 1 As shown in , the second plate segment 1212 and the third plate segment 1213 are bent in the same direction, thereby forming the first connecting portion 122 and the second connecting portion 123 .

[0048] In the circuit breaker device 100 provided in the present disclosure, in order to facilitate the packaging of the connector 120 in the housing 110, the housing 110 can be constructed in any suitable form, and the present disclosure does not impose any specific limitation on this. Figures 2 to 10As shown in , the shell may include a first shell 111, a second shell 112 and a third shell 113, the first shell 111 may be arranged between the second plate segment 1212 and the third plate segment 1213, the second shell 112 and the third shell 113 may be arranged on opposite sides of the first shell 111, and connected to the first shell 111, the first connecting portion 122 is attached to the second shell 112, and the second connecting portion 123 is attached to the first shell 111, wherein the second shell 112 and the third shell 113 respectively cover part of the connecting member 120, to protect the exposed part of the connector 120, the first shell 111 is arranged in the space formed by the first plate segment 1211, the second plate segment 1212 and the third plate segment 1213 of the connector 120, and is used to support the connector 120 to prevent the connector 120 from being deformed or damaged due to being squeezed during long-term use, thereby causing the connector 120 to be unable to cut off normally or unable to connect two electrical components (such as the battery pack 300 and other electrical components) normally, thereby improving the reliability of the circuit breaker 100.

[0049] The first housing 111 can be configured in any suitable shape, and the present disclosure does not impose any specific limitation on this. Figure 3 As shown in, the first shell 111 may include a first main body 1111 and a baffle 1112, the first main body 1111 may be arranged between the second plate segment 1212 and the third plate segment 1213, the baffle 1112 protrudes from the first main body 1111 and is used to block the first connection part 122 and the second connection part 123, wherein one side of the first main body 1111 is in contact with the second plate segment 1212 to achieve the positioning of the first shell 111 during installation, the setting of the baffle 1112 can avoid the first connection part 122 from contacting the second connection part 123, and prevent the first connection part 122 from being connected to the second connection part 123, that is, it can avoid the situation where two electrical components (such as electrical components such as the battery pack 300) can still be connected through the first connection part 122 and the second connection part 123 that are in contact with each other or too close to each other when the connecting component 120 is cut off, thereby improving the reliability of the circuit breaker 100.

[0050] The second housing 112 may also be configured in any suitable shape, and the present disclosure does not impose any specific limitation on this. Figure 4As shown in the figure, the second shell 112 may include a second main body 1121 and a baffle plate, the baffle plate protrudes from the second main body 1121 and includes a first plate body 1122 and a second plate body 1123, the first plate body 1122 is connected to the second plate body 1123 and is set at an angle, the first shell 111 may include a first side plate 1113 and a second side plate 1114, the first side plate 1113 may be connected to the first plate body 1122 to improve the sealing of the circuit breaker device 100 and prevent other components from contacting the connecting piece 120.

[0051] The first side plate 1113 and the second side plate 1114 can be connected to opposite ends of the baffle 1112, respectively. The second plate body 1123 is arranged opposite to the baffle 1112, and a first avoidance opening 115 is formed between the second side plate 1114 and the second plate body 1123. In this embodiment, the first side plate 1113 and the second side plate 1114 respectively cover the two sides of the second plate segment 1212 of the connector 120 to protect the exposed part of the connector 120. The first avoidance opening 115 is used to avoid the installation between the first connecting portion 122 and the electrical component, thereby realizing the conduction between the connector 120 and the electrical component (such as the battery pack 300, etc.).

[0052] The third housing 113 may also be configured in any suitable shape, and the present disclosure does not impose any specific limitation on this. Figure 5 As shown in the figure, the third shell body 113 may include a first shell cover 1231, the first shell cover 1231 is connected to the second side plate 1114 and the first main body 1111, and a second avoidance opening 116 is formed between the first shell cover 1231 and the baffle 1112, wherein the first shell cover 1231 is used to cover one side of the third plate segment 1213 of the connector 120, and the other side of the third plate segment 1213 is covered by the second side plate 1114 to protect the exposed part of the connector 120, and the second avoidance opening 116 is used to avoid the installation between the second connecting part 123 and the electrical component, and cooperates with the first avoidance opening 115 to realize the conduction between any two electrical components of the connector 120.

[0053] In addition, the third shell 113 can also include a second shell cover 1232. The first shell cover 1231 can be connected to the second shell cover 1232 and set at an angle. The second shell cover 1232 is attached to the first plate segment 1211, and the second shell cover 1232 extends to connect with the second main body 1121. That is to say, the second shell cover 1232 can completely cover the first plate segment 1211. In this way, the packaging of the connector 120 is achieved through the cooperation of the first shell 111, the second shell 112 and the third shell 113. Only the first connecting part 122 and the second connecting part 123 of the connector 120 are exposed on the outside of the shell 110, so as to be used for electrical connection with two electrical components respectively.

[0054] Among them, the first shell 111, the second shell 112 and the third shell 113 can all be made of insulating materials to prevent the connecting piece 120 from contacting and conducting with other components through the first shell 111, the second shell 112 and the third shell 113, thereby improving the safety of the battery pack. The present disclosure does not make any specific restrictions on this.

[0055] In the circuit breaker device provided by the present disclosure, the circuit breaker device 100 can realize its own circuit breaking in any suitable manner, and the present disclosure does not impose any specific restrictions on this. As an exemplary embodiment, the circuit breaker device 100 may include a cut-off member 130 and an actuating assembly 140, the cut-off member 130 and the actuating assembly 140 are installed in the housing 110, and the actuating assembly 140 can drive the cut-off member 130 to move toward the connecting member 120 to cut off the main body 121, wherein the actuating assembly 140 can be connected to a controller or a control system of an electrical device in actual application, and after the controller sends a cut-off signal, the actuating assembly 140 drives the cut-off member 130 to move toward the connecting member 120 to cut off the connecting member 120, thereby realizing the circuit breaking of the circuit breaker device 100.

[0056] The cutting piece 130 may be constructed in any suitable form to cut off the main body 121 of the connecting piece 120, and the present disclosure does not impose any specific limitation on this. Figures 6 to 9 As shown in the figure, the cutting piece 130 may include a seat body 131 and a cutting blade 132. The cutting blade 132 may be connected to the seat body 131 and arranged toward the main body 121. The actuating assembly 140 may provide a driving force for the cutting piece 130 so as to drive the cutting piece 130 to move toward the main body 121 and cut off the main body 121, thereby cutting off the connecting piece 120.

[0057] The main body 121 may be provided with a weak portion 1214, and the cutting blade 132 may be arranged toward the weak portion 1214, so that the cutting blade 132 can cut the main body 121, that is, the connector 120, to achieve disconnection between several electrical components connected through the connector 120. In the present disclosure, the weak portion 1214 may be set as a narrower portion of the main body 121, or set to have a smaller thickness on the movement path of the cutting blade 132, so as to ensure that the cutting blade 132 can smoothly cut the connector 120, thereby achieving the disconnection of the circuit breaker device 100.

[0058] The actuating assembly 140 may be constructed in any suitable form, and the present disclosure does not impose any specific limitation on this. Figure 6 and Figure 7As shown in , the actuating assembly 140 may include a signal terminal 141, an igniter 142 and an explosive body 143. The shell 110 is formed with a mounting cavity 117, and the base 131 is formed with a receiving seat. The explosive body 143 is at least partially received in the receiving seat. The igniter 142 and the signal terminal 141 are electrically connected and installed in the mounting cavity 117. The igniter 142 can be located between the signal terminal 141 and the explosive body 143. The signal terminal 141 is used to receive a signal from the controller to control the igniter 142 to ignite the explosive body 143. The explosive body 143 explodes, thereby generating a thrust that pushes the cutting blade away from the base 131, that is, a force that moves the cutting blade 132 toward the weak portion 1214 of the connector 120, thereby achieving the cutting of the connector 120.

[0059] As another exemplary embodiment, refer to Figure 8 and Fig. 9 As shown in, the actuating assembly 140 may include a signal terminal 141, a coil 144 and a magnet 145. The housing 110 may be formed with an installation cavity 117 and provided with a fixing seat 118. The fixing seat 118 may be fixed in the installation cavity 117 and formed with a cavity 1181. The signal terminal 141 may be fixedly installed in the installation cavity 117 and electrically connected to the coil 144. The coil 144 may be wound on the outer wall of the fixing seat 118. The magnet 145 may be located in the cavity 1181 and fixedly connected to the cutting piece 130. The signal terminal 141 is used to receive a signal from a controller to control the coil 144 to be energized to form a magnetic field. Under the influence of the magnetic field, the magnet 145 drives the cutting piece 130 to move toward the weak portion 1214 of the connecting piece 120 to cut off the connecting piece 120.

[0060] In the above two exemplary embodiments, the housing 110 may further include a fourth housing 114, which is disposed between the second housing 112 and the first housing 111, and the second housing 112 and the fourth housing 114 share the above-mentioned mounting cavity 117. The second housing 112, the fourth housing 114 and the first housing 111 may be fixed in any suitable manner, and the present disclosure does not impose any specific restrictions on this. As an exemplary embodiment, reference is made to Fig.10 As shown in FIG, the first housing 111, the second housing 112 and the fourth housing 114 can be fixed together by fastening bolts 150. In addition, the first housing 111, the second housing 112, the third housing 113 and the fourth housing 114 can also be fixedly connected by a snap-fit ​​structure, which is not specifically limited in the present disclosure.

[0061] In some other embodiments, the connector 120 may also be passively blown. Specifically, when the circuit breaker 100 provided in the present disclosure is applied to the technical field of battery protection, the connector 120 may be constructed as a fuse. In this way, when the battery pack is overloaded for a long time or a short circuit occurs, the heat of the fuse itself increases and the temperature rises, thereby achieving passive blowing, which can also play a role in protecting the circuit. The present disclosure does not impose any specific restrictions on this.

[0062] Based on the above technical solution, the present disclosure provides a battery pack, referring to Figures 11 to 14 As shown in the figure, the battery pack includes a first electrical component, a second electrical component and the above-mentioned circuit breaker 100, and the circuit breaker 100 is used to conduct or cut off the electrical connection between the first electrical component and the second electrical component, wherein the circuit breaker 100 has all the technical features of the above-mentioned circuit breaker 100, so it is not repeated here. In the battery pack provided in the present disclosure, as an exemplary embodiment, reference Fig.11 and Fig.12 As shown in , the first electrical component may be a first battery pack 511, the second electrical component may be a second battery pack 512, the battery pack may include a tray 200 and a circuit breaker 100, the tray 200 may include a tray body 210 and a partition beam 220, the tray body 210 is formed with a supporting space 211, the partition beam 220 is used to separate the supporting space 211, the first battery pack 511 and the second battery pack 512 may be respectively arranged on both sides of the partition beam 220, and the circuit breaker 100 may be arranged on the partition beam 220. In this way, the circuit breaker 100 is arranged inside the battery pack, the tray 200 can provide certain protection for the circuit breaker 100, and prevent the circuit breaker 100 from falling out of the battery pack. In addition, the circuit breaker 100 can cooperate with the size of the gap 230 to achieve the fixation of its own position, and at the same time can also reduce the volume of the battery pack, improve the energy density of the battery pack, and meet the requirements of the compact structure of the battery pack.

[0063] The circuit breaker device 100 can be arranged on the partition beam 220 in any suitable manner, and the present disclosure does not impose any specific restrictions on this. As an exemplary embodiment, the partition beam 220 can be partially hollowed out or recessed toward the tray body to form a gap that can accommodate the circuit breaker device 100. At this time, the first battery pack 511 and the second battery pack 512 are arranged on both sides of the partition beam 220 to limit the position of the circuit breaker device 100. In addition, the gap can be formed at any suitable position on the partition beam 220, and the present disclosure does not impose any specific restrictions on this.

[0064] In addition, the tray body 210 can achieve its own sealing by any suitable method, that is, achieve the sealing of the supporting space 211, and the present disclosure does not make any specific restrictions on this. As an exemplary embodiment, refer to Fig.13As shown in , the tray 200 may further include a cover plate 240 for sealing the supporting space 211, and the cover plate 240 may be fixed to the tray 200 body by any suitable means, such as bonding, clamping, etc., and the present disclosure does not impose any specific limitation on this.

[0065] In the battery pack provided in the present disclosure, as an exemplary embodiment, reference is made to Fig.11 and Fig.12 As shown in , the battery pack may also include a power distribution module 400, which is arranged in the supporting space 211 and electrically connected to the battery pack 300, so as to distribute the power generated by the battery pack 300 to different electrical devices according to different loads, wherein the setting of the power distribution module 400 being electrically connected to the circuit breaker 100 can also enable the power distribution module 400 to send a signal to drive the circuit breaker 100 to work when the temperature of the battery pack is too high or overloaded, so as to realize the active fusing of the battery pack circuit by the circuit breaker 100. In addition, the circuit breaker 100 can also be used to connect the battery pack 300 and the power distribution module 400, and the circuit breaker 100 disconnects the electrical connection between the power distribution module 400 and the battery pack 300 to realize the disconnection of the battery pack circuit, which can also improve the safety of the battery pack, and the present disclosure does not make specific restrictions on this.

[0066] In the battery pack provided in the present disclosure, as an exemplary embodiment, reference is made to Fig.11 and Fig.12 As shown in , the battery pack may also include a power distribution module 400, and the circuit breaker device 100 may include a signal terminal 141. The power distribution module 400 is electrically connected to the signal terminal 141, so that when the battery pack temperature is too high or overloaded, the power distribution module 400 sends a signal to drive the circuit breaker device 100 to work, thereby realizing active fusing of the battery pack circuit by the circuit breaker device 100.

[0067] In summary, reference Fig.14As shown in, as an exemplary embodiment, the battery pack may include four battery groups 300, two power distribution modules 400 and two circuit breaking devices 100. For the convenience of description, the four battery groups 300 are respectively a first battery group 511, a second battery group 512, a third battery group 513, and a fourth battery group 514. The two power distribution modules 400 are respectively a first power distribution module 611 and a second power distribution module 612. The two circuit breaking devices 100 are respectively a first circuit breaking device 711 and a second circuit breaking device 712. Among them, the negative electrode of the first battery group 511 and the positive electrode of the second battery group 512 are electrically connected to the first circuit breaker 711 respectively, the negative electrode of the second battery group 512 and the positive electrode of the third battery group 513 are electrically connected to the first power distribution module 611 respectively, the negative electrode of the third battery group 513 and the positive electrode of the fourth battery group 514 are electrically connected to the second circuit breaker 712 respectively, and the negative electrode of the fourth battery group 514 and the positive electrode of the first battery group 511 are electrically connected to the second power distribution module 612 respectively. In this way, the series connection between the electrical components is realized, and the first circuit breaker 711 and the second circuit breaker 712 are respectively connected between the first battery group 511 and the second battery group 512 and the third battery group 513 and the fourth battery group 514. When a short circuit occurs in the battery pack, the first circuit breaker 711 or the second circuit breaker 712 is passively disconnected due to the increase of temperature to realize the disconnection between the battery groups. In addition, the first circuit breaker device 711 and the second circuit breaker device 712 can also be connected to the first distribution module 611 and the second distribution module 612 respectively. When the battery pack has abnormal signals such as voltage, current, temperature, etc., they can be actively disconnected, thereby achieving disconnection between battery groups. In this way, the protection range of the first circuit breaker device 711 and the second circuit breaker device 712 for the battery pack circuit can be effectively improved.

[0068] It should be noted that, in some other embodiments, the number of battery packs can be arbitrarily set according to actual conditions, and is not limited to four, but can also be one, two, three, five or more. The battery packs can also be connected in series, in parallel, or in series and in parallel to achieve connectivity between the multiple battery packs, which can also achieve the above-mentioned effects. The present disclosure does not impose any specific restrictions on this.

[0069] On the basis of the above technical solution, the present disclosure further provides an electric device, which includes the battery pack according to the above, and the battery pack has all the technical features of the above battery pack, so it is not described here. The electric device can be any suitable electronic device such as a vehicle, an energy storage cabinet, an aircraft, etc., and the present disclosure does not make specific restrictions on this.

[0070] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0071] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0072] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A circuit breaker device, characterized in that: It comprises a shell and a connecting piece installed in the shell, wherein the connecting piece comprises a main body, a first connecting part and a second connecting part, wherein the first connecting part and the second connecting part are respectively connected to the main body and are arranged at the same end of the shell.

2. The circuit breaker device according to claim 1, characterized in that: Two ends of the main body are respectively bent to form the first connecting portion and the second connecting portion, and the first connecting portion and the second connecting portion at least partially fit the shell.

3. The circuit breaker device according to claim 2, characterized in that: The main body includes a first plate segment, a second plate segment and a third plate segment, wherein the second plate segment and the third plate segment are respectively connected to two ends of the first plate segment and are arranged on the same side of the first plate segment. The second plate segment is bent away from the third plate segment to form the first connecting portion, and the third plate segment is bent toward the second plate segment to form the second connecting portion.

4. The circuit breaker device according to claim 3, characterized in that: The housing comprises a first housing, a second housing and a third housing, The first shell is disposed between the second plate segment and the third plate segment, and the second shell and the third shell are disposed on opposite sides of the first shell, respectively, and are connected to the first shell. The first connection portion is attached to the second shell, and the second connection portion is attached to the first shell.

5. The circuit breaker device according to claim 4, characterized in that: The first shell includes a first main body and a baffle, the first main body is arranged between the second plate segment and the third plate segment, and the baffle protrudes from the first main body and is used to block the first connecting portion and the second connecting portion.

6. The circuit breaker device according to claim 5, characterized in that: The second shell includes a second main body and a baffle plate, wherein the baffle plate protrudes from the second main body and includes a first plate body and a second plate body, wherein the first plate body is connected to the second plate body and is arranged at an angle.

7. The circuit breaker device according to claim 6, characterized in that: The first shell includes a first side plate and a second side plate, the first side plate and the second side plate are respectively connected to the opposite ends of the baffle, the first side plate is connected to the first plate body, the second plate body is arranged opposite to the baffle and a first avoidance opening is formed between the second side plate and the second plate body.

8. The circuit breaker device according to claim 7, characterized in that: The third shell includes a first shell cover, the first shell cover is connected to the second side plate and the first main body, and a second avoidance opening is formed between the first shell cover and the baffle.

9. The circuit breaker device according to claim 8, characterized in that: The third shell body further includes a second shell cover, the first shell cover is connected to the second shell cover and is arranged at an angle, the second shell cover is fitted to the first plate segment, and the second shell cover extends to connect with the second body.

10. The circuit breaker device according to any one of claims 1 to 9, characterized in that: The circuit breaker device comprises a cut-off piece and an actuating assembly, wherein the cut-off piece and the actuating assembly are installed in the housing, and the actuating assembly can drive the cut-off piece to move toward the connecting piece to cut off the main body.

11. The circuit breaker device according to claim 10, characterized in that: The cutting piece comprises a seat body and a cutting edge, wherein the cutting edge is connected to the seat body and arranged toward the main body.

12. The circuit breaker device according to claim 11, characterized in that: The main body is provided with a weak portion, and the cutting edge is arranged toward the weak portion.

13. The circuit breaker device according to claim 11, characterized in that: The actuating assembly includes a signal terminal, an igniter and a bursting body. The shell is formed with a mounting cavity. The bursting body is at least partially accommodated in the seat. The igniter is electrically connected to the signal terminal and mounted in the mounting cavity. The igniter is located between the signal terminal and the bursting body.

14. The circuit breaker device according to claim 11, characterized in that: The actuating assembly includes a signal terminal, a coil and a magnet. The shell is formed with an installation cavity and is provided with a fixing seat. The fixing seat is fixed in the installation cavity and forms a cavity. The signal terminal is fixedly installed in the installation cavity and is electrically connected to the coil. The coil is wound on the outer wall of the fixing seat. The magnet is located in the cavity and is fixedly connected to the cutting piece.

15. A battery pack, characterized in that: The battery pack includes a first electrical component, a second electrical component, and a circuit breaker according to any one of claims 1 to 14, wherein the circuit breaker is used to switch on or off the electrical connection between the first electrical component and the second electrical component.

16. The battery pack according to claim 15, characterized in that: The first electrical component is a first battery pack, the second electrical component is a second battery pack, the battery pack includes a tray, the tray includes a tray body and a partition beam, the tray body forms a supporting space, the partition beam is used to separate the supporting space, the first battery pack and the second battery pack are arranged on both sides of the partition beam, and the circuit breaker is arranged on the partition beam.

17. The battery pack according to claim 15 or 16, characterized in that: The battery pack further includes a power distribution module, the circuit breaker device includes a signal terminal, and the power distribution module is electrically connected to the signal terminal.

18. An electrical equipment, characterized in that: The electrical equipment comprises a battery pack according to any one of claims 15-17 or a circuit breaker according to any one of claims 1-14.

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