Battery pack and electric equipment

Abstract

The utility model relates to a battery pack and electric equipment, the battery pack comprises a tray and a circuit breaking device, the tray comprises a tray body and a separation beam, the tray body forms a bearing space, the separation beam is used for separating the bearing space, a gap is formed between the separation beam and the tray body, and the circuit breaking device is arranged between the tray body and the separation beam. And the circuit breaking device is arranged in the gap. Through the technical scheme, the battery pack provided by the utility model is compact in structure, and the safety of electric equipment can be improved.

Description

Technical Field

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

[0002] The battery pack is usually equipped with a circuit breaker, which is used to cut off the circuit to ensure the safety of the entire system when the voltage is too high or the battery temperature is too high. In the related art, the circuit breaker is usually installed on the outside or side of the battery pack. This setting method cannot maximize the use of the battery pack space, cannot meet the requirements of compact battery pack volume, and affects the energy density and battery life of the battery pack. Utility Model Content

[0003] An object of the present disclosure is to provide a battery pack and an electrical device, wherein the battery pack has a compact structure and can improve the safety of the electrical device.

[0004] In order to achieve the above-mentioned purpose, the present disclosure provides a battery pack, including a tray and a circuit breaker device, the tray including a tray body and a partition beam, the tray body forms a supporting space, the partition beam is used to separate the supporting space, and a gap is formed between the partition beam and the tray body, and the circuit breaker device is arranged in the gap.

[0005] Optionally, the gap is formed between the end of the partition beam and the tray body; or, a notch is provided at the end of the partition beam, and the gap is formed between the notch and the tray body.

[0006] Optionally, two side surfaces of the circuit breaker device in the first direction are respectively flush with two side surfaces of the partition beam in the first direction.

[0007] Optionally, the circuit breaker device includes a shell and a connector installed in the shell, the connector includes 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 are arranged at the same end of the main body.

[0008] Optionally, the tray body includes a bottom plate, and the first connecting portion and the second connecting portion are arranged away from the bottom plate.

[0009] 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.

[0010] 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 cutting piece, the igniter and the signal terminal are electrically connected and mounted in the mounting cavity, and the igniter is located between the signal terminal and the blasting body.

[0011] Optionally, the battery pack includes at least two battery groups, any two adjacent battery groups are separated by the partition beam, and any two adjacent battery groups are electrically connected to the first connecting portion and the second connecting portion, respectively.

[0012] Optionally, the battery pack further includes a power distribution module, which is disposed in the supporting space and electrically connected to the circuit breaker device.

[0013] Optionally, there are two power distribution modules, which are arranged on two opposite sides of the tray body.

[0014] On the basis of the above technical solution, the present disclosure further provides an electrical device, which includes the above battery pack.

[0015] Through the above technical solution, in the battery pack provided by the present disclosure, the tray body is formed with a supporting space, the partition beam is used to separate the supporting space and form a gap with the tray body, and the circuit breaker is arranged in the gap, so that the circuit breaker is arranged inside the battery pack, and the tray can provide a certain protection for the circuit breaker to prevent the circuit breaker from escaping from the battery pack. At the same time, the circuit breaker is arranged in the gap formed between the partition beam and the tray body, and the circuit breaker can cooperate with the size of the gap to achieve the fixation of its own position, thereby realizing the use of the supporting space formed by the tray body itself to arrange the circuit breaker, so as to 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.

[0016] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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:

[0018] Figure 1 is a schematic diagram of the structure of a battery pack provided by an embodiment of the present disclosure;

[0019] Figure 2 is an exploded schematic diagram of a battery pack provided by an embodiment of the present disclosure;

[0020] Figure 3is a schematic diagram of the structure of a battery pack provided by an embodiment of the present disclosure;

[0021] Figure 4 is a schematic diagram of the structure of a connector provided by an embodiment of the present disclosure;

[0022] Figure 5 is a schematic structural diagram of a circuit breaker provided in an embodiment of the present disclosure;

[0023] Figure 6 is a structural schematic diagram of a first shell provided by an embodiment of the present disclosure;

[0024] Figure 7 is a structural schematic diagram of a second housing provided by an embodiment of the present disclosure;

[0025] Figure 8 is a schematic structural diagram of a third housing provided in an embodiment of the present disclosure;

[0026] Fig. 9 is a cross-sectional schematic diagram of a circuit breaker device provided in an embodiment of the present disclosure;

[0027] Fig.10 is a partial enlarged schematic diagram of point A provided in an embodiment of the present disclosure;

[0028] Fig.11 is a cross-sectional schematic diagram of a circuit breaker device provided by another embodiment of the present disclosure;

[0029] Fig.12 is a partial enlarged schematic diagram of point B provided in an embodiment of the present disclosure;

[0030] Fig.13 is an exploded schematic diagram of a circuit breaker device provided by an embodiment of the present disclosure;

[0031] Fig.14 Schematic diagram of a circuit of a battery pack provided in an embodiment of the present disclosure.

[0032] Description of Reference Numerals

[0033] 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

[0034] 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.

[0035] 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.

[0036] According to the specific implementation scheme provided by the present disclosure, Figures 1 to 13 As shown in the figure, a battery pack is provided, including a tray 200 and a circuit breaker device 100, the tray 200 includes 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, and a gap 230 is formed between the partition beam 220 and the tray body 210, and the circuit breaker device 100 is arranged in the gap 230.

[0037] Through the above technical solution, in the battery pack provided by the present disclosure, the tray body 210 is formed with a supporting space 211, the partition beam 220 is used to separate the supporting space 211 and form a gap 230 with the tray body 210, and the circuit breaker 100 is arranged in the gap 230, so that the circuit breaker 100 is arranged inside the battery pack, and the tray 200 can provide a certain protection for the circuit breaker 100 to prevent the circuit breaker 100 from escaping from the battery pack. At the same time, the circuit breaker 100 is arranged in the gap 230 formed between the partition beam 220 and the tray body 210, that is, the space required for the partition beam 220 to accommodate the circuit breaker 100, and 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.

[0038] It should be noted here that the partition beam 220 can divide the supporting space 211 in any suitable form. In the technical field of battery packs, the partition beam 220 can be used only to divide the supporting space 211 into space units of different sizes suitable for the installation of battery packs 300 and distribution modules 400. Alternatively, the battery pack has several battery packs 300, and the partition beam 220 can be used to divide the supporting space 211 into several space units of uniform size suitable for the installation of a single battery pack 300. Accordingly, the gap 230 can also be set at any suitable position according to the different arrangements of the partition beam 220, and the present disclosure does not impose specific restrictions on this.

[0039] In the battery pack provided by the present disclosure, the gap 230 can be formed in any suitable manner, and the present disclosure does not impose any specific limitation on this. Figure 2 As shown in , a gap 230 can be formed between the end of the partition beam 220 and the tray body 210, that is, in actual application, the end of the partition beam 220 is not connected to the tray body 210, but a gap 230 is formed for the circuit breaker device 100 to be accommodated in the gap 230.

[0040] In some other embodiments, the end of the partition beam 220 may be provided with a notch, and a gap 230 is formed between the notch and the tray body 210. That is, the end of the partition beam 220 facing the tray body 210 may be partially recessed to form a notch, so that the end portion of the partition beam 220 is fixed to the tray body 210, and partially recessed to form the gap 230, and the circuit breaker device 100 can also be accommodated in the gap 230. In addition, the gap 230 can be formed at any suitable position on the partition beam 220, and the present disclosure does not impose any specific limitation on this.

[0041] In the battery pack provided by the present disclosure, the circuit breaker device 100 can be arranged in the gap 230 in any suitable manner, and the present disclosure does not impose any specific restrictions on this. As an exemplary embodiment, the two side surfaces of the circuit breaker device 100 in the first direction can be flush with the two side surfaces of the partition beam 220 in the first direction, respectively. Among them, the partition beam 220 is usually used in the battery pack to divide the supporting space 211 formed by the tray body 210 into a number of space units for accommodating the battery pack 300, so that the partition beam 220 is usually arranged in coordination with the shape of the electrical components, and the two side surfaces of the circuit breaker device 100 are flush with the two side surfaces of the partition beam 220, which can avoid the circuit breaker device 100 interfering with the installation of the battery pack 300, and when the battery pack 300 is abutted on both sides of the partition beam 220, the circuit breaker device 100 can be abutted against the electrical component through the abutment between the battery pack 300 and the partition beam 220, thereby achieving the fixation of the position of the circuit breaker device 100, thereby improving the structural compactness of the battery pack. It should be explained here that the first direction refers to Figure 1 The horizontal direction in the drawing, in actual application, the first direction may also refer to the direction extending along the length or width of the circuit breaker device 100, so as to ensure that when the circuit breaker device 100 is installed in the gap 230 and the electrical components are accommodated in the supporting space 211, the side surfaces of the circuit breaker device 100 do not protrude from the two sides of the partition beam 220, and will not interfere with the installation of the electrical components, and on the other hand, they will not be recessed relative to the two side surfaces of the partition beam 220, so that the circuit breaker device 100 can be clamped and fixed by the electrical components, thereby limiting the position of the circuit breaker device 100. In the battery pack provided in the present disclosure, the circuit breaker device 100 can be constructed in any suitable manner, and the present disclosure does not impose any specific restrictions on this. As an exemplary embodiment, refer to Figure 4 As shown in , the circuit breaker device 100 may include a shell 110 and a connector 120 installed in the shell 110. The connector 120 may include a main body 121, a first connecting portion 122 and a second connecting portion 123. The first connecting portion 122 and the second connecting portion 123 are respectively connected to the main body 121 and are arranged at the same end of the main body 121. In this way, the two lead terminals for connecting the two electrical components can be arranged on the same side of the circuit breaker device 100, which is not only convenient for the installation of the lead terminals but also can reduce the space occupied by the circuit breaker device 100 in the battery pack, thereby meeting the requirements of compact battery pack structure.

[0042] In the battery pack provided in the present disclosure, the housing 110 of the circuit breaker device 100 may be constructed in any suitable form, and the present disclosure does not impose any specific limitation on this. Figures 5 to 8As shown in , the housing 110 may include a first housing 111, a second housing 112 and a third housing 113, the first housing 111 may be disposed between the second plate segment 1212 and the third plate segment 1213, the second housing 112 and the third housing 113 may be disposed on opposite sides of the first housing 111, and connected to the first housing 111, the first connecting portion 122 is attached to the second housing 112, the second connecting portion 123 is attached to the first housing 111, wherein the second housing 112 and the third housing 113 respectively cover a portion of the connecting portion. The first shell 111 is arranged in a space formed by the first plate segment 1211, the second plate segment 1212 and the third plate segment 1213 of the connecting member 120, and is used to support the connecting member 120 to prevent the connecting member 120 from being deformed or damaged due to being squeezed during long-term use, thereby causing the connecting member 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) to appear, thereby improving the reliability of the circuit breaker 100.

[0043] The first housing 111 can be configured in any suitable shape, and the present disclosure does not impose any specific limitation on this. Figure 6 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.

[0044] 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 7As shown in , 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 arranged 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 and the second side plate 1114 are respectively connected to the opposite ends of the baffle plate 1112, the first side plate 1113 is connected to the first plate body 1122, the second plate body 1123 is arranged opposite to the baffle plate 1112, and the second side plate 1114 is arranged opposite to the baffle plate 1112. A first avoidance opening 115 is formed between the first plate 1122 and the second plate 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 portion of the connector 120. The first plate 1122 is connected to the first side plate 1113 to improve the sealing of the circuit breaker device 100 and prevent other components from contacting 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 achieving conduction between the connector 120 and the electrical component (such as the battery pack 300, etc.).

[0045] 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 8 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.

[0046] 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.

[0047] 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.

[0048] In the battery pack provided in the present disclosure, the tray body 210 can be constructed in any suitable form, and the present disclosure does not impose any specific limitation on this. As an exemplary embodiment, refer to Figure 2 As shown in the figure, the tray body 210 may include a bottom plate 212, and the first connecting portion 122 and the second connecting portion 123 are arranged away from the bottom plate 212. In this way, when the battery pack provided by the present disclosure is assembled, the wiring harness for connecting the electrical components in the battery pack can be arranged after the battery pack 300 and the circuit breaker device 100 are installed, so as to avoid the situation where the wiring harness is installed first and caused by the battery pack 300 or the circuit breaker device 100. The first connecting portion 122 and the second connecting portion 123 are arranged away from the bottom plate 212 to facilitate the connection between the wiring harness and the circuit breaker device 100.

[0049] The circuit breaker device can be configured in any suitable form, 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 breaker device 100.

[0050] 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 9 to 12 As shown in the figure, the main body 121 can be provided with a weak portion 1214, and the cutting piece 130 includes a seat body 131 and a cutting blade 132, and the cutting blade 132 is connected to the seat body 131 and is arranged toward the weak portion 1214 of the connecting piece 120, wherein the weak portion 1214 can be set as a narrower part 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 smoothly cuts off the connecting piece 120, thereby realizing the circuit breaking of the circuit breaker device 100.

[0051] The actuating assembly 140 may be constructed in any suitable form, and the present disclosure does not impose any specific limitation on this. Fig. 9and Fig.10 As 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.

[0052] As another exemplary embodiment, refer to Fig.11 and Fig.12 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.

[0053] 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 first housing 111, the second housing 112, and the fourth housing 114 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 Figure 5 and Fig.13 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.

[0054] 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.

[0055] In the battery pack provided in the present disclosure, as an exemplary embodiment, reference is made to Figure 2 As shown in the figure, the battery pack may include at least two battery groups 300, any two adjacent battery groups 300 may be separated by a partition beam 220, and any two adjacent battery groups 300 may be electrically connected to the first connection portion 122 and the second connection portion 123, respectively. In this way, the circuit breaker device 100 is connected between the two battery groups 300, and the two battery groups 300 are conductively connected to each other through the circuit breaker device 100. When the battery pack temperature is too high or overloaded, the circuit breaker device 100 can disconnect the two battery groups 300, thereby improving the safety of the battery pack.

[0056] In the battery pack provided in the present disclosure, as an exemplary embodiment, reference is made to Figure 2 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.

[0057] The number of power distribution modules 400 may be any suitable number, and the present disclosure does not impose any specific limitation on this. Figure 2 As shown in , the number of the power distribution modules 400 can be two, and the two power distribution modules 400 can be respectively arranged on opposite sides of the tray 200 body 121 to minimize the volume of the battery pack occupied by the power distribution modules 400 and meet the requirements of compact battery pack structure.

[0058] 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 Figure 3 As 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.

[0059] In summary, reference Fig.14 As shown in, as an exemplary embodiment, the battery pack includes four battery groups 300, two power distribution modules 400 and two circuit breaker devices 100, which are respectively a first battery group 511, a second battery group 512, a third battery group 513, a fourth battery group 514, a first power distribution module 611, a second power distribution module 612, a first circuit breaker device 711 and a second circuit breaker device 712, wherein 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 power distribution module 611, respectively, and 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 circuit breaker device 711, respectively. The negative electrode of the third battery pack 513 and the positive electrode of the fourth battery pack 514 are electrically connected to the second power distribution module 612, respectively, and the negative electrode of the fourth battery pack 514 and the positive electrode of the first battery pack 511 are electrically connected to the second circuit breaker 712, 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 pack 511 and the second battery pack 512 and the third battery pack 513 and the fourth battery pack 514. When the battery pack is short-circuited, the first circuit breaker 711 or the second circuit breaker 712 is passively disconnected due to the increase of temperature to achieve disconnection between the battery packs. In addition, the first circuit breaker 711 and the second circuit breaker 712 can also be connected to the first power distribution module 611 and the second power distribution module 612, respectively, and can be actively disconnected when the battery pack has abnormal signals such as voltage, current, temperature, etc., thereby achieving disconnection between the battery packs. In this way, the protection range of the first circuit breaker 711 and the second circuit breaker 712 for the battery pack circuit can be effectively improved.

[0060] It should be noted that the above is only an embodiment of a four-module structure of the battery pack. In some other implementations, the number of modules can be arbitrarily set according to actual conditions, and the modules can be connected to each other in series, in parallel, or in series and in parallel to achieve the above-mentioned effects. The present disclosure does not impose any specific restrictions on this.

[0061] On the basis of the above technical solution, the present disclosure further provides an electric device, which includes the above battery pack, 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.

[0062] 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.

[0063] 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.

[0064] 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 battery pack, characterized in that: It comprises a tray and a circuit breaker device. The tray comprises a tray body and a partition beam. The tray body forms a supporting space. The partition beam is used to separate the supporting space. A gap is formed between the partition beam and the tray body. The circuit breaker device is arranged in the gap.

2. The battery pack according to claim 1, characterized in that: The gap is formed between the end of the partition beam and the pallet body; or, A notch is provided at the end of the partition beam, and the gap is formed between the notch and the tray body.

3. The battery pack according to claim 1 or 2, characterized in that: Two side surfaces of the circuit breaker in the first direction are respectively flush with two side surfaces of the partition beam in the first direction.

4. The battery pack according to claim 1, characterized in that: The circuit breaker device includes a shell and a connector installed in the shell, the connector includes 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 are arranged at the same end of the main body.

5. The battery pack according to claim 4, characterized in that: The tray body includes a bottom plate, and the first connecting portion and the second connecting portion are arranged away from the bottom plate.

6. The battery pack according to claim 4, 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.

7. The battery pack according to claim 6, characterized in that: The actuating assembly includes a signal terminal, an igniter and a bursting body, the housing is formed with a mounting cavity, the bursting body is at least partially accommodated in the cut-off piece, the igniter is electrically connected to the signal terminal and mounted in the mounting cavity, and the igniter is located between the signal terminal and the bursting body.

8. The battery pack according to claim 4, characterized in that: The battery pack includes at least two battery groups, any two adjacent battery groups are separated by the separation beam, and any two adjacent battery groups are electrically connected to the first connection portion and the second connection portion, respectively.

9. The battery pack according to claim 8, characterized in that: The battery pack further includes a power distribution module, which is disposed in the supporting space and is electrically connected to the circuit breaker.

10. The battery pack according to claim 9, characterized in that: The number of the power distribution modules is two, and the two power distribution modules are respectively arranged on two opposite sides of the tray body.

11. An electrical device, characterized in that: The electrical device comprises a battery pack according to any one of claims 1-10.

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