Battery pack and electric equipment

Abstract

The utility model discloses a battery pack and electric equipment. The battery pack comprises a frame, a battery cell, a detection device and a shielding device, a containing cavity suitable for containing the battery cell is formed in the frame, and a sliding rail is arranged on the frame; the plurality of battery cells are sequentially arranged in the accommodating cavity and are connected in series or in parallel; at least part of the detection device is arranged in the accommodating cavity and is connected with the battery cell, and the detection device is suitable for detecting the state of the battery cell in real time so as to detect a fault battery cell when a fault occurs; the shielding device is arranged on the sliding rail in a sliding manner, and the shielding device can move to the fault cell and is connected with the cells on the two sides of the fault cell so as to short-circuit the fault cell. According to the battery pack disclosed by the utility model, the detection device is arranged to detect the states of the battery cells in real time, and the shielding device can shield the faulty battery cells in time when the detection device detects the faulty battery cells, so that fault spreading is avoided, the safety of the battery pack is improved, and the battery pack can be continuously used without being disassembled and maintained when the faulty battery cells occur.

Description

Technical Field

[0001] The utility model relates to the field of batteries, in particular to a battery pack and electrical equipment. Background Art

[0002] As the power source for major new energy vehicles, battery packs are prone to single-cell failure during use. When a single-cell failure occurs in a battery pack, if it is not handled in a timely manner, the failure can easily spread and eventually cause the entire battery pack to fail. Moreover, when there is a faulty cell, it needs to be disassembled and replaced in a timely manner, which is time-consuming and labor-intensive, greatly increases costs, and may even affect the safety of electrical equipment. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a battery pack. According to the battery pack of the utility model, a detection device is set to detect the status of the battery cell in real time. When the detection device detects a faulty battery cell, the shielding device can timely shield the faulty battery cell to avoid the spread of the fault, thereby improving the safety of the battery pack. When a faulty battery cell occurs, the battery pack can continue to be used without disassembling the entire battery pack for repair.

[0004] The utility model also provides an electrical device comprising the battery pack.

[0005] According to the utility model, the battery pack includes a frame, a battery cell, a detection device and a shielding device. A accommodating cavity suitable for accommodating the battery cell is formed in the frame, and a slide rail is arranged on the frame; the battery cell is constructed in plurality and the plurality of battery cells are arranged in sequence in the accommodating cavity and are connected in series or in parallel with each other; at least a part of the detection device is arranged in the accommodating cavity and connected to the battery cell, and the detection device is suitable for detecting the status of the battery cell in real time to detect the faulty battery cell when a fault occurs; the shielding device is slidably arranged on the slide rail, and the shielding device can be moved to the faulty battery cell and connected to the battery cells on both sides of the faulty battery cell to short-circuit the faulty battery cell.

[0006] According to the utility model, a battery pack is provided with a frame, a receiving cavity for assembling electric cells is formed in the frame, a plurality of electric cells are arranged and stacked in sequence in the receiving cavity and connected in series with each other, a slide rail is provided on the frame, a shielding device is provided on the slide rail, the shielding device can shield the faulty electric cells, and a detection device is also provided in the receiving cavity, the detection device can detect the state of the electric cells. Specifically, at least part of the detection device is provided in the receiving cavity and connected to each electric cell, so as to detect the state of each electric cell in real time. When the detection device detects the faulty electric cell, the signal can be transmitted to the shielding device. After receiving the signal about the position of the faulty electric cell, the shielding device can move to the position of the faulty electric cell and connect to the electric cells on both sides of the faulty electric cell to short-circuit the faulty electric cell, thereby shielding the faulty electric cell, so that the faulty electric cell no longer participates in the work of the battery pack. The structure of the detection device and the shielding device enables the real-time state of multiple electric cells in the battery pack to be monitored. When the electric cell fails, the shielding device can timely shield the faulty electric cell, thereby avoiding the spread of the electric cell failure in the battery pack and ensuring the safety of the battery pack. At the same time, the battery pack can continue to be used without replacing the electric cell, thereby reducing the cost.

[0007] According to one embodiment of the utility model, the battery cell includes a plurality of first battery cells and a plurality of second battery cells that are alternately arranged, and the poles of the first battery cells and the second battery cells at one end on the same side have opposite polarities; the battery pack also includes a first connecting row and a second connecting row, the first connecting row is arranged at one end on the same side of one of the second battery cells and an adjacent one of the first battery cells, and the second connecting row is arranged at the other end on the same side of the same second battery cell and another adjacent one of the first battery cells, and the shielding device can selectively connect two adjacent first connecting rows or two adjacent second connecting rows.

[0008] According to one embodiment of the utility model, the shielding device includes a sliding part and a connecting part, the sliding part is movably arranged on the slide rail; the connecting part is connected to the sliding part, and the connecting part is suitable for connecting with two first connecting rows and / or two second connecting rows on both sides of the faulty battery cell when the detection device detects the faulty battery cell.

[0009] According to an embodiment of the present utility model, the shielding device further includes: a connecting member, which is disposed on the same side of the sliding portion and the connecting portion and connects the sliding portion with the connecting portion.

[0010] According to one embodiment of the utility model, the connecting part includes a driving device and a jumper row, the driving device is connected to the sliding part; the jumper row is arranged on a side of the driving device away from the sliding part and extends in the arrangement direction of the battery cells, wherein the driving device can selectively generate a driving force to drive the jumper row to move toward the connecting row and connect with the first connecting row or the second connecting row.

[0011] According to an embodiment of the utility model, a snap-in protrusion protruding toward the battery cell is formed on the jumper row, and a snap-in slot is formed on the connection row, and the snap-in protrusion can be selectively snap-fitted with the snap-in slot.

[0012] According to one embodiment of the utility model, the locking protrusion is formed with grooves concave toward each other on both sides in the radial direction, and the locking groove is formed with protrusions protruding toward each other in the radial direction. The protrusions are suitable for being received in the groove when the locking protrusion cooperates with the locking groove.

[0013] According to one embodiment of the utility model, the frame includes a frame and a beam body, the frame defines the accommodating cavity; the beam body is constructed into one or more and is arranged in the accommodating cavity to define a plurality of sub-cavities, each sub-cavity can accommodate a plurality of the battery cells, wherein the slide rail is provided on at least one of the frame and the beam body, and each of the slide rails is provided with at least one of the shielding devices.

[0014] According to an embodiment of the utility model, the detection device includes a management system and a battery sampling line. The management system is arranged in the frame and is separated from the accommodating cavity; the battery sampling line electrically connects the pole of each battery cell with the management system.

[0015] The electrical equipment according to the utility model is briefly described below.

[0016] The electrical equipment according to the utility model includes the battery pack in the above-mentioned embodiment. Therefore, when a battery cell in the battery pack fails, the battery pack can shield the faulty battery cell in time, thereby ensuring the normal operation of the electrical equipment and improving the safety of the electrical equipment. At the same time, the battery pack can continue to be used without replacing the battery pack, thereby reducing costs.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a structural diagram of a shielding device according to an embodiment of the utility model;

[0020] Figure 2 is a structural diagram of a framework according to an embodiment of the utility model;

[0021] Figure 3 is a structural diagram of a connecting bar according to an embodiment of the utility model;

[0022] Figure 4 is a structural diagram of a jumper row according to an embodiment of the utility model;

[0023] Figure 5 It is a structural diagram of a battery pack according to an embodiment of the utility model.

[0024] Reference numerals:

[0025] Battery pack 1;

[0026] Frame 11, slide rail 111, frame 112, beam body 113;

[0027] Battery cell 12, connection row 121, slot 1211, protrusion 1212;

[0028] Detection device 13, management system 131, battery sampling line 132;

[0029] Shielding device 14 , sliding portion 141 , connecting portion 142 , driving device 1421 , bridging row 1422 , snap-fitting protrusions 14221 , and grooves 14222 . DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] As the power source for major new energy vehicles, battery packs are prone to single-cell failure during use. When a single-cell failure occurs in a battery pack, if it is not handled in a timely manner, the failure can easily spread and eventually cause the entire battery pack to fail. Moreover, when there is a faulty cell, it needs to be disassembled and replaced in a timely manner, which is time-consuming and labor-intensive, greatly increases costs, and may even affect the safety of electrical equipment.

[0032] Reference below Figure 1-Figure 5 A battery pack according to an embodiment of the present invention is described.

[0033] According to the utility model, the battery pack 1 includes a frame 11, a battery cell 12, a detection device 13 and a shielding device 14. A receiving cavity suitable for receiving the battery cell 12 is formed in the frame 11, and a slide rail 111 is arranged on the frame 11; the battery cell 12 is constructed in plurality and the plurality of battery cells 12 are sequentially arranged in the receiving cavity and connected in series or in parallel with each other; at least a part of the detection device 13 is arranged in the receiving cavity and connected to the battery cell 12, and the detection device 13 is suitable for detecting the status of the battery cell 12 in real time so as to detect the faulty battery cell when a fault occurs; the shielding device 14 is slidably arranged on the slide rail 111, and the shielding device 14 can be moved to the faulty battery cell and connected to the battery cells 12 on both sides of the faulty battery cell to short-circuit the faulty battery cell.

[0034] According to the battery pack 1 of the utility model, a frame 11 is provided, and a receiving cavity for assembling battery cells 12 is formed in the frame 11. A plurality of battery cells 12 are arranged and stacked in sequence in the receiving cavity and are connected in series with each other. A slide rail 111 is provided on the frame 11, and a shielding device 14 is provided on the slide rail 111. The shielding device 14 can shield the faulty battery cells. A detection device 13 is also provided in the receiving cavity, and the detection device 13 can detect the state of the battery cells 12. Specifically, at least part of the detection device 13 is provided in the receiving cavity and connected to each battery cell 12, so as to detect the state of each battery cell 12 in real time. When the detection device 13 detects a faulty battery cell, a signal can be transmitted to the shielding device 14. After receiving the signal about the position of the faulty battery cell, the shielding device 14 can move to the position of the faulty battery cell and connect to the battery cells 12 on both sides of the faulty battery cell to short-circuit the faulty battery cell, thereby shielding the faulty battery cell so that the faulty battery cell no longer participates in the operation of the battery pack 1. The construction of the detection device 13 and the shielding device 14 enables the real-time status of multiple battery cells 12 in the battery pack 1 to be monitored. When a battery cell 12 fails, the shielding device 14 can timely shield the faulty battery cell, thereby avoiding the spread of the battery cell 12 failure in the battery pack 1 and ensuring the safety of the battery pack 1. At the same time, the battery pack 1 can continue to be used without replacing the battery cell 12, thereby reducing costs.

[0035] According to one embodiment of the utility model, the battery cell 12 includes a plurality of first battery cells and a plurality of second battery cells that are alternately arranged, and the poles at the ends of the first battery cells and the second battery cells on the same side have opposite polarities; the battery pack 1 also includes a first connecting row and a second connecting row, the first connecting row is arranged at the ends of the same side of a second battery cell and an adjacent first battery cell, and the second connecting row is arranged at the other ends of the same side of the same second battery cell and another adjacent first battery cell, and the shielding device 14 can selectively connect two adjacent first connecting rows or two adjacent second connecting rows.

[0036] Since multiple cells 12 are arranged in the battery pack 1, and the detection device 13 and the shielding device 14 are both connected to the cells 12, the arrangement of the cells 12 will affect the functions of the detection device 13 and the shielding device 14. Specifically, multiple first cells and multiple second cells are alternately arranged in the battery pack 1, and the multiple first cells and multiple second cells are connected in series with each other, and the poles at the ends on the same side have opposite polarities. It can be understood that a second cell is arranged between two adjacent first cells. The arrangement of the first cell and the second cell improves the compactness of the multiple cells 12 in the battery pack 1 when arranged in series. The battery pack 1 is also provided with a first connection row and a second connection row. The first connection row is arranged at the end on the same side of a second cell and an adjacent first cell so as to facilitate the connection of the second cell in series with an adjacent first cell, and the second connection row is arranged at the other end on the same side of the same second cell and another adjacent first cell so as to facilitate the connection of the same second cell in series with another adjacent first cell. The first connecting row and the second connecting row are arranged in such a way that the first battery cell and the second battery cell are connected in series with each other. When the detection device 13 detects a faulty battery cell, the shielding device 14 can move to the position of the faulty battery cell and connect two adjacent first connecting rows or two adjacent second connecting rows on both sides of the faulty battery cell to short-circuit the faulty battery cell and thereby achieve the function of shielding the faulty battery cell.

[0037] It is worth noting that in the following embodiments, for ease of description, the first connecting row and the second connecting row may be collectively referred to as connecting row 121. It may also be understood that connecting row 121 includes the first connecting row and the second connecting row, and the first connecting row and the second connecting row have the same structure.

[0038] In some embodiments, the first battery cell and the second battery cell may correspond to one battery cell 12 , or a plurality of battery cells 12 may be connected in parallel and collectively referred to as one first battery cell or one second battery cell.

[0039] According to an embodiment of the present invention, the shielding device 14 includes a sliding portion 141 and a connecting portion 142. The sliding portion 141 is movably disposed on the slide rail 111. The connecting portion 142 is connected to the sliding portion 141. The connecting portion 142 is suitable for connecting to two first connecting rows and / or two second connecting rows on both sides of the faulty cell when the detection device 13 detects the faulty cell. Since the shielding device 14 is a structure for the battery pack 1 to shield the faulty cell, the structure of the shielding device 14 will affect the ability of the battery pack 1 to shield the faulty cell. Specifically, the shielding device 14 includes a sliding portion 141 and a connecting portion 142. The sliding portion 141 is movably disposed on the slide rail 111, and the connecting portion 142 is connected to the sliding portion 141. When the detection device 13 detects a faulty cell, the sliding portion 141 drives the connecting portion 142 to move along the slide rail 111 to the position of the faulty cell. At this time, the connecting portion 142 can be connected to two adjacent first connection rows or two adjacent second connection rows on both sides of the faulty cell to short-circuit the faulty cell, so as to realize the function of the battery pack 1 to shield the faulty cell. The structure of the sliding portion 141 and the connecting portion 142 realizes the ability of the battery pack 1 to shield the faulty cell.

[0040] According to an embodiment of the present invention, the shielding device 14 further includes a connecting member, which is disposed on the same side of the sliding portion 141 and the connecting portion 142 and connects the sliding portion 141 and the connecting portion 142. The shielding device 14 is further provided with a connecting member, which is disposed on the same side of the sliding portion 141 and the connecting portion 142. During assembly, the connecting member can connect the connecting portion 142 and the moving portion, thereby improving the stability of the shielding device 14.

[0041] According to an embodiment of the present invention, the connection portion 142 includes a driving device 1421 and a jumper row 1422, wherein the driving device 1421 is connected to the sliding portion 141; the jumper row 1422 is arranged on the side of the driving device 1421 away from the sliding portion 141 and extends in the arrangement direction of the battery cells 12, wherein the driving device 1421 can selectively generate a driving force to drive the jumper row 1422 to move toward the connection row 121 and connect with the first connection row or the second connection row. Since the connection portion 142 is a structure of the shielding device 14 for shielding the battery cells 12, the structure of the connection portion 142 will affect the shielding of the shielding device 14 on the faulty battery cells. Specifically, the connecting part 142 includes a driving device 1421 and a jumper row 1422. The driving device 1421 is connected to the sliding part 141. The jumper row 1422 is arranged on the side of the driving device 1421 away from the sliding part 141. When the detection device 13 detects a faulty battery cell, the sliding part 141 drives the connecting part 142 to move to the position of the faulty battery cell. At this time, the driving device 1421 works to apply pressure to the jumper row 1422 to drive the jumper row 1422 to move toward the battery cell 12 until at least a portion of the jumper row 1422 is connected to the first connection row or the second connection row on both sides of the faulty battery cell, so that the faulty battery cell is short-circuited, thereby realizing the function of the shielding device 14 to shield the faulty battery cell.

[0042] In some embodiments, the battery cells 12 may be arranged horizontally or vertically in the receiving cavity, without limitation.

[0043] According to an embodiment of the utility model, a snap-in protrusion 14221 protruding toward the battery cell 12 is formed on the jumper row 1422, and a snap-in groove 1211 is formed on the connecting row 121. The snap-in protrusion 14221 protruding toward the battery cell 12 is formed on the jumper row 1422, and a snap-in groove 1211 is formed on the connecting row 121. When the shielding device 14 moves to the position of the faulty battery cell, the jumper row 1422 moves toward the battery cell 12 under the drive of the driving device 1421, and the snap-in protrusion 14221 on the jumper row 1422 cooperates with the snap-in groove 1211 on the connecting row 121 to make the shielding device 14 short-circuit the faulty battery cell, thereby realizing the function of the shielding device 14 to shield the faulty battery cell.

[0044] According to an embodiment of the utility model, grooves 14222 that are concave toward each other are formed on both sides of the clamping protrusion 14221 in the radial direction, and protrusions 1212 that protrude toward each other in the radial direction are formed in the clamping groove 1211, and the protrusions 1212 are suitable for being received in the grooves 14222 when the clamping protrusion 14221 cooperates with the clamping groove 1211. Since the connection between the bridging row 1422 and the connecting row 121 is achieved by the cooperation between the clamping protrusion 14221 and the clamping groove 1211, the structure of the clamping protrusion 14221 and the clamping groove 1211 will affect the stability of the connection between the bridging row 1422 and the connecting row 121. Specifically, grooves 14222 which are concave toward each other are formed on both sides of the snap-in protrusion 14221 in the radial direction, and protrusions 1212 which protrude toward each other in the radial direction are formed in the snap-in slot 1211. When the snap-in protrusion 14221 cooperates with the snap-in slot 1211, the protrusion 1212 can be accommodated in the groove 14222 and the snap-in protrusion 14221 can stop against the snap-in slot 1211, thereby improving the stability of the connection between the jumper row 1422 and the connecting row 121.

[0045] According to an embodiment of the utility model, the frame 11 includes a frame 112 and a beam 113, wherein the frame 112 defines a receiving cavity; the beam 113 is constructed as one or more and is arranged in the receiving cavity to define a plurality of sub-cavities, each of which can accommodate a plurality of battery cells 12, wherein a slide rail 111 is arranged on at least one of the frame 112 and the beam 113, and each slide rail 111 is arranged on at least one shielding device 14. Specifically, the frame 11 includes a frame 112 and a beam 113, wherein the frame 112 defines a receiving cavity, and the beam 113 is arranged in the frame 112, and the beam 113 can be understood as a longitudinal beam and / or a transverse beam in the battery pack 1, and during assembly, the beam 113 defines a plurality of sub-cavities in the receiving cavity, each of which can respectively accommodate a plurality of battery cells 12, thereby improving the energy density of the battery pack 1. During processing, slide rails 111 can be set on the beam body 113 and the frame 112, and one or more shielding devices 14 can be set on each slide rail 111. When a battery cell 12 in a different sub-area fails, the corresponding shielding device 14 can shield the corresponding faulty battery cell, thereby improving the safety of the battery pack 1.

[0046] According to an embodiment of the utility model, the detection device 13 includes a management system 131 and a battery sampling line 132. The management system 131 is arranged in the frame 11 and is separated from the accommodating cavity; the battery sampling line 132 electrically connects the pole of each battery cell 12 with the management system 131. The detection device 13 includes a management system 131 and a battery sampling line 132. The management system 131 is arranged in the frame 11 and is separated from the accommodating cavity, so as to avoid interference between the battery cell 12 and the internal structure of the battery pack 1. The battery sampling line 132 electrically connects the pole of each battery cell 12 with the management system 131. The battery sampling line 132 can obtain the voltage, current and other data of each battery cell 12 in real time, and transmit the obtained data information to the management system 131. The management system 131 analyzes the information transmitted by the battery sampling line 132 to find out whether there is a faulty battery cell. If there is, the location information of the faulty battery cell is transmitted to the shielding device 14 to facilitate the operation of the shielding device 14. The provision of the battery sampling line 132 and the management system 131 enables the battery pack 1 to monitor the status of the battery cells 12 in real time, thereby improving the safety of the battery pack 1 .

[0047] In some embodiments, the battery pack 1 can be used in electrical equipment such as vehicles. When a faulty battery cell occurs, there is no need to disassemble the battery pack 1 for repair. The battery pack 1 can continue to work and the vehicle can continue to drive safely.

[0048] The electrical equipment according to the utility model is briefly described below.

[0049] The electrical equipment according to the utility model includes the battery pack 1 in the above embodiment. Therefore, when a battery cell 12 in the battery pack 1 fails, the battery pack 1 can shield the failed battery cell in time, thereby ensuring the normal operation of the electrical equipment and improving the safety of the electrical equipment. At the same time, the battery pack 1 can continue to be used without replacing the battery pack 1, thereby reducing the cost.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0051] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0052] In the description of the present invention, "plurality" means two or more.

[0053] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact but are in contact with each other via another feature therebetween.

[0054] In the description of the present invention, a first feature “above”, “over” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0056] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery pack, characterized in that: include: A frame, wherein a receiving cavity suitable for receiving the battery cell is formed in the frame, and a slide rail is arranged on the frame; A battery cell, wherein the battery cell is structured in a plurality and the plurality of battery cells are sequentially arranged in the accommodating cavity and are connected in series or in parallel with each other; a detection device, at least part of which is disposed in the accommodating cavity and connected to the battery cell, and the detection device is adapted to detect the state of the battery cell in real time so as to detect a faulty battery cell when a fault occurs; A shielding device is slidably disposed on the slide rail, and the shielding device can be moved to the faulty battery cell and connected to the battery cells on both sides of the faulty battery cell to short-circuit the faulty battery cell.

2. The battery pack according to claim 1, characterized in that: The battery cell comprises a plurality of first battery cells and a plurality of second battery cells which are alternately arranged, and the poles at one end of the same side of the first battery cell and the second battery cell have opposite polarities; The battery pack also includes a first connecting row and a second connecting row, the first connecting row is arranged at one end on the same side of one of the second battery cells and an adjacent one of the first battery cells, and the second connecting row is arranged at the other end on the same side of the second battery cell and another adjacent one of the first battery cells, and the shielding device can selectively connect two adjacent first connecting rows or two adjacent second connecting rows.

3. The battery pack according to claim 2, characterized in that: The shielding device comprises: A sliding part, the sliding part is movably arranged on the slide rail; A connecting portion, wherein the connecting portion is connected to the sliding portion, and the connecting portion is suitable for connecting to two first connecting rows and / or two second connecting rows on both sides of the faulty battery cell when the detection device detects the faulty battery cell.

4. The battery pack according to claim 3, characterized in that: The shielding device further includes a connecting member, which is disposed on the same side of the sliding portion and the connecting portion and connects the sliding portion with the connecting portion.

5. The battery pack according to claim 3, characterized in that: The connecting portion comprises: a driving device connected to the sliding portion; A jumper row is arranged on a side of the driving device away from the sliding portion and extends in the arrangement direction of the battery cells, wherein The driving device can selectively generate a driving force to drive the bridging row to move toward the connecting row and connect with the first connecting row or the second connecting row.

6. The battery pack according to claim 5, characterized in that: The jumper row is formed with a snap-in protrusion protruding toward the battery core, and the connection row is formed with a snap-in slot, and the snap-in protrusion can be selectively snap-fitted with the snap-in slot.

7. The battery pack according to claim 6, characterized in that: The clamping protrusion has grooves on both sides in the radial direction, which are concave toward each other. The clamping groove has protrusions that protrude toward each other in the radial direction. The protrusions are suitable for being received in the groove when the clamping protrusion cooperates with the clamping groove.

8. The battery pack according to claim 1, characterized in that: The framework includes: A frame, wherein the accommodating cavity is defined within the frame; A beam body, wherein the beam body is constructed into one or more beam bodies and is arranged in the accommodating cavity to define a plurality of sub-cavities, each of which can accommodate a plurality of the battery cells. The slide rail is arranged on at least one of the frame and the beam body, and at least one shielding device is arranged on each of the slide rails.

9. The battery pack according to claim 8, characterized in that: The detection device comprises: A management system, the management system is arranged in the frame and is separated from the accommodating cavity; A battery sampling line, wherein the battery sampling line electrically connects the pole of each battery cell to the management system.

10. An electrical device, characterized in that: A battery pack comprising any one of claims 1 to 9.

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