Battery protection device and electric appliance

Abstract

The utility model discloses a kind of battery protection device and electrical equipment, it is related to battery protection technical field, battery protection device includes: battery structure;Battery compartment, battery structure is pluggable connection in battery compartment;Switching component, including connecting piece, first electrically conductive part, second electrically conductive part, elastic electrically conductive part, connecting piece is connected in battery structure, first electrically conductive part, second electrically conductive part are connected in connecting piece, second electrically conductive part signal connection in the battery protection board of battery structure;Elastic electrically conductive part is movably arranged in connecting piece, the connection and disconnection of battery structure and battery compartment make elastic electrically conductive part movable, elastic electrically conductive part moves to make first electrically conductive part and second electrically conductive part intercommunication or disconnect, to respectively correspond to form battery insertion overcurrent signal or battery pull-out cut-off signal.The above-mentioned battery protection device can make battery internal cut-off under battery pull-out state, ensure that there is no power supply risk in interior, ensure the reliability and security of battery use.

Description

Technical Field

[0001] This utility model relates to the field of battery protection technology, and more specifically, to a battery protection device. Furthermore, this utility model also relates to an electrical appliance that includes the aforementioned battery protection device. Background Technology

[0002] The laptop battery, as a core energy module, is connected to the computer system via a connector to enable power supply and communication.

[0003] In practical applications, on the one hand, after this type of plug-in battery is removed, the battery is still in a power supply state, the overcurrent inside the battery is not completely disconnected, and the cells remain conductive, which cannot maintain a reliable disconnection and poses a safety hazard; on the other hand, during transportation or when stationary, external forces may cause short circuits or overcurrent, leading to thermal runaway.

[0004] In summary, ensuring the reliability of batteries under overcurrent and current-disconnection conditions is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a battery protection device that can reliably disconnect internal overcurrent when the battery is removed, ensuring no risk of power supply inside the battery, and guaranteeing the safety and reliability of the battery structure during storage or transportation, thus achieving reliable and effective protection for the battery structure. Another purpose of this utility model is to provide an electrical device that includes the above-mentioned battery protection device.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A battery protection device, comprising:

[0008] Battery structure;

[0009] A battery compartment, wherein the battery structure is pluggably connected to the battery compartment;

[0010] A switch assembly includes a connector, a first conductive element, a second conductive element, and an elastic conductive element. The connector is connected to the battery structure. The first conductive element and the second conductive element are both connected to the connector. The second conductive element is signal-connected to the battery protection board of the battery structure.

[0011] The elastic conductive element is movably disposed within the connector. The connection and disconnection of the battery structure with the battery compartment make the elastic conductive element movable. The movement of the elastic conductive element causes the first conductive element and the second conductive element to connect or disconnect, so as to respectively generate a battery insertion overcurrent signal or a battery removal current cut-off signal.

[0012] Preferably, the elastic conductive element includes a first contact portion and a second contact portion, the first contact portion and the first conductive element are electrically connected, and the second contact portion is movably disposed within the connector to contact or separate from the second conductive element.

[0013] Preferably, it further includes a slider, which is slidably connected to the connector, and the sliding of the slider corresponds to the contact or separation of the second contact portion and the second conductive element.

[0014] Preferably, it further includes a trigger, which is disposed within the battery compartment, and the connection or disconnection between the battery structure and the battery compartment corresponds to the contact or separation of the trigger and the sliding member, respectively.

[0015] Preferably, the connector has a first mounting cavity and a second mounting cavity sequentially arranged inside along a first direction, the first mounting cavity and the second mounting cavity are connected, and the first direction is the direction in which the second contact portion moves closer to the second conductive element;

[0016] The first conductive element is connected to the cavity wall of the first mounting cavity, and the second conductive element is connected to the cavity wall of the second mounting cavity.

[0017] Preferably, the slider includes a first sliding portion and a second sliding portion connected thereto, wherein either the first sliding portion or the second sliding portion is disposed in the first mounting cavity, and the other portion extends at least partially out of the first mounting cavity in a direction away from the second mounting cavity;

[0018] The cavity wall of the first mounting cavity is provided with a limiting groove, which is located at the end of the moving path of the first sliding part along the direction away from the second contact part.

[0019] Preferably, the first conductive element includes an edge portion and a central hollow portion, both the first mounting cavity and the second mounting cavity are connected to the central hollow portion, and the edge portion is disposed on the cavity wall of the first mounting cavity near the second mounting cavity;

[0020] The edge portion includes an ear portion and a fitting portion. The ear portion includes a vertical portion and a horizontal portion connected thereto. The fitting portion is connected to the vertical portion and electrically connected to the first contact portion. The horizontal portion extends in a direction away from the center of the intermediate hollow portion and is connected to the mounting groove of the connector.

[0021] Preferably, the second conductive element includes a protrusion and a flat portion connected to the protrusion, the flat portion being electrically connected to the battery protection board, and the protrusion being disposed in contact with the cavity wall of the second mounting cavity;

[0022] The protrusion includes a first part and a second part connected to the first part. The first part is at least partially located within the first mounting cavity, and the second part is disposed in contact with the cavity wall of the second mounting cavity.

[0023] The first edge A of the first portion, which is far from the second mounting cavity, and the second edge B of the first conductive element, which is close to the first contact portion, are flush.

[0024] Preferably, the battery structure includes a battery lower cover, the battery lower cover is provided with a protective groove, the protective groove is provided with openings on both sides along the direction parallel to the second contact portion, and the connector is fixed in the protective groove;

[0025] The opening of the protective groove on the side away from the second conductive element has a third edge C, and the sliding element has a fourth edge D, which does not extend beyond the third edge C.

[0026] This utility model also provides an electrical device, including the battery protection device described in any of the above claims.

[0027] The battery protection device provided by this utility model includes a battery structure, a battery compartment, and a switch assembly. The switch assembly includes a connector, a first conductive element, a second conductive element, and an elastic conductive element. The first and second conductive elements are both connected to the connector for fixation, and the elastic conductive element is movably disposed within the connector. The battery structure is pluggable and detachable from the battery compartment. The connection and disconnection of the battery structure and the battery compartment allow the elastic conductive element to move within the connector. The movement of the elastic conductive element allows the first and second conductive elements to connect or disconnect, respectively generating a battery insertion overcurrent signal or a battery removal current cut-off signal. Through the signal connection between the battery protection board of the battery structure and the second conductive element, the battery protection board can receive the battery insertion overcurrent signal and enable the battery to enter the overcurrent state, and receive the battery removal current cut-off signal and enable the battery to enter the current cut-off state.

[0028] The beneficial effects of this utility model are as follows: through the cooperation of the elastic conductive element, the first conductive element and the second conductive element, a battery insertion overcurrent signal and a battery removal current cut-off signal can be generated when the battery structure is inserted or removed from the battery compartment, so that the battery can reliably start overcurrent operation or current cut-off operation; when the battery structure is removed, the battery structure disconnects the internal overcurrent, ensuring that there is no risk of internal power supply, and ensuring that the battery structure always remains in a current cut-off state when it is stationary or during transportation, thus avoiding thermal runaway. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of the switch assembly provided by this utility model;

[0031] Figure 2 for Figure 1 Exploded view;

[0032] Figure 3 for Figure 1 A sectional view;

[0033] Figure 4 This is a schematic diagram of the structure of the sliding component provided by this utility model;

[0034] Figure 5 A schematic diagram of the structure of the first conductive element provided by this utility model;

[0035] Figure 6 A schematic diagram of the structure of the second conductive element provided by this utility model;

[0036] Figure 7 This is a connection diagram of the battery structure and switch assembly provided by this utility model;

[0037] Figure 8 A schematic diagram of the operating state of the battery protection device provided by this utility model;

[0038] Figure 9 This is a schematic diagram of another operating state of the battery protection device provided by this utility model.

[0039] Figures 1-9 In the accompanying drawings, the reference numerals include:

[0040] 01-Switch assembly; 02-Battery protection board; 03-Trigger element; 04-Battery bottom cover; 041-Protective slot;

[0041] 1-Sliding component; 2-Elastic conductive component; 3-First conductive component; 4-Connecting component; 5-Second conductive component;

[0042] 11-First sliding part; 12-Second sliding part; 21-First contact part; 22-Second contact part; 31-Edge part; 32-Center hollow part; 311-Fitting part; 312-Ear part; 3121-Vertical part; 3122-Horizontal part; 41-Mounting groove; 42-Limiting groove; 401-First mounting cavity; 402-Second mounting cavity; 51-Protrusion; 52-Flat part; 511-First part; 512-Second part. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0044] The core of this invention is to provide a battery protection device that reliably disconnects internal overcurrent when the battery is removed, ensuring no risk of power supply to the battery and guaranteeing the battery's safety and reliability during storage or transportation. Another core aspect of this invention is to provide an electrical appliance that includes the aforementioned battery protection device.

[0045] The battery protection device provided by this utility model includes a battery structure, a battery compartment, and a switch assembly 01. The switch assembly 01 includes a connector 4, a first conductive element 3, a second conductive element 5, and an elastic conductive element 2. Please refer to [reference needed]. Figure 1 , Figure 2 , Figure 8 , Figure 9 .

[0046] Both the first conductive element 3 and the second conductive element 5 are connected to the connector 4. This connection can take the form of adhesive bonding, snap-fitting, or other similar methods. If both the first conductive element 3 and the second conductive element 5 are conductive sheets, they can be fixed by adhesive bonding, which is convenient and does not require structural modifications to the connector 4. The first conductive element 3 and the second conductive element 5 can also be in other forms, such as relatively thick blocks, without much restriction.

[0047] The connector 4 ensures that the first conductive element 3 and the second conductive element 5 are reliably fixed, thereby guaranteeing better operational results.

[0048] The first conductive element 3 and the second conductive element 5 are separated by the connector 4. Here, separation means that the first conductive element 3 and the second conductive element 5 do not come into contact, and no conduction will be formed between the first conductive element 3 and the second conductive element 5 by means of the connector 4.

[0049] The second conductive component 5 is connected to the battery protection board 02. The battery protection board 02 is a component that protects the battery current and can control the start of overcurrent operation and the interruption of current operation. Overcurrent here refers to the conduction between the multiple cells included in the battery.

[0050] The connection between connector 4 and battery structure can fix switch assembly 01 relative to battery structure. When battery structure moves, it will drive switch assembly 01 to move.

[0051] The elastic conductive element 2 is movably disposed within the connector 4. The connection and disconnection of the battery structure and the battery compartment enable the elastic conductive element 2 to move. The movement of the elastic conductive element 2 can connect or disconnect the first conductive element 3 and the second conductive element 5.

[0052] Specifically, the elastic conductive element 2 is made of conductive material. When the battery structure and the battery compartment are connected, the elastic conductive element 2 can move along the first direction. The first conductive element 3 and the second conductive element 5 are connected through the elastic conductive element 2 to form a battery insertion overcurrent signal. When the battery insertion overcurrent information is fed back to the battery protection board 02 of the battery structure, the battery protection board 02 can open the current conduction, so that the multiple cells of the battery structure are connected.

[0053] When the battery structure and battery compartment are disconnected, the elastic conductive element 2 can move along the second direction, and the first conductive element 3 and the second conductive element 5 are disconnected, forming a battery removal current-cutting signal. When the battery removal current-cutting signal is fed back to the battery protection board 02 of the battery structure, the battery protection board 02 can open the current-cutting mechanism, disconnecting the internal overcurrent of the battery and maintaining this state even though the multiple cells of the battery structure are no longer conductive. The aforementioned first and second directions correspond to... Figure 3 The positive and negative y-axis in the diagram.

[0054] In this embodiment, the movement of the elastic conductive element 2 is related to the insertion and removal of the battery structure relative to the battery compartment. The movement of the elastic conductive element 2 can connect or disconnect the first conductive element 3 and the second conductive element 5, forming a battery insertion overcurrent signal and a battery removal current disconnection signal. In this way, the internal overcurrent is automatically turned on when the battery structure is inserted into the battery compartment and automatically disconnected when it is removed from the battery compartment, improving the reliability and safety of the overcurrent and current disconnection states, and ensuring the reliability and safety of the battery structure in use.

[0055] In one specific embodiment, the first conductive element 3 and the second conductive element 5 have opposite polarities, specifically one is a positive conductive element and the other is a negative conductive element. The positive conductive element, the negative conductive element and the battery protection board 02 form a separate circuit. This separate circuit forms an overcurrent when the positive conductive element is connected to the negative conductive element through the elastic conductive element 2, and forms a current interruption when the positive conductive element and the negative conductive element are disconnected.

[0056] In another specific embodiment, the first conductive element 3 and the second conductive element 5 have the same polarity, specifically, both can be positive conductive elements or both can be negative conductive elements. Taking both as positive conductive elements as an example, the switch assembly 01 is located on the main overcurrent path of the positive input / output pin, and the positive conductive element, the positive conductive element, the positive input / output pin, and the battery protection board 02 form a separate circuit. When the positive conductive element is disconnected, the positive terminal of the main overcurrent circuit is disconnected, and only the negative terminal is conducting, so overcurrent cannot be achieved, i.e., it is in a current-disconnected state; when the positive conductive element is connected, the positive terminal of the main overcurrent current is connected, and both the negative and positive terminals are conducting, i.e., overcurrent can be formed, i.e., it is in an overcurrent state.

[0057] Based on any of the above embodiments, please refer to Figure 3 , Figure 8 , Figure 9 The elastic conductive element 2 includes a first contact portion 21 and a second contact portion 22. The first contact portion 21 is electrically connected to the first conductive element 3, and the second contact portion 22 is movably disposed within the connector 4 to contact or separate from the second conductive element 5.

[0058] The elastic conductive element 2 includes a first contact portion 21 and a second contact portion 22, which are integrally formed.

[0059] The first contact portion 21 is electrically connected to the first conductive member 3. The second contact portion 22 is movably disposed within the connector 4. The second contact portion 22 can be moved to contact the second conductive member 5 or separate from the second conductive member 5. The contact and separation of the second contact portion 22 and the second conductive member 5 can respectively generate a battery insertion signal and a battery removal signal.

[0060] The second conductive element 5 is electrically connected to the battery protection board 02. Therefore, the battery protection board 02 can acquire battery insertion overcurrent signal and battery removal current interruption signal. After acquiring the battery insertion overcurrent signal, the battery protection board 02 can initiate the battery insertion operation, enabling overcurrent between the multiple cells of the battery structure. After acquiring the battery removal current interruption signal, the battery protection board 02 can initiate the battery removal operation, enabling current interruption between the multiple cells of the battery structure. Both the battery insertion signal and the battery removal signal are related to the movement of the second contact part 22. The movement of the second contact part 22 is related to the insertion and removal actions of the battery structure relative to the battery compartment. Therefore, this method can achieve automated control of the battery structure being connected when inserted into the battery compartment and disconnected when removed from the battery compartment, improving the reliability and safety of overcurrent and current interruption states.

[0061] In actual use, when the battery structure is in the pulled-out state relative to the battery compartment, the second contact 22 and the second conductive element 5 separate, and the first conductive element 3 and the second conductive element 5 are no longer conductive, so as to form a battery pull-out current cut-off signal that can be sent to the battery protection board 02. Based on this signal, each cell of the battery structure can disconnect the overcurrent and maintain this current cut-off state. After the battery structure is inserted into the battery compartment, the overcurrent state is turned on again. Therefore, reliable current cut-off operation and overcurrent operation can be maintained, ensuring the safety and reliability of plug-in power cut-off.

[0062] After the battery structure is pulled out, the connection between the second contact 22 of the elastic conductive element 2 and the second conductive element 5 is automatically disconnected. The battery protection board 02 recognizes it as "pull-out state" and issues a command to disconnect the overcurrent inside the battery structure, ensuring that there is no risk of power supply inside the battery structure and ensuring that the battery structure always remains in a disconnected state during static state or transportation, with no risk of thermal runaway.

[0063] In one specific embodiment, the first contact portion 21 and the second contact portion 22 can form an elastic conductive element 2 with an arched structure. When the second contact portion 22 moves, the first contact portion 21 also moves, but the range of movement of the first contact portion 21 is much smaller than the range of movement of the second contact portion 22. In the initial state, such as... Figure 8 The first contact portion 21 is electrically connected to the first conductive element 3; when the second contact portion 22 moves to contact the second conductive element 5, such as Figure 3 and Figure 9 As shown, the first contact portion 21 changes from partially contacting the first conductive element 3 to fully contacting the first conductive element 3, and the second contact portion 22 also changes to fully contacting the second conductive element 5.

[0064] In another specific embodiment, the elastic conductive element 2 can be shaped as an arched structure in the middle and a planar structure at the edges. During the movement of the second contact portion 22, the first contact portion 21 remains in a constant position. While the first contact portion 21 remains in contact with the first conductive element 3, the second contact portion 22 can move and deform under the action of elastic force, thus achieving reliable contact and separation between the second contact portion 22 and the second conductive element 5.

[0065] Based on any of the above embodiments, a slider 1 is also included, which is slidably connected to the connector 4. The sliding of the slider 1 corresponds to the contact or separation of the second contact portion 22 and the second conductive member 5.

[0066] The sliding of the slider 1 relative to the connector 4 enables the second contact portion 22 to move. Specifically, when the battery structure is inserted or removed from the battery compartment, the slider 1 will slide, and the direction of the sliding of the slider 1 is the same as the direction of movement of the second contact portion 22. Figure 8 , Figure 9 In the y-direction. When the battery structure is inserted into the battery compartment, the slider 1 slides to make contact between the second contact portion 22 and the second conductive member 5, so that the first conductive member 3 and the second conductive member 5 are connected, and a battery insertion overcurrent signal is generated accordingly; when the battery structure is disconnected from the battery compartment, the slider 1 slides to separate the second contact portion 22 and the second conductive member 5, so that the first conductive member 3 and the second conductive member 5 are disconnected, and a battery removal disconnect current signal is generated accordingly.

[0067] like Figure 8 As shown, the elastic conductive element 2 and the sliding element 1 can be bonded together in the initial state to ensure reliable deformation of the elastic conductive element 2 as a whole under compression, that is, to achieve reliable contact between the first conductive element 3 and the second conductive element 5.

[0068] In this embodiment, the slider 1 is specifically made of insulating material to ensure the safety of the operation.

[0069] A slide rail for sliding the slider 1 can be provided on the connector 4 to ensure reliable sliding of the slider 1, which in turn enables reliable movement of the second contact portion 22 of the elastic conductive element 2, ensuring reliable contact and separation of the first conductive element 3 and the second conductive element 5, and thus ensuring the reliable accuracy of forming the battery insertion overcurrent signal and the battery removal current cut-off signal.

[0070] Several steps can be set on the slider 1, and a sliding groove corresponding to each step can be set on the inner side wall of the connector 4, so that the slider 1 can be reliably slid through the sliding limit of each step and the corresponding sliding groove, that is, to ensure the reliable contact and separation of the first conductive element 3 and the second conductive element 5, that is, to ensure the reliable accuracy of forming the battery insertion overcurrent signal and the battery removal current cut-off signal.

[0071] Based on any of the above embodiments, please refer to Figure 9 It also includes a trigger 03, which is located inside the battery compartment. The connection or disconnection between the battery structure and the battery compartment corresponds to the contact or separation of the trigger 03 and the sliding member 1, respectively.

[0072] The battery compartment is equipped with a trigger 03. The trigger 03 and the second contact part 22 in the connector 4 are in contact through the slider 1. The trigger 03 drives the second contact part 22 to move within the connector 4 through the slider 1.

[0073] The trigger element 03 can be an integrally formed structure inside the battery compartment, a structure that can be detachably connected to the battery compartment, or a structure that is fixed inside the battery compartment through other connection methods; there are no restrictions.

[0074] When the battery structure is inserted into the battery compartment, the slider 1 and the trigger 03 come into contact. When the battery structure is installed downwards in the battery compartment, the trigger 03 pushes the slider 1 to move upwards, that is, pushes the second contact part 22 to move upwards until it contacts the second conductive part 5, so as to realize the conduction of the first conductive part 3 and the second conductive part 5, so as to form a battery insertion current guiding signal.

[0075] As the battery structure moves upward from the battery compartment, the slider 1 and the trigger 03 gradually change from contact to non-contact. The slider 1 slides down naturally, and the second contact part 22 moves downward and separates from the second conductive part 5. Correspondingly, the first conductive part 3 and the second conductive part 5 are no longer connected, so as to form a battery removal disconnection signal.

[0076] In this embodiment, the upper and lower positions, the upper position corresponds to... Figure 9 The positive y-axis in the middle corresponds to the lower position. Figure 9 The negative y-axis in the equation.

[0077] In one embodiment, the trigger 03 can be an elastic material such as silicone or rubber, or a spring structure, to ensure stable triggering when the battery is inserted and automatic reset when the battery is removed, thereby improving service life and reliability.

[0078] Based on any of the above embodiments, please refer to Figure 8 The connector 4 has a first mounting cavity 401 and a second mounting cavity 402 inside along the first direction. The first mounting cavity 401 and the second mounting cavity 402 are connected. The first direction is the direction in which the second contact part 22 moves closer to the second conductive member 5. The first conductive member 3 is connected to the cavity wall of the first mounting cavity 401, and the second conductive member 5 is connected to the cavity wall of the second mounting cavity 402.

[0079] Please refer to Figure 8 The movement of the second contact portion 22 toward the second conductive member 5 is shown in the positive y-direction, which is the end with the y-axis pointing upwards. The connection between the first mounting cavity 401 and the second mounting cavity 402 enables the second contact portion 22 of the elastic conductive member 2 located in the first mounting cavity 401 to contact the second conductive member 5 located in the second mounting cavity 402, allowing the second contact portion 22 to move within the first mounting cavity 401 until the second contact portion 22 and the second conductive member 5 make contact. Based on the electrical connection between the first contact portion 21 and the first conductive member 3, the connection between the first conductive member 3 and the second conductive member 5 is achieved, correspondingly generating a battery insertion overcurrent signal. When the battery protection board 02 receives the battery insertion overcurrent signal, it initiates the overcurrent operation after battery insertion, making the multiple cells of the battery conductive.

[0080] In this embodiment, it should be noted that the first conductive element 3 and the second conductive element 5 do not contact each other. Based on the connection between the first mounting cavity 401 and the second mounting cavity 402, by restricting the connection position of the first conductive element 3 and the second conductive element 5 relative to the mounting cavity, the first conductive element 3 and the second conductive element 5 can be made relatively independent. Of course, this can also be achieved in other ways and is not limited to restricting the connection position.

[0081] Based on any of the above embodiments, please refer to Figure 3 , Figure 4 The slider 1 includes a first sliding part 11 and a second sliding part 12 connected thereto. Either the first sliding part 11 or the second sliding part 12 is disposed in the first mounting cavity 401, and the other extends at least partially out of the first mounting cavity 401 in a direction away from the second mounting cavity 402.

[0082] like Figure 3 As shown, the first sliding part 11 and the second sliding part 12 form a sliding member 1 with steps, and the outer peripheral dimension of the first sliding part 11 is larger than the outer peripheral dimension of the second sliding part 12.

[0083] In one embodiment, a first sliding portion 11 is disposed within a first mounting cavity 401, and a second sliding portion 12 extends at least partially from the first mounting cavity 401 in a direction away from the second mounting cavity 402. For example... Figure 3 As shown, in this embodiment, the first sliding part 11 slides within the first mounting cavity 401, and the sliding is limited by the contact between the first sliding part 11 and the first mounting cavity 401. The contact limitation here refers to the limitation of the sliding distance by which the first sliding part 11 slides to separate the second contact part 22 from the second conductive member 5.

[0084] In another embodiment, the second sliding portion 12 is disposed within the first mounting cavity 401, and the first sliding portion 11 extends at least partially out of the first mounting cavity 401 in a direction away from the second mounting cavity 402. In this embodiment, the second sliding portion 12 slides within the first mounting cavity 401, and is limited by the contact between the first sliding portion 11 and the bottom of the connector 4. This contact limitation refers to limiting the sliding distance of the second sliding portion 12 to allow the second contact portion 22 to contact the second conductive member 5.

[0085] In this embodiment, at least one of the first sliding part 11 and the second sliding part 12 extends out of the first mounting cavity 401. The extension of the first mounting cavity 401 is specifically to facilitate the sliding of the sliding member 1 during the battery structure insertion and removal operation. The sliding member 1 drives the movement of the elastic conductive member 2 to form a battery insertion overcurrent signal and a battery removal current cut-off signal.

[0086] Based on any of the above embodiments, please refer to Figure 3 The first mounting cavity 401 has a limiting groove 42 on its cavity wall. The limiting groove 42 is located at the end of the moving path of the first sliding part 11 along the direction away from the second contact part 22.

[0087] In this embodiment, the outer periphery of the first sliding part 11 is larger than the outer periphery of the second sliding part 12. The first sliding part 11 is disposed within the first mounting cavity 401, and the second sliding part 12 extends at least partially out of the first mounting cavity 401 in a direction away from the second mounting cavity 402. By providing the limiting groove 42, when the sliding member 1 slides to move the second contact part 22 away from the second conductive member 5, the sliding distance of the sliding part is limited, and the first sliding part 11 can slide to fit against the limiting groove 42, thus achieving the sliding limiting effect.

[0088] Based on any of the above embodiments, please refer to Figure 3 , Figure 5 , Figure 8 The first conductive element 3 includes an edge portion 31 and a central hollow portion 32. The first mounting cavity 401 and the second mounting cavity 402 are both connected to the central hollow portion 32. The edge portion 31 is disposed on the cavity wall of the first mounting cavity 401 on the side close to the second mounting cavity 402.

[0089] The edge portion 31 of the first conductive element 3 is relative to the central hollow portion 32. The central hollow portion 32 provides space for the second contact portion 22 of the elastic conductive element 2 to move within the first mounting cavity 401 and contact the second conductive element 5 within the second mounting cavity 402, and avoids direct contact between the first conductive element 3 and the second conductive element 5.

[0090] Specifically, the inner diameter of the central hollow portion 32 can be larger than the outer diameter of the second contact portion 22, so that the second contact portion 22 can move and smoothly and reliably contact or separate from the second conductive element 5, thereby realizing the reliable realization of the overcurrent state and the current interruption state.

[0091] The edge portion 31 is provided on the cavity wall of the first mounting cavity 401 near the second mounting cavity 402, so as to... Figure 3 In terms of orientation, the edge portion 31 is located on the inner top wall of the first mounting cavity 401. Specifically, the connection between the edge portion 31 and the first mounting cavity 401 can be bonded or partially embedded.

[0092] For example, a portion of the edge portion 31 is embedded in the cavity wall of the first mounting cavity 401, and another portion extends into the first mounting cavity 401. The portion extending into the first mounting cavity 401 can be electrically connected to the first contact portion 21. Here, the portion and the other portion are arranged in the y-direction of the first conductive element 3, and the specific direction of the y-direction is as follows: Figure 3 The meaning is as shown.

[0093] For example, if the edge portion 31 is attached to the cavity wall of the first mounting cavity 401, then the edge portion 31 and the first contact portion 21 can be electrically connected.

[0094] Based on any of the above embodiments, please refer to Figure 1 , Figure 5 The edge portion 31 includes an ear portion 312 and a fitting portion 311. The ear portion 312 includes a vertical portion 3121 and a horizontal portion 3122 connected thereto. The fitting portion 311 is connected to the vertical portion 3121 and electrically connected to the first contact portion 21. The horizontal portion 3122 extends in a direction away from the center of the intermediate hollow portion 32 and is connected to the mounting groove 41 of the connector 4.

[0095] The ear portion 312 includes a vertical portion 3121 and a horizontal portion 3122, which are connected. The vertical portion 3121 is connected to the fitting portion 311, and the fitting portion 311, the vertical portion 3121, and the horizontal portion 3122 are integrally formed. Based on the first conductive element 3 being a conductive sheet, both the vertical portion 3121 and the horizontal portion 3122 can be formed by bending.

[0096] The horizontal portion 3122 extends away from the center of the central hollow portion 32. Specifically, the horizontal portion 3122 can connect with the mounting groove 41 provided on the connector 4. The mounting groove 41 restricts the displacement of the first conductive member 3 relative to the connector 4, ensuring reliable installation of the first conductive member 3. The position and shape of the mounting groove 41 provided on the connector 4 can be set according to the position and shape of the horizontal portion 3122 of the first conductive member 3, without excessive restrictions.

[0097] In one embodiment, the mounting groove 41 and the horizontal portion 3122 are nested together. When the horizontal portion 3122 is embedded in the mounting groove 41, the fitting portion 311 fits against the cavity wall of the first mounting cavity 401 to ensure reliable installation of the first conductive element 3. Furthermore, the electrical connection between the fitting portion 311 and the first contact portion 21 is achieved through the fitting of the first contact portion 21 and the fitting portion 311.

[0098] like Figure 5 As shown, ears 312 are provided on both sides of the central hollow part 32, that is, two mounting grooves 41 are provided on the corresponding connector 4. The connection between the mounting grooves 41 and the horizontal part 3122 of the ears 312 can ensure the reliable and stable installation between the first conductive part 3 and the connector 4.

[0099] Alternatively, three or more ears 312 may be provided around the central hollow section 32. The specific number can be flexibly set according to the actual situation without too many restrictions.

[0100] Based on any of the above embodiments, please refer to Figure 3 , Figure 6 The second conductive element 5 includes a protrusion 51 and a flat portion 52 connected to the protrusion 51. The flat portion 52 can be electrically connected to the battery protection board 02. The protrusion 51 is fitted to the cavity wall of the second mounting cavity 402.

[0101] like Figure 3 As shown, the protrusion 51 is fitted into the second mounting cavity 402, and the flat portion 52 is electrically connected to the battery protection plate 02. The shape of the protrusion 51 is not limited; it can be trapezoidal or square. During the movement of the second contact portion 22, specifically, the second contact portion 22 and the protrusion 51 come into contact or separate, correspondingly generating a battery insertion overcurrent signal and a battery removal current cut-off signal.

[0102] Furthermore, it should be noted that the edge of the protrusion 51 and the central hollow portion 32 do not contact each other. When the battery is inserted into the battery compartment, when the second edge B and the protrusion 51 contact, the first conductive member 3 and the second conductive member 5 are connected through the second edge B, corresponding to the formation of a battery insertion overcurrent signal, causing overcurrent between the multiple cells of the battery structure. When the battery is removed from the battery compartment, the second edge B and the protrusion 51 separate, the first conductive member 3 and the second conductive member 5 are no longer connected, corresponding to the formation of a battery removal current cut-off signal, causing current cut-off between the multiple cells of the battery structure.

[0103] In one embodiment, one side of the planar portion 52 is fitted to the outer periphery of the connector 4, and the other side of the planar portion 52 is electrically connected to the battery protection plate 02. The fitting of the planar portion 52 to the outer periphery of the connector 4, the fitting of the protrusion 51 and the second mounting cavity 402 are all used to achieve reliable and stable installation of the second conductive member 5 relative to the connector 4.

[0104] In another embodiment, the flat portion 52 is attached to the battery protection plate 02, and the protruding portion 51 is attached to the second mounting cavity 402 to ensure that the second conductive member 5 is reliably and securely installed relative to the connector 4.

[0105] Based on any of the above embodiments, please refer to Figure 6 The protrusion 51 includes a first part 511 and a second part 512 connected to the first part 511. The first part 511 is at least partially located in the first mounting cavity 401, and the second part 512 is disposed in contact with the cavity wall of the second mounting cavity 402.

[0106] like Figure 6As shown, at least a portion of the first part 511 is located within the first mounting cavity 401. Specifically, the first part 511 can pass through the central hollow portion 32 of the first conductive member 3 and extend into the first mounting cavity 401; specifically, at least a portion of the first part 511 can be located within the central hollow portion 32. The second contact portion 22 of the elastic conductive member 2 can reliably contact and separate from the first part 511 by moving.

[0107] The second part 512 is fitted into the second mounting cavity 402, and the flat part 52 extends outward relative to the second part 512 and is disposed between the connector 4 and the battery protection plate 02 to ensure reliable installation of the second conductive member 5 relative to the connector 4.

[0108] Based on any of the above embodiments, please refer to the figure, the first edge A of the first portion 511 away from the second mounting cavity 402 and the second edge B of the first conductive member 3 close to the first contact portion 21 are flush.

[0109] like Figure 3 As shown, the elastic conductive member 2 is in a horizontal state when it contacts the first part 511. By restricting the alignment of the first edge A and the second edge B, after the elastic conductive member 2 moves into place, the first contact part 21 maintains reliable contact with the first conductive member 3, and the second contact part 22 maintains reliable contact with the second conductive member 5, so that the first conductive member 3 and the second conductive member 5 can reliably conduct, so as to form a battery insertion current conduction signal and enable overcurrent in the battery.

[0110] Based on any of the above embodiments, please refer to Figure 8 The battery structure includes a battery lower cover 04, and a protective groove 041 is provided inside the battery lower cover 04. The protective groove 041 has openings on both sides along the direction parallel to the second contact part 22, and the connector 4 is fixed in the protective groove 041.

[0111] The protective groove 041 provides protection for the switch assembly 01 and fixes the switch assembly 01 relative to the battery structure. When the battery structure is inserted or removed from the battery compartment, the second contact portion 22 of the elastic conductive member 2 can move to contact or separate from the second conductive member 5, thereby turning on or off the first conductive member 3 and the second conductive member 5 to form a battery insertion overcurrent signal and a battery removal current cut-off signal.

[0112] When the battery protection board 02 detects a battery insertion overcurrent signal, it activates the overcurrent protection; when the battery protection board 02 detects a battery removal interruption signal, it disconnects the overcurrent protection, thus putting the battery structure into a safe state.

[0113] Based on any of the above embodiments, please refer to Figure 9The opening of the protective groove 041 on the side away from the second conductive member 5 is provided with a third edge C, and the sliding member 1 that can be slidably disposed in the connector 4 is provided with a fourth edge D, the fourth edge D not exceeding the third edge C.

[0114] By ensuring that the fourth edge D does not exceed the third edge C, the sliding member 1 is prevented from being squeezed when the battery is laid flat and stationary, thus preventing abnormal movement of the second contact portion 22 of the elastic conductive member 2. This ensures the reliability and safety of the operation of the elastic conductive member 2 and the sliding member 1, and achieves the reliability and safety of automatic control that connects when the battery is inserted and disconnects when it is removed.

[0115] In addition to the battery protection device described above, this utility model also provides an electrical device that includes the battery protection device of any of the above embodiments, and the electrical device may specifically include, but is not limited to, a laptop computer.

[0116] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0117] The battery protection device and electrical equipment provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A battery protection device, characterized by, include: Battery structure; A battery compartment, wherein the battery structure is pluggably connected to the battery compartment; The switch assembly (01) includes a connector (4), a first conductive element (3), a second conductive element (5), and an elastic conductive element (2). The connector (4) is connected to the battery structure. The first conductive element (3) and the second conductive element (5) are both connected to the connector (4). The second conductive element (5) is signal connected to the battery protection board (02) of the battery structure. The elastic conductive element (2) is movably disposed within the connector (4). The connection and disconnection between the battery structure and the battery compartment make the elastic conductive element (2) movable. The movement of the elastic conductive element (2) makes the first conductive element (3) and the second conductive element (5) connected or disconnected, so as to respectively form a battery insertion overcurrent signal or a battery removal current cut-off signal.

2. The battery protection apparatus of claim 1, wherein The elastic conductive element (2) includes a first contact portion (21) and a second contact portion (22). The first contact portion (21) and the first conductive element (3) are electrically connected. The second contact portion (22) is movably disposed within the connector (4) to contact or separate from the second conductive element (5).

3. The battery protection apparatus of claim 2, wherein It also includes a slider (1), which is slidably connected to the connector (4), and the sliding of the slider (1) corresponds to the contact or separation of the second contact portion (22) and the second conductive element (5).

4. The battery protection apparatus of claim 3, wherein It also includes a trigger (03), which is disposed in the battery compartment. The connection or disconnection between the battery structure and the battery compartment corresponds to the contact or separation of the trigger (03) and the slider (1), respectively.

5. The battery protection apparatus of claim 3, wherein The connector (4) has a first mounting cavity (401) and a second mounting cavity (402) arranged sequentially along the first direction. The first mounting cavity (401) and the second mounting cavity (402) are connected. The first direction is the direction in which the second contact part (22) moves closer to the second conductive part (5). The first conductive element (3) is connected to the cavity wall of the first mounting cavity (401), and the second conductive element (5) is connected to the cavity wall of the second mounting cavity (402).

6. The battery protection apparatus of claim 5, wherein The slider (1) includes a first sliding part (11) and a second sliding part (12) connected thereto. Either the first sliding part (11) or the second sliding part (12) is disposed in the first mounting cavity (401), and the other extends at least partially out of the first mounting cavity (401) in a direction away from the second mounting cavity (402). The cavity wall of the first mounting cavity (401) is provided with a limiting groove (42), which is located at the end of the moving path of the first sliding part (11) moving away from the second contact part (22).

7. The battery protection apparatus of claim 5, wherein The first conductive element (3) includes an edge portion (31) and a central hollow portion (32). The first mounting cavity (401) and the second mounting cavity (402) are both connected to the central hollow portion (32). The edge portion (31) is disposed on the cavity wall of the first mounting cavity (401) near the second mounting cavity (402). The edge portion (31) includes an ear portion (312) and a fitting portion (311). The ear portion (312) includes a vertical portion (3121) and a horizontal portion (3122) connected thereto. The fitting portion (311) is connected to the vertical portion (3121) and electrically connected to the first contact portion (21). The horizontal portion (3122) extends in a direction away from the center of the intermediate hollow portion (32). The horizontal portion (3122) is connected to the mounting groove (41) of the connector (4).

8. The battery protection apparatus of claim 5, wherein The second conductive element (5) includes a protrusion (51) and a flat portion (52) connected to the protrusion (51). The flat portion (52) can be electrically connected to the battery protection board (02). The protrusion (51) is disposed in contact with the cavity wall of the second mounting cavity (402). The protrusion (51) includes a first part (511) and a second part (512) connected to the first part (511). The first part (511) is at least partially located in the first mounting cavity (401), and the second part (512) is disposed in contact with the cavity wall of the second mounting cavity (402). The first edge (A) of the first portion (511) away from the second mounting cavity (402) and the second edge (B) of the first conductive element (3) close to the first contact portion (21) are flush.

9. The battery protection apparatus of claim 3, wherein The battery structure includes a battery lower cover (04), and a protective groove (041) is provided inside the battery lower cover (04). The protective groove (041) has openings on both sides in a direction parallel to the second contact portion (22), and the connector (4) is fixed inside the protective groove (041). The opening of the protective groove (041) on the side away from the second conductive member (5) is provided with a third edge (C), and the sliding member (1) is provided with a fourth edge (D), which is not set beyond the third edge (C).

10. An electric device, characterized by Includes the battery protection device as described in any one of claims 1 to 9.

Images