Battery pack with emergency drop function and vehicle

Abstract

The application discloses a battery pack with an emergency falling function and a vehicle. The battery pack with the emergency falling function comprises a box shell, a first electromagnet, a battery end controller and a first electric connector. The box shell has a cavity, and a battery module is arranged in the cavity. The first electromagnet is arranged on the box shell and is electrically connected to the battery module through a first power supply circuit. The battery end controller is arranged on the box shell and is electrically connected to the battery module. The battery end controller is electrically connected to the first power supply circuit and can control the on-off of the first power supply circuit and / or the current direction of the first electromagnet. The first electric connector is arranged on the box shell. The battery pack with the emergency falling function is installed on a vehicle body in a magnetic adsorption mode. When thermal failure occurs in the battery pack, the battery end controller can quickly adjust the current direction of the first electromagnet to change the magnetic pole state, so that the battery pack is triggered to separate from the vehicle body to realize danger avoidance, and the safety and reliability of emergency danger avoidance of the vehicle are improved.

Description

Technical Field

[0001] This application relates to the field of battery pack technology, and in particular to a battery pack and vehicle with an emergency drop function. Background Technology

[0002] With the rapid development of new energy vehicles, the safety performance of battery packs, as their core power components, has become a major concern. During the use of battery packs, thermal runaway is an extremely dangerous accident. Once it occurs, traditional battery packs are usually fixedly connected to the vehicle body and cannot be detached. High-temperature flames and toxic gases can easily spread rapidly to the entire vehicle, causing it to catch fire and seriously threatening the lives of passengers and occupants.

[0003] In related technologies, a spring mechanism is provided as a push mechanism to push the battery pack to fall in the event of thermal runaway in order to avoid danger. However, the reliability of this spring mechanism is low, and it is difficult to ensure that the battery pack can be stably and effectively separated from the vehicle body in an emergency.

[0004] Therefore, how to quickly, safely, and reliably jettison the battery pack to avoid danger in the event of thermal runaway is an urgent problem to be solved.

[0005] In view of the above, this application is hereby submitted. Utility Model Content

[0006] To solve one of the above-mentioned technical problems, this utility model provides a battery pack and vehicle with an emergency drop function.

[0007] The present invention adopts the following technical solution:

[0008] The primary objective of this application is to provide a battery pack with an emergency drop function, comprising:

[0009] The casing has a cavity, and a battery module is disposed within the cavity;

[0010] A first electromagnet is disposed in the housing and is electrically connected to the battery module through a first power supply circuit.

[0011] A battery-side controller is disposed in the housing, electrically connected to the battery module, and electrically connected to the first power supply circuit, capable of controlling the on / off state of the first power supply circuit and / or the current direction of the first electromagnet.

[0012] A first electrical connector is disposed on the housing and is electrically connected to the battery terminal controller and the battery module.

[0013] Optionally, the battery pack with emergency drop function includes a plurality of first electromagnets;

[0014] Each of the first electromagnets is arranged sequentially at intervals along the periphery of the housing.

[0015] Optionally, the battery pack with emergency drop function includes a mounting base;

[0016] The mounting base is connected to the housing, and the mounting base extends outward from the housing.

[0017] The first electromagnet is mounted on the mounting base.

[0018] Optionally, the mounting base includes a base plate, an upright plate, and a main support;

[0019] The base plate is attached to the bottom of the housing;

[0020] The upright plate is attached to the side of the box shell;

[0021] The main support is located between the base plate and the upright plate, and the main support is connected to the base plate and the upright plate respectively. The main support includes a mounting plate.

[0022] The first electromagnet is mounted on the mounting plate.

[0023] Optionally, the battery pack with emergency drop function includes a second electromagnet, which is disposed on the first electrical connector or disposed on the housing and close to the first electrical connector.

[0024] The second electromagnet is electrically connected to the battery module through a second power supply circuit;

[0025] The battery terminal controller is electrically connected to the second power supply circuit and can control the on / off state of the second power supply circuit and / or the current direction of the second electromagnet.

[0026] Optionally, the first electrical connector includes an insulating base and a plurality of terminals;

[0027] The insulating base is disposed on the housing, and each of the terminals is disposed on the insulating base;

[0028] The second electromagnet is disposed on the insulating base and located outside each of the terminals.

[0029] Optionally, the battery pack with emergency drop function includes a sealing ring;

[0030] The insulating base is provided with a plug mating ring rib;

[0031] Each of the terminals is located inside the mating ring rib of the plug;

[0032] The plug mating ring has an annular groove, and the sealing ring is embedded in the plug mating ring;

[0033] The second electromagnet is located outside the plug mating ring.

[0034] The second objective of this application is to provide a vehicle comprising:

[0035] The vehicle body is equipped with a vehicle-end power supply, a vehicle-end controller, and multiple third electromagnets. The third electromagnets are electrically connected to the vehicle-end power supply through a third power supply circuit. The vehicle-end controller is electrically connected to the third power supply circuit and can control the on / off state of the third power supply circuit and / or the current direction of the third electromagnets.

[0036] Such as the battery pack with emergency drop function mentioned above;

[0037] The battery pack has an installed state and an emergency drop state;

[0038] In the aforementioned installation state, each first electromagnet is positioned opposite to the corresponding third electromagnet and is magnetically attracted to it.

[0039] In the emergency ejection state, the first electromagnet and the third electromagnet repel each other magnetically, and the battery pack detaches from the vehicle body.

[0040] Optionally, the vehicle includes a cable electrically connected to the vehicle-side controller;

[0041] The free end of the cable is provided with a fourth electromagnet and a second electrical connector.

[0042] The fourth electromagnet is electrically connected to the vehicle-end power supply through the fourth power supply circuit. The vehicle-end controller is electrically connected to the fourth power supply circuit and can control the on / off state of the fourth power supply circuit and / or the current direction of the fourth electromagnet.

[0043] In the installed state, the second electrical connector and the first electrical connector are electrically connected, and the fourth electromagnet and the second electromagnet on the battery pack are magnetically attracted to each other;

[0044] In the emergency drop state, the second electromagnet and the fourth electromagnet repel each other magnetically, and the first electrical connector and the second electrical connector separate.

[0045] Optionally, the vehicle body has a chassis;

[0046] The third electromagnet is mounted on the chassis;

[0047] In the installed state, the battery pack is located at the bottom of the chassis.

[0048] By adopting the above technical solution, this application has the following beneficial effects:

[0049] The battery pack with emergency drop function of this application is installed on the vehicle body by magnetic adsorption. When thermal failure occurs in the battery pack, the battery end controller can quickly adjust the current direction of the first electromagnet to change its magnetic pole state, thereby triggering the battery pack to detach from the vehicle body to avoid danger, thus improving the safety and reliability of vehicle emergency avoidance.

[0050] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0051] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0052] Figure 1 This is a schematic diagram of the structure of a battery pack with emergency drop function provided in an embodiment of this application;

[0053] Figure 2 A front view of a battery pack with emergency drop function provided in an embodiment of this application;

[0054] Figure 3 This is a schematic diagram of the structure of the battery pack with emergency drop function connected to the first electrical connector and cable according to an embodiment of this application;

[0055] Figure 4 This is a structural diagram of the vehicle in its installed state, provided in an embodiment of this application.

[0056] Figure 5 A side view of the vehicle in its installed state, provided in an embodiment of this application;

[0057] Figure 6 This is a structural diagram of a vehicle in an emergency ejection state, as provided in an embodiment of this application.

[0058] Figure 7 This is a side view of a vehicle in an emergency ejection state, as provided in an embodiment of this application.

[0059] In the diagram: 1. Housing; 2. First electromagnet; 3. First electrical connector; 4. Insulating base; 5. Terminal; 6. Mounting base; 7. Base plate; 8. Vertical plate; 9. Main bracket; 10. Mounting plate; 11. Triangular inclined plate; 12. Second electromagnet; 13. Sealing ring; 14. Third electromagnet; 15. Cable; 16. Chassis; 17. Second electrical connector.

[0060] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0061] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0062] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0063] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0064] Example 1

[0065] like Figures 1 to 3As shown in the figure, Embodiment 1 of this application provides a battery pack with an emergency drop function, including: a housing 1, a first electromagnet 2, a battery end controller (not shown), and a first electrical connector 3. The housing 1 has a cavity, and a battery module (not shown) is disposed in the cavity. The first electromagnet 2 is disposed on the housing 1 and is electrically connected to the battery module through a first power supply circuit (not shown). The battery end controller is disposed on the housing 1 and is electrically connected to the battery module. The battery module supplies power to the battery end controller. The battery end controller is electrically connected to the first power supply circuit and can control the on / off state of the first power supply circuit and / or the current direction of the first electromagnet 2. The battery end controller can be a BMS module. The BMS module can collect electrical signals inside the battery module, determine the presence of faults and thermal failure risks by identifying changes in voltage and temperature inside the battery module, and can control the on / off state of the first power supply circuit or change the current direction, thereby adjusting the current direction and magnetic pole state of the first electromagnet 2. The battery module provides power to the battery end controller. The first electrical connector 3 is disposed on the housing 1 and is electrically connected to both the battery-side controller and the battery module. Fault detection devices such as smoke detectors, temperature controllers, and gas controllers can be added inside the housing 1 to assist in monitoring environmental changes within the housing 1, and these fault detection devices are all electrically connected to the battery-side controller. When a fault or thermal failure occurs inside the housing 1, each fault detection device transmits the collected signals to the battery-side controller. After identifying the fault, the battery-side controller feeds back the signal to the vehicle-side controller via the first electrical connector 3. Upon receiving the fault signal, the vehicle-side controller prompts the user and executes the corresponding processing operation only after the user issues an instruction.

[0066] The battery pack with emergency drop function of this application is installed on the vehicle body by magnetic adsorption. When thermal failure occurs in the battery pack, the battery end controller can quickly adjust the current direction of the first electromagnet 3 to change its magnetic pole state, thereby triggering the battery pack to detach from the vehicle body to avoid danger, thus improving the safety and reliability of vehicle emergency avoidance.

[0067] The battery pack with emergency drop function includes multiple first electromagnets 2, which are arranged sequentially and at intervals along the periphery of the casing 1. This ensures a more uniform distribution of the magnetic attraction force between the battery pack and the vehicle body, guaranteeing stable installation. Simultaneously, the coordinated action of multiple first electromagnets 2 avoids force deviations when a single first electromagnet 2 is triggered, further improving the synchronicity and accuracy of the battery pack detaching from the vehicle body in the event of thermal failure, and enhancing the reliability of the emergency drop action.

[0068] In one possible implementation, the battery pack with emergency drop function includes a mounting base 4 connected to the housing 1 and extending outward from the housing 1. The first electromagnet 2 is mounted on the mounting base 4. This structure, by mounting the first electromagnet 2 through the outwardly extending mounting base 4, does not occupy the internal space of the housing 1, yet it can stably support the first electromagnet 2 to ensure the reliability of the emergency drop function, and also facilitates subsequent inspection and maintenance.

[0069] The mounting base 4 includes a base plate 41, a vertical plate 42, and a main support 43. The base plate 41 is fitted to the bottom of the housing 1, the vertical plate 42 is fitted to the side of the housing 1, and the main support 43 is located between the base plate 41 and the vertical plate 42, and is connected to both the base plate 41 and the vertical plate 42. The main support 43 includes a mounting plate 431 on which the first electromagnet 2 is mounted. The main support 43 also includes a triangular inclined plate 432, which connects the mounting plate 431, the base plate 41, and the vertical plate 42. The triangular inclined plate 432 strengthens the structure of the mounting base 4, resulting in high structural strength and good stability. The mounting base 4 securely fixes the first electromagnet 2 without occupying internal space of the housing 1, and facilitates the installation and subsequent maintenance of the first electromagnet 2.

[0070] In one possible implementation, the battery pack with emergency drop function includes a second electromagnet 5. The second electromagnet 5 is disposed on the first electrical connector 3 or on the housing 1 and close to the first electrical connector 3. The second electromagnet 5 is electrically connected to the battery module through a second power supply circuit (not shown). The battery end controller is electrically connected to the second power supply circuit and can control the on / off state of the second power supply circuit and / or the current direction of the second electromagnet 5. Traditional battery packs and vehicle bodies often have fixed connectors, lacking rapid separation capabilities. Even if the push-top mechanism is triggered, the connector cannot be disconnected in time, further affecting the smooth detachment of the battery pack and resulting in poor hazard avoidance, failing to fundamentally solve the safety hazards caused by thermal runaway. The battery pack with emergency drop function of this application has a second electromagnet 5. When thermal failure occurs inside the battery pack, the battery end controller can quickly adjust the current direction of the second electromagnet 5 to change its magnetic pole state, causing magnetic repulsion with the electromagnet on the vehicle body, thereby achieving stable and reliable rapid circuit separation.

[0071] The first electrical connector 3 includes an insulating base 31 and multiple terminals 32. The insulating base 31 is disposed on the housing 1, and each of the terminals 32 is disposed on the insulating base 31. The second electromagnet 5 is disposed on the insulating base 31 and located outside each of the terminals 32. The second electromagnet 5's location outside the terminals 32 of the insulating base 31 of the first electrical connector 3 allows for stable installation using the insulating base 31, avoiding the occupation of extra space in the housing 1. It also maintains a reasonable distance from the terminals 32, preventing interference with the electrical connection function, and facilitates the inspection and maintenance of the second electromagnet 5.

[0072] In one possible implementation, the battery pack with emergency drop function includes a sealing ring 6. A plug-fitting ring is provided on the insulating base 31, and each terminal 32 is located inside the plug-fitting ring. The plug-fitting ring has an annular groove, and the sealing ring 6 is embedded in the plug-fitting ring. The second electromagnet 5 is located outside the plug-fitting ring. The annular groove embedded in the sealing ring 6 enhances the sealing performance of the structure, preventing external moisture and dust from intruding and affecting the electrical connection of the terminals 32. Simultaneously, the second electromagnet 5 is located outside the ring, which neither interferes with the sealing structure and the function of the terminals 32, nor hinders stable installation using the space surrounding the plug-fitting ring. The overall layout is compact and reasonable.

[0073] Example 2

[0074] like Figures 4 to 7As shown, Embodiment 2 of this application provides a vehicle, including: a vehicle body (not shown) and a battery pack with an emergency drop function as described above. The vehicle body is equipped with a vehicle-end power supply (not shown), a vehicle-end controller (not shown), and multiple third electromagnets 7. The third electromagnets 7 are electrically connected to the vehicle-end power supply via a third power supply circuit (not shown). The vehicle-end controller is electrically connected to the third power supply circuit and can control the on / off state of the third power supply circuit and / or the current direction of the third electromagnets 7. The battery pack has an installed state and an emergency drop state. In the installed state, each first electromagnet 2 and its corresponding third electromagnet 7 are positioned opposite each other and magnetically attracted. In the emergency drop state, the first electromagnets 2 and the third electromagnets magnetically repel each other, and the battery pack detaches from the vehicle body. The vehicle-end controller can be a VCU module. The vehicle-end power supply provides power to the third electromagnets 7. The vehicle of this application controls the third power supply circuit through the vehicle controller, causing the third electromagnets 7 and the first electromagnets 2 to form a magnetic attraction, thereby firmly maintaining the installed state of the battery pack. When the BMS module detects thermal runaway inside the battery pack, it transmits a fault signal to the vehicle controller via the first electrical connector 3. The vehicle controller then issues an alarm, allowing the user to initiate a battery pack ejection operation at an appropriate time via a trigger button. There are two ejection modes after triggering: First, the vehicle controller directly controls the third electromagnet 7 to change the current direction and switch its magnetic poles, causing the third electromagnet 7 to repel the first electromagnet 2, thus detaching the battery pack from the vehicle body. Second, the vehicle controller feeds back the trigger signal to the BMS module via cable 8 and the first electrical connector. The BMS module then controls the current direction of the first power supply circuit and the magnetic poles of the first electromagnet 2, causing the first electromagnet 2 to repel the third electromagnet 7, thus detaching the battery pack from the vehicle body. This design ensures the reliability of the battery pack installation during daily driving while efficiently implementing an emergency ejection function, improving vehicle driving safety. The overall control logic is clear and the layout is reasonable.

[0075] The vehicle includes a cable 8 electrically connected to the vehicle-side controller. The free end of the cable 8 is equipped with a fourth electromagnet (not shown) and a second electrical connector 10. The fourth electromagnet is electrically connected to the vehicle-side power supply via a fourth power supply circuit. The vehicle-side controller is electrically connected to the fourth power supply circuit and can control the on / off state of the fourth power supply circuit and / or the current direction of the fourth electromagnet. In the installed state, the second electrical connector 10 and the first electrical connector 3 are electrically connected, and the fourth electromagnet and the second electromagnet 5 on the battery pack are magnetically attracted. In the emergency drop state, the second electromagnet 5 and the fourth electromagnet are magnetically repelled, and the first electrical connector 3 and the second electrical connector 10 separate. In the installed state, the fourth electromagnet can both securely connect to the second electromagnet 5 of the battery pack through magnetic attraction and achieve a reliable electrical connection between the second electrical connector 10 and the first electrical connector 3. In the emergency drop state, by controlling the change of the current direction of the fourth power supply circuit or the second power supply circuit, the magnetic repulsion between the fourth electromagnet and the second electromagnet 5 is achieved, thereby realizing the separation of the first electrical connector 3 and the unlocking of the battery pack. This ensures the stability of daily connection and can quickly complete the emergency separation action, improving the coordination and reliability of emergency drop. The overall structure is compact and the control is efficient.

[0076] In one possible implementation, the vehicle body has a chassis 9, and the third electromagnet 7 is disposed on the chassis 9. In the installed state, the battery pack is located at the bottom of the chassis 9. The magnetic attraction method not only securely installs the battery pack but also greatly simplifies the disassembly and assembly process, eliminating the need for complex mechanical structure operations and making battery replacement more convenient and efficient. Furthermore, combined with the emergency drop function, it balances daily usability and driving safety.

[0077] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A battery pack with an emergency drop function, characterized in that, include: The casing has a cavity, and a battery module is disposed within the cavity; A first electromagnet is disposed in the housing and is electrically connected to the battery module through a first power supply circuit. A battery-side controller is disposed in the housing, electrically connected to the battery module, and electrically connected to the first power supply circuit, capable of controlling the on / off state of the first power supply circuit and / or the current direction of the first electromagnet. A first electrical connector is disposed on the housing and is electrically connected to the battery terminal controller and the battery module.

2. The battery pack with emergency drop function according to claim 1, characterized in that, Includes multiple first electromagnets; Each of the first electromagnets is arranged sequentially at intervals along the periphery of the housing.

3. The battery pack with emergency drop function according to claim 1, characterized in that, Including mounting base; The mounting base is connected to the housing, and the mounting base extends outward from the housing. The first electromagnet is mounted on the mounting base.

4. The battery pack with emergency drop function according to claim 3, characterized in that, The mounting base includes a base plate, an upright plate, and a main support; The base plate is attached to the bottom of the housing; The upright plate is attached to the side of the box shell; The main support is located between the base plate and the upright plate, and the main support is connected to the base plate and the upright plate respectively. The main support includes a mounting plate. The first electromagnet is mounted on the mounting plate.

5. The battery pack with emergency drop function according to claim 1, characterized in that, Includes a second electromagnet, which is disposed on the first electrical connector or disposed on the housing and close to the first electrical connector; The second electromagnet is electrically connected to the battery module through a second power supply circuit; The battery terminal controller is electrically connected to the second power supply circuit and can control the on / off state of the second power supply circuit and / or the current direction of the second electromagnet.

6. The battery pack with emergency drop function according to claim 5, characterized in that, The first electrical connector includes an insulating base and multiple terminals; The insulating base is disposed on the housing, and each of the terminals is disposed on the insulating base; The second electromagnet is disposed on the insulating base and located outside each of the terminals.

7. The battery pack with emergency drop function according to claim 6, characterized in that, Including sealing rings; The insulating base is provided with a plug mating ring rib; Each of the terminals is located inside the mating ring rib of the plug; The plug mating ring has an annular groove, and the sealing ring is embedded in the plug mating ring; The second electromagnet is located outside the plug mating ring.

8. A vehicle, characterized in that, include: The vehicle body is equipped with a vehicle-end power supply, a vehicle-end controller, and multiple third electromagnets. The third electromagnets are electrically connected to the vehicle-end power supply through a third power supply circuit. The vehicle-end controller is electrically connected to the third power supply circuit and can control the on / off state of the third power supply circuit and / or the current direction of the third electromagnets. Battery pack with emergency drop function as described in any one of claims 1-7; The battery pack has an installed state and an emergency drop state; In the aforementioned installation state, each first electromagnet is positioned opposite to the corresponding third electromagnet and is magnetically attracted to it. In the emergency ejection state, the first electromagnet and the third electromagnet repel each other magnetically, and the battery pack detaches from the vehicle body.

9. The vehicle according to claim 8, characterized in that, Includes cables, which are electrically connected to the vehicle-end controller; The free end of the cable is provided with a fourth electromagnet and a second electrical connector. The fourth electromagnet is electrically connected to the vehicle-end power supply through the fourth power supply circuit, and the vehicle-end controller is electrically connected to the fourth power supply circuit and can control the on / off state of the fourth power supply circuit and / or the current direction of the fourth electromagnet. In the installed state, the second electrical connector and the first electrical connector are electrically connected, and the fourth electromagnet and the second electromagnet on the battery pack are magnetically attracted to each other; In the emergency drop state, the second electromagnet and the fourth electromagnet repel each other magnetically, and the first electrical connector and the second electrical connector separate.

10. The vehicle according to claim 8, characterized in that, The vehicle body has a chassis; The third electromagnet is mounted on the chassis; In the installed state, the battery pack is located at the bottom of the chassis.

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