Collision self-adaption method and system of power battery

Abstract

The invention provides a collision self-adaption method and system for a power battery, and the system comprises a top cover, a box body matched with the top cover, a battery module, a battery control unit and a high-voltage unit, the box body comprises a box body outer frame, a box body inner frame, a plurality of motion units and a box body frame upper periphery; the motion unit is composed of a motion base and a motion mechanism, one side of the motion mechanism is a bottom ball, and the other side is a support. The bottom ball is movably arranged in a groove, matched with the bottom ball, in the moving base; motion bases in a plurality of motion units are arranged on the periphery of one side, close to the box body outer frame, of the box body inner frame; a coil and a high-voltage wire are arranged in the moving base; a permanent magnet is arranged in the bottom ball; a cavity space defined by the box body inner frame, the box body outer frame and the box body frame is used for containing a movement mechanism in the movement unit to move. Through the embodiment, the safety protection of the power battery can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of electric vehicles, and in particular to a collision adaptive method and system for a power battery. Background Art

[0002] With the rapid development of electric vehicles, the safety of electric vehicles has received more and more attention. It is common for electric vehicles to be deformed by impacts on their bodies and power batteries after collisions. The extrusion of the battery cells in the power battery can easily cause thermal runaway, which can cause the power battery to catch fire and explode. Once the power battery explodes or catches fire, the safety of life and property of the passengers in the car will be seriously threatened. Therefore, when an electric vehicle encounters a collision, the protection and safety of the power battery is quite important. Summary of the invention

[0003] In view of this, the purpose of the present application is to provide a collision adaptive method and system for a power battery, so as to improve the safety protection of the power battery when an electric vehicle encounters a collision.

[0004] In a first aspect, an embodiment of the present application provides a collision adaptive method for a power battery, and the method is applied to a collision adaptive system for a power battery; the system comprises: a top cover, a box body matching the top cover, a battery module and a battery control unit arranged in the box body, and a high-voltage unit; the box body comprises an outer frame of the box body, an inner frame of the box body, a plurality of motion units, and an upper enclosure of the box body frame; the motion unit is composed of a motion base and a motion mechanism, one side of the motion mechanism is a bottom ball, and the other side is a bracket; the bottom ball is movably arranged in a groove matching the bottom ball in the motion base; a plurality of the motion bases in the motion unit are arranged around the inner frame of the box body close to one side of the outer frame of the box body; a coil and a high-voltage wire are arranged in the motion base, and a permanent magnet is arranged in the bottom ball; the cavity space formed by the inner frame of the box body, the outer frame of the box body and the upper enclosure of the box body frame is used to accommodate the motion mechanism in the motion unit for movement; the method comprises:

[0005] The battery control unit receives the predicted collision position and predicted collision energy of the whole vehicle sent by the whole vehicle controller; wherein the predicted collision position of the whole vehicle is predicted by the whole vehicle controller according to the received identification data before the electric vehicle collides; the identification data is collected by the identification system arranged on the body of the electric vehicle; the predicted collision energy of the whole vehicle is predicted by the whole vehicle controller according to the relative speed between the electric vehicle and the object being collided and the model of the electric vehicle;

[0006] The battery control unit predicts the predicted collision position of the box on the outer frame of the box and the predicted collision energy of the box borne by the outer frame of the box according to the predicted collision position of the whole vehicle and the predicted collision energy of the whole vehicle; wherein the battery module in the box, the battery control unit and the high-voltage unit constitute a power battery;

[0007] The battery control unit determines the first area to be collided including the predicted collision position of the box body in the outer frame of the box body according to the predicted collision position of the box body and the predicted collision energy of the box body, so as to determine the power unit located in the second area to be collided in the inner frame of the box body as the first power unit; wherein the first area to be collided and the second area to be collided are orthographic projections of each other on the side surface of the box body;

[0008] The battery control unit determines the first current required by the coil in the moving base of each of the first power units based on the predicted collision position of the box and the predicted collision energy of the box, so as to send the first current required by each of the coils to the high-voltage wires in the first power units respectively corresponding to the first power units;

[0009] The high-voltage wire in the first power unit provides current to the coil according to the first current so that the coil generates magnetic force, and according to the strongest magnetic point in the coil, drives the permanent magnet in the first power unit to drive the bottom ball to move toward the strongest magnetic point to change the orientation of the bracket in the first power unit so that the orientation of the bracket in the first power unit is the direction of the predicted collision position of the box in the first collision area.

[0010] In combination with the first aspect, the embodiment of the present application provides a first possible implementation of the first aspect, wherein, according to the strongest magnetic point in the coil, the permanent magnet in the first power unit is driven to drive the bottom ball to move toward the strongest magnetic point to change the orientation of the bracket in the first power unit so that the orientation of the bracket in the first power unit is the direction of the predicted collision position of the box in the first collision area, and the method further includes:

[0011] When the electric vehicle collides, the battery control unit receives the actual collision position and actual collision energy of the whole vehicle sent by the first collision sensor arranged on the body of the electric vehicle;

[0012] The battery control unit predicts the actual collision position of the box body decomposed on the box body outer frame and the actual collision energy of the box body borne by the box body outer frame based on the actual collision position of the whole vehicle and the actual collision energy of the whole vehicle;

[0013] The battery control unit determines the first collision area including the predicted collision position of the box in the outer frame of the box according to the actual collision position of the box and the actual collision energy of the box, so as to determine the power unit located in the second collision area in the inner frame of the box as the second power unit; wherein the first collision area and the second collision area are orthographic projections of each other on the side of the box;

[0014] The battery control unit determines the second current required by the coil in the moving base of each second power unit based on the actual collision position of the box and the actual collision energy of the box, so as to send the second current to the high-voltage line in the second power unit respectively corresponding to the second power unit;

[0015] The high-voltage wire in the second power unit provides current to the coil according to the second current, so that the coil generates magnetic force, and according to the strongest magnetic point in the coil, drives the permanent magnet in the second power unit to drive the bottom ball to move toward the strongest magnetic point, so as to adjust the orientation of the bracket in the second power unit, so that the orientation of the bracket in the second power unit is adjusted to the direction of the actual collision position of the box in the first collision area.

[0016] In combination with the first aspect, the embodiment of the present application provides a second possible implementation of the first aspect, wherein, before the battery control unit receives the vehicle predicted collision position and vehicle predicted collision energy sent by the vehicle controller, the method further includes:

[0017] The battery control unit determines the target vehicle historical collision position and target vehicle historical collision energy with the highest number of collisions from the vehicle historical collision positions and vehicle historical collision energies of the electric vehicle in the historical time period;

[0018] The battery control unit determines the historical box collision position and the historical box collision energy borne by the box outer frame on the box outer frame according to the target vehicle historical collision position and the target vehicle historical collision energy;

[0019] The battery control unit determines the first historical collision area including the historical collision position of the box body in the outer frame of the box body according to the historical collision position of the box body and the historical collision energy of the box body, so as to determine the power unit located in the second historical collision area in the inner frame of the box body as the third power unit; wherein the first historical collision area and the second historical collision area are orthographic projections of each other on the side surface of the box body;

[0020] The battery control unit determines the third current required by the coil in the moving base of each of the third power units based on the historical box collision position and the historical box collision energy, so as to send the third current required by each of the coils to the high-voltage line in the corresponding third power unit;

[0021] The high-voltage wire in the third power unit provides current to the coil according to the third current so that the coil generates magnetic force, and according to the strongest magnetic point in the coil, drives the permanent magnet in the third power unit to drive the bottom ball to move toward the strongest magnetic point to change the orientation of the bracket in the third power unit, so that the orientation of the bracket in the third power unit is the direction of the historical box collision position in the first historical collision area, and the changed orientation of the bracket in each third power unit is used as the initial orientation of the bracket in each third power unit.

[0022] In combination with the first aspect, an embodiment of the present application provides a third possible implementation of the first aspect, wherein a damping structure or energy-absorbing material is also arranged inside the bottom ball; the damping structure is used to buffer the collision energy of the inner frame of the box body received by the inner frame of the box body; the energy-absorbing material is used to absorb the collision energy of the inner frame of the box body received by the inner frame of the box body.

[0023] In combination with the first aspect, an embodiment of the present application provides a fourth possible implementation of the first aspect, wherein a target number of reinforcing ribs are arranged around the inner frame of the box body, one end of the reinforcing rib is against the inner side of the outer frame of the box body, and the other end is arranged on the outer side of the inner frame of the box body.

[0024] In combination with the first aspect, the embodiment of the present application provides a fifth possible implementation of the first aspect, wherein a plurality of the motion units are arranged at the bottom of the inner frame of the box body close to the outer frame of the box body; a second collision sensor is arranged at the bottom of the electric vehicle;

[0025] When the battery control unit receives the actual collision position and the actual collision energy of the vehicle bottom sent by the second collision sensor, it predicts the collision position and the collision energy of the box bottom of the box outer frame according to the actual collision position and the actual collision energy of the vehicle bottom;

[0026] The battery control unit determines a first box bottom collision area including the box bottom collision position at the bottom of the box outer frame according to the box bottom collision position and the box bottom collision energy, and determines the power unit located in the second box bottom collision area at the bottom of the box inner frame as the fourth power unit; the first box bottom collision area and the second box bottom collision area are orthographic projections of each other on the side of the box;

[0027] The battery control unit determines the fourth current required by the coil in the moving base of each of the fourth power units based on the collision position of the bottom of the box and the collision energy of the bottom of the box, so as to send each of the fourth currents to the high-voltage wires in the corresponding fourth power units;

[0028] The high-voltage wire in the fourth power unit provides current to the coil according to the fourth current, so that the coil generates magnetic force, and according to the strongest magnetic point in the coil, drives the permanent magnet in the fourth power unit to drive the bottom ball to move toward the strongest magnetic point, so as to change the orientation of the bracket in the fourth power unit, so that the orientation of the bracket in the fourth power unit is the direction of the bottom collision position of the box in the bottom collision area of ​​the first box.

[0029] In combination with the first aspect, the embodiment of the present application provides a sixth possible implementation of the first aspect, wherein the internal structure of the bracket in the motion mechanism is any one of the following structures: a solid structure, a hollow structure, and a hollow multi-cavity structure.

[0030] In combination with the first aspect, the embodiment of the present application provides a seventh possible implementation manner of the first aspect, wherein the identification system is a radar, and the identification data is radar data;

[0031] Alternatively, the recognition system is a visual recognition system, and the recognition data is image data or video data.

[0032] In a second aspect, an embodiment of the present application further provides a collision adaptive system for a power battery, the system comprising: a top cover, a box body matching the top cover, a battery module and a battery control unit and a high-voltage unit arranged in the box body; the box body comprises an outer frame of the box body, an inner frame of the box body, a plurality of motion units, and an upper enclosure of the box body frame; the motion unit is composed of a motion base and a motion mechanism, one side of the motion mechanism is a bottom ball, and the other side is a bracket; the bottom ball is movably arranged in a groove matching the bottom ball in the motion base; a plurality of the motion bases in the motion unit are arranged around the inner frame of the box body close to one side of the outer frame of the box body; a coil and a high-voltage wire are arranged in the motion base, and a permanent magnet is arranged in the bottom ball; the cavity space formed by the inner frame of the box body, the outer frame of the box body and the upper enclosure of the box body frame is used to accommodate the motion mechanism in the motion unit for movement;

[0033] The battery control unit is used for:

[0034] Receive the predicted collision position and predicted collision energy of the whole vehicle sent by the whole vehicle controller; wherein the predicted collision position of the whole vehicle is predicted by the whole vehicle controller according to the received identification data before the electric vehicle collides; the identification data is collected by the identification system arranged on the body of the electric vehicle; the predicted collision energy of the whole vehicle is predicted by the whole vehicle controller according to the relative speed between the electric vehicle and the object being collided and the model of the electric vehicle;

[0035] According to the predicted collision position of the whole vehicle and the predicted collision energy of the whole vehicle, the predicted collision position of the box on the outer frame of the box and the predicted collision energy of the box borne by the outer frame of the box are predicted; wherein the battery module, the battery control unit and the high-voltage unit in the box constitute a power battery;

[0036] According to the predicted collision position of the box and the predicted collision energy of the box, the first area to be collided including the predicted collision position of the box is determined in the outer frame of the box, so that the power unit located in the second area to be collided in the inner frame of the box is determined as the first power unit; wherein the first area to be collided and the second area to be collided are orthographic projections of each other on the side of the box;

[0037] Based on the predicted collision position of the box and the predicted collision energy of the box, determining the first current required by the coil in the moving base of each of the first power units, so as to send the first current required by each of the coils to the high-voltage wires in the first power units respectively corresponding to the first power units;

[0038] The high-voltage wire in the first power unit is used to provide current to the coil according to the first current so that the coil generates magnetic force, and according to the strongest magnetic point in the coil, drives the permanent magnet in the first power unit to drive the bottom ball to move toward the strongest magnetic point to change the orientation of the bracket in the first power unit so that the orientation of the bracket in the first power unit is the direction of the predicted collision position of the box in the first collision area.

[0039] In combination with the second aspect, the embodiment of the present application provides a first possible implementation of the second aspect, wherein the battery control unit is further used to:

[0040] When the electric vehicle collides, receiving the actual collision position and actual collision energy of the whole vehicle sent by a first collision sensor arranged on the body of the electric vehicle;

[0041] Based on the actual collision position of the whole vehicle and the actual collision energy of the whole vehicle, predict the actual collision position of the box body decomposed on the outer frame of the box body and the actual collision energy of the box body borne by the outer frame of the box body;

[0042] According to the actual collision position of the box and the actual collision energy of the box, the first collision area including the predicted collision position of the box is determined in the outer frame of the box, so as to determine the power unit located in the second collision area in the inner frame of the box as the second power unit; wherein the first collision area and the second collision area are orthographic projections of each other on the side of the box;

[0043] Based on the actual collision position of the box and the actual collision energy of the box, determining the second current required by the coil in the moving base of each second power unit, so as to send the second current to the high-voltage line in the second power unit respectively corresponding to the second power unit;

[0044] The high-voltage wire in the second power unit is used to provide current to the coil according to the second current so that the coil generates magnetic force, and according to the strongest magnetic point in the coil, drives the permanent magnet in the second power unit to drive the bottom ball to move toward the strongest magnetic point, so as to adjust the orientation of the bracket in the second power unit, so that the orientation of the bracket in the second power unit is adjusted to the direction of the actual collision position of the box in the first collision area.

[0045] The embodiment of the present application provides a collision adaptive method and system for a power battery, wherein the battery module, battery management system and high-voltage unit to be protected are arranged in a box, and a plurality of motion bases in the motion unit are arranged around the inner frame of the box near the outer frame of the box, and the bottom ball on the motion mechanism of the motion unit is movably arranged in the motion base. The motion base is provided with a coil and a high-voltage wire, and the bottom ball is provided with a permanent magnet. Before the power vehicle sends a collision, it first predicts the predicted collision position of the box body and the predicted collision energy of the box body of the outer frame of the box body, then determines a first area to be collided including the predicted collision position of the box body in the outer frame of the box body, and determines the power unit located in the second area to be collided in the inner frame of the box body as the first power unit; wherein the first area to be collided and the second area to be collided are positive projections of each other on the side of the box body; based on the predicted collision position of the box body and the predicted collision energy of the box body, the first current required by the coil in the moving base of each first power unit is determined, so as to send the first current to the high-voltage line in the first power unit; the high-voltage line in the first power unit provides current to the coil according to the first current, so that the coil generates magnetic force, and according to the strongest magnetic point in the coil, the permanent magnet in the first power unit is driven to drive the bottom ball to move toward the strongest magnetic point, so as to change the orientation of the bracket in the first power unit. In this way, when the box collides, since the orientation of the bracket in the first power unit is the direction of the predicted collision position of the box, the actual collision energy received by the actual collision position of the box can be dispersed to the entire second area to be collided on the inner frame of the box through the bracket in the first power unit, thereby reducing the actual collision energy received by the actual collision position on the inner frame of the box (the actual collision position is generally a position in the second area to be collided), which is beneficial to reducing the damage to the actual collision position on the inner frame of the box, thereby protecting the safety of the power battery (including battery module, battery management system and high-voltage unit) in the inner frame of the box, thereby achieving the purpose of safety protection of the power battery.

[0046] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0048] Figure 1 A schematic diagram of the structure of a collision adaptive system of a power battery provided in an embodiment of the present application is shown;

[0049] Figure 2 A schematic diagram of the structure of a box provided in an embodiment of the present application is shown;

[0050] Figure 3 A schematic diagram of a single power unit provided in an embodiment of the present application is shown;

[0051] Figure 4 A schematic diagram showing the internal structure of a power unit provided in an embodiment of the present application;

[0052] Figure 5 A schematic diagram of changing the orientation of a bracket in the first power unit provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0053] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0054] Considering that once the power battery explodes or catches fire, the safety of life and property of the passengers in the car will be seriously threatened. Therefore, when an electric car encounters a collision, the protection and safety of the power battery is very important. Based on this, the embodiment of the present application provides a collision adaptive method and system for a power battery, which is described below through an embodiment.

[0055] To facilitate understanding of this embodiment, a collision adaptive method for a power battery disclosed in an embodiment of this application is first described in detail. The method is applied to a collision adaptive system for a power battery; Figure 1 As shown, the system includes: a top cover 500, a box body 100 matching the top cover 500, a battery module 200 and a battery control unit 300 and a high voltage unit 400 arranged in the box body 100. Figure 2 As shown, the box 100 includes an outer box frame 110, an inner box frame 120, a plurality of motion units 140, and a box frame upper perimeter 130. Figure 3 and Figure 4As shown, the motion unit 140 is composed of a motion base 141 and a motion mechanism 142. One side of the motion mechanism 142 is a bottom ball 142-1, and the other side is a bracket 142-2. The bottom ball 142-1 is movably arranged in a groove in the motion base 141 that matches the bottom ball 142-1. Figure 2 As shown, a plurality of motion bases 141 in the motion unit 140 are arranged around the inner frame 120 near the outer frame 110. The motion base 141 is provided with a coil and a high-voltage wire, and a permanent magnet is provided in the bottom ball 142-1; the cavity space formed by the inner frame 120, the outer frame 110 and the upper periphery 130 of the box frame is used to accommodate the motion mechanism 142 in the motion unit 140 for motion.

[0056] The method comprises the following steps S101-S105:

[0057] S101: The battery control unit receives the predicted collision position and predicted collision energy of the whole vehicle sent by the whole vehicle controller; wherein the predicted collision position of the whole vehicle is predicted by the whole vehicle controller according to the received identification data before the electric vehicle collides; the identification data is collected by the identification system arranged on the body of the electric vehicle; the predicted collision energy of the whole vehicle is predicted by the whole vehicle controller according to the relative speed between the electric vehicle and the object being collided and the model of the electric vehicle.

[0058] In this embodiment, an identification system is installed on the body of the electric vehicle, and the identification system is used to collect identification data and send the identification data to the vehicle controller. In a possible implementation, the identification system is a radar, and the identification data is radar data; or the identification system is a visual recognition system, and the identification data is image data or video data.

[0059] After receiving the identification data, the vehicle controller predicts the predicted collision position of the vehicle according to the identification data before the electric vehicle collides, and predicts the predicted collision energy of the vehicle according to the relative speed between the electric vehicle and the object being collided and the model of the electric vehicle. The predicted collision energy of the vehicle refers to the force of the collision suffered by the vehicle. The predicted predicted collision position of the vehicle and the predicted collision energy of the vehicle are then sent to the battery control unit 300.

[0060] S102: The battery control unit predicts the predicted collision position of the box on the outer frame of the box and the predicted collision energy of the box borne by the outer frame of the box according to the predicted collision position and the predicted collision energy of the whole vehicle; wherein the battery module, the battery control unit and the high-voltage unit in the box constitute a power battery.

[0061] In this embodiment, the power battery to be protected specifically includes a battery module 200 , a battery control unit 300 and a high-voltage unit 400 .

[0062] When the electric vehicle is hit, the power battery will also be hit. In this embodiment, the predicted collision position of the box on the outer frame 110 and the predicted collision energy of the box 110 are predicted based on the predicted collision position and the predicted collision energy of the whole vehicle. The predicted collision energy of the box refers to the force of the collision received by the outer frame 110.

[0063] S103: The battery control unit determines a first area to be collided that includes the predicted collision position of the box body in the outer frame of the box body according to the predicted collision position of the box body and the predicted collision energy of the box body, so as to determine the power unit located in the second area to be collided in the inner frame of the box body as the first power unit; wherein the first area to be collided and the second area to be collided are orthographic projections of each other on the side surface of the box body.

[0064] In this embodiment, according to the predicted collision position of the box and the predicted collision energy of the box, a first area to be collided including the predicted collision position of the box is determined in the outer frame 110 of the box. That is, the first area to be collided is located on the side of the outer frame 110 of the box. The second area to be collided is determined according to the first area to be collided. The first area to be collided and the second area to be collided are mutually orthographic projections on the side of the box, which means that the first area to be collided and the second area to be collided are parallel and equal in size. If the side of the outer frame 110 of the box is overlapped with the side of the inner frame 120 of the box, then the first area to be collided and the second area to be collided are overlapped.

[0065] S104: The battery control unit determines the first current required by the coil in the moving base in each first power unit based on the predicted collision position and the predicted collision energy of the box, so as to send the first current required by each coil to the high-voltage line in the corresponding first power unit.

[0066] Exemplarily, after determining the first current required by the coil in the moving base in the first power unit (eg, a1), the first current is sent to the high-voltage line in the moving base in the first power unit (a1).

[0067] S105: The high-voltage wire in the first power unit provides current to the coil according to the first current, so that the coil generates magnetic force, and according to the strongest magnetic point in the coil, drives the permanent magnet in the first power unit to drive the bottom ball to move toward the strongest magnetic point, so as to change the orientation of the bracket in the first power unit, so that the orientation of the bracket in the first power unit is the direction of the predicted collision position of the box in the first collision area.

[0068] Exemplarily, the high-voltage wire in the moving base of the first power unit (a1) provides current to the coil in the moving base of the first power unit (a1) according to the first current. After receiving the current, the coil generates magnetic force. According to the strongest magnetic point in the coil, the permanent magnet in the bottom ball of the first power unit (a1) is driven to drive the bottom ball to move toward the strongest magnetic point, thereby changing the direction of the bracket in the first power unit (a1). Figure 5 As shown, by adjusting the orientation of the bracket 142-2 in each first power unit in the second area to be collided to point in the direction of the predicted collision position of the box on the outer frame of the box, when a collision occurs, the actual collision energy received by the actual collision position on the inner frame of the box can be dispersed through the first power unit.

[0069] In a possible implementation, after executing step S105, the method may also be performed according to the following steps:

[0070] S106: When the electric vehicle collides, the battery control unit receives the actual collision position and actual collision energy of the entire vehicle sent by a first collision sensor disposed on the body of the electric vehicle.

[0071] In this embodiment, the first collision sensor is installed on the electric vehicle. The first collision sensor is used to collect the actual collision position and actual collision energy of the entire vehicle when the electric vehicle collides, and then send the collected actual collision position and actual collision energy of the entire vehicle to the battery control unit.

[0072] S107: The battery control unit predicts the actual collision position of the box body decomposed on the outer frame of the box body and the actual collision energy of the box body borne by the outer frame of the box body based on the actual collision position of the whole vehicle and the actual collision energy of the whole vehicle.

[0073] S108: The battery control unit determines a first collision area including a predicted collision position of the box in the outer frame of the box according to the actual collision position of the box and the actual collision energy of the box, so as to determine the power unit located in the second collision area in the inner frame of the box as the second power unit; wherein the first collision area and the second collision area are orthographic projections of each other on the side of the box.

[0074] In this embodiment, the first collision area and the first area to be collided have a certain degree of overlap, and the second collision area and the second area to be collided have a certain degree of overlap. The first power unit and the second power unit have a certain degree of overlap.

[0075] S109: The battery control unit determines the second current required by the coil in the moving base in each second power unit based on the actual collision position and the actual collision energy of the box, so as to send the second current to the high-voltage line in each corresponding second power unit.

[0076] S1010: The high-voltage wire in the second power unit provides current to the coil according to the second current, so that the coil generates magnetic force, and according to the strongest magnetic point in the coil, drives the permanent magnet in the second power unit to drive the bottom ball to move toward the strongest magnetic point, so as to adjust the orientation of the bracket in the second power unit, so that the orientation of the bracket in the second power unit is adjusted to the direction of the actual collision position of the box in the first collision area.

[0077] In this embodiment, when the electric vehicle is about to collide, the orientation of the bracket in the first power unit in the second area to be collided on the box inner frame 120 is adjusted in advance, and then when the electric vehicle collides, the second area to be collided is corrected to obtain the second collision area, and the first power unit is corrected to obtain the second power unit. By further adjusting the orientation of the bracket in the second power unit in the second collision area on the box inner frame 120, the orientation of the bracket in the second power unit can be made more accurate, and the collision of the box inner frame 120 can be better resisted.

[0078] In a possible implementation, before executing step S101, the initial orientation of the bracket in the power unit may be pre-determined by the following steps S201-S205:

[0079] S201: The battery control unit determines a target vehicle historical collision position and a target vehicle historical collision energy having the highest number of collisions from the vehicle historical collision positions and vehicle historical collision energies of the electric vehicle in a historical time period.

[0080] S202: The battery control unit determines, on the outer frame of the box body, a historical box body collision position and a historical box body collision energy borne by the outer frame of the box body according to the historical collision position of the target vehicle and the historical collision energy of the target vehicle.

[0081] S203: The battery control unit determines a first historical collision area including the historical box collision position in the box outer frame according to the historical box collision position and the historical box collision energy, so as to determine the power unit located in the second historical collision area in the box inner frame as the third power unit; wherein the first historical collision area and the second historical collision area are orthographic projections of each other on the side of the box.

[0082] S204: The battery control unit determines the third current required by the coil in the moving base in each third power unit based on the historical box collision position and the historical box collision energy, so as to send the third current required by each coil to the high-voltage line in the corresponding third power unit.

[0083] S205: The high-voltage line in the third power unit provides current to the coil according to the third current, so that the coil generates magnetic force, and according to the strongest magnetic point in the coil, drives the permanent magnet in the third power unit to drive the bottom ball to move toward the strongest magnetic point, so as to change the orientation of the bracket in the third power unit, so that the orientation of the bracket in the third power unit is the direction of the historical box collision position in the first historical collision area, and the changed orientation of the bracket in each third power unit is used as the initial orientation of the bracket in each third power unit.

[0084] In this embodiment, based on the historical collision position of the target vehicle with the highest number of collisions in the historical time period and the historical collision energy of the target vehicle, the historical box collision position and historical box collision energy with the highest number of collisions on the outer frame of the box are derived, and the motion unit determines the initial orientation of the bracket and maintains the initial position based on this situation, ensuring that when a collision occurs, the power unit is likely to run the minimum stroke, respond fastest, and quickly resist the impact force.

[0085] In a possible implementation, a damping structure or energy-absorbing material is further provided inside the bottom ball; the damping structure is used to buffer the collision energy of the inner frame received by the inner frame; the energy-absorbing material is used to absorb the collision energy of the inner frame received by the inner frame.

[0086] In this embodiment, the collision energy is buffered by energy-absorbing materials or damping structures, thereby weakening the energy (force) transmitted to the inner frame 120 of the box body.

[0087] In a possible implementation, a target number of reinforcing ribs are arranged around the inner frame of the box, one end of the reinforcing rib is against the inner side of the outer frame of the box, and the other end is arranged on the outer side of the inner frame of the box.

[0088] like Figure 2 As shown, a reinforcing rib is provided around each of the four sides of the inner frame of the box. In this embodiment, by providing a target number of reinforcing ribs around the four sides of the inner frame of the box, it is beneficial to enhance the resistance of the inner frame of the box and the outer frame of the box to collision energy.

[0089] In a possible implementation, a plurality of motion units are arranged at the bottom of the inner frame of the box near the outer frame of the box; a second collision sensor is arranged at the bottom of the electric vehicle. In this embodiment, the following methods S301-S304 can also be used to protect the bottom of the vehicle from collision:

[0090] S301: When the battery control unit receives the actual collision position and actual collision energy of the vehicle bottom sent by the second collision sensor, it predicts the box bottom collision position and box bottom collision energy at the bottom of the box outer frame according to the actual collision position and actual collision energy of the vehicle bottom.

[0091] In this embodiment, the second collision sensor is used to collect the actual collision position and the actual collision energy of the bottom of the vehicle, and then send the actual collision position and the actual collision energy of the bottom of the vehicle to the battery control unit. The battery control unit predicts the collision position and the collision energy of the bottom of the box body at the bottom of the outer frame of the box body according to the actual collision position and the actual collision energy of the bottom of the vehicle.

[0092] S302: The battery control unit determines a first box bottom collision area including the box bottom collision position at the bottom of the box outer frame according to the box bottom collision position and the box bottom collision energy, and determines a power unit located in the second box bottom collision area at the bottom of the box inner frame as the fourth power unit; the first box bottom collision area and the second box bottom collision area are orthographic projections of each other on the side of the box.

[0093] In this embodiment, the first box bottom collision area is located at the bottom of the box outer frame, and the second box bottom collision area is located at the bottom of the box inner frame. The first box bottom collision area and the first box bottom collision area are parallel and have the same size. When the bottom of the box outer frame and the bottom of the box inner frame overlap, the first box bottom collision area and the first box bottom collision area overlap.

[0094] S303: The battery control unit determines the fourth current required by the coil in the moving base in each fourth power unit based on the collision position and the collision energy of the bottom of the box, so as to send each fourth current to the high-voltage line in the corresponding fourth power unit.

[0095] S304: The high-voltage wire in the fourth power unit provides current to the coil according to the fourth current, so that the coil generates magnetic force, and according to the strongest magnetic point in the coil, drives the permanent magnet in the fourth power unit to drive the bottom ball to move toward the strongest magnetic point, so as to change the orientation of the bracket in the fourth power unit, so that the orientation of the bracket in the fourth power unit is the direction of the collision position of the bottom of the box in the collision area of ​​the bottom of the first box.

[0096] In this way, the collision of the protrusions on the bottom of the vehicle to the bottom of the box body can be dispersed by the fourth power unit.

[0097] In a possible implementation manner, the internal structure of the bracket in the motion mechanism is any one of the following structures: a solid structure, a hollow structure, and a hollow multi-cavity structure.

[0098] In a possible implementation, the interior of the bottom ball may also be filled with a non-Newtonian fluid to meet the requirements of light weight, high strength, and impact resistance.

[0099] Based on the same technical concept, the present application also provides a collision adaptive system for a power battery, the system comprising: a top cover, a box body matching the top cover, a battery module and a battery control unit and a high-voltage unit arranged in the box body; the box body comprises an outer frame of the box body, an inner frame of the box body, a plurality of motion units, and an upper enclosure of the box body frame; the motion unit is composed of a motion base and a motion mechanism, one side of the motion mechanism is a bottom ball, and the other side is a bracket; the bottom ball is movably arranged in a groove matching the bottom ball in the motion base; a plurality of the motion bases in the motion unit are arranged around the inner frame of the box body close to one side of the outer frame of the box body; a coil and a high-voltage wire are arranged in the motion base, and a permanent magnet is arranged in the bottom ball; the cavity space formed by the inner frame of the box body, the outer frame of the box body and the upper enclosure of the box body frame is used to accommodate the motion mechanism in the motion unit for movement;

[0100] The battery control unit is used for:

[0101] Receive the predicted collision position and predicted collision energy of the whole vehicle sent by the whole vehicle controller; wherein the predicted collision position of the whole vehicle is predicted by the whole vehicle controller according to the received identification data before the electric vehicle collides; the identification data is collected by the identification system arranged on the body of the electric vehicle; the predicted collision energy of the whole vehicle is predicted by the whole vehicle controller according to the relative speed between the electric vehicle and the object being collided and the model of the electric vehicle;

[0102] According to the predicted collision position of the whole vehicle and the predicted collision energy of the whole vehicle, the predicted collision position of the box on the outer frame of the box and the predicted collision energy of the box borne by the outer frame of the box are predicted; wherein the battery module, the battery control unit and the high-voltage unit in the box constitute a power battery;

[0103] According to the predicted collision position of the box and the predicted collision energy of the box, the first area to be collided including the predicted collision position of the box is determined in the outer frame of the box, so that the power unit located in the second area to be collided in the inner frame of the box is determined as the first power unit; wherein the first area to be collided and the second area to be collided are orthographic projections of each other on the side of the box;

[0104] Based on the predicted collision position of the box and the predicted collision energy of the box, determining the first current required by the coil in the moving base of each of the first power units, so as to send the first current required by each of the coils to the high-voltage wires in the first power units respectively corresponding to the first power units;

[0105] The high-voltage wire in the first power unit is used to provide current to the coil according to the first current so that the coil generates magnetic force, and according to the strongest magnetic point in the coil, drives the permanent magnet in the first power unit to drive the bottom ball to move toward the strongest magnetic point to change the orientation of the bracket in the first power unit so that the orientation of the bracket in the first power unit is the direction of the predicted collision position of the box in the first collision area.

[0106] Optionally, the battery control unit is further used for:

[0107] When the electric vehicle collides, receiving the actual collision position and actual collision energy of the whole vehicle sent by a first collision sensor arranged on the body of the electric vehicle;

[0108] Based on the actual collision position of the whole vehicle and the actual collision energy of the whole vehicle, predict the actual collision position of the box body decomposed on the outer frame of the box body and the actual collision energy of the box body borne by the outer frame of the box body;

[0109] According to the actual collision position of the box and the actual collision energy of the box, the first collision area including the predicted collision position of the box is determined in the outer frame of the box, so as to determine the power unit located in the second collision area in the inner frame of the box as the second power unit; wherein the first collision area and the second collision area are orthographic projections of each other on the side of the box;

[0110] Based on the actual collision position of the box and the actual collision energy of the box, determining the second current required by the coil in the moving base of each second power unit, so as to send the second current to the high-voltage line in the second power unit respectively corresponding to the second power unit;

[0111] The high-voltage wire in the second power unit is used to provide current to the coil according to the second current so that the coil generates magnetic force, and according to the strongest magnetic point in the coil, drives the permanent magnet in the second power unit to drive the bottom ball to move toward the strongest magnetic point, so as to adjust the orientation of the bracket in the second power unit, so that the orientation of the bracket in the second power unit is adjusted to the direction of the actual collision position of the box in the first collision area.

[0112] Optionally, the battery control unit is further used for:

[0113] Determine the target vehicle historical collision position and target vehicle historical collision energy with the highest number of collisions from the vehicle historical collision positions and vehicle historical collision energies of the electric vehicle in the historical time period;

[0114] According to the target vehicle historical collision position and the target vehicle historical collision energy, determining the historical box collision position and the historical box collision energy borne by the box outer frame on the box outer frame;

[0115] According to the historical box collision position and the historical box collision energy, the first historical collision area including the historical box collision position is determined in the box outer frame, so as to determine the power unit located in the second historical collision area in the box inner frame as the third power unit; wherein the first historical collision area and the second historical collision area are orthographic projections of each other on the side of the box;

[0116] Based on the historical box collision position and the historical box collision energy, determine the third current required by the coil in the moving base of each of the third power units, so as to send the third current required by each of the coils to the high-voltage line in the corresponding third power unit;

[0117] The high-voltage line in the third power unit is used to provide current to the coil according to the third current so that the coil generates magnetic force, and according to the strongest magnetic point in the coil, drives the permanent magnet in the third power unit to drive the bottom ball to move toward the strongest magnetic point to change the orientation of the bracket in the third power unit, so that the orientation of the bracket in the third power unit is the direction of the historical box collision position in the first historical collision area, and the changed orientation of the bracket in each third power unit is used as the initial orientation of the bracket in each third power unit.

[0118] Optionally, a damping structure or energy-absorbing material is further provided inside the bottom ball; the damping structure is used to buffer the collision energy of the inner frame received by the inner frame; the energy-absorbing material is used to absorb the collision energy of the inner frame received by the inner frame.

[0119] Optionally, a target number of reinforcing ribs are arranged around the inner frame of the box body, one end of the reinforcing rib is against the inner side of the outer frame of the box body, and the other end is arranged on the outer side of the inner frame of the box body.

[0120] Optionally, a plurality of the motion units are arranged at the bottom of the inner frame of the box body close to the outer frame of the box body; a second collision sensor is arranged at the bottom of the electric car;

[0121] The battery control unit is also used for:

[0122] When receiving the actual collision position of the vehicle bottom and the actual collision energy of the vehicle bottom sent by the second collision sensor, predicting the collision position of the bottom of the box body and the collision energy of the bottom of the box body at the bottom of the box body outer frame according to the actual collision position of the vehicle bottom and the actual collision energy of the vehicle bottom;

[0123] According to the collision position of the bottom of the box and the collision energy of the bottom of the box, a first box bottom collision area including the box bottom collision position is determined at the bottom of the box outer frame, and the power unit located in the second box bottom collision area at the bottom of the box inner frame is determined as a fourth power unit; the first box bottom collision area and the second box bottom collision area are orthographic projections of each other on the side of the box;

[0124] Based on the collision position of the bottom of the box and the collision energy of the bottom of the box, determining the fourth current required by the coil in the moving base of each of the fourth power units, so as to send each of the fourth currents to the high-voltage wires in the corresponding fourth power units;

[0125] The high-voltage line in the fourth power unit is used to provide current to the coil according to the fourth current so that the coil generates magnetic force, and according to the strongest magnetic point in the coil, drives the permanent magnet in the fourth power unit to drive the bottom ball to move toward the strongest magnetic point to change the orientation of the bracket in the fourth power unit so that the orientation of the bracket in the fourth power unit is the direction of the bottom collision position of the box in the bottom collision area of ​​the first box.

[0126] Optionally, the internal structure of the bracket in the motion mechanism is any one of the following structures: a solid structure, a hollow structure, and a hollow multi-cavity structure.

[0127] Optionally, the identification system is a radar, and the identification data is radar data;

[0128] Alternatively, the recognition system is a visual recognition system, and the recognition data is image data or video data.

[0129] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0130] In the several embodiments provided in the present application, it should be understood that the disclosed systems and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0131] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0132] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0133] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a non-volatile computer-readable storage medium that is executable by a processor. Based on this understanding, the technical solution of the present application can essentially be embodied in the form of a software product, or in other words, the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0134] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed in the present application, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A collision adaptive method for a power battery, characterized in that: The method is applied to a collision adaptive system of a power battery; the system comprises: a top cover, a box body matching the top cover, a battery module and a battery control unit arranged in the box body, and a high-voltage unit; the box body comprises an outer frame of the box body, an inner frame of the box body, a plurality of motion units, and an upper enclosure of the box body frame; the motion unit is composed of a motion base and a motion mechanism, one side of the motion mechanism is a bottom ball, and the other side is a bracket; the bottom ball is movably arranged in a groove matching the bottom ball in the motion base; a plurality of motion bases in the motion unit are arranged around the inner frame of the box body close to one side of the outer frame of the box body; a coil and a high-voltage wire are arranged in the motion base, and a permanent magnet is arranged in the bottom ball; the cavity space formed by the inner frame of the box body, the outer frame of the box body and the upper enclosure of the box body frame is used to accommodate the motion mechanism in the motion unit for movement; the method comprises: The battery control unit receives the predicted collision position and predicted collision energy of the whole vehicle sent by the whole vehicle controller; wherein the predicted collision position of the whole vehicle is predicted by the whole vehicle controller according to the received identification data before the electric vehicle collides; the identification data is collected by the identification system arranged on the body of the electric vehicle; the predicted collision energy of the whole vehicle is predicted by the whole vehicle controller according to the relative speed between the electric vehicle and the object being collided and the model of the electric vehicle; The battery control unit predicts the predicted collision position of the box on the outer frame of the box and the predicted collision energy of the box borne by the outer frame of the box according to the predicted collision position of the whole vehicle and the predicted collision energy of the whole vehicle; wherein the battery module in the box, the battery control unit and the high-voltage unit constitute a power battery; The battery control unit determines the first area to be collided including the predicted collision position of the box body in the outer frame of the box body according to the predicted collision position of the box body and the predicted collision energy of the box body, so as to determine the power unit located in the second area to be collided in the inner frame of the box body as the first power unit; wherein the first area to be collided and the second area to be collided are orthographic projections of each other on the side surface of the box body; The battery control unit determines the first current required by the coil in the moving base of each of the first power units based on the predicted collision position of the box and the predicted collision energy of the box, so as to send the first current required by each of the coils to the high-voltage wires in the first power units respectively corresponding to the first power units; The high-voltage wire in the first power unit provides current to the coil according to the first current so that the coil generates magnetic force, and according to the strongest magnetic point in the coil, drives the permanent magnet in the first power unit to drive the bottom ball to move toward the strongest magnetic point to change the orientation of the bracket in the first power unit so that the orientation of the bracket in the first power unit is the direction of the predicted collision position of the box in the first collision area.

2. The method according to claim 1, characterized in that: After the method further comprises: according to the strongest magnetic point in the coil, driving the permanent magnet in the first power unit to drive the bottom ball to move toward the strongest magnetic point to change the orientation of the bracket in the first power unit so that the orientation of the bracket in the first power unit is the direction of the predicted collision position of the box in the first collision area. When the electric vehicle collides, the battery control unit receives the actual collision position and actual collision energy of the whole vehicle sent by the first collision sensor arranged on the body of the electric vehicle; The battery control unit predicts the actual collision position of the box body decomposed on the box body outer frame and the actual collision energy of the box body borne by the box body outer frame based on the actual collision position of the whole vehicle and the actual collision energy of the whole vehicle; The battery control unit determines the first collision area including the predicted collision position of the box in the outer frame of the box according to the actual collision position of the box and the actual collision energy of the box, so as to determine the power unit located in the second collision area in the inner frame of the box as the second power unit; wherein the first collision area and the second collision area are orthographic projections of each other on the side of the box; The battery control unit determines the second current required by the coil in the moving base of each second power unit based on the actual collision position of the box and the actual collision energy of the box, so as to send the second current to the high-voltage line in the second power unit respectively corresponding to the second power unit; The high-voltage wire in the second power unit provides current to the coil according to the second current, so that the coil generates magnetic force, and according to the strongest magnetic point in the coil, drives the permanent magnet in the second power unit to drive the bottom ball to move toward the strongest magnetic point, so as to adjust the orientation of the bracket in the second power unit, so that the orientation of the bracket in the second power unit is adjusted to the direction of the actual collision position of the box in the first collision area.

3. The method according to claim 1, characterized in that: Before the battery control unit receives the vehicle predicted collision position and vehicle predicted collision energy sent by the vehicle controller, the method further includes: The battery control unit determines the target vehicle historical collision position and target vehicle historical collision energy with the highest number of collisions from the vehicle historical collision positions and vehicle historical collision energies of the electric vehicle in the historical time period; The battery control unit determines the historical box collision position and the historical box collision energy borne by the box outer frame on the box outer frame according to the target vehicle historical collision position and the target vehicle historical collision energy; The battery control unit determines the first historical collision area including the historical collision position of the box body in the outer frame of the box body according to the historical collision position of the box body and the historical collision energy of the box body, so as to determine the power unit located in the second historical collision area in the inner frame of the box body as the third power unit; wherein the first historical collision area and the second historical collision area are orthographic projections of each other on the side surface of the box body; The battery control unit determines the third current required by the coil in the moving base of each of the third power units based on the historical box collision position and the historical box collision energy, so as to send the third current required by each of the coils to the high-voltage line in the corresponding third power unit; The high-voltage wire in the third power unit provides current to the coil according to the third current so that the coil generates magnetic force, and according to the strongest magnetic point in the coil, drives the permanent magnet in the third power unit to drive the bottom ball to move toward the strongest magnetic point to change the orientation of the bracket in the third power unit, so that the orientation of the bracket in the third power unit is the direction of the historical box collision position in the first historical collision area, and the changed orientation of the bracket in each third power unit is used as the initial orientation of the bracket in each third power unit.

4. The method according to claim 1, characterized in that: A damping structure or energy-absorbing material is also provided inside the bottom ball; the damping structure is used to buffer the collision energy of the inner frame of the box received by the inner frame of the box; the energy-absorbing material is used to absorb the collision energy of the inner frame of the box received by the inner frame of the box.

5. The method according to claim 1, characterized in that: A target number of reinforcing ribs are arranged around the inner frame of the box, one end of the reinforcing rib is against the inner side of the outer frame of the box, and the other end is arranged on the outer side of the inner frame of the box.

6. The method according to claim 1, characterized in that: A plurality of the motion units are arranged at the bottom of the inner frame of the box close to the outer frame of the box; a second collision sensor is arranged at the bottom of the electric car; When the battery control unit receives the actual collision position and the actual collision energy of the vehicle bottom sent by the second collision sensor, it predicts the collision position and the collision energy of the box bottom of the box outer frame according to the actual collision position and the actual collision energy of the vehicle bottom; The battery control unit determines a first box bottom collision area including the box bottom collision position at the bottom of the box outer frame according to the box bottom collision position and the box bottom collision energy, and determines the power unit located in the second box bottom collision area at the bottom of the box inner frame as the fourth power unit; the first box bottom collision area and the second box bottom collision area are orthographic projections of each other on the side of the box; The battery control unit determines the fourth current required by the coil in the moving base of each of the fourth power units based on the collision position of the bottom of the box and the collision energy of the bottom of the box, so as to send each of the fourth currents to the high-voltage wires in the corresponding fourth power units; The high-voltage wire in the fourth power unit provides current to the coil according to the fourth current, so that the coil generates magnetic force, and according to the strongest magnetic point in the coil, drives the permanent magnet in the fourth power unit to drive the bottom ball to move toward the strongest magnetic point, so as to change the orientation of the bracket in the fourth power unit, so that the orientation of the bracket in the fourth power unit is the direction of the bottom collision position of the box in the bottom collision area of ​​the first box.

7. The method according to claim 1, characterized in that: The internal structure of the bracket in the motion mechanism is any one of the following structures: a solid structure, a hollow structure, and a hollow multi-cavity structure.

8. The method according to claim 1, characterized in that: The identification system is a radar, and the identification data is radar data; Alternatively, the recognition system is a visual recognition system, and the recognition data is image data or video data.

9. A collision adaptive system for a power battery, characterized in that: The system comprises: a top cover, a box body matching the top cover, a battery module and a battery control unit and a high-voltage unit arranged in the box body; the box body comprises an outer frame of the box body, an inner frame of the box body, a plurality of motion units, and an upper enclosure of the box body frame; the motion unit is composed of a motion base and a motion mechanism, one side of the motion mechanism is a bottom ball, and the other side is a bracket; the bottom ball is movably arranged in a groove matching the bottom ball in the motion base; a plurality of the motion bases in the motion unit are arranged around the inner frame of the box body close to one side of the outer frame of the box body; a coil and a high-voltage wire are arranged in the motion base, and a permanent magnet is arranged in the bottom ball; the cavity space formed by the inner frame of the box body, the outer frame of the box body and the upper enclosure of the box body frame is used to accommodate the motion mechanism in the motion unit for movement; The battery control unit is used for: Receive the predicted collision position and predicted collision energy of the whole vehicle sent by the whole vehicle controller; wherein the predicted collision position of the whole vehicle is predicted by the whole vehicle controller according to the received identification data before the electric vehicle collides; the identification data is collected by the identification system arranged on the body of the electric vehicle; the predicted collision energy of the whole vehicle is predicted by the whole vehicle controller according to the relative speed between the electric vehicle and the object being collided and the model of the electric vehicle; According to the predicted collision position of the whole vehicle and the predicted collision energy of the whole vehicle, the predicted collision position of the box on the outer frame of the box and the predicted collision energy of the box borne by the outer frame of the box are predicted; wherein the battery module, the battery control unit and the high-voltage unit in the box constitute a power battery; According to the predicted collision position of the box and the predicted collision energy of the box, the first area to be collided including the predicted collision position of the box is determined in the outer frame of the box, so that the power unit located in the second area to be collided in the inner frame of the box is determined as the first power unit; wherein the first area to be collided and the second area to be collided are orthographic projections of each other on the side of the box; Based on the predicted collision position of the box and the predicted collision energy of the box, determining the first current required by the coil in the moving base of each of the first power units, so as to send the first current required by each of the coils to the high-voltage wires in the first power units respectively corresponding to the first power units; The high-voltage wire in the first power unit is used to provide current to the coil according to the first current so that the coil generates magnetic force, and according to the strongest magnetic point in the coil, drives the permanent magnet in the first power unit to drive the bottom ball to move toward the strongest magnetic point to change the orientation of the bracket in the first power unit so that the orientation of the bracket in the first power unit is the direction of the predicted collision position of the box in the first collision area.

10. The method system according to claim 9, characterized in that: The battery control unit is also used for: When the electric vehicle collides, receiving the actual collision position and actual collision energy of the whole vehicle sent by a first collision sensor arranged on the body of the electric vehicle; Based on the actual collision position of the whole vehicle and the actual collision energy of the whole vehicle, predict the actual collision position of the box body decomposed on the outer frame of the box body and the actual collision energy of the box body borne by the outer frame of the box body; According to the actual collision position of the box and the actual collision energy of the box, the first collision area including the predicted collision position of the box is determined in the outer frame of the box, so as to determine the power unit located in the second collision area in the inner frame of the box as the second power unit; wherein the first collision area and the second collision area are orthographic projections of each other on the side of the box; Based on the actual collision position of the box and the actual collision energy of the box, determining the second current required by the coil in the moving base of each second power unit, so as to send the second current to the high-voltage line in the second power unit respectively corresponding to the second power unit; The high-voltage wire in the second power unit is used to provide current to the coil according to the second current so that the coil generates magnetic force, and according to the strongest magnetic point in the coil, drives the permanent magnet in the second power unit to drive the bottom ball to move toward the strongest magnetic point, so as to adjust the orientation of the bracket in the second power unit, so that the orientation of the bracket in the second power unit is adjusted to the direction of the actual collision position of the box in the first collision area.

Images