Battery pack and vehicle

Abstract

The invention relates to the technical field of batteries, and provides a battery pack and a vehicle. According to the battery pack provided by the invention, on one hand, the temperature of a battery module can be obtained through a movable sensor, and the temperature can be used for being compared with the temperature obtained by a fixed temperature sensor arranged on the battery module; whether the movable sensor and the fixed temperature sensor break down or not is verified, and the temperature sensors are correspondingly monitored while the energy storage temperature of the power battery is monitored. Besides, the sediment monitoring assembly is used for detecting the content of sediment and sending out a signal to assist in judging the service life of the cooling liquid, so that the water-cooling heat dissipation effect is assisted to be improved, and the monitoring of the water-cooling system is completed while the temperature is monitored.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to battery packs and vehicles. Background Art

[0002] Power batteries are the power source for tools, primarily those used in electric vehicles, electric trains, electric bicycles, and golf carts. They are a core component of new energy vehicles and a key component of future energy transformation.

[0003] The power battery consists of several battery modules, integrated within the battery compartment, providing the power source for new energy vehicles. When the battery stores energy, it generates significant heat, a parameter crucial to the performance and lifespan of the battery module. To ensure proper operation, effective heat dissipation and real-time temperature monitoring are essential.

[0004] In existing power battery designs, temperature monitoring is mostly achieved by installing temperature sensors on each battery module. However, temperature sensors have a certain failure rate. When the temperature sensor of a single battery module fails, there will be a certain deviation in the accuracy of its temperature measurement. The system is often not notified in time, causing the battery module to store energy at an inappropriate temperature, which affects the service life of the battery module.

[0005] In addition, liquid cooling is the most commonly used method for power battery heat dissipation. Liquid cooling mainly relies on a liquid pump to transport coolant, which circulates in the cooling pipes inside the water-cooled plate to dissipate heat. Its heat dissipation effect is crucial to the performance of the power battery. Most existing power battery monitoring devices use temperature data collection to monitor the stability of the power battery during energy storage, and lack an accurate monitoring method for the coolant status. Summary of the Invention

[0006] In view of this, the present application provides a battery pack and a vehicle, the purpose of which is to solve the above technical problems to a certain extent.

[0007] A first aspect of the present application provides a battery pack, comprising: Battery modules; a movable sensor configured to move along a predetermined trajectory outside the battery module to obtain a temperature at a position on the battery module corresponding to the predetermined trajectory; a liquid cooling pipe, the liquid cooling pipe being arranged on one side of the battery module and being used for circulating a cooling liquid; A sediment monitoring assembly, the sediment monitoring assembly comprising a sediment collector and a sediment detection sensor, the detection end of the sediment detection sensor being disposed in the liquid cooling tube, and the sediment collector being located in the liquid cooling tube; The predetermined trajectory is synthesized from at least one sub-trajectory, and the sediment detection sensor can move in the liquid cooling tube along a trajectory synthesized from at least one of the at least one sub-trajectory.

[0008] Based on the above technical solution, optionally, the battery module has a length direction and a width direction, the at least one sub-trajectory includes a linear motion trajectory moving along one of the length direction and the width direction, and the at least one sub-trajectory also includes a rotation trajectory rotating around an axis extending along the other of the length direction and the width direction; The sediment detection sensor moves in the liquid cooling tube along a trajectory synthesized by the linear motion trajectory.

[0009] Based on any of the above technical solutions, optionally, the battery module is provided with a plurality of monitoring openings communicating with the interior of the battery module, and the predetermined trajectory passes through the plurality of monitoring openings.

[0010] Based on any of the above technical solutions, optionally, the battery pack further includes a cover plate, and the cover plate is provided on the outside of the battery module to cover the multiple monitoring openings.

[0011] Based on any of the above technical solutions, optionally, the battery module has a length direction and a width direction, and the battery pack includes a sliding plate, the sliding plate is connected to the active sensor, and the sliding plate moves along one of the length direction and the width direction and extends along the other of the length direction and the width direction; The battery module also includes a transverse platform arranged on the sliding plate and a force-applying component arranged on the transverse platform, the transverse platform moves along the other of the length direction and the width direction, and the force-applying component is used to apply force to the sediment detection sensor so that the sediment detection sensor moves synchronously with the transverse platform.

[0012] Based on any of the above technical solutions, optionally, the sediment collector includes: A main body having a plurality of through holes formed therethrough; a plurality of screens, the plurality of screens being arranged in one-to-one correspondence with the plurality of through holes, and each of the screens covering a corresponding through hole; A plurality of fan plates are provided in one-to-one correspondence with the plurality of through holes, each of the fan plates is used to shield the corresponding through hole, the plurality of fan plates are connected as a whole, and the plurality of fan plates are configured to be rotatable so that each fan plate shields and opens the corresponding through hole.

[0013] Based on any of the above technical solutions, optionally, each of the fan plates is configured to open the corresponding through hole when the sediment collector moves, and to cover the corresponding through hole when the sediment collector stops moving.

[0014] Based on any of the above technical solutions, optionally, the sediment collector includes: main body; a plurality of wheel rods, wherein the wheel rods are hingedly connected to the main body; A plurality of reset components are provided, each of the reset components applies a force to the corresponding wheel rod away from the main body, so that the plurality of wheel rods are opened outward and abut against the inner side of the liquid cooling tube.

[0015] Based on any of the above technical solutions, optionally, each of the reset members is configured to pull the corresponding wheel rod when the sediment collector moves, so as to retract the corresponding wheel rod.

[0016] A second aspect of the present application provides a vehicle, comprising the battery pack as described above.

[0017] The battery pack provided by this application can, on the one hand, obtain the temperature of the battery module via an active sensor. This temperature can be compared with the temperature obtained by a fixed temperature sensor installed on the battery module to verify whether the active and fixed temperature sensors are faulty. This allows for simultaneous monitoring of the power battery energy storage temperature and the temperature sensor. Furthermore, a sediment monitoring component is used to detect sediment content and generate a signal to assist in determining the service life of the coolant, thereby helping to improve the effectiveness of water cooling and heat dissipation, allowing simultaneous monitoring of the water cooling system.

[0018] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of an exploded view of a battery pack provided according to an embodiment of the present application is shown.

[0020] Figure 2 A schematic diagram showing another exploded view of a battery pack provided according to an embodiment of the present application is shown.

[0021] Figure 3A schematic diagram of a three-dimensional diagram of a battery pack with part of its structure omitted according to an embodiment of the present application is shown.

[0022] Figure 4 A schematic diagram showing the structure related to the activity sensor of a battery pack provided according to an embodiment of the present application is shown.

[0023] Figure 5 A schematic diagram of the bottom plate related structure of a battery pack provided according to an embodiment of the present application is shown.

[0024] Figure 6 A schematic diagram of the liquid cooling tube plate related structure of the battery pack provided in accordance with an embodiment of the present application is shown.

[0025] Figure 7 A schematic diagram of a sediment monitoring sensor for a battery pack provided according to an embodiment of the present application is shown.

[0026] Figure 8 Another schematic diagram of a sediment monitoring sensor for a battery pack provided according to an embodiment of the present application is shown.

[0027] Figure 9 A schematic diagram of a sediment collector of a battery pack provided in an embodiment of the present application is shown in a liquid cooling tube.

[0028] Figure 10 A schematic diagram of a three-dimensional image of a sediment collector of a battery pack provided according to an embodiment of the present application is shown.

[0029] Figure 11 A schematic diagram of a three-dimensional diagram of a transverse shifting platform for a battery pack provided according to an embodiment of the present application is shown.

[0030] Figure 12 A schematic diagram showing another three-dimensional diagram of a sediment collector of a battery pack provided according to an embodiment of the present application is shown.

[0031] Figure 13 A schematic diagram showing a three-dimensional diagram of a partial structure of a sediment collector of a battery pack provided according to an embodiment of the present application.

[0032] Figure 14 A schematic diagram of a three-dimensional diagram of a battery pack provided according to an embodiment of the present application is shown.

[0033] Reference numerals: 1-battery compartment; 2-battery compartment cover; 3-water cooling plate; 4-liquid cooling pipe; 5-cover plate; 6-bottom plate; 7-mobility monitoring assembly; 701-electric guide rail; 702-auxiliary guide rail; 703-sliding plate; 704-articulated frame; 705-sensor frame; 706-sensor 1; 707-opening; 8-sediment monitoring assembly; 801-sediment collector; 802-screen; 803-wheel rod; 804-contact wheel; 805-first Sleeve; 806-rotating shaft; 807-magnetic part; 808-support spring; 809-electromagnet; 8010-sensor 2; 8011-storage tube; 8012-electric telescopic rod; 8013-fan plate; 9-motor; 10-screw; 11-transverse platform; 12-sleeve plate; 13-roller; 14-limiting part; 15-tooth plate; 16-spur gear; 17-second sleeve; 18-sleeve rod; 19-series tube; 20-guide plate. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solution of this application in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0035] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0037] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0038] According to the first aspect of the embodiment of the present application, a battery pack is provided. Figures 1 to 14 Describe the structure and working principle of the battery pack in detail.

[0039] According to the battery pack provided in the embodiment of the present application, the battery pack includes a battery module, an activity sensor, a liquid cooling tube and a sediment monitoring component.

[0040] In an embodiment, the movable sensor is configured to move along a predetermined trajectory outside the battery module to obtain the temperature of a position on the battery module corresponding to the predetermined trajectory. A liquid cooling pipe is provided on one side of the battery module, and a coolant is circulated in the liquid cooling pipe.

[0041] In an embodiment, the sediment monitoring assembly includes a sediment collector and a sediment detection sensor, the detection end of the sediment detection sensor is arranged in the liquid cooling tube, and the sediment collector is located in the liquid cooling tube.

[0042] In an embodiment, the predetermined trajectory is synthesized from at least one sub-trajectory, and the sediment detection sensor can move in the liquid cooling tube along a trajectory synthesized from at least one of the at least one sub-trajectory.

[0043] Thus, according to the battery pack provided by the embodiments of the present application, the battery pack can obtain the temperature of the battery module via an active sensor. This temperature can be compared with the temperature obtained by the fixed temperature sensor installed on the battery module to verify whether the active sensor and the fixed temperature sensor have failed. This allows for simultaneous monitoring of the power battery energy storage temperature and the temperature sensor. In addition, a sediment monitoring component is used to detect the sediment content and issue a signal to assist in determining the service life of the coolant, thereby helping to improve the effectiveness of water cooling and heat dissipation, completing the monitoring of the water cooling system simultaneously with temperature monitoring.

[0044] According to the battery pack provided in an embodiment of the present application, the battery module has a length direction and a width direction, at least one sub-trajectory includes a linear motion trajectory along one of the length direction and the width direction, and at least one sub-trajectory also includes a rotation trajectory about an axis extending along the other of the length direction and the width direction. In this embodiment, the sediment detection sensor moves within the liquid cooling tube along a trajectory synthesized from the linear motion trajectory.

[0045] According to the battery pack provided in the embodiment of the present application, a plurality of monitoring ports communicating with the interior of the battery module are provided on the battery module, and the predetermined trajectory passes through the plurality of monitoring ports.

[0046] According to the battery pack provided in the embodiment of the present application, the battery pack may further include a cover plate, which may be arranged on the outside of the battery module to cover a plurality of monitoring openings.

[0047] According to the battery pack provided in an embodiment of the present application, the battery module has a length direction and a width direction, and the battery pack includes a sliding plate, which is connected to the active sensor. The sliding plate moves along one of the length direction and the width direction, and extends along the other of the length direction and the width direction.

[0048] In an embodiment, the battery module also includes a transverse platform arranged on the sliding plate and a force-applying component arranged on the transverse platform. The transverse platform moves along the other of the length direction and the width direction. The force-applying component is used to apply force to the sediment detection sensor so that the sediment detection sensor moves synchronously with the transverse platform.

[0049] According to the battery pack provided in an embodiment of the present application, the sediment collector includes a main body, multiple screens, and multiple fan plates. In an embodiment, the main body may be formed with multiple through-holes extending therethrough. The multiple screens may be arranged in a one-to-one correspondence with the multiple through-holes, with each screen covering a corresponding through-hole.

[0050] In an embodiment, the aforementioned multiple fan plates can be arranged in one-to-one correspondence with the multiple through holes, each fan plate can be used to cover the corresponding through hole, the aforementioned multiple fan plates can be connected as one, and the aforementioned multiple fan plates are configured to be able to rotate so that each fan plate covers and opens the corresponding through hole.

[0051] According to the battery pack provided in the embodiment of the present application, each fan plate can be configured to open the corresponding through hole when the sediment collector moves, and to cover the corresponding through hole when the sediment collector stops moving.

[0052] According to the battery pack provided in an embodiment of the present application, the sediment collector may further include multiple wheel rods and multiple reset members. In one embodiment, the wheel rods are hinged to the main body, and each reset member applies a force away from the main body to the corresponding wheel rod, causing the multiple wheel rods to open outward and abut the inner side of the liquid cooling tube. According to the battery pack provided in an embodiment of the present application, each reset member is configured to pull the corresponding wheel rod when the sediment collector moves, thereby retracting the corresponding wheel rod.

[0053] Based on the above description, the following will further describe in detail an example of the structure of the battery pack with reference to the accompanying drawings.

[0054] According to the battery pack provided in the embodiment of the present application, the temperature data of the battery module is further measured by means of a temperature collection end that can move around the outside of the battery module, a collection end for sediment in the coolant, and a measurement end, and the temperature data is compared with the temperature sensor on the battery module to determine whether there is a fault, and to assist in determining the heat dissipation performance and service life of the coolant, thereby ensuring that the temperature of the battery module during energy storage does not deviate significantly and affect the performance and service life, and ensuring the heat dissipation effectiveness of the heat dissipation method, thereby improving the stability and service life of the power battery.

[0055] According to an embodiment of the present application, a battery pack includes a battery compartment 1, in which a number of battery modules are installed, and the battery modules are provided with temperature sensors for monitoring temperature according to the prior art. A frame is provided on the front outer edge of the battery compartment 1, and auxiliary components such as a liquid pump and an electrical management system are installed in the frame. A line interface is provided at the front end of the frame, the upper end of the battery compartment 1 is connected to a battery compartment cover 2 for encapsulating the battery modules, the bottom end of the battery compartment 1 is connected to a water-cooled plate 3, and a channel for placing a liquid cooling pipe 4 is provided in the water-cooled plate 3. The two ends of the liquid cooling pipe 4 extend into the frame and are connected to the liquid pump. The upper and lower sides of the battery compartment 1 are also connected to a cover plate 5 and a bottom plate 6, which wrap the battery compartment 1, the battery compartment cover 2 and the water-cooled plate 3 inside. A cavity is provided in the cover plate 5, and a mobile monitoring component 7 is provided in the cavity. The mobile monitoring component 7 is provided with a movable temperature monitoring end for fixed-point monitoring of the temperature of each battery module for comparison. The liquid cooling tube 4 is provided with a sediment monitoring component 8 for collecting sediment and monitoring the content.

[0056] According to an embodiment of the present application, the mobile monitoring assembly 7 includes an electric guide rail 701, which is mounted on one side of the cavity of the base plate 6, and a secondary guide rail 702 is mounted on the other side of the cavity of the base plate 6. The transmission components of the electric guide rail 701 and the secondary guide rail 702 are both connected to a sliding plate 703, and both ends of the sliding plate 703 are connected to an articulated frame 704. The free end of the articulated frame 704 is provided with a sensor frame 705. A sliding hole is provided on the top of the base plate 6 at the position corresponding to the sensor frame 705. The length of the sliding hole is consistent with the travel of the secondary guide rail 702 and the transmission part of the secondary guide rail 702, and the sensor frame 705 is mounted on the sliding hole.

[0057] In this embodiment, sensor 1 706, an active temperature sensor for acquiring temperature, is mounted on the free end of sensor bracket 705. The center of battery compartment cover 2 is raised, and openings 707 are provided on both sides of the raised wall corresponding to the battery module locations, connecting to battery compartment 1. A gap is left between the inner walls of cover plate 5 and battery compartment 1 to allow sensor bracket 705 to pass through.

[0058] In this embodiment, the motorized guide rail 701 activates and drives the transmission unit to move, thereby driving the sensor frame 705 to move along with the motorized guide rail 701. The speed of the sensor frame 705 is controlled by controlling the motor frequency, allowing sufficient time for sensor 1 706 to monitor the heat dissipated by the electrical module at that location when the sensor frame 705 passes through the opening 707. Specifically, the approximate heat range of the battery module during energy storage is obtained and compared with the temperature data set on the battery module. Within a certain tolerance, it is possible to determine whether the battery module's temperature sensor is faulty, thereby simultaneously monitoring the power battery energy storage temperature and the temperature sensor.

[0059] Furthermore, a separate sensor 706 is used to compare data with several temperature sensors. For example, the battery management system receives temperature data from a fixed temperature sensor on the battery module and from sensor 706 for comparison and determination. If sensor 706 is faulty, after multiple comparisons, if the deviation consistently exceeds a threshold, the fault is detected. The battery management system then prompts maintenance and disables sensor 706. This avoids the possibility of simultaneous failures when multiple temperature sensors are installed on the battery module to implement the comparison function, resulting in an inability to obtain stable and effective monitoring data. This in turn increases the probability of preventing fires.

[0060] According to an embodiment of the present application, the inner cavity of the bottom plate 6 is provided with a limiting member 14 for limiting the sliding position of the sliding plate 703 .

[0061] According to the embodiment of the present application, the sensor frame 705 is hinged to the articulated frame 704. A spur gear 16 is connected to the outer side of the sensor frame 705 at a position corresponding to the hinge center. A toothed plate 15 is connected to the front end of the sliding hole of the base plate 6, and the spur gear 16 and toothed plate 15 are located in corresponding positions. A second sleeve 17 is connected to one side of the articulated frame 704. A spring (not shown) is disposed within the second sleeve 17. A rod 18 is sleeved within the second sleeve 17. The free end of the rod 18 is connected to the sensor frame 705, and the ends of the spring within the second sleeve 17 are connected to the second sleeve 17 and the rod 18, respectively.

[0062] In the embodiment, when the sensor frame 705 moves to the front side along with the transmission part of the electric guide rail 701, the spur gear 16 corresponds to the tooth plate 15, and the sensor frame 705 engages during the sliding process and rotates around the hinge of the articulated frame 704, allowing the sensor 1 706 to tilt forward to correspond to the wires and other components at the front end of the frame to monitor the temperature of the components there.

[0063] In the embodiment, a signal is sent in time when sparks and high temperatures are caused by a short circuit in the line, thereby further reducing the occurrence of fire phenomena. In addition, the sensor 1 706 is compared with the data of temperature sensors on several battery modules during movement to ensure that there is no fault in the sensor 1 706, thereby improving the credibility of the data when monitoring the line temperature and further reducing the probability of fire phenomena. When the sensor frame 705 moves to the point where the spur gear 16 disengages from the tooth plate 15, the verticality of the sensor frame 705 is ensured by the support of the spring.

[0064] According to the embodiment of the present application, the front end of the cover plate 5 is provided with a cover plate, which covers both sides of the front end of the frame plate. The cover plate further shields the sensor 1 706, thereby reducing the impact of the external environment on the sensor 1 706.

[0065] According to the embodiment of the present application, the sediment monitoring assembly 8 includes a sediment collector 801. The two ends of the liquid cooling pipe 4 are located inside the two sections of the pipe outside the water cooling plate 3 and are connected to the series pipe 19. The sediment collector 801 is sleeved in the series pipe 19.

[0066] In the embodiment, the shape and surface dimensions of the sediment collector 801 are consistent with the inner cavity of the liquid cooling tube 4. A sieve hole is provided on the side of the sediment collector 801, and a screen 802 is connected to the sieve hole. A circular hole is provided in the middle of the sediment collector 801, and a rotating shaft 806 is rotatably connected thereto. In the embodiment, a magnetic component 807 is connected to one end of the rotating shaft 806 (i.e., it can be attracted by magnetic force). A chute is provided on the top of the sliding plate 703, and a traverse platform 11 is slidably connected therein. The traverse platform 11 is mounted on an electromagnet 809. When the electromagnet 809 is energized, the magnetic component 807 is attracted by magnetic force. In the embodiment, a motor 9 is mounted on one side of the sliding plate 703. A screw 10 is connected to the drive shaft of the motor 9, and the screw 10 is threadedly connected to the traverse platform 11.

[0067] In this embodiment, the top of the series tube 19 has a hole, into which a storage tube 8011 is connected. Storage tube 8011 also has a hole and is equipped with a second sensor 8010. Sensor 8010 is the detection end of a sediment detection sensor. Sediment sensors are conventional technology, but in this embodiment, a TSS sensor can be used. The connection between sensor 8010 and storage tube 8011 is sealed.

[0068] When the electromagnet 809 is energized, it generates a magnetic attraction on the magnetized part 807. Then, when the sliding plate 703 moves, it drives the sediment collector 801 to slide along the longitudinal pipeline of the liquid cooling tube 4. When the starting motor 9 drives the screw 10 to rotate, the transverse platform 11 slides transversely on the sliding plate 703, driving the sediment collector 801 to slide along the transverse pipeline of the liquid cooling tube 4. Through the setting of the program and the coordination of the positioning sensor, the sediment collector 801 can slide a complete circle in the pipeline of the liquid cooling tube 4 and reset to the initial position.

[0069] It should be noted that when there are multiple liquid cooling tubes 4, a series tube 19 connecting the two ends and a sediment monitoring component 8 are set on each of the liquid cooling tubes 4. When the transverse platform 11 moves longitudinally and transversely along the set program, it can drive several sediment monitoring components 8 to move respectively. After the sediment collector 801 slides a complete circle along the inside of the liquid cooling tube 4, the pipeline of the liquid cooling tube 4 is first cleared to avoid blockage, and the sediment is blocked and collected by the screen 802, and then the sediment in the coolant is concentrated to the position of sensor 2 8010. Sensor 2 8010 detects the content of the sediment and sends a signal to assist in judging the service life of the coolant, and then assist in improving the effect of water cooling heat dissipation. The above-mentioned work flow can be carried out while allowing sensor 1 706 to move for temperature monitoring. The above-mentioned action can be performed when the temperature is stable, thereby simultaneously realizing the functions of cleaning the pipeline in the liquid cooling tube 4 and collecting and monitoring the sediment, and completing the monitoring of the water cooling system while monitoring the temperature.

[0070] According to the embodiment of the present application, sleeve plates 12 are connected to both sides of the transverse platform 11. The sleeve plates 12 are mounted on the upper and lower surfaces of the slide grooves on the sliding plate 703. Rollers 13 are installed in the sleeve plates 12 to contact the sliding plate 703. The rolling of the rollers 13 reduces the friction of the transverse movement of the transverse platform 11, thereby reducing noise and energy consumption.

[0071] According to the embodiment of the present application, the inner wall of the liquid cooling tube 4 is connected to the inlet end of the corresponding series tube 19 with a fan-shaped guide plate 20. The guide plate 20 has a plurality of through holes for the coolant to pass through. The guide plate 20 is used to guide the sediment collector 801 into the series tube 19.

[0072] According to the embodiment of the present application, the sediment monitoring assembly 8 further includes two wheel rods 803, each hinged to the side of the sediment collector 801. The upper and lower surfaces of the free ends of the wheel rods 803 are rotatably connected to a contact wheel 804, which contacts the inner wall of the series pipe 19. A first sleeve 805 is connected to the sediment collector 801 between the two wheel rods 803. Support springs 808 are connected to the inner and outer walls of the first sleeve 805. The support springs 808 on the inner wall of the first sleeve 805 are connected to the rotating shaft 806, and the support springs 808 on the outer wall of the first sleeve 805 are connected to the wheel rods 803. The support springs 808 support the wheel rods 803, allowing the hinged wheel rods 803 to support the sediment collector 801, allowing the sediment collector 801 to remain sleeved on the inner walls of the liquid cooling pipe 4 and the series pipe 19 to prevent rotation.

[0073] According to an embodiment of the present application, the sediment monitoring component 8 also includes a fan plate 8013, which is arranged in the sieve hole of the sediment collector 801 and covers the sieve hole. A accommodating groove suitable for the fan plate 8013 is opened on the side of the sieve hole of the sediment collector 801. The end of the fan plate 8013 is connected to the rotating shaft 806, and the sensor 2 8010 is inserted into the storage tube 8011. An electric telescopic rod 8012 is installed on the top of the series tube 19, and the transmission shaft of the electric telescopic rod 8012 is connected to the sensor 2 8010.

[0074] In the embodiment, when the electromagnet 809 is energized to generate magnetic attraction to the magnetized part 807, the magnetized part 807 is driven by the force to drive the rotating shaft 806 to rotate and allow the fan plate 8013 to be stored in the receiving groove, allowing the coolant to pass through the sieve hole, thereby preventing the sliding of the screen 802 from being resisted by the coolant. When the power is off, the magnetized part 807 is free from the magnetic attraction, and at this time the support spring 808 rebounds to drive the rotating shaft 806 to rotate, and the fan plate 8013 covers the screen 802 again, and then the electric telescopic rod 8012 drives the sensor 2 8010 to descend, limiting the sediment collector 801, and allowing the sensor 2 8010 to approach the screen 802 to detect the amount of collected sediment. At this time, the fan plate 8013 closes the sieve hole, blocking the flow path of the coolant in the series pipe 19, avoiding the problem of mixed flow of cold and hot coolant, and ensuring the normal use of the water cooling system.

[0075] According to the battery pack provided in the embodiment of the present application, the heat emitted by the electrical module at that location is monitored by the sensor rack when passing through the opening. First, the approximate heat range of the battery module when storing energy is obtained and compared with the temperature data set on the battery module. While allowing a certain deviation, it is possible to determine whether the temperature sensor of the battery module is faulty, thereby realizing the monitoring of the power battery energy storage temperature and the temperature sensor at the same time.

[0076] According to the battery pack provided in the embodiment of the present application, a separate sensor 1 is used to perform data comparison with several temperature sensors. When sensor 1 fails, after multiple comparisons, if the deviation threshold is stably exceeded, the fault condition of sensor 1 can be known. Then the battery management system prompts for maintenance and disables sensor 1, avoiding the situation where multiple temperature sensors are set for the battery module to realize the comparison function, and a certain probability of simultaneous failure occurs and stable and effective monitoring data cannot be obtained, thereby increasing the limit for avoiding fire. The credibility of the data during line temperature monitoring is improved, and the probability of fire is further reduced.

[0077] According to the battery pack provided in the embodiment of the present application, when the sensor frame moves to the front side along with the transmission part of the electric guide rail, the sensor is tilted forward to correspond to the wires and other components at the front end of the frame, and the temperature of the components at this location is monitored. When sparks or high temperatures are caused by a short circuit in the line, a signal is sent in time to further reduce the occurrence of fire.

[0078] According to the battery pack provided in the embodiment of the present application, when the transverse platform moves longitudinally and transversely along the set program, it drives the sediment monitoring component to move, firstly, the pipeline of the liquid cooling pipe is unblocked to avoid blockage, and the sediment is blocked and collected by the screen, and then the sediment in the coolant is concentrated to the position of sensor two. Sensor two detects the content of the sediment and sends a signal to assist in judging the service life of the coolant, and then assists in improving the effect of water cooling heat dissipation. The above-mentioned work process can be carried out while allowing sensor one to move for temperature monitoring, thereby simultaneously realizing the functions of cleaning the pipeline in the liquid cooling pipe and monitoring the sediment collection, and completing the monitoring of the water cooling system while monitoring the temperature.

[0079] According to a second aspect of an embodiment of the present application, a vehicle is provided, which includes a battery pack as described above and also includes the beneficial effects as described above, which will not be repeated here. In an embodiment, the vehicle may be, for example, a new energy vehicle.

[0080] The above are only preferred embodiments of the present application and do not limit the scope of protection of the present application. All equivalent structural transformations made based on the contents of the present application specification and drawings under the innovative concept of the present application, or direct / indirect application in other related technical fields are included in the scope of protection of the present application.

Claims

1. A battery pack, characterized in that: The battery pack comprises: Battery module; a movable sensor configured to move along a predetermined trajectory outside the battery module to obtain a temperature at a position on the battery module corresponding to the predetermined trajectory; A liquid cooling pipe, the liquid cooling pipe is arranged on one side of the battery module, and a cooling liquid is circulated in the liquid cooling pipe; A sediment monitoring component, the sediment monitoring component comprises a sediment collector and a sediment detection sensor, the detection end of the sediment detection sensor is arranged in the liquid cooling tube, and the sediment collector is located in the liquid cooling tube; The predetermined trajectory is synthesized from at least one sub-trajectory, and the sediment detection sensor can move in the liquid cooling tube along a trajectory synthesized from at least one of the at least one sub-trajectory.

2. The battery pack according to claim 1, characterized in that: The battery module has a length direction and a width direction, the at least one sub-track includes a linear motion track moving along one of the length direction and the width direction, and the at least one sub-track also includes a rotation track rotating around an axis extending along the other of the length direction and the width direction; The sediment detection sensor moves in the liquid cooling tube along a trajectory synthesized by the linear motion trajectory.

3. The battery pack according to claim 1, characterized in that: The battery module is provided with a plurality of monitoring openings communicating with the interior of the battery module, and the predetermined trajectory passes through the plurality of monitoring openings.

4. The battery pack according to claim 3, characterized in that: The battery pack further includes a cover plate, which is disposed on the outer side of the battery module to cover the multiple monitoring openings.

5. The battery pack according to claim 1, characterized in that: The battery module has a length direction and a width direction, the battery pack includes a sliding plate, the sliding plate is connected to the active sensor, the sliding plate moves along one of the length direction and the width direction, and extends along the other of the length direction and the width direction; The battery module also includes a transverse platform arranged on the sliding plate and a force-applying component arranged on the transverse platform, the transverse platform moves along the other of the length direction and the width direction, and the force-applying component is used to apply force to the sediment detection sensor so that the sediment detection sensor moves synchronously with the transverse platform.

6. The battery pack according to claim 1, characterized in that: The sediment collector comprises: A main body, formed with a plurality of through holes penetrating the main body; A plurality of screens, wherein the plurality of screens are arranged in one-to-one correspondence with the plurality of through holes, and each of the screens covers a corresponding through hole; A plurality of fan plates are provided corresponding to the plurality of through holes one by one, each of the fan plates is used to cover the corresponding through hole, the plurality of fan plates are connected as a whole, and the plurality of fan plates are configured to be rotatable so that each fan plate covers and opens the corresponding through hole.

7. The battery pack according to claim 6, characterized in that: Each of the fan plates is configured to open the corresponding through hole when the sediment collector moves, and to cover the corresponding through hole when the sediment collector stops moving.

8. The battery pack according to claim 1, characterized in that: The sediment collector comprises: main body; A plurality of wheel rods, wherein the wheel rods are hinged to the main body; A plurality of reset components, each of which applies a force to the corresponding wheel rod away from the main body, so that the plurality of wheel rods are opened outward and abut against the inner side of the liquid cooling tube.

9. The battery pack according to claim 8, characterized in that: Each of the resetting members is configured to pull the corresponding wheel rod when the sediment collector moves, so as to retract the corresponding wheel rod.

10. A vehicle, characterized in that: The vehicle comprises the battery pack according to any one of claims 1 to 9.

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