Battery swap vehicle power battery deicing system

Abstract

The application discloses a power battery replacement vehicle type power battery deicing system and belongs to the technical field of pure electric vehicles, which comprises: a vehicle controller, which is used for sending a power battery replacement demand instruction to a battery management system; the battery management system, which is used for obtaining the power battery replacement demand instruction and judging whether the vehicle is in a driving state; a support inner wall heating system, which is connected with a power battery replacement station tray air heating system and is used for heating a power battery support; the vehicle controller is further used for obtaining the heating power of a vehicle body heat management system to control the temperature of the support inner wall heating system; a chassis power battery replacement auxiliary deicing structure, which is used for separating an auxiliary power battery support from a power battery during power battery replacement; and the power battery replacement station tray air heating system, which is used for bringing hot air to the automobile chassis part to melt ice and snow during power battery replacement. The application guarantees the normal operation of power battery replacement, greatly improves the power battery replacement efficiency and the power battery replacement success rate in winter.

Description

TECHNICAL FIELD

[0001] The application discloses a power battery deicing system for a battery swap vehicle and belongs to the technical field of pure electric vehicles. BACKGROUND

[0002] With the increasingly severe global energy crisis and environmental pollution, new energy vehicle technology is continuously matured, and the market share of new energy vehicles is continuously improved. Many new energy vehicle owners not only enjoy the convenience brought by new energy vehicles, but also face problems such as charging difficulty and long time consumption, so the battery swap vehicle emerges as the times require. The battery swap vehicle effectively improves the energy supplement efficiency of the new energy vehicle and relieves the range anxiety of the user by virtue of the efficient, convenient, chargeable and replaceable energy supplement mode. The battery swap efficiency, as a key parameter of the battery swap technology, is closely related to the driving experience and the competitiveness of the product, and is concerned by many users. However, in northern China, due to the freezing rain weather in winter, a large area of ice is formed between the external box of the power battery and the battery swap support, the power battery and the battery swap support are adhered, and then the locking mechanism is disabled, which leads to the increase of the battery swap time of the vehicle, and even the battery swap cannot be performed, which seriously affects the battery swap experience of the user and exists certain safety hazards. Therefore, it is necessary to design a battery swap system capable of effectively deicing in the freezing rain weather. SUMMARY

[0003] The application aims to solve the problem that the new energy battery swap vehicle cannot be normally swapped due to the large-area ice formed between the external box of the power battery and the battery fixing support in the freezing rain weather in northern China in winter, and provides a power battery deicing system for a battery swap vehicle.

[0004] The problem to be solved by the application is realized by the following technical scheme:

[0005] A power battery deicing system for a battery swap vehicle, comprising:

[0006] A vehicle controller configured to send a battery swap demand instruction to a battery management system;

[0007] The battery management system is configured to obtain the battery swap demand instruction and determine whether the vehicle is in a driving state:

[0008] Yes, collect the internal temperature of the power battery body and send the vehicle controller;

[0009] No, proceed to the next step;

[0010] Determine whether the host communication of the battery swap station is recognized through wireless Bluetooth:

[0011] Yes, send an instruction to start the battery swap station tray wind warming system to the host of the battery swap station;

[0012] No, re-determine whether the vehicle is in a driving state;

[0013] The inner wall heating system of the support is connected with the air heating system of the battery swap station tray and used for heating the power battery support;

[0014] The whole vehicle controller is further used for obtaining the heating power of the vehicle body thermal management system controlled according to the internal temperature of the power battery body to control the temperature of the inner wall heating system of the support;

[0015] The chassis battery swap auxiliary deicing structure is used for separating the auxiliary power battery support and the power battery during the battery swap process.

[0016] The air heating system of the battery swap station tray is used for bringing hot air to the chassis part of the vehicle to melt ice and snow during the battery swap process.

[0017] Preferably, the battery compartment is symmetrically arranged on the power battery support, the inner wall heating system of the support comprises heating pipelines symmetrically arranged around the battery compartment, the power battery support is respectively provided with a water inlet and a water outlet at one end, the heating pipelines are respectively connected with the water inlet and the water outlet at two ends, and the water inlet and the water outlet are respectively connected with the vehicle body thermal management system.

[0018] Preferably, the deicing installation part for setting the chassis battery swap auxiliary deicing structure is symmetrically arranged on the inner side of the power battery support at two ends of the battery compartment, the deicing installation part comprises an ejection cam rotatably arranged on the connecting plate of the power battery support at the middle of one side and a reduction motor fixedly arranged on the inner side of the deicing installation part, the main shaft of the reduction motor is connected with the middle of the other side of the ejection cam, the ejection cam is provided with an eccentric guide groove, the ejection rod is provided with guide rods on both sides of one end, the two guide rods are arranged in the eccentric guide groove, and the other end of the guide rod is matched with the power battery frame.

[0019] Preferably, the air heating system of the battery swap tray comprises a battery swap tray arranged in the battery swap station, a plurality of fans are uniformly arranged on the inner bottom of the battery swap tray, a heating fin fixing frame is arranged on the middle of the battery swap tray, a plurality of heating fins are uniformly arranged on the heating fin fixing frame, a hot air duct is arranged on the heating fin fixing frame between two adjacent heating fins, and a plurality of channels are arranged on the top of the battery swap tray.

[0020] Preferably, the whole vehicle controller is electrically connected with the battery management system and the vehicle body thermal management system, the battery management system is electrically connected with the reduction motor of the chassis battery swap auxiliary deicing structure, the battery swap station host is connected with the network, the battery swap station host is electrically connected with the controller of the air heating system of the battery swap tray, and the controller is electrically connected with the plurality of heating fins and the fans.

[0021] The present application has the following beneficial effects compared with the prior art:

[0022] The application discloses a power battery deicing system for a battery replacement vehicle, which is characterized in that: an inner wall heating system is arranged on the inner wall of a power battery support, a chassis battery replacement auxiliary deicing structure is arranged at the four corners of the power battery support, and a battery replacement station tray air heating system is arranged on a battery replacement station tray. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is the overall structure diagram of the battery replacement station tray air heating system in the power battery deicing system for the battery replacement vehicle.

[0024] Figure 2 is the partial overall structure diagram of the battery replacement station tray air heating system in the power battery deicing system for the battery replacement vehicle.

[0025] Figure 3 is the pipeline connection schematic diagram of the vehicle body thermal management system.

[0026] Figure 4 is the structure schematic diagram of the chassis battery replacement auxiliary deicing structure in the power battery deicing system for the battery replacement vehicle.

[0027] Figure 5 is the partial structure schematic diagram of the chassis battery replacement auxiliary deicing structure in the power battery deicing system for the battery replacement vehicle.

[0028] Figure 6 is the partial structure schematic diagram of the chassis battery replacement auxiliary deicing structure in the power battery deicing system for the battery replacement vehicle.

[0029] Figure 7 is the structure schematic diagram of the battery replacement tray air heating system in the power battery deicing system for the battery replacement vehicle.

[0030] Figure 8 is the electrical connection schematic diagram of the power battery deicing system for the battery replacement vehicle.

[0031] In the power battery deicing system for the battery replacement vehicle, the power battery support 1 is connected with the battery compartment 2, the inner wall heating system is arranged on the inner wall of the power battery support 1, the chassis battery replacement auxiliary deicing structure is arranged at the four corners of the power battery support 1, the battery replacement station tray air heating system is arranged on the battery replacement station tray, and the three are cooperatively used in the driving and battery replacement processes. DETAILED DESCRIPTION

[0032] The following is according to the drawings Figures 1-8Further description of the present application is as follows:

[0033] The technical solutions of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0034] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0035] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] The first embodiment of the present application provides a power battery deicing system for a battery replacement vehicle based on the prior art, comprising: a vehicle controller for sending a battery replacement demand instruction to a battery management system; the battery management system is used for obtaining the battery replacement demand instruction and judging whether the vehicle is in a running state:

[0037] Yes, collect the temperature inside the power battery body and send it to the vehicle controller;

[0038] No, then proceed to the next step of judgment;

[0039] Determine whether the host communication of the battery replacement station is recognized through wireless Bluetooth:

[0040] Yes, send an instruction to start the tray warm air system of the battery replacement station to the host of the battery replacement station;

[0041] No, rejudge whether the vehicle is in a running state;

[0042] The bracket inner wall heating system is connected with the battery swap station tray air heating system, and is used for heating the power battery bracket; the vehicle controller is further used for obtaining the internal temperature of the power battery body 21, controlling the heating power of the vehicle body thermal management system, and controlling the temperature of the bracket inner wall heating system; the chassis battery swap auxiliary deicing structure is used for separating the auxiliary power battery bracket and the power battery during the battery swap process.

[0043] The battery swap station tray air heating system is used for bringing hot air to the automobile chassis part to melt ice and snow during the battery swap process.

[0044] First, the bracket inner wall heating system is introduced, as shown in Figure 1 and 2 , which mainly functions to increase the temperature of the outer surface of the power battery bracket 1 in winter driving state through heating, prevent large-area icing between the battery box shell and the power battery bracket 1, and cause the two to be adhered and unable to normally replace the battery. The power battery bracket 1 is symmetrically provided with a battery compartment 2, the bracket inner wall heating system includes heating pipelines 3 uniformly arranged around the battery compartment 2 through fixing buckles 20, and the heating pipelines 3 are fixed in a manner of filling foam after being glued at positions where the fixing buckles 20 cannot be arranged. The power battery bracket 1 is respectively provided with a water inlet 4 and a water outlet 5 at one end, in order to ensure that each cross beam has a water heating pipeline line passing through, a pipe arrangement mode as shown in Figure 2 is adopted, the inner diameter of the water heating main pipeline needs to be greater than or equal to 8 mm, and the pipe thickness needs to be at least 4 mm, two water heating pipelines are folded back at the middle cross beam, and one is provided for four cross beams around, which can effectively ensure that the heat from the water heating pipeline is transmitted to each quick-change locking mechanism, and avoid freezing of any quick-change locking mechanism to cause locking mechanism failure in the battery swap process; the water inlet, the water outlet and the water heating pipeline need to be connected with each other in a welding manner. The two ends of the heating pipeline 3 are connected with the water inlet 4 and the water outlet 5 respectively, and the water inlet 4 and the water outlet 5 are connected with the vehicle body thermal management system respectively, so as to ensure that the vehicle heating system can provide sufficient heat.

[0045] As shown in Figure 3 , the cooling liquid is pumped into the first heating circuit by the first electric water pump, after passing through the PTC heating film, the first temperature sensor transmits the temperature data of the heated water back to the vehicle controller; then the cooling liquid passes through the heat exchanger and the air conditioning warm air core respectively after passing through the electronic three-way valve, the cooling liquid passing through the heat exchanger then enters the second heating circuit from the water inlet 4 of the power battery bracket 1. The water heating circuit in the power battery is pumped into the power battery by the second electric water pump, and the temperature data of the heated water is transmitted to the vehicle controller by the second temperature sensor. The vehicle controller adjusts the heating power of the PTC heating film by analyzing the temperature data of the first temperature sensor 1 and the second temperature sensor.

[0046] As shown in Figures 4-6As shown, the battery compartment 2 both ends power battery support 1 inside symmetrical arrangement for setting chassis battery replacement auxiliary deicing structure deicing installation part 6, deicing installation part 6 includes one side middle part rotationally installed in power battery support connecting plate 7 of ejection cam 8 and fixedly installed in the inside of deicing installation part 6 of reduction motor 9, the main shaft of reduction motor 9 is connected with the other side middle part of ejection cam 8, ejection cam 8 is equipped with eccentric guide groove 10, ejection rod 11 one end both sides are equipped with guide rod 12, two guide rods 12 are installed in eccentric guide groove 10, guide rod 12 other end is matched with power battery frame 13.

[0047] Adopt the reciprocating motion of ejection cam 8 rotation conversion, in the process of battery replacement, force power battery body 21 and power battery support 1 produce mutual far away movement trend. When power battery support 1 and power battery body 21 between icing adhesion or be stuck by silt, chassis battery replacement deicing structure can assist power battery frame 13 to separate from power battery support 1, complete the process of battery replacement. After power battery frame 13 separates from power battery support 1, reduction motor 9 drives ejection cam 8 with eccentric guide groove 10 counterclockwise rotation, guide rod 12 in eccentric guide groove 10 according to guide groove track sliding, drive ejection rod 11 upward movement, so ejection rod 11 will retract to the lower surface of power battery support 1, ensure that after replacing power battery body 21, new power battery body 21 can be smoothly loaded back to power battery support 1, and then complete the whole battery replacement process.

[0048] As shown in the figure, Figure 7 The battery replacement tray warm air system includes a battery replacement tray 14 installed in the battery replacement station, a plurality of fans 15 are uniformly arranged on the inner bottom of the battery replacement tray 14, a heating fin fixing frame 16 is arranged on the middle of the battery replacement tray 14, a plurality of heating fins 17 are uniformly arranged on the heating fin fixing frame 16, a hot air duct 18 is arranged on the heating fin fixing frame 16 between two adjacent heating fins 17, and a plurality of passages 19 are arranged on the top of the battery replacement tray 14.

[0049] As shown in the figure, Figure 8 The vehicle controller is electrically connected with the battery management system and the vehicle body thermal management system respectively, the battery management system is electrically connected with the reduction motor 9 of the chassis battery replacement auxiliary deicing structure, the battery replacement station host is connected with the controller of the battery replacement tray warm air system, and the controller is electrically connected with the plurality of heating fins 17 and the fans 15 respectively.

[0050] When the fan 15 rotates, the airflow enters the hot air duct 18 between the heating fins 17 after passing through the fan 15, is heated, and is discharged from the plurality of passages 19 on the top of the battery replacement tray 14. The part of the air is heated by the heating fins 17 and flows upward with the airflow, so that the hot air is brought to the automobile chassis part, and finally the temperature of the power battery body 21 and the power battery support 1 is increased to melt the ice and snow.

[0051] While embodiments of the application have been disclosed in connection with the above specification, it will be apparent to those skilled in the art that numerous modifications can be made thereto without departing from the underlying concept of the application. Accordingly, it is intended that all such modifications be included within the scope of the claims and their equivalents.

Claims

1. A battery swap vehicle power battery deicing system, characterized in that, The application relates to a vehicle battery replacement system. The vehicle controller sends a battery replacement demand instruction to the battery management system. The battery management system receives the battery replacement demand instruction and determines whether the vehicle is in a driving state. Yes, the temperature inside the power battery body (21) is sent to the vehicle controller. No, the next step is determined. Whether the host communication of the battery replacement station is identified through wireless Bluetooth. Yes, the host communication of the battery replacement station is sent to the battery replacement station. No, it is determined whether the vehicle is in a driving state. The support inner wall heating system is connected with the battery replacement station tray air heating system and is used for heating the power battery support. The vehicle controller also obtains the temperature inside the power battery body (21) to control the heating power of the vehicle body thermal management system and control the temperature of the support inner wall heating system. The chassis battery replacement auxiliary deicing structure is used for separating the auxiliary power battery support and the power battery during the battery replacement process. The battery replacement station tray air heating system is used for bringing hot air to the automobile chassis part to melt ice and snow during the battery replacement process. The power battery support (1) is arranged symmetrically on the two ends of the battery compartment (2), and the deicing mounting portion (6) for setting the chassis battery replacement auxiliary deicing structure is arranged on the inner side of the power battery support (1). When the power battery support (1) and the power battery body (21) are frozen and adhered or are stuck by mud, the power battery frame (13) is separated from the power battery support (1), the reduction motor (9) drives the ejection cam (8) with the eccentric guide groove (10) to rotate counterclockwise, the guide rod (12) slides in the eccentric guide groove (10) according to the guide groove track, drives the ejection rod (11) to move upward, and the ejection rod (11) is retracted into the lower surface of the power battery support (1).

2. The power battery de-icing system of claim 1, wherein, The power battery support (1) is arranged symmetrically on the two ends of the battery compartment (2), and the deicing mounting portion (6) for setting the chassis battery replacement auxiliary deicing structure is arranged on the inner side of the power battery support (1).

3. The battery swap vehicle power battery deicing system of claim 2, wherein, The battery swap station tray wind heating system comprises a battery swap tray (14) arranged in the battery swap station, a plurality of fans (15) are uniformly arranged on the inner bottom of the battery swap tray (14), a heating fin fixing frame (16) is arranged in the middle of the battery swap tray (14), a plurality of heating fins (17) are uniformly arranged on the heating fin fixing frame (16), a hot air duct (18) is arranged on the heating fin fixing frame (16) between two adjacent heating fins (17), and a plurality of channels (19) are arranged on the top of the battery swap tray (14).

4. The battery swap vehicle power battery deicing system of claim 3, wherein, The whole vehicle controller is electrically connected with the battery management system and the vehicle body thermal management system respectively, the battery management system is electrically connected with the speed reducer (9) of the chassis battery swap auxiliary deicing structure, the battery swap station host is connected with the network, the battery swap station host is electrically connected with the controller of the battery swap station tray wind heating system, and the controller is electrically connected with the plurality of heating fins (17) and the fans (15) respectively.

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