Charging data acquisition device and charging data acquisition system

Abstract

The utility model discloses a charging data acquisition device and a charging data acquisition system, the charging data acquisition device comprises a gun head switching unit, an acquisition unit and a liquid cooling unit, the liquid cooling unit is connected with the gun head switching unit, the gun head switching unit comprises a high-voltage acquisition interface, and the acquisition unit is connected with the high-voltage acquisition interface; the gun head switching unit collects a high-voltage signal in the charging process of the electric vehicle through the high-voltage collection interface; and the acquisition unit receives and processes the high-voltage signal. The technical problem that in the prior art, only data collection of a small-power charging scene of the electric vehicle can be achieved, and data collection of a large-power charging scene of the electric vehicle cannot be achieved can be solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the electric vehicle signal acquisition technical field, and particularly relates to a charging data acquisition device and a charging data acquisition system. BACKGROUND

[0002] With the popularity of electric vehicles and the development of fast charging technology, the demand for charging infrastructure is also growing. In order to optimize charging efficiency and ensure charging safety, data during the charging process of electric vehicles needs to be collected.

[0003] The charging demand of electric vehicles is gradually changing to high-power charging scenarios with the popularity of electric vehicles, and the existing technology only collects data for small-power charging scenarios, which is difficult to cope with higher currents and more complex electrical characteristics generated during high-power charging.

[0004] The above content is only used to assist in understanding the technical solutions of the present application, and does not represent the acknowledgement of the above content as prior art. UTILITY MODEL CONTENT

[0005] The main purpose of the present application is to provide a charging data acquisition device and a charging data acquisition system, which aims to solve the technical problem that the existing technology can only realize data acquisition for small-power charging scenarios of electric vehicles and cannot collect data for high-power charging scenarios of electric vehicles.

[0006] To achieve the above purpose, the present application provides a charging data acquisition device, comprising: a gun head adapter unit, an acquisition unit and a liquid cooling unit, the liquid cooling unit and the gun head adapter unit are connected, the gun head adapter unit comprises a high-voltage acquisition interface, and the acquisition unit is connected with the high-voltage acquisition interface; the gun head adapter unit collects high-voltage signals during the charging process of electric vehicles through the high-voltage acquisition interface; the acquisition unit receives and processes the high-voltage signals.

[0007] Optionally, the gun head adapter unit further comprises a gun head, a gun seat and a second signal acquisition interface; the gun head adapter unit further collects the temperature of the gun head and the temperature of the gun seat during the charging process of electric vehicles through the second signal acquisition interface; the acquisition unit is further connected with the second signal acquisition interface, for receiving and processing the temperature of the gun head and the temperature of the gun seat.

[0008] Optionally, the gun head adapter unit further comprises a plurality of current sensors, and a plurality of power cables and a plurality of signal cables connecting the gun head and the gun seat; the plurality of current sensors are respectively sleeved outside at least one power cable and at least one signal cable; the gun head adapter unit collects the current flowing through the power cable and the current flowing through the signal cable during the charging process of the electric vehicle through the current sensors; the acquisition unit is connected with the plurality of current sensors through the second signal acquisition interface, for receiving and processing the current flowing through the power cable and the current flowing through the signal cable.

[0009] Optionally, the gun head adapter unit further comprises a first signal acquisition interface; the gun head adapter unit collects low-voltage signals and communication signals during the charging process of the electric vehicle through the first signal acquisition interface; the acquisition unit is connected with the first signal acquisition interface, for receiving and processing the low-voltage signals and the communication signals.

[0010] Optionally, the gun head and the gun seat are direct current gun head and direct current gun seat, and the gun head adapter unit further comprises cooling pipes; each of the cooling pipes is sleeved around each of the power cables; the liquid cooling unit is connected with each of the cooling pipes and performs liquid cooling on the gun head adapter unit through the cooling pipes.

[0011] Optionally, the liquid cooling unit comprises a liquid cooling pump and a liquid delivery pipe; the cooling pipes are connected with the liquid cooling pump through the liquid delivery pipe.

[0012] Optionally, the gun head adapter unit comprises two power cables and seven signal cables; the two power cables comprise a DC+ cable and a DC- cable; the seven signal cables comprise a PE cable, an S+ cable, an S- cable, a CC1 cable, a CC2 cable, an A+ cable and an A- cable.

[0013] Optionally, the gun head adapter unit comprises two cooling pipes, and the two cooling pipes are respectively sleeved around the DC+ cable and the DC- cable.

[0014] Optionally, the gun head adapter unit comprises a first current sensor and a second current sensor; the first current sensor is sleeved outside the DC+ cable, and the second current sensor is sleeved outside the A+ cable.

[0015] In addition, in order to achieve the above-mentioned purpose, the application further provides a charging data acquisition system comprising the charging data acquisition device.

[0016] The application provides a charging data acquisition device and a charging data acquisition system. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A first structural schematic diagram of the charging data acquisition device is provided in the application.

[0018] Figure 2 A second structural schematic diagram of the charging data acquisition device is provided in the application.

[0019] Figure 3 A third structural schematic diagram of the charging data acquisition device is provided in the application.

[0020] Figure 4 A connection schematic diagram of the gun head switching unit and the liquid cooling unit in the charging data acquisition device is provided in the application.

[0021] The application is further described below with reference to the drawings. DETAILED DESCRIPTION

[0022] The technical solutions in the application will be described clearly and completely below with reference to the drawings in the application. Obviously, the described embodiments are only some of the embodiments of the application, but not all the embodiments of the application. Based on the embodiments in the application, all the other embodiments obtained by those skilled in the art without any creative work fall within the protection scope of the application.

[0023] In the application, unless otherwise explicitly defined and limited, the terms "connection", "fixing" and the like should be understood in a broad sense, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meanings of the above terms in the application can be understood according to the specific circumstances.

[0024] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. For example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection required by the present application.

[0025] As the charging demand of electric vehicles gradually changes to high-power charging scenarios, the prior art can only realize data collection for small-power charging scenarios of electric vehicles, and cannot collect data for high-power charging scenarios of electric vehicles. At the same time, when using the prior art to collect data during the charging process of electric vehicles, the charging environment needs to be destroyed or the charging pile needs to be opened, thereby affecting the normal use and safety of the charging pile.

[0026] To solve the above problems, the present application provides a charging data collection device, which will be described in detail below.

[0027] Please refer to Figure 1 , Figure 1 The first structure diagram of the charging data collection device provided by the embodiments of the present application can include: a gun head adapter unit 10, a collection unit 20, a liquid cooling unit 30, the liquid cooling unit 30 and the gun head adapter unit 10 are connected, the gun head adapter unit 10 includes a high-voltage collection interface 100, the gun head adapter unit 10 collects high-voltage signals during the charging process of electric vehicles through the high-voltage collection interface 100, the collection unit 20 is connected with the gun head adapter unit 10 through the high-voltage collection interface 100, and receives and processes the high-voltage signals.

[0028] Among them, the collection unit 20 can include a high-voltage collection module, which can be used to receive and process high-voltage signals during the charging process of electric vehicles. The collection unit 20 is connected with the high-voltage collection interface through a plurality of collection wire harnesses.

[0029] In the present exemplary embodiment, the high-voltage collection interface 100 in the gun head adapter unit 10 can be connected with a plurality of power cables, which are used to collect high-voltage signals during the charging process of electric vehicles and convert the high-voltage signals into data that can be processed by the collection unit 20.

[0030] It should be noted that the embodiment can solve the problem that the prior art can only realize data collection for the low-power charging scene of the electric vehicle, and cannot collect data for the high-power charging scene of the electric vehicle by additionally adding the high-voltage collection interface and the power cables, and the embodiment further adds the liquid cooling unit, so that the heat generated during high-power charging of the electric vehicle can be reduced by the liquid cooling unit, thereby realizing stable charging of the electric vehicle at 800A high power.

[0031] On the basis of the above embodiment, Figure 2 The second structure diagram of the charging data collection device provided by the embodiment of the present application is as follows, Figure 2 The structure diagram of the charging data collection device corresponding to the preferred embodiment based on Figure 1 Please refer to Figure 2 The charging data collection device can include a gun head adapter unit 10, a collection unit 20, and a liquid cooling unit 30, wherein the liquid cooling unit 30 is connected with the gun head adapter unit 10. The gun head adapter unit 10 can include a high-voltage collection interface 100, a gun head 200, a gun seat 300, and a second signal collection interface 400. The high-voltage collection interface 100 and the second signal collection interface 400 are both connected with the collection unit 20. The gun head adapter unit 10 collects high-voltage signals and the temperatures of the gun head and the gun seat during the charging process of the electric vehicle through the high-voltage collection interface 100 and the second signal collection interface 400, respectively.

[0032] The collection unit 20 can include a high-voltage collection module and a temperature collection module. The temperature collection module can be used to receive and process the temperatures of the gun head and the gun seat during the charging process of the electric vehicle, so as to ensure the safety of the charging process and effectively prolong the service life of the device. The collection unit 20 is connected with the high-voltage collection interface 100 and the second signal collection interface 400 through a plurality of collection wire harnesses. The gun head 200 and the gun seat 300 can be direct-current gun heads and direct-current gun seats, or alternating-current gun heads and alternating-current gun seats.

[0033] It can be understood that the second signal collection interface 400 can be connected with the gun head 200 and the gun seat 300 through a plurality of collection cables, so as to collect the temperatures of the gun head and the gun seat during the charging process of the electric vehicle.

[0034] In the exemplary embodiment, please continue to refer to Figure 2The gun head adapter unit can further include a plurality of current sensors, and a plurality of power cables and a plurality of signal cables connecting the gun head 200 and the gun seat 300, the plurality of current sensors are respectively sleeved outside at least one power cable and at least one signal cable, the gun head adapter unit 10 collects the current flowing through the power cable and the current flowing through the signal cable during the charging process of the electric vehicle through the current sensors, and the acquisition unit 20 is connected with the plurality of current sensors through the second signal acquisition interface 400, for receiving and processing the current flowing through the power cable and the current flowing through the signal cable.

[0035] The acquisition unit 20 can include a high-voltage acquisition module, a temperature acquisition module, and a current acquisition module, the current acquisition module can be used to receive and process the current flowing through the power cable and the current flowing through the signal cable, so as to prevent overload or current anomaly and ensure stable transmission of charging information during the charging process of the electric vehicle.

[0036] Exemplarily, the current sensor is two, which are a first current sensor 500 and a second current sensor 600, the first current sensor 500 is sleeved outside a power cable, and the second current sensor 600 is sleeved outside a signal cable.

[0037] It can be understood that the second signal acquisition interface 400 can be connected with the first current sensor 500 and the second current sensor 600 through a plurality of acquisition cables respectively, for collecting the current flowing through the power cable and the current flowing through the signal cable. The high-voltage acquisition interface 100 can also be connected with each power cable through a plurality of power acquisition cables, for collecting high-voltage signals during the charging process of the electric vehicle.

[0038] In the exemplary embodiment, please continue to refer to Figure 2 The gun head adapter unit can further include a first signal acquisition interface 700, the gun head adapter unit 10 collects low-voltage signals and communication signals during the charging process of the electric vehicle through the first signal acquisition interface 700, and the acquisition unit 20 is connected with the first signal acquisition interface 700, for receiving and processing the low-voltage signals and the communication signals.

[0039] The acquisition unit 20 can include a high-voltage acquisition module, a temperature acquisition module, a current acquisition module, and a low-voltage acquisition module, the low-voltage acquisition module can be used to receive and process low-voltage signals and communication signals during the charging process of the electric vehicle, so as to monitor the charging state of the battery in real time and discover potential safety hazards in time.

[0040] It can be understood that the first signal collection interface 700 can be connected with each signal cable through a plurality of collection cables to collect low-voltage signals and communication signals in the charging process of the electric vehicle. The gun head adapter unit 10 is connected to the collection unit through a plurality of collection interfaces and collection cables to collect and analyze information such as current, voltage, temperature, and communication messages in the charging process of the electric vehicle.

[0041] In the example embodiment, please continue to refer to Figure 2 , Figure 2 The gun head and the gun seat can be the AC gun head 200 and the AC gun seat 300. It should be noted that the AC charging mode is one of the most common charging modes in electric vehicles, and is particularly suitable for home and public charging stations. In addition, the AC cable is universally designed with a standardized design worldwide, so it can be suitable for charging needs of various electric vehicles.

[0042] In the specific implementation process, when the charging data collection device in the embodiment is used to collect data in the charging process of the electric vehicle, the AC gun head in the gun head adapter unit is first connected to the electric vehicle charging socket, the charging gun head of the charging pile is inserted into the AC gun seat in the gun head adapter unit, and then a plurality of collection cables are used to connect the high-voltage collection interface, the first signal collection interface, and the second signal collection interface in the gun head adapter unit with the collection unit, so that the data in the charging process of the electric vehicle can be collected and analyzed without damaging the existing charging environment.

[0043] On the basis of the above embodiment, Figure 3 a third structure diagram of the charging data collection device according to the embodiment of the application is provided, Figure 3 a preferred embodiment of the structure diagram of the charging data collection device based on Figure 2 is provided.

[0044] In Figure 3 the gun head and the gun seat are the DC gun head 200 and the DC gun seat 300. Please refer to Figure 3 , the charging data collection device can include a gun head adapter unit 10, a collection unit 20, and a liquid cooling unit 30. The gun head adapter unit 10 can include a high-voltage collection interface 100, a DC gun head 200, a DC gun seat 300, a second signal collection interface 400, a first current sensor 500, a second current sensor 600, a first signal collection interface 700, a plurality of cooling pipes 800, a plurality of DC power cables and a plurality of signal cables connecting the DC gun head 200 and the DC gun seat 300. The collection unit 20 can include a high-voltage collection module, a temperature collection module, a current collection module, and a low-voltage collection module. The liquid cooling unit 30 can include a liquid cooling pump 310 and a liquid delivery pipe 320.

[0045] Each cooling pipe 800 is sleeved on the outer periphery of each power cable, and an inner cavity is formed between the inner wall of the cooling pipe and the power cable. Each cooling pipe 800 is connected to the liquid cooling pump 310 through the liquid delivery pipe 320. The liquid cooling unit 30 controls the cooling liquid to flow through the inner cavity of the cooling pipe 800, thereby achieving the cooling of each power cable. Exemplarily, the cooling liquid can be liquid cooling oil, which has good insulation performance and can effectively take away heat without conducting electricity.

[0046] It should be noted that when charging the electric vehicle using a direct current power supply, the direct current charging pile does not need to use the on-board charger to convert alternating current into direct current, so that the direct current charging pile has a faster charging speed and a higher output power than the alternating current charging pile, and can provide a larger amount of electricity to the electric vehicle in a short time, and thus the direct current charging pile is more suitable for fast charging scenarios.

[0047] It should be further noted that when the current passes through the cable, heat is generated inside the cable due to resistance, especially when high-power transmission, heat accumulation can cause the cable to overheat, which can threaten the safety of the cable.

[0048] Based on this, the application further increases the liquid cooling unit on the basis of increasing the high-voltage interface. When the gun head and the gun seat are direct current gun heads and direct current gun seats, cooling pipes are sleeved on the outside of the power cables, and the cooling pipes are connected to the liquid cooling pump through the liquid delivery pipe. The heat generated inside the cable can be taken away by the liquid cooling oil in the cooling pipe to prevent the cable temperature from being too high, thereby effectively prolonging the service life of the cable.

[0049] Exemplarily, please continue to refer to Figure 3 The gun head adapter unit 10 can include two power cables and seven signal cables. The two power cables include a DC+ cable and a DC- cable. The seven signal cables include a PE cable, an S+ cable, an S- cable, a CC1 cable, a CC2 cable, an A+ cable, and an A- cable. The gun head adapter unit 10 can further include two current sensors. A first current sensor 910 is sleeved on the outside of the DC+ cable, and a second current sensor 920 is sleeved on the outside of the A+ cable. The gun head adapter unit 10 can further include two cooling pipes 800, which are respectively sleeved on the outside of the DC+ cable and the DC- cable.

[0050] The one end of the DC+ cable and the one end of the DC- cable are respectively connected with one power collection cable and the high voltage collection interface 100; the one end of the S+ cable, the S- cable, the CC1 cable, the CC2 cable, the A+ cable and the A- cable are respectively connected with one collection cable and the first signal collection interface 700; two collection cables are respectively led out from the DC gun head 200 and the DC gun holder 300 and connected with the second signal collection interface 400; the first current sensor 910 and the second current sensor 920 are respectively connected with the second signal collection interface 400 through two collection cables. It should be noted that the PE cable is a grounding cable, which is not connected with the first signal collection interface 700 in the embodiment.

[0051] In the example embodiment, the DC gun head 200 and the DC gun holder 300 are international DC gun heads and international DC gun holders, which are connected through nine cables, and the length of each cable is less than 200 mm, so that the charging data collection device in the embodiment has universality and portability, and can be applied to indoor environment and outdoor environment, and does not need to be installed, but can be used immediately.

[0052] It can be understood that the charging data collection device provided by the embodiment of the application not only refers to the relevant standards of electric vehicle charging, but also refers to the relevant standards of measurement, control and laboratory electrical equipment, such as international DC gun heads and international DC gun holders, and has wide compatibility and universality, and can be applied to indoor environment and outdoor environment. At the same time, the charging data collection device provided by the embodiment of the application can collect and analyze data in the electric vehicle charging process without damaging the existing charging environment, and is portable and more efficient when used.

[0053] Please refer to Figure 4 , Figure 4 for Figure 3 the connection diagram of the gun head adapter unit and the liquid cooling unit in the corresponding charging data collection device. It can be understood that each cooling pipe has an inlet end and an outlet end, and the inlet end and the outlet end of each cooling pipe are connected with the liquid delivery pipe.

[0054] It should be noted that please continue to refer to Figure 4 Two collection cables T1+, T1- are led out from the DC gun head 200 and connected with the second signal collection interface 400; two collection cables T2+, T2- are led out from the DC gun holder 300 and connected with the second signal collection interface 400. The first current sensor 910 and the second current sensor 920 are respectively connected with the second signal collection interface 400 through two collection cables I1, I2.

[0055] In the specific implementation process, when the charging data acquisition device in the embodiment is used to acquire data during charging of the electric vehicle, first, the DC gun head in the gun head adapter unit is connected to the electric vehicle charging socket, the charging gun head of the charging pile is inserted into the DC gun seat in the gun head adapter unit, and a plurality of acquisition cables are used to connect the high-voltage acquisition interface, the first signal acquisition interface, and the second signal acquisition interface in the gun head adapter unit with the acquisition unit. Then, the liquid cooling pump and the acquisition unit are started, and the data during charging of the electric vehicle is transmitted to the acquisition unit through the plurality of acquisition interfaces and the acquisition cables, so that the data during charging of the electric vehicle is acquired and analyzed without damaging the existing charging environment.

[0056] When the power cable is liquid-cooled and cooled, the liquid cooling oil is first output through the liquid cooling inlet of the liquid cooling pump, and then the liquid cooling oil is delivered to the inlet ends of the two cooling pipes sleeved with the DC+ cable and the DC- cable through the liquid delivery pipe. The liquid cooling oil passes through the inner cavity of the cooling pipe, thereby realizing liquid cooling and temperature reduction of the DC+ cable and the DC- cable. After the temperature reduction of the DC+ cable and the DC- cable is completed, the liquid cooling oil flows out from the outlet ends of the two cooling pipes and returns to the liquid cooling pump through the liquid delivery pipe, thereby completing the liquid cooling and temperature reduction of the gun head adapter unit during high-power charging.

[0057] It should be noted that the embodiment of the present application can realize synchronous acquisition and analysis of data during charging of the electric vehicle in the high-power charging scene without damaging the existing charging environment. The embodiment of the present application can be applied to vehicle research and development, road test data acquisition by testing agencies, and can help vehicle enterprises analyze abnormal problems occurring during real vehicle charging. The embodiment of the present application can also be applied to vehicle after-sales use, and through fault analysis, helps vehicle enterprises quickly locate faults and establish a problem library.

[0058] On the basis of the above-mentioned embodiments, the present application further provides a charging data acquisition system, comprising the charging data acquisition device described in any of the above-mentioned embodiments, wherein the charging data acquisition device is arranged in the charging data acquisition system, so that data acquisition during charging of the electric vehicle can be realized. It should be understood that the charging data acquisition system also includes the beneficial effects described in any of the above-mentioned embodiments, which will not be described here.

[0059] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.

Claims

1. A charging data collection device, characterized by, The charging data acquisition device comprises a gun head adapter unit, an acquisition unit and a liquid cooling unit, the liquid cooling unit is connected with the gun head adapter unit, the gun head adapter unit comprises a high-voltage acquisition interface, and the acquisition unit is connected with the high-voltage acquisition interface; The gun head adapter unit acquires high-voltage signals in the charging process of the electric vehicle through the high-voltage acquisition interface; The acquisition unit receives and processes the high-voltage signals.

2. The charging data collection device of claim 1, wherein, The gun head adapter unit further comprises a gun head, a gun seat and a second signal acquisition interface; The gun head adapter unit further acquires the temperature of the gun head and the temperature of the gun seat in the charging process of the electric vehicle through the second signal acquisition interface; The acquisition unit is further connected with the second signal acquisition interface for receiving and processing the temperature of the gun head and the temperature of the gun seat.

3. The charging data collection device of claim 2, wherein, The gun head adapter unit further comprises a plurality of current sensors, a plurality of power cables and a plurality of signal cables connecting the gun head and the gun seat; The plurality of current sensors are respectively sleeved outside at least one power cable and at least one signal cable; The gun head adapter unit acquires the current flowing through the power cable and the current flowing through the signal cable in the charging process of the electric vehicle through the current sensor; The acquisition unit is connected with the plurality of current sensors through the second signal acquisition interface for receiving and processing the current flowing through the power cable and the current flowing through the signal cable.

4. The charging data collection device of claim 1, wherein, The gun head adapter unit further comprises a first signal acquisition interface; The gun head adapter unit acquires low-voltage signals and communication signals in the charging process of the electric vehicle through the first signal acquisition interface; The acquisition unit is connected with the first signal acquisition interface for receiving and processing the low-voltage signals and the communication signals.

5. The charging data collection device of claim 3, wherein, The gun head and the gun seat are direct current gun heads and direct current gun seats, and the gun head adapter unit further comprises cooling pipes; Each of the cooling pipes is sleeved around each of the power cables; The liquid cooling unit communicates with each of the cooling pipes and performs liquid cooling on the gun head adapter unit through the cooling pipes.

6. The charging data collection device of claim 5, wherein, The liquid cooling unit comprises a liquid cooling pump and a liquid delivery pipe; The cooling pipes are connected with the liquid cooling pump through the liquid delivery pipe.

7. The charging data collection device of claim 5, wherein, The gun head adapter unit comprises two power cables and seven signal cables; The two power cables comprise a DC+ cable and a DC- cable; The seven signal cables comprise a PE cable, an S+ cable, an S- cable, a CC1 cable, a CC2 cable, an A+ cable and an A- cable.

8. The charging data collection device of claim 7, wherein, The gun head adapter unit comprises two cooling pipes, which are respectively sleeved around the DC+ cable and the DC- cable.

9. The charging data collection device of claim 7, wherein, The gun head adapter unit comprises a first current sensor and a second current sensor; The first current sensor is sleeved outside the DC+ cable, and the second current sensor is sleeved outside the A+ cable.

10. A charge data collection system characterized by, The charging data acquisition device comprises the charging data acquisition device according to any one of claims 1-9.

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