Temperature measuring device, energy storage cabinet and energy storage system

Abstract

The utility model belongs to the technical field of temperature control, and particularly relates to a temperature measuring device, an energy storage cabinet and an energy storage system, and the temperature measuring device comprises a plurality of wireless temperature measuring units and a wireless temperature controller. Wherein the wireless temperature measuring unit is installed on a cable connector, and the wireless temperature controller is installed in a control cabinet; the wireless temperature measuring unit interacts with the wireless temperature controller through radio waves; according to the utility model, the wireless temperature measuring unit is arranged on each cable connector, and wireless networking is carried out through the wireless temperature controller and each wireless temperature measuring unit, so that accurate temperature measurement of the cable connectors can be realized, and meanwhile, compared with an existing battery pack internal wired temperature detection mode, wire harnesses can be reduced, and disassembly and assembly are convenient and fast.

Description

Technical Field

[0001] The utility model belongs to the technical field of temperature control, and specifically relates to a temperature measuring device, an energy storage cabinet and an energy storage system. Background Art

[0002] Cable connectors are used in the lithium battery energy storage industry, and about 150,000 cable connectors are used for every 1MWh of air-cooled energy storage, and about 52,000 cable connectors are used for every 1GWh of liquid-cooled energy storage. The most critical and weakest link of the cable connector is the contact resistance. Due to the large contact resistance, it is more likely to cause overheating. Long-term operation will reduce the life of the cable connector and cable, and in severe cases, cause fire.

[0003] Currently, the energy storage industry uses wired temperature probes to detect the temperature inside the battery pack of the cable connector. However, wired temperature probes have limitations and cannot accurately detect the temperature at the cable connector position. In addition, when installing wired temperature probes inside the battery pack, each wired temperature probe needs to be wired and powered, which makes installation and replacement inconvenient.

[0004] Therefore, it is urgent to develop a new temperature measuring device, energy storage cabinet and energy storage system to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a temperature measuring device, an energy storage cabinet and an energy storage system.

[0006] In order to solve the above technical problems, the utility model provides a temperature measuring device, which includes: a plurality of wireless temperature measuring units and a wireless temperature controller; wherein the wireless temperature measuring units are installed on a cable connector, and the wireless temperature controller is installed in a control cabinet; the wireless temperature measuring units interact with the wireless temperature controller via radio waves.

[0007] Specifically, the wireless temperature measurement unit includes: a passive wireless temperature measurement sensor; the passive wireless temperature measurement sensor is installed on a cable connector to collect temperature information and send it to the wireless temperature controller.

[0008] Specifically, the passive wireless temperature measuring sensor includes: a strap-type wireless temperature measuring sensor.

[0009] On the other hand, the utility model provides an energy storage cabinet, which includes: a temperature measuring device, a local controller and a switch as described above; wherein the wireless temperature controller in the temperature measuring device is electrically connected to the local controller, and the local controller is electrically connected to the switch; the local controller is suitable for reading the temperature information collected by the wireless temperature controller, and the local controller transmits the temperature information to the energy management system and the battery management system through the switch.

[0010] Specifically, the energy storage cabinet further includes: a plurality of battery clusters; a plurality of battery boxes are arranged in each battery cluster, and a wireless temperature measuring unit is arranged on the positive pole and the negative pole of each battery box.

[0011] In a third aspect, the utility model provides an energy storage system, which includes: an energy storage cabinet, an energy management system and a battery management system as described above; wherein the energy management system and the battery management system are electrically connected to a switch in the energy storage cabinet.

[0012] Specifically, the wireless temperature controller in the energy storage cabinet sets a first temperature value and a second temperature value, and the wireless temperature controller compares the temperature information collected by each wireless temperature measuring unit with the first temperature value and the second temperature value.

[0013] Specifically, when the temperature information collected by any of the wireless temperature measuring units is greater than a first temperature value and less than a second temperature value, the wireless temperature controller sends a high temperature alarm signal to the energy management system and the battery management system through the local controller and the switch.

[0014] Specifically, when the temperature information collected by any of the wireless temperature measuring units is greater than the second temperature value, the wireless temperature controller sends an over-temperature shutdown signal to the energy management system and the battery management system through the local controller and the switch.

[0015] Specifically, after receiving an over-temperature shutdown signal from the energy management system and the battery management system, the battery management system executes a shutdown command.

[0016] The beneficial effect of the utility model is that the utility model can accurately measure the temperature of the cable connector by installing a wireless temperature measuring unit on each cable connector and wirelessly networking the wireless temperature controller with each wireless temperature measuring unit. At the same time, compared with the existing wired temperature detection method inside the battery pack, the utility model can reduce the wiring harness and is convenient and quick to disassemble and assemble.

[0017] Other features and advantages of the present invention will be set forth in the following description, and in part will become apparent from the description, or may be understood by implementing the present invention.

[0018] In order to make the above-mentioned objects, features and advantages of the present invention 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] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a principle block diagram of the temperature measuring device of the utility model;

[0021] Figure 2 It is a structural diagram of the temperature measuring device of the utility model;

[0022] Figure 3 It is a principle block diagram of the energy storage cabinet of the utility model;

[0023] Figure 4 It is a principle block diagram of the energy storage system of the utility model.

[0024] In the figure:

[0025] 1. Passive wireless temperature sensor; 2. Watch strap; 3. Cable connector. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Embodiment 1, in this embodiment, as Figure 1 to Figure 2 As shown, this embodiment provides a temperature measuring device, which includes: a plurality of wireless temperature measuring units and a wireless temperature controller; wherein the wireless temperature measuring unit is installed on the cable connector 3, and the wireless temperature controller is installed in the control cabinet; the wireless temperature measuring unit interacts with the wireless temperature controller via radio waves.

[0028] In this embodiment, by installing a wireless temperature measuring unit on each cable connector 3 and wirelessly networking with each wireless temperature measuring unit through a wireless temperature controller, accurate temperature measurement of the cable connector 3 can be achieved. Compared with the existing wired temperature detection method inside the battery pack, the wiring harness can be reduced, and disassembly and assembly is convenient and quick.

[0029] As an optional implementation of the wireless temperature measurement unit, the wireless temperature measurement unit includes: a passive wireless temperature measurement sensor 1; the passive wireless temperature measurement sensor 1 is installed on a cable connector 3 to collect temperature information and send it to the wireless temperature controller.

[0030] Specifically, the passive wireless temperature measuring touch sensor 1 does not require an external power supply, does not have excessive wiring harnesses, and can measure temperature more accurately.

[0031] For easy installation, the passive wireless temperature measuring sensor includes: a watchband type wireless temperature measuring sensor, that is, the passive wireless temperature measuring sensor 1 is tied to the cable connector 3 through a watchband 2 .

[0032] Specifically, the installation through the strap 2 can solve the problem of inconvenient installation and replacement, and the temperature of the cable connector 3 can be directly collected, and the temperature measurement is accurate.

[0033] In this embodiment, the wireless temperature controller communicates with the passive wireless temperature measuring sensor 1 on each cable connector 3 via radio waves to monitor the real-time temperature of each point, and can monitor up to 256 points.

[0034] Embodiment 2, on the basis of embodiment 1, as Figures 1 to 3 As shown, this embodiment provides an energy storage cabinet, which includes: a temperature measuring device, a local controller and a switch as provided in Example 1; wherein the wireless temperature controller in the temperature measuring device is electrically connected to the local controller, and the local controller is electrically connected to the switch; the local controller is suitable for reading the temperature information collected by the wireless temperature controller, and the local controller transmits the temperature information to the energy management system and the battery management system through the switch.

[0035] Specifically, the energy storage cabinet further includes: a plurality of battery clusters; a plurality of battery boxes are arranged in each battery cluster, and a wireless temperature measuring unit is arranged on the positive pole and the negative pole of each battery box.

[0036] In this embodiment, at least 10 battery clusters are arranged in the energy storage cabinet, and each battery cluster consists of 8 battery boxes and 1 high-voltage box, that is, the positive and negative cable connectors 3 of 80 battery boxes need to be measured in temperature, and 160 passive wireless temperature measuring touch sensors 1 are arranged. The passive wireless temperature measuring touch sensors 1 are respectively tied to the 160 cable connectors 3, and then the wireless temperature controller is installed in the control cabinet. The 160 passive wireless temperature measuring touch sensors 1 transmit the measured temperature information back to the wireless temperature controller in real time in the form of radio waves. The local controller reads the temperature information collected by the wireless temperature controller in real time, and transmits the information to the energy management system and the battery management system through the switch.

[0037] Embodiment 3, based on the above embodiment, Figures 1 to 4As shown, this embodiment provides an energy storage system, which includes: an energy storage cabinet, an energy management system and a battery management system as provided in Example 2; wherein the energy management system and the battery management system are electrically connected to the switch in the energy storage cabinet.

[0038] In order to realize intelligent temperature control, the wireless temperature controller in the energy storage cabinet sets a first temperature value and a second temperature value, and the wireless temperature controller compares the temperature information collected by each wireless temperature measuring unit with the first temperature value and the second temperature value.

[0039] Specifically, the first temperature value is 70 degrees Celsius, and the second temperature value is 90 degrees Celsius.

[0040] Specifically, when the temperature information collected by any of the wireless temperature measuring units is greater than a first temperature value and less than a second temperature value, the wireless temperature controller sends a high temperature alarm signal to the energy management system and the battery management system through the local controller and the switch.

[0041] In this embodiment, if the temperature does not exceed 90 degrees Celsius, a high temperature alarm signal is issued, and the high temperature alarm signal is uploaded to the local controller. The local controller transmits the high temperature alarm signal to the energy management system and the battery management system through the switch, and both will display a high temperature alarm.

[0042] Specifically, when the temperature information collected by any of the wireless temperature measuring units is greater than the second temperature value, the wireless temperature controller sends an over-temperature shutdown signal to the energy management system and the battery management system through the local controller and the switch.

[0043] In this embodiment, if the temperature exceeds 90 degrees Celsius, an over-temperature shutdown signal will be issued, the local controller will issue a system over-temperature shutdown signal and upload it to the energy management system and the battery management system, and the battery management system will execute the system shutdown command.

[0044] Specifically, after receiving an over-temperature shutdown signal from the energy management system and the battery management system, the battery management system executes a shutdown command.

[0045] To sum up, the utility model can accurately measure the temperature of the cable connector by installing a wireless temperature measuring unit on each cable connector and wirelessly networking the wireless temperature controller with each wireless temperature measuring unit. At the same time, compared with the existing wired temperature detection method inside the battery pack, it can reduce the wiring harness and is convenient and quick to disassemble and assemble.

[0046] All devices (parts without specific structure) selected in this application are universal standard parts or parts known to those skilled in the art, and their structures and principles can be known by those skilled in the art through technical manuals or conventional experimental methods. In addition, the software programs involved in this application are all prior art, and this application does not involve any improvement to the software programs.

[0047] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0049] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0050] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0051] In addition, each functional unit in each embodiment of the present utility model may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0052] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A temperature measuring device, It is characterized in that include: Several wireless temperature measurement units and wireless temperature controllers; in The wireless temperature measuring unit is installed on the cable connector, and the wireless temperature controller is installed in the control cabinet; The wireless temperature measuring unit interacts with the wireless temperature controller via radio waves.

2. The temperature measuring device according to claim 1, It is characterized in that The wireless temperature measurement unit comprises: a passive wireless temperature measurement sensor; The passive wireless temperature measuring sensor is installed on the cable connector to collect temperature information and send it to the wireless temperature controller.

3. The temperature measuring device according to claim 2, It is characterized in that The passive wireless temperature measuring sensor comprises a strap-type wireless temperature measuring sensor.

4. An energy storage cabinet, It is characterized in that include: The temperature measuring device, local controller and switch according to any one of claims 1 to 3; wherein The wireless temperature controller in the temperature measuring device is electrically connected to the local controller, and the local controller is electrically connected to the switch; The local controller is suitable for reading the temperature information collected by the wireless temperature controller, and the local controller transmits the temperature information to the energy management system and the battery management system through the switch.

5. The energy storage cabinet according to claim 4, It is characterized in that Also includes: Several clusters of batteries; A plurality of battery boxes are arranged in each battery cluster, and a wireless temperature measuring unit is arranged on the positive pole and the negative pole of each battery box.

6. An energy storage system, It is characterized in that include: The energy storage cabinet, energy management system and battery management system as claimed in claim 4; in The energy management system and the battery management system are electrically connected to the switch in the energy storage cabinet.

7. The energy storage system according to claim 6, It is characterized in that The wireless temperature controller in the energy storage cabinet sets a first temperature value and a second temperature value, and the wireless temperature controller compares the temperature information collected by each wireless temperature measuring unit with the first temperature value and the second temperature value.

8. The energy storage system according to claim 7, It is characterized in that When the temperature information collected by any of the wireless temperature measuring units is greater than the first temperature value and less than the second temperature value, the wireless temperature controller sends a high temperature alarm signal to the energy management system and the battery management system through the local controller and the switch.

9. The energy storage system according to claim 7, It is characterized in that When the temperature information collected by any of the wireless temperature measuring units is greater than the second temperature value, the wireless temperature controller sends an over-temperature shutdown signal to the energy management system and the battery management system through the local controller and the switch.

10. The energy storage system according to claim 9, It is characterized in that When the over-temperature shutdown signal is received from the energy management system and the battery management system, the battery management system executes the shutdown command.

Images