Battery temperature testing equipment

Abstract

The utility model relates to the technical field of temperature testing, in particular to battery temperature testing equipment. The battery temperature testing equipment comprises a testing host, a carrier plate, a first pipeline, a second pipeline and a temperature compensation device, the carrier plate is used for supporting a battery, the first pipeline is communicated with the testing host and the carrier plate, the second pipeline is communicated with the testing host and the carrier plate, and the testing host has a temperature rising mode and a temperature lowering mode. The refrigerant in the cooling mode sequentially flows through the first pipeline, the carrier plate and the second pipeline from the test host and flows back to the test host, and the refrigerant in the heating mode sequentially flows through the second pipeline, the carrier plate and the first pipeline from the test host and flows back to the test host. The temperature compensation device can cool the refrigerant in the first pipeline in the cooling mode to the preset cooling temperature and heat the refrigerant in the second pipeline in the heating mode to the preset heating temperature, so that the heating precision of the carrier plate is ensured.

Description

Technical Field

[0001] This utility model relates to the field of temperature testing technology, and in particular to battery temperature testing equipment. Background Technology

[0002] The battery temperature testing equipment includes a testing unit, connecting pipes, and a carrier plate. The carrier plate supports the battery, and the connecting pipes connect the testing unit to the carrier plate. A refrigerant circulates between the testing unit and the carrier plate to heat or cool the carrier plate, simulating high or low temperature environments for battery temperature testing. To ensure the accuracy of the battery temperature test, the heating and cooling accuracy of the carrier plate must be guaranteed.

[0003] In related technologies, the connecting pipes between the test host and the carrier board are relatively long, and these pipes exchange heat with the outside environment. When heating the carrier board, the actual heating temperature is lower than the specified heating temperature; when cooling the carrier board, the actual cooling temperature is higher than the specified cooling temperature.

[0004] Therefore, there is an urgent need to invent battery temperature testing equipment to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a battery temperature testing device to achieve heating and cooling of the carrier plate, thereby improving the heating effect and accuracy of the carrier plate, as well as the cooling effect and accuracy of the carrier plate.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Battery temperature testing equipment, including:

[0008] Test host;

[0009] Carrier plate, used to support the battery;

[0010] A first pipeline and a second pipeline are connected. The first pipeline is connected to the test host and the carrier plate, respectively. The second pipeline is connected to the test host and the carrier plate, respectively. The test host has a heating mode and a cooling mode. In the cooling mode, the refrigerant flows from the test host through the first pipeline, the carrier plate, and the second pipeline in sequence and then flows back to the test host. In the heating mode, the refrigerant flows from the test host through the second pipeline, the carrier plate, and the first pipeline in sequence and then flows back to the test host.

[0011] A temperature compensation device is provided, which is capable of cooling the refrigerant in the first pipeline in the cooling mode to a preset cooling temperature, and heating the refrigerant in the second pipeline in the heating mode to a preset heating temperature.

[0012] As an optional solution, the temperature compensation device includes:

[0013] A cooling compensation component is installed on the first pipeline, and the cooling compensation component can cool the refrigerant in the first pipeline to the preset cooling temperature;

[0014] A temperature compensation component, installed on the second pipeline, is capable of heating the refrigerant in the second pipeline to the preset heating temperature; and

[0015] The control unit is communicatively connected to both the cooling compensation unit and the heating compensation unit. The control unit is capable of independently controlling the start and stop of the cooling compensation unit and the start and stop of the heating compensation unit.

[0016] As an optional solution, the temperature compensation device further includes:

[0017] A first detection component is disposed on the first pipeline. The first detection component is communicatively connected to the control component. The first detection component is capable of detecting the temperature and pressure of the refrigerant in the first pipeline.

[0018] The second detection component is installed on the second pipeline. The second detection component is communicatively connected to the control component. The second detection component is capable of detecting the temperature and pressure of the refrigerant in the second pipeline.

[0019] As an optional solution, the battery temperature testing equipment also includes:

[0020] A throttle valve is installed in the first pipeline, and the throttle valve can control the flow rate of the refrigerant in the first pipeline;

[0021] The first pipeline includes a first part located between the throttle valve and the test host and a second part located between the throttle valve and the carrier plate. The first detection component and the cooling compensation component are both disposed in the first part.

[0022] As an optional solution, the temperature compensation device further includes:

[0023] A third detection component is disposed in the second part and is communicatively connected to the control component. The third detection component is capable of detecting the temperature and pressure of the refrigerant in the second part.

[0024] As an optional solution, the first detection component includes:

[0025] A first temperature sensor is disposed on the first part, and the first temperature sensor is communicatively connected to the control component. The first temperature sensor is used to detect the temperature of the refrigerant within the first part.

[0026] A first pressure sensor is disposed on the first part. The first pressure sensor and the first temperature sensor are arranged sequentially along the axial direction of the first part. The first pressure sensor is communicatively connected to the control component. The first pressure sensor is used to detect the pressure of the refrigerant in the first part.

[0027] As an optional solution, the length of the first pipeline between the cooling compensation component and the carrier plate is no more than 1 meter;

[0028] The length of the second pipeline between the heating compensation component and the carrier plate is no more than 1 meter.

[0029] As an optional solution, the test host is provided with a first connector and a second connector, and the carrier plate is provided with a third connector and a fourth connector. The two ends of the first pipeline are respectively sealed and connected to the first connector and the third connector, and the two ends of the second pipeline are respectively sealed and connected to the second connector and the fourth connector.

[0030] As an optional solution, the battery temperature testing equipment also includes:

[0031] A protective shell is provided around the temperature compensation device, and the first pipeline and the second pipeline pass through the protective shell respectively.

[0032] As an optional solution, the outer peripheral wall of the first pipeline along the axial direction is wrapped with thermal insulation cotton;

[0033] The outer circumferential wall of the second pipeline is wrapped with thermal insulation cotton along the axial direction.

[0034] The beneficial effects of this utility model are:

[0035] The battery temperature testing device provided by this utility model uses a first pipe to connect the test host and the carrier plate, and a second pipe to connect the test host and the carrier plate. When the test host is in cooling mode, the refrigerant can flow from the test host through the first pipe, the carrier plate, and the second pipe in sequence and then return to the test host to complete the cooling of the carrier plate. When the test host is in heating mode, the refrigerant can flow from the test host through the second pipe, the carrier plate, and the first pipe in sequence and then return to the test host to complete the heating of the carrier plate, thus meeting the requirements for battery temperature testing. By using a temperature compensation device to cool the refrigerant in the first pipe in cooling mode to a preset cooling temperature, the refrigerant can enter the carrier plate along the first pipe at the preset cooling temperature in cooling mode, ensuring the cooling effect and cooling accuracy of the carrier plate. By using a temperature compensation device to heat the refrigerant in the second pipe in heating mode to a preset heating temperature, the refrigerant can enter the carrier plate along the second pipe at the preset heating temperature in heating mode, ensuring the heating effect and heating accuracy of the carrier plate. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the battery temperature testing device provided in an embodiment of the present invention.

[0037] In the picture:

[0038] 100. Temperature compensation device; 110. Cooling compensation component; 120. Heating compensation component; 130. First detection assembly; 131. First temperature detection component; 132. First pressure detection component; 140. Second detection assembly; 141. Second temperature detection component; 142. Second pressure detection component; 150. Third detection assembly; 151. Third temperature detection component; 152. Third pressure detection component;

[0039] 200, First pipeline; 210, First section; 220, Second section;

[0040] 300. Second pipeline;

[0041] 400. Test host; 410. First connector; 420. Second connector;

[0042] 500, Carrier plate; 510, Third connector; 520, Fourth connector;

[0043] 600. Throttling valve;

[0044] 700. Protective case. Detailed Implementation

[0045] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0046] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0047] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0048] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0049] The battery temperature testing equipment includes a main unit, connecting pipes, and a carrier plate. The carrier plate supports the battery, and the connecting pipes connect the main unit and the carrier plate. A refrigerant circulates between the main unit and the carrier plate to heat or cool the carrier plate, simulating high or low temperature environments for battery temperature testing. To ensure the accuracy of the battery temperature test, the heating and cooling accuracy of the carrier plate must be guaranteed. However, the connecting pipes between the main unit and the carrier plate are relatively long, and heat exchange occurs between these pipes and the external environment. When heating the carrier plate, the actual heating temperature is lower than the specified heating temperature; conversely, when cooling the carrier plate, the actual cooling temperature is higher than the specified cooling temperature.

[0050] To solve the above problems, such as Figure 1 As shown, this embodiment provides a battery temperature testing device. The battery temperature testing equipment includes a testing host 400, a carrier plate 500, a first pipeline 200, a second pipeline 300, and a temperature compensation device 100. The carrier plate 500 supports the battery. The first pipeline 200 connects to both the testing host 400 and the carrier plate 500. The second pipeline 300 also connects to both the testing host 400 and the carrier plate 500. The testing host 400 has a heating mode and a cooling mode. In the cooling mode, the refrigerant flows from the testing host 400 through the first pipeline 200, the carrier plate 500, and the second pipeline 300, and then back to the testing host 400. In the heating mode, the refrigerant flows from the testing host 400 through the second pipeline 300, the carrier plate 500, and the first pipeline 200, and then back to the testing host 400. The temperature compensation device 100 can cool the refrigerant in the first pipeline 200 in the cooling mode to a preset cooling temperature and heat the refrigerant in the second pipeline 300 in the heating mode to a preset heating temperature.

[0051] The battery temperature testing device connects the test host 400 and the carrier plate 500 via a first pipe 200 and a second pipe 300. When the test host 400 is in cooling mode, the refrigerant flows from the test host 400 through the first pipe 200, the carrier plate 500, and the second pipe 300 before returning to the test host 400, thus cooling the carrier plate 500. When the test host 400 is in heating mode, the refrigerant flows from the test host 400 through the second pipe 300, the carrier plate 500, and the first pipe 200 before returning to the test host 400, thus cooling the carrier plate 500. The heating of 500 meets the requirements for temperature testing of the battery. By using the temperature compensation device 100 to cool the refrigerant in the first pipe 200 in the cooling mode to the preset cooling temperature, the refrigerant can enter the carrier plate 500 along the first pipe 200 at the preset cooling temperature in the cooling mode, ensuring the cooling effect and cooling accuracy of the carrier plate 500. By using the temperature compensation device 100 to heat the refrigerant in the second pipe 300 in the heating mode to the preset heating temperature, the refrigerant can enter the carrier plate 500 along the second pipe 300 at the preset heating temperature in the heating mode, ensuring the heating effect and heating accuracy of the carrier plate 500.

[0052] It should be noted that the specific structure and working principle of the test host 400 and the carrier board 500 are existing technologies, and will not be elaborated upon here for the sake of brevity. Furthermore, the specific values ​​of the preset cooling temperature and preset heating temperature can be adjusted according to actual needs, and this embodiment does not impose specific limitations.

[0053] As an optional solution, the temperature compensation device 100 includes a cooling compensation component 110, a heating compensation component 120, and a control component (not shown in the figure). The cooling compensation component 110 is installed on the first pipeline 200 and can cool the refrigerant in the first pipeline 200 to a preset cooling temperature. The heating compensation component 120 is installed on the second pipeline 300 and can heat the refrigerant in the second pipeline 300 to a preset heating temperature. The control component is communicatively connected to the cooling compensation component 110 and the heating compensation component 120 respectively, and can independently control the start and stop of the cooling compensation component 110 and the heating compensation component 120. By installing a cooling compensation component 110 on the first pipeline 200 and communicating with the control unit, when the refrigerant in cooling mode flows into the carrier plate 500 along the first pipeline 200, the control unit controls the cooling compensation component 110 to start. The cooling compensation component 110 can cool and compensate the refrigerant as it flows into the carrier plate 500 along the first pipeline 200, so that the refrigerant enters the carrier plate 500 at a preset cooling temperature. By installing a heating compensation component 120 on the second pipeline 300 and communicating with the control unit, when the refrigerant in heating mode flows into the carrier plate 500 along the second pipeline 300, the control unit controls the heating compensation component 120 to start. The heating compensation component 120 can heat and compensate the refrigerant as it flows into the carrier plate 500 along the second pipeline 300, so that the refrigerant enters the carrier plate 500 at a preset heating temperature.

[0054] It should be noted that the cooling compensation component 110 is an existing cooling structure, and the heating compensation component 120 is an existing heating structure. The specific structure of the cooling compensation component 110 and the heating compensation component 120 will not be described in this embodiment.

[0055] Furthermore, through repeated experiments during actual operation, the following conclusion was reached: the temperature rise of the refrigerant in cooling mode during its flow from the test host 400 into the carrier plate 500 is negligible. Therefore, in actual operation, to simplify the complexity of the battery temperature testing equipment, the cooling compensation component 110 within the temperature compensation device 100 can be removed, and only the heating compensation component 120 can be installed within the temperature compensation device 100. However, if higher cooling accuracy is required for the carrier plate 500, the cooling compensation component 110 should be included within the temperature compensation device 100.

[0056] In an optional embodiment, the temperature compensation device 100 further includes a first detection component 130 and a second detection component 140. The first detection component 130 is disposed on the first pipeline 200 and is communicatively connected to the control component. The first detection component 130 is capable of detecting the temperature and pressure of the refrigerant in the first pipeline 200. The second detection component 140 is disposed on the second pipeline 300 and is communicatively connected to the control component. The second detection component 140 is capable of detecting the temperature and pressure of the refrigerant in the second pipeline 300. When the first detection component 130 detects that the temperature of the refrigerant in the first pipeline 200 is higher than the preset cooling temperature in the cooling mode, the first detection component 130 transmits the detection information to the control component. The control component activates the cooling compensation component 110 according to the detection information, and the cooling compensation component 110 cools and compensates the refrigerant in the first pipeline 200. When the temperature of the refrigerant in the first pipeline 200 reaches the preset cooling temperature, the first detection component 130 transmits the detection information to the control component, and the control component shuts down the cooling compensation component 110 according to the detection information. When the second detection component 140 detects that the temperature of the refrigerant in the second pipeline 300 is lower than the preset heating temperature in the heating mode, the second detection component 140 transmits the detection information to the control component. The control component activates the heating compensation component 120 according to the detection information, and the heating compensation component 120 compensates for the temperature of the refrigerant in the second pipeline 300. When the temperature of the refrigerant in the second pipeline 300 reaches the preset heating temperature, the second detection component 140 transmits the detection information to the control component, and the control component shuts down the heating compensation component 120 according to the detection information.

[0057] To facilitate control of refrigerant transfer efficiency, the battery temperature testing equipment also includes a throttle valve 600. The throttle valve 600 is installed in the first pipeline 200 and can control the flow rate of refrigerant in the first pipeline 200. The first pipeline 200 includes a first part 210 located between the throttle valve 600 and the test host 400 and a second part 220 located between the throttle valve 600 and the carrier plate 500. The first detection component 130 and the cooling compensation component 110 are both installed in the first part 210.

[0058] In actual operation, to further verify the cooling or heating effect of the refrigerant on the carrier plate 500, it is necessary to calculate the heat exchange of the refrigerant based on its temperature and pressure. When the refrigerant is in cooling mode, the refrigerant in the first section 210 is in a subcooled state, the refrigerant in the second section 220 after passing through the throttle valve 600 along the first section 210 is in a two-phase state, and the refrigerant in the second pipeline 300 after passing through the carrier plate 500 along the second section 220 is in a superheated state. Since the enthalpy value of the refrigerant in the superheated and subcooled states is unique under a given pressure, when the refrigerant is in cooling mode, the heat exchange of the refrigerant can be calculated based on the pressure detection information of the first detection component 130 corresponding to the first section 210 and the second detection component 140 corresponding to the second pipeline 300, so as to accurately obtain the heat exchange of the refrigerant.

[0059] When the refrigerant is in heating mode, the refrigerant in the second pipe 300 is in a superheated state, the refrigerant in the second section 220 after passing through the carrier plate 500 along the second pipe 300 is in a subcooled state, and the refrigerant in the first section 210 after passing through the throttle valve 600 along the second section 220 is in a two-phase state. At this time, it is impossible to calculate the heat exchange of the refrigerant based on the detection information of the first detection component 130 corresponding to the first section 210 and the second detection component 140 corresponding to the second pipe 300.

[0060] To address the aforementioned issues, the temperature compensation device 100 further includes a third detection component 150. This third detection component 150 is disposed in the second part 220 and is communicatively connected to the control unit. The third detection component 150 can detect the temperature and pressure of the refrigerant within the second part 220. By additionally equipping the temperature compensation device 100 with the third detection component 150, and utilizing its detection of the refrigerant's temperature and pressure within the second part 220, the heat exchange capacity of the refrigerant can be determined based on the detection information from the second detection component 140 and the third detection component 150 even when the refrigerant is in heating mode.

[0061] In this embodiment, the first detection component 130 includes a first temperature detection element 131 and a first pressure detection element 132. The first temperature detection element 131 is disposed on the first part 210 and is communicatively connected to a control element. The first temperature detection element 131 is used to detect the temperature of the refrigerant inside the first part 210. The first pressure detection element 132 is disposed on the first part 210, and the first temperature detection element 131 and the first pressure detection element 132 are arranged sequentially along the axial direction of the first part 210. The first pressure detection element 132 is communicatively connected to the control element and is used to detect the pressure of the refrigerant inside the first part 210. By disposing the first temperature detection element 131 and the first pressure detection element 132 within the first detection component 130 along the axial direction of the first part 210, the temperature and pressure of the refrigerant inside the first part 210 can be detected. It should be noted that the first temperature detection element 131 is a thermometer, and the first pressure detection element 132 is a pressure gauge. Thermometers and pressure gauges are existing technologies and will not be discussed further here.

[0062] Furthermore, the second detection component 140 includes a second temperature detection element 141 and a second pressure detection element 142, and the third detection component 150 includes a third temperature detection element 151 and a third pressure detection element 152. The structures within the second detection component 140 and the third detection component 150 are identical; for the sake of brevity, the specific structures of the second detection component 140 and the third detection component 150 will not be described in detail here.

[0063] Understandably, due to the presence of the first detection component 130, the second detection component 140, and the third detection component 150, in actual operation, there is no need to equip additional pressure taps to connect with the first pipeline 200 and the second pipeline 300 for pressure testing, which reduces the difficulty of pressure testing and avoids refrigerant leakage from the location where the pressure taps are connected.

[0064] Because there is a second part 220 and a portion of the first part 210 between the cooling compensation component 110 and the carrier plate 500, when the refrigerant, after being cooled by the cooling compensation component 110, passes through the portion of the first part 210 and the second part 220 between the cooling compensation component 110 and the carrier plate 500, the refrigerant will reabsorb heat from the outside, resulting in the actual cooling temperature of the carrier plate 500 by the refrigerant being higher than the preset cooling temperature. Because there is a portion of the second pipe 300 between the heating compensation component 120 and the carrier plate 500, when the refrigerant, after being heated by the heating compensation component 120, passes through the portion of the second pipe 300 located between the heating compensation component 120 and the carrier plate 500, the refrigerant will retransfer heat to the outside, resulting in the actual heating temperature of the carrier plate 500 by the refrigerant being lower than the preset heating temperature. To ensure the cooling and heating accuracy of the refrigerant, the combined length of the second part 220 and a portion of the first part 210 between the cooling compensation component 110 and the carrier plate 500 is no greater than 1 meter. When the refrigerant is in cooling mode, the temperature rise caused by the refrigerant flowing through the second part 220 and the portion of the first part 210 (no more than 1 meter) is negligible, so that the actual cooling temperature of the refrigerant on the carrier plate 500 is the preset cooling temperature. Similarly, the length of the second pipe 300 between the heating compensation component 120 and the carrier plate 500 is no greater than 1 meter. When the refrigerant is in heating mode, the temperature drop caused by the refrigerant flowing through the second pipe 300 (no more than 1 meter) is negligible, so that the actual heating temperature of the refrigerant on the carrier plate 500 is the preset heating temperature.

[0065] It should be noted that, in this embodiment, the sum of the lengths of the second part 220 and the portion of the first part 210 located between the cooling compensation component 110 and the carrier plate 500 is 0.8 meters, and the length of the portion of the second pipeline 300 located between the heating compensation component 120 and the carrier plate 500 is 0.8 meters. In other embodiments, the total length of the second part 220 and the portion of the first part 210 located between the cooling compensation component 110 and the carrier plate 500, as well as the length of the portion of the second pipeline 300 located between the heating compensation component 120 and the carrier plate 500, can be adjusted within a range not exceeding 1 meter according to actual needs. This embodiment does not impose specific limitations on this.

[0066] Furthermore, to further prevent heat exchange between the first pipe 200 and the outside environment, and to prevent heat exchange between the second pipe 300 and the outside environment, the outer peripheral walls of the first pipe 200 and the second pipe 300 are wrapped with insulating cotton along their axial directions. By wrapping the outer peripheral walls of the first pipe 200 and the second pipe 300 along their axial directions with insulating cotton, respectively, the insulating properties of the insulating cotton are used to isolate the first pipe 200 and the second pipe 300 from the outside environment, thereby achieving the purpose of preventing heat exchange between the first pipe 200 and the outside environment, and preventing heat exchange between the second pipe 300 and the outside environment. It should be noted that in other embodiments, insulating cotton may only be wrapped around the outer peripheral walls of the first pipe 200 along its axial direction, or only around the outer peripheral walls of the second pipe 300 along its axial direction; this embodiment does not impose a specific limitation.

[0067] As an optional solution, the battery temperature testing equipment also includes a protective shell 700, which covers the outer periphery of the temperature compensation device 100. The first conduit 200 and the second conduit 300 respectively pass through the protective shell 700. By setting the protective shell 700 to cover the outer periphery of the temperature compensation device 100 and allowing the first conduit 200 and the second conduit 300 to pass through the protective shell 700, the protection of the temperature compensation device 100 can be improved while ensuring that the first conduit 200 and the second conduit 300 can be normally connected to the test host 400 and the carrier board 500. It should be noted that, in this embodiment, a snap-fit ​​component is provided in the receiving cavity of the protective shell 700. The snap-fit ​​component snaps and fixes the cooling compensation component 110, the heating compensation component 120, the first detection component 130, the second detection component 140, and the third detection component 150 in the receiving cavity, so as to further improve the protection of the cooling compensation component 110, the heating compensation component 120, the first detection component 130, the second detection component 140, and the third detection component 150.

[0068] In some embodiments, the test host 400 is provided with a first connector 410 and a second connector 420, and the carrier plate 500 is provided with a third connector 510 and a fourth connector 520. The end of the first part 210 in the first pipeline 200, axially away from the second part 220, is sealed to the first connector 410. The end of the second part 220 in the first pipeline 200, axially away from the first part 210, is sealed to the third connector 510. Both ends of the second pipeline 300 are sealed to the second connector 420 and the fourth connector 520, respectively, to ensure a good sealing effect between the test host 400, the first pipeline 200, the second pipeline 300, and the carrier plate 500, and to prevent refrigerant leakage. It should be noted that in this embodiment, the first connector 410, the second connector 420, the third connector 510, and the fourth connector 520 are all flange-type sealing joints. Flange-type sealing joints have a larger sealing surface, can withstand higher pressure and temperature, and are easy to install and maintain. The specific structure and working principle of flange-type sealing joints are existing technologies and will not be described in detail here.

[0069] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A battery temperature testing device, characterized in that, include: Test host (400); Carrier plate (500) is used to support the battery; A first pipe (200) and a second pipe (300) are connected. The first pipe (200) is connected to the test host (400) and the carrier plate (500) respectively. The second pipe (300) is connected to the test host (400) and the carrier plate (500) respectively. The test host (400) has a heating mode and a cooling mode. In the cooling mode, the refrigerant flows from the test host (400) through the first pipe (200), the carrier plate (500), and the second pipe (300) in sequence and then flows back to the test host (400). In the heating mode, the refrigerant flows from the test host (400) through the second pipe (300), the carrier plate (500), and the first pipe (200) in sequence and then flows back to the test host (400). A temperature compensation device (100) is provided, which is capable of cooling the refrigerant in the first pipeline (200) in the cooling mode to a preset cooling temperature, and heating the refrigerant in the second pipeline (300) in the heating mode to a preset heating temperature.

2. The battery temperature testing device according to claim 1, characterized in that, The temperature compensation device (100) includes: A cooling compensation component (110) is installed on the first pipeline (200), and the cooling compensation component (110) can cool the refrigerant in the first pipeline (200) to the preset cooling temperature; A heating compensation component (120) is disposed on the second pipeline (300), the heating compensation component (120) being capable of heating the refrigerant in the second pipeline (300) to the preset heating temperature; and The control unit is communicatively connected to the cooling compensation unit (110) and the heating compensation unit (120), and the control unit is capable of independently controlling the start and stop of the cooling compensation unit (110) and independently controlling the start and stop of the heating compensation unit (120).

3. The battery temperature testing device according to claim 2, characterized in that, The temperature compensation device (100) further includes: A first detection component (130) is disposed on the first pipeline (200), and the first detection component (130) is communicatively connected to the control component. The first detection component (130) is capable of detecting the temperature and pressure of the refrigerant in the first pipeline (200); and The second detection component (140) is disposed on the second pipeline (300). The second detection component (140) is communicatively connected to the control component. The second detection component (140) is capable of detecting the temperature and pressure of the refrigerant in the second pipeline (300).

4. The battery temperature testing device according to claim 3, characterized in that, The battery temperature testing equipment also includes: A throttle valve (600) is installed in the first pipeline (200), and the throttle valve (600) can control the flow rate of the refrigerant in the first pipeline (200); The first pipeline (200) includes a first part (210) located between the throttle valve (600) and the test host (400) and a second part (220) located between the throttle valve (600) and the carrier plate (500). The first detection component (130) and the cooling compensation component (110) are both disposed in the first part (210).

5. The battery temperature testing device according to claim 4, characterized in that, The temperature compensation device (100) further includes: A third detection component (150) is disposed in the second part (220). The third detection component (150) is communicatively connected to the control unit. The third detection component (150) is capable of detecting the temperature and pressure of the refrigerant in the second part (220).

6. The battery temperature testing device according to claim 4, characterized in that, The first detection component (130) includes: A first temperature sensor (131) is disposed on the first part (210), and the first temperature sensor (131) is communicatively connected to the control unit. The first temperature sensor (131) is used to detect the temperature of the refrigerant in the first part (210); and A first pressure detection element (132) is disposed on the first part (210). The first pressure detection element (132) and the first temperature detection element (131) are arranged sequentially along the axial direction of the first part (210). The first pressure detection element (132) is communicatively connected to the control element. The first pressure detection element (132) is used to detect the pressure of the refrigerant in the first part (210).

7. The battery temperature testing device according to claim 2, characterized in that, The length of the first pipeline (200) between the cooling compensation component (110) and the carrier plate (500) is no more than 1 meter; The length of the second pipeline (300) between the heating compensation component (120) and the carrier plate (500) is no more than 1 meter.

8. The battery temperature testing device according to any one of claims 1 to 7, characterized in that, The test host (400) is provided with a first connector (410) and a second connector (420), and the carrier plate (500) is provided with a third connector (510) and a fourth connector (520). The two ends of the first pipeline (200) are respectively sealed and connected to the first connector (410) and the third connector (510), and the two ends of the second pipeline (300) are respectively sealed and connected to the second connector (420) and the fourth connector (520).

9. The battery temperature testing device according to any one of claims 1 to 7, characterized in that, The battery temperature testing equipment also includes: A protective shell (700) is provided on the outer periphery of the temperature compensation device (100), and the first pipeline (200) and the second pipeline (300) pass through the protective shell (700).

10. The battery temperature testing device according to any one of claims 1 to 7, characterized in that, The outer peripheral wall of the first pipeline (200) along the axial direction is wrapped with thermal insulation cotton; The outer peripheral wall of the second pipeline (300) along the axial direction is wrapped with thermal insulation cotton.

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