Constant-temperature negative pressure integrated charging and discharging equipment

Abstract

The application discloses a constant-temperature negative-pressure integrated charging and discharging equipment, which comprises a shell, a charging and discharging mechanism, a control system and the like. The charging and discharging mechanism comprises a moving mechanism frame, an upper lifting and lowering mechanism arranged in the moving mechanism frame, a lower lifting and lowering mechanism, an integrated negative-pressure integrated component and a charging and discharging integrated needle plate component. The upper lifting and lowering mechanism is connected with the integrated negative-pressure integrated component and is used for controlling the lifting and lowering movement of the integrated negative-pressure integrated component. The lower lifting and lowering mechanism is connected with the charging and discharging integrated needle plate component and is used for controlling the lifting and lowering movement of the charging and discharging integrated needle plate component. The constant-temperature mechanism comprises an integrated water cooling mechanism, an inner heat exchange mechanism and a circulating air mechanism. The control system is electrically connected with the PWM circuit and the circulating air mechanism and is used for controlling the operation of the circulating air mechanism. The application can systematically adjust the ambient temperature, can automatically detect the current battery model through a height detection sensor and can drive the integrated negative-pressure integrated component to the limiting column position corresponding to the battery model through an automatic changing mechanism.

Description

Technical Field

[0001] This invention belongs to the technical field of lithium battery multi-channel formation and capacity testing equipment, specifically relating to a constant temperature negative pressure integrated charging and discharging device. Background Technology

[0002] The constant temperature negative pressure integrated charging and discharging equipment utilizes a temperature control system integrating a water cooling system and a heating system to control the temperature of the charging and discharging equipment, thereby ensuring that the temperature rise and temperature uniformity of the multi-channel batteries within the charging and discharging equipment meet the corresponding technical specifications. However, conventional charging and discharging equipment currently cannot precisely control the ambient temperature of the equipment, which may result in the inability to meet the corresponding technical specifications. Specifically, it has the following defects:

[0003] (i) It is impossible to control the ambient temperature of the charging and discharging chamber of the equipment to the set value during the charging and discharging process, that is, it is impossible to guarantee constant temperature. The battery temperature can only be controlled by the self-heating generated in the battery process and the water cooling system during the charging and discharging process, which leads to large fluctuations in ambient temperature. This will increase the uncertainty in the charging and discharging process and affect the accuracy of experimental control.

[0004] (ii) The battery temperature uniformity cannot be precisely controlled, that is, the overall ambient temperature inside the charging and discharging chamber cannot be controlled, resulting in the temperature difference of the batteries in the battery tray failing to meet the temperature uniformity requirements.

[0005] (iii) Incompatible with different battery models. When different battery models are required for charge and discharge testing, the current equipment structure cannot meet the current requirements. The structural design must be changed and the charge and discharge chamber must be rearranged, which introduces design risks. Summary of the Invention

[0006] To address the technical shortcomings of existing conventional charging and discharging equipment, such as the inability to precisely control the ambient temperature, which may lead to the inability to meet relevant technical specifications, this invention provides a constant temperature negative pressure integrated charging and discharging device that can precisely adjust battery temperature uniformity and adapt to different batteries.

[0007] The technical solution adopted in this invention is:

[0008] A constant temperature negative pressure integrated charging and discharging device, characterized in that it comprises:

[0009] The outer shell (1) is provided with a charging and discharging cavity (11) and a heat exchange cavity (12), and the charging and discharging cavity (11) and the heat exchange cavity (12) are interconnected;

[0010] The charging and discharging mechanism (2) is disposed in the charging and discharging cavity (11) and includes a motion mechanism frame, an upper lifting mechanism (211), a lower lifting mechanism (212) disposed inside the motion mechanism frame, an integrated negative pressure assembly (214), and a charging and discharging integrated needle plate assembly (215); the upper lifting mechanism (211) is connected to the integrated negative pressure assembly (214) and is used to control the lifting and lowering movement of the integrated negative pressure assembly (214); the lower lifting mechanism (212) is connected to the charging and discharging integrated needle plate assembly (215) and is used to control the lifting and lowering movement of the charging and discharging integrated needle plate assembly (215); the area between the integrated negative pressure assembly and the charging and discharging integrated needle plate assembly is defined as the detection area;

[0011] The constant temperature mechanism (3) is set in the heat exchange chamber (12) and includes an integrated water cooling mechanism (31), an internal heat exchange mechanism (32) and a circulating air mechanism (33). The integrated water cooling mechanism includes a compressor (311), an electric control valve and a condenser. The cold water outlet of the integrated water cooling mechanism (31) is connected in sequence to the electric control valve and the cold water inlet of the internal heat exchange mechanism (32). The hot water inlet of the integrated water cooling mechanism (31) is connected to the hot water outlet pipeline of the internal heat exchange mechanism (32).

[0012] The control system (4) is located on the outer shell (1) on the right side of the charging and discharging chamber. The signal input terminal of the control system (4) is electrically connected to the signal output terminal of the temperature probe. The signal output terminal of the control system (4) is electrically connected to the control terminal of the electric control valve. It is used to control the flow rate of the cooling water provided by the integrated water cooling mechanism. The signal interaction port of the control system (4) is connected to the signal interaction port of the integrated water cooling mechanism. It is used to control the temperature of the cooling water provided by the integrated water cooling mechanism. The control system (4) is electrically connected to the circulating air mechanism (33) through the PWM circuit. It is used to control the operation of the circulating air mechanism.

[0013] The power supply (5) is located on the outer shell (upper) on the right side of the charging and discharging chamber. The power supply (5) is electrically connected to the upper lifting mechanism (211), the lower lifting mechanism (212), the internal heat exchange mechanism (32), the circulating air mechanism (33), and the control system (4) respectively, and is used to provide the necessary power for the normal operation of the constant temperature negative pressure integrated charging and discharging equipment.

[0014] Furthermore, the motion mechanism frame includes a top square tube frame (22) and a bottom square tube frame (23). In the area between the top square tube frame (22) and the bottom square tube frame (23), an integrated negative pressure integrated component (214), a battery tray fixing component (213), and a charging and discharging integrated needle plate component (215) are arranged sequentially from top to bottom. The integrated negative pressure integrated component (214), the battery tray fixing component (213), and the charging and discharging integrated needle plate component (215) are arranged in parallel and spaced apart. The integrated negative pressure integrated component (214) and the charging and discharging integrated needle plate component (215) can be freely raised and lowered under the drive of the upper lifting mechanism (211) and the lower lifting mechanism (212), respectively.

[0015] Four guide shafts (218) are provided between the top square tube frame (22) and the bottom square tube frame (23) of the mechanism. The two ends of the guide shafts (218) are respectively fixed on the lower surface of the top square tube frame (22) and the upper surface of the bottom square tube frame (23). The four guide shafts (218) are arranged in pairs on both sides of the top square tube frame (22) and the bottom square tube frame (23).

[0016] Furthermore, the integrated negative pressure assembly (214) includes a negative pressure plate, the integrated charging and discharging needle plate assembly (215) includes a needle plate base plate, the guide shaft passes through the negative pressure plate and the needle plate base plate, and the negative pressure plate and the needle plate base plate can move up and down along the guide shaft respectively.

[0017] Furthermore, linear bearings (217) are respectively provided on the negative pressure plate and the needle plate base plate at the positions corresponding to the guide shaft (218) to limit the guide shaft passing through the linear bearing (217).

[0018] Furthermore, an exhaust fan (333) is provided at the bottom of the needle plate base, an intake fan (334) is provided at the end of the needle plate base, and a transverse fan (335) is provided on the battery tray fixing assembly (213) to accelerate the air flow in the constant temperature chamber and improve the temperature uniformity and stability in the chamber.

[0019] Furthermore, the circulating air mechanism (33) includes a supply fan (332) and a circulating fan (331), both of which are electrically connected to the control system (4) via a PWM circuit;

[0020] The air supply fan is located on the inner side plate of the charging and discharging cavity adjacent to the heat exchange cavity, and the air supply fan is located at the air outlet of the heat exchange cavity. The circulating fan (331) is located at the bottom, tail and right rear of the needle plate bottom plate, and is used to regulate the heat generated during the charging and discharging of the battery and the heat generated by the drive board.

[0021] Furthermore, the internal heat exchange mechanism (32) includes a finned heat exchanger (321) and a heating tube (322). The finned heat exchanger (321) includes a fin group and a heat exchange tube inserted in the fin group. The fin group includes several fins that are parallel to each other and spaced apart. The heat exchange tube is repeatedly bent and inserted into each fin of the fin group. The two ends of the heat exchange tube are respectively connected to a cold water inlet pipe and a hot water outlet pipe. The cold water inlet of the cold water inlet pipe and the hot water outlet of the hot water outlet pipe are located on the same side of the finned heat exchanger. The cold water inlet is connected to the cold water outlet of the electric control valve and the compressor through a water supply pipe. The hot water outlet is connected to the hot water inlet of the compressor through a return pipe. The heating tube (322) is located in the cavity of the internal heat exchange mechanism. The signal interaction port of the control system is connected to the signal interaction port of the heating tube (322) to control the temperature of the heating tube in the internal heat exchange mechanism.

[0022] Furthermore, the automatic type-changing mechanism (216) includes an automatic moving mechanism (2161) and a limiting post assembly (2162), wherein:

[0023] The automatic moving mechanism (2161) is installed on the integrated negative pressure assembly (214) and consists of two sets of cylinders and a set of linear modules. It realizes the automatic movement of the upper limit column of the integrated negative pressure assembly through horizontal movement.

[0024] The limiting post assembly (2162) is disposed on the upper surface of the battery tray fixing assembly (213) and includes four second limiting posts of different lengths to limit the lowest position of the integrated negative pressure assembly in the charging and discharging mechanism. The four second limiting posts of different lengths correspond to four different battery heights.

[0025] Furthermore, the automatic changing mechanism (216) also includes a first limiting post, which corresponds to the limiting post assembly on the battery tray fixing assembly.

[0026] The circulating air mechanism of this invention works as follows: the circulating air mechanism maintains the temperature uniformity and stability within the charging and discharging chamber; the finned heat exchanger lowers the circulating air temperature, and the heating tube raises the circulating air temperature. After the circulating air passes through the finned heat exchanger and heating tube sequentially to reach the designated temperature, it is blown into the charging and discharging chamber by a blower through the air outlet on the left side of the heat exchange chamber, regulating the temperature of the charging and discharging chamber and achieving the functions of heating, maintaining a constant temperature, and cooling the charging and discharging chamber. The circulating fan around the charging and discharging mechanism blows the heat generated by the battery and drive board to the left side of the charging and discharging mechanism to the heat exchange chamber, further improving the temperature uniformity and stability within the charging and discharging chamber. After entering the charging and discharging chamber, the circulating air can enter the heat exchange chamber through the air outlet on the left side of the charging and discharging mechanism, thus forming a constant-temperature internal circulation temperature control system for the charging and discharging mechanism.

[0027] The thermostatic mechanism of this invention works as follows: a compressor and a finned heat exchanger are used in combination to achieve a cooling effect, while a heating element achieves a heating effect. Cooling water flows between the compressor and the finned heat exchanger. The compressor lowers the temperature of the cooling water, which is then sent into the finned heat exchanger to absorb heat from the circulating air before returning to the compressor to form a cycle. The circulating air exchanges heat with the finned heat exchanger through the gaps between the fins, thus achieving the effect of hot air being blown in and cold air being blown out. The heating element increases the temperature of the air passing near it, thereby controlling the temperature within the charging / discharging chamber. During heating, the heating element operates independently; just before reaching the designated temperature, the compressor intervenes and assists in regulating the temperature to achieve a constant temperature. During cooling, the compressor operates independently; just before reaching the designated temperature, the heating element intervenes and assists in regulating the temperature to achieve a constant temperature.

[0028] The method for controlling the temperature of a battery using the constant temperature negative pressure integrated charging and discharging device described in this invention is characterized by comprising the following steps:

[0029] Step 1: Start the constant temperature negative pressure integrated charging and discharging equipment, and set the ambient temperature to a specific value through the control system to ensure that each mechanism is in normal working condition.

[0030] Step 2: Place the tray containing the battery on the battery tray fixing assembly of the charging / discharging mechanism. The upward lifting mechanism drives the integrated negative pressure assembly downward until the upper end of the battery in the tray contacts the negative pressure nozzle. The downward lifting mechanism drives the integrated charging / discharging needle plate assembly upward until the lower end of the battery in the tray contacts the charging / discharging probe and temperature probe.

[0031] Step 3: The temperature probe collects battery surface temperature information and ambient temperature information, and transmits the acquired temperature information to the control system. The control system controls the integrated water cooling mechanism, internal heat exchange mechanism and circulating air mechanism to work together to control the temperature of the environment inside the equipment cavity and the battery.

[0032] Furthermore, the control system in step 3, which controls the internal heat exchange mechanism, the integrated water cooling mechanism, and the circulating air mechanism, includes the following steps:

[0033] When the ambient temperature inside the charging / discharging chamber exceeds the set value T℃, the control system operates the electronically controlled valve to increase the flow rate of cooling water through the compressor, thereby enhancing the heat exchange capacity of the finned heat exchanger. It also controls the heating element to reduce its heating capacity, allowing the ambient temperature to quickly stabilize at T℃. Conversely, when the ambient temperature inside the charging / discharging chamber falls below the set value T℃, the control system operates the electronically controlled valve to reduce the flow rate of cooling water through the compressor, thereby decreasing the heat exchange capacity of the finned heat exchanger. It then controls the heating element to increase its heating capacity, allowing the ambient temperature to quickly stabilize at T℃.

[0034] When the ambient temperature inside the charging / discharging chamber exceeds the set value T+2℃, the control system automatically lowers the compressor's cooling water outlet temperature to enhance the heat exchange capacity of the finned heat exchanger. It also controls the heating element to reduce its heating capacity. Conversely, when the ambient temperature inside the charging / discharging chamber falls below the set value T-2℃, the control system automatically raises the compressor's cooling water outlet temperature to reduce the heat exchange capacity of the finned heat exchanger. Finally, it controls the heating element to increase its heating capacity, rapidly stabilizing the ambient temperature to T℃.

[0035] The automatic model change mechanism of this invention is as follows:

[0036] Automatic type changing mechanism:

[0037] The automatic battery switching mechanism is designed to detect the height of the battery on the current tray to determine the battery model, and then switch the mechanism via cylinders to adapt the charging and discharging mechanism to the current battery. The automatic switching mechanism consists of an automatic moving mechanism and a limit post assembly composed of four limit posts of different lengths. The automatic moving mechanism is mounted on the integrated negative pressure assembly and consists of two sets of cylinders, a linear module, and limit posts. It is used to achieve automatic movement of the limit posts on the integrated negative pressure assembly. The limit posts of the automatic moving mechanism correspond to the limit post assembly on the battery tray fixing assembly.

[0038] The method for automatic model changeover using the constant temperature negative pressure integrated charging and discharging device of this invention is characterized by comprising the following steps:

[0039] Step 1: Start the constant temperature negative pressure integrated charging and discharging equipment. Place the tray containing the battery on the battery tray fixing component of the charging and discharging mechanism. Set the current battery model through the control system to make each mechanism work normally.

[0040] Step 2: The control system detects the current battery height on the tray using a height detection sensor to determine the battery model. The automatic battery changing system is then activated, and the control system uses a cylinder to drive the integrated negative pressure assembly to switch to the position of the limit post corresponding to the battery model's height.

[0041] Step 3: The upward lifting mechanism drives the integrated negative pressure assembly downward until the upper end of the battery in the tray contacts the negative pressure nozzle. The downward lifting mechanism drives the integrated charging and discharging needle plate assembly upward until the lower end of the battery in the tray contacts the charging and discharging probe and temperature probe.

[0042] Compared with the prior art, the beneficial effects of the present invention are reflected in:

[0043] (1) The control system of the present invention can collect environmental and battery temperature information through sensors and interact with the constant temperature control system;

[0044] (2) The present invention can systematically adjust the ambient temperature: when the ambient temperature in the charging and discharging chamber is abnormal (the temperature sensor detects that the ambient temperature exceeds T±2℃), the cooling water flow of the compressor can be adjusted by controlling the electronic control valve of the integrated water cooling mechanism, thereby enhancing or weakening the heat exchange capacity of the finned heat exchanger and enhancing or weakening the working power of the heating tube, thereby systematically raising or lowering the ambient temperature in the charging and discharging chamber and stabilizing the uniformity of battery temperature.

[0045] (3) The present invention can quickly and systematically adjust the ambient temperature: when the ambient temperature in the charging and discharging chamber is abnormal (the temperature sensor detects that the ambient temperature exceeds T±2℃), the compressor of the integrated water cooling mechanism can be operated to reduce the cooling water temperature of the compressor, quickly enhance or weaken the heat exchange capacity of the finned heat exchanger, and quickly enhance or weaken the working power of the heating tube, thereby quickly and systematically raising or lowering the ambient temperature in the charging and discharging chamber and stabilizing the uniformity of battery temperature.

[0046] (4) The present invention can automatically detect the current battery model through a height detection sensor and drive the integrated negative pressure component to the limit post position of the corresponding battery model through an automatic switching mechanism, so that the device can perform charge and discharge tests for multiple battery models.

[0047] (5) The present invention has a simple structure, reduces the risk of trial and error, and improves design efficiency. Attached Figure Description

[0048] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0049] Figure 2 yes Figure 1 A schematic diagram of the charging and discharging mechanism.

[0050] Figure 3 This is a schematic diagram of the integrated negative pressure component structure of the present invention.

[0051] Figure 4 This is a schematic diagram of the integrated charging and discharging needle plate assembly structure of the present invention.

[0052] Figure 5 This is a schematic diagram of the tray fixing component structure of the present invention.

[0053] Figure 6 This is a partial structural schematic diagram of the present invention. Detailed Implementation

[0054] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0055] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0056] The present invention will now be described in detail with reference to the accompanying drawings and exemplary embodiments.

[0057] refer to Figures 1 to 6 The present invention provides a constant temperature negative pressure integrated charging and discharging device, comprising:

[0058] The outer casing 1 has a charging / discharging chamber 11 and a heat exchange chamber 12 inside, and the charging / discharging chamber 11 and the heat exchange chamber 12 are interconnected.

[0059] The charging / discharging mechanism 2, disposed in the charging / discharging cavity 11, includes a motion mechanism frame, an upper lifting mechanism 211, a lower lifting mechanism 212 disposed inside the motion mechanism frame, an integrated negative pressure assembly 214, and a charging / discharging integrated needle plate assembly 215; the upper lifting mechanism 211 is connected to the integrated negative pressure assembly 214 and is used to control the lifting and lowering movement of the integrated negative pressure assembly 214; the lower lifting mechanism 212 is connected to the charging / discharging integrated needle plate assembly 215 and is used to control the lifting and lowering movement of the charging / discharging integrated needle plate assembly 215; the area between the integrated negative pressure assembly and the charging / discharging integrated needle plate assembly is defined as the detection area;

[0060] The constant temperature mechanism 3 is located in the heat exchange chamber 12 and includes an integrated water cooling mechanism 31, an internal heat exchange mechanism 32 and a circulating air mechanism 33. The integrated water cooling mechanism includes a compressor 311, an electric control valve and a condenser. The cold water outlet of the integrated water cooling mechanism 31 is connected in sequence to the electric control valve and the cold water inlet of the internal heat exchange mechanism 32. The hot water inlet of the integrated water cooling mechanism 31 is connected to the hot water outlet pipeline of the internal heat exchange mechanism 32.

[0061] The control system 4 is located on the outer shell 1 on the right side of the charging and discharging chamber. The signal input terminal of the control system 4 is electrically connected to the signal output terminal of the temperature probe, and the signal output terminal of the control system 4 is electrically connected to the control terminal of the electric valve. It is used to control the flow rate of the cooling water provided by the integrated water cooling mechanism. The signal interaction port of the control system 4 is connected to the signal interaction port of the integrated water cooling mechanism. It is used to control the temperature of the cooling water provided by the integrated water cooling mechanism. The control system 4 is electrically connected to the circulating air mechanism 33 through a PWM circuit. It is used to control the operation of the circulating air mechanism.

[0062] The power supply 5 is located on the outer shell on the right side of the charging and discharging chamber. The power supply 5 is electrically connected to the upper lifting mechanism 211, the lower lifting mechanism 212, the internal heat exchange mechanism 32, the circulating air mechanism 33, and the control system 4, respectively, and is used to provide the necessary power for the normal operation of the constant temperature negative pressure integrated charging and discharging equipment.

[0063] Furthermore, the motion mechanism frame includes a top square tube frame 22 and a bottom square tube frame 23. In the area between the top square tube frame 22 and the bottom square tube frame 23, an integrated negative pressure integrated component 214, a battery tray fixing component 213, and a charging and discharging integrated needle plate component 215 are arranged sequentially from top to bottom. The integrated negative pressure integrated component 214, the battery tray fixing component 213, and the charging and discharging integrated needle plate component 215 are arranged in parallel and spaced apart. The integrated negative pressure integrated component 214 and the charging and discharging integrated needle plate component 215 can be freely raised and lowered under the drive of the upper lifting mechanism 211 and the lower lifting mechanism 212, respectively.

[0064] Four guide shafts 218 are provided between the top square tube frame 22 and the bottom square tube frame 23 of the mechanism. The two ends of the guide shafts 218 are fixed to the lower surface of the top square tube frame 22 and the upper surface of the bottom square tube frame 23 of the mechanism, respectively. The four guide shafts 218 are arranged in pairs on both sides of the top square tube frame 22 and the bottom square tube frame 23 of the mechanism.

[0065] Furthermore, the integrated negative pressure assembly 214 includes a negative pressure plate, the integrated charging and discharging needle plate assembly 215 includes a needle plate base plate, the guide shaft passes through the negative pressure plate and the needle plate base plate, and the negative pressure plate and the needle plate base plate can move up and down along the guide shaft respectively.

[0066] Furthermore, linear bearings 217 are respectively provided on the negative pressure plate and the needle plate base plate at the positions corresponding to the guide shaft 218, in order to limit the guide shaft passing through the linear bearings 217.

[0067] Furthermore, an exhaust fan 333 is provided at the bottom of the needle plate base, an intake fan 334 is provided at the end of the needle plate base, and a transverse fan 335 is provided on the battery tray fixing assembly 213, in order to accelerate the airflow in the constant temperature chamber and improve the temperature uniformity and stability inside the chamber.

[0068] Furthermore, the circulating air mechanism 33 includes a supply fan 332 and a circulating fan 331, both of which are electrically connected to the control system 4 via a PWM circuit.

[0069] The air supply fan is located on the inner side plate of the charging and discharging chamber, which is adjacent to the heat exchange chamber. The air supply fan is located at the air outlet of the heat exchange chamber. The circulating fan 331 is located at the bottom, tail and right rear of the needle plate base plate, and is used to regulate the heat generated during battery charging and discharging and the heat generated by the drive board.

[0070] Furthermore, the internal heat exchange mechanism 32 includes a finned heat exchanger 321 and a heating tube 322. The finned heat exchanger 321 includes a fin group and a heat exchange tube inserted in the fin group. The fin group includes several parallel and spaced fins. The heat exchange tube is repeatedly and alternately bent and inserted into each fin of the fin group. The two ends of the heat exchange tube are respectively connected to a cold water inlet pipe and a hot water outlet pipe. The cold water inlet of the cold water inlet pipe and the hot water outlet of the hot water outlet pipe are located on the same side of the finned heat exchanger. The cold water inlet is connected to the cold water outlet of the electric control valve and the compressor through a water supply pipe. The hot water outlet is connected to the hot water inlet of the compressor through a return pipe. The heating tube 322 is located in the cavity of the internal heat exchange mechanism. The signal interaction port of the control system is connected to the signal interaction port of the heating tube 322 to control the temperature of the heating tube in the internal heat exchange mechanism.

[0071] Furthermore, the automatic type-changing mechanism 216 includes an automatic moving mechanism 2161 and a limiting post assembly 2162, wherein:

[0072] The automatic moving mechanism 2161 is mounted on the integrated negative pressure assembly 214 and consists of two sets of cylinders and a set of linear modules. It achieves automatic movement of the upper limit column of the integrated negative pressure assembly through horizontal movement.

[0073] The limiting post assembly 2162 is disposed on the upper surface of the battery tray fixing assembly 213, and includes four second limiting posts of different lengths, which are used to limit the lowest position of the integrated negative pressure assembly in the charging and discharging mechanism. The four second limiting posts of different lengths correspond to four different battery heights.

[0074] Furthermore, the automatic changing mechanism 216 also includes a first limiting post, which corresponds to the limiting post assembly on the battery tray fixing assembly.

[0075] The circulating air mechanism of this invention works as follows: the circulating air mechanism maintains the temperature uniformity and stability within the charging and discharging chamber; the finned heat exchanger lowers the circulating air temperature, and the heating tube raises the circulating air temperature. After the circulating air passes through the finned heat exchanger and heating tube sequentially to reach the designated temperature, it is blown into the charging and discharging chamber by a blower through the air outlet on the left side of the heat exchange chamber, regulating the temperature of the charging and discharging chamber and achieving the functions of heating, maintaining a constant temperature, and cooling the charging and discharging chamber. The circulating fan around the charging and discharging mechanism blows the heat generated by the battery and drive board to the left side of the charging and discharging mechanism to the heat exchange chamber, further improving the temperature uniformity and stability within the charging and discharging chamber. After entering the charging and discharging chamber, the circulating air can enter the heat exchange chamber through the air outlet on the left side of the charging and discharging mechanism, thus forming a constant-temperature internal circulation temperature control system for the charging and discharging mechanism.

[0076] The thermostatic mechanism of this invention works as follows: a compressor and a finned heat exchanger are used in combination to achieve a cooling effect, while a heating element achieves a heating effect. Cooling water flows between the compressor and the finned heat exchanger. The compressor lowers the temperature of the cooling water, which is then sent into the finned heat exchanger to absorb heat from the circulating air before returning to the compressor to form a cycle. The circulating air exchanges heat with the finned heat exchanger through the gaps between the fins, thus achieving the effect of hot air being blown in and cold air being blown out. The heating element increases the temperature of the air passing near it, thereby controlling the temperature within the charging / discharging chamber. During heating, the heating element operates independently; just before reaching the designated temperature, the compressor intervenes and assists in regulating the temperature to achieve a constant temperature. During cooling, the compressor operates independently; just before reaching the designated temperature, the heating element intervenes and assists in regulating the temperature to achieve a constant temperature.

[0077] The method for controlling the temperature of a battery using the constant temperature negative pressure integrated charging and discharging device described in this invention is characterized by comprising the following steps:

[0078] Step 1: Start the constant temperature negative pressure integrated charging and discharging equipment, and set the ambient temperature to a specific value through the control system to ensure that each mechanism is in normal working condition.

[0079] Step 2: Place the tray containing the battery on the battery tray fixing assembly of the charging / discharging mechanism. The upward lifting mechanism drives the integrated negative pressure assembly downward until the upper end of the battery in the tray contacts the negative pressure nozzle. The downward lifting mechanism drives the integrated charging / discharging needle plate assembly upward until the lower end of the battery in the tray contacts the charging / discharging probe and temperature probe.

[0080] Step 3: The temperature probe collects battery surface temperature information and ambient temperature information, and transmits the acquired temperature information to the control system. The control system controls the integrated water cooling mechanism, internal heat exchange mechanism and circulating air mechanism to work together to control the temperature of the environment inside the equipment cavity and the battery.

[0081] Furthermore, the control system in step 3, which controls the internal heat exchange mechanism, the integrated water cooling mechanism, and the circulating air mechanism, includes the following steps:

[0082] When the ambient temperature inside the charging / discharging chamber exceeds the set value T℃, the control system operates the electronically controlled valve to increase the flow rate of cooling water through the compressor, thereby enhancing the heat exchange capacity of the finned heat exchanger. It also controls the heating element to reduce its heating capacity, allowing the ambient temperature to quickly stabilize at T℃. Conversely, when the ambient temperature inside the charging / discharging chamber falls below the set value T℃, the control system operates the electronically controlled valve to reduce the flow rate of cooling water through the compressor, thereby decreasing the heat exchange capacity of the finned heat exchanger. It then controls the heating element to increase its heating capacity, allowing the ambient temperature to quickly stabilize at T℃.

[0083] When the ambient temperature inside the charging / discharging chamber exceeds the set value T+2℃, the control system automatically lowers the compressor's cooling water outlet temperature to enhance the heat exchange capacity of the finned heat exchanger. It also controls the heating element to reduce its heating capacity. Conversely, when the ambient temperature inside the charging / discharging chamber falls below the set value T-2℃, the control system automatically raises the compressor's cooling water outlet temperature to reduce the heat exchange capacity of the finned heat exchanger. Finally, it controls the heating element to increase its heating capacity, rapidly stabilizing the ambient temperature to T℃.

[0084] The automatic model change mechanism of this invention is as follows:

[0085] Automatic type changing mechanism:

[0086] The automatic battery switching mechanism is designed to detect the height of the battery on the current tray to determine the battery model, and then switch the mechanism via cylinders to adapt the charging and discharging mechanism to the current battery. The automatic switching mechanism consists of an automatic moving mechanism and a limit post assembly composed of four limit posts of different lengths. The automatic moving mechanism is mounted on the integrated negative pressure assembly and consists of two sets of cylinders, a linear module, and limit posts. It is used to achieve automatic movement of the limit posts on the integrated negative pressure assembly. The limit posts of the automatic moving mechanism correspond to the limit post assembly on the battery tray fixing assembly.

[0087] The method for automatic model changeover using the constant temperature negative pressure integrated charging and discharging device of this invention is characterized by comprising the following steps:

[0088] Step 1: Start the constant temperature negative pressure integrated charging and discharging equipment. Place the tray containing the battery on the battery tray fixing component of the charging and discharging mechanism. Set the current battery model through the control system to make each mechanism work normally.

[0089] Step 2: The control system detects the current battery height on the tray using a height detection sensor to determine the battery model. The automatic battery changing system is then activated, and the control system uses a cylinder to drive the integrated negative pressure assembly to switch to the position of the limit post corresponding to the battery model's height.

[0090] Step 3: The upward lifting mechanism drives the integrated negative pressure assembly downward until the upper end of the battery in the tray contacts the negative pressure nozzle. The downward lifting mechanism drives the integrated charging and discharging needle plate assembly upward until the lower end of the battery in the tray contacts the charging and discharging probe and temperature probe.

[0091] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to 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 invention.

[0092] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0093] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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, an electrical connection, or a connection that allows communication between them; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0094] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0095] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0096] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A constant temperature negative pressure integrated charging and discharging device, characterized in that, include: The outer shell (1) is provided with a charging and discharging cavity (11) and a heat exchange cavity (12), and the charging and discharging cavity (11) and the heat exchange cavity (12) are interconnected; The charging and discharging mechanism (2) is disposed in the charging and discharging cavity (11) and includes a motion mechanism frame, an upper lifting mechanism (211), a lower lifting mechanism (212) disposed inside the motion mechanism frame, an integrated negative pressure assembly (214), and a charging and discharging integrated needle plate assembly (215); the upper lifting mechanism (211) is connected to the integrated negative pressure assembly (214) and is used to control the lifting and lowering movement of the integrated negative pressure assembly (214); the lower lifting mechanism (212) is connected to the charging and discharging integrated needle plate assembly (215) and is used to control the lifting and lowering movement of the charging and discharging integrated needle plate assembly (215); the area between the integrated negative pressure assembly and the charging and discharging integrated needle plate assembly is defined as the detection area; The constant temperature mechanism (3) is set in the heat exchange chamber (12) and includes an integrated water cooling mechanism (31), an internal heat exchange mechanism (32) and a circulating air mechanism (33). The integrated water cooling mechanism includes a compressor (311), an electric control valve and a condenser. The cold water outlet of the integrated water cooling mechanism (31) is connected in sequence to the electric control valve and the cold water inlet of the internal heat exchange mechanism (32). The hot water inlet of the integrated water cooling mechanism (31) is connected to the hot water outlet pipeline of the internal heat exchange mechanism (32). The control system (4) is located on the outer shell (1) on the right side of the charging and discharging chamber. The signal input terminal of the control system (4) is electrically connected to the signal output terminal of the temperature probe. The signal output terminal of the control system (4) is electrically connected to the control terminal of the electric control valve. It is used to control the flow rate of the cooling water provided by the integrated water cooling mechanism. The signal interaction port of the control system (4) is connected to the signal interaction port of the integrated water cooling mechanism. It is used to control the temperature of the cooling water provided by the integrated water cooling mechanism. The control system (4) is electrically connected to the circulating air mechanism (33) through the PWM circuit. It is used to control the operation of the circulating air mechanism. The power supply (5) is located on the outer shell (upper) on the right side of the charging and discharging chamber. The power supply (5) is electrically connected to the upper lifting mechanism (211), the lower lifting mechanism (212), the internal heat exchange mechanism (32), the circulating air mechanism (33), and the control system (4) respectively, and is used to provide the necessary power for the normal operation of the constant temperature negative pressure integrated charging and discharging equipment.

2. The constant temperature negative pressure integrated charging and discharging device according to claim 1, characterized in that, The motion mechanism frame includes a top square tube frame (22) and a bottom square tube frame (23). In the area between the top square tube frame (22) and the bottom square tube frame (23), an integrated negative pressure integrated component (214), a battery tray fixing component (213), and a charging and discharging integrated needle plate component (215) are arranged sequentially from top to bottom. The integrated negative pressure integrated component (214), the battery tray fixing component (213), and the charging and discharging integrated needle plate component (215) are arranged in parallel and spaced apart. The integrated negative pressure integrated component (214) and the charging and discharging integrated needle plate component (215) can be freely raised and lowered under the drive of the upper lifting mechanism (211) and the lower lifting mechanism (212), respectively. Four guide shafts (218) are provided between the top square tube frame (22) and the bottom square tube frame (23) of the mechanism. The two ends of the guide shafts (218) are respectively fixed on the lower surface of the top square tube frame (22) and the upper surface of the bottom square tube frame (23). The four guide shafts (218) are arranged in pairs on both sides of the top square tube frame (22) and the bottom square tube frame (23).

3. The constant temperature negative pressure integrated charging and discharging device according to claim 2, characterized in that, The integrated negative pressure assembly (214) includes a negative pressure plate, and the integrated charging and discharging needle plate assembly (215) includes a needle plate base plate. The guide shaft passes through the negative pressure plate and the needle plate base plate, and the negative pressure plate and the needle plate base plate can move up and down along the guide shaft respectively.

4. The constant temperature negative pressure integrated charging and discharging device according to claim 3, characterized in that, Linear bearings (217) are respectively provided on the negative pressure plate and the needle plate base plate at the positions corresponding to the guide shaft (218) to limit the guide shaft passing through the linear bearing (217).

5. The constant temperature negative pressure integrated charging and discharging device according to claim 2, characterized in that, The bottom of the needle plate is provided with an exhaust fan (333), the end of the needle plate is provided with an intake fan (334), and the battery tray fixing assembly (213) is provided with a transverse fan (335) to accelerate the air flow in the constant temperature chamber and improve the temperature uniformity and stability in the chamber.

6. The constant temperature negative pressure integrated charging and discharging device according to claim 2, characterized in that, The circulating air mechanism (33) includes a blower (332) and a circulating fan (331), both of which are electrically connected to the control system (4) via a PWM circuit. The air supply fan is located on the inner side plate of the charging and discharging cavity adjacent to the heat exchange cavity, and the air supply fan is located at the air outlet of the heat exchange cavity. The circulating fan (331) is located at the bottom, tail and right rear of the needle plate bottom plate, and is used to regulate the heat generated during the charging and discharging of the battery and the heat generated by the drive board.

7. The constant temperature negative pressure integrated charging and discharging device according to claim 2, characterized in that, The internal heat exchange mechanism (32) includes a finned heat exchanger (321) and a heating tube (322). The finned heat exchanger (321) includes a fin group and a heat exchange tube inserted in the fin group. The fin group includes several fins that are parallel to each other and spaced apart. The heat exchange tube is repeatedly bent and inserted into each fin of the fin group. The two ends of the heat exchange tube are respectively connected to a cold water inlet pipe and a hot water outlet pipe. The cold water inlet of the cold water inlet pipe and the hot water outlet of the hot water outlet pipe are located on the same side of the finned heat exchanger. The cold water inlet is connected to the cold water outlet of the electric control valve and the compressor through a water supply pipe. The hot water outlet is connected to the hot water inlet of the compressor through a return pipe. The heating tube (322) is located in the cavity of the internal heat exchange mechanism. The signal interaction port of the control system is connected to the signal interaction port of the heating tube (322) to control the temperature of the heating tube in the internal heat exchange mechanism.

8. The constant temperature negative pressure integrated charging and discharging device according to claim 2, characterized in that, The automatic type-changing mechanism (216) includes an automatic moving mechanism (2161) and a limiting post assembly (2162), wherein: The automatic moving mechanism (2161) is installed on the integrated negative pressure assembly (214) and consists of two sets of cylinders and a set of linear modules. It realizes the automatic movement of the upper limit column of the integrated negative pressure assembly through horizontal movement. The limiting post assembly (2162) is disposed on the upper surface of the battery tray fixing assembly (213) and includes four second limiting posts of different lengths to limit the lowest position of the integrated negative pressure assembly in the charging and discharging mechanism. The four second limiting posts of different lengths correspond to four different battery heights.

9. The constant temperature negative pressure integrated charging and discharging device according to claim 8, characterized in that, The automatic changing mechanism (216) further includes a first limiting post, which corresponds to the limiting post assembly on the battery tray fixing assembly.

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