Rechargeable battery charging and discharging module and device based on liquid cooling heat dissipation

Abstract

The application discloses a kind of based on liquid cooling heat dissipation's rechargeable battery charge-discharge module and device, wherein the module includes: first support frame, for supporting the restraint tray of being equipped with rechargeable battery, the two sides of first support frame vertically with sliding connection guiding column being provided;Two opposite fixed plates are arranged at the top of guiding column, second support frame is arranged between two fixed plates, power module is arranged on second support frame, and electric connector is arranged on power module;Power module is covered with a heat sink, and the heat sink includes heat dissipation plate forming side wall, and the heat dissipation plate includes a plurality of fins and heat exchange pipe passing in fin, heat exchange pipe is provided with liquid inlet and liquid outlet, and first pipeline connected with liquid inlet and second pipeline connected with liquid outlet are further provided on heat sink.Through the above charge-discharge module, the heat emitted by power module is directly absorbed by heat dissipation plate, to achieve the effect of rapid heat dissipation, and simultaneously, the heat sink does not occupy too much space, and the structure is compact, and the cost is low.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery capacity distribution equipment, and particularly relates to a rechargeable battery charging and discharging module and device based on liquid cooling. BACKGROUND

[0002] With the wide application of rechargeable batteries in portable electronic devices, electric vehicles, energy storage systems and other fields, the importance of battery manufacturing processes is increasingly highlighted. Among them, the battery capacity formation process is an important part of the battery manufacturing process.

[0003] Formation refers to a small current charging and discharging process for manufactured lithium ion batteries. This process activates the chemical substances inside the battery through strict charging and discharging cycles, thereby stimulating its maximum energy. Capacity distribution is through capacity sorting and performance screening classification to ensure the uniformity of battery performance. During the capacity distribution process, the battery will undergo strict testing to ensure that its capacity and performance meet the design requirements. Only the battery whose test results meet or exceed the design capacity can be considered qualified. Formation and capacity distribution are usually carried out in one device, which can simultaneously charge and discharge a large number of batteries, similar to a charger.

[0004] For the charging and discharging equipment used for capacity formation, power dissipation is a problem that cannot be ignored, because a large number of batteries need to be charged and discharged at the same time, and if the heat dissipation effect is not good, it will seriously affect the charging and discharging efficiency. At present, the heat dissipation of such charging and discharging equipment is mainly through air cooling and water cooling. For the existing water cooling, due to the extensive use of radiators and water cooling pipes, there are problems of large occupied area, low space utilization rate and high equipment material cost. Specifically, the radiator is located outside the equipment, occupying a large space, and the equipment needs to be laid out with many pipes and valves, also increasing the material and construction cost. SUMMARY

[0005] The purpose of the present application is to provide a rechargeable battery charging and discharging module and device based on liquid cooling, which has good heat dissipation performance and compact heat dissipation structure.

[0006] In order to achieve the above purpose, the present application provides a rechargeable battery charging and discharging module based on liquid cooling, which comprises:

[0007] A first support frame is used to support a restraint tray loaded with rechargeable batteries, and opposite sides of the first support frame are vertically provided with guide columns in sliding connection therewith;

[0008] Two opposite fixed plates are arranged at the top of the guide column, and a second support frame opposite to the first support frame is arranged between the two fixed plates, and a power module is arranged on the second support frame, a plurality of electric connectors extending towards the first support frame are arranged on the power module, and the power module is used to provide charging power or discharge load for the battery in the restraint tray.

[0009] The first support frame is driven by the lifting driver to slide up and down along the guide column, so that the electrode end of the rechargeable battery in the restraint tray abuts against or separates from the electric connector.

[0010] A heat dissipation box is arranged on the power module, the heat dissipation box includes heat dissipation plates forming side walls, the heat dissipation plates include a plurality of fins and heat exchange pipes penetrating through the fins, the heat exchange pipes are provided with an inlet and an outlet, the heat dissipation box is further provided with a first pipeline connected with the inlet and a second pipeline connected with the outlet, the first pipeline is used to transport low-temperature liquid refrigerant into the heat exchange pipes, and the second pipeline is used to recover high-temperature refrigerant flowing out of the heat exchange pipes.

[0011] Preferably, the heat dissipation box includes a top plate and an end plate, and adjacent two sides of the heat dissipation plate abut against the top plate and the end plate respectively, and a containing space for containing the power module is formed between the two opposite heat dissipation plates.

[0012] Preferably, the inlet and the outlet are connected with the first pipeline and the second pipeline through telescopic corrugated pipes respectively.

[0013] Preferably, the power module includes a case and a heat dissipation fan arranged on the case, and an air outlet of the heat dissipation fan faces the heat dissipation plate.

[0014] Preferably, the inner sides of the two fixed plates are respectively provided with a first sliding rail, and the second support frame is in sliding connection with the first sliding rail.

[0015] Preferably, the first support frame includes an outer frame and support rods arranged in the outer frame at intervals, the outer frame is in sliding connection with the guide column, and a mounting frame is arranged in the gap between the support rods, a temperature sensing probe extending upwards is arranged on the mounting frame, and the temperature sensing probe can extend into the restraint tray to abut against the rechargeable battery therein.

[0016] Preferably, a plurality of support tables vertically arranged and located inside the outer frame are further included, the support tables can pass through the gap between the support rods when the first support frame slides up and down along the guide column, and the support tables are used to buffer the restraint tray.

[0017] Preferably, the bottom of the support rod is further provided with a second transversely extending slide rail, the mounting frame is in sliding connection with the second slide rail, and a telescopic drive connected with the mounting frame is further arranged on the second slide rail, the telescopic drive being used to drive the mounting frame to slide along the second slide rail to adjust the position of the temperature sensing probe in the horizontal plane.

[0018] Preferably, the second support frame is further provided with a support plate, a plurality of limiting grooves being arranged on the support plate in intervals; the electric connector comprises a fixing sleeve, a connecting head and a first elastic member, the connecting head being arranged in the fixing sleeve and being capable of sliding up and down relative to the fixing sleeve; the connecting head comprises a first connecting end used to be connected with the power module and a second connecting end used to abut against the electrode end of the rechargeable battery, one end of the first elastic member abutting against the second connecting end, the other end of the first elastic member abutting against the fixing sleeve, and the fixing sleeve being in clamping connection with the limiting grooves; the upper end of the connecting head is in electrical connection with the power module through a flexible member.

[0019] Preferably, the electric connector further comprises a second elastic member, one end of the second elastic member abutting against the fixing sleeve, and the other end of the second elastic member abutting against the first connecting end.

[0020] The application further provides a rechargeable battery charging and discharging device comprising a closed frame, the frame being provided with the rechargeable battery charging and discharging module as described above.

[0021] Preferably, the internal space of the frame comprises a first part, a second part and a third part located between the first part and the second part, at least one rechargeable battery charging and discharging module being arranged in each of the first part and the second part, and the third part being provided with an inlet main pipe and an outlet main pipe, the first pipe and the second pipe located in the first part and the second part being connected with the inlet main pipe and the outlet main pipe respectively.

[0022] Compared with the prior art, the rechargeable battery charging and discharging module provided by the above technical solution of the application has the following advantages: a second support frame is installed above the first support frame for bearing the restraint tray provided with the rechargeable battery, a power module is installed on the second support frame, and a heat dissipation box is directly arranged on the power module, the side wall of the heat dissipation box being composed of a water-cooled heat dissipation plate. Thus, when the rechargeable battery located on the first support frame is subjected to charging and discharging operation by the power module, the heat emitted by the power module is directly absorbed by the heat dissipation plate to achieve the effect of rapid heat dissipation, and meanwhile, the heat dissipation box does not occupy too much space, has compact structure and low cost. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 FIG. 1 is a perspective view of a rechargeable battery charging and discharging module according to an embodiment of the application.

[0024] Figure 2 is a side view. Figure 1

[0025] Figure 3 is a perspective view of a heat dissipation box in an embodiment of the present application.

[0026] Figure 4 is a perspective view of a heat dissipation plate in an embodiment of the present application. Figure 3

[0027] Figure 5 is a perspective view of a power module in an embodiment of the present application.

[0028] Figure 6 is a lower structure view of a charge and discharge module in an embodiment of the present application. Figure 1

[0029] Figure 7 is an installation structure view of a temperature sensing probe in an embodiment of the present application. Figure 6

[0030] Figure 8 is a perspective view of an electrical connector in an embodiment of the present application.

[0031] Figure 9 is an installation structure view of an electrical connector in an embodiment of the present application.

[0032] Figure 10 is a side view. Figure 9

[0033] Figure 11 is an internal planar structure view of a charge and discharge device in an embodiment of the present application.

[0034] Figure 12 is a front view of a charge and discharge device in another embodiment of the present application. DETAILED DESCRIPTION

[0035] To make the technical content, structural features, achieved purposes and effects of the present application clear, the following will be described in detail in combination with embodiments and the accompanying drawings.

[0036] The present embodiment discloses a charge and discharge module of a rechargeable battery, which is used for formation and capacity test of the rechargeable battery. Figures 1 to 5 The charge and discharge module includes a first support frame 1, a guide column 2, a fixed plate 30, a second support frame 4, a power module 5 and a heat dissipation box 7.

[0037] ​​​​​The first support frame 1 is used for supporting a restraint tray loaded with rechargeable batteries. The guide columns 2 are vertically arranged on opposite sides of the first support frame 1, and the first support frame 1 is in sliding connection with the guide columns 2. It should be noted that the restraint tray is a common jig for battery formation and distribution, which is used for loading the batteries to be processed and provides a certain restraint pressure for the batteries. Therefore, the specific structure of the restraint tray is not described in detail in the embodiment.

[0038] The two fixed plates 30 are oppositely arranged on the top of the guide columns 2, and the mounting space formed between the two fixed plates 30 is opposite to the first support frame 1. The second support frame 4 opposite to the first support frame 1 is arranged in the mounting space between the two fixed plates 30, and the power module 5 is arranged on the second support frame 4. The power module 5 is provided with a plurality of electrical connectors 6 extending towards the first support frame 1, and the power module 5 is used for providing charging power or discharging load for the batteries in the restraint tray.

[0039] During operation, the first support frame 1 can slide up and down along the guide columns 2 under the action of the lifting driver (not shown in the figure), so that the electrode end of the rechargeable battery in the restraint tray is in abutment or separation with the electrical connector 6.

[0040] A heat dissipation box 7 is arranged on the power module 5 to limit the working environment of the power module 5 in the limited space in the heat dissipation box 7. The heat dissipation box 7 includes heat dissipation plates 70 forming side walls, and the heat dissipation plates 70 include a plurality of fins 71 and heat exchange pipes 72 penetrating through the fins 71. The heat exchange pipes 72 are provided with an inlet 73 and an outlet 74. The heat dissipation box 7 is further provided with a first pipeline L1 connected with the inlet 73 and a second pipeline L2 connected with the outlet 74. The first pipeline L1 is used for conveying low-temperature liquid refrigerant into the heat exchange pipes 72, and the second pipeline L2 is used for recovering high-temperature refrigerant flowing out of the heat exchange pipes 72.

[0041] For the charging and discharging module with the above structure, during operation, the restraint tray loaded with batteries is placed on the first support frame 1, and then the lifting driver is started to drive the first support frame 1 to move upward, so that the electrode end of the battery is in abutment with the electrical connector 6, thereby establishing connection between the battery and the power module 5 for charging or discharging work. The heat generated during the operation of the power module 5 enters the heat dissipation plates 70 and is absorbed by the fins 71. The fins 71 exchange heat with the heat exchange pipes 72 to guide the absorbed heat into the liquid refrigerant in the heat exchange pipes 72, and with the circulation of the refrigerant, the refrigerant in the heat exchange pipes 72 is always in a low-temperature state, thereby realizing rapid heat dissipation of the power module 5. Moreover, the heat dissipation box 7 does not occupy too much space, has a compact structure, and has low cost.

[0042] Specifically, the heat dissipation box 7 comprises a top plate 75 and an end plate 76, and the two adjacent sides of the heat dissipation plate 70 are respectively in abutment with the top plate 75 and the end plate 76, and the containing space 77 for containing the power module 5 is formed between the two opposite heat dissipation plates 70. The liquid inlet 73 and the liquid outlet 74 are both arranged on the end plate 76.

[0043] On the other hand, the power module 5 comprises a cabinet 50 and a heat dissipation fan 51 arranged on the cabinet, and the air outlet of the heat dissipation fan 51 is directed to the heat dissipation plate 70, so as to quickly guide the heat emitted by the power module 5 into the heat dissipation plate 70.

[0044] In addition, in order to facilitate the installation of the water circulation pipeline, the liquid inlet 73 and the liquid outlet 74 are respectively connected with the first pipeline L1 and the second pipeline L2 through the elastic bellows 78.

[0045] On the other hand, the inner side of each of the two fixed plates 30 is provided with a first sliding rail 31, and the second support frame 4 is in sliding connection with the first sliding rail 31. In this way, by pulling the second support frame 4 to slide along the first sliding rail 31, the front and back positions of the electrical connector 6 can be adjusted, so as to reduce the matching precision requirement of the first support frame 1 and the second support frame 4.

[0046] On the other hand, as Figure 6 The first support frame 1 comprises an outer frame 10 and support rods 11 arranged in the outer frame 10 at intervals, and the outer frame 10 is in sliding connection with the guide column 2. The gap between the support rods 11 is provided with a mounting frame 12, and the temperature sensing probe T is arranged on the mounting frame 12 and extends upward. The temperature sensing probe T can extend into the restraint tray and abut against the rechargeable battery therein.

[0047] Through the arrangement of the temperature sensing probe T, the temperature of the battery can be monitored in real time during the charging or discharging operation of the battery, so as to monitor the temperature of the battery and avoid safety problems caused by the over-high temperature of the battery.

[0048] In addition, the charging and discharging module in the embodiment further comprises a plurality of support tables 8 arranged vertically and located inside the outer frame 10. When the first support frame 1 slides up and down along the guide column 2, the support tables 8 can pass through the gap between the support rods 11, and the support tables 8 are used for buffering the restraint tray.

[0049] In the embodiment, when the restraint tray is placed on the first support frame 1, first, the first support frame 1 is driven to slide to the bottom end of the guide column 2 by the lifting driver, at this time, the temperature sensing probe T moves to the bottom end of the guide column 2 synchronously with the first support frame 1 to avoid the influence of the temperature sensing probe T on the restraint tray. Then, the restraint tray is placed on the support table 8. Then, the first support frame 1 is moved upward, and as the first support frame 1 moves upward, the temperature sensing probe T is moved from the gap at the bottom of the restraint tray to abut against the side wall of the battery, and at the same time, the support rod 11 abuts against the bottom of the restraint tray to lift the restraint tray to continue to move in the direction of the second support frame 4 until the electrode end of the battery in the restraint tray abuts against the electrical connector 6.

[0050] Further, as Figure 6 and Figure 7 , the bottom of the support rod 11 is further provided with a second sliding rail 13 extending transversely, the mounting frame 12 is in sliding connection with the second sliding rail 13, and the second sliding rail 13 is further provided with a telescopic driver 14 connected with the mounting frame 12, the telescopic driver 14 is used to drive the mounting frame 12 to slide along the second sliding rail 13 to adjust the position of the temperature sensing probe T in the horizontal plane, so that the temperature sensing probe T is opposite to the gap at the bottom of the restraint tray.

[0051] On the other hand, as Figures 8 to 10 , the second support frame 4 is further provided with a support plate 40, and a plurality of limiting grooves 41 are arranged at intervals on the support plate 40.

[0052] The electrical connector 6 comprises a fixed sleeve 60, a connecting head 61 and a first elastic member 62. The connecting head 61 is arranged in the fixed sleeve 60 and can slide up and down relative to the fixed sleeve 60.

[0053] The connecting head 61 comprises a first connecting end 63 for connecting with the power supply module 5 and a second connecting end 64 for abutting against the electrode end of the rechargeable battery.

[0054] One end of the first elastic member 62 abuts against the second connecting end 64, and the other end of the first elastic member 62 abuts against the fixed sleeve 60, and the fixed sleeve 60 is clamped with the limiting groove 41. The upper end of the connecting head 61 is electrically connected with the power supply module 5 through a flexible member 65.

[0055] In the embodiment, the electrical connector 6 is fixed on the support plate 40 through the cooperation of the fixed sleeve 60 and the limiting groove 41 to avoid the left and right movement of the electrical connector 6 during the contact with the electrode end of the battery. In addition, when the electrode end of the battery abuts against the second connecting end 64 of the connecting head 61, the connecting head 61 moves upward, the first elastic member 62 is compressed, and an elastic restoring force is generated, under the action of the elastic restoring force, the connecting head 61 abuts tightly against the electrode end of the battery to avoid the virtual connection.

[0056] Further, the electric connector 6 further comprises a second elastic member 66, one end of the second elastic member 66 abutting against the fixing sleeve 60, and the other end of the second elastic member 66 abutting against the first connecting end 63. In the embodiment, when the restraint tray is moved downward to separate the battery from the connecting head 61, the first elastic member 62 drives the connecting head 61 to move downward, at this time, if the connecting head 61 moves downward excessively, the second elastic member 66 will be compressed, thereby preventing the connecting head 61 from continuing to move downward. Therefore, in the embodiment, through the cooperation of the second elastic member 66 and the first elastic member 62, at the end of the operation, the excessive downward movement of the connecting head 61 can be ensured, so that the second connecting end 64 of the connecting head 61 returns to the original position.

[0057] As Figure 11 , another preferred embodiment of the present application further discloses a rechargeable battery charging and discharging device, which comprises a closed rack 9, and the rack 9 is provided with the rechargeable battery charging and discharging module disclosed in the above embodiment. In the embodiment, the charging and discharging module is enclosed by the closed rack 9, and a closed space is formed in the rack 9, so that when the charging and discharging module is working, the heat dissipation plate 70 discharges part of the cold air to the outside, at this time, since the battery in the restraint tray also dissipates heat, a high pressure area is formed in the area of the restraint tray, and a low pressure area is formed in the heat dissipation box 7, then the high temperature airflow in the area of the restraint tray enters the heat dissipation box 7, and is discharged to the outside after heat exchange through the heat dissipation plate 70, thereby forming a convection circulation H between the heat dissipation box 7 in the charging and discharging module, the restraint tray and the area outside the charging and discharging module. Therefore, through the arrangement of the closed rack 9, not only the power module 5 can be cooled, but also the battery in the area of the restraint tray can be cooled.

[0058] On the other hand, as Figure 12 , the internal space of the rack 9 comprises a first part K1, a second part K2 and a third part K3 located between the first part K1 and the second part K2, at least one rechargeable battery charging and discharging module is arranged in each of the first part K1 and the second part K2, and the third part K3 is provided with an inlet liquid main pipe G1 and an outlet liquid main pipe G2, and the first pipe L1 and the second pipe L2 located in the first part K1 and the second part K2 are connected with the inlet liquid main pipe G1 and the outlet liquid main pipe G2 respectively.

[0059] In the embodiment, the rack 9 is divided into two layers, one charging and discharging module is arranged on each of the left and right sides of each layer, the inlet liquid main pipe G1 and the outlet liquid main pipe G2 connected with the refrigerant storage tank are arranged in the middle area, so that the pipeline is saved, and the pipeline layout is more reasonable. In addition, a distribution box D is arranged on both sides of the rack 9.

[0060] The above disclosure is merely the preferred embodiments of the present application and is not intended to limit the scope of the present application. Any equivalent changes made according to the patentable scope of the present application shall still fall within the scope of the present application.

Claims

1. A rechargeable battery charge-discharge module based on liquid cooling heat dissipation, characterized in that, The utility model relates to a kind of charging and discharging device for rechargeable battery, including: First support frame, the first support frame is used to support the restraint tray with rechargeable battery, the opposite two sides of the first support frame are vertically provided with guiding column slidably connected therewith; Two opposite fixed plates provided at the top of the guiding column, two the fixed plate between the second support frame opposite with the first support frame is provided, the second support frame is provided with power module, the power module is provided with several electric connectors towards the direction of the first support frame, the power module is used to provide charging power or discharge load for the battery in the restraint tray; The first support frame can slide up and down along the guiding column under the action of lifting driver, so that the electrode end of rechargeable battery in the restraint tray is in contact with or separated from the electric connector; The power module is covered with a heat sink, the heat sink includes a heat sink plate forming a side wall, the heat sink plate includes a plurality of fins and heat exchange pipes passing through the fins, the heat exchange pipes are provided with an inlet and an outlet, the heat sink is further provided with a first pipe connected to the inlet and a second pipe connected to the outlet, the first pipe is used to deliver low-temperature liquid refrigerant into the heat exchange pipe, and the second pipe is used to recover high-temperature refrigerant flowing out of the heat exchange pipe; the inner side of two fixed plates is respectively provided with a first sliding rail, and the second support frame is slidably connected with the first sliding rail.

2. The liquid cooling based thermal management rechargeable battery charge and discharge module of claim 1, wherein, The heat sink includes a top plate and an end plate, and the adjacent two sides of the heat sink plate are in contact with the top plate and the end plate, respectively, and the accommodation space for accommodating the power module is formed between the two opposite heat sink plates.

3. The liquid cooling based thermal management rechargeable battery charge and discharge module of claim 1, wherein, The inlet and the outlet are connected to the first pipe and the second pipe through the telescopic bellows, respectively.

4. The liquid cooling based thermal management rechargeable battery charge and discharge module of claim 1, wherein, The power module includes a case and a heat dissipation fan arranged on the case, and the air outlet of the heat dissipation fan faces the heat sink plate.

5. The liquid cooling based thermal management rechargeable battery charge and discharge module of claim 1, wherein, The first support frame includes an outer frame and support rods arranged in the outer frame, and the outer frame is slidably connected with the guiding column; the gap between the support rods is provided with a mounting bracket, and the temperature sensing probe protruding upward is arranged on the mounting bracket, and the temperature sensing probe can protrude into the restraint tray and be in contact with the rechargeable battery therein.

6. The liquid cooling based thermal management rechargeable battery charge and discharge module of claim 5, wherein, A plurality of support tables are vertically arranged inside the outer frame, and when the first support frame slides up and down along the guiding column, the support tables can pass through the gap between the support rods, and the support tables are used to buffer the restraint tray.

7. The liquid cooling based thermal management rechargeable battery charge and discharge module of claim 5, wherein, The bottom of the support rod is further provided with a second sliding rail extending transversely, the mounting bracket is slidably connected with the second sliding rail, and the second sliding rail is further provided with a telescopic driver connected with the mounting bracket, and the telescopic driver is used to drive the mounting bracket to slide along the second sliding rail to adjust the position of the temperature sensing probe in the horizontal plane.

8. The liquid cooling based thermal management rechargeable battery charge and discharge module of claim 1, wherein, The second support frame is further provided with a support plate, and a plurality of limiting grooves are arranged on the support plate at intervals; the electric connector comprises a fixing sleeve, a connecting head and a first elastic member, the connecting head is arranged in the fixing sleeve and can slide up and down relative to the fixing sleeve; the connecting head comprises a first connecting end for connecting with the power module and a second connecting end for abutting with an electrode end of the rechargeable battery, one end of the first elastic member abuts with the second connecting end, the other end of the first elastic member abuts with the fixing sleeve, and the fixing sleeve is clamped with the limiting grooves; the upper end of the connecting head is electrically connected with the power module through a flexible member.

9. The liquid cooling based thermal management rechargeable battery charge and discharge module of claim 8, wherein, The electric connector further comprises a second elastic member, one end of the second elastic member abuts with the fixing sleeve, and the other end of the second elastic member abuts with the first connecting end.

10. A charge-discharge device for a rechargeable battery, characterized by comprising: The machine frame comprises a closed machine frame, and the machine frame is provided with the rechargeable battery charging and discharging module as claimed in any one of claims 1 to 9.

11. The apparatus according to claim 10, wherein The internal space of the machine frame comprises a first part, a second part and a third part between the first part and the second part, at least one rechargeable battery charging and discharging module is arranged in the first part and the second part respectively, the third part is provided with a liquid inlet main pipe and a liquid outlet main pipe, and the first pipe and the second pipe in the first part and the second part are connected with the liquid inlet main pipe and the liquid outlet main pipe respectively.

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