A test device for energy storage system battery pack cluster level certification

Abstract

The utility model provides a kind of testing device for energy storage system battery pack cluster level authentication, including rack, high pressure box, connecting circuit and two liquid cooling pipelines, wherein, multiple detection sites are equipped on the rack, for installing battery pack;The high pressure box is fixedly arranged on the rack, and is electrically connected with each battery pack by the connecting circuit;The liquid cooling pipeline is fixedly arranged on the rack, and two liquid cooling pipelines are respectively communicated with two liquid cooling ports on the battery pack.The utility model is set by high pressure box and connecting circuit, not only can be electrically connected with battery pack, but also can collect each parameter information of battery pack in real time, by setting liquid cooling pipeline, by its communication with liquid cooling port, battery cluster use condition can be simulated, to improve the accuracy of the test results of the testing device, by setting lifting lug and inserting slot, the rack can be moved conveniently, to improve the practicability of the testing device.

Description

Technical Field

[0001] This utility model relates to the field of battery pack testing technology, and in particular to a testing device for cluster-level certification of battery packs in energy storage systems. Background Technology

[0002] With the increasing global demand for renewable energy, energy storage systems, as a key technology for balancing energy supply and demand and improving energy efficiency, have been widely applied and rapidly developed. Energy storage systems mainly utilize batteries to store and release electrical energy, with battery packs being the core component. Multiple battery packs are further combined to form battery clusters.

[0003] Battery packs present numerous safety hazards and performance variations during actual use. Even battery packs of the same specifications can exhibit significant differences in consistency, charge / discharge characteristics, and thermal management performance. As a collection of multiple battery packs, the performance of a battery pack cluster depends not only on the quality of each individual pack but also on factors such as the connection method and balance between them. If a battery pack cluster has not undergone rigorous certification testing before being put into use, problems such as overcharging, over-discharging, and thermal runaway may occur, leading to safety accidents such as fires and explosions. This can cause not only economic losses but also endanger human lives. Therefore, comprehensive and accurate certification testing of battery pack clusters in energy storage systems is a crucial step in ensuring the safe and reliable operation of energy storage systems.

[0004] The utility model disclosed in CN222461636U is a battery cluster testing device, which is equipped with an electrical box, a test rack and a charging and discharging device. It uses their electrical connection to realize the detection of battery cluster performance. However, it cannot fully simulate the actual application environment of battery cluster, which will lead to deviations in the test results of the testing device and is not conducive to ensuring the accuracy of the test results. Utility Model Content

[0005] In view of this, the present invention proposes a test device for battery pack cluster-level certification of energy storage systems, which can fully simulate the actual application environment of battery clusters and improve the accuracy of test results.

[0006] The technical solution of this utility model is implemented as follows: This utility model provides a testing device for cluster-level certification of battery packs in energy storage systems, including a frame, a high-voltage box, connecting lines, and two liquid-cooled pipelines, wherein...

[0007] The frame is equipped with multiple detection positions for installing battery packs;

[0008] The high-voltage box is fixedly mounted on the frame and electrically connected to each of the battery packs via the connecting lines;

[0009] The liquid cooling pipeline is fixedly mounted on the frame, and the two liquid cooling pipelines are respectively connected to two liquid cooling ports on the battery pack.

[0010] Based on the above technical solutions, preferably, the frame includes a frame body and a bracket, the bracket is fixedly mounted on the frame body, multiple brackets are provided, and the battery pack is disposed between two adjacent brackets.

[0011] More preferably, the frame further includes a pressure plate, which is fixedly mounted on the bracket and abuts against the top and bottom sides of the battery pack, respectively.

[0012] More preferably, the bracket includes a vertical portion and a horizontal portion, wherein,

[0013] The vertical part is fixedly mounted on the frame.

[0014] The horizontal part is fixedly mounted on the vertical part and abuts against the bottom side of the battery pack;

[0015] The pressure plate is fixedly mounted on the vertical part and abuts against the top side of the battery pack. The distance between the pressure plate and the horizontal part gradually decreases along the length of the battery pack.

[0016] More preferably, each of the vertical sections is provided with a plurality of pressure plates, and the plurality of pressure plates on the same vertical section are spaced apart along the length direction of the battery pack.

[0017] More preferably, the frame includes two side frames, a crossbar, and reinforcing bars, wherein,

[0018] The bracket is fixedly mounted on the side frame;

[0019] The crossbeam is fixedly installed between the two side frames;

[0020] The reinforcing rod is fixedly mounted on the side frame.

[0021] More preferably, it also includes a grounding wire, and the frame also includes a grounding plate, which is fixedly mounted on the frame, and the battery pack is electrically connected to the grounding plate through the grounding wire.

[0022] Based on the above technical solutions, preferably, the connection line includes a high-voltage line and a communication line, and the battery pack and the high-voltage box are electrically connected through the high-voltage line and the communication line, respectively.

[0023] Based on the above technical solutions, preferably, the frame is provided with a through slot at the bottom for inserting the forklift's front fork to transport the frame.

[0024] More preferably, the frame further includes a lifting lug, which is fixedly disposed on the top side of the frame.

[0025] The testing device for cluster-level certification of battery packs in energy storage systems disclosed in this invention has the following advantages over existing technologies:

[0026] (1) By setting up a high-voltage box and connecting lines, it is possible not only to make electrical connections with the battery pack, but also to collect various parameter information of the battery pack in real time. By setting up liquid cooling pipelines and using their connection with the liquid cooling port, the working conditions of the battery cluster can be simulated, thereby improving the accuracy of the test results of this test device.

[0027] (2) By setting up lifting lugs and through slots, the frame can be moved easily. By setting up pressure plates, the battery pack can be fixed more securely, thereby improving the practicality of this test device. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a perspective view of a test device for cluster-level certification of battery packs in an energy storage system according to the present invention.

[0030] Figure 2 for Figure 1 A 3D view of point A in the middle.

[0031] Figure 3 This is a perspective view of the liquid cooling port in a test device for cluster-level certification of a battery pack in an energy storage system according to this utility model.

[0032] Figure 4 This is a perspective view of the frame in a test device for cluster-level certification of battery packs in an energy storage system according to this utility model.

[0033] Figure 5 for Figure 4 A 3D view of point B in the middle.

[0034] Figure 6 This is a perspective view of the connection lines in a test device for cluster-level certification of a battery pack in an energy storage system according to this utility model.

[0035] The components include: 1. Frame; 11. Frame body; 111. Side frame; 112. Horizontal frame; 113. Reinforcing rod; 12. Bracket; 121. Vertical part; 122. Horizontal part; 13. Pressure plate; 14. Grounding plate; 15. Lifting lug; 101. Detection position; 102. Through slot; 2. High voltage box; 3. Connecting lines; 31. High voltage line; 32. Communication line; 4. Liquid cooling pipeline; 5. Grounding wire; 6. Battery pack; 601. Liquid cooling port. Detailed Implementation

[0036] The technical solutions of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0037] like Figure 3 As shown, the battery pack 6 includes a shell, a battery module and a liquid cooling plate. The battery module is fixedly installed inside the shell, and the liquid cooling plate is fixedly installed on the bottom side of the shell. The liquid cooling plate is provided with two liquid cooling ports 601. After the two liquid cooling ports 601 are connected to the liquid cooling medium circulation equipment, the shell and battery module and other components can be cooled.

[0038] This utility model discloses a test device for battery pack cluster-level certification of energy storage system, including a frame 1, a high-voltage box 2, connecting lines 3, liquid cooling pipelines 4 and grounding wire 5, used for testing battery pack 6.

[0039] The frame 1 has multiple detection positions 101, and the battery pack 6 to be tested is fixed on the detection position 101. The high-voltage box 2 integrates multiple electrical and control systems and is fixedly mounted on the frame 1. The high-voltage box 2 is electrically connected to each battery pack 6 through connecting lines 3. On the one hand, the high-voltage box 2 is electrically connected to the battery pack 6 through the connecting lines 3 to realize the distribution of power input and output, and to protect and control it. On the other hand, the operating parameters of the battery pack 6 are transmitted to the acquisition system in the high-voltage box 2 through the connecting lines 3, thereby realizing real-time monitoring of the operating status of the battery pack 6.

[0040] Two liquid cooling pipes 4 are fixedly mounted on the frame 1, and each pipe is connected to a liquid cooling port 601 on the battery pack 6. During the testing of the battery pack 6, a cooling medium can be introduced into the liquid cooling port 601 to cool the battery pack 6 and ensure its safe operation. A medium of a specific temperature can also be introduced into the liquid cooling port 601 to adjust the temperature of the battery pack 6, thereby simulating the operating environment of the battery pack 6 and testing its performance at different temperatures, thus improving the accuracy and comprehensiveness of the test results of this testing device.

[0041] The frame 1 includes a frame body 11, a bracket 12, a pressure plate 13, a base plate 14, and lifting lugs 15, such as Figure 4 As shown, the bracket 12 is fixedly mounted on the frame 11. There are two sets of brackets 12, and each set has multiple brackets. The two sets of brackets 12 are arranged opposite each other in the frame 11, and the two sets of brackets 12 correspond one to one. The battery pack 6 is arranged between the two corresponding brackets 12.

[0042] The pressure plate 13 is fixedly mounted on the bracket 12. The bottom side of the fixing ear plate of the battery pack 6 abuts against the bracket 12, and the top side of the fixing ear plate of the battery pack 6 abuts against the pressure plate 13, thereby improving the stability of the battery pack 6 when it is fixed.

[0043] like Figure 5 As shown, the bracket 12 includes a vertical part 121 and a horizontal part 122. The vertical part 121 is fixedly mounted on the frame 11, and the horizontal part 122 is fixedly mounted on the vertical part 121. The horizontal part 122 abuts against the bottom side of the battery pack 6. Preferably, the horizontal part 122 is perpendicular to the vertical part 121 and forms an L-shaped structure.

[0044] The pressure plate 13 is fixedly mounted on the vertical part 121 and abuts against the top side of the battery pack 6. Preferably, the distance between the pressure plate 13 and the horizontal part 122 gradually decreases along the length of the battery pack 6. Figure 5 As shown, the distance between the end of the pressure plate 13 near the ground plate 14 and the horizontal part 122 is greater than the distance between the end of the pressure plate 13 away from the ground plate 14 and the horizontal part 122, which makes it easier to insert the fixing ear plate of the battery pack 6 between the pressure plate 13 and the horizontal part 122, thereby improving the installation convenience of the battery pack 6.

[0045] Preferably, multiple pressure plates 13 are provided on each vertical part 121, and the multiple pressure plates 13 on the same vertical part 121 are spaced apart along the length direction of the battery pack 6, so that the multiple pressure plates 13 evenly abut against the fixing ear plate of the battery pack 6, further improving the fixing stability of the battery pack 6; of course, after the battery pack 6 is held between the horizontal part 122 and the pressure plate 13, bolts are also needed to fix the battery pack 6 and the frame 11.

[0046] The grounding plate 14 is fixedly installed on the frame 11. The battery pack 6 is electrically connected to the grounding plate 14 through the grounding wire 5, thereby grounding the battery pack 6.

[0047] like Figure 1 and Figure 4 As shown, the lifting lug 15 is fixedly installed on the top side of the frame 11, and the test device can be lifted and transported to a suitable position using the lifting lug 15; at the same time, a through slot 102 is provided under the frame 1, and the fork of the forklift can be inserted into the through slot 102, so that the frame 1 can be transported using the forklift.

[0048] like Figure 4 As shown, the frame 11 includes two side frames 111, a cross frame 112 and a reinforcing rod 113. The bracket 12 and the grounding plate 14 are both fixedly installed on the side frames 111. The cross frame 112 is fixedly installed between the two side frames 111. Multiple cross frames 112 can be installed. The high-voltage box 2 is fixedly installed on one of the cross frames 112.

[0049] The reinforcing rod 113 is a large rectangular tube, which is fixedly installed on the side frame 111, thereby improving the overall structural strength of the frame 11.

[0050] The connection line 3 includes a high-voltage line 31 and a communication line 32. The battery pack 6 and the high-voltage box 2 are electrically connected through the high-voltage line 31 and the communication line 32, respectively.

[0051] like Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, multiple high-voltage lines 31 are provided. Two adjacent battery packs 6 are connected through high-voltage lines 31, thereby realizing the series connection of multiple battery packs 6. The high-voltage box 2 is then connected to the upper battery pack 6 and the lower battery pack 6 through high-voltage lines 31, thereby realizing the electrical connection between the battery pack 6 and the high-voltage box 2, and transmitting high-voltage electrical energy between the battery pack 6 and the high-voltage box 2.

[0052] The communication line 32 is equipped with multiple electrical connection connectors. The battery pack 6 and the high voltage box 2 are connected to one of the connectors, thereby transmitting various data information between the battery pack 6 and the high voltage box 2. The battery management system can collect the status data of the battery pack 6, such as voltage, current and temperature, through the communication line 32.

[0053] Multiple battery packs 6 need to be connected in series, in parallel, or in a series-parallel combination during use to form a relatively independent battery unit, i.e., a battery cluster.

[0054] When testing the battery pack 6, multiple sets of high-voltage lines 31 and multiple sets of communication lines 32 can be set according to the number of battery clusters, so that each battery cluster is connected to the high-voltage box 2 through a set of high-voltage lines 31 and a set of communication lines 32.

[0055] Fire protection connection lines can also be installed, such as Figure 6 The battery pack 6, located in the middle of the circuit, is connected to the fire control panel via a fire connection line. The battery pack 6 is responsible for fire information collection and fire control.

[0056] The method of using the testing device for cluster-level certification of battery packs in an energy storage system according to this utility model is as follows:

[0057] First, multiple battery packs 6 are installed on multiple detection positions 101 respectively. Then, the multiple battery packs 6 and the high-voltage box 2 are electrically connected using the high-voltage line 31 and the communication line 32. Next, the liquid cooling pipe 4 is connected to the liquid cooling port 601 on the battery pack 6. Finally, the temperature control medium is introduced into the liquid cooling pipe 4, and the operating parameters of the battery pack 6 are observed to achieve the certification test of the battery pack 6.

[0058] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A testing device for cluster-level certification of battery packs in energy storage systems, characterized in that: It includes a frame (1), a high-pressure box (2), connecting lines (3), and two liquid-cooled pipes (4), among which, The frame (1) is provided with multiple detection positions (101) for installing battery packs (6). The high-voltage box (2) is fixedly mounted on the frame (1) and electrically connected to each of the battery packs (6) through the connecting line (3); The liquid cooling pipeline (4) is fixedly installed on the frame (1), and the two liquid cooling pipelines (4) are respectively connected to the two liquid cooling ports (601) on the battery pack (6).

2. The testing device for cluster-level certification of battery packs in an energy storage system as described in claim 1, characterized in that: The frame (1) includes a frame (11) and a bracket (12). The bracket (12) is fixedly mounted on the frame (11). Multiple brackets (12) are provided. The battery pack (6) is disposed between two adjacent brackets (12).

3. The testing device for cluster-level certification of battery packs in an energy storage system as described in claim 2, characterized in that: The frame (1) also includes a pressure plate (13), which is fixedly mounted on the bracket (12) and abuts against the top and bottom sides of the battery pack (6) respectively.

4. The testing device for cluster-level certification of battery packs in an energy storage system as described in claim 3, characterized in that: The bracket (12) includes a vertical part (121) and a horizontal part (122), wherein, The vertical part (121) is fixedly mounted on the frame (11); The horizontal part (122) is fixedly mounted on the vertical part (121) and abuts against the bottom side of the battery pack (6); The pressure plate (13) is fixedly disposed on the vertical part (121) and abuts against the top side of the battery pack (6). The distance between the pressure plate (13) and the horizontal part (122) gradually decreases along the length direction of the battery pack (6).

5. The testing device for cluster-level certification of battery packs in an energy storage system as described in claim 4, characterized in that: Each of the vertical sections (121) is provided with a plurality of pressure plates (13), and the plurality of pressure plates (13) on the same vertical section (121) are spaced apart along the length direction of the battery pack (6).

6. The testing device for cluster-level certification of battery packs in an energy storage system as described in claim 2, characterized in that: The frame (11) includes two side frames (111), a cross frame (112), and a reinforcing rod (113), wherein, The bracket (12) is fixedly mounted on the side frame (111); The crossbar (112) is fixedly installed between the two side frames (111); The reinforcing rod (113) is fixedly mounted on the side frame (111).

7. The testing device for cluster-level certification of battery packs in an energy storage system as described in claim 2, characterized in that: It also includes a grounding wire (5), and the frame (1) also includes a grounding plate (14), which is fixedly installed on the frame (11). The battery pack (6) is electrically connected to the grounding plate (14) through the grounding wire (5).

8. The testing device for cluster-level certification of battery packs in an energy storage system as described in claim 1, characterized in that: The connection line (3) includes a high-voltage line (31) and a communication line (32). The battery pack (6) and the high-voltage box (2) are electrically connected through the high-voltage line (31) and the communication line (32), respectively.

9. The testing device for cluster-level certification of battery packs in an energy storage system as described in claim 1, characterized in that: The frame (1) is provided with a through slot (102) at the bottom for inserting the forklift for transporting the frame (1).

10. The testing device for cluster-level certification of battery packs in an energy storage system as described in claim 2, characterized in that: The frame (1) also includes a lifting lug (15), which is fixedly installed on the top side of the frame (11).

Images