PACK test mechanism

Abstract

The utility model relates to energy storage battery technical field discloses a PACK testing mechanism. The utility model discloses PACK testing mechanism, include: cable and analog signal generator, cable includes: first cable and second cable, one end of first cable is equipped with the connecting terminal, and the connecting terminal is embedded in the plastic shell, and one end of second cable is equipped with the needle seat, and the needle seat is equipped with the connecting jack, the utility model discloses PACK testing mechanism, and the connecting terminal of first cable is connected with BMS signal acquisition terminal, and the other end is connected with the positive pole of analog signal generator, and the needle seat of second cable is connected with BMS integrated board, and the other end is connected with the negative pole of analog signal generator, and analog signal generator sends analog signal, and the overtemperature overvoltage fault of analog battery module, whether the BMS monitoring system diagnoses the fault in time and timely alarm are tested and verified, realize the functional detection of BMS overtemperature overvoltage, convenient to use, and there is no damage to the battery pack.

Description

Technical Field

[0001] This utility model relates to the field of energy storage battery technology, specifically to a PACK testing mechanism. Background Technology

[0002] Energy storage containers have been widely used in power regulation services through integrated photovoltaic and energy storage solutions and microgrids. A complete energy storage container mainly consists of battery clusters, a battery management system (BMS), an energy management system (EMS), a power storage inverter (PCS), and other electrical equipment. As the battery management system, the BMS's core functions include battery status monitoring, SOH & SOC estimation, thermal management, equalization management, safety protection, communication functions, and fault diagnosis. It is a crucial component for ensuring the safe operation of the energy storage container.

[0003] A battery pack is the energy storage unit of a battery cluster. It is a unified whole composed of several battery modules, a battery management system (BMS), and a thermal management system. The BMS integration board is electrically connected to the battery modules through BMS signal acquisition terminals, and the BMS monitoring system is electrically connected to the BMS integration board. The BMS integration board collects the status parameters of the battery modules through the BMS signal acquisition terminals, thereby monitoring the battery modules and ensuring the safe operation of each battery module. Due to its complex structure and enormous energy, the battery cluster is not suitable for triggering over-temperature or over-voltage faults. Therefore, the over-temperature and over-voltage alarm functions of the battery pack BMS need to be tested and verified to ensure that when a battery module triggers an over-temperature or over-voltage fault, the BMS and other systems can promptly diagnose the fault and issue an alarm.

[0004] Currently, over-temperature testing of battery packs requires placing the entire pack in a walk-in temperature chamber. The chamber's temperature rise triggers an over-temperature fault in the battery module, thus testing whether the BMS monitoring system can promptly diagnose and trigger an alarm. This method is wasteful of time and resources due to the large amount of electrical energy required for the temperature chamber to operate and the long heating time. Furthermore, over-temperature testing is an irreversible and damaging experiment, which reduces the lifespan of the battery pack. Utility Model Content

[0005] The purpose of this invention is to provide a PACK testing mechanism to solve the problems mentioned in the background art.

[0006] This utility model embodiment provides a PACK testing mechanism, wherein the PACK is provided with BMS signal acquisition terminals and a BMS integrated board, including: a cable and an analog signal generator;

[0007] The cable includes: a first cable and a second cable;

[0008] One end of the first cable is provided with multiple connection terminals, which are embedded in a plastic housing for electrical connection with the BMS signal acquisition terminal. The other end of the first cable is used for electrical connection with the positive terminal of the analog signal generator.

[0009] One end of the second cable is provided with a pin socket, and the pin socket is provided with a connection socket. The connection socket is used to insert into the BMS integrated board to electrically connect the second cable to the BMS integrated board. The other end of the second cable is used to electrically connect to the negative terminal of the analog signal generator.

[0010] The analog signal generator is used to generate an analog signal of PACK failure in order to test the fault alarm function of the BMS.

[0011] Based on the above scheme, the PACK testing mechanism of this utility model, by setting up cables and an analog signal generator, includes a first cable and a second cable. The connecting terminal of the first cable is used to electrically connect to the BMS signal acquisition terminal, and the other end is used to electrically connect to the positive terminal of the analog signal generator. The pin header of the second cable is used to connect to the BMS integrated board, and the other end is used to electrically connect to the negative terminal of the analog signal generator. In this PACK testing mechanism, the positive terminal of the analog signal generator is connected to the BMS signal acquisition terminal through the cable, and the negative terminal of the analog signal generator is connected to the BMS integrated board through the cable. The analog signal generator emits a simulated signal of PACK battery module failure, simulating over-temperature and over-voltage faults triggered by the battery module. This tests and verifies whether the BMS monitoring system can promptly diagnose and alarm over-temperature and over-voltage faults of the battery module, achieving functional testing of BMS over-temperature and over-voltage. It is easy to use, does not damage the PACK battery pack, and will not affect the service life of the PACK.

[0012] In one feasible embodiment, the cable further includes: a cable connector;

[0013] The cable connector is used for detachable connection with the first cable and the second cable, so that the first cable and the second cable are connected as one unit.

[0014] In one feasible embodiment, both the first cable and the second cable comprise multiple single-core PVC wires.

[0015] The single-core PVC wire of the first cable is connected to the connecting terminal, and the single-core PVC wire of the second cable is connected to the pin socket.

[0016] In one feasible embodiment, the cable further includes: a PVC tape layer;

[0017] The PVC tape layer is wrapped around the outside of the single-core PVC wire.

[0018] In one feasible embodiment, the cable further includes: a nylon braided tube layer;

[0019] The nylon mesh layer covers the outside of the PVC tape layer.

[0020] In one feasible embodiment, the cable further includes: an acetate cloth tape layer;

[0021] The acetate cloth tape layer covers the outside of the nylon mesh layer.

[0022] In one feasible approach, the analog signal generator is a resistor box. Attached Figure Description

[0023] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the battery pack in this utility model;

[0025] Figure 2 This is a schematic diagram showing the connection between the BMS integrated board and the battery module in this utility model;

[0026] Figure 3 This is a schematic diagram of the PACK testing mechanism in an embodiment of the present utility model;

[0027] Figure 4 This is a schematic diagram of the cable in an embodiment of the present utility model;

[0028] Figure 5 This is a schematic diagram of the plastic shell in an embodiment of the present utility model;

[0029] Figure 6 This is a schematic diagram of the needle holder in an embodiment of the present utility model.

[0030] Numbering on the map:

[0031] 1. Cable; 101. Single-core PVC wire; 102. PVC tape layer; 103. Nylon braided tube layer; 104. Acetate cloth tape layer; 11. First cable; 111. Connecting terminal; 112. Plastic housing; 12. Second cable; 121. Pin socket; 122. Connecting jack; 13. Cable connector; 2. Analog signal generator; 21. Positive terminal; 22. Negative terminal; 100. PACK; 110. BMS signal acquisition terminal; 120. BMS integrated board; 130. Battery module. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0033] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model.

[0034] In this utility model, 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 communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] The technical solution of this utility model will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0036] As described in the background section of this application, and see also Figure 1 and Figure 2 As shown, the battery pack (PACK) 100 is the energy storage unit of the battery cluster, which is a unified whole composed of several battery modules (Models) 130, a BMS, and a thermal management system. The BMS integration board 120 is electrically connected to the battery modules 130 through the BMS signal acquisition terminal 110. The BMS monitoring system is also electrically connected to the BMS integration board 120. The BMS integration board 120 collects the operating parameters of the battery modules 130 through the BMS signal acquisition terminal 110, thereby monitoring the battery modules and ensuring the safe operation of each battery module. Before leaving the factory, the over-temperature and over-voltage alarm functions of the battery pack BMS must be tested and verified to ensure that when a battery module triggers an over-temperature or over-voltage fault, the BMS and other systems can promptly diagnose the fault and issue an alarm.

[0037] Currently, over-temperature testing of battery packs requires placing the entire pack in a walk-in temperature chamber. The chamber's temperature rise triggers an over-temperature fault in the battery module, thus testing whether the BMS monitoring system can promptly diagnose and trigger an alarm. This method is wasteful of time and resources due to the large amount of electrical energy required for the temperature chamber to operate and the long heating time. Furthermore, over-temperature testing is an irreversible and damaging experiment, which reduces the lifespan of the battery pack.

[0038] To address the aforementioned problems, the inventors of this application have proposed a technical solution, the specific embodiments of which are as follows:

[0039] Figure 1 This is a schematic diagram of the battery pack in this utility model. Figure 2 This is a schematic diagram showing the connection between the BMS integrated board and the battery module in this utility model. Figure 3 This is a schematic diagram of the PACK testing mechanism in an embodiment of this utility model. Figure 4 This is a schematic diagram of the cable in an embodiment of the present invention. Figure 5 This is a schematic diagram of the plastic shell in an embodiment of the present utility model. Figure 6 This is a schematic diagram of the needle holder in an embodiment of the present utility model.

[0040] like Figure 1 and Figure 2 As shown, in this embodiment of the PACK test mechanism, the PACK (battery pack) 100 is provided with a BMS signal acquisition terminal 110 and a BMS integrated board 120. One end of the BMS signal acquisition terminal 110 is electrically connected to the BMS integrated board 120, and the other end of the BMS signal acquisition terminal 110 is electrically connected to the battery module 130 of the PACK. The BMS integrated board 120 is electrically connected to the BMS monitoring system, and the BMS monitoring system monitors the safe operation of the PACK (battery pack).

[0041] like Figures 3 to 6As shown, the PACK test mechanism includes: cable 1 and analog signal generator 2.

[0042] The cable 1 has two cables, namely the first cable 11 and the second cable 12.

[0043] One end of the first cable 11 is provided with a connection terminal 111, and there are multiple connection terminals 111, the number of which corresponds to the number of BMS signal acquisition terminals 110 of the PACK. The multiple connection terminals 111 of the first cable 11 are respectively embedded in a plastic housing 112, which protects the connection terminals 111 and prevents them from bending or deforming. The connection terminals 111 of the first cable 11 are used for electrical connection with the BMS signal acquisition terminals 110 of the PACK, and the other end of the first cable 11 is used for electrical connection with the positive terminal 21 of the analog signal generator 2.

[0044] One end of the second cable 12 is provided with a pin socket 121, which has multiple connection holes 122. The pin socket 121 of the second cable 12 is plugged into the BMS integrated board 120 of the PACK through the connection holes 122, so that the second cable 12 is electrically connected to the BMS integrated board 120. The other end of the second cable 12 is used to electrically connect to the negative terminal 22 of the analog signal generator 2.

[0045] Analog signal generator 2 is used to generate simulated fault signals such as temperature and voltage of the battery module to detect the fault alarm function of the BMS monitoring system.

[0046] In this embodiment of the PACK test mechanism, the connection between the BMS signal acquisition terminal and the BMS integrated board should be disconnected first.

[0047] Connect the first cable to the BMS signal acquisition terminal, and insert the other end of the first cable into the positive terminal of the analog signal generator, and electrically connect it to the positive terminal of the analog signal generator.

[0048] Connect the pin header of the second cable to the BMS integrated board. Insert the other end of the second cable into the negative terminal of the analog signal generator, electrically connecting it to the negative terminal. This forms a closed loop between the PACK's battery module and the BMS monitoring system. Adjust the analog signal generator to simulate temperature and voltage faults in the PACK's battery module. Monitor the BMS monitoring system for fault signals indicating these faults, thereby verifying the functionality of the BMS integrated board's over-temperature and over-voltage alarm functions.

[0049] As can be seen from the above, the PACK testing mechanism of this embodiment, by setting up cables and an analog signal generator, includes a first cable and a second cable. The connecting terminal of the first cable is used to electrically connect to the BMS signal acquisition terminal, and the other end is used to electrically connect to the positive terminal of the analog signal generator. The pin header of the second cable is used to connect to the BMS integrated board, and the other end is used to electrically connect to the negative terminal of the analog signal generator. In this embodiment, the positive terminal of the analog signal generator is connected to the BMS signal acquisition terminal through the cable, and the negative terminal of the analog signal generator is connected to the BMS integrated board through the cable. The analog signal generator emits a simulated signal of PACK battery module failure, simulating the triggering of over-temperature and over-voltage faults in the battery module. This tests and verifies whether the BMS monitoring system can promptly diagnose battery module faults and issue timely alarms, achieving functional testing of BMS over-temperature and over-voltage. It is convenient and quick to use, and does not damage the PACK battery pack.

[0050] Optional, such as Figure 4 As shown, in this embodiment, the PACK test mechanism, cable 1 further includes: cable connector 13.

[0051] The cable connector 13 is used to connect to the first cable 11 and the second cable 12. One end of the first cable 11 is provided with a connecting terminal 111 and a plastic housing 112, and the other end of the first cable 11 is detachably connected to the cable connector 13. One end of the second cable 12 is provided with a pin seat 121, and the other end of the second cable 12 is also detachably connected to the cable connector 13. The cable connector 13 connects the first cable 11 and the second cable 12 into a single unit, which facilitates the carrying of the cable 1.

[0052] Optionally, in this embodiment, the PACK testing mechanism, the first cable 11 and the second cable 12 both include multiple single-core PVC wires 101.

[0053] The single-core PVC wire 101 is a signal transmission line used to transmit electrical signals.

[0054] The multiple single-core PVC wires 101 of the first cable 11 are electrically connected to multiple connecting terminals 111 respectively.

[0055] The multiple single-core PVC wires 101 of the second cable 12 are electrically connected to the multiple connection sockets 122 of the pin socket 121.

[0056] Furthermore, in this embodiment, the PACK testing mechanism, cable 1, also includes a PVC tape layer 102.

[0057] A PVC (polyvinyl chloride) tape layer 102 is wrapped around the outside of the first cable 11 and the second cable 12. That is, the PVC tape is wrapped around the outside of multiple single-core PVC wires 101, and the multiple single-core PVC wires 101 are wrapped together to form a PVC tape layer 102. The PVC tape layer 102 protects the single-core PVC wires 101, so that the single-core PVC wires 101 are not exposed to the air and short-circuit the single-core PVC wires 101.

[0058] Furthermore, in this embodiment, the PACK testing mechanism and cable 1 also include a nylon mesh layer 103.

[0059] A nylon braided tubing is fitted over the PVC tape layer 102 of the cable to form a nylon braided tubing layer 103. The nylon braided tubing has the characteristics of wear resistance, corrosion resistance, and flexibility. It is fitted over the PVC tape layer 102 to protect the single-core PVC wire and the PVC tape, thereby extending the service life of the cable.

[0060] Furthermore, in this embodiment, the PACK testing mechanism, cable 1, also includes an acetate cloth tape layer 104.

[0061] The acetate cloth tape layer 104 is wrapped around the outside of the nylon braided tube layer 103 of the cable. The acetate cloth tape has properties such as high temperature resistance, aging resistance, acid and alkali resistance, and mildew resistance, and also has good insulation properties. The acetate cloth tape layer 104 forms an insulating wrap around the PVC tape and nylon braided tube, ensuring the safe use of the cable.

[0062] Furthermore, in this embodiment, the PACK testing mechanism uses a resistor box as the analog signal generator 2. By adjusting the resistance value of the resistor box, temperature and voltage faults in the PACK battery module can be simulated.

[0063] The usage process of the PACK testing mechanism of this utility model is as follows:

[0064] Disconnect the BMS integrated board 120 of the PACK (battery pack) from the BMS signal acquisition terminal 110, connect the BMS signal acquisition terminal 110 to the connection terminal 111 of the first cable 11, open the cable connector 13, connect the other end of the first cable 11 to the positive terminal of the resistor box 2, connect the second cable 12 to the negative terminal of the resistor box 2, insert the pin socket 121 of the second cable 12 into the BMS integrated board 120, adjust the resistance value of the resistor box 2, the resistor box 2 emits an analog signal to simulate the fault temperature and / or fault voltage of the battery module 130, triggering the temperature fault and / or voltage fault of the battery module 130, and monitor whether there is a fault signal in the BMS monitoring system to verify whether the BMS over-temperature and over-voltage alarm functions are normal.

[0065] In this utility model, unless otherwise explicitly specified and limited, the first feature being "on" or "below" the second feature can mean that the first feature and the second feature are in direct contact, or that the first feature and the second feature are in indirect contact through an intermediate medium.

[0066] Furthermore, "above," "on top of," and "above" the first feature in relation to 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. Similarly, "below," "under," and "beneath" the first feature in relation to 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.

[0067] In the description of this specification, 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.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A PACK testing mechanism, wherein the PACK is equipped with BMS signal acquisition terminals and a BMS integrated board, characterized in that, include: Cables and analog signal generators; The cable includes: a first cable and a second cable; One end of the first cable is provided with multiple connection terminals, which are embedded in a plastic housing for electrical connection with the BMS signal acquisition terminal. The other end of the first cable is used for electrical connection with the positive terminal of the analog signal generator. One end of the second cable is provided with a pin socket, and the pin socket is provided with a connection socket. The connection socket is used to insert into the BMS integrated board to electrically connect the second cable to the BMS integrated board. The other end of the second cable is used to electrically connect to the negative terminal of the analog signal generator. The analog signal generator is used to generate an analog signal of PACK failure in order to test the fault alarm function of the BMS.

2. The PACK testing mechanism according to claim 1, characterized in that, The cable also includes: a cable connector; The cable connector is used for detachable connection with the first cable and the second cable, so that the first cable and the second cable are connected as one unit.

3. The PACK testing mechanism according to claim 1, characterized in that, Both the first cable and the second cable consist of multiple single-core PVC wires; The single-core PVC wire of the first cable is connected to the connecting terminal, and the single-core PVC wire of the second cable is connected to the pin socket.

4. The PACK testing mechanism according to claim 3, characterized in that, The cable also includes: a PVC tape layer; The PVC tape layer is wrapped around the outside of the single-core PVC wire.

5. The PACK testing mechanism according to claim 4, characterized in that, The cable also includes: a nylon braided tubing layer; The nylon mesh layer covers the outside of the PVC tape layer.

6. The PACK testing mechanism according to claim 5, characterized in that, The cable also includes: an acetate cloth tape layer; The acetate cloth tape layer covers the outside of the nylon mesh layer.

7. The PACK testing mechanism according to any one of claims 1 to 6, characterized in that, The analog signal generator is a resistor box.

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