Battery module for testing

Abstract

The utility model relates to the technical field of batteries, and particularly discloses a battery module for testing, which comprises a battery box, at least two battery cells and an acquisition wire harness, the peripheral side of the battery box is provided with at least two electrode interfaces and a test interface, the electrode interfaces are used for being connected with charging equipment, and the test interface is used for being connected with monitoring equipment; the battery cell is arranged in the battery box, and an electrode of the battery cell is connected with the electrode interface, so that the battery cell is connected with charging equipment; one end of the acquisition wire harness is connected with the battery core, and the other end is connected with the test interface, so that the monitoring equipment acquires working data of the battery core through the acquisition wire harness. Through the arrangement, overcharge testing can be independently carried out on each battery cell, mutual influence of input power of each battery cell due to series connection or parallel connection in the charging process is avoided, and the accuracy of collected battery cell working data is further ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery module for testing. Background Art

[0002] In the research and development and production of batteries, overcharge thermal runaway testing is an essential test item for energy storage battery packs. By detecting various data of the internal cells of the energy storage battery pack in the overcharge state, as well as the degree of mutual influence between the internal cells, it is possible to determine whether the energy storage battery pack meets safety standards and ensure the safe use of the energy storage battery pack.

[0003] In overcharge testing, the middle cell in the test battery pack is generally selected for testing, which can maximize the impact of fire or explosion on the cells on both sides due to overcharging. However, the cells in existing test battery packs are generally connected in series or in parallel. On the one hand, it is impossible to perform an overcharge test on a single cell, and all cells can only be overcharged at the same time. On the other hand, it will cause mutual influence of input power between cells, which is not conducive to obtaining accurate test data.

[0004] Moreover, manufacturing and testing battery packs according to industry standards requires the installation of structures such as steel belts, end plates, foams, insulating sheets, positioning blocks, aluminum bars, boxes, fuses, BMS (Battery Management System), MSD (Material Safety Data), and the need to set multiple battery cell numbers. This results in the structural design, material procurement, and production and manufacturing of standard test battery packs taking a long time, which often makes the test cycle too long and there is a risk of project delays. In addition, the overall weight and volume of the standard test battery pack will also be larger, and a battery pack lifting module will also be required. Utility Model Content

[0005] In order to solve at least one technical problem existing in the above-mentioned prior art, the utility model provides a test battery module, which forms a separate electrical connection between each battery cell and the charging device, so that each battery cell can be independently tested for overcharge, and avoids the mutual influence of the input power of each battery cell due to series or parallel connection during the charging process, thereby ensuring the accuracy of the collected battery cell working data. Moreover, the simpler structure also shortens the production and manufacturing cycle of the test battery module, and the corresponding test cycle is also shortened, thereby avoiding project delays.

[0006] The technical solution adopted by the utility model to solve the problem is:

[0007] Test battery module, including:

[0008] A battery box, wherein an electrode interface and a test interface are arranged on the peripheral side of the battery box, and at least two electrode interfaces are arranged, wherein the electrode interface is used to connect to a charging device, and the test interface is used to connect to a monitoring device;

[0009] At least two battery cells, each battery cell is arranged in a battery box, and electrodes of each battery cell are respectively connected to different electrode interfaces, so that each battery cell is separately connected to a charging device;

[0010] A collection harness, one end of which is connected to the battery cell and the other end is connected to the test interface, so that the monitoring device can collect the working data of the battery cell through the collection harness.

[0011] In some embodiments of the present invention, three battery cells are provided, and the battery cells are arranged in sequence in the battery box.

[0012] In some embodiments of the present invention, the collection harness includes a voltage collection line, the working data includes voltage data, one end of the voltage collection line is connected to the electrode of the battery cell, and the other end is connected to the test interface, so that the monitoring device collects the voltage data of the battery cell through the voltage collection line;

[0013] And / or, the collection harness includes a temperature collection line, the working data includes temperature data, one end of the temperature collection line is connected to the peripheral side of the battery cell, and the other end is connected to the test interface, so that the monitoring device collects the temperature data of the battery cell through the temperature collection line.

[0014] In some embodiments of the present invention, an end plate is provided on the outer end surface of the outermost battery cell, and fixing belts are provided around the two end plates and the circumference of each battery cell, so that the two end plates and each battery cell constitute a battery cell assembly.

[0015] In some embodiments of the present invention, an insulating member is provided between adjacent battery cells.

[0016] In some embodiments of the present invention, it also includes:

[0017] A bracket, wherein the bracket is provided with holes corresponding to the electrodes of each battery cell;

[0018] The bracket is buckled on the top of each battery cell, and each hole position corresponds to the electrode setting of each battery cell.

[0019] In some more specific embodiments, conductive members are installed on the holes, and electrodes of each battery cell are connected to different electrode interfaces through different conductive members.

[0020] In some more specific embodiments, a pressure relief valve is provided on the battery cell, and the pressure relief valve is used to relieve pressure inside the battery cell, and the bracket is provided with a hole groove corresponding to the pressure relief valve.

[0021] In some embodiments of the present invention, the battery box includes a box body and a box cover, and the opening of the box body is connected to the edge of the box cover through a sealing ring to form an accommodating space for accommodating the battery cell.

[0022] In some more specific embodiments, a first opening and a second opening are provided on the peripheral side of the box body, an electrode socket is inserted into the first opening, an electrode interface is provided on the electrode socket, a test socket is inserted into the second opening, and the test interface is provided on the test socket.

[0023] In summary, the test battery module provided by the utility model has the following technical effects:

[0024] In the test battery module embodiment of the utility model, an electrode interface and a test interface are provided on the peripheral side of the battery box, the electrode interface is used to connect the charging device, and the test interface is used to connect the monitoring device, and then at least two battery cells are arranged in the battery box, and the electrodes of each battery cell are respectively connected to different electrode interfaces, so that each battery cell is separately connected to the charging device, and finally one end of the collection harness is connected to the battery cell and the other end is connected to the test interface, so that the monitoring device collects the working data of the battery cell through the collection harness, so that each battery cell can be independently tested for overcharge, and the mutual influence of the battery cells due to series or parallel connection during the charging process is avoided, thereby ensuring the accuracy of the collected battery cell working data.

[0025] Furthermore, by setting up three battery cells for overcharge testing, the structure of the test battery module is greatly simplified, making the production and manufacturing cycle of the test battery module shorter, and the corresponding test cycle is also shortened, thereby avoiding project delays and greatly reducing the cost of overcharge testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the internal structure of a test battery module embodiment of the utility model;

[0027] Figure 2 This is a component disassembly diagram of a test battery module embodiment of the utility model;

[0028] Figure 3 It is a schematic diagram of the disassembly of a test battery module embodiment of the utility model.

[0029] The meanings of the reference numerals are as follows:

[0030] 1. Battery cell; 10. Insulator; 11. Electrode; 12. Pressure relief valve; 20. Sealing ring; 21. Box body; 2101. First opening; 2102. Second opening; 211. Electrode socket; 212. Test socket; 22. Box cover; 221. Explosion-proof valve; 3. Collection harness; 4. Bracket; 40. Hole position; 400. Hole slot; 41. Conductive part; 5. End plate; 50. Gel; 51. Fixing row; 6. Fixing belt. DETAILED DESCRIPTION

[0031] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be understood that the references to "one embodiment" or "an embodiment" throughout the specification mean that the specific features, structures, or characteristics associated with the embodiment are included in at least one embodiment of the present invention. Therefore, the references to "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0033] It should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs. The terms used in the description of the present invention are only for describing specific embodiments and are not intended to limit the present invention.

[0035] Example 1

[0036] according to Figures 1 to 3 As shown, the utility model provides a battery module for testing, including: a battery box, at least two battery cells 1, and a collection harness 3.

[0037] Among them, electrode interfaces and test interfaces are arranged on the surrounding sides of the battery box, and at least two electrode interfaces are arranged. The electrode interface is used to connect the charging device, and the test interface is used to connect the monitoring device; each battery cell 1 is arranged in the battery box, and the electrodes 11 of each battery cell 1 are respectively connected to different electrode interfaces, so that each battery cell 1 can be connected to the charging device separately; one end of the collection harness 3 is connected to the battery cell 1, and the other end is connected to the test interface, so that the monitoring device can collect the working data of the battery cell 1 through the collection harness 3.

[0038] Through the above settings, each battery cell can be tested for overcharge independently, and the mutual influence between the input powers of the battery cells due to series or parallel connection during the charging process is avoided, thereby ensuring the accuracy of the collected battery cell working data.

[0039] Specifically, an insulating member 10 is provided between adjacent battery cells 1 to ensure the individual arrangement of each battery cell 1 and completely isolate the conductive influence between adjacent battery cells 1. The insulating member 10 can be set as a silicone pad; in addition, an end plate 5 is provided on the outer end face of the outermost battery cell 1, and a fixing belt 6 is provided around the two end plates 5 and the surrounding sides of each battery cell 1 so that the two end plates 5 and each battery cell 1 form an assembly, and the fixing belt 6 can be set as a steel belt; more specifically, the end plate 5 can be connected to the battery cell 1 through a gel 50, and the gel 50 can be an aerogel 50.

[0040] In practice, the test battery module also includes: a bracket 4, the bracket 4 is provided with a hole 40 corresponding to the electrode 11 of each battery cell 1, the bracket 4 is buckled on the top of each battery cell 1, and each hole 40 is provided corresponding to the electrode 11 of each battery cell 1; furthermore, a conductive member 41 is installed on the hole 40, and the electrode 11 of each battery cell 1 is respectively connected to different electrode interfaces through different conductive members 41; in practice, the conductive member 41 forms an electrical connection with the electrode interface through a wire.

[0041] Furthermore, a pressure relief valve 12 is provided on the battery cell 1, and the pressure relief valve 12 is used to relieve pressure inside the battery cell 1. The bracket 4 is also provided with a hole groove 400 corresponding to the pressure relief valve 12 to ensure the normal operation of the pressure relief valve 12; further, each battery cell 1 is provided with two electrodes 11, one of which is a positive electrode and the other is a negative electrode. The electrode 11 of the battery cell 1 is arranged at the top of the battery cell 1, and the pressure relief valve 12 is arranged at the top of the battery cell 1 between the two electrodes 11 of the battery cell 1, and the hole groove 400 can be arranged between the two hole positions 40, thereby corresponding to the setting of the pressure relief valve 12.

[0042] In order to strengthen the stable connection inside the component, a fixed row 51 is provided on the upper edge of the end plate 5, and the fixed row 51 is used to connect the conductive member 41, so that the conductive member 41 is respectively connected to the bracket 4 and the end plate 5, thereby ensuring the stable connection between the conductive member 41 and the electrode 11; wherein the conductive member 41 can be set as a copper busbar.

[0043] Optionally, the collection harness 3 includes a temperature collection line, and the working data includes temperature data. One end of the temperature collection line is connected to the electrode 11 of the battery cell 1, and the other end is connected to the test interface, so that the monitoring device collects the temperature data of the battery cell 1 through the temperature collection line; one end of the voltage collection line is electrically connected to the electrode 11 of the battery cell 1 to accurately sense the actual voltage of the battery cell 1, thereby more accurately collecting the voltage data of the battery cell 1.

[0044] Optionally, the collection harness 3 includes a temperature collection line, and the working data includes temperature data. One end of the temperature collection line is connected to the peripheral side of the battery cell 1, and the other end is connected to the test interface, so that the monitoring device collects the temperature data of the battery cell 1 through the temperature collection line; one end of the temperature collection line is attached to the outer shell of the battery cell 1 to accurately sense the actual temperature of the battery cell 1, thereby more accurately collecting the temperature data of the battery cell 1.

[0045] Preferably, the battery box includes a box body 21 and a box cover 22, and the opening of the box body 21 is connected to the edge of the box cover 22 through a sealing ring 20 to form a storage space for accommodating the battery cell 1 and ensure the waterproofness of the battery box; more specifically, an explosion-proof valve 221 is provided on the box cover 22, and the explosion-proof valve 221 is used to relieve the pressure of the storage space.

[0046] More preferably, a first opening 2101 and a second opening 2102 are provided on the circumferential side of the box body 21, an electrode socket 211 is inserted into the first opening 2101, and an electrode interface is provided on the electrode socket 211, a test socket 212 is inserted into the second opening 2102, and a test interface is provided on the test socket 212; the test socket 212 can be provided as an electric couple connector; the second opening 2102 can be provided at a height lower than the first opening 2101.

[0047] In order to simplify the structure of the test battery module and take into account the sample size of the working data of the battery cell 1, three battery cells 1 are provided, and the battery cells 1 are arranged in sequence in the battery box. By performing an overcharge test on the middle battery cell 1 and collecting the working data of the two outermost battery cells 1, the impact of the overcharge state of the battery cell 1 on the battery cells 1 on both sides can be analyzed, thereby greatly simplifying the structure of the test battery module, making the production and manufacturing cycle of the test battery module shorter, and the corresponding test cycle is also shortened, thereby avoiding project delays and greatly reducing the cost of overcharge testing.

[0048] Correspondingly, the battery cell 1 is provided with a total of six electrodes 11, and the corresponding first opening 2101, electrode socket 211, hole position 40, and conductive member 41 are also provided with six, and the corresponding hole groove 400 is provided with three; in addition, the number of battery cells 1 can be set to 2-20, and the specific number can be set according to the actual test requirements.

[0049] Example 2

[0050] Based on the same concept, the utility model also discloses a battery testing device, which is applied with the above-mentioned testing battery module.

[0051] In practice, it also includes charging equipment and monitoring equipment; the charging equipment is used to charge the battery cell 1 to put the battery cell 1 in an overcharged state; the monitoring equipment is used to obtain the working data of the battery cell 1 to obtain the test result of the battery cell 1.

[0052] It should be noted that each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other. Although optional embodiments of the utility model embodiments have been described, once those skilled in the art know the basic creative concept, they can make additional changes and modifications to these embodiments. Therefore, the attached claims are intended to be interpreted as including optional embodiments and all changes and modifications that fall within the scope of the utility model embodiments.

[0053] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between these entities. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that an article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such article or terminal device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the article or terminal device including the elements.

[0054] The technical solution provided by the present invention is introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation method of the present invention. At the same time, for those skilled in the art, according to the principle and implementation method of the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A test battery module, characterized in that: include: A battery box, wherein an electrode interface and a test interface are provided on the peripheral side of the battery box, and at least two electrode interfaces are provided, wherein the electrode interface is used to connect a charging device, and the test interface is used to connect a monitoring device; At least two battery cells (1), the battery cells (1) being arranged in the battery box, the electrodes (11) of each battery cell (1) being respectively connected to different electrode interfaces, so that each battery cell (1) can be individually connected to a charging device; A collection harness (3), one end of the collection harness (3) being connected to the battery cell (1) and the other end being connected to the test interface, so that the monitoring device collects the working data of the battery cell (1) through the collection harness (3).

2. The test battery module according to claim 1, characterized in that: Three battery cells (1) are provided, and each of the battery cells (1) is arranged in sequence in the battery box.

3. The test battery module according to claim 1 or 2, characterized in that: The acquisition wiring harness (3) comprises a voltage acquisition line, the working data comprises voltage data, one end of the voltage acquisition line is connected to the electrode (11) of the battery cell (1), and the other end is connected to the test interface, so that the monitoring device acquires the voltage data of the battery cell (1) through the voltage acquisition line; And / or, the acquisition wiring harness (3) includes a temperature acquisition line, the operating data includes temperature data, one end of the temperature acquisition line is connected to the peripheral side of the battery cell (1), and the other end is connected to the test interface, so that the monitoring device acquires the temperature data of the battery cell (1) through the temperature acquisition line.

4. The test battery module according to claim 1 or 2, characterized in that: An end plate (5) is provided on the outer end surface of the outermost battery cell (1), and a fixing belt (6) is provided around the two end plates (5) and the circumference of each battery cell (1), so that the two end plates (5) and each battery cell (1) form a component.

5. The test battery module according to claim 1 or 2, characterized in that: An insulating member (10) is provided between adjacent battery cells (1).

6. The test battery module according to claim 1 or 2, characterized in that: Also includes: A support (4), wherein the support (4) is provided with holes (40) corresponding to the electrodes (11) of each of the battery cells (1); The bracket (4) is buckled onto the top of each of the battery cells (1), and each of the hole positions (40) is arranged corresponding to the electrode (11) of each of the battery cells (1).

7. The test battery module according to claim 6, characterized in that: A conductive member (41) is installed on the hole (40), and the electrode (11) of each of the battery cells (1) is connected to different electrode interfaces via different conductive members (41).

8. The test battery module according to claim 6, characterized in that: The battery core (1) is provided with a pressure relief valve (12), the pressure relief valve (12) being used to relieve pressure inside the battery core (1), and the bracket (4) is provided with a hole groove corresponding to the pressure relief valve (12).

9. The test battery module according to claim 1 or 2, characterized in that: The battery box comprises a box body (21) and a box cover (22); the opening of the box body (21) is connected to the edge of the box cover (22) via a sealing ring (20) to form an accommodating space for accommodating the battery cell (1).

10. The test battery module according to claim 9, characterized in that: A first opening (2101) and a second opening (2102) are provided on the peripheral side of the box body (21); an electrode socket (211) is inserted into the first opening (2101), and the electrode interface is arranged on the electrode socket (211); a test socket (212) is inserted into the second opening (2102), and the test interface is arranged on the test socket (212).

Images