Battery module pressurization experiment device

Abstract

The utility model belongs to the technical field of battery modules, and particularly relates to a battery module pressurization experiment device. The pressure sensing assembly comprises a first end plate and a pressure sensor, the first end plate is arranged on the support, and the pressure sensor is arranged on one side of the first end plate; the tightening and pressurizing assembly comprises a pressing plate, an elastic piece and a bandage, the pressing plate is connected with the support through the elastic piece, the battery module to be pressed is located between the pressing plate and the pressure sensor, and the bandage is connected with the pressing plate and surrounds the outer side of the battery module to be pressed; the winding mechanism is located on the other side of the first end plate and connected with the bandage; the control unit is used for controlling the operation state of the winding mechanism according to the pressure detected by the pressure sensor; the system has the beneficial effects that the group assembling pressure of a plurality of batteries is monitored and changed in real time, so that the structural stability of the battery module is ensured; and in the use process, the binding belt does not need to be welded and cut off, so that the material consumption is reduced, and the time of manually binding the binding belt is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery modules, and in particular relates to a battery module pressurization test device. Background Art

[0002] At present, in order to meet the energy and voltage requirements of the usage scenario, multiple batteries usually need to be assembled into groups for use. Different batteries are fixed in different ways when grouped. Square shell batteries or soft-pack batteries are usually fixed with end plates and straps.

[0003] In the prior art, when square shell batteries or soft pack batteries are fixed in groups, end plates are usually set on both sides of the battery pack, and then the end plates on both sides are squeezed by a pressurizing device, and then the entire module is bundled with a strap through the positioning structure on the end plate, and finally the strap is shrunk and baked to fix it. This fixing method requires first obtaining the pressure required to be applied by the pressurizing device through experiments, and the pressure required to be applied is different for batteries of different numbers or models. Therefore, for pressurization experiments of batteries of different numbers or models, the straps need to be cut when replacing the batteries, and then tied again after the battery cells are replaced. This not only consumes a lot of materials, but also takes a lot of time and is inefficient. Utility Model Content

[0004] The purpose of the utility model is to provide a battery module pressurization test device to solve the above-mentioned technical problems.

[0005] In view of this, the utility model provides a battery module pressurization test device, comprising:

[0006] A bracket, which is used to place the battery module to be pressed;

[0007] A pressure sensing assembly, the pressure sensing assembly comprises a first end plate and a pressure sensor, the first end plate is arranged on the bracket, and the pressure sensor is arranged on one side of the first end plate;

[0008] A tightening and pressurizing assembly, the tightening and pressurizing assembly comprises a pressing plate, an elastic member and a binding band, the pressing plate is connected to the bracket through the elastic member, the battery module to be pressed is located between the pressing plate and the pressure sensor, and the binding band is connected to the pressing plate and surrounds the outside of the battery module to be pressed;

[0009] A winding mechanism, the winding mechanism is installed on the bracket and is located on the other side of the first end plate, and the driving end of the winding mechanism is connected to the binding belt;

[0010] A control unit controls the operation state of the winding mechanism according to the pressure detected by the pressure sensor.

[0011] Furthermore, the pressure sensing component also includes:

[0012] A second end plate, the second end plate is movably disposed on the bracket;

[0013] Wherein, the pressure sensor is located between the first end plate and the second end plate.

[0014] Furthermore, both ends of the binding belt pass through the second end plate and the first end plate in sequence and are connected to the winding mechanism.

[0015] Furthermore, a connecting hole is provided on the pressing plate, and the binding strap is connected to the pressing plate by passing through the connecting hole.

[0016] Further, the winding mechanism comprises:

[0017] at least one driving member, the driving member being mounted on the bracket;

[0018] At least one winding member, the driving member is used to control the winding member to rotate to drive the strap to contract.

[0019] Furthermore, the driving member is a motor.

[0020] Furthermore, the winding member is a winding disc.

[0021] Furthermore, there are multiple straps.

[0022] Furthermore, a plurality of binding straps are arranged parallel to each other.

[0023] The beneficial effects of the utility model are:

[0024] By using this experimental device, the group assembly pressure of multiple batteries can be monitored and changed in real time to ensure the structural stability of the battery module; and during use, the straps do not need to be welded or cut, which not only reduces material consumption but also saves time for manual strapping, effectively improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 It is a schematic diagram of the overall structure of the utility model from another perspective;

[0027] The symbols in the figure are:

[0028] 1. Bracket; 2. First end plate; 3. Pressure sensor; 4. Pressure plate; 5. Elastic member; 6. Binding belt; 7. Second end plate; 8. Driving member; 9. Winding member. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] In the description of the present application, it should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0031] Embodiment 1:

[0032] This embodiment provides a battery module pressurization test device, including:

[0033] Bracket 1, bracket 1 is used to place the battery module to be pressed;

[0034] A pressure sensing assembly, the pressure sensing assembly comprises a first end plate 2 and a pressure sensor 3, the first end plate 2 is arranged on the bracket 1, and the pressure sensor 3 is arranged on one side of the first end plate 2;

[0035] The tightening and pressurizing assembly includes a pressing plate 4, an elastic member 5 and a binding band 6. The pressing plate 4 is connected to the bracket 1 through the elastic member 5. The battery module to be pressed is located between the pressing plate 4 and the pressure sensor 3. The binding band 6 is connected to the pressing plate 4 and surrounds the outside of the battery module to be pressed.

[0036] A winding mechanism, which is mounted on the bracket 1 and located on the other side of the first end plate 2, and a driving end of the winding mechanism is connected to the binding belt 6;

[0037] The control unit controls the operation state of the winding mechanism according to the pressure detected by the pressure sensor 3.

[0038] In this technical solution, if Figure 1 , Figure 2As shown, a pressure plate 4 is connected to the strap 6, and the side of the pressure plate 4 away from the first end plate 2 is connected to the bracket 1 through an elastic member 5, and the elastic member 5 can be a spring. Both ends of the strap 6 are connected to the driving end of the winding mechanism through the first end plate 2, and the pressure sensor 3 is arranged on the side of the first end plate 2 close to the pressure plate 4. An area for placing a battery module is formed between the pressure plate 4, the strap 6 and the first end plate 2, and the battery module to be compressed is placed in the area and in contact with the pressure sensor 3.

[0039] When the experimental device is working, the winding mechanism is started to wind the strap 6, so that the strap 6 is tightened, and the pressure plate 4 and the first end plate 2 squeeze the battery module. At the same time, the spring is stretched and deformed. The pressure sensor 3 can detect the pressure between the battery module and the first end plate 2. The detected pressure is the pressure value between each battery in the battery module. The control unit can be a PLC, which controls the operation state of the winding mechanism according to the pressure detected by the pressure sensor 3, thereby adjusting the tightness of the strap 6, and thus meeting the pressure required for the grouping of different models or quantities of batteries. After the verification of the extruded battery module is completed, the winding mechanism operates in the reverse direction to loosen the strap 6, and at the same time, the elastic member 5 returns to its original state to drive the pressure plate 4 to reset, and the staff replaces the battery module.

[0040] In summary, by using this experimental device, the group assembly pressure of multiple batteries can be monitored and changed in real time to ensure the structural stability of the battery module; and during use, the strap 6 does not need to be welded or cut, which not only reduces material consumption but also saves time for manual strapping 6, effectively improving production efficiency.

[0041] Embodiment 2:

[0042] This embodiment provides a battery module pressurization test device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0043] Furthermore, the pressure sensing component also includes:

[0044] A second end plate 7, the second end plate 7 is movably arranged on the bracket 1;

[0045] The pressure sensor 3 is located between the first end plate 2 and the second end plate 7 .

[0046] In this technical solution, the battery module to be compressed is placed between the second end plate 7 and the pressure plate 4. When the strap 6 is tightened, the battery module is driven to compress the second end plate 7, and then the pressure sensor 3 is compressed through the second end plate 7. Through this structural design, the pressure received by the pressure sensor 3 can be made more uniform and stable, so that the pressure detected by the pressure sensor 3 is more accurate, which improves practicality.

[0047] Embodiment 3:

[0048] This embodiment provides a battery module pressurization test device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0049] Furthermore, both ends of the binding belt 6 pass through the second end plate 7 and the first end plate 2 in sequence and are connected to the winding mechanism.

[0050] In the present technical solution, two through holes are provided on the second end plate 7 and the first end plate 2, and the two ends of the strap 6 pass through the second end plate 7 and the first end plate 2 in sequence through the through holes to be connected to the winding mechanism. This structural design can play a certain role in limiting the strap 6, thereby enhancing the contraction stability of the strap 6, and making the pressure detected by the pressure sensor 3 more accurate.

[0051] Embodiment 4:

[0052] This embodiment provides a battery module pressurization test device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0053] Furthermore, a connecting hole is provided on the pressing plate 4, and the binding belt 6 is connected to the pressing plate 4 by passing through the connecting hole.

[0054] In the technical solution, the connection hole can be set through the pressing plate 4 along the length direction of the pressing plate 4, and the binding belt 6 passes through the connection hole and is connected to the pressing plate 4. Through this structural design, the connection between the pressing plate 4 and the binding belt 6 is ensured to be stable and reliable, and it is also convenient for the staff to install the connection, which is highly practical. In addition, the binding belt 6 can also be bonded to the side of the pressing plate 4 away from the battery module to achieve the connection between the binding belt 6 and the pressing plate 4.

[0055] Embodiment 5:

[0056] This embodiment provides a battery module pressurization test device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0057] Further, the winding mechanism comprises:

[0058] At least one driving member 8, the driving member 8 is mounted on the bracket 1;

[0059] At least one winding member 9 and a driving member 8 are used to control the winding member 9 to rotate to drive the binding belt 6 to contract.

[0060] Furthermore, the driving member 8 is a motor.

[0061] Furthermore, the winding member 9 is a winding disc.

[0062] In the present technical solution, the driving member 8 can be a motor, and the winding member 9 can be a winding disk. The winding disk is provided with a groove for winding the band 6. A rotating shaft is installed on the bracket 1, and the winding disk is installed on the rotating shaft. The motor drives the rotating shaft to rotate to drive the winding disk to rotate, and the winding disk rotates to wind the band 6 to achieve the contraction of the band 6. The number of winding disks can be two, which are respectively installed on two rotating shafts. The two ends of the band 6 are respectively connected to the two winding disks. There can be two motors, which control the rotation of the two rotating shafts separately. There can also be one motor, by arranging a driving gear on the driving end of the motor, and arranging driven gears meshing with the driving gear on the two rotating shafts, and the motor drives the driving gear to rotate to drive the two driven gears to rotate, thereby driving the two rotating shafts to rotate, and the winding disk winds the band 6.

[0063] Embodiment 6:

[0064] This embodiment provides a battery module pressurization test device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0065] Furthermore, there are multiple binding straps 6.

[0066] Furthermore, a plurality of binding straps 6 are arranged parallel to each other.

[0067] In this technical solution, the number of straps 6 can be set according to the number of batteries in the battery module and the battery model, and multiple straps 6 are arranged parallel to each other. Through this structural design, when multiple straps 6 are contracted to drive the pressure plate 4 to squeeze the battery module, the pressure on the battery at each position can be kept uniform.

[0068] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A battery module pressurization test device, characterized in that: include: A bracket (1), the bracket (1) being used to place the battery module to be compacted; A pressure sensing assembly, the pressure sensing assembly comprising a first end plate (2) and a pressure sensor (3), the first end plate (2) being arranged on a bracket (1), and the pressure sensor (3) being arranged on one side of the first end plate (2); A tightening and pressurizing assembly, the tightening and pressurizing assembly comprising a pressing plate (4), an elastic member (5) and a binding band (6), the pressing plate (4) being connected to the bracket (1) via the elastic member (5), the battery module to be pressed being located between the pressing plate (4) and the pressure sensor (3), the binding band (6) being connected to the pressing plate (4) and surrounding the outside of the battery module to be pressed; A winding mechanism, the winding mechanism being mounted on the bracket (1) and being located on the other side of the first end plate (2), the driving end of the winding mechanism being connected to the binding belt (6); A control unit controls the operating state of the winding mechanism according to the pressure detected by the pressure sensor (3).

2. The battery module pressurization test device according to claim 1, characterized in that: The pressure sensing assembly further comprises: A second end plate (7), the second end plate (7) being movably arranged on the bracket (1); Wherein, the pressure sensor (3) is located between the first end plate (2) and the second end plate (7).

3. The battery module pressurization test device according to claim 2, characterized in that: Both ends of the binding belt (6) pass through the second end plate (7) and the first end plate (2) in sequence and are connected to the winding mechanism.

4. The battery module pressurization test device according to claim 1, characterized in that: The pressing plate (4) is provided with a connecting hole, and the binding belt (6) is connected to the pressing plate (4) by passing through the connecting hole.

5. The battery module pressurization test device according to claim 1, characterized in that: The winding mechanism comprises: at least one driving member (8), wherein the driving member (8) is mounted on the bracket (1); At least one winding member (9), the driving member (8) is used to control the winding member (9) to rotate so as to drive the binding belt (6) to contract.

6. The battery module pressurization test device according to claim 5, characterized in that: The driving member (8) is a motor.

7. The battery module pressurization test device according to claim 5, characterized in that: The winding member (9) is a winding disc.

8. The battery module pressurization test device according to claim 1, characterized in that: There are a plurality of binding straps (6).

9. The battery module pressurization test device according to claim 8, characterized in that: A plurality of the binding straps (6) are arranged parallel to each other.

Images