Lithium battery control unit, module fixing device and lithium battery

Abstract

The utility model discloses a lithium battery control unit and module fixing device, which comprises a base, a positioning groove for accommodating a lithium battery module and a plurality of mounting positions for mounting the lithium battery control unit are arranged on the base, the lithium battery control unit is mounted on the base through fasteners, and the mounting positions are distributed on the same side of the positioning groove. According to the lithium battery control unit and module fixing device disclosed by the utility model, the lithium battery control unit and the module are fixed on the same device, so that the space utilization rate in a battery pack is improved, the production efficiency can be improved, and meanwhile, the production cost is reduced. The utility model also discloses a lithium battery.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium batteries. Specifically, the utility model relates to a lithium battery control unit, a module fixing device and a lithium battery. Background Art

[0002] Lithium batteries are combined into modules through a certain series-parallel relationship. After the modules are fixed, charging and discharging can be carried out through the control of electrical components to provide electrical energy for the outside. Existing lithium battery modules and electrical components mostly adopt a separate fixing mode, which not only wastes the space inside the battery pack but also reduces the production efficiency. Specifically, the existing technology has the following disadvantages:

[0003] 1. The control units such as electrical components need to be fixed separately, and the lithium battery modules also need a separate fixing plate for fixation; the two are fixed separately, wasting the space resources inside the battery pack;

[0004] 2. The separate fixation of the two reduces the production efficiency;

[0005] 3. The separate fixation of the two increases the production cost.

[0006] Chinese Patent with application number 202210534065.9 discloses a control unit, a vehicle-mounted battery pack and a related assembly method. The vehicle-mounted battery pack (3) includes at least one module (12), and the module (12) has a plurality of electrochemical battery monomers supported on a support structure (15); the control unit (13) includes: a planar support substrate (37) made of at least partially insulating material; a plurality of sensor elements (14); wherein the sensor elements (14) are arranged in two rows on the support substrate (37) so that after the unit is installed on the vehicle battery pack (3), each sensor element (14) is positioned in the region of the corresponding terminal post of each electrochemical battery monomer; wherein the sensor element (14) includes at least one voltage sensing device, and the voltage sensing device includes at least two conductive and elastically deformable contact elements (39), and the contact elements (39) are configured to be elastically compressed between the planar support substrate (37) and the corresponding terminal post.

[0007] It is desired to provide an improved lithium battery control unit and module fixing device, especially regarding how to improve the space utilization rate inside the battery pack. Summary of the Utility Model

[0008] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a lithium battery control unit and a module fixing device, with the aim of improving the space utilization rate inside the battery pack.

[0009] To achieve the above object, the technical solution adopted by the present utility model is as follows: a lithium battery control unit and module fixing device, including a base, on which a positioning groove for accommodating a lithium battery module and a plurality of installation positions for installing a lithium battery control unit are provided. The lithium battery control unit is installed on the base through fasteners, and the installation positions are distributed on the same side of the positioning groove.

[0010] The positioning groove is a rectangular groove.

[0011] The lithium battery control unit includes a power module and a battery management system, and the power module and the battery management system are respectively installed on the base through a first press rivet bolt and a second press rivet bolt.

[0012] The lithium battery control unit includes a pre-charge resistor, a charge relay, a discharge relay, and a pre-charge relay, and the pre-charge resistor, the charge relay, the discharge relay, and the pre-charge relay are respectively installed on the base through a first press rivet nut, a second press rivet nut, a third press rivet nut, and a fourth press rivet nut.

[0013] The lithium battery control unit includes a fuse, and the fuse is installed on the base through a third press rivet bolt.

[0014] The lithium battery control unit includes a shunt, and the shunt is installed on the base through a fifth press rivet nut.

[0015] The base includes a first bending plate, a second bending plate, a third bending plate, and a fourth bending plate. There are two second bending plates, and the first bending plate, the third bending plate, and the fourth bending plate are located between the two second bending plates. The third bending plate is located between the first bending plate and the fourth bending plate.

[0016] The base further includes flanges. A plurality of flanges are provided, and the positioning groove is formed by being surrounded by the flanges. The flanges are connected to the first bending plate, the second bending plate, the third bending plate, and the fourth bending plate.

[0017] The present utility model also provides a lithium battery, including the lithium battery control unit and module fixing device described above.

[0018] For the lithium battery control unit and module fixing device of the present utility model, the lithium battery control unit and the module are fixed on the same device, which not only improves the space utilization rate in the battery pack, but also can improve the production efficiency and reduce the production cost at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] This specification includes the following drawings, and the shown contents are respectively:

[0020] Figure 1 It is a schematic diagram of the use state of the lithium battery control unit and module fixing device of the present utility model;

[0021] Figure 2 It is a schematic structural diagram of the lithium battery control unit and module fixing device of the present utility model;

[0022] Figure 3 It is the front view of the lithium battery control unit and module fixing device of the present utility model;

[0023] Figure 4 It is the top view of the lithium battery control unit and module fixing device of the present utility model;

[0024] The markings in the figure are: 1, lithium battery module; 2, power module; 3, battery management system; 4, pre-charge relay; 5, pre-charge resistor; 6, fuse; 7, charge relay; 8, discharge relay; 9, shunt; 10, lithium battery control unit and module fixing device; 11, first rivet bolt; 12, second rivet bolt; 13, first rivet nut; 14, second rivet nut; 15, third rivet nut; 16, fourth rivet nut; 17, third rivet bolt; 18, fifth rivet nut; 19, mounting hole; 21, first fixing hole; 22, second fixing hole; 23, third fixing hole; 24, fifth bending plate; 25, sixth rivet nut; 31, seventh rivet nut; 32, hem; 41, first bending plate; 42, second bending plate; 43, third bending plate; 44, fourth bending plate. Specific embodiments

[0025] Next, with reference to the accompanying drawings, through the description of the embodiments, the specific embodiments of the present utility model will be further described in detail. The purpose is to help those skilled in the art have a more complete, accurate and in-depth understanding of the concept and technical solution of the present utility model, and to facilitate its implementation.

[0026] It should be noted that in the following embodiments, the "first", "second", "third", "fourth" and "fifth" do not represent an absolute distinction relationship in terms of structure and / or function, nor do they represent the execution order, but are only for the convenience of description.

[0027] As Figures 1 to 4 shown, the present utility model provides a lithium battery control unit and module fixing device, including a base. The base is provided with a positioning groove for accommodating the lithium battery module 1 and a plurality of installation positions for installing the lithium battery control unit. The lithium battery control unit is installed on the base through fasteners. The installation positions of the lithium battery control unit are distributed on the same side of the positioning groove, that is, the lithium battery control unit can be installed on the same side of the lithium battery module 1.

[0028] Specifically, as Figures 1 to 4As shown in the figure, the lithium battery control unit includes a power module 2 and a battery management system 3. The power module 2 and the battery management system 3 are respectively installed on the base by a first rivet bolt 11 and a second rivet bolt 12.

[0029] As Figures 1 to 4 shown in the figure, the lithium battery control unit further includes a pre-charge resistor 5, a charging relay 7, a discharging relay 8 and a pre-charge relay 4. The pre-charge resistor 5, the charging relay 7, the discharging relay 8 and the pre-charge relay 4 are respectively installed on the base by a first rivet nut 13, a second rivet nut 14, a third rivet nut 15 and a fourth rivet nut 16.

[0030] As Figures 1 to 4 shown in the figure, the lithium battery control unit further includes a fuse 6. The fuse 6 is installed on the base by a third rivet bolt 17.

[0031] As Figures 1 to 4 shown in the figure, the lithium battery control unit further includes a shunt 9. The shunt 9 is installed on the base by a fifth rivet nut 18.

[0032] As Figures 1 to 4 shown in the figure, multiple mounting holes 19 are provided at both ends of the base. The mounting holes 19 are used for fixing the lithium battery control unit and the module fixing device. The mounting holes 19 are kidney-shaped holes, which are used for bolts to pass through. The length of the mounting holes 19 is greater than the diameter of the bolts. Through the positioning of the kidney-shaped holes, the rapid installation of the lithium battery control unit and the module fixing device can be realized.

[0033] As Figures 1 to 4 shown in the figure, the base includes a first bending plate 41, a second bending plate 42, a third bending plate 43 and a fourth bending plate 44. The first bending plate 41, the second bending plate 42, the third bending plate 43 and the fourth bending plate 44 are all steel plates. Two second bending plates 42 are provided and the length directions of the two second bending plates 42 are parallel. The first bending plate 41, the third bending plate 43 and the fourth bending plate 44 are located between the two second bending plates 42 and the first bending plate 41, the third bending plate 43 and the fourth bending plate 44 are welded to the two second bending plates 42. The third bending plate 43 is located between the first bending plate 41 and the fourth bending plate 44, and the third bending plate 43 is welded to the first bending plate 41 and the fourth bending plate 44. The base with this structure has high structural strength and strong load-bearing capacity.

[0034] As Figures 1 to 4 shown in the figure, the base further includes flanges 32. Four flanges 32 are provided and the positioning groove is a rectangular groove surrounded by the four flanges 32. The four flanges 32 are arranged in a rectangle, and the flanges 32 are welded to the first bending plate 41, the second bending plate 42, the third bending plate 43 and the fourth bending plate 44.

[0035] As Figures 1 to 4As shown in the figure, the base is provided with a first fixing hole 21, a second fixing hole 22 and a third fixing hole 23. The first fixing hole 21, the second fixing hole 22 and the third fixing hole 23 are cable tie and wire harness fixing holes, enabling the device to have functions such as cable tie fixing and module limiting at the same time.

[0036] As Figures 1 to 4 shown in the figure, the base is provided with a fifth bending plate 24, a sixth rivet nut 25 and a seventh rivet nut 31. The fifth bending plate 24 is a series copper bar fixing device. The sixth rivet nut 25 is a reserved fixing hole. The seventh rivet nut 31 is used for fixing the lithium battery module 1 on the base.

[0037] The lithium battery control unit and module fixing device with the above structure has the following advantages:

[0038] 1. By welding the device for fixing the components of the lithium battery control unit and the module fixing device together, not only the production efficiency is improved, but also the internal space of the battery pack is saved, and the production cost is reduced at the same time.

[0039] 2. The fixing holes adopt the waist hole fixing method, which can improve the installation efficiency.

[0040] 3. The bending edge formed by welding has the function of limiting the module, and the module can be installed quickly.

[0041] The present invention also provides a lithium battery, including the lithium battery control unit and module fixing device with the above structure. The specific structure of this lithium battery control unit and module fixing device can be referred to Figures 1 to 4 , which will not be elaborated here. Since the lithium battery of the present invention includes the lithium battery control unit and module fixing device in the above embodiments, it has all the advantages of the above lithium battery control unit and module fixing device.

[0042] The present invention has been described exemplarily in combination with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above methods. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present invention; or without improvement, the above concept and technical solution of the present invention are directly applied to other occasions, all are within the protection scope of the present invention.

Claims

1. A lithium battery control unit and module fixing device, characterized in that: It includes a base, on which are arranged a positioning groove for accommodating a lithium battery module and a plurality of installation positions for installing a lithium battery control unit. The lithium battery control unit is installed on the base through fasteners, and the installation positions are distributed on the same side of the positioning groove.

2. The lithium battery control unit and module fixing device according to claim 1, characterized in that: The positioning groove is a rectangular groove.

3. The lithium battery control unit and module fixing device according to claim 1, characterized in that: The lithium battery control unit includes a power module and a battery management system, and the power module and the battery management system are respectively mounted on the base through a first rivet bolt and a second rivet bolt.

4. The lithium battery control unit and module fixing device according to any one of claims 1 to 3, characterized in that: The lithium battery control unit includes a pre-charging resistor, a charging relay, a discharging relay and a pre-charging relay, which are respectively mounted on the base through a first rivet nut, a second rivet nut, a third rivet nut and a fourth rivet nut.

5. The lithium battery control unit and module fixing device according to any one of claims 1 to 3, characterized in that: The lithium battery control unit includes a fuse, which is mounted on the base through a third rivet bolt.

6. The lithium battery control unit and module fixing device according to any one of claims 1 to 3, characterized in that: The lithium battery control unit comprises a shunt, and the shunt is mounted on the base through a fifth rivet nut.

7. The lithium battery control unit and module fixing device according to any one of claims 1 to 3, characterized in that: The base includes a first bending plate, a second bending plate, a third bending plate and a fourth bending plate. Two second bending plates are provided. The first bending plate, the third bending plate and the fourth bending plate are located between the two second bending plates. The third bending plate is located between the first bending plate and the fourth bending plate.

8. The lithium battery control unit and module fixing device according to claim 7, characterized in that: The base also includes a folding edge, a plurality of folding edges are provided, and the positioning groove is formed by surrounding the folding edges, and the folding edges are connected to the first bending plate, the second bending plate, the third bending plate and the fourth bending plate.

9. A lithium battery, characterized in that: It comprises a lithium battery control unit and a module fixing device as described in any one of claims 1 to 8.

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