CTP battery without end cover

Abstract

According to the CTP battery without the end cover, a left adjusting fixing plate, a right adjusting fixing plate, an upper fixing support and a front adjusting fixing plate are arranged, a shell of a universal size is selected, and the shell of the uniform size is adopted during assembling according to batteries of different brands and different powers; by adjusting the positions of the left-right adjusting fixing plate and the front adjusting fixing plate in the shell, as the area of the upper fixing bracket is matched with that of the shell, the upper fixing bracket can cover all the battery cells to fix the upper end surfaces of the battery cells, so that different numbers of battery cells can be fixed, the flexibility is high, and only one shell mold needs to be opened; the mold opening cost is reduced, a plurality of adjustable fixing plates are set up to fix a plurality of battery cells, the fixing mode is simple, in addition, the unified shell does not need to be additionally selected during assembly, and the assembly efficiency is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of batteries, and in particular relates to a CTP battery without end caps. Background Art

[0002] Large batteries generally include: a battery box shell, multiple battery cells, a power circuit board, and a battery box panel. The power circuit board is used to control the input and output power of the battery cells. The battery box panel is provided with input terminals and output terminals. However, due to the different numbers of battery cells built into batteries of different brands and specifications on the market, different sizes of battery box shells are required to match these batteries of different brands and different powers, which has poor versatility, resulting in a large variety of battery shells and increased mold opening costs. In addition, the corresponding battery box shell needs to be selected during assembly, which increases the assembly steps and reduces the assembly efficiency. In addition, end covers and steel belts need to be installed in the existing battery box shell to fix the battery cells. The assembly cost is relatively high, and the fixing method is relatively complicated, which affects the assembly steps. In addition, the existing large batteries will generate more heat due to their high working power, and the existing batteries have not been well optimized for heat dissipation, resulting in a lot of heat accumulation inside the battery box shell, causing the shell to often become hot, affecting the service life of the internal battery cells. Utility Model Content

[0003] (I) Purpose of the utility model

[0004] In order to overcome the above shortcomings, the purpose of the utility model is to provide a CTP end capless battery to solve the technical problems that the existing battery box shell has poor versatility, the fixing method is relatively complicated, different sizes of battery box shells need to be configured during assembly, which increases the cost of mold opening, and different sizes of battery box shells need to be selected during the assembly process, affecting the assembly efficiency.

[0005] (II) Technical solution

[0006] To achieve the above objectives, the technical solutions provided by this application are as follows:

[0007] A CTP battery without end caps, comprising: a shell with an opening at the front end, a plurality of battery cells arranged in sequence in the shell, wherein the battery cells corresponding to the rear side wall of the shell abut against the rear side wall, two left and right adjustment fixing plates symmetrically and movably arranged in the shell, each of the left and right adjustment fixing plates abuts against the left and right side surfaces of a plurality of battery cells and one end is detachably connected to the rear side wall of the shell, an upper fixing bracket arranged in the shell and matching the area of ​​the shell, the upper fixing bracket abuts against the upper end surfaces of the plurality of battery cells and one end is detachably connected to the rear side wall of the shell, a front adjustment fixing plate movably arranged in the shell and located at the front end of the shell, the front adjustment fixing plate abuts against the front side surfaces of the plurality of battery cells and is detachably connected to the shell, the front adjustment fixing plate is also detachably connected to the left and right adjustment fixing plates and the other end of the upper fixing bracket, and also comprises a power circuit board arranged on the front adjustment fixing plate and electrically connected to the battery cells, and a battery box panel arranged at the front end opening of the shell and connected to the shell, the battery box panel is electrically connected to the battery cells and the power circuit board;

[0008] The present application sets left and right adjustable fixing plates, an upper fixing bracket and a front adjustable fixing plate, selects a universal-sized shell, and uses a uniform-sized shell for assembling batteries of different brands and different powers. Then, by adjusting the positions of the left and right adjustable fixing plates and the front adjustable fixing plate in the shell, since the area of ​​the upper fixing bracket matches the shell, all battery cells can be covered to fix the upper end surfaces of the battery cells. In this way, different numbers of battery cells can be fixed, and the flexibility is high. Therefore, only one shell mold needs to be opened, which reduces the cost of opening the mold. Multiple battery cells can be fixed by building multiple adjustable fixing plates, and the fixing method is simple. In addition, the uniform shell does not require additional selection during assembly, thereby ensuring assembly efficiency.

[0009] In some embodiments, it further includes: high temperature resistant and fireproof foam disposed between the battery cell and the rear side wall of the housing and / or between adjacent battery cells;

[0010] By arranging high-temperature resistant fireproof cotton between the battery cell and the rear side wall of the shell and / or between adjacent battery cells, the high-temperature resistant fireproof cotton buffer has a buffering effect. When the battery is subjected to external force collision, it can reduce the impact between the battery cell and the shell and between two adjacent battery cells. When adjacent battery cells bulge or expand and squeeze in extreme cases, it can also play a buffering role. In addition, the high-temperature resistant fireproof cotton can also play the role of insulation, flame retardancy and high temperature resistance, so as to avoid burning the adjacent battery cells when a single battery cell catches fire, thereby ensuring the stability of the battery cell operation.

[0011] In some embodiments, first vents are correspondingly provided on the left and right side walls of the housing, and cell air ducts are formed between adjacent cells, with two ends corresponding to the first vents on the left and right side walls respectively.

[0012] By correspondingly opening first vents on the left and right side walls of the housing and opening air ducts between adjacent battery cells, convection can be formed to solve the heat dissipation problem between adjacent battery cells.

[0013] In some embodiments, a second vent is provided on the battery box panel;

[0014] By adding a second vent, the entire shell can be ventilated and heat-dissipated on three sides, further improving the heat dissipation effect.

[0015] In some embodiments, it further includes: a handle disposed on the battery box panel;

[0016] The addition of a handle makes it easier to extract the entire battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the CTP battery without end caps of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the CTP battery without end cover without the upper cover of the utility model;

[0019] Figure 3 It is a cross-sectional view of the CTP battery without end caps of the utility model;

[0020] Figure 4 It is an exploded view of the CTP battery without end caps of the utility model;

[0021] Figure 5 It is an assembly diagram of the left and right adjustment fixing plates, the upper fixing bracket and the front adjustment fixing plate in the CTP battery without end cover of the utility model;

[0022] Figure 6 It is a structural schematic diagram of a bottom shell of a CTP battery without end cover of the utility model.

[0023] Reference numerals:

[0024] 1. Outer shell; 101. Bottom shell; 1011. First vent; 102. Upper cover; 2. Left and right adjustment fixing plates; 3. Upper fixing bracket; 4. Front adjustment fixing plate; 5. Battery box panel; 6. Insulation protection sheet; 7. Power circuit board; 8. Battery cell; 9. Air duct; 10. Handle. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0026] The utility model provides a CTP battery without end caps, comprising: a shell 1 with an opening at the front end, a plurality of battery cells 8 arranged in sequence in the shell 1, wherein the battery cells 8 corresponding to the rear side wall of the shell 1 abut against the rear side wall, two left and right adjustment fixing plates 2 symmetrically and movably arranged in the shell 1, each left and right adjustment fixing plate 2 abuts against the left and right side surfaces of the plurality of battery cells 8 and one end is detachably connected to the rear side wall of the shell 1, an upper fixing bracket 3 arranged in the shell 1 and matching the area of ​​the shell 1, the upper fixing bracket 3 abuts against the upper end surfaces of the plurality of battery cells 8 and one end is connected to the shell 1 is detachably connected to the rear side wall of the shell 1, a front adjustment fixing plate 4 is transversely arranged in the shell 1 and located at the front end of the shell 1, the front adjustment fixing plate 4 is abutted against the front side surfaces of the plurality of battery cells 8 and the two ends are detachably connected to the two side walls of the shell 1 respectively, the front adjustment fixing plate 4 is also detachably connected to the left and right adjustment fixing plates 2 and the other end of the upper fixing bracket 3, and also includes a power circuit board 7 electrically connected to the battery cell 8 arranged on the front adjustment fixing plate 4 and a battery box panel 5 connected to the shell 1 arranged at the front end opening of the shell 1, and the battery box panel 5 is electrically connected to the battery cell 8 and the power circuit board.

[0027] Specifically, the housing 1 includes: a bottom shell 101 and an upper cover 102 arranged on top of the bottom shell 101. The left and right sides and the rear side of the bottom shell 101 are respectively provided with left and right side walls and a rear side wall. The front side wall is omitted to facilitate the adjustment of the position of the front adjustment fixing plate 4.

[0028] Specifically, the shell 1 of the present application needs to be of a suitable size so as to be able to carry a number of battery cells 8 of different brands and specifications commonly found on the market. The upper fixed bracket 3 is adapted to the size of the shell 1 and can cover a number of battery cells 8 of different brands and specifications commonly found on the market.

[0029] Specifically, a plurality of battery cells 8 are connected in series and then electrically connected to a power circuit board 7 . The power circuit board 7 is electrically connected to a battery box panel 5 . The operation of the CTP battery can be controlled by manipulating the battery box panel 5 .

[0030] Preferably, a high temperature resistant insulating protective sheet 6 is placed on the bottom wall of the bottom shell 101 .

[0031] Specifically, a plurality of screw mounting holes are provided at different positions of the side walls of the housing 1 and the front adjustment fixing plate 4 , so that the left and right adjustment fixing plates 2 and the front adjustment fixing plate 4 can be fixed to different positions to adapt to fixing different numbers of battery cells 8 .

[0032] Preferably, high temperature resistant fireproof foam can be arranged between the battery cell 8 and the rear side wall of the housing 1, between adjacent battery cells 8, or between the battery cell 8 and the rear side wall of the housing 1 and between adjacent battery cells 8, which can play a role of buffer protection and insulation and flame retardancy. Preferably, high temperature resistant fireproof foam can also be arranged between the battery cell 8 and each adjustment and fixing plate to reduce squeezing. Specifically, the thickness of the high temperature resistant fireproof foam can be selected to be 3mm.

[0033] Specifically, the assembly process of 16 battery cells 8 is as follows:

[0034] Before placing the first battery cell 8, first stick the first 3mm thick high temperature resistant fireproof foam on the rear side wall of the outer shell 1, and then put the first battery cell 8 directly into the innermost part of the outer shell 1, and the rear side wall is used to fix the side of the battery cell 8, and then put the second battery cell 8, and stick the second 3mm high temperature resistant fireproof foam between the adjacent battery cells 8, and then put the third battery cell 8, and stick the third 3mm high temperature resistant fireproof foam, and so on until the eighth battery cell 8 is placed on the eighth high temperature resistant fireproof foam, and then attach the ninth 3mm high temperature resistant fireproof foam. At this time, the eight battery cells 8 are arranged in sequence to form a row, and the eight cells in the other two rows are arranged in the same way. After completing the placement of the battery cells 8, finally install the left and right adjustment fixing plates 2, the upper fixing bracket 3 and the front adjustment fixing plate 4, and tighten them with screws at the connection. Using multiple adjustment fixing plates and the upper fixing bracket 3 to form a very simple fixing structure, replacing the traditional end cover and steel belt to solve the battery cell 8, it has greater flexibility, high versatility, and relatively low assembly cost.

[0035] Preferably, first vents 1011 are correspondingly opened on the left and right side walls of the outer shell 1. Since high-temperature resistant and fire-proof foam is arranged between adjacent battery cells 8, battery cell 8 air ducts 9 are formed between adjacent battery cells 8. Both ends of the battery cell 8 air duct 9 correspond to the first vents 1011 on the left and right side walls respectively. External cold air enters from the first vent 1011 on one side, passes through the battery cell 8 air duct 9 and is finally blown out from the first vent 1011 on the other side, which can take away the heat generated by the battery cell 8 when working.

[0036] Furthermore, a second ventilation hole is provided on the battery box panel.

[0037] Preferably, a handle 10 is provided on the battery box panel 5 .

[0038] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. A CTP battery without end cap, characterized in that: include: A shell (1) with an opening at the front end, a plurality of battery cells (8) arranged in sequence in the shell (1), wherein the battery cells (8) corresponding to the rear side wall of the shell (1) abut against the rear side wall, two left and right adjustment fixing plates (2) symmetrically and movably arranged in the shell (1), each of the left and right adjustment fixing plates (2) abuts against the left and right side surfaces of the plurality of battery cells (8) and one end is detachably connected to the rear side wall of the shell (1), an upper fixing bracket (3) arranged in the shell (1) and matching the area of ​​the shell (1), the upper fixing bracket (3) abuts against the upper end surfaces of the plurality of battery cells (8) and one end is detachably connected to the rear side wall of the shell (1), and a plurality of battery cells (8) are provided in a lateral direction. A front adjustment fixing plate (4) is movably arranged in the shell (1) and located at the front end of the shell (1); the front adjustment fixing plate (4) abuts against the front side surfaces of the plurality of battery cells (8) and is detachably connected to the shell (1); the front adjustment fixing plate (4) is also detachably connected to the left and right adjustment fixing plates (2) and the other end of the upper fixing bracket (3); and further comprises a power circuit board (7) electrically connected to the battery cells (8) and arranged on the front adjustment fixing plate (4); and a battery box panel (5) connected to the shell (1) and arranged at the front end opening of the shell (1); the battery box panel (5) is electrically connected to the battery cells (8) and the power circuit board (7).

2. The CTP battery without end cap according to claim 1, characterized in that: Also includes: High temperature resistant and fireproof foam is arranged between the battery core (8) and the rear side wall of the housing (1) and / or between adjacent battery cores (8).

3. The CTP battery without end cap according to claim 2, characterized in that: First ventilation openings (1011) are correspondingly provided on the left and right side walls of the housing (1), and a cell (8) air duct (9) is formed between adjacent cells (8), with two ends corresponding to the first ventilation openings (1011) on the left and right side walls respectively.

4. The CTP battery without end cap according to claim 3, characterized in that: A second ventilation opening is provided on the battery box panel (5).

5. The CTP battery without end cap according to claim 1, characterized in that: Also includes: A handle (10) is arranged on the battery box panel (5).

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