Battery cell electric quantity equalization controller

Abstract

The utility model discloses a battery cell electric quantity equalization controller in the battery electric quantity equalization industry. Comprising a protective shell, lower mounting blocks are mounted at four corners of the upper portion of the protective shell, heat dissipation plates are mounted at the left end and the right end of the protective shell, a top cover is mounted above the outer portion of the protective shell, upper mounting blocks are mounted at four corners of the lower portion of the top cover, heat dissipation holes are formed in the upper portion of the top cover, a wire arrangement plate is mounted in front of the protective shell, and a wire fixing groove is formed in the upper portion of the wire arrangement plate. A wire fixing plate is arranged above the wire arranging plate, an electric quantity balancing instrument is arranged in the protective shell, fixing devices are arranged on the two sides of the left end of the electric quantity balancing instrument, fixing bases are arranged at the front ends of the fixing devices, buffer grooves are formed in the inner bottom face of the protective shell, buffer springs are arranged above the buffer grooves, and buffer clamping columns are arranged above the buffer springs. According to the device, short circuit caused by wire winding and collision in the carrying process can be prevented, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of battery power balancing, in particular to a battery single cell power balancing controller. Background Art

[0002] A method of actively balancing the individual differences in capacity and voltage differences caused by the self-discharge rate during the use of the battery. Its main function is to actively balance the differences between battery cells inside the battery pack, whether the battery pack is charging, discharging or placed, so as to eliminate various inconsistencies caused by the battery itself and during use after the battery is grouped. However, since the energy transfer during the balancing process will generate heat loss due to the power characteristics of the balancing power source itself, as well as the change of polarization internal resistance in the electrochemical characteristics of the battery, the problem cannot be truly solved by a simple energy balancing method. The significance of battery balancing is to use power electronics technology to keep the voltage deviation of lithium-ion battery cells or battery packs within the expected range, thereby ensuring that each single cell remains in the same state during normal use to avoid overcharging and over-discharging.

[0003] However, the existing technology has the following problems:

[0004] 1. Existing power equalizers are directly connected to the battery through wires. Since all battery cells need to be connected to the power equalizer, if there are too many wires, they will be entangled, and long-term use may cause problems such as looseness and poor contact;

[0005] 2. The existing power balancer needs to be transported during use. The current power balancer has no protective structure and is easily bumped during transportation, thereby affecting its service life. Utility Model Content

[0006] The utility model aims to provide a battery cell charge balancing controller to solve the above-mentioned problems of wire winding and collision during transportation.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a battery single cell charge balancing controller, comprising a protective shell, wherein lower mounting blocks are installed at the upper four corners of the protective shell, heat dissipation plates are installed at the left and right ends of the protective shell, a top cover is installed on the upper part of the outside of the protective shell, upper mounting blocks are installed at the lower four corners of the top cover, heat dissipation holes are opened on the top of the top cover, a wiring board is installed in the front of the protective shell, a wire fixing groove is opened on the top of the wiring board, a wire fixing plate is installed on the top of the wiring board, a charge equalizer is installed inside the protective shell, and fixing devices are installed on both sides of the left end of the charge equalizer, the fixing device is composed of a connecting box, a fixing column, a moving rod, a connecting column, a rotating rod, a fixing rod and a reset spring, a fixing seat is installed at the front end of the fixing device, a buffer groove is opened on the inner bottom surface of the protective shell, a buffer spring is installed above the buffer groove, and a buffer engaging column is installed above the buffer spring.

[0008] As a further solution of the utility model: the four corners of the lower mounting block and the protective housing are an integrated structure, the lower mounting block is provided with threaded holes, and the heat sink is fixed to the outer walls at both ends of the protective housing by bolts. The lower mounting block cooperates with the upper mounting block to install the top cover and the protective housing.

[0009] As a further solution of the utility model: the upper mounting block and the four corners of the top cover are an integrated structure, the upper mounting block is provided with through holes, the upper mounting block and the lower mounting block are connected by bolts, and the heat dissipation holes are evenly arranged above the top cover. The heat dissipation plate cooperates with the heat dissipation holes to form an air duct for internal heat dissipation, and the protective shell cooperates with the top cover to protect the internal structure.

[0010] As a further solution of the utility model: the wiring board is welded to the front end of the protective shell, the wire fixing grooves are evenly opened above the wiring board, the lower end of the wire fixing plate is connected to the wiring board by bolts, and the upper end and the top cover are an integrated structure. The wire fixing grooves are used for wiring, and the wiring board cooperates with the wire fixing plate to fix the wires.

[0011] As a further solution of the utility model: the power equalizer is connected to the external batteries through wires. The power equalizer is used to equalize the power of the battery cells.

[0012] As a further solution of the utility model: the connection box is fixed on both sides above the left end of the power equalizer, the fixed column is connected to the right inner wall of the connection box, the right end of the moving rod passes through the fixed column and the left end is U-shaped, the two connection columns are installed at the upper end of the fork of the moving rod, one end of the rotating rod is rotatably connected to the connection column, and the other end is fixedly connected to the fixed rod, the inner sides of the two fixed rods are connected with reset springs, the fixed rod passes through the left wall of the connection box and is inserted into the inside of the fixed seat, and the fixed seat is installed at the upper end of the protective shell. The fixing device cooperates with the fixed seat to fix the top of the power equalizer.

[0013] As a further solution of the utility model: the buffer grooves are evenly arranged and opened on the lower inner wall of the protective shell, the buffer springs are placed at the bottom of the buffer grooves, the buffer clamping posts are connected to the buffer grooves and connected to the buffer springs below, and connected to the bottom of the power equalizer above. The buffer grooves are used to place the buffer springs and the buffer clamping posts, and the buffer springs and the buffer clamping posts are used to buffer the impact of the power equalizer when it is transported.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. In the utility model, a wiring board and a wire fixing groove are provided at the front end of the protective housing, and a wire fixing plate is provided on the upper part, which can separate the wires well, prevent the wires from being entangled and causing a short circuit, and improve the service life of the wires;

[0016] 2. In the utility model, by arranging a fixing device above the power equalizer and arranging a buffer groove, a buffer spring and a buffer engaging column below, it is possible to prevent collisions during transportation and protect the power equalizer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is an exploded schematic diagram of the top cover structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the protective housing of the utility model;

[0020] Figure 4 for Figure 2 A-shaped enlarged schematic diagram of the structure.

[0021] In the figure: 1. protective shell; 2. lower mounting block; 3. heat sink; 4. top cover; 5. upper mounting block; 6. heat dissipation hole; 7. wiring board; 8. wire fixing groove; 9. wire fixing plate; 10. power equalizer; 11. fixing device; 1101. connection box; 1102. fixing column; 1103. moving rod; 1104. connecting column; 1105. rotating rod; 1106. fixing rod; 1107. reset spring; 12. fixing seat; 13. buffer groove; 14. buffer spring; 15. buffer locking column. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 In an embodiment of the utility model, a battery cell charge balancing controller includes a protective shell 1, wherein lower mounting blocks 2 are mounted at the upper four corners of the protective shell 1, heat dissipation plates 3 are mounted at the left and right ends of the protective shell 1, a top cover 4 is mounted above the outer part of the protective shell 1, upper mounting blocks 5 are mounted at the lower four corners of the top cover 4, heat dissipation holes 6 are opened above the top cover 4, a wiring board 7 is mounted in front of the protective shell 1, a wire fixing groove 8 is opened above the wiring board 7, a wire fixing plate 9 is mounted above the wiring board 7, a charge balancing instrument 10 is mounted inside the protective shell 1, and fixing devices 11 are mounted on both sides of the left end of the charge balancing instrument 10, and the fixing device 11 is composed of a connection box 1101, a fixing column 1102, a moving rod 1103, a connection column 1104, The device is composed of a rotating rod 1105, a fixing rod 1106 and a reset spring 1107. A fixing seat 12 is installed at the front end of the fixing device 11, a buffer groove 13 is opened on the inner bottom surface of the protective shell 1, a buffer spring 14 is installed above the buffer groove 13, and a buffer clamping column 15 is installed above the buffer spring 14. The device is provided with a wiring board 7 and a wire fixing groove 8 at the front end of the protective shell 1, and a wire fixing plate 9 is arranged on the top, which can separate the wires well, prevent the wires from being entangled and causing a short circuit, and improve the service life of the wires; by arranging the fixing device 11 above the power equalizer 10 and arranging the buffer groove 13, the buffer spring 14 and the buffer clamping column 15 below, it can prevent bumps during transportation and protect the power equalizer 10.

[0024] The four corners of the lower mounting block 2 and the protective housing 1 are an integrated structure, threaded holes are provided on the lower mounting block 2, and the heat sink 3 is fixed to the outer wall at both ends of the protective housing 1 by bolts. The lower mounting block 2 cooperates with the upper mounting block 5 to install the top cover 4 and the protective housing 1.

[0025] The upper mounting block 5 and the four corners of the top cover 4 are an integrated structure, a through hole is opened on the upper mounting block 5, the upper mounting block 5 and the lower mounting block 2 are connected by bolts, and the heat dissipation holes 6 are evenly arranged above the top cover 4. The heat dissipation plate 3 cooperates with the heat dissipation holes 6 to form an air duct for internal heat dissipation, and the protective housing 1 cooperates with the top cover 4 to protect the internal structure.

[0026] The wiring board 7 is welded to the front end of the protective housing 1, the wire fixing grooves 8 are evenly opened above the wiring board 7, the lower end of the wire fixing plate 9 is connected to the wiring board 7 by bolts, and the upper end is an integrated structure with the top cover 4. The wire fixing grooves 8 are used for wiring, and the wiring board 7 cooperates with the wire fixing plate 9 to fix the wires.

[0027] The power equalizer 10 is connected to the external batteries through wires. The power equalizer 10 is used to equalize the power of the battery cells.

[0028] The connection box 1101 is fixed on both sides above the left end of the power equalizer 10, the fixed column 1102 is connected to the right inner wall of the connection box 1101, the right end of the moving rod 1103 passes through the fixed column 1102 and the left end is U-shaped, two connection columns 1104 are installed at the upper end of the fork of the moving rod 1103, one end of the rotating rod 1105 is rotatably connected to the connection column 1104, and the other end is fixedly connected to the fixed rod 1106, and the inner sides of the two fixed rods 1106 are connected with a reset spring 1107, and the fixed rod 1106 passes through the left wall of the connection box 1101 and is inserted into the inside of the fixed seat 12, and the fixed seat 12 is installed at the upper end of the protective shell 1. The fixing device 11 cooperates with the fixed seat 12 to fix the top of the power equalizer 10.

[0029] The buffer grooves 13 are evenly arranged and opened on the lower inner wall of the protective housing 1, the buffer springs 14 are placed at the bottom of the buffer grooves 13, and the buffer clamping columns 15 are connected to the buffer grooves 13 and connected to the buffer springs 14 at the bottom and connected to the bottom of the power equalizer 10 at the top. The buffer grooves 13 are used to place the buffer springs 14 and the buffer clamping columns 15, and the buffer springs 14 and the buffer clamping columns 15 are used to buffer the impact of the power equalizer 10 when it is transported.

[0030] The working principle and use process of the utility model are as follows: first, check that the power equalizer 10 operates normally. After the check is correct, pull the moving rod 1103 outward, and the connecting column 1104 on the moving rod 1103 drives the rotating rod 1105 to rotate, thereby driving the fixing rod 1106 to rotate. At this time, the reset spring 1107 is compressed, and the fixing rod 1106 is inserted into the fixing seat 12 to fix the upper part of the power equalizer 10, put the wire into the wire fixing groove 8, fix the top cover 4 and the wire fixing plate 9, and when it needs to be transported, the elasticity of the buffer spring 14 can eliminate the force on the power equalizer 10 to prevent it from being damaged by collision. The device is provided with a wiring board 7 and a wire fixing groove 8 at the front end of the protective shell 1, and a wire fixing plate 9 is provided on the top, which can separate the wires well, prevent the wires from being entangled and causing a short circuit, and improve the service life of the wires; by arranging a fixing device 11 above the power equalizer 10, and arranging a buffer groove 13, a buffer spring 14 and a buffer clamping column 15 below, it can prevent bumps during transportation and protect the power equalizer 10.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A battery cell charge balancing controller, comprising a protective housing (1), characterized in that: The upper four corners of the protective shell (1) are provided with lower mounting blocks (2), the left and right ends of the protective shell (1) are provided with heat dissipation plates (3), the upper outside of the protective shell (1) is provided with a top cover (4), the lower four corners of the top cover (4) are provided with upper mounting blocks (5), the upper part of the top cover (4) is provided with heat dissipation holes (6), the front of the protective shell (1) is provided with a wiring board (7), the upper part of the wiring board (7) is provided with a wire fixing groove (8), the upper part of the wiring board (7) is provided with a wire fixing plate (9), the interior of the protective shell (1) is provided with a power equalizer (10), the power A fixing device (11) is installed on both sides of the left end of the volume balancer (10), and the fixing device (11) is composed of a connecting box (1101), a fixing column (1102), a moving rod (1103), a connecting column (1104), a rotating rod (1105), a fixing rod (1106) and a reset spring (1107). A fixing seat (12) is installed at the front end of the fixing device (11), and a buffer groove (13) is opened on the inner bottom surface of the protective shell (1), a buffer spring (14) is installed above the buffer groove (13), and a buffer locking column (15) is installed above the buffer spring (14).

2. A battery cell charge balancing controller according to claim 1, characterized in that: The four corners of the lower mounting block (2) and the protective shell (1) are an integrated structure, threaded holes are provided on the lower mounting block (2), and the heat dissipation plate (3) is fixed to the outer walls at both ends of the protective shell (1) by bolts.

3. The battery cell charge balancing controller according to claim 1, characterized in that: The upper mounting block (5) and the four corners of the top cover (4) are an integrated structure, a through hole is opened on the upper mounting block (5), the upper mounting block (5) and the lower mounting block (2) are connected by bolts, and the heat dissipation holes (6) are evenly arranged above the top cover (4).

4. The battery cell charge balancing controller according to claim 1, characterized in that: The wiring board (7) is welded to the front end of the protective shell (1), the wire fixing grooves (8) are evenly opened above the wiring board (7), the lower end of the wire fixing plate (9) is connected to the wiring board (7) by bolts, and the upper end and the top cover (4) are an integrated structure.

5. The battery cell charge balancing controller according to claim 1, characterized in that: The power equalizer (10) is connected to external batteries via wires.

6. The battery cell charge balancing controller according to claim 1, characterized in that: The connection box (1101) is fixed on both sides above the left end of the power equalizer (10); the fixed column (1102) is connected to the right inner wall of the connection box (1101); the right end of the movable rod (1103) passes through the fixed column (1102) and the left end is U-shaped; the two connection columns (1104) are installed at the forked upper ends of the movable rod (1103); one end of the rotating rod (1105) is rotatably connected to the connection column (1104) and the other end is fixedly connected to the fixed rod (1106); the inner sides of the two fixed rods (1106) are connected with reset springs (1107); the fixed rod (1106) passes through the left wall of the connection box (1101) and is inserted into the inside of the fixed seat (12); the fixed seat (12) is installed at the upper end of the protective shell (1).

7. The battery cell charge balancing controller according to claim 1, characterized in that: The buffer grooves (13) are evenly arranged on the lower inner wall of the protective shell (1), the buffer springs (14) are placed in the bottom ends of the buffer grooves (13), the buffer engaging columns (15) are cooperatively connected to the buffer grooves (13) and the buffer springs (14) are connected at the bottom thereof and at the top thereof to the bottom of the power equalizer (10).

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