New energy battery detection water-cooling resistor

Abstract

The invention relates to the technical field of battery detection equipment, in particular to a new energy battery detection water-cooling resistor which comprises a shell, a cooling shell arranged in the shell, a water inlet and outlet manifold communicated with the cooling shell, two heat dissipation plates fixedly connected to the cooling shell and a resistor core connected to the heat dissipation plates. The two heat dissipation plates are oppositely arranged, the resistor core is clamped and connected between the two heat dissipation plates, the surfaces of the sides, deviating from each other, of the two heat dissipation plates and the inner wall of the cooling shell form a water cooling cavity, the water inlet and outlet manifold is communicated with the water cooling cavity, the resistor core is provided with two pins and two branch resistor cores, the two ends of each branch resistor core are connected to the two pins respectively, and the two branch resistor cores are connected to the two pins respectively. The pins and the sub-resistor cores are communicated in series and integrally formed, the sub-resistor cores are folded to be arranged in a long snake manner, and the folding parts of the two sub-resistor cores are opposite to each other, so that the two sub-resistor cores are arranged in parallel. The method has the advantages that the inductance value of the water-cooling resistor is reduced, and the new energy automobile battery can be detected.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of battery detection equipment, in particular to a new energy battery detection water-cooled resistor. BACKGROUND

[0002] The new energy automobile refers to an automobile adopting unconventional vehicle fuel as a power source (or using conventional vehicle fuel, adopting a new vehicle power device), and combining advanced technologies of vehicle power control and driving to form an automobile with advanced technical principles and new technologies and structures. The new energy automobile includes a pure electric automobile and a range-extender electric automobile.

[0003] The development of the new energy automobile cannot be separated from the research and development of the battery. In the battery performance detection, a water-cooled resistor is needed. The water-cooled resistor generally comprises a shell, a water-cooled channel and a resistor core. The resistor core generates heat during the detection process, and water flow needs to be introduced into the water-cooled channel to cool the resistor core, so as to achieve the detection purpose.

[0004] The inductance of the water-cooled resistor is extremely high during the battery detection of the new energy automobile. The resistor core in the traditional water-cooled resistor adopts a long snake type winding mode, and the inductance is extremely high, which cannot meet the requirements of detecting the new energy automobile battery. SUMMARY

[0005] In order to reduce the inductance of the water-cooled resistor and detect the new energy automobile battery, the application provides a new energy battery detection water-cooled resistor.

[0006] The application provides a new energy battery detection water-cooled resistor, which adopts the following technical scheme:

[0007] The new energy battery detection water-cooled resistor comprises a shell, a cooling shell arranged in the shell, an inlet and outlet water manifold communicated with the cooling shell, a heat dissipation plate fixedly connected with the cooling shell and a resistor core connected with the heat dissipation plate. The number of the heat dissipation plates is two, the two heat dissipation plates are arranged opposite to each other, the resistor core is arranged between the two heat dissipation plates, the side surfaces of the two heat dissipation plates opposite to each other and the inner wall of the cooling shell form a water-cooled cavity, the inlet and outlet water manifold is communicated with the water-cooled cavity, the resistor core is provided with two pins and two sub-resistor cores, the two ends of the two sub-resistor cores are connected with the two pins respectively, the pins and the sub-resistor cores are in series communication and are integrally formed, the sub-resistor cores are folded in a long snake type arrangement, the folding positions of the two sub-resistor cores are opposite to each other, and the two sub-resistor cores are arranged in parallel.

[0008] By adopting the technical scheme, the water cooling cavity between the heat dissipation plate and the water cooling shell provides a flowing position for the cooling water flow, and the cooling of the resistance core is realized. After the resistance core is divided into two parts, the length of the single divided resistance core is reduced due to the parallel mutual facing, so that the inductance is significantly reduced. Meanwhile, the two divided resistance cores are in parallel with each other, and the facing area and volume are also small, so that the inductance of the overall water cooled resistance is reduced, and the purpose of battery detection of the new energy automobile is realized.

[0009] Optionally, the shell is provided with mounting ears.

[0010] By adopting the technical scheme, the user can easily install the application.

[0011] Optionally, the surface of the resistance core is attached to the surface of the heat dissipation plate.

[0012] By adopting the technical scheme, the cooling effect of the resistance core is improved.

[0013] Optionally, the number of the water inlet and outlet manifolds is two, and the two water inlet and outlet manifolds are respectively connected to the two ends of the cooling shell. The water inlet and outlet manifold comprises a mounting member, a main water pipe connected to the mounting member, and two connecting pipes communicated with the main water pipe. The mounting member is fixedly connected to the shell, the axis direction of the main water pipe is perpendicular to the axis direction of the connecting pipe, and the two connecting pipes are respectively communicated with the two water cooling cavities.

[0014] By adopting the technical scheme, the mounting member provides a mounting position for the main water pipe and the connecting pipe, and the main water pipe and the connecting pipe provide a channel for the water flow. Meanwhile, the connecting pipe connects the two water cooling cavities into one, forms a circulation, and realizes the cooling of the resistance core.

[0015] Optionally, the surfaces of the two heat dissipation plates facing away from each other are provided with a plurality of grid bars, and the side surface of the cooling shell facing the heat dissipation plate is provided with three partition plates. The three partition plates are arranged in parallel, the length direction of the grid bars is parallel to the length direction of the partition plates, the length direction of the three partition plates is parallel to the axis direction of the connecting pipe, and the three partition plates uniformly divide the water cooling cavity into four parts. The plurality of grid bars are divided into four grid bar groups, and there is one grid bar group between the adjacent two partition plates.

[0016] By adopting the technical scheme, the flowing path of the water flow in the water cooling cavity can be increased, so that the water cooling effect is more thorough. Meanwhile, the grid bars also increase the volume of the heat dissipation plate, and provide better cooling effect.

[0017] Optionally, each of the grid bar groups is composed of five grid bars.

[0018] By adopting the technical scheme, the grid bars increase the volume of the heat dissipation plate, and provide better cooling effect.

[0019] Optionally, the ends of the two partition plates are connected to the same side of the cooling shell, the end of the other partition plate is connected to the other side of the cooling shell, a long-snake-shaped flow path is formed for the water flow, and the two water inlet and outlet manifolds are connected to the same side of the cooling shell and connected to the two ends of the water flow path respectively.

[0020] By adopting the above technical scheme, the partition plate limits the flow path of the water flow, increases the length of the flow path of the water flow, and improves the cooling effect.

[0021] Optionally, the circumferential side wall of the heat dissipation plate and the inner wall of the cooling shell are fixedly connected by friction stir welding.

[0022] By adopting the above technical scheme, the possibility of water leakage is reduced. At present, the connection between the cooling shell and the heat dissipation plate in the prior art is usually connected and isolated by using a sealing ring. During use, both temperature and service life can weaken the sealing effect of the sealing ring. At the same time, there is a risk of pressure deviation during installation of the sealing ring, and the possibility of water leakage is large. The friction stir welding method can improve the connection precision and strength of the heat dissipation plate and the cooling shell, and reduce the possibility of water leakage.

[0023] In summary, the present application has at least one of the following beneficial technical effects:

[0024] 1. By dividing the resistance core into two parts, the length of the individual resistance core is reduced due to the parallel arrangement, which significantly reduces the inductance. At the same time, the two resistance cores are connected in parallel, and the facing area and volume are also small, which reduces the inductance of the overall water-cooled resistance, and achieves the purpose of battery detection for new energy vehicles.

[0025] 2. The friction stir welding method can improve the connection precision and strength of the heat dissipation plate and the cooling shell, and reduce the possibility of water leakage. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structural schematic diagram of a new energy battery detection water-cooled resistance.

[0027] Figure 2 is a sectional view of a new energy battery detection water-cooled resistance.

[0028] Figure 3 is a structural schematic diagram of the connection relationship between the cooling shell and the water inlet and outlet manifold.

[0029] Figure 4 is a structural schematic diagram of the cooling shell.

[0030] Figure 5is a structural diagram of the heat dissipation plate.

[0031] Figure 6 is a structural diagram of the resistance core.

[0032] Explanation of reference numerals: 1, housing; 11, mounting lug; 2, cooling shell; 21, partition plate; 3, water inlet and outlet manifold; 31, mounting piece; 32, main water pipe; 33, connecting pipe; 4, heat dissipation plate; 41, grid; 5, resistance core; 51, pin; 52, sub-resistance core; 6, water-cooled cavity. DETAILED DESCRIPTION

[0033] The following will be described in detail below with reference to the accompanying drawings. Figures 1-6 The present application is further described in detail.

[0034] The present application discloses a new energy battery detection water-cooled resistance. Referring to Figure 1 -2, a new energy battery detection water-cooled resistance includes a housing 1, a cooling shell 2 arranged inside the housing 1, a water inlet and outlet manifold 3 connected to the cooling shell 2, a heat dissipation plate 4 fixedly connected to the cooling shell 2, and a resistance core 5 connected to the heat dissipation plate 4. The housing 1 is provided with mounting lugs 11, which facilitate user installation of the present application, combined Figure 3 and Figure 4 The number of heat dissipation plates 4 is two, and the two heat dissipation plates 4 are arranged opposite to each other. The circumferential side wall of the heat dissipation plate 4 and the inner wall of the cooling shell 2 are fixedly connected by friction stir welding. The connection precision and strength of the heat dissipation plate 4 and the cooling shell 2 can be improved by the friction stir welding method, and the possibility of water leakage is reduced.

[0035] Referring to Figure 2 and Figure 5 The surfaces of the two heat dissipation plates 4 facing away from each other are provided with a plurality of grids 41. The side surface of the cooling shell 2 facing the heat dissipation plate 4 is provided with three partition plates 21. The three partition plates 21 are arranged in parallel. The length direction of the grid 41 is parallel to the length direction of the partition plate 21. The length direction of the three partition plates 21 is parallel to the axis direction of the connecting pipe 33. The three partition plates 21 evenly divide the water-cooled cavity 6 into four parts. The plurality of grids 41 are divided into four grid groups. Each grid group is composed of five grids. There is one grid group between the adjacent two partition plates 21. The flow path of the water flow in the water-cooled cavity 6 can be increased, and the water cooling effect is more complete. At the same time, the grids 41 also increase the volume of the heat dissipation plate 4, providing better cooling effect.

[0036] Referring to Figures 2-5 The end portions of the two partition plates 21 are connected to the same side of the cooling shell 2. The end portion of the other partition plate 21 is connected to the other side of the cooling shell 2, forming a long snake-shaped flow path for the water flow. The two water inlet and outlet manifolds 3 are connected to the same side of the cooling shell 2, and the water inlet and outlet manifolds 3 are respectively connected to the two ends of the water flow flow path.

[0037] The partition plate 21 limits the flow path of the water flow, increases the length of the flow path of the water flow, and improves the cooling effect.

[0038] Referring to Figure 2 The resistance core 5 is clamped and connected between the two heat dissipation plates 4, and the surface of the resistance core 5 is attached to the surface of the heat dissipation plate 4, thereby improving the cooling effect of the resistance core 5.

[0039] Referring to Figure 2 and Figure 3 The two heat dissipation plates 4 form a water cooling cavity 6 with the inner wall of the cooling shell 2 on the side surface away from each other, and the inlet and outlet water manifold 3 is connected to the water cooling cavity 6. The water cooling cavity 6 between the heat dissipation plate 4 and the water cooling shell provides a flow position for the cooling water flow, thereby achieving the cooling of the resistance core 5.

[0040] Referring to Figure 6 The resistance core 5 is provided with two pins 51 and two resistance core 52, the two ends of the two resistance core 52 are connected to the two pins 51, the pin 51 and the resistance core 52 are connected in series and integrally formed, the resistance core 52 is folded in a long snake type arrangement, and the two resistance core 52 are opposite to each other at the folding position, so that the two resistance core 52 are arranged in parallel.

[0041] After the resistance core 5 is divided into two parts, the length of the single resistance core 52 between the two resistance core 52 is reduced due to the parallel connection, so that the inductance is significantly reduced. At the same time, the two resistance core 52 are connected in parallel, and the opposite area and volume are also small, so that the inductance of the overall water-cooled resistor is reduced, thereby achieving the purpose of detecting the battery of the new energy automobile.

[0042] Referring to Figure 2 and Figure 3 The number of inlet and outlet water manifolds 3 is two, and the two inlet and outlet water manifolds 3 are connected to the two ends of the cooling shell 2. The inlet and outlet water manifold 3 includes a mounting piece 31, a main water pipe 32 connected to the mounting piece 31, and two connecting pipes 33 connected to the main water pipe 32. The mounting piece 31 is fixedly connected to the shell 1, the axis direction of the main water pipe 32 is perpendicular to the axis direction of the connecting pipe 33, and the two connecting pipes 33 are connected to the two water cooling cavities 6.

[0043] The mounting piece 31 provides mounting positions for the main water pipe 32 and the connecting pipe 33, and the main water pipe 32 and the connecting pipe 33 provide channels for the water flow. At the same time, the connecting pipe 33 connects the two water cooling cavities 6 into one, forms a circulation, and achieves the cooling of the resistance core 5.

[0044] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application. Therefore, any equivalent changes made on the basis of the structure, shape, principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A new energy battery detects water cooling resistance, it is characterized in that: The application relates to a water-cooled radiator, which comprises an outer shell (1), a cooling shell (2) arranged in the outer shell (1), water inlet and outlet manifolds (3) communicated with the cooling shell (2), heat dissipation plates (4) fixedly connected with the cooling shell (2), and resistance cores (5) connected with the heat dissipation plates (4), wherein the number of the heat dissipation plates (4) is two, the two heat dissipation plates (4) are arranged opposite to each other, the resistance cores (5) are arranged between the two heat dissipation plates (4), the side surfaces of the two heat dissipation plates (4) away from each other and the inner wall of the cooling shell (2) form water-cooled cavities (6), the water inlet and outlet manifolds (3) are communicated with the water-cooled cavities (6), the resistance cores (5) are provided with two pins (51) and two sub-resistance cores (52), the two ends of the two sub-resistance cores (52) are connected with the two pins (51) respectively, the pins (51) and the sub-resistance cores (52) are communicated in series and integrally formed, the sub-resistance cores (52) are arranged in a long snake type in a folded mode, the folding positions of the two sub-resistance cores (52) are opposite to each other, and the two sub-resistance cores (52) are arranged in a parallel type.

2. The water-cooled resistance for detecting new energy batteries according to claim 1, characterized in that: The outer shell (1) is provided with mounting ears (11).

3. The water-cooled resistance for detecting new energy batteries according to claim 1, characterized in that: The surface of the resistance core (5) is attached to the surface of the heat dissipation plate (4).

4. The water-cooled resistance for detecting new energy batteries according to claim 1, characterized in that: The number of the water inlet and outlet manifolds (3) is two, the two water inlet and outlet manifolds (3) are connected with the two ends of the cooling shell (2) respectively, the water inlet and outlet manifold (3) comprises a mounting piece (31), a main water pipe (32) connected with the mounting piece (31), and two connecting pipes (33) communicated with the main water pipe (32), the mounting piece (31) is fixedly connected with the outer shell (1), the axis direction of the main water pipe (32) is perpendicular to the axis direction of the connecting pipe (33), and the two connecting pipes (33) are communicated with the two water-cooled cavities (6) respectively.

5. The water-cooled resistance for detecting new energy batteries according to claim 4, characterized in that: The surfaces of the two heat dissipation plates (4) away from each other are provided with a plurality of grid bars (41), and the side surface of the cooling shell (2) facing the heat dissipation plate (4) is provided with three partition plates (2), the three partition plates (2) are arranged in parallel, the length direction of the grid bar (41) is parallel to the length direction of the partition plate (2), the length direction of the three partition plates (2) is parallel to the axis direction of the connecting pipe, the three partition plates (2) uniformly divide the water-cooled cavity (6) into four parts, and the plurality of grid bars (41) are divided into four grid bar groups, and there is one grid bar group between every two adjacent partition plates (2).

6. The water-cooled resistance for detecting new energy batteries according to claim 5, characterized in that: Each grid bar group is composed of five grid bars (41).

7. The water-cooled resistance for detecting new energy batteries according to claim 5, characterized in that: The end portions of two partition plates (2) are connected with the same side of the cooling shell (2), the end portion of the other partition plate (2) is connected with the other side of the cooling shell (2), a long snake type flow path is formed for water flow, the two water inlet and outlet manifolds (3) are connected with the same side of the cooling shell (2), and the water inlet and outlet manifolds (3) are connected with the two ends of the water flow flow path respectively.

8. The water-cooled resistance for detecting new energy batteries according to claim 5, characterized in that: The circumferential side wall of the heat dissipation plate (4) and the inner wall of the cooling shell (2) are fixedly connected through friction stir welding.

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